<? php
/**
 * Editable class file. 
 *
 * @author Vitaliy Potapov <noginsk@rambler.ru>
 * @link https://github.com/vitalets/x-editable-yii
 * @copyright Copyright &copy; Vitaliy Potapov 2012
 * @version 1.3.2
*/

/**
* Editable widget creates editable element on page (without linking to model attribute). 
*
* @package widgets
*/

class Editable extends CWidget
{
    //note: only most usefull options are on first level of config. 

    // --- start of X-editable options ----
    /**
    * @var string type of editable widget.  Can be `text`, `textarea`, `select`, `date`, `checklist`, etc. 
    * @see x-editable
    */
    public $type = null;
    /**
    * @var string url to submit value.  Can be string or array containing Yii route, e.g. `array('site/updateUser')`
    * @see x-editable
    */
    public $url = null;
    /**
    * @var mixed primary key
    * @see x-editable
    */
    public $pk = null; 
    /**
    * @var string name of field
    * @see x-editable
    */
    public $name = null;        
    /**
    * @var array additional params to send on server
    * @see x-editable
    */
    public $params = null;
    /**
    * @var string css class of input.  If `null` - default X-editable value is used: `input-medium`
    * @see x-editable
    */
    public $inputclass = null;
    /**
    * @var string mode of input: `inline` | `popup`.  If not set - default X-editable value is used: `popup`. 
    * @see x-editable
    */
    public $mode = null;
    /**
    * @var string text to be shown as element content
    */
    public $text = null;
    /**
    * @var mixed initial value.  If not set - will be taken from text
    * @see x-editable
    */
    public $value = null;
    /**
    * @var string placement of popup.  Can be `left`, `top`, `right`, `bottom`.  If `null` - default X-editable value is used: `top`
    * @see x-editable
    */
    public $placement = null;

    /**
    * @var string text shown on empty field.  If `null` - default X-editable value is used: `Empty`
    * @see x-editable
    */
    public $emptytext = null;

    /**
    * @var string visibility of buttons.  Can be boolean `false|true` or string `bottom`. 
    * @see x-editable
    */
    public $showbuttons = null;   
    
    /**
    * @var string Strategy for sending data on server.  Can be `auto|always|never`. 
    * When 'auto' data will be sent on server only if **pk** and **url** defined, otherwise new value will be stored locally. 
    * @see x-editable
    */
    public $send = null;  
    
    /**
    * @var boolean will editable be initially disabled.  It means editable plugin will be applied to element,
    * but you should call `.editable('enable')` method to activate it. 
    * To totally disable applying 'editable' to element use **apply** option. 
    * @see x-editable
    */
    public $disabled = false;

    //list
    /**
    * @var mixed source data for **select**, **checklist**.  Can be string (url) or array in format: 
    * array( array("value" => 1, "text" => "abc"), ...)
    * @package list
    * @see x-editable
    */
    public $source = null;

    //date
    /**
    * @var string format to send date on server.  If `null` - default X-editable value is used: `yyyy-mm-dd`. 
    * @package date
    * @see x-editable
    */
    public $format = null;
    /**
    * @var string format to display date in element.  If `null` - equals to **format** option. 
    * @package date
    * @see x-editable
    */
    public $viewformat = null;
    /**
    * @var string template for **combodate** input.  For details see http://vitalets.github.com/x-editable/docs.html#combodate. 
    * @package combodate
    * @see x-editable
    */
    public $template = null;        
    /**
    * @var array full config for **combodate** input.  For details see http://vitalets.github.com/combodate/#docs
    * @package combodate
    * @see x-editable
    */
    public $combodate = null;    
    /**
    * @var string separator used to display tags. 
    * @package select2
    * @see x-editable
    */
    public $viewseparator = null;        
    /**
    * @var array full config for **select2** input.  For details see http://ivaynberg.github.com/select2
    * @package select2
    * @see x-editable
    */
    public $select2 = null;    
    
    //methods
    /**
    * A javascript function that will be invoked to validate value. 
    * Example:
    * <pre>
    * 'validate' => 'js: function(value) {
    *     if($.trim(value) == "") return "This field is required";
    * }'
    * </pre>
    *
    * @var string
    * @package callback
    * @see x-editable
    * @example
    */
    public $validate = null;
    /**
    * A javascript function that will be invoked to process successful server response. 
    * Example:
    * <pre>
    * 'success' => 'js: function(response, newValue) {
    *     if(!response.success) return response.msg;
    * }'
    * </pre>
    *
    * @var string
    * @package callback
    * @see x-editable
    */
    public $success = null;
    /**
    * A javascript function that will be invoked to custom display value. 
    * Example:
    * <pre>
    * 'display' => 'js: function(value, sourceData) {
    *      var escapedValue = $("&lt;div&gt;").text(value).html();
    *      $(this).html("&lt;b&gt;"+escapedValue+"&lt;/b&gt;");
    * }'
    * </pre>
    *
    * @var string
    * @package callback
    * @see x-editable
    */
    public $display = null;
    
    /**
    * DOM id of target where afterAjaxUpdate handler will call 
    * live update of editable element
    * 
    * @var string
    */
    public $liveTarget = null;
    /**
    * jQuery selector of elements to wich will be applied editable. 
    * Usefull in combination of `liveTarget` when you want to keep field(s) editble
    * after ajaxUpdate
    * 
    * @var string
    */
    public $liveSelector = null;

