// /** অনুবাদ কৃতজ্ঞতা- * আফতাবুজ্জামান * MdsShakil * ZI Jony * Nafiul adeeb * Sojol Rana * Aishik Rehman   * A library full of lots of goodness for user scripts on MediaWiki wikis, including Wikipedia.  *  * The highlights include:  * - {@link Morebits.wiki.api} - make calls to the MediaWiki API  * - {@link Morebits.wiki.page} - modify pages on the wiki (edit, revert, delete, etc.)  * - {@link Morebits.date} - enhanced date object processing, sort of a light moment.js  * - {@link Morebits.quickForm} - generate quick HTML forms on the fly  * - {@link Morebits.simpleWindow} - a wrapper for jQuery UI Dialog with a custom look and extra features  * - {@link Morebits.status} - a rough-and-ready status message displayer, used by the Morebits.wiki classes  * - {@link Morebits.wikitext} - utilities for dealing with wikitext  * - {@link Morebits.string} - utilities for manipulating strings  * - {@link Morebits.array} - utilities for manipulating arrays  * - {@link Morebits.ip} - utilities to help process IP addresses  *  * Dependencies:  * - The whole thing relies on jQuery.  But most wikis should provide this by default.  * - {@link Morebits.quickForm}, {@link Morebits.simpleWindow}, and {@link Morebits.status} rely on the "morebits.css" file for their styling.  * - {@link Morebits.simpleWindow} and {@link Morebits.quickForm} tooltips rely on jQuery UI Dialog (from ResourceLoader module name 'jquery.ui').  * - To create a gadget based on morebits.js, use this syntax in MediaWiki:Gadgets-definition:  *     - `*GadgetName[ResourceLoader|dependencies=mediawiki.user,mediawiki.util,mediawiki.Title,jquery.ui]|morebits.js|morebits.css|GadgetName.js`  * - Alternatively, you can configure morebits.js as a hidden gadget in MediaWiki:Gadgets-definition:  *     - `*morebits[ResourceLoader|dependencies=mediawiki.user,mediawiki.util,mediawiki.Title,jquery.ui|hidden]|morebits.js|morebits.css`  *     and then load ext.gadget.morebits as one of the dependencies for the new gadget.  *  * All the stuff here works on all browsers for which MediaWiki provides JavaScript support.  *  * This library is maintained by the maintainers of Twinkle.  * For queries, suggestions, help, etc., head to [Wikipedia talk:Twinkle on English Wikipedia](http://en.wikipedia.org/wiki/WT:TW).  * The latest development source is available at {@link https://github.com/wikimedia-gadgets/twinkle/blob/master/morebits.js|GitHub}.  *  * @namespace Morebits  */  (function (window, document, $) { // Wrap entire file with anonymous function  /** @lends Morebits */ var Morebits = {}; window.Morebits = Morebits;  // allow global access  /**  * i18n support for strings in Morebits  */ Morebits.i18n = { 	parser: null, 	/** 	 * Set an i18n library to use with Morebits. 	 * Examples: 	 * Use jquery-i18n: 	 *     Morebits.i18n.setParser({ get: $.i18n }); 	 * Use banana-i18n or orange-i18n: 	 *     var banana = new Banana('en'); 	 *     Morebits.i18n.setParser({ get: banana.i18n }); 	 * @param {Object} parser 	 */ 	setParser: function(parser) { 		if (!parser || typeof parser.get !== 'function') { 			throw new Error('Morebits.i18n: parser must implement get()'); 		} 		Morebits.i18n.parser = parser; 	}, 	/** 	 * @private 	 * @returns {string} 	 */ 	getMessage: function () { 		var args = Array.prototype.slice.call(arguments); // array of size `n` 		// 1st arg: message name 		// 2nd to (n-1)th arg: message parameters 		// nth arg: legacy English fallback 		var msgName = args[0]; 		var fallback = args[args.length - 1]; 		if (!Morebits.i18n.parser) { 			return fallback; 		} 		// i18n libraries are generally invoked with variable number of arguments 		// as msg(msgName, ...parameters) 		var i18nMessage = Morebits.i18n.parser.get.apply(null, args.slice(0, -1)); 		// if no i18n message exists, i18n libraries generally give back the message name 		if (i18nMessage === msgName) { 			return fallback; 		} 		return i18nMessage; 	} };  // shortcut var msg = Morebits.i18n.getMessage;  /**  * Wiki-specific configurations for Morebits  */ Morebits.l10n = { 	/** 	 * Local aliases for "redirect" magic word. 	 * Check using api.php?action=query&format=json&meta=siteinfo&formatversion=2&siprop=magicwords 	 */ 	redirectTagAliases: ['#REDIRECT'],  	/** 	 * Takes a string as argument and checks if it is a timestamp or not 	 * If not, it returns null. If yes, it returns an array of integers 	 * in the format [year, month, date, hour, minute, second] 	 * which can be passed to Date.UTC() 	 * @param {string} str 	 * @returns {number[] | null} 	 */ 	signatureTimestampFormat: function (str) { 		// HH:mm, DD Month YYYY (UTC) 		var rgx = /(\d{2}):(\d{2}), (\d{1,2}) (\w+) (\d{4}) \(UTC\)/; 		var match = rgx.exec(str); 		if (!match) { 			return null; 		} 		var month = Morebits.date.localeData.months.indexOf(match[4]); 		if (month === -1) { 			return null; 		} 		// ..... year ... month .. date ... hour .... minute 		return [match[5], month, match[3], match[1], match[2]]; 	} };  /**  * Simple helper function to see what groups a user might belong.  *  * @param {string} group - e.g. `sysop`, `extendedconfirmed`, etc.  * @returns {boolean}  */ Morebits.userIsInGroup = function (group) { 	return mw.config.get('wgUserGroups').indexOf(group) !== -1; }; /** Hardcodes whether the user is a sysop, used a lot.  *  * @type {boolean}  */ Morebits.userIsSysop = Morebits.userIsInGroup('sysop');  /**  * Deprecated as of February 2021, use {@link Morebits.ip.sanitizeIPv6}.  *  * @deprecated Use {@link Morebits.ip.sanitizeIPv6}.  * Converts an IPv6 address to the canonical form stored and used by MediaWiki.  * JavaScript translation of the {@link https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/8eb6ac3e84ea3312d391ca96c12c49e3ad0753bb/includes/utils/IP.php#131|`IP::sanitizeIP()`}  * function from the IPUtils library.  Addresses are verbose, uppercase,  * normalized, and expanded to 8 words.  *  * @param {string} address - The IPv6 address, with or without CIDR.  * @returns {string}  */ Morebits.sanitizeIPv6 = function (address) { 	console.warn('NOTE: Morebits.sanitizeIPv6 was renamed to Morebits.ip.sanitizeIPv6 in February 2021, please use that instead'); // eslint-disable-line no-console 	return Morebits.ip.sanitizeIPv6(address); };  /**  * Determines whether the current page is a redirect or soft redirect. Fails  * to detect soft redirects on edit, history, etc. pages.  Will attempt to  * detect Module:RfD, with the same failure points.  *  * @returns {boolean}  */ Morebits.isPageRedirect = function() { 	return !!(mw.config.get('wgIsRedirect') || document.getElementById('softredirect') || $('.box-RfD').length); };  /**  * Stores a normalized (underscores converted to spaces) version of the  * `wgPageName` variable.  *  * @type {string}  */ Morebits.pageNameNorm = mw.config.get('wgPageName').replace(/_/g, ' ');  /**  * Create a string for use in regex matching a page name.  Accounts for  * leading character's capitalization, underscores as spaces, and special  * characters being escaped.  See also {@link Morebits.namespaceRegex}.  *  * @param {string} pageName - Page name without namespace.  * @returns {string} - For a page name `Foo bar`, returns the string `[Ff]oo[_ ]bar`.  */ Morebits.pageNameRegex = function(pageName) { 	if (pageName === '') { 		return ''; 	} 	var firstChar = pageName[0], 		remainder = Morebits.string.escapeRegExp(pageName.slice(1)); 	if (mw.Title.phpCharToUpper(firstChar) !== firstChar.toLowerCase()) { 		return '[' + mw.Title.phpCharToUpper(firstChar) + firstChar.toLowerCase() + ']' + remainder; 	} 	return Morebits.string.escapeRegExp(firstChar) + remainder; };  /**  * Converts string or array of DOM nodes into an HTML fragment.  * Wikilink syntax (`[[...]]`) is transformed into HTML anchor.  * Used in Morebits.quickForm and Morebits.status  * @internal  * @param {string|Node|(string|Node)[]} input  * @returns {DocumentFragment}  */ Morebits.createHtml = function(input) { 	var fragment = document.createDocumentFragment(); 	if (!input) { 		return fragment; 	} 	if (!Array.isArray(input)) { 		input = [ input ]; 	} 	for (var i = 0; i < input.length; ++i) { 		if (input[i] instanceof Node) { 			fragment.appendChild(input[i]); 		} else { 			$.parseHTML(Morebits.createHtml.renderWikilinks(input[i])).forEach(function(node) { 				fragment.appendChild(node); 			}); 		} 	} 	return fragment; };  /**  * Converts wikilinks to HTML anchor tags.  * @param text  * @returns {*}  */ Morebits.createHtml.renderWikilinks = function (text) { 	var ub = new Morebits.unbinder(text); 	// Don't convert wikilinks within code tags as they're used for displaying wiki-code 	ub.unbind('<code>', '</code>'); 	ub.content = ub.content.replace( 		/\[\[:?(?:([^|\]]+?)\|)?([^\]|]+?)\]\]/g, 		function(_, target, text) { 			if (!target) { 				target = text; 			} 			return '<a target="_blank" href="' + mw.util.getUrl(target) + 				'" title="' + target.replace(/"/g, '"') + '">' + text + '</a>'; 		}); 	return ub.rebind(); };  /**  * Create a string for use in regex matching all namespace aliases, regardless  * of the capitalization and underscores/spaces.  Doesn't include the optional  * leading `:`, but if there's more than one item, wraps the list in a  * non-capturing group.  This means you can do `Morebits.namespaceRegex([4]) +  * ':' + Morebits.pageNameRegex('Twinkle')` to match a full page.  Uses  * {@link Morebits.pageNameRegex}.  *  * @param {number[]} namespaces - Array of namespace numbers.  Unused/invalid  * namespace numbers are silently discarded.  * @example  * // returns '(?:[Ff][Ii][Ll][Ee]|[Ii][Mm][Aa][Gg][Ee])'  * Morebits.namespaceRegex([6])  * @returns {string} - Regex-suitable string of all namespace aliases.  */ Morebits.namespaceRegex = function(namespaces) { 	if (!Array.isArray(namespaces)) { 		namespaces = [namespaces]; 	} 	var aliases = [], regex; 	$.each(mw.config.get('wgNamespaceIds'), function(name, number) { 		if (namespaces.indexOf(number) !== -1) { 			// Namespaces are completely agnostic as to case, 			// and a regex string is more useful/compatible than a RegExp object, 			// so we accept any casing for any letter. 			aliases.push(name.split('').map(function(char) { 				return Morebits.pageNameRegex(char); 			}).join('')); 		} 	}); 	switch (aliases.length) { 		case 0: 			regex = ''; 			break; 		case 1: 			regex = aliases[0]; 			break; 		default: 			regex = '(?:' + aliases.join('|') + ')'; 			break; 	} 	return regex; };  /* **************** Morebits.quickForm **************** */ /**  * Creation of simple and standard forms without much specific coding.  *  * @namespace Morebits.quickForm  * @memberof Morebits  * @class  * @param {event} event - Function to execute when form is submitted.  * @param {string} [eventType=submit] - Type of the event.  */ Morebits.quickForm = function QuickForm(event, eventType) { 	this.root = new Morebits.quickForm.element({ type: 'form', event: event, eventType: eventType }); };  /**  * Renders the HTML output of the quickForm.  *  * @memberof Morebits.quickForm  * @returns {HTMLElement}  */ Morebits.quickForm.prototype.render = function QuickFormRender() { 	var ret = this.root.render(); 	ret.names = {}; 	return ret; };  /**  * Append element to the form.  *  * @memberof Morebits.quickForm  * @param {(object|Morebits.quickForm.element)} data - A quickform element, or the object with which  * a quickform element is constructed.  * @returns {Morebits.quickForm.element} - Same as what is passed to the function.  */ Morebits.quickForm.prototype.append = function QuickFormAppend(data) { 	return this.root.append(data); };  /**  * Create a new element for the the form.  *  * Index to Morebits.quickForm.element types:  * - Global attributes: id, className, style, tooltip, extra, $data, adminonly  * - `select`: A combo box (aka drop-down).  *     - Attributes: name, label, multiple, size, list, event, disabled  *  - `option`: An element for a combo box.  *      - Attributes: value, label, selected, disabled  *  - `optgroup`: A group of "option"s.  *      - Attributes: label, list  *  - `field`: A fieldset (aka group box).  *      - Attributes: name, label, disabled  *  - `checkbox`: A checkbox. Must use "list" parameter.  *      - Attributes: name, list, event  *      - Attributes (within list): name, label, value, checked, disabled, event, subgroup  *  - `radio`: A radio button. Must use "list" parameter.  *      - Attributes: name, list, event  *      - Attributes (within list): name, label, value, checked, disabled, event, subgroup  *  - `input`: A text input box.  *      - Attributes: name, label, value, size, placeholder, maxlength, disabled, required, readonly, event  *  - `number`: A number input box.  *      - Attributes: Everything the text `input` has, as well as: min, max, step, list  *  - `dyninput`: A set of text boxes with "Remove" buttons and an "Add" button.  *      - Attributes: name, label, min, max, sublabel, value, size, maxlength, event  *  - `hidden`: An invisible form field.  *      - Attributes: name, value  *  - `header`: A level 5 header.  *      - Attributes: label  *  - `div`: A generic placeholder element or label.  *      - Attributes: name, label  *  - `submit`: A submit button. Morebits.simpleWindow moves these to the footer of the dialog.  *      - Attributes: name, label, disabled  *  - `button`: A generic button.  *      - Attributes: name, label, disabled, event  *  - `textarea`: A big, multi-line text box.  *      - Attributes: name, label, value, cols, rows, disabled, required, readonly  *  - `fragment`: A DocumentFragment object.  *      - No attributes, and no global attributes except adminonly.  * There is some difference on how types handle the `label` attribute:  * - `div`, `select`, `field`, `checkbox`/`radio`, `input`, `textarea`, `header`, and `dyninput` can accept an array of items,  * and the label item(s) can be `Element`s.  * - `option`, `optgroup`, `_dyninput_element`, `submit`, and `button` accept only a single string.  *  * @memberof Morebits.quickForm  * @class  * @param {object} data - Object representing the quickform element. Should  * specify one of the available types from the index above, as well as any  * relevant and available attributes.  * @example new Morebits.quickForm.element({  *     name: 'target',  *     type: 'input',  *     label: 'Your target:',  *     tooltip: 'Enter your target. Required.',  *     required: true  * });  */ Morebits.quickForm.element = function QuickFormElement(data) { 	this.data = data; 	this.childs = []; };  /**  * @memberof Morebits.quickForm.element  * @type {number}  */ Morebits.quickForm.element.id = 0;  /**  * Appends an element to current element.  *  * @memberof Morebits.quickForm.element  * @param {Morebits.quickForm.element} data - A quickForm element or the object required to  * create the quickForm element.  * @returns {Morebits.quickForm.element} The same element passed in.  */ Morebits.quickForm.element.prototype.append = function QuickFormElementAppend(data) { 	var child; 	if (data instanceof Morebits.quickForm.element) { 		child = data; 	} else { 		child = new Morebits.quickForm.element(data); 	} 	this.childs.push(child); 	return child; };  /**  * Renders the HTML output for the quickForm element.  This should be called  * without parameters: `form.render()`.  *  * @memberof Morebits.quickForm.element  * @returns {HTMLElement}  */ Morebits.quickForm.element.prototype.render = function QuickFormElementRender(internal_subgroup_id) { 	var currentNode = this.compute(this.data, internal_subgroup_id);  	for (var i = 0; i < this.childs.length; ++i) { 		// do not pass internal_subgroup_id to recursive calls 		currentNode[1].appendChild(this.childs[i].render()); 	} 	return currentNode[0]; };  /** @memberof Morebits.quickForm.element */ Morebits.quickForm.element.prototype.compute = function QuickFormElementCompute(data, in_id) { 	var node; 	var childContainer = null; 	var label; 	var id = (in_id ? in_id + '_' : '') + 'node_' + Morebits.quickForm.element.id++; 	if (data.adminonly && !Morebits.userIsSysop) { 		// hell hack alpha 		data.type = 'hidden'; 	}  	var i, current, subnode; 	switch (data.type) { 		case 'form': 			node = document.createElement('form'); 			node.className = 'quickform'; 			node.setAttribute('action', 'javascript:void(0);'); 			if (data.event) { 				node.addEventListener(data.eventType || 'submit', data.event, false); 			} 			break; 		case 'fragment': 			node = document.createDocumentFragment(); 			// fragments can't have any attributes, so just return it straight away 			return [ node, node ]; 		case 'select': 			node = document.createElement('div');  			node.setAttribute('id', 'div_' + id); 			if (data.label) { 				label = node.appendChild(document.createElement('label')); 				label.setAttribute('for', id); 				label.appendChild(Morebits.createHtml(data.label)); 				label.style.marginRight = '3px'; 			} 			var select = node.appendChild(document.createElement('select')); 			if (data.event) { 				select.addEventListener('change', data.event, false); 			} 			if (data.multiple) { 				select.setAttribute('multiple', 'multiple'); 			} 			if (data.size) { 				select.setAttribute('size', data.size); 			} 			if (data.disabled) { 				select.setAttribute('disabled', 'disabled'); 			} 			select.setAttribute('name', data.name);  			if (data.list) { 				for (i = 0; i < data.list.length; ++i) {  					current = data.list[i];  					if (current.list) { 						current.type = 'optgroup'; 					} else { 						current.type = 'option'; 					}  					subnode = this.compute(current); 					select.appendChild(subnode[0]); 				} 			} 			childContainer = select; 			break; 		case 'option': 			node = document.createElement('option'); 			node.values = data.value; 			node.setAttribute('value', data.value); 			if (data.selected) { 				node.setAttribute('selected', 'selected'); 			} 			if (data.disabled) { 				node.setAttribute('disabled', 'disabled'); 			} 			node.setAttribute('label', data.label); 			node.appendChild(document.createTextNode(data.label)); 			break; 		case 'optgroup': 			node = document.createElement('optgroup'); 			node.setAttribute('label', data.label);  			if (data.list) { 				for (i = 0; i < data.list.length; ++i) {  					current = data.list[i]; 					current.type = 'option'; // must be options here  					subnode = this.compute(current); 					node.appendChild(subnode[0]); 				} 			} 			break; 		case 'field': 			node = document.createElement('fieldset'); 			label = node.appendChild(document.createElement('legend')); 			label.appendChild(Morebits.createHtml(data.label)); 			if (data.name) { 				node.setAttribute('name', data.name); 			} 			if (data.disabled) { 				node.setAttribute('disabled', 'disabled'); 			} 			break; 		case 'checkbox': 		case 'radio': 			node = document.createElement('div'); 			if (data.list) { 				for (i = 0; i < data.list.length; ++i) { 					var cur_id = id + '_' + i; 					current = data.list[i]; 					var cur_div; 					if (current.type === 'header') { 					// inline hack 						cur_div = node.appendChild(document.createElement('h6')); 						cur_div.appendChild(document.createTextNode(current.label)); 						if (current.tooltip) { 							Morebits.quickForm.element.generateTooltip(cur_div, current); 						} 						continue; 					} 					cur_div = node.appendChild(document.createElement('div')); 					subnode = cur_div.appendChild(document.createElement('input')); 					subnode.values = current.value; 					subnode.setAttribute('value', current.value); 					subnode.setAttribute('type', data.type); 					subnode.setAttribute('id', cur_id); 					subnode.setAttribute('name', current.name || data.name);  					// If name is provided on the individual checkbox, add a data-single 					// attribute which indicates it isn't part of a list of checkboxes with 					// same name. Used in getInputData() 					if (current.name) { 						subnode.setAttribute('data-single', 'data-single'); 					}  					if (current.checked) { 						subnode.setAttribute('checked', 'checked'); 					} 					if (current.disabled) { 						subnode.setAttribute('disabled', 'disabled'); 					} 					label = cur_div.appendChild(document.createElement('label'));  					label.appendChild(Morebits.createHtml(current.label)); 					label.setAttribute('for', cur_id); 					if (current.tooltip) { 						Morebits.quickForm.element.generateTooltip(label, current); 					} 					// styles go on the label, doesn't make sense to style a checkbox/radio 					if (current.style) { 						label.setAttribute('style', current.style); 					}  					var event; 					if (current.subgroup) { 						var tmpgroup = current.subgroup;  						if (!Array.isArray(tmpgroup)) { 							tmpgroup = [ tmpgroup ]; 						}  						var subgroupRaw = new Morebits.quickForm.element({ 							type: 'div', 							id: id + '_' + i + '_subgroup' 						}); 						$.each(tmpgroup, function(idx, el) { 							var newEl = $.extend({}, el); 							if (!newEl.type) { 								newEl.type = data.type; 							} 							newEl.name = (current.name || data.name) + '.' + newEl.name; 							subgroupRaw.append(newEl); 						});  						var subgroup = subgroupRaw.render(cur_id); 						subgroup.className = 'quickformSubgroup'; 						subnode.subgroup = subgroup; 						subnode.shown = false;  						event = function(e) { 							if (e.target.checked) { 								e.target.parentNode.appendChild(e.target.subgroup); 								if (e.target.type === 'radio') { 									var name = e.target.name; 									if (e.target.form.names[name] !== undefined) { 										e.target.form.names[name].parentNode.removeChild(e.target.form.names[name].subgroup); 									} 									e.target.form.names[name] = e.target; 								} 							} else { 								e.target.parentNode.removeChild(e.target.subgroup); 							} 						}; 						subnode.addEventListener('change', event, true); 						if (current.checked) { 							subnode.parentNode.appendChild(subgroup); 						} 					} else if (data.type === 'radio') { 						event = function(e) { 							if (e.target.checked) { 								var name = e.target.name; 								if (e.target.form.names[name] !