DDNerd
Autor: Rodrigo | Publicado: 2012-04-14T14:36:00-07:00

// SpryTabbedPanels.js - version 0.6 - Spry Pre-Release 1.6.1//// Copyright (c) 2006. Adobe Systems Incorporated.// All rights reserved.//// Redistribution and use in source and binary forms, with or without// modification, are permitted provided that the following conditions are met:var Spry;if (!Spry) Spry = {};if (!Spry.Widget) Spry.Widget = {};Spry.Widget.TabbedPanels = function(element, opts){ this.element = this.getElement(element); this.defaultTab = 0; // Show the first panel by default. this.tabSelectedClass = "TabbedPanelsTabSelected"; this.tabHoverClass = "TabbedPanelsTabHover"; this.tabFocusedClass = "TabbedPanelsTabFocused"; this.panelVisibleClass = "TabbedPanelsContentVisible"; this.focusElement = null; this.hasFocus = false; this.currentTabIndex = 0; this.enableKeyboardNavigation = true; this.nextPanelKeyCode = Spry.Widget.TabbedPanels.KEY_RIGHT; this.previousPanelKeyCode = Spry.Widget.TabbedPanels.KEY_LEFT; Spry.Widget.TabbedPanels.setOptions(this, opts); // If the defaultTab is expressed as a number/index, convert // it to an element. if (typeof (this.defaultTab) == "number") {  if (this.defaultTab < 0)   this.defaultTab = 0;  else  {   var count = this.getTabbedPanelCount();   if (this.defaultTab >= count)    this.defaultTab = (count > 1) ? (count - 1) : 0;  }  this.defaultTab = this.getTabs()[this.defaultTab]; } // The defaultTab property is supposed to be the tab element for the tab content // to show by default. The caller is allowed to pass in the element itself or the // element's id, so we need to convert the current value to an element if necessary. if (this.defaultTab)  this.defaultTab = this.getElement(this.defaultTab); this.attachBehaviors();};Spry.Widget.TabbedPanels.prototype.getElement = function(ele){ if (ele && typeof ele == "string")  return document.getElementById(ele); return ele;};Spry.Widget.TabbedPanels.prototype.getElementChildren = function(element){ var children = []; var child = element.firstChild; while (child) {  if (child.nodeType == 1 /* Node.ELEMENT_NODE */)   children.push(child);  child = child.nextSibling; } return children;};Spry.Widget.TabbedPanels.prototype.addClassName = function(ele, className){ if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))  return; ele.className += (ele.className ? " " : "") + className;};Spry.Widget.TabbedPanels.prototype.removeClassName = function(ele, className){ if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))  return; ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");};Spry.Widget.TabbedPanels.setOptions = function(obj, optionsObj, ignoreUndefinedProps){ if (!optionsObj)  return; for (var optionName in optionsObj) {  if (ignoreUndefinedProps && optionsObj[optionName] == undefined)   continue;  obj[optionName] = optionsObj[optionName]; }};Spry.Widget.TabbedPanels.prototype.getTabGroup = function(){ if (this.element) {  var children = this.getElementChildren(this.element);  if (children.length)   return children[0]; } return null;};Spry.Widget.TabbedPanels.prototype.getTabs = function(){ var tabs = []; var tg = this.getTabGroup(); if (tg)  tabs = this.getElementChildren(tg); return tabs;};Spry.Widget.TabbedPanels.prototype.getContentPanelGroup = function(){ if (this.element) {  var children = this.getElementChildren(this.element);  if (children.length > 1)   return children[1]; } return null;};Spry.Widget.TabbedPanels.prototype.getContentPanels = function(){ var panels = []; var pg = this.getContentPanelGroup(); if (pg)  panels = this.getElementChildren(pg); return panels;};Spry.Widget.TabbedPanels.prototype.getIndex = function(ele, arr){ ele = this.getElement(ele); if (ele && arr && arr.length) {  for (var i = 0; i < arr.length; i++)  {   if (ele == arr[i])    return i;  } } return -1;};Spry.Widget.TabbedPanels.prototype.getTabIndex = function(ele){ var i = this.getIndex(ele, this.getTabs()); if (i < 0)  i = this.getIndex(ele, this.getContentPanels()); return i;};Spry.Widget.TabbedPanels.prototype.getCurrentTabIndex = function(){ return this.currentTabIndex;};Spry.Widget.TabbedPanels.prototype.getTabbedPanelCount = function(ele){ return Math.min(this.getTabs().length, this.getContentPanels().length);};Spry.Widget.TabbedPanels.addEventListener = function(element, eventType, handler, capture){ try {  if (element.addEventListener)   element.addEventListener(eventType, handler, capture);  else if (element.attachEvent)   element.attachEvent("on" + eventType, handler); } catch (e) {}};Spry.Widget.TabbedPanels.prototype.cancelEvent = function(e){ if (e.preventDefault) e.preventDefault(); else e.returnValue = false; if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true; return