== undefined) { 									e.target.form.names[name].parentNode.removeChild(e.target.form.names[name].subgroup); 								} 								delete e.target.form.names[name]; 							} 						}; 						subnode.addEventListener('change', event, true); 					} 					// add users' event last, so it can interact with the subgroup 					if (data.event) { 						subnode.addEventListener('change', data.event, false); 					} else if (current.event) { 						subnode.addEventListener('change', current.event, true); 					} 				} 			} 			if (data.shiftClickSupport && data.type === 'checkbox') { 				Morebits.checkboxShiftClickSupport(Morebits.quickForm.getElements(node, data.name)); 			} 			break; 		// input is actually a text-type, so number here inherits the same stuff 		case 'number': 		case 'input': 			node = document.createElement('div'); 			node.setAttribute('id', 'div_' + id);  			if (data.label) { 				label = node.appendChild(document.createElement('label')); 				label.appendChild(Morebits.createHtml(data.label)); 				label.setAttribute('for', data.id || id); 				label.style.marginRight = '3px'; 			}  			subnode = node.appendChild(document.createElement('input')); 			subnode.setAttribute('name', data.name);  			if (data.type === 'input') { 				subnode.setAttribute('type', 'text'); 			} else { 				subnode.setAttribute('type', 'number'); 				['min', 'max', 'step', 'list'].forEach(function(att) { 					if (data[att]) { 						subnode.setAttribute(att, data[att]); 					} 				}); 			}  			['value', 'size', 'placeholder', 'maxlength'].forEach(function(att) { 				if (data[att]) { 					subnode.setAttribute(att, data[att]); 				} 			}); 			['disabled', 'required', 'readonly'].forEach(function(att) { 				if (data[att]) { 					subnode.setAttribute(att, att); 				} 			}); 			if (data.event) { 				subnode.addEventListener('keyup', data.event, false); 			}  			childContainer = subnode; 			break; 		case 'dyninput': 			var min = data.min || 1; 			var max = data.max || Infinity;  			node = document.createElement('div');  			label = node.appendChild(document.createElement('h5')); 			label.appendChild(Morebits.createHtml(data.label)); 			var listNode = node.appendChild(document.createElement('div'));  			var more = this.compute({ 				type: 'button', 				label: 'more', 				disabled: min >= max, 				event: function(e) { 					var new_node = new Morebits.quickForm.element(e.target.sublist); 					e.target.area.appendChild(new_node.render());  					if (++e.target.counter >= e.target.max) { 						e.target.setAttribute('disabled', 'disabled'); 					} 					e.stopPropagation(); 				} 			});  			node.appendChild(more[0]); 			var moreButton = more[1];  			var sublist = { 				type: '_dyninput_element', 				label: data.sublabel || data.label, 				name: data.name, 				value: data.value, 				size: data.size, 				remove: false, 				maxlength: data.maxlength, 				event: data.event 			};  			for (i = 0; i < min; ++i) { 				var elem = new Morebits.quickForm.element(sublist); 				listNode.appendChild(elem.render()); 			} 			sublist.remove = true; 			sublist.morebutton = moreButton; 			sublist.listnode = listNode;  			moreButton.sublist = sublist; 			moreButton.area = listNode; 			moreButton.max = max - min; 			moreButton.counter = 0; 			break; 		case '_dyninput_element': // Private, similar to normal input 			node = document.createElement('div');  			if (data.label) { 				label = node.appendChild(document.createElement('label')); 				label.appendChild(document.createTextNode(data.label)); 				label.setAttribute('for', id); 				label.style.marginRight = '3px'; 			}  			subnode = node.appendChild(document.createElement('input')); 			if (data.value) { 				subnode.setAttribute('value', data.value); 			} 			subnode.setAttribute('name', data.name); 			subnode.setAttribute('type', 'text'); 			if (data.size) { 				subnode.setAttribute('size', data.size); 			} 			if (data.maxlength) { 				subnode.setAttribute('maxlength', data.maxlength); 			} 			if (data.event) { 				subnode.addEventListener('keyup', data.event, false); 			} 			if (data.remove) { 				var remove = this.compute({ 					type: 'button', 					label: 'remove', 					event: function(e) { 						var list = e.target.listnode; 						var node = e.target.inputnode; 						var more = e.target.morebutton;  						list.removeChild(node); 						--more.counter; 						more.removeAttribute('disabled'); 						e.stopPropagation(); 					} 				}); 				node.appendChild(remove[0]); 				var removeButton = remove[1]; 				removeButton.inputnode = node; 				removeButton.listnode = data.listnode; 				removeButton.morebutton = data.morebutton; 			} 			break; 		case 'hidden': 			node = document.createElement('input'); 			node.setAttribute('type', 'hidden'); 			node.values = data.value; 			node.setAttribute('value', data.value); 			node.setAttribute('name', data.name); 			break; 		case 'header': 			node = document.createElement('h5'); 			node.appendChild(Morebits.createHtml(data.label)); 			break; 		case 'div': 			node = document.createElement('div'); 			if (data.name) { 				node.setAttribute('name', data.name); 			} 			if (data.label) { 				var result = document.createElement('span'); 				result.className = 'quickformDescription'; 				result.appendChild(Morebits.createHtml(data.label)); 				node.appendChild(result); 			} 			break; 		case 'submit': 			node = document.createElement('span'); 			childContainer = node.appendChild(document.createElement('input')); 			childContainer.setAttribute('type', 'submit'); 			if (data.label) { 				childContainer.setAttribute('value', data.label); 			} 			childContainer.setAttribute('name', data.name || 'submit'); 			if (data.disabled) { 				childContainer.setAttribute('disabled', 'disabled'); 			} 			break; 		case 'button': 			node = document.createElement('span'); 			childContainer = node.appendChild(document.createElement('input')); 			childContainer.setAttribute('type', 'button'); 			if (data.label) { 				childContainer.setAttribute('value', data.label); 			} 			childContainer.setAttribute('name', data.name); 			if (data.disabled) { 				childContainer.setAttribute('disabled', 'disabled'); 			} 			if (data.event) { 				childContainer.addEventListener('click', data.event, false); 			} 			break; 		case 'textarea': 			node = document.createElement('div'); 			node.setAttribute('id', 'div_' + id); 			if (data.label) { 				label = node.appendChild(document.createElement('h5')); 				var labelElement = document.createElement('label'); 				labelElement.appendChild(Morebits.createHtml(data.label)); 				labelElement.setAttribute('for', data.id || id); 				label.appendChild(labelElement); 			} 			subnode = node.appendChild(document.createElement('textarea')); 			subnode.setAttribute('name', data.name); 			if (data.cols) { 				subnode.setAttribute('cols', data.cols); 			} 			if (data.rows) { 				subnode.setAttribute('rows', data.rows); 			} 			if (data.disabled) { 				subnode.setAttribute('disabled', 'disabled'); 			} 			if (data.required) { 				subnode.setAttribute('required', 'required'); 			} 			if (data.readonly) { 				subnode.setAttribute('readonly', 'readonly'); 			} 			if (data.value) { 				subnode.value = data.value; 			} 			childContainer = subnode; 			break; 		default: 			throw new Error('Morebits.quickForm: unknown element type ' + data.type.toString()); 	}  	if (!childContainer) { 		childContainer = node; 	} 	if (data.tooltip) { 		Morebits.quickForm.element.generateTooltip(label || node, data); 	}  	if (data.extra) { 		childContainer.extra = data.extra; 	} 	if (data.$data) { 		$(childContainer).data(data.$data); 	} 	if (data.style) { 		childContainer.setAttribute('style', data.style); 	} 	if (data.className) { 		childContainer.className = childContainer.className ? 			childContainer.className + ' ' + data.className : 			data.className; 	} 	childContainer.setAttribute('id', data.id || id);  	return [ node, childContainer ]; };  /**  * Create a jQuery UI-based tooltip.  *  * @memberof Morebits.quickForm.element  * @requires jquery.ui  * @param {HTMLElement} node - The HTML element beside which a tooltip is to be generated.  * @param {object} data - Tooltip-related configuration data.  */ Morebits.quickForm.element.generateTooltip = function QuickFormElementGenerateTooltip(node, data) { 	var tooltipButton = node.appendChild(document.createElement('span')); 	tooltipButton.className = 'morebits-tooltipButton'; 	tooltipButton.title = data.tooltip; // Provides the content for jQuery UI 	tooltipButton.appendChild(document.createTextNode(msg('tooltip-mark', '?'))); 	$(tooltipButton).tooltip({ 		position: { my: 'left top', at: 'center bottom', collision: 'flipfit' }, 		// Deprecated in UI 1.12, but MW stuck on 1.9.2 indefinitely; see #398 and T71386 		tooltipClass: 'morebits-ui-tooltip' 	}); };  // Some utility methods for manipulating quickForms after their creation: // (None of these work for "dyninput" type fields at present)  /**  * Returns an object containing all filled form data entered by the user, with the object  * keys being the form element names. Disabled fields will be ignored, but not hidden fields.  *  * @memberof Morebits.quickForm  * @param {HTMLFormElement} form  * @returns {object} With field names as keys, input data as values.  */ Morebits.quickForm.getInputData = function(form) { 	var result = {};  	for (var i = 0; i < form.elements.length; i++) { 		var field = form.elements[i]; 		if (field.disabled || !field.name || !field.type || 			field.type === 'submit' || field.type === 'button') { 			continue; 		}  		// For elements in subgroups, quickform prepends element names with 		// name of the parent group followed by a period, get rid of that. 		var fieldNameNorm = field.name.slice(field.name.indexOf('.') + 1);  		switch (field.type) { 			case 'radio': 				if (field.checked) { 					result[fieldNameNorm] = field.value; 				} 				break; 			case 'checkbox': 				if (field.dataset.single) { 					result[fieldNameNorm] = field.checked; // boolean 				} else { 					result[fieldNameNorm] = result[fieldNameNorm] || []; 					if (field.checked) { 						result[fieldNameNorm].push(field.value); 					} 				} 				break; 			case 'select-multiple': 				result[fieldNameNorm] = $(field).val(); // field.value doesn't work 				break; 			case 'text': // falls through 			case 'textarea': 				result[fieldNameNorm] = field.value.trim(); 				break; 			default: // could be select-one, date, number, email, etc 				if (field.value) { 					result[fieldNameNorm] = field.value; 				} 				break; 		} 	} 	return result; };  /**  * Returns all form elements with a given field name or ID.  *  * @memberof Morebits.quickForm  * @param {HTMLFormElement} form  * @param {string} fieldName - The name or id of the fields.  * @returns {HTMLElement[]} - Array of matching form elements.  */ Morebits.quickForm.getElements = function QuickFormGetElements(form, fieldName) { 	var $form = $(form); 	fieldName = $.escapeSelector(fieldName); // sanitize input 	var $elements = $form.find('[name="' + fieldName + '"]'); 	if ($elements.length > 0) { 		return $elements.toArray(); 	} 	$elements = $form.find('#' + fieldName); 	return $elements.toArray(); };  /**  * Searches the array of elements for a checkbox or radio button with a certain  * `value` attribute, and returns the first such element. Returns null if not found.  *  * @memberof Morebits.quickForm  * @param {HTMLInputElement[]} elementArray - Array of checkbox or radio elements.  * @param {string} value - Value to search for.  * @returns {HTMLInputElement}  */ Morebits.quickForm.getCheckboxOrRadio = function QuickFormGetCheckboxOrRadio(elementArray, value) { 	var found = $.grep(elementArray, function(el) { 		return el.value === value; 	}); 	if (found.length > 0) { 		return found[0]; 	} 	return null; };  /**  * Returns the <div> containing the form element, or the form element itself  * May not work as expected on checkboxes or radios.  *  * @memberof Morebits.quickForm  * @param {HTMLElement} element  * @returns {HTMLElement}  */ Morebits.quickForm.getElementContainer = function QuickFormGetElementContainer(element) { 	// for divs, headings and fieldsets, the container is the element itself 	if (element instanceof HTMLFieldSetElement || element instanceof HTMLDivElement || 			element instanceof HTMLHeadingElement) { 		return element; 	}  	// for others, just return the parent node 	return element.parentNode; };  /**  * Gets the HTML element that contains the label of the given form element  * (mainly for internal use).  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|Morebits.quickForm.element)} element  * @returns {HTMLElement}  */ Morebits.quickForm.getElementLabelObject = function QuickFormGetElementLabelObject(element) { 	// for buttons, divs and headers, the label is on the element itself 	if (element.type === 'button' || element.type === 'submit' || 			element instanceof HTMLDivElement || element instanceof HTMLHeadingElement) { 		return element; 	// for fieldsets, the label is the child <legend> element 	} else if (element instanceof HTMLFieldSetElement) { 		return element.getElementsByTagName('legend')[0]; 	// for textareas, the label is the sibling <h5> element 	} else if (element instanceof HTMLTextAreaElement) { 		return element.parentNode.getElementsByTagName('h5')[0]; 	} 	// for others, the label is the sibling <label> element 	return element.parentNode.getElementsByTagName('label')[0]; };  /**  * Gets the label text of the element.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|Morebits.quickForm.element)} element  * @returns {string}  */ Morebits.quickForm.getElementLabel = function QuickFormGetElementLabel(element) { 	var labelElement = Morebits.quickForm.getElementLabelObject(element);  	if (!labelElement) { 		return null; 	} 	return labelElement.firstChild.textContent; };  /**  * Sets the label of the element to the given text.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|Morebits.quickForm.element)} element  * @param {string} labelText  * @returns {boolean} True if succeeded, false if the label element is unavailable.  */ Morebits.quickForm.setElementLabel = function QuickFormSetElementLabel(element, labelText) { 	var labelElement = Morebits.quickForm.getElementLabelObject(element);  	if (!labelElement) { 		return false; 	} 	labelElement.firstChild.textContent = labelText; 	return true; };  /**  * Stores the element's current label, and temporarily sets the label to the given text.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|Morebits.quickForm.element)} element  * @param {string} temporaryLabelText  * @returns {boolean} `true` if succeeded, `false` if the label element is unavailable.  */ Morebits.quickForm.overrideElementLabel = function QuickFormOverrideElementLabel(element, temporaryLabelText) { 	if (!element.hasAttribute('data-oldlabel')) { 		element.setAttribute('data-oldlabel', Morebits.quickForm.getElementLabel(element)); 	} 	return Morebits.quickForm.setElementLabel(element, temporaryLabelText); };  /**  * Restores the label stored by overrideElementLabel.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|Morebits.quickForm.element)} element  * @returns {boolean} True if succeeded, false if the label element is unavailable.  */ Morebits.quickForm.resetElementLabel = function QuickFormResetElementLabel(element) { 	if (element.hasAttribute('data-oldlabel')) { 		return Morebits.quickForm.setElementLabel(element, element.getAttribute('data-oldlabel')); 	} 	return null; };  /**  * Shows or hides a form element plus its label and tooltip.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|jQuery|string)} element - HTML/jQuery element, or jQuery selector string.  * @param {boolean} [visibility] - Skip this to toggle visibility.  */ Morebits.quickForm.setElementVisibility = function QuickFormSetElementVisibility(element, visibility) { 	$(element).toggle(visibility); };  /**  * Shows or hides the question mark icon (which displays the tooltip) next to a form element.  *  * @memberof Morebits.quickForm  * @param {(HTMLElement|jQuery)} element  * @param {boolean} [visibility] - Skip this to toggle visibility.  */ Morebits.quickForm.setElementTooltipVisibility = function QuickFormSetElementTooltipVisibility(element, visibility) { 	$(Morebits.quickForm.getElementContainer(element)).find('.morebits-tooltipButton').toggle(visibility); };  /**  * @external HTMLFormElement  */ /**  * Get checked items in the form.  *  * @function external:HTMLFormElement.getChecked  * @param {string} name - Find checked property of elements (i.e. a checkbox  * or a radiobutton) with the given name, or select options that have selected  * set to true (don't try to mix selects with radio/checkboxes).  * @param {string} [type] - Optionally specify either radio or checkbox (for  * the event that both checkboxes and radiobuttons have the same name).  * @returns {string[]} - Contains the values of elements with the given name  * checked property set to true.  */ HTMLFormElement.prototype.getChecked = function(name, type) { 	var elements = this.elements[name]; 	if (!elements) { 		return []; 	} 	var return_array = []; 	var i; 	if (elements instanceof HTMLSelectElement) { 		var options = elements.options; 		for (i = 0; i < options.length; ++i) { 			if (options[i].selected) { 				if (options[i].values) { 					return_array.push(options[i].values); 				} else { 					return_array.push(options[i].value); 				}  			} 		} 	} else if (elements instanceof HTMLInputElement) { 		if (type && elements.type !== type) { 			return []; 		} else if (elements.checked) { 			return [ elements.value ]; 		} 	} else { 		for (i = 0; i < elements.length; ++i) { 			if (elements[i].checked) { 				if (type && elements[i].type !== type) { 					continue; 				} 				if (elements[i].values) { 					return_array.push(elements[i].values); 				} else { 					return_array.push(elements[i].value); 				} 			} 		} 	} 	return return_array; };  /**  * Does the same as {@link HTMLFormElement.getChecked|getChecked}, but with unchecked elements.  *  * @function external:HTMLFormElement.getUnchecked  * @param {string} name - Find checked property of elements (i.e. a checkbox  * or a radiobutton) with the given name, or select options that have selected  * set to true (don't try to mix selects with radio/checkboxes).  * @param {string} [type] - Optionally specify either radio or checkbox (for  * the event that both checkboxes and radiobuttons have the same name).  * @returns {string[]} - Contains the values of elements with the given name  * checked property set to true.  */ HTMLFormElement.prototype.getUnchecked = function(name, type) { 	var elements = this.elements[name]; 	if (!elements) { 		return []; 	} 	var return_array = []; 	var i; 	if (elements instanceof HTMLSelectElement) { 		var options = elements.options; 		for (i = 0; i < options.length; ++i) { 			if (!options[i].selected) { 				if (options[i].values) { 					return_array.push(options[i].values); 				} else { 					return_array.push(options[i].value); 				}  			} 		} 	} else if (elements instanceof HTMLInputElement) { 		if (type && elements.type !== type) { 			return []; 		} else if (!elements.checked) { 			return [ elements.value ]; 		} 	} else { 		for (i = 0; i < elements.length; ++i) { 			if (!elements[i].checked) { 				if (type && elements[i].type !== type) { 					continue; 				} 				if (elements[i].values) { 					return_array.push(elements[i].values); 				} else { 					return_array.push(elements[i].value); 				} 			} 		} 	} 	return return_array; };  /**  * Utilities to help process IP addresses.  *  * @namespace Morebits.ip  * @memberof Morebits  */ Morebits.ip = { 	/** 	 * Converts an IPv6 address to the canonical form stored and used by MediaWiki. 	 * JavaScript translation of the {@link https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/8eb6ac3e84ea3312d391ca96c12c49e3ad0753bb/includes/utils/IP.php#131|`IP::sanitizeIP()`} 	 * function from the IPUtils library.  Addresses are verbose, uppercase, 	 * normalized, and expanded to 8 words. 	 * 	 * @param {string} address - The IPv6 address, with or without CIDR. 	 * @returns {string} 	 */ 	sanitizeIPv6: function (address) { 		address = address.trim(); 		if (address === '') { 			return null; 		} 		if (!mw.util.isIPv6Address(address, true)) { 			return address; // nothing else to do for IPv4 addresses or invalid ones 		} 		// Remove any whitespaces, convert to upper case 		address = address.toUpperCase(); 		// Expand zero abbreviations 		var abbrevPos = address.indexOf('::'); 		if (abbrevPos > -1) { 			// We know this is valid IPv6. Find the last index of the 			// address before any CIDR number (e.g. "a:b:c::/24"). 			var CIDRStart = address.indexOf('/'); 			var addressEnd = CIDRStart !== -1 ? CIDRStart - 1 : address.length - 1; 			// If the '::' is at the beginning... 			var repeat, extra, pad; 			if (abbrevPos === 0) { 				repeat = '0:'; 				extra = address === '::' ? '0' : ''; // for the address '::' 				pad = 9; // 7+2 (due to '::') 				// If the '::' is at the end... 			} else if (abbrevPos === (addressEnd - 1)) { 				repeat = ':0'; 				extra = ''; 				pad = 9; // 7+2 (due to '::') 				// If the '::' is in the middle... 			} else { 				repeat = ':0'; 				extra = ':'; 				pad = 8; // 6+2 (due to '::') 			} 			var replacement = repeat; 			pad -= address.split(':').length - 1; 			for (var i = 1; i < pad; i++) { 				replacement += repeat; 			} 			replacement += extra; 			address = address.replace('::', replacement); 		} 		// Remove leading zeros from each bloc as needed 		return address.replace(/(^|:)0+([0-9A-Fa-f]{1,4})/g, '$1$2'); 	},  	/** 	 * Determine if the given IP address is a range.  Just conjoins 	 * `mw.util.isIPAddress` with and without the `allowBlock` option. 	 * 	 * @param {string} ip 	 * @returns {boolean} - True if given a valid IP address range, false otherwise. 	 */ 	isRange: function (ip) { 		return mw.util.isIPAddress(ip, true) && !mw.util.isIPAddress(ip); 	},  	/** 	 * Check that an IP range is within the CIDR limits.  Most likely to be useful 	 * in conjunction with `wgRelevantUserName`.  CIDR limits are hardcoded as /16 	 * for IPv4 and /32 for IPv6. 	 * 	 * @returns {boolean} - True for valid ranges within the CIDR limits, 	 * otherwise false (ranges outside the limit, single IPs, non-IPs). 	 */ 	validCIDR: function (ip) { 		if (Morebits.ip.isRange(ip)) { 			var subnet = parseInt(ip.match(/\/(\d{1,3})$/)[1], 10); 			if (subnet) { // Should be redundant 				if (mw.util.isIPv6Address(ip, true)) { 					if (subnet >= 32) { 						return true; 					} 				} else { 					if (subnet >= 16) { 						return true; 					} 				} 			} 		} 		return false; 	},  	/** 	 * Get the /64 subnet for an IPv6 address. 	 * 	 * @param {string} ipv6 - The IPv6 address, with or without a subnet. 	 * @returns {boolean|string} - False if not IPv6 or bigger than a 64, 	 * otherwise the (sanitized) /64 address. 	 */ 	get64: function (ipv6) { 		if (!ipv6 || !mw.util.isIPv6Address(ipv6, true)) { 			return false; 		} 		var subnetMatch = ipv6.match(/\/(\d{1,3})$/); 		if (subnetMatch && parseInt(subnetMatch[1], 10) < 64) { 			return false; 		} 		ipv6 = Morebits.ip.sanitizeIPv6(ipv6); 		var ip_re = /^((?:[0-9A-F]{1,4}:){4})(?:[0-9A-F]{1,4}:){3}[0-9A-F]{1,4}(?:\/\d{1,3})?$/; 		return ipv6.replace(ip_re, '$1' + '0:0:0:0/64'); 	} };  /**  * Helper functions to manipulate strings.  *  * @namespace Morebits.string  * @memberof Morebits  */ Morebits.string = { 	/** 	 * @param {string} str 	 * @returns {string} 	 */ 	toUpperCaseFirstChar: function(str) { 		str = str.toString(); 		return str.substr(0, 1).toUpperCase() + str.substr(1); 	}, 	/** 	 * @param {string} str 	 * @returns {string} 	 */ 	toLowerCaseFirstChar: function(str) { 		str = str.toString(); 		return str.substr(0, 1).toLowerCase() + str.substr(1); 	},  	/** 	 * Gives an array of substrings of `str` - starting with `start` and 	 * ending with `end` - which is not in `skiplist`.  Intended for use 	 * on wikitext with templates or links. 	 * 	 * @param {string} str 	 * @param {string} start 	 * @param {string} end 	 * @param {(string[]|string)} [skiplist] 	 * @returns {string[]} 	 * @throws If the `start` and `end` strings aren't of the same length. 	 * @throws If `skiplist` isn't an array or string 	 */ 	splitWeightedByKeys: function(str, start, end, skiplist) { 		if (start.length !== end.length) { 			throw new Error('start marker and end marker must be of the same length'); 		} 		var level = 0; 		var initial = null; 		var result = []; 		if (!Array.isArray(skiplist)) { 			if (skiplist === undefined) { 				skiplist = []; 			} else if (typeof skiplist === 'string') { 				skiplist = [ skiplist ]; 			} else { 				throw new Error('non-applicable skiplist parameter'); 			} 		} 		for (var i = 0; i < str.length; ++i) { 			for (var j = 0; j < skiplist.length; ++j) { 				if (str.substr(i, skiplist[j].length) === skiplist[j]) { 					i += skiplist[j].length - 1; 					continue; 				} 			} 			if (str.substr(i, start.length) === start) { 				if (initial === null) { 					initial = i; 				} 				++level; 				i += start.length - 1; 			} else if (str.substr(i, end.length) === end) { 				--level; 				i += end.length - 1; 			} 			if (!level && initial !== null) { 				result.push(str.substring(initial, i + 1)); 				initial = null; 			} 		}  		return result; 	},  	/** 	 * Formats freeform "reason" (from a textarea) for deletion/other 	 * templates that are going to be substituted, (e.g. PROD, XFD, RPP). 	 * Handles `|` outside a nowiki tag. 	 * Optionally, also adds a signature if not present already. 	 * 	 * @param {string} str 	 * @param {boolean} [addSig] 	 * @returns {string} 	 */ 	formatReasonText: function(str, addSig) { 		var reason = (str || '').toString().trim(); 		var unbinder = new Morebits.unbinder(reason); 		unbinder.unbind('<no' + 'wiki>', '</no' + 'wiki>'); 		unbinder.content = unbinder.content.replace(/\|/g, '{{subst:!}}'); 		reason = unbinder.rebind(); 		if (addSig) { 			var sig = '~~~~', sigIndex = reason.lastIndexOf(sig); 			if (sigIndex === -1 || sigIndex !== reason.length - sig.length) { 				reason += ' ' + sig; 			} 		} 		return reason.trim(); 	},  	/** 	 * Formats a "reason" (from a textarea) for inclusion in a userspace 	 * log.  Replaces newlines with {{Pb}}, and adds an extra `#` before 	 * list items for proper formatting. 	 * 	 * @param {string} str 	 * @returns {string} 	 */ 	formatReasonForLog: function(str) { 		return str 			// handle line breaks, which otherwise break numbering 			.replace(/\n+/g, '{{pb}}') 			// put an extra # in front before bulleted or numbered list items 			.replace(/^(#+)/mg, '#$1') 			.replace(/^(\*+)/mg, '#$1'); 	},  	/** 	 * Like `String.prototype.replace()`, but escapes any dollar signs in 	 * the replacement string.  Useful when the the replacement string is 	 * arbitrary, such as a username or freeform user input, and could 	 * contain dollar signs. 	 * 	 * @param {string} string - Text in which to replace. 	 * @param {(string|RegExp)} pattern 	 * @param {string} replacement 	 * @returns {string} 	 */ 	safeReplace: function morebitsStringSafeReplace(string, pattern, replacement) { 		return string.replace(pattern, replacement.replace(/\$/g, '$$$$')); 	},  	/** 	 * Determine if the user-provided expiration will be considered an 	 * infinite-length by MW. 	 * 	 * @see {@link https://phabricator.wikimedia.org/T68646} 	 * 	 * @param {string} expiry 	 * @returns {boolean} 	 */ 	isInfinity: function morebitsStringIsInfinity(expiry) { 		return ['indefinite', 'infinity', 'infinite', 'never'].indexOf(expiry) !== -1; 	},  	/** 	 * Escapes a string to be used in a RegExp, replacing spaces and 	 * underscores with `[_ ]` as they are often equivalent. 	 * 	 * @param {string} text - String to be escaped. 	 * @returns {string} - The escaped text. 	 */ 	escapeRegExp: function(text) { 		return mw.util.escapeRegExp(text).replace(/ |_/g, '[_ ]'); 	} };  /**  * Helper functions to manipulate arrays.  *  * @namespace Morebits.array  * @memberof Morebits  */ Morebits.array = { 	/** 	 * Remove duplicated items from an array. 	 * 	 * @param {Array} arr 	 * @returns {Array} A copy of the array with duplicates removed. 	 * @throws When provided a non-array. 	 */ 	uniq: function(arr) { 		if (!Array.isArray(arr)) { 			throw 'A non-array object passed to Morebits.array.uniq'; 		} 		return arr.filter(function(item, idx) { 			return arr.indexOf(item) === idx; 		}); 	},  	/** 	 * Remove non-duplicated items from an array. 	 * 	 * @param {Array} arr 	 * @returns {Array} A copy of the array with the first instance of each value 	 * removed; subsequent instances of those values (duplicates) remain. 	 * @throws When provided a non-array. 	 */ 	dups: function(arr) { 		if (!Array.isArray(arr)) { 			throw 'A non-array object passed to Morebits.array.dups'; 		} 		return arr.filter(function(item, idx) { 			return arr.indexOf(item) !== idx; 		}); 	},  	/** 	 * Break up an array into smaller arrays. 	 * 	 * @param {Array} arr 	 * @param {number} size - Size of each chunk (except the last, which could be different). 	 * @returns {Array[]} An array containing the smaller, chunked arrays. 	 * @throws When provided a non-array. 	 */ 	chunk: function(arr, size) { 		if (!Array.isArray(arr)) { 			throw 'A non-array object passed to Morebits.array.chunk'; 		} 		if (typeof size !== 'number' || size <= 0) { // pretty impossible to do anything :) 			return [ arr ]; // we return an array consisting of this array. 		} 		var numChunks = Math.ceil(arr.length / size); 		var result = new Array(numChunks); 		for (var i = 0; i < numChunks; i++) { 			result[i] = arr.slice(i * size, (i + 1) * size); 		} 		return result; 	} };  /**  * Utilities to enhance select2 menus. See twinklewarn, twinklexfd,  * twinkleblock for sample usages.  *  * @see {@link https://select2.org/}  *  * @namespace Morebits.select2  * @memberof Morebits  * @requires jquery.select2  */ Morebits.select2 = { 	matchers: { 		/** 		 * Custom matcher in which if the optgroup name matches, all options in that 		 * group are shown, like in jquery.chosen. 		 */ 		optgroupFull: function(params, data) { 			var originalMatcher = $.fn.select2.defaults.defaults.matcher; 			var result = originalMatcher(params, data);  			if (result && params.term && 				data.text.toUpperCase().indexOf(params.term.toUpperCase()) !== -1) { 				result.children = data.children; 			} 			return result; 		},  		/** Custom matcher that matches from the beginning of words only. */ 		wordBeginning: function(params, data) { 			var originalMatcher = $.fn.select2.defaults.defaults.matcher; 			var result = originalMatcher(params, data); 			if (!params.term || (result && 				new RegExp('\\b' + mw.util.escapeRegExp(params.term), 'i').test(result.text))) { 				return result; 			} 			return null; 		} 	},  	/** Underline matched part of options. */ 	highlightSearchMatches: function(data) { 		var searchTerm = Morebits.select2SearchQuery; 		if (!searchTerm || data.loading) { 			return data.text; 		} 		var idx = data.text.toUpperCase().indexOf(searchTerm.toUpperCase()); 		if (idx < 0) { 			return data.text; 		}  		return $('<span>').append( 			data.text.slice(0, idx), 			$('<span>').css('text-decoration', 'underline').text(data.text.slice(idx, idx + searchTerm.length)), 			data.text.slice(idx + searchTerm.length) 		); 	},  	/** Intercept query as it is happening, for use in highlightSearchMatches. */ 	queryInterceptor: function(params) { 		Morebits.select2SearchQuery = params && params.term; 	},  	/** 	 * Open dropdown and begin search when the `.select2-selection` has 	 * focus and a key is pressed. 	 * 	 * @see {@link https://github.com/select2/select2/issues/3279#issuecomment-442524147} 	 */ 	autoStart: function(ev) { 		if (ev.which < 48) { 			return; 		} 		var target = $(ev.target).closest('.select2-container'); 		if (!target.length) { 			return; 		} 		target = target.prev(); 		target.select2('open'); 		var search = target.data('select2').dropdown.$search || 			target.data('select2').selection.$search; 		// Use DOM .focus() to work around a jQuery 3.6.0 regression (https://github.com/select2/select2/issues/5993) 		search[0].focus(); 	}  };  /**  * Temporarily hide a part of a string while processing the rest of it.  * Used by {@link Morebits.wikitext.page#commentOutImage|Morebits.wikitext.page.commentOutImage}.  *  * @memberof Morebits  * @class  * @param {string} string - The initial text to process.  * @example var u = new Morebits.unbinder('Hello world <!-- world --> world');  * u.unbind('<!--', '-->'); // text inside comment remains intact  * u.content = u.content.replace(/world/g, 'earth');  * u.rebind(); // gives 'Hello earth <!-- world --> earth'  */ Morebits.unbinder = function Unbinder(string) { 	if (typeof string !== 'string') { 		throw new Error('not a string'); 	} 	/** The text being processed. */ 	this.content = string; 	this.counter = 0; 	this.history = {}; 	this.prefix = '%UNIQ::' + Math.random() + '::'; 	this.postfix = '::UNIQ%'; };  Morebits.unbinder.prototype = { 	/** 	 * Hide the region encapsulated by the `prefix` and `postfix` from 	 * string processing.  `prefix` and `postfix` will be used in a 	 * RegExp, so items that need escaping should be use `\\`. 	 * 	 * @param {string} prefix 	 * @param {string} postfix 	 * @throws If either `prefix` or `postfix` is missing. 	 */ 	unbind: function UnbinderUnbind(prefix, postfix) { 		if (!prefix || !postfix) { 			throw new Error('Both prefix and postfix must be provided'); 		} 		var re = new RegExp(prefix + '([\\s\\S]*?)' + postfix, 'g'); 		this.content = this.content.replace(re, Morebits.unbinder.getCallback(this)); 	},  	/** 	 * Restore the hidden portion of the `content` string. 	 * 	 * @returns {string} The processed output. 	 */ 	rebind: function UnbinderRebind() { 		var content = this.content; 		content.self = this; 		for (var current in this.history) { 			if (Object.prototype.hasOwnProperty.call(this.history, current)) { 				content = content.replace(current, this.history[current]); 			} 		} 		return content; 	}, 	prefix: null, // %UNIQ::0.5955981644938324:: 	postfix: null, // ::UNIQ% 	content: null, // string 	counter: null, // 0++ 	history: null // {} }; /** @memberof Morebits.unbinder */ Morebits.unbinder.getCallback = function UnbinderGetCallback(self) { 	return function UnbinderCallback(match) { 		var current = self.prefix + self.counter + self.postfix; 		self.history[current] = match; 		++self.counter; 		return current; 	}; };  /* **************** Morebits.date **************** */ /**  * Create a date object with enhanced processing capabilities, a la  * {@link https://momentjs.com/|moment.js}. MediaWiki timestamp format is also  * acceptable, in addition to everything that JS Date() accepts.  *  * @memberof Morebits  * @class  */ Morebits.date = function() { 	var args = Array.prototype.slice.call(arguments);  	// Check MediaWiki formats 	// Must be first since firefox erroneously accepts the timestamp 	// format, sans timezone (See also: #921, #936, #1174, #1187), and the 	// 14-digit string will be interpreted differently. 	if (args.length === 1) { 		var param = args[0]; 		if (/^\d{14}$/.test(param)) { 			// YYYYMMDDHHmmss 			var digitMatch = /(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/.exec(param); 			if (digitMatch) { 				// ..... year ... month .. date ... hour .... minute ..... second 				this._d = new Date(Date.UTC.apply(null, [digitMatch[1], digitMatch[2] - 1, digitMatch[3], digitMatch[4], digitMatch[5], digitMatch[6]])); 			} 		} else if (typeof param === 'string') { 			// Wikitext signature timestamp 			var dateParts = Morebits.l10n.signatureTimestampFormat(param); 			if (dateParts) { 				this._d = new Date(Date.UTC.apply(null, dateParts)); 			} 		} 	}  	if (!this._d) { 		// Try standard date 		this._d = new (Function.prototype.bind.apply(Date, [Date].concat(args))); 	}  	// Still no? 	if (!this.isValid()) { 		mw.log.warn('Invalid Morebits.date initialisation:', args); 	} };  /**  * Localized strings for date processing.  *  * @memberof Morebits.date  * @type {object.<string, string>}  * @property {string[]} months  * @property {string[]} monthsShort  * @property {string[]} days  * @property {string[]} daysShort  * @property {object.<string, string>} relativeTimes  * @private  */ Morebits.date.localeData = { 	// message names here correspond to MediaWiki message names 	months: [msg('january', 'জানুয়ারি'), msg('february', 'ফেব্রুয়ারি'), msg('march', 'মার্চ'), 		msg('april', 'এপ্রিল'), msg('may_long', 'মে'), msg('june', 'জুন'), 		msg('july', 'জুলাই'), msg('august', 'আগস্ট'), msg('september', 'সেপ্টেম্বর'), 		msg('october', 'অক্টোবর'), msg('november', 'নভেম্বর'), msg('december', 'ডিসেম্বর')], 	monthsShort: [msg('jan', 'Jan'), msg('feb', 'Feb'), msg('mar', 'Mar'), 		msg('apr', 'Apr'), msg('may', 'May'), msg('jun', 'Jun'), 		msg('jul', 'Jul'), msg('aug', 'Aug'), msg('sep', 'Sep'), 		msg('oct', 'Oct'), msg('nov', 'Nov'), msg('dec', 'Dec')], 	days: [msg('sunday', 'Sunday'), msg('monday', 'Monday'), msg('tuesday', 'Tuesday'), 		msg('wednesday', 'Wednesday'), msg('thursday', 'Thursday'), msg('friday', 'Friday'), 		msg('saturday', 'Saturday')], 	daysShort: [msg('sun', 'Sun'), msg('mon', 'Mon'), msg('tue', 'Tue'), 		msg('wed', 'Wed'), msg('thu', 'Thu'), msg('fri', 'Fri'), 		msg('sat', 'Sat')],  	relativeTimes: { 		thisDay: msg('relative-today', '[Today at] h:mm A'), 		prevDay: msg('relative-prevday', '[Yesterday at] h:mm A'), 		nextDay: msg('relative-nextday', '[Tomorrow at] h:mm A'), 		thisWeek: msg('relative-thisweek', 'dddd [at] h:mm A'), 		pastWeek: msg('relative-pastweek', '[Last] dddd [at] h:mm A'), 		other: msg('relative-other', 'YYYY-MM-DD') 	} };  /**  * Map units with getter/setter function names, for `add` and `subtract`  * methods.  *  * @memberof Morebits.date  * @type {object.<string, string>}  * @property {string} seconds  * @property {string} minutes  * @property {string} hours  * @property {string} days  * @property {string} weeks  * @property {string} months  * @property {string} years  */ Morebits.date.unitMap = { 	seconds: 'Seconds', 	minutes: 'Minutes', 	hours: 'Hours', 	days: 'Date', 	weeks: 'Week', // Not a function but handled in `add` through cunning use of multiplication 	months: 'Month', 	years: 'FullYear' };  Morebits.date.prototype = { 	/** @returns {boolean} */ 	isValid: function() { 		return !isNaN(this.getTime()); 	},  	/** 	 * @param {(Date|Morebits.date)} date 	 * @returns {boolean} 	 */ 	isBefore: function(date) { 		return this.getTime() < date.getTime(); 	}, 	/** 	 * @param {(Date|Morebits.date)} date 	 * @returns {boolean} 	 */ 	isAfter: function(date) { 		return this.getTime() > date.getTime(); 	},  	/** @returns {string} */ 	getUTCMonthName: function() { 		return Morebits.date.localeData.months[this.getUTCMonth()]; 	}, 	/** @returns {string} */ 	getUTCMonthNameAbbrev: function() { 		return Morebits.date.localeData.monthsShort[this.getUTCMonth()]; 	}, 	/** @returns {string} */ 	getMonthName: function() { 		return Morebits.date.localeData.months[this.getMonth()]; 	}, 	/** @returns {string} */ 	getMonthNameAbbrev: function() { 		return Morebits.date.localeData.monthsShort[this.getMonth()]; 	}, 	/** @returns {string} */ 	getUTCDayName: function() { 		return Morebits.date.localeData.days[this.getUTCDay()]; 	}, 	/** @returns {string} */ 	getUTCDayNameAbbrev: function() { 		return Morebits.date.localeData.daysShort[this.getUTCDay()]; 	}, 	/** @returns {string} */ 	getDayName: function() { 		return Morebits.date.localeData.days[this.getDay()]; 	}, 	/** @returns {string} */ 	getDayNameAbbrev: function() { 		return Morebits.date.localeData.daysShort[this.getDay()]; 	},  	/** 	 * Add a given number of minutes, hours, days, weeks, months, or years to the date. 	 * This is done in-place. The modified date object is also returned, allowing chaining. 	 * 	 * @param {number} number - Should be an integer. 	 * @param {string} unit 	 * @throws If invalid or unsupported unit is given. 	 * @returns {Morebits.date} 	 */ 	add: function(number, unit) { 		var num = parseInt(number, 10); // normalize 		if (isNaN(num)) { 			throw new Error('Invalid number "' + number + '" provided.'); 		} 		unit = unit.toLowerCase(); // normalize 		var unitMap = Morebits.date.unitMap; 		var unitNorm = unitMap[unit] || unitMap[unit + 's']; // so that both singular and  plural forms work 		if (unitNorm) { 			// No built-in week functions, so rather than build out ISO's getWeek/setWeek, just multiply 			// Probably can't be used for Julian->Gregorian changeovers, etc. 			if (unitNorm === 'Week') { 				unitNorm = 'Date', num *= 7; 			} 			this['set' + unitNorm](this['get' + unitNorm]() + num); 			return this; 		} 		throw new Error('Invalid unit "' + unit + '": Only ' + Object.keys(unitMap).join(', ') + ' are allowed.'); 	},  	/** 	 * Subtracts a given number of minutes, hours, days, weeks, months, or years to the date. 	 * This is done in-place. The modified date object is also returned, allowing chaining. 	 * 	 * @param {number} number - Should be an integer. 	 * @param {string} unit 	 * @throws If invalid or unsupported unit is given. 	 * @returns {Morebits.date} 	 */ 	subtract: function(number, unit) { 		return this.add(-number, unit); 	},  	/** 	 * Format the date into a string per the given format string. 	 * Replacement syntax is a subset of that in moment.js: 	 * 	 * | Syntax | Output | 	 * |--------|--------| 	 * | H | Hours (24-hour) | 	 * | HH | Hours (24-hour, padded to 2 digits) | 	 * | h | Hours (12-hour) | 	 * | hh | Hours (12-hour, padded to 2 digits) | 	 * | A | AM or PM | 	 * | m | Minutes | 	 * | mm | Minutes (padded to 2 digits) | 	 * | s | Seconds | 	 * | ss | Seconds (padded to 2 digits) | 	 * | SSS | Milliseconds fragment, 3 digits | 	 * | d | Day number of the week (Sun=0) | 	 * | ddd | Abbreviated day name | 	 * | dddd | Full day name | 	 * | D | Date | 	 * | DD | Date (padded to 2 digits) | 	 * | M | Month number (1-indexed) | 	 * | MM | Month number (1-indexed, padded to 2 digits) | 	 * | MMM | Abbreviated month name | 	 * | MMMM | Full month name | 	 * | Y | Year | 	 * | YY | Final two digits of year (20 for 2020, 42 for 1942) | 	 * | YYYY | Year (same as `Y`) | 	 * 	 * @param {string} formatstr - Format the date into a string, using 	 * the replacement syntax.  Use `[` and `]` to escape items.  If not 	 * provided, will return the ISO-8601-formatted string. 	 * @param {(string|number)} [zone=system] - `system` (for browser-default time zone), 	 * `utc`, or specify a time zone as number of minutes relative to UTC. 	 * @returns {string} 	 */ 	format: function(formatstr, zone) { 		if (!this.isValid()) { 			return 'Invalid date'; // Put the truth out, preferable to "NaNNaNNan NaN:NaN" or whatever 		} 		var udate = this; 		// create a new date object that will contain the date to display as system time 		if (zone === 'utc') { 			udate = new Morebits.date(this.getTime()).add(this.getTimezoneOffset(), 'minutes'); 		} else if (typeof zone === 'number') { 			// convert to utc, then add the utc offset given 			udate = new Morebits.date(this.getTime()).add(this.getTimezoneOffset() + zone, 'minutes'); 		}  		// default to ISOString 		if (!formatstr) { 			return udate.toISOString(); 		}  		var pad = function(num, len) { 			len = len || 2; // Up to length of 00 + 1 			return ('00' + num).toString().slice(0 - len); 		}; 		var h24 = udate.getHours(), m = udate.getMinutes(), s = udate.getSeconds(), ms = udate.getMilliseconds(); 		var D = udate.getDate(), M = udate.getMonth() + 1, Y = udate.getFullYear(); 		var h12 = h24 % 12 || 12, amOrPm = h24 >= 12 ? msg('period-pm', 'PM') : msg('period-am', 'AM'); 		var replacementMap = { 			HH: pad(h24), H: h24, hh: pad(h12), h: h12, A: amOrPm, 			mm: pad(m), m: m, 			ss: pad(s), s: s, 			SSS: pad(ms, 3), 			dddd: udate.getDayName(), ddd: udate.getDayNameAbbrev(), d: udate.getDay(), 			DD: pad(D), D: D, 			MMMM: udate.getMonthName(), MMM: udate.getMonthNameAbbrev(), MM: pad(M), M: M, 			YYYY: Y, YY: pad(Y % 100), Y: Y 		};  		var unbinder = new Morebits.unbinder(formatstr); // escape stuff between [...] 		unbinder.unbind('\\[', '\\]'); 		unbinder.content = unbinder.content.replace( 			/* Regex notes: 			 * d(d{2,3})? matches exactly 1, 3 or 4 occurrences of 'd' ('dd' is treated as a double match of 'd') 			 * Y{1,2}(Y{2})? matches exactly 1, 2 or 4 occurrences of 'Y' 			 */ 			/H{1,2}|h{1,2}|m{1,2}|s{1,2}|SSS|d(d{2,3})?|D{1,2}|M{1,4}|Y{1,2}(Y{2})?|A/g, 			function(match) { 				return replacementMap[match]; 			} 		); 		return unbinder.rebind().replace(/\[(.*?)\]/g, '$1'); 	},  	/** 	 * Gives a readable relative time string such as "Yesterday at 6:43 PM" or "Last Thursday at 11:45 AM". 	 * Similar to `calendar` in moment.js, but with time zone support. 	 * 	 * @param {(string|number)} [zone=system] - 'system' (for browser-default time zone), 	 * 'utc' (for UTC), or specify a time zone as number of minutes past UTC. 	 * @returns {string} 	 */ 	calendar: function(zone) { 		// Zero out the hours, minutes, seconds and milliseconds - keeping only the date; 		// find the difference. Note that setHours() returns the same thing as getTime(). 		var dateDiff = (new Date().setHours(0, 0, 0, 0) - 			new Date(this).setHours(0, 0, 0, 0)) / 8.64e7; 		switch (true) { 			case dateDiff === 0: 				return this.format(Morebits.date.localeData.relativeTimes.thisDay, zone); 			case dateDiff === 1: 				return this.format(Morebits.date.localeData.relativeTimes.prevDay, zone); 			case dateDiff > 0 && dateDiff < 7: 				return this.format(Morebits.date.localeData.relativeTimes.pastWeek, zone); 			case dateDiff === -1: 				return this.format(Morebits.date.localeData.relativeTimes.nextDay, zone); 			case dateDiff < 0 && dateDiff > -7: 				return this.format(Morebits.date.localeData.relativeTimes.thisWeek, zone); 			default: 				return this.format(Morebits.date.localeData.relativeTimes.other, zone); 		} 	},  	/** 	 * Get a regular expression that matches wikitext section titles, such 	 * as `==December 2019==` or `=== Jan 2018 ===`. 	 * 	 * @returns {RegExp} 	 */ 	monthHeaderRegex: function() { 		return new RegExp('^(==+)\\s*(?:' + this.getUTCMonthName() + '|' + this.getUTCMonthNameAbbrev() + 			')\\s+' + new Date().toLocaleDateString("bn", { year: "numeric" }) + '\\s*\\1', 'mg'); 	},  	/** 	 * Creates a wikitext section header with the month and year. 	 * 	 * @param {number} [level=2] - Header level.  Pass 0 for just the text 	 * with no wikitext markers (==). 	 * @returns {string} 	 */ 	monthHeader: function(level) { 		// Default to 2, but allow for 0 or stringy numbers 		level = parseInt(level, 10); 		level = isNaN(level) ? 2 : level;  		var header = Array(level + 1).join('='); // String.prototype.repeat not supported in IE 11 		var text = this.getUTCMonthName() + ' ' + new Date().toLocaleDateString("bn", { year: "numeric" });  		if (header.length) { // wikitext-formatted header 			return header + ' ' + text + ' ' + header; 		} 		return text; // Just the string  	}  };  // Allow native Date.prototype methods to be used on Morebits.date objects Object.getOwnPropertyNames(Date.prototype).forEach(function(func) { 	// Exclude methods that collide with PageTriage's Date.js external, which clobbers native Date: [[phab:T268513]] 	if (['add', 'getDayName', 'getMonthName'].indexOf(func) === -1) { 		Morebits.date.prototype[func] = function() { 			return this._d[func].apply(this._d, Array.prototype.slice.call(arguments)); 		}; 	} });  /* **************** Morebits.wiki **************** */ /**  * Various objects for wiki editing and API access, including  * {@link Morebits.wiki.api} and {@link Morebits.wiki.page}.  *  * @namespace Morebits.wiki  * @memberof Morebits  */ Morebits.wiki = {};  /**  * @deprecated in favor of Morebits.isPageRedirect as of November 2020  * @memberof Morebits.wiki  * @returns {boolean}  */ Morebits.wiki.isPageRedirect = function wikipediaIsPageRedirect() { 	console.warn('NOTE: Morebits.wiki.isPageRedirect has been deprecated, use Morebits.isPageRedirect instead.'); // eslint-disable-line no-console 	return Morebits.isPageRedirect(); };  /* **************** Morebits.wiki.actionCompleted **************** */ /**  * @memberof Morebits.wiki  * @type {number}  */ Morebits.wiki.numberOfActionsLeft = 0; /**  * @memberof Morebits.wiki  * @type {number}  */ Morebits.wiki.nbrOfCheckpointsLeft = 0;  /**  * Display message and/or redirect to page upon completion of tasks.  *  * Every call to Morebits.wiki.api.post() results in the dispatch of an  * asynchronous callback. Each callback can in turn make an additional call to  * Morebits.wiki.api.post() to continue a processing sequence. At the  * conclusion of the final callback of a processing sequence, it is not  * possible to simply return to the original caller because there is no call  * stack leading back to the original context. Instead,  * Morebits.wiki.actionCompleted.event() is called to display the result to  * the user and to perform an optional page redirect.  *  * The determination of when to call Morebits.wiki.actionCompleted.event() is  * managed through the globals Morebits.wiki.numberOfActionsLeft and  * Morebits.wiki.nbrOfCheckpointsLeft. Morebits.wiki.numberOfActionsLeft is  * incremented at the start of every Morebits.wiki.api call and decremented  * after the completion of a callback function. If a callback function does  * not create a new Morebits.wiki.api object before exiting, it is the final  * step in the processing chain and Morebits.wiki.actionCompleted.event() will  * then be called.  *  * Optionally, callers may use Morebits.wiki.addCheckpoint() to indicate that  * processing is not complete upon the conclusion of the final callback  * function.  This is used for batch operations. The end of a batch is  * signaled by calling Morebits.wiki.removeCheckpoint().  *  * @memberof Morebits.wiki  */ Morebits.wiki.actionCompleted = function(self) { 	if (--Morebits.wiki.numberOfActionsLeft <= 0 && Morebits.wiki.nbrOfCheckpointsLeft <= 0) { 		Morebits.wiki.actionCompleted.event(self); 	} };  // Change per action wanted /** @memberof Morebits.wiki */ Morebits.wiki.actionCompleted.event = function() { 	if (Morebits.wiki.actionCompleted.notice) { 		Morebits.status.actionCompleted(Morebits.wiki.actionCompleted.notice); 	} 	if (Morebits.wiki.actionCompleted.redirect) { 		// if it isn't a URL, make it one. TODO: This breaks on the articles 'http://', 'ftp://', and similar ones. 		if (!(/^\w+:\/\//).test(Morebits.wiki.actionCompleted.redirect)) { 			Morebits.wiki.actionCompleted.redirect = mw.util.getUrl(Morebits.wiki.actionCompleted.redirect); 			if (Morebits.wiki.actionCompleted.followRedirect === false) { 				Morebits.wiki.actionCompleted.redirect += '?redirect=no'; 			} 		} 		window.setTimeout(function() { 			window.location = Morebits.wiki.actionCompleted.redirect; 		}, Morebits.wiki.actionCompleted.timeOut); 	} };  /** @memberof Morebits.wiki */ Morebits.wiki.actionCompleted.timeOut = typeof window.wpActionCompletedTimeOut === 'undefined' ? 5000 : window.wpActionCompletedTimeOut; /** @memberof Morebits.wiki */ Morebits.wiki.actionCompleted.redirect = null; /** @memberof Morebits.wiki */ Morebits.wiki.actionCompleted.notice = null;  /** @memberof Morebits.wiki */ Morebits.wiki.addCheckpoint = function() { 	++Morebits.wiki.nbrOfCheckpointsLeft; };  /** @memberof Morebits.wiki */ Morebits.wiki.removeCheckpoint = function() { 	if (--Morebits.wiki.nbrOfCheckpointsLeft <= 0 && Morebits.wiki.numberOfActionsLeft <= 0) { 		Morebits.wiki.actionCompleted.event(); 	} };  /* **************** Morebits.wiki.api **************** */ /**  * An easy way to talk to the MediaWiki API.  Accepts either json or xml  * (default) formats; if json is selected, will default to `formatversion=2`  * unless otherwise specified.  Similarly, enforces newer `errorformat`s,  * defaulting to `html` if unspecified.  `uselang` enforced to the wiki's  * content language.  *  * In new code, the use of the last 3 parameters should be avoided, instead  * use {@link Morebits.wiki.api#setStatusElement|setStatusElement()} to bind  * the status element (if needed) and use `.then()` or `.catch()` on the  * promise returned by `post()`, rather than specify the `onSuccess` or  * `onFailure` callbacks.  *  * @memberof Morebits.wiki  * @class  * @param {string} currentAction - The current action (required).  * @param {object} query - The query (required).  * @param {Function} [onSuccess] - The function to call when request is successful.  * @param {Morebits.status} [statusElement] - A Morebits.status object to use for status messages.  * @param {Function} [onError] - The function to call if an error occurs.  */ Morebits.wiki.api = function(currentAction, query, onSuccess, statusElement, onError) { 	this.currentAction = currentAction; 	this.query = query; 	this.query.assert = 'user'; 	// Enforce newer error formats, preferring html 	if (!query.errorformat || ['wikitext', 'plaintext'].indexOf(query.errorformat) === -1) { 		this.query.errorformat = 'html'; 	} 	// Explicitly use the wiki's content language to minimize confusion, 	// see #1179 for discussion 	this.query.uselang = 'content'; 	this.query.errorlang = 'uselang'; 	this.query.errorsuselocal = 1;  	this.onSuccess = onSuccess; 	this.onError = onError; 	if (statusElement) { 		this.setStatusElement(statusElement); 	} else { 		this.statelem = new Morebits.status(currentAction); 	} 	// JSON is used throughout Morebits/Twinkle, but xml remains the default for backwards compatibility 	if (!query.format) { 		this.query.format = 'xml'; 	} else if (query.format === 'json' && !query.formatversion) { 		this.query.formatversion = '2'; 	} else if (['xml', 'json'].indexOf(query.format) === -1) { 		this.statelem.error('Invalid API format: only xml and json are supported.'); 	}  	// Ignore tags for queries and most common unsupported actions, produces warnings 	if (query.action && ['query', 'review', 'stabilize', 'pagetriageaction', 'watch'].indexOf(query.action) !== -1) { 		delete query.tags; 	} else if (!query.tags && morebitsWikiChangeTag) { 		query.tags = morebitsWikiChangeTag; 	} };  Morebits.wiki.api.prototype = { 	currentAction: '', 	onSuccess: null, 	onError: null, 	parent: window,  // use global context if there is no parent object 	query: null, 	response: null, 	responseXML: null,  // use `response` instead; retained for backwards compatibility 	statelem: null,  // this non-standard name kept for backwards compatibility 	statusText: null, // result received from the API, normally "success" or "error" 	errorCode: null, // short text error code, if any, as documented in the MediaWiki API 	errorText: null, // full error description, if any 	badtokenRetry: false, // set to true if this on a retry attempted after a badtoken error  	/** 	 * Keep track of parent object for callbacks. 	 * 	 * @param {*} parent 	 */ 	setParent: function(parent) { 		this.parent = parent; 	},  	/** @param {Morebits.status} statusElement */ 	setStatusElement: function(statusElement) { 		this.statelem = statusElement; 		this.statelem.status(this.currentAction); 	},  	/** 	 * Carry out the request. 	 * 	 * @param {object} callerAjaxParameters - Do not specify a parameter unless you really 	 * really want to give jQuery some extra parameters. 	 * @returns {promise} - A jQuery promise object that is resolved or rejected with the api object. 	 */ 	post: function(callerAjaxParameters) {  		++Morebits.wiki.numberOfActionsLeft;  		var queryString = $.map(this.query, function(val, i) { 			if (Array.isArray(val)) { 				return encodeURIComponent(i) + '=' + val.map(encodeURIComponent).join('|'); 			} else if (val !== undefined) { 				return encodeURIComponent(i) + '=' + encodeURIComponent(val); 			} 		}).join('&').replace(/^(.*?)(\btoken=[^&]*)&(.*)/, '$1$3&$2'); 		// token should always be the last item in the query string (bug TW-B-0013)  		var ajaxparams = $.extend({}, { 			context: this, 			type: this.query.action === 'query' ? 'GET' : 'POST', 			url: mw.util.wikiScript('api'), 			data: queryString, 			dataType: this.query.format, 			headers: { 				'Api-User-Agent': morebitsWikiApiUserAgent 			} 		}, callerAjaxParameters);  		return $.ajax(ajaxparams).then(  			function onAPIsuccess(response, statusText) { 				this.statusText = statusText; 				this.response = this.responseXML = response; 				// Limit to first error 				if (this.query.format === 'json') { 					this.errorCode = response.errors && response.errors[0].code; 					if (this.query.errorformat === 'html') { 						this.errorText = response.errors && response.errors[0].html; 					} else if (this.query.errorformat === 'wikitext' || this.query.errorformat === 'plaintext') { 						this.errorText = response.errors && response.errors[0].text; 					} 				} else { 					this.errorCode = $(response).find('errors error').eq(0).attr('code'); 					// Sufficient for html, wikitext, or plaintext errorformats 					this.errorText = $(response).find('errors error').eq(0).text(); 				}  				if (typeof this.errorCode === 'string') { 					// the API didn't like what we told it, e.g., bad edit token or an error creating a page 					return this.returnError(callerAjaxParameters); 				}  				// invoke success callback if one was supplied 				if (this.onSuccess) { 					// set the callback context to this.parent for new code and supply the API object 					// as the first argument to the callback (for legacy code) 					this.onSuccess.call(this.parent, this); 				} else { 					this.statelem.info(msg('done', 'করা হয়েছে')); 				}  				Morebits.wiki.actionCompleted();  				return $.Deferred().resolveWith(this.parent, [this]); 			},  			// only network and server errors reach here - complaints from the API itself are caught in success() 			function onAPIfailure(jqXHR, statusText, errorThrown) { 				this.statusText = statusText; 				this.errorThrown = errorThrown; // frequently undefined 				this.errorText = msg('api-error', statusText, jqXHR.statusText, statusText + ' "' + jqXHR.statusText + '" occurred while contacting the API.'); 				return this.returnError(); 			}  		); 	},  	returnError: function(callerAjaxParameters) { 		if (this.errorCode === 'badtoken' && !this.badtokenRetry) { 			this.statelem.warn(msg('invalid-token-retrying', 'টোকেন অবৈধ। একটি নতুন টোকেন নেওয়া হচ্ছে ও পুনঃচেষ্টা করা হচ্ছে...')); 			this.badtokenRetry = true; 			// Get a new CSRF token and retry. If the original action needs a different 			// type of action than CSRF, we do one pointless retry before bailing out 			return Morebits.wiki.api.getToken().then(function(token) { 				this.query.token = token; 				return this.post(callerAjaxParameters); 			}.bind(this)); 		}  		this.statelem.error(this.errorText + ' (' + this.errorCode + ')');  		// invoke failure callback if one was supplied 		if (this.onError) {  			// set the callback context to this.parent for new code and supply the API object 			// as the first argument to the callback for legacy code 			this.onError.call(this.parent, this); 		} 		// don't complete the action so that the error remains displayed  		return $.Deferred().rejectWith(this.parent, [this]); 	},  	getStatusElement: function() { 		return this.statelem; 	},  	getErrorCode: function() { 		return this.errorCode; 	},  	getErrorText: function() { 		return this.errorText; 	},  	getXML: function() { // retained for backwards compatibility, use getResponse() instead 		return this.responseXML; 	},  	getResponse: function() { 		return this.response; 	}  }; /** Retrieves wikitext from a page. Caching enabled, duration 1 day. */ Morebits.wiki.getCachedJson = function(title) { 	var query = { 		action: 'query', 		prop: 'revisions', 		titles: title, 		rvslots: '*', 		rvprop: 'content', 		format: 'json', 		smaxage: '86400', // cache for 1 day 		maxage: '86400' // cache for 1 day 	}; 	return new Morebits.wiki.api('', query).post().then(function(apiobj) { 		apiobj.getStatusElement().unlink(); 		var response = apiobj.getResponse(); 		var wikitext = response.query.pages[0].revisions[0].slots.main.content; 		return JSON.parse(wikitext); 	}); }; var morebitsWikiApiUserAgent = 'morebits.js ([[w:WT:TW]])'; /**  * Set the custom user agent header, which is used for server-side logging.  * Note that doing so will set the useragent for every `Morebits.wiki.api`  * process performed thereafter.  *  * @see {@link https://lists.wikimedia.org/pipermail/mediawiki-api-announce/2014-November/000075.html}  * for original announcement.  *  * @memberof Morebits.wiki.api  * @param {string} [ua=morebits.js ([[w:WT:TW]])] - User agent.  The default  * value of `morebits.js ([[w:WT:TW]])` will be appended to any provided  * value.  */ Morebits.wiki.api.setApiUserAgent = function(ua) { 	morebitsWikiApiUserAgent = (ua ? ua + ' ' : '') + 'morebits.js ([[w:WT:TW]])'; };  /**  * Change/revision tag applied to Morebits actions when no other tags are specified.  * Unused by default per {@link https://en.wikipedia.org/w/index.php?oldid=970618849#Adding_tags_to_Twinkle_edits_and_actions|EnWiki consensus}.  *  * @constant  * @memberof Morebits.wiki.api  * @type {string}  */ var morebitsWikiChangeTag = '';  /**  * Get a new CSRF token on encountering token errors.  *  * @memberof Morebits.wiki.api  * @returns {string} MediaWiki CSRF token.  */ Morebits.wiki.api.getToken = function() { 	var tokenApi = new Morebits.wiki.api(msg('getting-token', 'Getting token'), { 		action: 'query', 		meta: 'tokens', 		type: 'csrf', 		format: 'json' 	}); 	return tokenApi.post().then(function(apiobj) { 		return apiobj.response.query.tokens.csrftoken; 	}); };  /* **************** Morebits.wiki.page **************** */ /**  * Use the MediaWiki API to load a page and optionally edit it, move it, etc.  *  * Callers are not permitted to directly access the properties of this class!  * All property access is through the appropriate get___() or set___() method.  *  * Callers should set {@link Morebits.wiki.actionCompleted.notice} and {@link Morebits.wiki.actionCompleted.redirect}  * before the first call to {@link Morebits.wiki.page.load()}.  *  * Each of the callback functions takes one parameter, which is a  * reference to the Morebits.wiki.page object that registered the callback.  * Callback functions may invoke any Morebits.wiki.page prototype method using this reference.  *  *  * Call sequence for common operations (optional final user callbacks not shown):  *  * - Edit current contents of a page (no edit conflict):  * `.load(userTextEditCallback) -> ctx.loadApi.post() ->  * ctx.loadApi.post.success() -> ctx.fnLoadSuccess() -> userTextEditCallback() ->  * .save() -> ctx.saveApi.post() -> ctx.loadApi.post.success() -> ctx.fnSaveSuccess()`  *  * - Edit current contents of a page (with edit conflict):  * `.load(userTextEditCallback) -> ctx.loadApi.post() ->  * ctx.loadApi.post.success() -> ctx.fnLoadSuccess() -> userTextEditCallback() ->  * .save() -> ctx.saveApi.post() -> ctx.loadApi.post.success() ->  * ctx.fnSaveError() -> ctx.loadApi.post() -> ctx.loadApi.post.success() ->  * ctx.fnLoadSuccess() -> userTextEditCallback() -> .save() ->  * ctx.saveApi.post() -> ctx.loadApi.post.success() -> ctx.fnSaveSuccess()`  *  * - Append to a page (similar for prepend and newSection):  * `.append() -> ctx.loadApi.post() -> ctx.loadApi.post.success() ->  * ctx.fnLoadSuccess() -> ctx.fnAutoSave() -> .save() -> ctx.saveApi.post() ->  * ctx.loadApi.post.success() -> ctx.fnSaveSuccess()`  *  * Notes:  * 1. All functions following Morebits.wiki.api.post() are invoked asynchronously from the jQuery AJAX library.  * 2. The sequence for append/prepend/newSection could be slightly shortened,  * but it would require significant duplication of code for little benefit.  *  *  * @memberof Morebits.wiki  * @class  * @param {string} pageName - The name of the page, prefixed by the namespace (if any).  * For the current page, use `mw.config.get('wgPageName')`.  * @param {string|Morebits.status} [status] - A string describing the action about to be undertaken,  * or a Morebits.status object  */ Morebits.wiki.page = function(pageName, status) {  	if (!status) { 		status = msg('opening-page', pageName, '"' + pageName + '" খোলা হচ্ছে'); 	}  	/** 	 * Private context variables. 	 * 	 * This context is not visible to the outside, thus all the data here 	 * must be accessed via getter and setter functions. 	 * 	 * @private 	 */ 	var ctx = { 		// backing fields for public properties 		pageName: pageName, 		pageExists: false, 		editSummary: null, 		changeTags: null, 		testActions: null,  // array if any valid actions 		callbackParameters: null, 		statusElement: status instanceof Morebits.status ? status : new Morebits.status(status),  		// - edit 		pageText: null, 		editMode: 'all',  // save() replaces entire contents of the page by default 		appendText: null,   // can't reuse pageText for this because pageText is needed to follow a redirect 		prependText: null,  // can't reuse pageText for this because pageText is needed to follow a redirect 		newSectionText: null, 		newSectionTitle: null, 		createOption: null, 		minorEdit: false, 		botEdit: false, 		pageSection: null, 		maxConflictRetries: 2, 		maxRetries: 2, 		followRedirect: false, 		followCrossNsRedirect: true, 		watchlistOption: 'nochange', 		watchlistExpiry: null, 		creator: null, 		timestamp: null,  		// - revert 		revertOldID: null,  		// - move 		moveDestination: null, 		moveTalkPage: false, 		moveSubpages: false, 		moveSuppressRedirect: false,  		// - protect 		protectEdit: null, 		protectMove: null, 		protectCreate: null, 		protectCascade: null,  		// - creation lookup 		lookupNonRedirectCreator: false,  		// - stabilize (FlaggedRevs) 		flaggedRevs: null,  		// internal status 		pageLoaded: false, 		csrfToken: null, 		loadTime: null, 		lastEditTime: null, 		pageID: null, 		contentModel: null, 		revertCurID: null, 		revertUser: null, 		watched: false, 		fullyProtected: false, 		suppressProtectWarning: false, 		conflictRetries: 0, 		retries: 0,  		// callbacks 		onLoadSuccess: null, 		onLoadFailure: null, 		onSaveSuccess: null, 		onSaveFailure: null, 		onLookupCreationSuccess: null, 		onLookupCreationFailure: null, 		onMoveSuccess: null, 		onMoveFailure: null, 		onDeleteSuccess: null, 		onDeleteFailure: null, 		onUndeleteSuccess: null, 		onUndeleteFailure: null, 		onProtectSuccess: null, 		onProtectFailure: null, 		onStabilizeSuccess: null, 		onStabilizeFailure: null,  		// internal objects 		loadQuery: null, 		loadApi: null, 		saveApi: null, 		lookupCreationApi: null, 		moveApi: null, 		moveProcessApi: null, 		patrolApi: null, 		patrolProcessApi: null, 		triageApi: null, 		triageProcessListApi: null, 		triageProcessApi: null, 		deleteApi: null, 		deleteProcessApi: null, 		undeleteApi: null, 		undeleteProcessApi: null, 		protectApi: null, 		protectProcessApi: null, 		stabilizeApi: null, 		stabilizeProcessApi: null 	};  	var emptyFunction = function() { };  	/** 	 * Loads the text for the page. 	 * 	 * @param {Function} onSuccess - Callback function which is called when the load has succeeded. 	 * @param {Function} [onFailure] - Callback function which is called when the load fails. 	 */ 	this.load = function(onSuccess, onFailure) { 		ctx.onLoadSuccess = onSuccess; 		ctx.onLoadFailure = onFailure || emptyFunction;  		// Need to be able to do something after the page loads 		if (!onSuccess) { 			ctx.statusElement.error('Internal error: no onSuccess callback provided to load()!'); 			ctx.onLoadFailure(this); 			return; 		}  		ctx.loadQuery = { 			action: 'query', 			prop: 'info|revisions', 			inprop: 'watched', 			intestactions: 'edit', // can be expanded 			curtimestamp: '', 			meta: 'tokens', 			type: 'csrf', 			titles: ctx.pageName, 			format: 'json' 			// don't need rvlimit=1 because we don't need rvstartid here and only one actual rev is returned by default 		};  		if (ctx.editMode === 'all') { 			ctx.loadQuery.rvprop = 'content|timestamp';  // get the page content at the same time, if needed 		} else if (ctx.editMode === 'revert') { 			ctx.loadQuery.rvprop = 'timestamp'; 			ctx.loadQuery.rvlimit = 1; 			ctx.loadQuery.rvstartid = ctx.revertOldID; 		}  		if (ctx.followRedirect) { 			ctx.loadQuery.redirects = '';  // follow all redirects 		} 		if (typeof ctx.pageSection === 'number') { 			ctx.loadQuery.rvsection = ctx.pageSection; 		} 		if (Morebits.userIsSysop) { 			ctx.loadQuery.inprop += '|protection'; 		}  		ctx.loadApi = new Morebits.wiki.api(msg('retrieving-page', 'পাতা খোঁজা হচ্ছে...'), ctx.loadQuery, fnLoadSuccess, ctx.statusElement, ctx.onLoadFailure); 		ctx.loadApi.setParent(this); 		ctx.loadApi.post(); 	};  	/** 	 * Saves the text for the page to Wikipedia. 	 * Must be preceded by successfully calling `load()`. 	 * 	 * Warning: Calling `save()` can result in additional calls to the 	 * previous `load()` callbacks to recover from edit conflicts! In this 	 * case, callers must make the same edit to the new pageText and 	 * re-invoke `save()`.  This behavior can be disabled with 	 * `setMaxConflictRetries(0)`. 	 * 	 * @param {Function} [onSuccess] - Callback function which is called when the save has succeeded. 	 * @param {Function} [onFailure] - Callback function which is called when the save fails. 	 */ 	this.save = function(onSuccess, onFailure) { 		ctx.onSaveSuccess = onSuccess; 		ctx.onSaveFailure = onFailure || emptyFunction;  		// are we getting our editing token from mw.user.tokens? 		var canUseMwUserToken = fnCanUseMwUserToken('edit');  		if (!ctx.pageLoaded && !canUseMwUserToken) { 			ctx.statusElement.error('অভ্যন্তরীণ ত্রুটি: লোড করা হয়নি এমন একটি পাতা সংরক্ষণ করার চেষ্টা করা হয়েছে!'); 			ctx.onSaveFailure(this); 			return; 		} 		if (!ctx.editSummary) { 			// new section mode allows (nay, encourages) using the 			// title as the edit summary, but the query needs 			// editSummary to be undefined or '', not null 			if (ctx.editMode === 'new' && ctx.newSectionTitle) { 				ctx.editSummary = ''; 			} else { 				ctx.statusElement.error('অভ্যন্তরীণ ত্রুটি: সংরক্ষণ করার আগে সারাংশ নির্ধারণ করা হয়নি!'); 				ctx.onSaveFailure(this); 				return; 			} 		}  		// shouldn't happen if canUseMwUserToken === true 		if (ctx.fullyProtected && !ctx.suppressProtectWarning && 			!confirm( 				ctx.fullyProtected === 'infinity' 					? msg('protected-indef-edit-warning', ctx.pageName, 						'আপনি সম্পূর্ণভাবে সুরক্ষিত একটি পাতায় সম্পাদনা করতে চলেছেন: "' + ctx.pageName + '" (অসীমভাবে সুরক্ষিত)।  \n\nসম্পাদনাটি করতে অগ্রসর হতে "ঠিক আছে" ক্লিক করুন অথবা এই সম্পাদনাটি না করতে "বাতিল" ক্লিক করুন।' 					) 					: msg('protected-edit-warning', ctx.pageName, ctx.fullyProtected, 						'আপনি সম্পূর্ণভাবে সুরক্ষিত একটি পাতায় সম্পাদনা করতে চলেছেন: "' + ctx.pageName + 					'" (সুরক্ষার মেয়াদ শেষ হবার তারিখ ' + new Morebits.date(ctx.fullyProtected).calendar('utc') + ' (ইউটিসি))।  \n\nসম্পাদনাটি করতে অগ্রসর হতে "ঠিক আছে" ক্লিক করুন অথবা এই সম্পাদনাটি না করতে "বাতিল" ক্লিক করুন।' 					) 			) 		) { 			ctx.statusElement.error(msg('protected-aborted', 'সম্পূর্ণ সুরক্ষিত পাতা সম্পাদনা করা বাতিল হয়েছে।')); 			ctx.onSaveFailure(this); 			return; 		}  		ctx.retries = 0;  		var query = { 			action: 'edit', 			title: ctx.pageName, 			summary: ctx.editSummary, 			token: canUseMwUserToken ? mw.user.tokens.get('csrfToken') : ctx.csrfToken, 			watchlist: ctx.watchlistOption, 			format: 'json' 		}; 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		}  		if (typeof ctx.pageSection === 'number') { 			query.section = ctx.pageSection; 		}  		// Set minor edit attribute. If these parameters are present with any value, it is interpreted as true 		if (ctx.minorEdit) { 			query.minor = true; 		} else { 			query.notminor = true;  // force Twinkle config to override user preference setting for "all edits are minor" 		}  		// Set bot edit attribute. If this parameter is present with any value, it is interpreted as true 		if (ctx.botEdit) { 			query.bot = true; 		}  		switch (ctx.editMode) { 			case 'append': 				if (ctx.appendText === null) { 					ctx.statusElement.error('Internal error: append text not set before save!'); 					ctx.onSaveFailure(this); 					return; 				} 				query.appendtext = ctx.appendText;  // use mode to append to current page contents 				break; 			case 'prepend': 				if (ctx.prependText === null) { 					ctx.statusElement.error('Internal error: prepend text not set before save!'); 					ctx.onSaveFailure(this); 					return; 				} 				query.prependtext = ctx.prependText;  // use mode to prepend to current page contents 				break; 			case 'new': 				if (!ctx.newSectionText) { // API doesn't allow empty new section text 					ctx.statusElement.error('Internal error: new section text not set before save!'); 					ctx.onSaveFailure(this); 					return; 				} 				query.section = 'new'; 				query.text = ctx.newSectionText;  // add a new section to current page 				query.sectiontitle = ctx.newSectionTitle || ctx.editSummary; // done by the API, but non-'' values would get treated as text 				break; 			case 'revert': 				query.undo = ctx.revertCurID; 				query.undoafter = ctx.revertOldID; 				if (ctx.lastEditTime) { 					query.basetimestamp = ctx.lastEditTime; // check that page hasn't been edited since it was loaded 				} 				query.starttimestamp = ctx.loadTime; // check that page hasn't been deleted since it was loaded (don't recreate bad stuff) 				break; 			default: // 'all' 				query.text = ctx.pageText; // replace entire contents of the page 				if (ctx.lastEditTime) { 					query.basetimestamp = ctx.lastEditTime; // check that page hasn't been edited since it was loaded 				} 				query.starttimestamp = ctx.loadTime; // check that page hasn't been deleted since it was loaded (don't recreate bad stuff) 				break; 		}  		if (['recreate', 'createonly', 'nocreate'].indexOf(ctx.createOption) !== -1) { 			query[ctx.createOption] = ''; 		}  		if (canUseMwUserToken && ctx.followRedirect) { 			query.redirect = true; 		}  		ctx.saveApi = new Morebits.wiki.api(msg('saving-page', 'পাতা সংরক্ষণ করা হচ্ছে...'), query, fnSaveSuccess, ctx.statusElement, fnSaveError); 		ctx.saveApi.setParent(this); 		ctx.saveApi.post(); 	};  	/** 	 * Adds the text provided via `setAppendText()` to the end of the 	 * page.  Does not require calling `load()` first, unless a watchlist 	 * expiry is used. 	 * 	 * @param {Function} [onSuccess] - Callback function which is called when the method has succeeded. 	 * @param {Function} [onFailure] - Callback function which is called when the method fails. 	 */ 	this.append = function(onSuccess, onFailure) { 		ctx.editMode = 'append';  		if (fnCanUseMwUserToken('edit')) { 			this.save(onSuccess, onFailure); 		} else { 			ctx.onSaveSuccess = onSuccess; 			ctx.onSaveFailure = onFailure || emptyFunction; 			this.load(fnAutoSave, ctx.onSaveFailure); 		} 	};  	/** 	 * Adds the text provided via `setPrependText()` to the start of the 	 * page.  Does not require calling `load()` first, unless a watchlist 	 * expiry is used. 	 * 	 * @param {Function}  [onSuccess] - Callback function which is called when the method has succeeded. 	 * @param {Function}  [onFailure] - Callback function which is called when the method fails. 	 */ 	this.prepend = function(onSuccess, onFailure) { 		ctx.editMode = 'prepend';  		if (fnCanUseMwUserToken('edit')) { 			this.save(onSuccess, onFailure); 		} else { 			ctx.onSaveSuccess = onSuccess; 			ctx.onSaveFailure = onFailure || emptyFunction; 			this.load(fnAutoSave, ctx.onSaveFailure); 		} 	};  	/** 	 * Creates a new section with the text provided by `setNewSectionText()` 	 * and section title from `setNewSectionTitle()`. 	 * If `editSummary` is provided, that will be used instead of the 	 * autogenerated "->Title (new section" edit summary. 	 * Does not require calling `load()` first, unless a watchlist expiry 	 * is used. 	 * 	 * @param {Function}  [onSuccess] - Callback function which is called when the method has succeeded. 	 * @param {Function}  [onFailure] - Callback function which is called when the method fails. 	 */ 	this.newSection = function(onSuccess, onFailure) { 		ctx.editMode = 'new';  		if (fnCanUseMwUserToken('edit')) { 			this.save(onSuccess, onFailure); 		} else { 			ctx.onSaveSuccess = onSuccess; 			ctx.onSaveFailure = onFailure || emptyFunction; 			this.load(fnAutoSave, ctx.onSaveFailure); 		} 	};  	/** @returns {string} The name of the loaded page, including the namespace */ 	this.getPageName = function() { 		return ctx.pageName; 	};  	/** @returns {string} The text of the page after a successful load() */ 	this.getPageText = function() { 		return ctx.pageText; 	};  	/** @param {string} pageText - Updated page text that will be saved when `save()` is called */ 	this.setPageText = function(pageText) { 		ctx.editMode = 'all'; 		ctx.pageText = pageText; 	};  	/** @param {string} appendText - Text that will be appended to the page when `append()` is called */ 	this.setAppendText = function(appendText) { 		ctx.editMode = 'append'; 		ctx.appendText = appendText; 	};  	/** @param {string} prependText - Text that will be prepended to the page when `prepend()` is called */ 	this.setPrependText = function(prependText) { 		ctx.editMode = 'prepend'; 		ctx.prependText = prependText; 	};  	/** @param {string} newSectionText - Text that will be added in a new section on the page when `newSection()` is called */ 	this.setNewSectionText = function(newSectionText) { 		ctx.editMode = 'new'; 		ctx.newSectionText = newSectionText; 	};  	/** 	 * @param {string} newSectionTitle - Title for the new section created when `newSection()` is called 	 * If missing, `ctx.editSummary` will be used. Issues may occur if a substituted template is used. 	 */ 	this.setNewSectionTitle = function(newSectionTitle) { 		ctx.editMode = 'new'; 		ctx.newSectionTitle = newSectionTitle; 	};  	// Edit-related setter methods: 	/** 	 * Set the edit summary that will be used when `save()` is called. 	 * Unnecessary if editMode is 'new' and newSectionTitle is provided. 	 * 	 * @param {string} summary 	 */ 	this.setEditSummary = function(summary) { 		ctx.editSummary = summary; 	};  	/** 	 * Set any custom tag(s) to be applied to the API action. 	 * A number of actions don't support it, most notably watch, review, 	 * and stabilize ({@link https://phabricator.wikimedia.org/T247721|T247721}), and 	 * pagetriageaction ({@link https://phabricator.wikimedia.org/T252980|T252980}). 	 * 	 * @param {string|string[]} tags - String or array of tag(s). 	 */ 	this.setChangeTags = function(tags) { 		ctx.changeTags = tags; 	};  	/** 	 * @param {string} [createOption=null] - Can take the following four values: 	 * - recreate: create the page if it does not exist, or edit it if it exists. 	 * - createonly: create the page if it does not exist, but return an 	 * error if it already exists. 	 * - nocreate: don't create the page, only edit it if it already exists. 	 * - `null`: create the page if it does not exist, unless it was deleted 	 * in the moment between loading the page and saving the edit (default). 	 * 	 */ 	this.setCreateOption = function(createOption) { 		ctx.createOption = createOption; 	};  	/** @param {boolean} minorEdit - Set true to mark the edit as a minor edit. */ 	this.setMinorEdit = function(minorEdit) { 		ctx.minorEdit = minorEdit; 	};  	/** @param {boolean} botEdit - Set true to mark the edit as a bot edit */ 	this.setBotEdit = function(botEdit) { 		ctx.botEdit = botEdit; 	};  	/** 	 * @param {number} pageSection - Integer specifying the section number to load or save. 	 * If specified as `null`, the entire page will be retrieved. 	 */ 	this.setPageSection = function(pageSection) { 		ctx.pageSection = pageSection; 	};  	/** 	 * @param {number} maxConflictRetries - Number of retries for save errors involving an edit conflict or 	 * loss of token. Default: 2. 	 */ 	this.setMaxConflictRetries = function(maxConflictRetries) { 		ctx.maxConflictRetries = maxConflictRetries; 	};  	/** 	 * @param {number} maxRetries - Number of retries for save errors not involving an edit conflict or 	 * loss of token. Default: 2. 	 */ 	this.setMaxRetries = function(maxRetries) { 		ctx.maxRetries = maxRetries; 	};  	/** 	 * Set whether and how to watch the page, including setting an expiry. 	 * 	 * @param {boolean|string|Morebits.date|Date} [watchlistOption=false] - 	 * Basically a mix of MW API and Twinkley options available pre-expiry: 	 * - `true`|`'yes'`|`'watch'`: page will be added to the user's 	 * watchlist when the action is called. Defaults to an indefinite 	 * watch unless `watchlistExpiry` is provided. 	 * - `false`|`'no'`|`'nochange'`: watchlist status of the page (including expiry) will not be changed. 	 * - `'default'`|`'preferences'`: watchlist status of the page will be 	 * set based on the user's preference settings when the action is 	 * called. Defaults to an indefinite watch unless `watchlistExpiry` is 	 * provided. 	 * - `'unwatch'`: explicitly unwatch the page. 	 * - Any other `string` or `number`, or a `Morebits.date` or `Date` 	 * object: watch page until the specified time, deferring to 	 * `watchlistExpiry` if provided. 	 * @param {string|number|Morebits.date|Date} [watchlistExpiry=infinity] - 	 * A date-like string or number, or a date object.  If a string or number, 	 * can be relative (2 weeks) or other similarly date-like (i.e. NOT "potato"): 	 * ISO 8601: 2038-01-09T03:14:07Z 	 * MediaWiki: 20380109031407 	 * UNIX: 2147483647 	 * SQL: 2038-01-09 03:14:07 	 * Can also be `infinity` or infinity-like (`infinite`, `indefinite`, and `never`). 	 * See {@link https://phabricator.wikimedia.org/source/mediawiki-libs-Timestamp/browse/master/src/ConvertibleTimestamp.php;4e53b859a9580c55958078f46dd4f3a44d0fcaa0$57-109?as=source&blame=off} 	 */ 	this.setWatchlist = function(watchlistOption, watchlistExpiry) { 		if (watchlistOption instanceof Morebits.date || watchlistOption instanceof Date) { 			watchlistOption = watchlistOption.toISOString(); 		} 		if (typeof watchlistExpiry === 'undefined') { 			watchlistExpiry = 'infinity'; 		} else if (watchlistExpiry instanceof Morebits.date || watchlistExpiry instanceof Date) { 			watchlistExpiry = watchlistExpiry.toISOString(); 		}  		switch (watchlistOption) { 			case 'nochange': 			case 'no': 			case false: 			case undefined: 				ctx.watchlistOption = 'nochange'; 				// The MW API allows for changing expiry with nochange (as "nochange" refers to the binary status), 				// but by keeping this null it will default to any existing expiry, ensure there is actually "no change." 				ctx.watchlistExpiry = null; 				break; 			case 'unwatch': 				// expiry unimportant 				ctx.watchlistOption = 'unwatch'; 				break; 			case 'preferences': 			case 'default': 				ctx.watchlistOption = 'preferences'; 				// The API allows an expiry here, but there is as of yet (T265716) 				// no expiry preference option, so it's a bit devoid of context. 				ctx.watchlistExpiry = watchlistExpiry; 				break; 			case 'watch': 			case 'yes': 			case true: 				ctx.watchlistOption = 'watch'; 				ctx.watchlistExpiry = watchlistExpiry; 				break; 			default: // Not really a "default" per se but catches "any other string" 				ctx.watchlistOption = 'watch'; 				ctx.watchlistExpiry = watchlistOption; 				break; 		} 	};  	/** 	 * Set a watchlist expiry. setWatchlist can mostly handle this by 	 * itself, so this is here largely for completeness and compatibility 	 * with the full suite of options. 	 * 	 * @param {string|number|Morebits.date|Date} [watchlistExpiry=infinity] - 	 * A date-like string or number, or a date object.  If a string or number, 	 * can be relative (2 weeks) or other similarly date-like (i.e. NOT "potato"): 	 * ISO 8601: 2038-01-09T03:14:07Z 	 * MediaWiki: 20380109031407 	 * UNIX: 2147483647 	 * SQL: 2038-01-09 03:14:07 	 * Can also be `infinity` or infinity-like (`infinite`, `indefinite`, and `never`). 	 * See {@link https://phabricator.wikimedia.org/source/mediawiki-libs-Timestamp/browse/master/src/ConvertibleTimestamp.php;4e53b859a9580c55958078f46dd4f3a44d0fcaa0$57-109?as=source&blame=off} 	 */ 	this.setWatchlistExpiry = function(watchlistExpiry) { 		if (typeof watchlistExpiry === 'undefined') { 			watchlistExpiry = 'infinity'; 		} else if (watchlistExpiry instanceof Morebits.date || watchlistExpiry instanceof Date) { 			watchlistExpiry = watchlistExpiry.toISOString(); 		} 		ctx.watchlistExpiry = watchlistExpiry; 	};  	/** 	 * @deprecated As of December 2020, use setWatchlist. 	 * @param {boolean} [watchlistOption=false] - 	 * - `True`: page watchlist status will be set based on the user's 	 * preference settings when `save()` is called. 	 * - `False`: watchlist status of the page will not be changed. 	 * 	 * Watchlist notes: 	 * 1. The MediaWiki API value of 'unwatch', which explicitly removes 	 * the page from the user's watchlist, is not used. 	 * 2. If both `setWatchlist()` and `setWatchlistFromPreferences()` are 	 * called, the last call takes priority. 	 * 3. Twinkle modules should use the appropriate preference to set the watchlist options. 	 * 4. Most Twinkle modules use `setWatchlist()`. `setWatchlistFromPreferences()` 	 * is only needed for the few Twinkle watchlist preferences that 	 * accept a string value of `default`. 	 */ 	this.setWatchlistFromPreferences = function(watchlistOption) { 		console.warn('NOTE: Morebits.wiki.page.setWatchlistFromPreferences was deprecated December 2020, please use setWatchlist'); // eslint-disable-line no-console 		if (watchlistOption) { 			ctx.watchlistOption = 'preferences'; 		} else { 			ctx.watchlistOption = 'nochange'; 		} 	};  	/** 	 * @param {boolean} [followRedirect=false] - 	 * - `true`: a maximum of one redirect will be followed. In the event 	 * of a redirect, a message is displayed to the user and the redirect 	 * target can be retrieved with getPageName(). 	 * - `false`: (default) the requested pageName will be used without regard to any redirect. 	 * @param {boolean} [followCrossNsRedirect=true] - Not applicable if `followRedirect` is not set true. 	 * - `true`: (default) follow redirect even if it is a cross-namespace redirect 	 * - `false`: don't follow redirect if it is cross-namespace, edit the redirect itself. 	 */ 	this.setFollowRedirect = function(followRedirect, followCrossNsRedirect) { 		if (ctx.pageLoaded) { 			ctx.statusElement.error('Internal error: cannot change redirect setting after the page has been loaded!'); 			return; 		} 		ctx.followRedirect = followRedirect; 		ctx.followCrossNsRedirect = typeof followCrossNsRedirect !== 'undefined' ? followCrossNsRedirect : ctx.followCrossNsRedirect; 	};  	// lookup-creation setter function 	/** 	 * @param {boolean} flag - If set true, the author and timestamp of 	 * the first non-redirect version of the page is retrieved. 	 * 	 * Warning: 	 * 1. If there are no revisions among the first 50 that are 	 * non-redirects, or if there are less 50 revisions and all are 	 * redirects, the original creation is retrieved. 	 * 2. Revisions that the user is not privileged to access 	 * (revdeled/suppressed) will be treated as non-redirects. 	 * 3. Must not be used when the page has a non-wikitext contentmodel 	 * such as Modulespace Lua or user JavaScript/CSS. 	 */ 	this.setLookupNonRedirectCreator = function(flag) { 		ctx.lookupNonRedirectCreator = flag; 	};  	// Move-related setter functions 	/** @param {string} destination */ 	this.setMoveDestination = function(destination) { 		ctx.moveDestination = destination; 	};  	/** @param {boolean} flag */ 	this.setMoveTalkPage = function(flag) { 		ctx.moveTalkPage = !!flag; 	};  	/** @param {boolean} flag */ 	this.setMoveSubpages = function(flag) { 		ctx.moveSubpages = !!flag; 	};  	/** @param {boolean} flag */ 	this.setMoveSuppressRedirect = function(flag) { 		ctx.moveSuppressRedirect = !!flag; 	};  	// Protect-related setter functions 	/** 	 * @param {string} level - The right required for the specific action 	 * e.g. autoconfirmed, sysop, templateeditor, extendedconfirmed 	 * (enWiki-only). 	 * @param {string} [expiry=infinity] 	 */ 	this.setEditProtection = function(level, expiry) { 		ctx.protectEdit = { level: level, expiry: expiry || 'infinity' }; 	};  	this.setMoveProtection = function(level, expiry) { 		ctx.protectMove = { level: level, expiry: expiry || 'infinity' }; 	};  	this.setCreateProtection = function(level, expiry) { 		ctx.protectCreate = { level: level, expiry: expiry || 'infinity' }; 	};  	this.setCascadingProtection = function(flag) { 		ctx.protectCascade = !!flag; 	};  	this.suppressProtectWarning = function() { 		ctx.suppressProtectWarning = true; 	};  	// Revert-related getters/setters: 	this.setOldID = function(oldID) { 		ctx.revertOldID = oldID; 	};  	/** @returns {string} The current revision ID of the page */ 	this.getCurrentID = function() { 		return ctx.revertCurID; 	};  	/** @returns {string} Last editor of the page */ 	this.getRevisionUser = function() { 		return ctx.revertUser; 	};  	/** @returns {string} ISO 8601 timestamp at which the page was last edited. */ 	this.getLastEditTime = function() { 		return ctx.lastEditTime; 	};  	// Miscellaneous getters/setters:  	/** 	 * Define an object for use in a callback function. 	 * 	 * `callbackParameters` is for use by the caller only. The parameters 	 * allow a caller to pass the proper context into its callback 	 * function.  Callers must ensure that any changes to the 	 * callbackParameters object within a `load()` callback still permit a 	 * proper re-entry into the `load()` callback if an edit conflict is 	 * detected upon calling `save()`. 	 * 	 * @param {object} callbackParameters 	 */ 	this.setCallbackParameters = function(callbackParameters) { 		ctx.callbackParameters = callbackParameters; 	};  	/** 	 * @returns {object} - The object previously set by `setCallbackParameters()`. 	 */ 	this.getCallbackParameters = function() { 		return ctx.callbackParameters; 	};  	/** 	 * @param {Morebits.status} statusElement 	 */ 	this.setStatusElement = function(statusElement) { 		ctx.statusElement = statusElement; 	};  	/** 	 * @returns {Morebits.status} Status element created by the constructor. 	 */ 	this.getStatusElement = function() { 		return ctx.statusElement; 	};  	/** 	 * @param {string} level - The right required for edits not to require 	 * review. Possible options: none, autoconfirmed, review (not on enWiki). 	 * @param {string} [expiry=infinity] 	 */ 	this.setFlaggedRevs = function(level, expiry) { 		ctx.flaggedRevs = { level: level, expiry: expiry || 'infinity' }; 	};  	/** 	 * @returns {boolean} True if the page existed on the wiki when it was last loaded. 	 */ 	this.exists = function() { 		return ctx.pageExists; 	};  	/** 	 * @returns {string} Page ID of the page loaded. 0 if the page doesn't 	 * exist. 	 */ 	this.getPageID = function() { 		return ctx.pageID; 	};  	/** 	 * @returns {string} - Content model of the page.  Possible values 	 * include (but may not be limited to): `wikitext`, `javascript`, 	 * `css`, `json`, `Scribunto`, `sanitized-css`, `MassMessageListContent`. 	 * Also gettable via `mw.config.get('wgPageContentModel')`. 	 */ 	this.getContentModel = function() { 		return ctx.contentModel; 	};  	/** 	 * @returns {boolean|string} - Watched status of the page. Boolean 	 * unless it's being watched temporarily, in which case returns the 	 * expiry string. 	 */ 	this.getWatched = function () { 		return ctx.watched; 	};  	/** 	 * @returns {string} ISO 8601 timestamp at which the page was last loaded. 	 */ 	this.getLoadTime = function() { 		return ctx.loadTime; 	};  	/** 	 * @returns {string} The user who created the page following `lookupCreation()`. 	 */ 	this.getCreator = function() { 		return ctx.creator; 	};  	/** 	 * @returns {string} The ISOString timestamp of page creation following `lookupCreation()`. 	 */ 	this.getCreationTimestamp = function() { 		return ctx.timestamp; 	};  	/** @returns {boolean} whether or not you can edit the page */ 	this.canEdit = function() { 		return !!ctx.testActions && ctx.testActions.indexOf('edit') !== -1; 	};  	/** 	 * Retrieves the username of the user who created the page as well as 	 * the timestamp of creation.  The username can be retrieved using the 	 * `getCreator()` function; the timestamp can be retrieved using the 	 * `getCreationTimestamp()` function. 	 * Prior to June 2019 known as `lookupCreator()`. 	 * 	 * @param {Function} onSuccess - Callback function to be called when 	 * the username and timestamp are found within the callback. 	 * @param {Function} [onFailure] - Callback function to be called when 	 * the lookup fails 	 */ 	this.lookupCreation = function(onSuccess, onFailure) { 		ctx.onLookupCreationSuccess = onSuccess; 		ctx.onLookupCreationFailure = onFailure || emptyFunction; 		if (!onSuccess) { 			ctx.statusElement.error('Internal error: no onSuccess callback provided to lookupCreation()!'); 			ctx.onLookupCreationFailure(this); 			return; 		}  		var query = { 			action: 'query', 			prop: 'revisions', 			titles: ctx.pageName, 			rvlimit: 1, 			rvprop: 'user|timestamp', 			rvdir: 'newer', 			format: 'json' 		};  		// Only the wikitext content model can reliably handle 		// rvsection, others return an error when paired with the 		// content rvprop. Relatedly, non-wikitext models don't 		// understand the #REDIRECT concept, so we shouldn't attempt 		// the redirect resolution in fnLookupCreationSuccess 		if (ctx.lookupNonRedirectCreator) { 			query.rvsection = 0; 			query.rvprop += '|content'; 		}  		if (ctx.followRedirect) { 			query.redirects = '';  // follow all redirects 		}  		ctx.lookupCreationApi = new Morebits.wiki.api(msg('getting-creator', 'পাতা সৃষ্টির তথ্য সংগ্রহ করা হচ্ছে'), query, fnLookupCreationSuccess, ctx.statusElement, ctx.onLookupCreationFailure); 		ctx.lookupCreationApi.setParent(this); 		ctx.lookupCreationApi.post(); 	};  	/** 	 * Reverts a page to `revertOldID` set by `setOldID`. 	 * 	 * @param {Function} [onSuccess] - Callback function to run on success. 	 * @param {Function} [onFailure] - Callback function to run on failure. 	 */ 	this.revert = function(onSuccess, onFailure) { 		ctx.onSaveSuccess = onSuccess; 		ctx.onSaveFailure = onFailure || emptyFunction;  		if (!ctx.revertOldID) { 			ctx.statusElement.error('Internal error: revision ID to revert to was not set before revert!'); 			ctx.onSaveFailure(this); 			return; 		}  		ctx.editMode = 'revert'; 		this.load(fnAutoSave, ctx.onSaveFailure); 	};  	/** 	 * Moves a page to another title. 	 * 	 * @param {Function} [onSuccess] - Callback function to run on success. 	 * @param {Function} [onFailure] - Callback function to run on failure. 	 */ 	this.move = function(onSuccess, onFailure) { 		ctx.onMoveSuccess = onSuccess; 		ctx.onMoveFailure = onFailure || emptyFunction;  		if (!fnPreflightChecks.call(this, 'move', ctx.onMoveFailure)) { 			return; // abort 		}  		if (!ctx.moveDestination) { 			ctx.statusElement.error('Internal error: destination page name was not set before move!'); 			ctx.onMoveFailure(this); 			return; 		}  		if (fnCanUseMwUserToken('move')) { 			fnProcessMove.call(this, this); 		} else { 			var query = fnNeedTokenInfoQuery('move');  			ctx.moveApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), query, fnProcessMove, ctx.statusElement, ctx.onMoveFailure); 			ctx.moveApi.setParent(this); 			ctx.moveApi.post(); 		} 	};  	/** 	 * Marks the page as patrolled, using `rcid` (if available) or `revid`. 	 * 	 * Patrolling as such doesn't need to rely on loading the page in 	 * question; simply passing a revid to the API is sufficient, so in 	 * those cases just using {@link Morebits.wiki.api} is probably preferable. 	 * 	 * No error handling since we don't actually care about the errors. 	 */ 	this.patrol = function() { 		if (!Morebits.userIsSysop && !Morebits.userIsInGroup('patroller')) { 			return; 		}  		// If a link is present, don't need to check if it's patrolled 		if ($('.patrollink').length) { 			var patrolhref = $('.patrollink a').attr('href'); 			ctx.rcid = mw.util.getParamValue('rcid', patrolhref); 			fnProcessPatrol(this, this); 		} else { 			var patrolQuery = { 				action: 'query', 				prop: 'info', 				meta: 'tokens', 				type: 'patrol', // as long as we're querying, might as well get a token 				list: 'recentchanges', // check if the page is unpatrolled 				titles: ctx.pageName, 				rcprop: 'patrolled', 				rctitle: ctx.pageName, 				rclimit: 1, 				format: 'json' 			};  			ctx.patrolApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), patrolQuery, fnProcessPatrol); 			ctx.patrolApi.setParent(this); 			ctx.patrolApi.post(); 		} 	};  	this.triage = function() {     this.patrol();     };  	// |delete| is a reserved word in some flavours of JS 	/** 	 * Deletes a page (for admins only). 	 * 	 * @param {Function} [onSuccess] - Callback function to run on success. 	 * @param {Function} [onFailure] - Callback function to run on failure. 	 */ 	this.deletePage = function(onSuccess, onFailure) { 		ctx.onDeleteSuccess = onSuccess; 		ctx.onDeleteFailure = onFailure || emptyFunction;  		if (!fnPreflightChecks.call(this, 'delete', ctx.onDeleteFailure)) { 			return; // abort 		}  		if (fnCanUseMwUserToken('delete')) { 			fnProcessDelete.call(this, this); 		} else { 			var query = fnNeedTokenInfoQuery('delete');  			ctx.deleteApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), query, fnProcessDelete, ctx.statusElement, ctx.onDeleteFailure); 			ctx.deleteApi.setParent(this); 			ctx.deleteApi.post(); 		} 	};  	/** 	 * Undeletes a page (for admins only). 	 * 	 * @param {Function} [onSuccess] - Callback function to run on success. 	 * @param {Function} [onFailure] - Callback function to run on failure. 	 */ 	this.undeletePage = function(onSuccess, onFailure) { 		ctx.onUndeleteSuccess = onSuccess; 		ctx.onUndeleteFailure = onFailure || emptyFunction;  		if (!fnPreflightChecks.call(this, 'undelete', ctx.onUndeleteFailure)) { 			return; // abort 		}  		if (fnCanUseMwUserToken('undelete')) { 			fnProcessUndelete.call(this, this); 		} else { 			var query = fnNeedTokenInfoQuery('undelete');  			ctx.undeleteApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), query, fnProcessUndelete, ctx.statusElement, ctx.onUndeleteFailure); 			ctx.undeleteApi.setParent(this); 			ctx.undeleteApi.post(); 		} 	};  	/** 	 * Protects a page (for admins only). 	 * 	 * @param {Function} [onSuccess] - Callback function to run on success. 	 * @param {Function} [onFailure] - Callback function to run on failure. 	 */ 	this.protect = function(onSuccess, onFailure) { 		ctx.onProtectSuccess = onSuccess; 		ctx.onProtectFailure = onFailure || emptyFunction;  		if (!fnPreflightChecks.call(this, 'protect', ctx.onProtectFailure)) { 			return; // abort 		}  		if (!ctx.protectEdit && !ctx.protectMove && !ctx.protectCreate) { 			ctx.statusElement.error('Internal error: you must set edit and/or move and/or create protection before calling protect()!'); 			ctx.onProtectFailure(this); 			return; 		}  		// because of the way MW API interprets protection levels 		// (absolute, not differential), we always need to request 		// protection levels from the server 		var query = fnNeedTokenInfoQuery('protect');  		ctx.protectApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), query, fnProcessProtect, ctx.statusElement, ctx.onProtectFailure); 		ctx.protectApi.setParent(this); 		ctx.protectApi.post(); 	};  	/** 	 * Apply FlaggedRevs protection settings.  Only works on wikis where 	 * the extension is installed (`$wgFlaggedRevsProtection = true` 	 * i.e. where FlaggedRevs settings appear on the "protect" tab). 	 * 	 * @see {@link https://www.mediawiki.org/wiki/Extension:FlaggedRevs} 	 * Referred to as "pending changes" on-wiki. 	 * 	 * @param {Function} [onSuccess] 	 * @param {Function} [onFailure] 	 */ 	this.stabilize = function(onSuccess, onFailure) { 		ctx.onStabilizeSuccess = onSuccess; 		ctx.onStabilizeFailure = onFailure || emptyFunction;  		if (!fnPreflightChecks.call(this, 'FlaggedRevs', ctx.onStabilizeFailure)) { 			return; // abort 		}  		if (!ctx.flaggedRevs) { 			ctx.statusElement.error('Internal error: you must set flaggedRevs before calling stabilize()!'); 			ctx.onStabilizeFailure(this); 			return; 		}  		if (fnCanUseMwUserToken('stabilize')) { 			fnProcessStabilize.call(this, this); 		} else { 			var query = fnNeedTokenInfoQuery('stabilize');  			ctx.stabilizeApi = new Morebits.wiki.api(msg('getting-token', 'টোকেন সংগ্রহ করা হচ্ছে...'), query, fnProcessStabilize, ctx.statusElement, ctx.onStabilizeFailure); 			ctx.stabilizeApi.setParent(this); 			ctx.stabilizeApi.post(); 		} 	};  	/* 	 * Private member functions 	 * These are not exposed outside 	 */  	/** 	 * Determines whether we can save an API call by using the csrf token 	 * sent with the page HTML, or whether we need to ask the server for 	 * more info (e.g. protection or watchlist expiry). 	 * 	 * Currently used for `append`, `prepend`, `newSection`, `move`, 	 * `stabilize`, `deletePage`, and `undeletePage`. Not used for 	 * `protect` since it always needs to request protection status. 	 * 	 * @param {string} [action=edit] - The action being undertaken, e.g. 	 * "edit" or "delete". In practice, only "edit" or "notedit" matters. 	 * @returns {boolean} 	 */ 	var fnCanUseMwUserToken = function(action) { 		action = typeof action !== 'undefined' ? action : 'edit'; // IE doesn't support default parameters  		// If a watchlist expiry is set, we must always load the page 		// to avoid overwriting indefinite protection.  Of course, not 		// needed if setting indefinite watching! 		if (ctx.watchlistExpiry && !Morebits.string.isInfinity(ctx.watchlistExpiry)) { 			return false; 		}  		// API-based redirect resolution only works for action=query and 		// action=edit in append/prepend/new modes 		if (ctx.followRedirect) { 			if (!ctx.followCrossNsRedirect) { 				return false; // must load the page to check for cross namespace redirects 			} 			if (action !== 'edit' || (ctx.editMode === 'all' || ctx.editMode === 'revert')) { 				return false; 			} 		}  		// do we need to fetch the edit protection expiry? 		if (Morebits.userIsSysop && !ctx.suppressProtectWarning) { 			if (new mw.Title(Morebits.pageNameNorm).getPrefixedText() !== new mw.Title(ctx.pageName).getPrefixedText()) { 				return false; 			}  			// wgRestrictionEdit is null on non-existent pages, 			// so this neatly handles nonexistent pages 			var editRestriction = mw.config.get('wgRestrictionEdit'); 			if (!editRestriction || editRestriction.indexOf('sysop') !