false;};Spry.Widget.TabbedPanels.prototype.onTabClick = function(e, tab){ this.showPanel(tab); return this.cancelEvent(e);};Spry.Widget.TabbedPanels.prototype.onTabMouseOver = function(e, tab){ this.addClassName(tab, this.tabHoverClass); return false;};Spry.Widget.TabbedPanels.prototype.onTabMouseOut = function(e, tab){ this.removeClassName(tab, this.tabHoverClass); return false;};Spry.Widget.TabbedPanels.prototype.onTabFocus = function(e, tab){ this.hasFocus = true; this.addClassName(tab, this.tabFocusedClass); return false;};Spry.Widget.TabbedPanels.prototype.onTabBlur = function(e, tab){ this.hasFocus = false; this.removeClassName(tab, this.tabFocusedClass); return false;};Spry.Widget.TabbedPanels.KEY_UP = 38;Spry.Widget.TabbedPanels.KEY_DOWN = 40;Spry.Widget.TabbedPanels.KEY_LEFT = 37;Spry.Widget.TabbedPanels.KEY_RIGHT = 39;Spry.Widget.TabbedPanels.prototype.onTabKeyDown = function(e, tab){ var key = e.keyCode; if (!this.hasFocus || (key != this.previousPanelKeyCode && key != this.nextPanelKeyCode))  return true; var tabs = this.getTabs(); for (var i =0; i < tabs.length; i++)  if (tabs[i] == tab)  {   var el = false;   if (key == this.previousPanelKeyCode && i > 0)    el = tabs[i-1];   else if (key == this.nextPanelKeyCode && i < tabs.length-1)    el = tabs[i+1];   if (el)   {    this.showPanel(el);    el.focus();    break;   }  } return this.cancelEvent(e);};Spry.Widget.TabbedPanels.prototype.preorderTraversal = function(root, func){ var stopTraversal = false; if (root) {  stopTraversal = func(root);  if (root.hasChildNodes())  {   var child = root.firstChild;   while (!stopTraversal && child)   {    stopTraversal = this.preorderTraversal(child, func);    try { child = child.nextSibling; } catch (e) { child = null; }   }  } } return stopTraversal;};Spry.Widget.TabbedPanels.prototype.addPanelEventListeners = function(tab, panel){ var self = this; Spry.Widget.TabbedPanels.addEventListener(tab, "click", function(e) { return self.onTabClick(e, tab); }, false); Spry.Widget.TabbedPanels.addEventListener(tab, "mouseover", function(e) { return self.onTabMouseOver(e, tab); }, false); Spry.Widget.TabbedPanels.addEventListener(tab, "mouseout", function(e) { return self.onTabMouseOut(e, tab); }, false); if (this.enableKeyboardNavigation) {  // XXX: IE doesn't allow the setting of tabindex dynamically. This means we can't  // rely on adding the tabindex attribute if it is missing to enable keyboard navigation  // by default.  // Find the first element within the tab container that has a tabindex or the first  // anchor tag.    var tabIndexEle = null;  var tabAnchorEle = null;  this.preorderTraversal(tab, function(node) {   if (node.nodeType == 1 /* NODE.ELEMENT_NODE */)   {    var tabIndexAttr = tab.attributes.getNamedItem("tabindex");    if (tabIndexAttr)    {     tabIndexEle = node;     return true;    }    if (!tabAnchorEle && node.nodeName.toLowerCase() == "a")     tabAnchorEle = node;   }   return false;  });  if (tabIndexEle)   this.focusElement = tabIndexEle;  else if (tabAnchorEle)   this.focusElement = tabAnchorEle;  if (this.focusElement)  {   Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "focus", function(e) { return self.onTabFocus(e, tab); }, false);   Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "blur", function(e) { return self.onTabBlur(e, tab); }, false);   Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "keydown", function(e) { return self.onTabKeyDown(e, tab); }, false);  } }};Spry.Widget.TabbedPanels.prototype.showPanel = function(elementOrIndex){ var tpIndex = -1;  if (typeof elementOrIndex == "number")  tpIndex = elementOrIndex; else // Must be the element for the tab or content panel.  tpIndex = this.getTabIndex(elementOrIndex);  if (!tpIndex < 0 || tpIndex >= this.getTabbedPanelCount())  return; var tabs = this.getTabs(); var panels = this.getContentPanels(); var numTabbedPanels = Math.max(tabs.length, panels.length); for (var i = 0; i < numTabbedPanels; i++) {  if (i != tpIndex)  {   if (tabs[i])    this.removeClassName(tabs[i], this.tabSelectedClass);   if (panels[i])   {    this.removeClassName(panels[i], this.panelVisibleClass);    panels[i].style.display = "none";   }  } } this.addClassName(tabs[tpIndex], this.tabSelectedClass); this.addClassName(panels[tpIndex], this.panelVisibleClass); panels[tpIndex].style.display = "block"; this.currentTabIndex = tpIndex;};Spry.Widget.TabbedPanels.prototype.attachBehaviors = function(element){ var tabs = this.getTabs(); var panels = this.getContentPanels(); var panelCount = this.getTabbedPanelCount(); for (var i = 0; i < panelCount; i++)  this.addPanelEventListeners(tabs[i], panels[i]); this.showPanel(this.defaultTab);};