== -1) { 				return false; 			} 		}  		return !!mw.user.tokens.get('csrfToken'); 	};  	/** 	 * When functions can't use 	 * {@link Morebits.wiki.page~fnCanUseMwUserToken|fnCanUseMwUserToken} 	 * or require checking protection or watched status, maintain the query 	 * in one place. Used for {@link Morebits.wiki.page#deletePage|delete}, 	 * {@link Morebits.wiki.page#undeletePage|undelete}, 	 * {@link* Morebits.wiki.page#protect|protect}, 	 * {@link Morebits.wiki.page#stabilize|stabilize}, 	 * and {@link Morebits.wiki.page#move|move} 	 * (basically, just not {@link Morebits.wiki.page#load|load}). 	 * 	 * @param {string} action - The action being undertaken, e.g. "edit" or 	 * "delete". 	 * @returns {object} Appropriate query. 	 */ 	var fnNeedTokenInfoQuery = function(action) { 		var query = { 			action: 'query', 			meta: 'tokens', 			type: 'csrf', 			titles: ctx.pageName, 			prop: 'info', 			inprop: 'watched', 			format: 'json' 		}; 		// Protection not checked for flagged-revs or non-sysop moves 		if (action !== 'stabilize' && (action !== 'move' || Morebits.userIsSysop)) { 			query.inprop += '|protection'; 		} 		if (ctx.followRedirect && action !== 'undelete') { 			query.redirects = ''; // follow all redirects 		} 		return query; 	};  	// callback from loadSuccess() for append(), prepend(), and newSection() threads 	var fnAutoSave = function(pageobj) { 		pageobj.save(ctx.onSaveSuccess, ctx.onSaveFailure); 	};  	// callback from loadApi.post() 	var fnLoadSuccess = function() { 		var response = ctx.loadApi.getResponse().query;  		if (!fnCheckPageName(response, ctx.onLoadFailure)) { 			return; // abort 		}  		var page = response.pages[0], rev; 		ctx.pageExists = !page.missing; 		if (ctx.pageExists) { 			rev = page.revisions[0]; 			ctx.lastEditTime = rev.timestamp; 			ctx.pageText = rev.content; 			ctx.pageID = page.pageid; 		} else { 			ctx.pageText = '';  // allow for concatenation, etc. 			ctx.pageID = 0; // nonexistent in response, matches wgArticleId 		} 		ctx.csrfToken = response.tokens.csrftoken; 		if (!ctx.csrfToken) { 			ctx.statusElement.error(msg('token-fetch-fail', 'Failed to retrieve edit token.')); 			ctx.onLoadFailure(this); 			return; 		} 		ctx.loadTime = ctx.loadApi.getResponse().curtimestamp; 		if (!ctx.loadTime) { 			ctx.statusElement.error('Failed to retrieve current timestamp.'); 			ctx.onLoadFailure(this); 			return; 		}  		ctx.contentModel = page.contentmodel; 		ctx.watched = page.watchlistexpiry || page.watched;  		// extract protection info, to alert admins when they are about to edit a protected page 		// Includes cascading protection 		if (Morebits.userIsSysop) { 			var editProt = page.protection.filter(function(pr) { 				return pr.type === 'edit' && pr.level === 'sysop'; 			}).pop(); 			if (editProt) { 				ctx.fullyProtected = editProt.expiry; 			} else { 				ctx.fullyProtected = false; 			} 		}  		ctx.revertCurID = page.lastrevid;  		var testactions = page.actions; 		ctx.testActions = []; // was null 		Object.keys(testactions).forEach(function(action) { 			if (testactions[action]) { 				ctx.testActions.push(action); 			} 		});  		if (ctx.editMode === 'revert') { 			ctx.revertCurID = rev && rev.revid; 			if (!ctx.revertCurID) { 				ctx.statusElement.error('Failed to retrieve current revision ID.'); 				ctx.onLoadFailure(this); 				return; 			} 			ctx.revertUser = rev && rev.user; 			if (!ctx.revertUser) { 				if (rev && rev.userhidden) {  // username was RevDel'd or oversighted 					ctx.revertUser = '<username hidden>'; 				} else { 					ctx.statusElement.error('Failed to retrieve user who made the revision.'); 					ctx.onLoadFailure(this); 					return; 				} 			} 			// set revert edit summary 			ctx.editSummary = '[[Help:Revert|Reverted]] to revision ' + ctx.revertOldID + ' by ' + ctx.revertUser + ': ' + ctx.editSummary; 		}  		ctx.pageLoaded = true;  		// alert("Generate edit conflict now");  // for testing edit conflict recovery logic 		ctx.onLoadSuccess(this);  // invoke callback 	};  	// helper function to parse the page name returned from the API 	var fnCheckPageName = function(response, onFailure) { 		if (!onFailure) { 			onFailure = emptyFunction; 		}  		var page = response.pages && response.pages[0]; 		if (page) { 			// check for invalid titles 			if (page.invalid) { 				ctx.statusElement.error(msg('invalid-title', ctx.pageName, 'The page title is invalid: ' + ctx.pageName)); 				onFailure(this); 				return false; // abort 			}  			// retrieve actual title of the page after normalization and redirects 			var resolvedName = page.title;  			if (response.redirects) { 				// check for cross-namespace redirect: 				var origNs = new mw.Title(ctx.pageName).namespace; 				var newNs = new mw.Title(resolvedName).namespace; 				if (origNs !== newNs && !ctx.followCrossNsRedirect) { 					ctx.statusElement.error(msg('cross-redirect-abort', ctx.pageName, resolvedName, ctx.pageName + ' is a cross-namespace redirect to ' + resolvedName + ', aborted')); 					onFailure(this); 					return false; 				}  				// only notify user for redirects, not normalization 				new Morebits.status('Note', msg('redirected', ctx.pageName, resolvedName, ctx.pageName + ' থেকে ' + resolvedName + '-এ পুনর্নির্দেশিত হয়েছে')); 			}  			ctx.pageName = resolvedName; // update to redirect target or normalized name  		} else { 			// could be a circular redirect or other problem 			ctx.statusElement.error(msg('redirect-resolution-fail', ctx.pageName, 'এর জন্য পুনঃনির্দেশগুলি সমাধান করা যায়নি: ' + ctx.pageName)); 			onFailure(this);  			// force error to stay on the screen 			++Morebits.wiki.numberOfActionsLeft; 			return false; // abort 		} 		return true; // all OK 	};  	/** 	 * Determine whether we should provide a watchlist expiry.  Will not 	 * do so if the page is currently permanently watched, or the current 	 * expiry is *after* the new, provided expiry.  Only handles strings 	 * recognized by {@link Morebits.date} or relative timeframes with 	 * unit it can process.  Relies on the fact that fnCanUseMwUserToken 	 * requires page loading if a watchlistexpiry is provided, so we are 	 * ensured of knowing the watch status by the use of this. 	 * 	 * @returns {boolean} 	 */ 	var fnApplyWatchlistExpiry = function() { 		if (ctx.watchlistExpiry) { 			if (!ctx.watched || Morebits.string.isInfinity(ctx.watchlistExpiry)) { 				return true; 			} else if (typeof ctx.watched === 'string') { 				var newExpiry; 				// Attempt to determine if the new expiry is a 				// relative (e.g. `1 month`) or absolute datetime 				var rel = ctx.watchlistExpiry.split(' '); 				try { 					newExpiry = new Morebits.date().add(rel[0], rel[1]); 				} catch (e) { 					newExpiry = new Morebits.date(ctx.watchlistExpiry); 				}  				// If the date is valid, only use it if it extends the current expiry 				if (newExpiry.isValid()) { 					if (newExpiry.isAfter(new Morebits.date(ctx.watched))) { 						return true; 					} 				} else { 					// If it's still not valid, hope it's a valid MW expiry format that 					// Morebits.date doesn't recognize, so just default to using it. 					// This will also include minor typos. 					return true; 				} 			} 		} 		return false; 	};  	// callback from saveApi.post() 	var fnSaveSuccess = function() { 		ctx.editMode = 'all';  // cancel append/prepend/newSection/revert modes 		var response = ctx.saveApi.getResponse();  		// see if the API thinks we were successful 		if (response.edit.result === 'Success') {  			// real success 			// default on success action - display link for edited page 			var link = document.createElement('a'); 			link.setAttribute('href', mw.util.getUrl(ctx.pageName)); 			link.appendChild(document.createTextNode(ctx.pageName)); 			ctx.statusElement.info(['সম্পন্ন (', link, ')']); 			if (ctx.onSaveSuccess) { 				ctx.onSaveSuccess(this);  // invoke callback 			} 			return; 		}  		// errors here are only generated by extensions which hook APIEditBeforeSave within MediaWiki, 		// which as of 1.34.0-wmf.23 (Sept 2019) should only encompass captcha messages 		if (response.edit.captcha) { 			ctx.statusElement.error('পাতাটি সংরক্ষণ করা যায়নি কারণ উইকির সার্ভার চাচ্ছে যে আপনি একটি ক্যাপচা পূরণ করুন।'); 		} else { 			ctx.statusElement.error(msg('api-error-unknown', 'পাতা সংরক্ষণ করার সময় এপিআই থেকে অজানা ত্রুটি এসেছে')); 		}  		// force error to stay on the screen 		++Morebits.wiki.numberOfActionsLeft;  		ctx.onSaveFailure(this); 	};  	// callback from saveApi.post() 	var fnSaveError = function() { 		var errorCode = ctx.saveApi.getErrorCode();  		// check for edit conflict 		if (errorCode === 'editconflict' && ctx.conflictRetries++ < ctx.maxConflictRetries) {  			// edit conflicts can occur when the page needs to be purged from the server cache 			var purgeQuery = { 				action: 'purge', 				titles: ctx.pageName  // redirects are already resolved 			};  			var purgeApi = new Morebits.wiki.api(msg('editconflict-purging', 'সম্পাদনা দ্বন্দ্ব শনাক্ত হয়েছে, সার্ভার ক্যাশ শোধন করা হচ্ছে'), purgeQuery, function() { 				--Morebits.wiki.numberOfActionsLeft;  // allow for normal completion if retry succeeds  				ctx.statusElement.info(msg('editconflict-retrying', 'সম্পাদনা দ্বন্দ্ব শনাক্ত হয়েছে, সম্পাদনা পুনঃপ্রয়োগ করা হচ্ছে')); 				if (fnCanUseMwUserToken('edit')) { 					ctx.saveApi.post(); // necessarily append, prepend, or newSection, so this should work as desired 				} else { 					ctx.loadApi.post(); // reload the page and reapply the edit 				} 			}, ctx.statusElement); 			purgeApi.post();  		// check for network or server error 		} else if ((errorCode === null || errorCode === undefined) && ctx.retries++ < ctx.maxRetries) {  			// the error might be transient, so try again 			ctx.statusElement.info(msg('save-failed-retrying', 2, 'সংরক্ষণ ব্যর্থ হয়েছে, ২ সেকেন্ডের মধ্যে পুনরায় চেষ্টা করা হচ্ছে ...')); 			--Morebits.wiki.numberOfActionsLeft;  // allow for normal completion if retry succeeds  			// wait for sometime for client to regain connectivity 			sleep(2000).then(function() { 				ctx.saveApi.post(); // give it another go! 			});  		// hard error, give up 		} else {  			switch (errorCode) {  				case 'protectedpage': 					// non-admin attempting to edit a protected page - this gives a friendlier message than the default 					ctx.statusElement.error('সম্পাদনা সংরক্ষণ ব্যর্থ হয়েছে: পাতাটি সুরক্ষিত'); 					break;  				case 'abusefilter-disallowed': 					ctx.statusElement.error('সম্পাদনা ছাঁকনি এই সম্পাদনাটি করতে দেয়নি: "' + ctx.saveApi.getResponse().error.abusefilter.description + '"।'); 					break;  				case 'abusefilter-warning': 					ctx.statusElement.error([ 'A warning was returned by the edit filter: "', ctx.saveApi.getResponse().error.abusefilter.description, '". If you wish to proceed with the edit, please carry it out again. This warning will not appear a second time.' ]); 					// We should provide the user with a way to automatically retry the action if they so choose - 					// I can't see how to do this without creating a UI dependency on Morebits.wiki.page though -- TTO 					break;  				case 'spamblacklist': 					// If multiple items are blacklisted, we only return the first 					var spam = ctx.saveApi.getResponse().error.spamblacklist.matches[0]; 					ctx.statusElement.error('Could not save the page because the URL ' + spam + ' is on the spam blacklist'); 					break;  				default: 					ctx.statusElement.error('সম্পাদনা সংরক্ষণ ব্যর্থ হয়েছে: ' + ctx.saveApi.getErrorText()); 			}  			ctx.editMode = 'all';  // cancel append/prepend/newSection/revert modes 			if (ctx.onSaveFailure) { 				ctx.onSaveFailure(this);  // invoke callback 			} 		} 	};  	var isTextRedirect = function(text) { 		if (!text) { // no text - content empty or inaccessible (revdelled or suppressed) 			return false; 		} 		return Morebits.l10n.redirectTagAliases.some(function(tag) { 			return new RegExp('^\\s*' + tag + '\\W', 'i').test(text); 		}); 	};  	var fnLookupCreationSuccess = function() { 		var response = ctx.lookupCreationApi.getResponse().query;  		if (!fnCheckPageName(response, ctx.onLookupCreationFailure)) { 			return; // abort 		}  		var rev = response.pages[0].revisions && response.pages[0].revisions[0]; 		if (!rev) { 			ctx.statusElement.error(ctx.pageName + '-এর কোনও সংস্করণ খুঁজে পাওয়া যায়নি'); 			ctx.onLookupCreationFailure(this); 			return; 		}  		if (!ctx.lookupNonRedirectCreator || !isTextRedirect(rev.content)) {  			ctx.creator = rev.user; 			if (!ctx.creator) { 				ctx.statusElement.error('পাতা সৃষ্টিকারীর নাম খুঁজে পাওয়া যায়নি'); 				ctx.onLookupCreationFailure(this); 				return; 			} 			ctx.timestamp = rev.timestamp; 			if (!ctx.timestamp) { 				ctx.statusElement.error('পাতা তৈরির সময় তারিখ খুঁজে পাওয়া যায়নি'); 				ctx.onLookupCreationFailure(this); 				return; 			}  			ctx.statusElement.info('পাতা সৃষ্টির তথ্য সংগ্রহ করা হচ্ছে'); 			ctx.onLookupCreationSuccess(this);  		} else { 			ctx.lookupCreationApi.query.rvlimit = 50; // modify previous query to fetch more revisions 			ctx.lookupCreationApi.query.titles = ctx.pageName; // update pageName if redirect resolution took place in earlier query  			ctx.lookupCreationApi = new Morebits.wiki.api('পাতা সৃষ্টির তথ্য সংগ্রহ করা হচ্ছে', ctx.lookupCreationApi.query, fnLookupNonRedirectCreator, ctx.statusElement, ctx.onLookupCreationFailure); 			ctx.lookupCreationApi.setParent(this); 			ctx.lookupCreationApi.post(); 		}  	};  	var fnLookupNonRedirectCreator = function() { 		var response = ctx.lookupCreationApi.getResponse().query; 		var revs = response.pages[0].revisions;  		for (var i = 0; i < revs.length; i++) {  			if (!isTextRedirect(revs[i].content)) { 				ctx.creator = revs[i].user; 				ctx.timestamp = revs[i].timestamp; 				break; 			} 		}  		if (!ctx.creator) { 			// fallback to give first revision author if no non-redirect version in the first 50 			ctx.creator = revs[0].user; 			ctx.timestamp = revs[0].timestamp; 			if (!ctx.creator) { 				ctx.statusElement.error('পাতা সৃষ্টিকারীর নাম খুঁজে পাওয়া যায়নি'); 				ctx.onLookupCreationFailure(this); 				return; 			}  		} 		if (!ctx.timestamp) { 			ctx.statusElement.error('পাতা তৈরির সময় তারিখ খুঁজে পাওয়া যায়নি'); 			ctx.onLookupCreationFailure(this); 			return; 		}  		ctx.statusElement.info('পাতা সৃষ্টির তথ্য সংগ্রহ করা হচ্ছে'); 		ctx.onLookupCreationSuccess(this);  	};  	/** 	 * Common checks for action methods. Used for move, undelete, delete, 	 * protect, stabilize. 	 * 	 * @param {string} action - The action being checked. 	 * @param {string} onFailure - Failure callback. 	 * @returns {boolean} 	 */ 	var fnPreflightChecks = function(action, onFailure) { 		// if a non-admin tries to do this, don't bother 		if (!Morebits.userIsSysop && action !== 'move') { 			ctx.statusElement.error('পাতা ' + action + ' করা যায়নি : শুধুমাত্র প্রশাসক তা করতে পারবে'); 			onFailure(this); 			return false; 		}  		if (!ctx.editSummary) { 			ctx.statusElement.error('Internal error: ' + action + ' reason not set (use setEditSummary function)!'); 			onFailure(this); 			return false; 		} 		return true; // all OK 	};  	/** 	 * Common checks for fnProcess functions (`fnProcessDelete`, `fnProcessMove`, etc. 	 * Used for move, undelete, delete, protect, stabilize. 	 * 	 * @param {string} action - The action being checked. 	 * @param {string} onFailure - Failure callback. 	 * @param {string} response - The response document from the API call. 	 * @returns {boolean} 	 */ 	var fnProcessChecks = function(action, onFailure, response) { 		var missing = response.pages[0].missing;  		// No undelete as an existing page could have deleted revisions 		var actionMissing = missing && ['delete', 'stabilize', 'move'].indexOf(action) !== -1; 		var protectMissing = action === 'protect' && missing && (ctx.protectEdit || ctx.protectMove); 		var saltMissing = action === 'protect' && !missing && ctx.protectCreate;  		if (actionMissing || protectMissing || saltMissing) { 			ctx.statusElement.error('Cannot ' + action + ' the page because it ' + (missing ? 'no longer' : 'already') + ' exists'); 			onFailure(this); 			return false; 		}  		// Delete, undelete, move 		// extract protection info 		var editprot; 		if (action === 'undelete') { 			editprot = response.pages[0].protection.filter(function(pr) { 				return pr.type === 'create' && pr.level === 'sysop'; 			}).pop(); 		} else if (action === 'delete' || action === 'move') { 			editprot = response.pages[0].protection.filter(function(pr) { 				return pr.type === 'edit' && pr.level === 'sysop'; 			}).pop(); 		} 		if (editprot && !ctx.suppressProtectWarning && 			!confirm('You are about to ' + action + ' the fully protected page "' + ctx.pageName + 			(editprot.expiry === 'infinity' ? '" (protected indefinitely)' : '" (protection expiring ' + new Morebits.date(editprot.expiry).calendar('utc') + ' (UTC))') + 			'.  \n\nClick OK to proceed with ' + action + ', or Cancel to skip.')) { 			ctx.statusElement.error('Aborted ' + action + ' on fully protected page.'); 			onFailure(this); 			return false; 		}  		if (!response.tokens.csrftoken) { 			ctx.statusElement.error('টোকেন সংগ্রহ ব্যর্থ হয়েছে।'); 			onFailure(this); 			return false; 		} 		return true; // all OK 	};  	var fnProcessMove = function() { 		var pageTitle, token;  		if (fnCanUseMwUserToken('move')) { 			token = mw.user.tokens.get('csrfToken'); 			pageTitle = ctx.pageName; 		} else { 			var response = ctx.moveApi.getResponse().query;  			if (!fnProcessChecks('move', ctx.onMoveFailure, response)) { 				return; // abort 			}  			token = response.tokens.csrftoken; 			var page = response.pages[0]; 			pageTitle = page.title; 			ctx.watched = page.watchlistexpiry || page.watched; 		}  		var query = { 			action: 'move', 			from: pageTitle, 			to: ctx.moveDestination, 			token: token, 			reason: ctx.editSummary, 			watchlist: ctx.watchlistOption, 			format: 'json' 		}; 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		} 		if (ctx.moveTalkPage) { 			query.movetalk = 'true'; 		} 		if (ctx.moveSubpages) { 			query.movesubpages = 'true'; 		} 		if (ctx.moveSuppressRedirect) { 			query.noredirect = 'true'; 		}  		ctx.moveProcessApi = new Morebits.wiki.api(msg('moving-page', 'পাতা স্থানান্তর করা হচ্ছে...'), query, ctx.onMoveSuccess, ctx.statusElement, ctx.onMoveFailure); 		ctx.moveProcessApi.setParent(this); 		ctx.moveProcessApi.post(); 	};  	var fnProcessPatrol = function() { 		var query = { 			action: 'patrol', 			format: 'json' 		};  		// Didn't need to load the page 		if (ctx.rcid) { 			query.rcid = ctx.rcid; 			query.token = mw.user.tokens.get('patrolToken'); 		} else { 			var response = ctx.patrolApi.getResponse().query;  			// Don't patrol if not unpatrolled 			if (!response.recentchanges[0].unpatrolled) { 				return; 			}  			var lastrevid = response.pages[0].lastrevid; 			if (!lastrevid) { 				return; 			} 			query.revid = lastrevid;  			var token = response.tokens.csrftoken; 			if (!token) { 				return; 			} 			query.token = token; 		} 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		var patrolStat = new Morebits.status('টহলকৃত হিসেবে পাতা চিহ্নিত করা হচ্ছে');  		ctx.patrolProcessApi = new Morebits.wiki.api('টহলদান করা হচ্ছে...', query, null, patrolStat); 		ctx.patrolProcessApi.setParent(this); 		ctx.patrolProcessApi.post(); 	};  	// Ensure that the page is curatable 	var fnProcessTriageList = function() { 		if (ctx.pageID) { 			ctx.csrfToken = mw.user.tokens.get('csrfToken'); 		} else { 			var response = ctx.triageApi.getResponse().query;  			ctx.pageID = response.pages[0].pageid; 			if (!ctx.pageID) { 				return; 			}  			ctx.csrfToken = response.tokens.csrftoken; 			if (!ctx.csrfToken) { 				return; 			} 		}  		var query = { 			action: 'pagetriagelist', 			page_id: ctx.pageID, 			format: 'json' 		};  		ctx.triageProcessListApi = new Morebits.wiki.api('checking curation status...', query, fnProcessTriage); 		ctx.triageProcessListApi.setParent(this); 		ctx.triageProcessListApi.post(); 	};  	// callback from triageProcessListApi.post() 	var fnProcessTriage = function() { 		var responseList = ctx.triageProcessListApi.getResponse().pagetriagelist; 		// Exit if not in the queue 		if (!responseList || responseList.result !== 'success') { 			return; 		} 		var page = responseList.pages && responseList.pages[0]; 		// Do nothing if page already triaged/patrolled 		if (!page || !parseInt(page.patrol_status, 10)) { 			var query = { 				action: 'pagetriageaction', 				pageid: ctx.pageID, 				reviewed: 1, 				// tags: ctx.changeTags, // pagetriage tag support: [[phab:T252980]] 				// Could use an adder to modify/create note: 				// summaryAd, but that seems overwrought 				token: ctx.csrfToken, 				format: 'json' 			}; 			var triageStat = new Morebits.status('Marking page as curated'); 			ctx.triageProcessApi = new Morebits.wiki.api('curating page...', query, null, triageStat); 			ctx.triageProcessApi.setParent(this); 			ctx.triageProcessApi.post(); 		} 	};  	var fnProcessDelete = function() { 		var pageTitle, token;  		if (fnCanUseMwUserToken('delete')) { 			token = mw.user.tokens.get('csrfToken'); 			pageTitle = ctx.pageName; 		} else { 			var response = ctx.deleteApi.getResponse().query;  			if (!fnProcessChecks('delete', ctx.onDeleteFailure, response)) { 				return; // abort 			}  			token = response.tokens.csrftoken; 			var page = response.pages[0]; 			pageTitle = page.title; 			ctx.watched = page.watchlistexpiry || page.watched; 		}  		var query = { 			action: 'delete', 			title: pageTitle, 			token: token, 			reason: ctx.editSummary, 			watchlist: ctx.watchlistOption, 			format: 'json' 		}; 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		}  		ctx.deleteProcessApi = new Morebits.wiki.api('পাতা অপসারণ করা হচ্ছে...', query, ctx.onDeleteSuccess, ctx.statusElement, fnProcessDeleteError); 		ctx.deleteProcessApi.setParent(this); 		ctx.deleteProcessApi.post(); 	};  	// callback from deleteProcessApi.post() 	var fnProcessDeleteError = function() {  		var errorCode = ctx.deleteProcessApi.getErrorCode();  		// check for "Database query error" 		if (errorCode === 'internal_api_error_DBQueryError' && ctx.retries++ < ctx.maxRetries) { 			ctx.statusElement.info('Database query error, retrying'); 			--Morebits.wiki.numberOfActionsLeft;  // allow for normal completion if retry succeeds 			ctx.deleteProcessApi.post(); // give it another go!  		} else if (errorCode === 'missingtitle') { 			ctx.statusElement.error('পাতা অপসারণ করা যায়নি, কারণ এটি আর বিদ্যমান নেই'); 			if (ctx.onDeleteFailure) { 				ctx.onDeleteFailure.call(this, ctx.deleteProcessApi);  // invoke callback 			} 		// hard error, give up 		} else { 			ctx.statusElement.error('Failed to delete the page: ' + ctx.deleteProcessApi.getErrorText()); 			if (ctx.onDeleteFailure) { 				ctx.onDeleteFailure.call(this, ctx.deleteProcessApi);  // invoke callback 			} 		} 	};  	var fnProcessUndelete = function() { 		var pageTitle, token;  		if (fnCanUseMwUserToken('undelete')) { 			token = mw.user.tokens.get('csrfToken'); 			pageTitle = ctx.pageName; 		} else { 			var response = ctx.undeleteApi.getResponse().query;  			if (!fnProcessChecks('undelete', ctx.onUndeleteFailure, response)) { 				return; // abort 			}  			token = response.tokens.csrftoken; 			var page = response.pages[0]; 			pageTitle = page.title; 			ctx.watched = page.watchlistexpiry || page.watched; 		}  		var query = { 			action: 'undelete', 			title: pageTitle, 			token: token, 			reason: ctx.editSummary, 			watchlist: ctx.watchlistOption, 			format: 'json' 		}; 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		}  		ctx.undeleteProcessApi = new Morebits.wiki.api('পাতা পুনরুদ্ধার করা হচ্ছে...', query, ctx.onUndeleteSuccess, ctx.statusElement, fnProcessUndeleteError); 		ctx.undeleteProcessApi.setParent(this); 		ctx.undeleteProcessApi.post(); 	};  	// callback from undeleteProcessApi.post() 	var fnProcessUndeleteError = function() {  		var errorCode = ctx.undeleteProcessApi.getErrorCode();  		// check for "Database query error" 		if (errorCode === 'internal_api_error_DBQueryError') { 			if (ctx.retries++ < ctx.maxRetries) { 				ctx.statusElement.info('Database query error, retrying'); 				--Morebits.wiki.numberOfActionsLeft;  // allow for normal completion if retry succeeds 				ctx.undeleteProcessApi.post(); // give it another go! 			} else { 				ctx.statusElement.error('Repeated database query error, please try again'); 				if (ctx.onUndeleteFailure) { 					ctx.onUndeleteFailure.call(this, ctx.undeleteProcessApi);  // invoke callback 				} 			} 		} else if (errorCode === 'cantundelete') { 			ctx.statusElement.error('Cannot undelete the page, either because there are no revisions to undelete or because it has already been undeleted'); 			if (ctx.onUndeleteFailure) { 				ctx.onUndeleteFailure.call(this, ctx.undeleteProcessApi);  // invoke callback 			} 		// hard error, give up 		} else { 			ctx.statusElement.error('পাতাটি পুনরুদ্ধার করা ব্যর্থ হয়েছে: ' + ctx.undeleteProcessApi.getErrorText()); 			if (ctx.onUndeleteFailure) { 				ctx.onUndeleteFailure.call(this, ctx.undeleteProcessApi);  // invoke callback 			} 		} 	};  	var fnProcessProtect = function() { 		var response = ctx.protectApi.getResponse().query;  		if (!fnProcessChecks('protect', ctx.onProtectFailure, response)) { 			return; // abort 		}  		var token = response.tokens.csrftoken; 		var page = response.pages[0]; 		var pageTitle = page.title; 		ctx.watched = page.watchlistexpiry || page.watched;  		// Fetch existing protection levels 		var prs = response.pages[0].protection; 		var editprot, moveprot, createprot; 		prs.forEach(function(pr) { 			// Filter out protection from cascading 			if (pr.type === 'edit' && !pr.source) { 				editprot = pr; 			} else if (pr.type === 'move') { 				moveprot = pr; 			} else if (pr.type === 'create') { 				createprot = pr; 			} 		});  		// Fall back to current levels if not explicitly set 		if (!ctx.protectEdit && editprot) { 			ctx.protectEdit = { level: editprot.level, expiry: editprot.expiry }; 		} 		if (!ctx.protectMove && moveprot) { 			ctx.protectMove = { level: moveprot.level, expiry: moveprot.expiry }; 		} 		if (!ctx.protectCreate && createprot) { 			ctx.protectCreate = { level: createprot.level, expiry: createprot.expiry }; 		}  		// Default to pre-existing cascading protection if unchanged (similar to above) 		if (ctx.protectCascade === null) { 			ctx.protectCascade = !!prs.filter(function(pr) { 				return pr.cascade; 			}).length; 		} 		// Warn if cascading protection being applied with an invalid protection level, 		// which for edit protection will cause cascading to be silently stripped 		if (ctx.protectCascade) { 			// On move protection, this is technically stricter than the MW API, 			// but seems reasonable to avoid dumb values and misleading log entries (T265626) 			if (((!ctx.protectEdit || ctx.protectEdit.level !== 'sysop') || 				(!ctx.protectMove || ctx.protectMove.level !== 'sysop')) && 				!confirm('You have cascading protection enabled on "' + ctx.pageName + 				'" but have not selected uniform sysop-level protection.\n\n' + 				'Click OK to adjust and proceed with sysop-level cascading protection, or Cancel to skip this action.')) { 				ctx.statusElement.error('Cascading protection was aborted.'); 				ctx.onProtectFailure(this); 				return; 			}  			ctx.protectEdit.level = 'sysop'; 			ctx.protectMove.level = 'sysop'; 		}  		// Build protection levels and expirys (expiries?) for query 		var protections = [], expirys = []; 		if (ctx.protectEdit) { 			protections.push('edit=' + ctx.protectEdit.level); 			expirys.push(ctx.protectEdit.expiry); 		}  		if (ctx.protectMove) { 			protections.push('move=' + ctx.protectMove.level); 			expirys.push(ctx.protectMove.expiry); 		}  		if (ctx.protectCreate) { 			protections.push('create=' + ctx.protectCreate.level); 			expirys.push(ctx.protectCreate.expiry); 		}  		var query = { 			action: 'protect', 			title: pageTitle, 			token: token, 			protections: protections.join('|'), 			expiry: expirys.join('|'), 			reason: ctx.editSummary, 			watchlist: ctx.watchlistOption, 			format: 'json' 		}; 		// Only shows up in logs, not page history [[phab:T259983]] 		if (ctx.changeTags) { 			query.tags = ctx.changeTags; 		}  		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		} 		if (ctx.protectCascade) { 			query.cascade = 'true'; 		}  		ctx.protectProcessApi = new Morebits.wiki.api('পাতা সুরক্ষিত করা হচ্ছে...', query, ctx.onProtectSuccess, ctx.statusElement, ctx.onProtectFailure); 		ctx.protectProcessApi.setParent(this); 		ctx.protectProcessApi.post(); 	};  	var fnProcessStabilize = function() { 		var pageTitle, token;  		if (fnCanUseMwUserToken('stabilize')) { 			token = mw.user.tokens.get('csrfToken'); 			pageTitle = ctx.pageName; 		} else { 			var response = ctx.stabilizeApi.getResponse().query;  			// 'stabilize' as a verb not necessarily well understood 			if (!fnProcessChecks('stabilize', ctx.onStabilizeFailure, response)) { 				return; // abort 			}  			token = response.tokens.csrftoken; 			var page = response.pages[0]; 			pageTitle = page.title; 			// Doesn't support watchlist expiry [[phab:T263336]] 			// ctx.watched = page.watchlistexpiry || page.watched; 		}  		var query = { 			action: 'stabilize', 			title: pageTitle, 			token: token, 			protectlevel: ctx.flaggedRevs.level, 			expiry: ctx.flaggedRevs.expiry, 			// tags: ctx.changeTags, // flaggedrevs tag support: [[phab:T247721]] 			reason: ctx.editSummary, 			watchlist: ctx.watchlistOption, 			format: 'json' 		};  		/* Doesn't support watchlist expiry [[phab:T263336]] 		if (fnApplyWatchlistExpiry()) { 			query.watchlistexpiry = ctx.watchlistExpiry; 		} 		*/  		ctx.stabilizeProcessApi = new Morebits.wiki.api('স্থিতিশীলতা সেটিং কনফিগার করা হচ্ছে...', query, ctx.onStabilizeSuccess, ctx.statusElement, ctx.onStabilizeFailure); 		ctx.stabilizeProcessApi.setParent(this); 		ctx.stabilizeProcessApi.post(); 	};  	var sleep = function(milliseconds) { 		var deferred = $.Deferred(); 		setTimeout(deferred.resolve, milliseconds); 		return deferred; 	};  }; // end Morebits.wiki.page  /* Morebits.wiki.page TODO: (XXX) * - Should we retry loads also? * - Need to reset current action before the save? * - Deal with action.completed stuff * - Need to reset all parameters once done (e.g. edit summary, move destination, etc.) */  /* **************** Morebits.wiki.preview **************** */ /**  * Use the API to parse a fragment of wikitext and render it as HTML.  *  * The suggested implementation pattern (in {@link Morebits.simpleWindow} and  * {@link Morebits.quickForm} situations) is to construct a  * `Morebits.wiki.preview` object after rendering a `Morebits.quickForm`, and  * bind the object to an arbitrary property of the form (e.g. |previewer|).  * For an example, see twinklewarn.js.  *  * @memberof Morebits.wiki  * @class  * @param {HTMLElement} previewbox - The element that will contain the rendered HTML,  * usually a <div> element.  */ Morebits.wiki.preview = function(previewbox) { 	this.previewbox = previewbox; 	$(previewbox).addClass('morebits-previewbox').hide();  	/** 	 * Displays the preview box, and begins an asynchronous attempt 	 * to render the specified wikitext. 	 * 	 * @param {string} wikitext - Wikitext to render; most things should work, including `subst:` and `~~~~`. 	 * @param {string} [pageTitle] - Optional parameter for the page this should be rendered as being on, if omitted it is taken as the current page. 	 * @param {string} [sectionTitle] - If provided, render the text as a new section using this as the title. 	 * @returns {jQuery.promise} 	 */ 	this.beginRender = function(wikitext, pageTitle, sectionTitle) { 		$(previewbox).show();  		var statusspan = document.createElement('span'); 		previewbox.appendChild(statusspan); 		Morebits.status.init(statusspan);  		var query = { 			action: 'parse', 			prop: 'text', 			pst: 'true',  // PST = pre-save transform; this makes substitution work properly 			text: wikitext, 			title: pageTitle || mw.config.get('wgPageName'), 			disablelimitreport: true, 			format: 'json' 		}; 		if (sectionTitle) { 			query.section = 'new'; 			query.sectiontitle = sectionTitle; 		} 		var renderApi = new Morebits.wiki.api('লোড করা হচ্ছে...', query, fnRenderSuccess, new Morebits.status('প্রাকদর্শন')); 		return renderApi.post(); 	};  	var fnRenderSuccess = function(apiobj) { 		var html = apiobj.getResponse().parse.text; 		if (!html) { 			apiobj.statelem.error('প্রাকদর্শন ব্যর্থ হয়েছে, অথবা টেমপ্লেটটি ফাঁকা'); 			return; 		} 		previewbox.innerHTML = html; 		$(previewbox).find('a').attr('target', '_blank'); // this makes links open in new tab 	};  	/** Hides the preview box and clears it. */ 	this.closePreview = function() { 		$(previewbox).empty().hide(); 	}; };  /* **************** Morebits.wikitext **************** */  /**  * Wikitext manipulation.  *  * @namespace Morebits.wikitext  * @memberof Morebits  */ Morebits.wikitext = {};  /**  * Get the value of every parameter found in the wikitext of a given template.  *  * @memberof Morebits.wikitext  * @param {string} text - Wikitext containing a template.  * @param {number} [start=0] - Index noting where in the text the template begins.  * @returns {object} `{name: templateName, parameters: {key: value}}`.  */ Morebits.wikitext.parseTemplate = function(text, start) { 	start = start || 0;  	var level = []; // Track of how deep we are ({{, {{{, or [[) 	var count = -1;  // Number of parameters found 	var unnamed = 0; // Keep track of what number an unnamed parameter should receive 	var equals = -1; // After finding "=" before a parameter, the index; otherwise, -1 	var current = ''; 	var result = { 		name: '', 		parameters: {} 	}; 	var key, value;  	/** 	 * Function to handle finding parameter values. 	 * 	 * @param {boolean} [final=false] - Whether this is the final 	 * parameter and we need to remove the trailing `}}`. 	 */ 	function findParam(final) { 		// Nothing found yet, this must be the template name 		if (count === -1) { 			result.name = current.substring(2).trim(); 			++count; 		} else { 			// In a parameter 			if (equals !== -1) { 				// We found an equals, so save the parameter as key: value 				key = current.substring(0, equals).trim(); 				value = final ? current.substring(equals + 1, current.length - 2).trim() : current.substring(equals + 1).trim(); 				result.parameters[key] = value; 				equals = -1; 			} else { 				// No equals, so it must be unnamed; no trim since whitespace allowed 				var param = final ? current.substring(equals + 1, current.length - 2) : current; 				if (param) { 					result.parameters[++unnamed] = param; 					++count; 				} 			} 		} 	}  	for (var i = start; i < text.length; ++i) { 		var test3 = text.substr(i, 3); 		if (test3 === '{{{' || (test3 === '}}}' && level[level.length - 1] === 3)) { 			current += test3; 			i += 2; 			if (test3 === '{{{') { 				level.push(3); 			} else { 				level.pop(); 			} 			continue; 		} 		var test2 = text.substr(i, 2); 		// Entering a template (or link) 		if (test2 === '{{' || test2 === '[[') { 			current += test2; 			++i; 			if (test2 === '{{') { 				level.push(2); 			} else { 				level.push('wl'); 			} 			continue; 		} 		// Either leaving a link or template/parser function 		if ((test2 === '}}' && level[level.length - 1] === 2) || 			(test2 === ']]' && level[level.length - 1] === 'wl')) { 			current += test2; 			++i; 			level.pop();  			// Find the final parameter if this really is the end 			if (test2 === '}}' && level.length === 0) { 				findParam(true); 				break; 			} 			continue; 		}  		if (text.charAt(i) === '|' && level.length === 1) { 			// Another pipe found, toplevel, so parameter coming up! 			findParam(); 			current = ''; 		} else if (equals === -1 && text.charAt(i) === '=' && level.length === 1) { 			// Equals found, toplevel 			equals = current.length; 			current += text.charAt(i); 		} else { 			// Just advance the position 			current += text.charAt(i); 		} 	}  	return result; };  /**  * Adjust and manipulate the wikitext of a page.  *  * @class  * @memberof Morebits.wikitext  * @param {string} text - Wikitext to be manipulated.  */ Morebits.wikitext.page = function mediawikiPage(text) { 	this.text = text; };  Morebits.wikitext.page.prototype = { 	text: '',  	/** 	 * Removes links to `link_target` from the page text. 	 * 	 * @param {string} link_target 	 * @returns {Morebits.wikitext.page} 	 */ 	removeLink: function(link_target) { 		// Remove a leading colon, to be handled later 		if (link_target.indexOf(':') === 0) { 			link_target = link_target.slice(1); 		} 		var link_re_string = '', ns = '', title = link_target;  		var idx = link_target.indexOf(':'); 		if (idx > 0) { 			ns = link_target.slice(0, idx); 			title = link_target.slice(idx + 1);  			link_re_string = Morebits.namespaceRegex(mw.config.get('wgNamespaceIds')[ns.toLowerCase().replace(/ /g, '_')]) + ':'; 		} 		link_re_string += Morebits.pageNameRegex(title);  		// Allow for an optional leading colon, e.g. [[:User:Test]] 		// Files and Categories become links with a leading colon, e.g. [[:File:Test.png]] 		var colon = new RegExp(Morebits.namespaceRegex([6, 14])).test(ns) ? ':' : ':?';  		var link_simple_re = new RegExp('\\[\\[' + colon + '(' + link_re_string + ')\\]\\]', 'g'); 		var link_named_re = new RegExp('\\[\\[' + colon + link_re_string + '\\|(.+?)\\]\\]', 'g'); 		this.text = this.text.replace(link_simple_re, '$1').replace(link_named_re, '$1'); 		return this; 	},  	/** 	 * Comments out images from page text; if used in a gallery, deletes the whole line. 	 * If used as a template argument (not necessarily with `File:` prefix), the template parameter is commented out. 	 * 	 * @param {string} image - Image name without `File:` prefix. 	 * @param {string} [reason] - Reason to be included in comment, alongside the commented-out image. 	 * @returns {Morebits.wikitext.page} 	 */ 	commentOutImage: function(image, reason) { 		var unbinder = new Morebits.unbinder(this.text); 		unbinder.unbind('<!--', '-->');  		reason = reason ? reason + ': ' : ''; 		var image_re_string = Morebits.pageNameRegex(image);  		// Check for normal image links, i.e. [[File:Foobar.png|...]] 		// Will eat the whole link 		var links_re = new RegExp('\\[\\[' + Morebits.namespaceRegex(6) + ':\\s*' + image_re_string + '\\s*[\\|(?:\\]\\])]'); 		var allLinks = Morebits.string.splitWeightedByKeys(unbinder.content, '[[', ']]'); 		for (var i = 0; i < allLinks.length; ++i) { 			if (links_re.test(allLinks[i])) { 				var replacement = '<!-- ' + reason + allLinks[i] + ' -->'; 				unbinder.content = unbinder.content.replace(allLinks[i], replacement); 			} 		} 		// unbind the newly created comments 		unbinder.unbind('<!--', '-->');  		// Check for gallery images, i.e. instances that must start on a new line, 		// eventually preceded with some space, and must include File: prefix 		// Will eat the whole line. 		var gallery_image_re = new RegExp('(^\\s*' + Morebits.namespaceRegex(6) + ':\\s*' + image_re_string + '\\s*(?:\\|.*?$|$))', 'mg'); 		unbinder.content = unbinder.content.replace(gallery_image_re, '<!-- ' + reason + '$1 -->');  		// unbind the newly created comments 		unbinder.unbind('<!--', '-->');  		// Check free image usages, for example as template arguments, might have the File: prefix excluded, but must be preceded by an | 		// Will only eat the image name and the preceding bar and an eventual named parameter 		var free_image_re = new RegExp('(\\|\\s*(?:[\\w\\s]+\\=)?\\s*(?:' + Morebits.namespaceRegex(6) + ':\\s*)?' + image_re_string + ')', 'mg'); 		unbinder.content = unbinder.content.replace(free_image_re, '<!-- ' + reason + '$1 -->'); 		// Rebind the content now, we are done! 		this.text = unbinder.rebind(); 		return this; 	},  	/** 	 * Converts uses of [[File:`image`]] to [[File:`image`|`data`]]. 	 * 	 * @param {string} image - Image name without File: prefix. 	 * @param {string} data - The display options. 	 * @returns {Morebits.wikitext.page} 	 */ 	addToImageComment: function(image, data) { 		var image_re_string = Morebits.pageNameRegex(image); 		var links_re = new RegExp('\\[\\[' + Morebits.namespaceRegex(6) + ':\\s*' + image_re_string + '\\s*[\\|(?:\\]\\])]'); 		var allLinks = Morebits.string.splitWeightedByKeys(this.text, '[[', ']]'); 		for (var i = 0; i < allLinks.length; ++i) { 			if (links_re.test(allLinks[i])) { 				var replacement = allLinks[i]; 				// just put it at the end? 				replacement = replacement.replace(/\]\]$/, '|' + data + ']]'); 				this.text = this.text.replace(allLinks[i], replacement); 			} 		} 		var gallery_re = new RegExp('^(\\s*' + image_re_string + '.*?)\\|?(.*?)$', 'mg'); 		var newtext = '$1|$2 ' + data; 		this.text = this.text.replace(gallery_re, newtext); 		return this; 	},  	/** 	 * Remove all transclusions of a template from page text. 	 * 	 * @param {string} template - Page name whose transclusions are to be removed, 	 * include namespace prefix only if not in template namespace. 	 * @returns {Morebits.wikitext.page} 	 */ 	removeTemplate: function(template) { 		var template_re_string = Morebits.pageNameRegex(template); 		var links_re = new RegExp('\\{\\{(?:' + Morebits.namespaceRegex(10) + ':)?\\s*' + template_re_string + '\\s*[\\|(?:\\}\\})]'); 		var allTemplates = Morebits.string.splitWeightedByKeys(this.text, '{{', '}}', [ '{{{', '}}}' ]); 		for (var i = 0; i < allTemplates.length; ++i) { 			if (links_re.test(allTemplates[i])) { 				this.text = this.text.replace(allTemplates[i], ''); 			} 		} 		return this; 	},  	/** 	 * Smartly insert a tag atop page text but after specified templates, 	 * such as hatnotes, short description, or deletion and protection templates. 	 * Notably, does *not* insert a newline after the tag. 	 * 	 * @param {string} tag - The tag to be inserted. 	 * @param {string|string[]} regex - Templates after which to insert tag, 	 * given as either as a (regex-valid) string or an array to be joined by pipes. 	 * @param {string} [flags=i] - Regex flags to apply.  `''` to provide no flags; 	 * other falsey values will default to `i`. 	 * @param {string|string[]} [preRegex] - Optional regex string or array to match 	 * before any template matches (i.e. before `{{`), such as html comments. 	 * @returns {Morebits.wikitext.page} 	 */ 	insertAfterTemplates: function(tag, regex, flags, preRegex) { 		if (typeof tag === 'undefined') { 			throw new Error('No tag provided'); 		}  		// .length is only a property of strings and arrays so we 		// shouldn't need to check type 		if (typeof regex === 'undefined' || !regex.length) { 			throw new Error('No regex provided'); 		} else if (Array.isArray(regex)) { 			regex = regex.join('|'); 		}  		if (typeof flags !== 'string') { 			flags = 'i'; 		}  		if (!preRegex || !preRegex.length) { 			preRegex = ''; 		} else if (Array.isArray(preRegex)) { 			preRegex = preRegex.join('|'); 		}  		// Regex is extra complicated to allow for templates with 		// parameters and to handle whitespace properly 		this.text = this.text.replace( 			new RegExp( 				// leading whitespace 				'^\\s*' + 				// capture template(s) 				'(?:((?:\\s*' + 				// Pre-template regex, such as leading html comments 				preRegex + '|' + 				// begin template format 				'\\{\\{\\s*(?:' + 				// Template regex 				regex + 				// end main template name, optionally with a number 				// Probably remove the (?:) though 				')\\d*\\s*' + 				// template parameters 				'(\\|(?:\\{\\{[^{}]*\\}\\}|[^{}])*)?' + 				// end template format 				'\\}\\})+' + 				// end capture 				'(?:\\s*\\n)?)' + 				// trailing whitespace 				'\\s*)?', 				flags), '$1' + tag 		); 		return this; 	},  	/** 	 * Get the manipulated wikitext. 	 * 	 * @returns {string} 	 */ 	getText: function() { 		return this.text; 	} };  /* *********** Morebits.userspaceLogger ************ */ /**  * Handles logging actions to a userspace log.  * Used in CSD, PROD, and XFD.  *  * @memberof Morebits  * @class  * @param {string} logPageName - Title of the subpage of the current user's log.  */ Morebits.userspaceLogger = function(logPageName) { 	if (!logPageName) { 		throw new Error('no log page name specified'); 	} 	/** 	 * The text to prefix the log with upon creation, defaults to empty. 	 * 	 * @type {string} 	 */ 	this.initialText = ''; 	/** 	 * The header level to use for months, defaults to 3 (`===`). 	 * 	 * @type {number} 	 */ 	this.headerLevel = 3; 	this.changeTags = '';  	/** 	 * Log the entry. 	 * 	 * @param {string} logText - Doesn't include leading `#` or `*`. 	 * @param {string} summaryText - Edit summary. 	 * @returns {JQuery.Promise} 	 */ 	this.log = function(logText, summaryText) { 		var def = $.Deferred(); 		if (!logText) { 			return def.reject(); 		} 		var page = new Morebits.wiki.page('ব্যবহারকারী:' + mw.config.get('wgUserName') + '/' + logPageName, 			'ব্যবহারকারী নামস্থানের লগে ভুক্তি যোগ করা হয়েছে'); // make this '... to ' + logPageName ? 		page.load(function(pageobj) { 			// add blurb if log page doesn't exist or is blank 			var text = pageobj.getPageText() || this.initialText;  			// create monthly header if it doesn't exist already 			var date = new Morebits.date(pageobj.getLoadTime()); 			if (!date.monthHeaderRegex().exec(text)) { 				text += '\n\n' + date.monthHeader(this.headerLevel); 			}  			pageobj.setPageText(text + '\n' + logText); 			pageobj.setEditSummary(summaryText); 			pageobj.setChangeTags(this.changeTags); 			pageobj.setCreateOption('recreate'); 			pageobj.save(def.resolve, def.reject); 		}.bind(this)); 		return def; 	}; };  /* **************** Morebits.status **************** */ /**  * Create and show status messages of varying urgency.  * {@link Morebits.status.init|Morebits.status.init()} must be called before  * any status object is created, otherwise those statuses won't be visible.  *  * @memberof Morebits  * @class  * @param {string} text - Text before the the colon `:`.  * @param {string} stat - Text after the colon `:`.  * @param {string} [type=status] - Determine the font color of the status  * line, allowable values are: `status` (blue), `info` (green), `warn` (red),  * or `error` (bold red).  */  Morebits.status = function Status(text, stat, type) { 	this.textRaw = text; 	this.text = Morebits.createHtml(text); 	this.type = type || 'status'; 	this.generate(); 	if (stat) { 		this.update(stat, type); 	} };  /**  * Specify an area for status message elements to be added to.  *  * @memberof Morebits.status  * @param {HTMLElement} root - Usually a div element.  * @throws If `root` is not an `HTMLElement`.  */ Morebits.status.init = function(root) { 	if (!(root instanceof Element)) { 		throw new Error('object not an instance of Element'); 	} 	while (root.hasChildNodes()) { 		root.removeChild(root.firstChild); 	} 	Morebits.status.root = root; 	Morebits.status.errorEvent = null; };  Morebits.status.root = null;  /**  * @memberof Morebits.status  * @param {Function} handler - Function to execute on error.  * @throws When `handler` is not a function.  */ Morebits.status.onError = function(handler) { 	if (typeof handler === 'function') { 		Morebits.status.errorEvent = handler; 	} else { 		throw 'Morebits.status.onError: handler is not a function'; 	} };  Morebits.status.prototype = { 	stat: null, 	statRaw: null, 	text: null, 	textRaw: null, 	type: 'status', 	target: null, 	node: null, 	linked: false,  	/** Add the status element node to the DOM. */ 	link: function() { 		if (!this.linked && Morebits.status.root) { 			Morebits.status.root.appendChild(this.node); 			this.linked = true; 		} 	},  	/** Remove the status element node from the DOM. */ 	unlink: function() { 		if (this.linked) { 			Morebits.status.root.removeChild(this.node); 			this.linked = false; 		} 	},  	/** 	 * Update the status. 	 * 	 * @param {string} status - Part of status message after colon. 	 * @param {string} type - 'status' (blue), 'info' (green), 'warn' 	 * (red), or 'error' (bold red). 	 */ 	update: function(status, type) { 		this.statRaw = status; 		this.stat = Morebits.createHtml(status); 		if (type) { 			this.type = type; 			if (type === 'error') { 				// hack to force the page not to reload when an error is output - see also Morebits.status() above 				Morebits.wiki.numberOfActionsLeft = 1000;  				// call error callback 				if (Morebits.status.errorEvent) { 					Morebits.status.errorEvent(); 				}  				// also log error messages in the browser console 				console.error(this.textRaw + ': ' + this.statRaw); // eslint-disable-line no-console 			} 		} 		this.render(); 	},  	/** Produce the html for first part of the status message. */ 	generate: function() { 		this.node = document.createElement('div'); 		this.node.appendChild(document.createElement('span')).appendChild(this.text); 		this.node.appendChild(document.createElement('span')).appendChild(document.createTextNode(': ')); 		this.target = this.node.appendChild(document.createElement('span')); 		this.target.appendChild(document.createTextNode('')); // dummy node 	},  	/** Complete the html, for the second part of the status message. */ 	render: function() { 		this.node.className = 'morebits_status_' + this.type; 		while (this.target.hasChildNodes()) { 			this.target.removeChild(this.target.firstChild); 		} 		this.target.appendChild(this.stat); 		this.link(); 	}, 	status: function(status) { 		this.update(status, 'status'); 	}, 	info: function(status) { 		this.update(status, 'info'); 	}, 	warn: function(status) { 		this.update(status, 'warn'); 	}, 	error: function(status) { 		this.update(status, 'error'); 	} }; /**  * @memberof Morebits.status  * @param {string} text - Before colon  * @param {string} status - After colon  * @returns {Morebits.status} - `status`-type (blue)  */ Morebits.status.status = function(text, status) { 	return new Morebits.status(text, status); }; /**  * @memberof Morebits.status  * @param {string} text - Before colon  * @param {string} status - After colon  * @returns {Morebits.status} - `info`-type (green)  */ Morebits.status.info = function(text, status) { 	return new Morebits.status(text, status, 'info'); }; /**  * @memberof Morebits.status  * @param {string} text - Before colon  * @param {string} status - After colon  * @returns {Morebits.status} - `warn`-type (red)  */ Morebits.status.warn = function(text, status) { 	return new Morebits.status(text, status, 'warn'); }; /**  * @memberof Morebits.status  * @param {string} text - Before colon  * @param {string} status - After colon  * @returns {Morebits.status} - `error`-type (bold red)  */ Morebits.status.error = function(text, status) { 	return new Morebits.status(text, status, 'error'); };  /**  * For the action complete message at the end, create a status line without  * a colon separator.  *  * @memberof Morebits.status  * @param {string} text  */ Morebits.status.actionCompleted = function(text) { 	var node = document.createElement('div'); 	node.appendChild(document.createElement('b')).appendChild(document.createTextNode(text)); 	node.className = 'morebits_status_info morebits_action_complete'; 	if (Morebits.status.root) { 		Morebits.status.root.appendChild(node); 	} };  /**  * Display the user's rationale, comments, etc. Back to them after a failure,  * so that they may re-use it.  *  * @memberof Morebits.status  * @param {string} comments  * @param {string} message  */ Morebits.status.printUserText = function(comments, message) { 	var p = document.createElement('p'); 	p.innerHTML = message; 	var div = document.createElement('div'); 	div.className = 'toccolours'; 	div.style.marginTop = '0'; 	div.style.whiteSpace = 'pre-wrap'; 	div.textContent = comments; 	p.appendChild(div); 	Morebits.status.root.appendChild(p); };  /**  * Simple helper function to create a simple node.  *  * @param {string} type - Type of HTML element.  * @param {string} content - Text content.  * @param {string} [color] - Font color.  * @returns {HTMLElement}  */ Morebits.htmlNode = function (type, content, color) { 	var node = document.createElement(type); 	if (color) { 		node.style.color = color; 	} 	node.appendChild(document.createTextNode(content)); 	return node; };  /**  * Add shift-click support for checkboxes. The wikibits version  * (`window.addCheckboxClickHandlers`) has some restrictions, and doesn't work  * with checkboxes inside a sortable table, so let's build our own.  *  * @param jQuerySelector  * @param jQueryContext  */ Morebits.checkboxShiftClickSupport = function (jQuerySelector, jQueryContext) { 	var lastCheckbox = null;  	function clickHandler(event) { 		var thisCb = this; 		if (event.shiftKey && lastCheckbox !== null) { 			var cbs = $(jQuerySelector, jQueryContext); // can't cache them, obviously, if we want to support resorting 			var index = -1, lastIndex = -1, i; 			for (i = 0; i < cbs.length; i++) { 				if (cbs[i] === thisCb) { 					index = i; 					if (lastIndex > -1) { 						break; 					} 				} 				if (cbs[i] === lastCheckbox) { 					lastIndex = i; 					if (index > -1) { 						break; 					} 				} 			}  			if (index > -1 && lastIndex > -1) { 				// inspired by wikibits 				var endState = thisCb.checked; 				var start, finish; 				if (index < lastIndex) { 					start = index + 1; 					finish = lastIndex; 				} else { 					start = lastIndex; 					finish = index - 1; 				}  				for (i = start; i <= finish; i++) { 					if (cbs[i].checked !== endState) { 						cbs[i].click(); 					} 				} 			} 		} 		lastCheckbox = thisCb; 		return true; 	}  	$(jQuerySelector, jQueryContext).click(clickHandler); };  /* **************** Morebits.batchOperation **************** */ /**  * Iterates over a group of pages (or arbitrary objects) and executes a worker function  * for each.  *  * `setPageList(pageList)`: Sets the list of pages to work on. It should be an  * array of page names strings.  *  * `setOption(optionName, optionValue)`: Sets a known option:  * - `chunkSize` (integer): The size of chunks to break the array into (default  * 50). Setting this to a small value (<5) can cause problems.  * - `preserveIndividualStatusLines` (boolean): Keep each page's status element  * visible when worker is complete? See note below.  *  * `run(worker, postFinish)`: Runs the callback `worker` for each page in the  * list.  The callback must call `workerSuccess` when succeeding, or  * `workerFailure` when failing.  If using {@link Morebits.wiki.api} or  * {@link Morebits.wiki.page}, this is easily done by passing these two  * functions as parameters to the methods on those objects: for instance,  * `page.save(batchOp.workerSuccess, batchOp.workerFailure)`.  Make sure the  * methods are called directly if special success/failure cases arise.  If you  * omit to call these methods, the batch operation will stall after the first  * chunk!  Also ensure that either workerSuccess or workerFailure is called no  * more than once.  The second callback `postFinish` is executed when the  * entire batch has been processed.  *  * If using `preserveIndividualStatusLines`, you should try to ensure that the  * `workerSuccess` callback has access to the page title.  This is no problem for  * {@link Morebits.wiki.page} objects.  But when using the API, please set the  * |pageName| property on the {@link Morebits.wiki.api} object.  *  * There are sample batchOperation implementations using Morebits.wiki.page in  * twinklebatchdelete.js, twinklebatchundelete.js, and twinklebatchprotect.js.  *  * @memberof Morebits  * @class  * @param {string} [currentAction]  */ Morebits.batchOperation = function(currentAction) { 	var ctx = { 		// backing fields for public properties 		pageList: null, 		options: { 			chunkSize: 50, 			preserveIndividualStatusLines: false 		},  		// internal counters, etc. 		statusElement: new Morebits.status(currentAction || msg('batch-starting', 'Performing batch operation')), 		worker: null, // function that executes for each item in pageList 		postFinish: null, // function that executes when the whole batch has been processed 		countStarted: 0, 		countFinished: 0, 		countFinishedSuccess: 0, 		currentChunkIndex: -1, 		pageChunks: [], 		running: false 	};  	// shouldn't be needed by external users, but provided anyway for maximum flexibility 	this.getStatusElement = function() { 		return ctx.statusElement; 	};  	/** 	 * Sets the list of pages to work on. 	 * 	 * @param {Array} pageList - Array of objects over which you wish to execute the worker function 	 * This is usually the list of page names (strings). 	 */ 	this.setPageList = function(pageList) { 		ctx.pageList = pageList; 	};  	/** 	 * Sets a known option. 	 * 	 * @param {string} optionName - Name of the option: 	 * - chunkSize (integer): The size of chunks to break the array into 	 * (default 50). Setting this to a small value (<5) can cause problems. 	 * - preserveIndividualStatusLines (boolean): Keep each page's status 	 * element visible when worker is complete? 	 * @param {number|boolean} optionValue - Value to which the option is 	 * to be set. Should be an integer for chunkSize and a boolean for 	 * preserveIndividualStatusLines. 	 */ 	this.setOption = function(optionName, optionValue) { 		ctx.options[optionName] = optionValue; 	};  	/** 	 * Runs the first callback for each page in the list. 	 * The callback must call workerSuccess when succeeding, or workerFailure when failing. 	 * Runs the optional second callback when the whole batch has been processed. 	 * 	 * @param {Function} worker 	 * @param {Function} [postFinish] 	 */ 	this.run = function(worker, postFinish) { 		if (ctx.running) { 			ctx.statusElement.error('Batch operation is already running'); 			return; 		} 		ctx.running = true;  		ctx.worker = worker; 		ctx.postFinish = postFinish; 		ctx.countStarted = 0; 		ctx.countFinished = 0; 		ctx.countFinishedSuccess = 0; 		ctx.currentChunkIndex = -1; 		ctx.pageChunks = [];  		var total = ctx.pageList.length; 		if (!total) { 			ctx.statusElement.info(msg('batch-no-pages', 'no pages specified')); 			ctx.running = false; 			if (ctx.postFinish) { 				ctx.postFinish(); 			} 			return; 		}  		// chunk page list into more manageable units 		ctx.pageChunks = Morebits.array.chunk(ctx.pageList, ctx.options.chunkSize);  		// start the process 		Morebits.wiki.addCheckpoint(); 		ctx.statusElement.status('০%'); 		fnStartNewChunk(); 	};  	/** 	 * To be called by worker before it terminates successfully. 	 * 	 * @param {(Morebits.wiki.page|Morebits.wiki.api|string)} arg - 	 * This should be the `Morebits.wiki.page` or `Morebits.wiki.api` object used by worker 	 * (for the adjustment of status lines emitted by them). 	 * If no Morebits.wiki.* object is used (e.g. you're using `mw.Api()` or something else), and 	 * `preserveIndividualStatusLines` option is on, give the page name (string) as argument. 	 */ 	this.workerSuccess = function(arg) {  		if (arg instanceof Morebits.wiki.api || arg instanceof Morebits.wiki.page) { 			// update or remove status line 			var statelem = arg.getStatusElement(); 			if (ctx.options.preserveIndividualStatusLines) { 				if (arg.getPageName || arg.pageName || (arg.query && arg.query.title)) { 					// we know the page title - display a relevant message 					var pageName = arg.getPageName ? arg.getPageName() : arg.pageName || arg.query.title; 					statelem.info(msg('batch-done-page', pageName, 'সম্পন্ন ([[' + pageName + ']])')); 				} else { 					// we don't know the page title - just display a generic message 					statelem.info(msg('done', 'করা হয়েছে')); 				} 			} else { 				// remove the status line automatically produced by Morebits.wiki.* 				statelem.unlink(); 			}  		} else if (typeof arg === 'string' && ctx.options.preserveIndividualStatusLines) { 			new Morebits.status(arg, msg('batch-done-page', arg, 'সম্পন্ন ([[' + arg + ']])')); 		}  		ctx.countFinishedSuccess++; 		fnDoneOne(); 	};  	this.workerFailure = function() { 		fnDoneOne(); 	};  	// private functions  	var thisProxy = this;  	var fnStartNewChunk = function() { 		var chunk = ctx.pageChunks[++ctx.currentChunkIndex]; 		if (!chunk) { 			return;  // done! yay 		}  		// start workers for the current chunk 		ctx.countStarted += chunk.length; 		chunk.forEach(function(page) { 			ctx.worker(page, thisProxy); 		}); 	};  	var fnDoneOne = function() { 		ctx.countFinished++;  		// update overall status line 		var total = ctx.pageList.length; 		if (ctx.countFinished < total) { 			var progress = Math.round(100 * ctx.countFinished / total); 			ctx.statusElement.status(msg('percent', progress, progress + '%'));  			// start a new chunk if we're close enough to the end of the previous chunk, and 			// we haven't already started the next one 			if (ctx.countFinished >= (ctx.countStarted - Math.max(ctx.options.chunkSize / 10, 2)) && 				Math.floor(ctx.countFinished / ctx.options.chunkSize) > ctx.currentChunkIndex) { 				fnStartNewChunk(); 			} 		} else if (ctx.countFinished === total) { 			var statusString = msg('batch-progress', ctx.countFinishedSuccess, ctx.countFinished, 'করা হয়েছে (' + ctx.countFinishedSuccess + 				'/' + ctx.countFinished + ' actions completed successfully)'); 			if (ctx.countFinishedSuccess < ctx.countFinished) { 				ctx.statusElement.warn(statusString); 			} else { 				ctx.statusElement.info(statusString); 			} 			if (ctx.postFinish) { 				ctx.postFinish(); 			} 			Morebits.wiki.removeCheckpoint(); 			ctx.running = false; 		} else { 			// ctx.countFinished > total 			// just for giggles! (well, serious debugging, actually) 			ctx.statusElement.warn('Done (overshot by ' + (ctx.countFinished - total) + ')'); 			Morebits.wiki.removeCheckpoint(); 			ctx.running = false; 		} 	}; };  /**  * Given a set of asynchronous functions to run along with their dependencies,  * run them in an efficient sequence so that multiple functions  * that don't depend on each other are triggered simultaneously. Where  * dependencies exist, it ensures that the dependency functions finish running  * before the dependent function runs. The values resolved by the dependencies  * are made available to the dependant as arguments.  *  * @memberof Morebits  * @class  */ Morebits.taskManager = function(context) { 	this.taskDependencyMap = new Map(); 	this.failureCallbackMap = new Map(); 	this.deferreds = new Map(); 	this.allDeferreds = []; // Hack: IE doesn't support Map.prototype.values 	this.context = context || window;  	/** 	 * Register a task along with its dependencies (tasks which should have finished 	 * execution before we can begin this one). Each task is a function that must return 	 * a promise. The function will get the values resolved by the dependency functions 	 * as arguments. 	 * 	 * @param {Function} func - A task. 	 * @param {Function[]} deps - Its dependencies. 	 * @param {Function} [onFailure] - a failure callback that's run if the task or any one 	 * of its dependencies fail. 	 */ 	this.add = function(func, deps, onFailure) { 		this.taskDependencyMap.set(func, deps); 		this.failureCallbackMap.set(func, onFailure || function() {}); 		var deferred = $.Deferred(); 		this.deferreds.set(func, deferred); 		this.allDeferreds.push(deferred); 	};  	/** 	 * Run all the tasks. Multiple tasks may be run at once. 	 * 	 * @returns {jQuery.Promise} - Resolved if all tasks succeed, rejected otherwise. 	 */ 	this.execute = function() { 		var self = this; // proxy for `this` for use inside functions where `this` is something else 		this.taskDependencyMap.forEach(function(deps, task) { 			var dependencyPromisesArray = deps.map(function(dep) { 				return self.deferreds.get(dep); 			}); 			$.when.apply(self.context, dependencyPromisesArray).then(function() { 				var result = task.apply(self.context, arguments); 				if (result === undefined) { // maybe the function threw, or it didn't return anything 					mw.log.error('Morebits.taskManager: task returned undefined'); 					self.deferreds.get(task).reject.apply(self.context, arguments); 					self.failureCallbackMap.get(task).apply(self.context, []); 				} 				result.then(function() { 					self.deferreds.get(task).resolve.apply(self.context, arguments); 				}, function() { // task failed 					self.deferreds.get(task).reject.apply(self.context, arguments); 					self.failureCallbackMap.get(task).apply(self.context, arguments); 				}); 			}, function() { // one or more of the dependencies failed 				self.failureCallbackMap.get(task).apply(self.context, arguments); 			}); 		}); 		return $.when.apply(null, this.allDeferreds); // resolved when everything is done! 	};  };  /**  * A simple draggable window, now a wrapper for jQuery UI's dialog feature.  *  * @memberof Morebits  * @class  * @requires jquery.ui.dialog  * @param {number} width  * @param {number} height - The maximum allowable height for the content area.  */ Morebits.simpleWindow = function SimpleWindow(width, height) { 	var content = document.createElement('div'); 	this.content = content; 	content.className = 'morebits-dialog-content'; 	content.id = 'morebits-dialog-content-' + Math.round(Math.random() * 1e15);  	this.height = height;  	$(this.content).dialog({ 		autoOpen: false, 		buttons: { 'Placeholder button': function() {} }, 		dialogClass: 'morebits-dialog', 		width: Math.min(parseInt(window.innerWidth, 10), parseInt(width ? width : 800, 10)), 		// give jQuery the given height value (which represents the anticipated height of the dialog) here, so 		// it can position the dialog appropriately 		// the 20 pixels represents adjustment for the extra height of the jQuery dialog "chrome", compared 		// to that of the old SimpleWindow 		height: height + 20, 		close: function(event) { 			// dialogs and their content can be destroyed once closed 			$(event.target).dialog('destroy').remove(); 		}, 		resizeStart: function() { 			this.scrollbox = $(this).find('.morebits-scrollbox')[0]; 			if (this.scrollbox) { 				this.scrollbox.style.maxHeight = 'none'; 			} 		}, 		resizeStop: function() { 			this.scrollbox = null; 		}, 		resize: function() { 			this.style.maxHeight = ''; 			if (this.scrollbox) { 				this.scrollbox.style.width = ''; 			} 		} 	});  	var $widget = $(this.content).dialog('widget');  	// delete the placeholder button (it's only there so the buttonpane gets created) 	$widget.find('button').each(function(key, value) { 		value.parentNode.removeChild(value); 	});  	// add container for the buttons we add, and the footer links (if any) 	var buttonspan = document.createElement('span'); 	buttonspan.className = 'morebits-dialog-buttons'; 	var linksspan = document.createElement('span'); 	linksspan.className = 'morebits-dialog-footerlinks'; 	$widget.find('.ui-dialog-buttonpane').append(buttonspan, linksspan);  	// resize the scrollbox with the dialog, if one is present 	$widget.resizable('option', 'alsoResize', '#' + this.content.id + ' .morebits-scrollbox, #' + this.content.id); };  Morebits.simpleWindow.prototype = { 	buttons: [], 	height: 600, 	hasFooterLinks: false, 	scriptName: null,  	/** 	 * Focuses the dialog. This might work, or on the contrary, it might not. 	 * 	 * @returns {Morebits.simpleWindow} 	 */ 	focus: function() { 		$(this.content).dialog('moveToTop'); 		return this; 	},  	/** 	 * Closes the dialog. If this is set as an event handler, it will stop the event 	 * from doing anything more. 	 * 	 * @param {event} [event] 	 * @returns {Morebits.simpleWindow} 	 */ 	close: function(event) { 		if (event) { 			event.preventDefault(); 		} 		$(this.content).dialog('close'); 		return this; 	},  	/** 	 * Shows the dialog. Calling display() on a dialog that has previously been closed 	 * might work, but it is not guaranteed. 	 * 	 * @returns {Morebits.simpleWindow} 	 */ 	display: function() { 		if (this.scriptName) { 			var $widget = $(this.content).dialog('widget'); 			$widget.find('.morebits-dialog-scriptname').remove(); 			var scriptnamespan = document.createElement('span'); 			scriptnamespan.className = 'morebits-dialog-scriptname'; 			scriptnamespan.textContent = this.scriptName + ' \u00B7 ';  // U+00B7 MIDDLE DOT = · 			$widget.find('.ui-dialog-title').prepend(scriptnamespan); 		}  		var dialog = $(this.content).dialog('open'); 		if (window.setupTooltips && window.pg && window.pg.re && window.pg.re.diff) {  // tie in with NAVPOP 			dialog.parent()[0].ranSetupTooltipsAlready = false; 			window.setupTooltips(dialog.parent()[0]); 		} 		this.setHeight(this.height);  // init height algorithm 		return this; 	},  	/** 	 * Sets the dialog title. 	 * 	 * @param {string} title 	 * @returns {Morebits.simpleWindow} 	 */ 	setTitle: function(title) { 		$(this.content).dialog('option', 'title', title); 		return this; 	},  	/** 	 * Sets the script name, appearing as a prefix to the title to help users determine which 	 * user script is producing which dialog. For instance, Twinkle modules set this to "Twinkle". 	 * 	 * @param {string} name 	 * @returns {Morebits.simpleWindow} 	 */ 	setScriptName: function(name) { 		this.scriptName = name; 		return this; 	},  	/** 	 * Sets the dialog width. 	 * 	 * @param {number} width 	 * @returns {Morebits.simpleWindow} 	 */ 	setWidth: function(width) { 		$(this.content).dialog('option', 'width', width); 		return this; 	},  	/** 	 * Sets the dialog's maximum height. The dialog will auto-size to fit its contents, 	 * but the content area will grow no larger than the height given here. 	 * 	 * @param {number} height 	 * @returns {Morebits.simpleWindow} 	 */ 	setHeight: function(height) { 		this.height = height;  		// from display time onwards, let the browser determine the optimum height, 		// and instead limit the height at the given value 		// note that the given height will exclude the approx. 20px that the jQuery UI 		// chrome has in height in addition to the height of an equivalent "classic" 		// Morebits.simpleWindow 		if (parseInt(getComputedStyle($(this.content).dialog('widget')[0], null).height, 10) > window.innerHeight) { 			$(this.content).dialog('option', 'height', window.innerHeight - 2).dialog('option', 'position', 'top'); 		} else { 			$(this.content).dialog('option', 'height', 'auto'); 		} 		$(this.content).dialog('widget').find('.morebits-dialog-content')[0].style.maxHeight = parseInt(this.height - 30, 10) + 'px'; 		return this; 	},  	/** 	 * Sets the content of the dialog to the given element node, usually from rendering 	 * a {@link Morebits.quickForm}. 	 * Re-enumerates the footer buttons, but leaves the footer links as they are. 	 * Be sure to call this at least once before the dialog is displayed... 	 * 	 * @param {HTMLElement} content 	 * @returns {Morebits.simpleWindow} 	 */ 	setContent: function(content) { 		this.purgeContent(); 		this.addContent(content); 		return this; 	},  	/** 	 * Adds the given element node to the dialog content. 	 * 	 * @param {HTMLElement} content 	 * @returns {Morebits.simpleWindow} 	 */ 	addContent: function(content) { 		this.content.appendChild(content);  		// look for submit buttons in the content, hide them, and add a proxy button to the button pane 		var thisproxy = this; 		$(this.content).find('input[type="submit"], button[type="submit"]').each(function(key, value) { 			value.style.display = 'none'; 			var button = document.createElement('button'); 			button.textContent = value.hasAttribute('value') ? value.getAttribute('value') : value.textContent ? value.textContent : msg('submit', 'জমা দিন'); 			button.className = value.className || 'submitButtonProxy'; 			// here is an instance of cheap coding, probably a memory-usage hit in using a closure here 			button.addEventListener('click', function() { 				value.click(); 			}, false); 			thisproxy.buttons.push(button); 		}); 		// remove all buttons from the button pane and re-add them 		if (this.buttons.length > 0) { 			$(this.content).dialog('widget').find('.morebits-dialog-buttons').empty().append(this.buttons)[0].removeAttribute('data-empty'); 		} else { 			$(this.content).dialog('widget').find('.morebits-dialog-buttons')[0].setAttribute('data-empty', 'data-empty');  // used by CSS 		} 		return this; 	},  	/** 	 * Removes all contents from the dialog, barring any footer links. 	 * 	 * @returns {Morebits.simpleWindow} 	 */ 	purgeContent: function() { 		this.buttons = []; 		// delete all buttons in the buttonpane 		$(this.content).dialog('widget').find('.morebits-dialog-buttons').empty();  		while (this.content.hasChildNodes()) { 			this.content.removeChild(this.content.firstChild); 		} 		return this; 	},  	/** 	 * Adds a link in the bottom-right corner of the dialog. 	 * This can be used to provide help or policy links. 	 * For example, Twinkle's CSD module adds a link to the CSD policy page, 	 * as well as a link to Twinkle's documentation. 	 * 	 * @param {string} text - Display text. 	 * @param {string} wikiPage - Link target. 	 * @param {boolean} [prep=false] - Set true to prepend rather than append. 	 * @returns {Morebits.simpleWindow} 	 */ 	addFooterLink: function(text, wikiPage, prep) { 		var $footerlinks = $(this.content).dialog('widget').find('.morebits-dialog-footerlinks'); 		if (this.hasFooterLinks) { 			var bullet = document.createElement('span'); 			bullet.textContent = msg('bullet-separator', ' \u2022 ');  // U+2022 BULLET 			if (prep) { 				$footerlinks.prepend(bullet); 			} else { 				$footerlinks.append(bullet); 			} 		} 		var link = document.createElement('a'); 		link.setAttribute('href', mw.util.getUrl(wikiPage)); 		link.setAttribute('title', wikiPage); 		link.setAttribute('target', '_blank'); 		link.textContent = text; 		if (prep) { 			$footerlinks.prepend(link); 		} else { 			$footerlinks.append(link); 		} 		this.hasFooterLinks = true; 		return this; 	},  	/** 	 * Sets whether the window should be modal or not. Modal dialogs create 	 * an overlay below the dialog but above other page elements. This 	 * must be used (if necessary) before calling display(). 	 * 	 * @param {boolean} [modal=false] - If set to true, other items on the 	 * page will be disabled, i.e., cannot be interacted with. 	 * @returns {Morebits.simpleWindow} 	 */ 	setModality: function(modal) { 		$(this.content).dialog('option', 'modal', modal); 		return this; 	} };  /**  * Enables or disables all footer buttons on all {@link Morebits.simpleWindow}s in the current page.  * This should be called with `false` when the button(s) become irrelevant (e.g. just before  * {@link Morebits.status.init} is called).  * This is not an instance method so that consumers don't have to keep a reference to the  * original `Morebits.simpleWindow` object sitting around somewhere. Anyway, most of the time  * there will only be one `Morebits.simpleWindow` open, so this shouldn't matter.  *  * @memberof Morebits.simpleWindow  * @param {boolean} enabled  */ Morebits.simpleWindow.setButtonsEnabled = function(enabled) { 	$('.morebits-dialog-buttons button').prop('disabled', !enabled); };  }(window, document, jQuery)); // End wrap with anonymous function  /**  * If this script is being executed outside a ResourceLoader context, we add some  * global assignments for legacy scripts, hopefully these can be removed down the line.  *  * IMPORTANT NOTE:  * PLEASE DO NOT USE THESE ALIASES IN NEW CODE!  * Thanks.  */  if (typeof arguments === 'undefined') {  // typeof is here for a reason... 	/* global Morebits */ 	window.SimpleWindow = Morebits.simpleWindow; 	window.QuickForm = Morebits.quickForm; 	window.Wikipedia = Morebits.wiki; 	window.Status = Morebits.status; }  //