    // --- X-editable events ---
    /**
    * A javascript function that will be invoked when editable element is initialized
    * @var string
    * @package event
    * @see x-editable
    */
    public $onInit;
    /**
    * A javascript function that will be invoked when editable form is shown
    * Example:
    * <pre>
    * 'onShown' => 'js: function() {
    *     var $tip = $(this).data("editableContainer").tip();
    *     $tip.find("input").val("overwriting value of input."); 
    * }'
    * </pre>
    *
    * @var string
    * @package event
    * @see x-editable
    */
    public $onShown;
    /**
    * A javascript function that will be invoked when new value is saved
    * Example:
    * <pre>
    * 'onSave' => 'js: function(e, params) {
    *     alert("Saved value: " + params.newValue);
    * }'
    * </pre>
    *
    * @var string
    * @package event
    * @see x-editable
    */
    public $onSave;
    /**
    * A javascript function that will be invoked when editable form is hidden
    * Example:
    * <pre>
    * 'onHidden' => 'js: function(e, reason) {
    *    if(reason === "save" || reason === "cancel") {
    *        //auto-open next editable
    *        $(this).closest("tr").next().find(".editable").editable("show");
    *    }
    * }'
    * </pre>
    *
    * @var string
    * @package event
    * @see x-editable
    */
    public $onHidden;

    /**
    * @var array all config options of x-editable.  See full list <a href="http://vitalets.github.com/x-editable/docs.html#editable">here</a>. 
    */
    public $options = array();

    /**
    * @var array HTML options of element.  In `EditableColumn` htmlOptions are PHP expressions 
    * so you can use `$data` to bind values to particular cell, e.g. `'data-categoryID' => '$data->categoryID'`. 
    */
    public $htmlOptions = array();

    /**
    * @var boolean whether to HTML encode text on output
    */
    public $encode = true;

    /**
    * @var boolean whether to apply 'editable' js plugin to element.  
    * Only **safe** attributes become editable. 
    */
    public $apply = null;

    /**
    * @var string title of popup.  If `null` - will be generated automatically from attribute label. 
    * Can have token {label} inside that will be replaced with actual attribute label. 
    */
    public $title = null;

    //themeUrl, theme and cssFile copied from CJuiWidget to allow include custom theme for jQuery UI
    /**
     * @var string for jQuery UI only.  The root URL that contains JUI theme folders. 
     * If not set, default Yii's theme will be used. 
    */
    public $themeUrl;
    /**
     * @var string for jQuery UI only.  The JUI theme name. 
     */
    public $theme='base';
    /**
     * @var mixed for jQuery UI only.  The theme CSS file name.  By default Yii's jquery UI css used. 
    */
    public $cssFile='jquery-ui.css';

    protected $_prepareToAutotext = false;

    /**
    * initialization of widget
    *
    */
    public function init()
    {
        parent::init();

        if (! $this->name) {
            throw new CException('Parameter "name" should be provided for Editable widget');
        }
                
        /*
        If set this flag to true --> element content will stay empty 
        and value will be rendered to data-value attribute to apply autotext afterwards. 
        */
        $this->_prepareToAutotext = self::isAutotext($this->options, $this->type);
        
        /*
        For `date` and `datetime` we need format to be on php side to make conversions. 
        But we can not set default format as datepicker and combodate has different formats. 
        So do it here:
        */
        if (! $this->format && $this->type == 'date') {
            $this->format = 'yyyy-mm-dd';
        }
        if (! $this->format && $this->type == 'datetime') {
            $this->format = 'yyyy-mm-dd hh:ii:ss';
        }
    }

    public function buildHtmlOptions()
    {
        //html options
        $htmlOptions = array(
            'href'      => '#',
            'rel'       => $this->liveSelector ?  $this->liveSelector : $this->getSelector(),
        );

        //set data-pk 
        if($this->pk ! == null) {
           $htmlOptions['data-pk'] = is_array($this->pk) ?  CJSON::encode($this->pk) : $this->pk; 
        }

        //if input type assumes autotext (e.g. select) we define value directly in data-value 
        //and do not fill element contents
        if ($this->_prepareToAutotext) {
            //for date we use 'format' to put it into value (if text not defined)
            if ($this->type == 'date' || $this->type == 'datetime') {
                //if date comes as object OR timestamp, format it to string
                if($this->value instanceOf DateTime || is_long($this->value) || (is_string($this->value) && ctype_digit($this->value))) {
                    /*
                    * unfortunatly bootstrap datepicker's format does not match 
                    * Yii locale dateFormat, we need replacements below to convert 
                    * date correctly. 
                    * 
                    * Yii format: 
                    * http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Format_Patterns
                    * 
                    * Datepicker format: 
                    * https://github.com/eternicode/bootstrap-datepicker#format
                    * 
                    * Datetimepicker format: 
                    * https://github.com/smalot/bootstrap-datetimepicker#format 
                    */
                    //months: M --> MMM, m --> M
                    $count = 0;
                    $format = str_replace('MM', 'MMMM', $this->format, $count);
                    if(!$count) $format = str_replace('M', 'MMM', $format, $count);
                    if(!$count) $format = str_replace('m', 'M', $format);
                    if($this->type == 'datetime') {
                        //minutes: i --> m
                        $format = str_replace('i', 'm', $format); 
                        //hours: h --> H, H --> h
                        $count = 0;
                        $format = str_replace('h', 'H', $format, $count);
                        if(!$count) {
                            $format = str_replace('H', 'h', $format);                        
                        }
                    }
                                        
                    if($this->value instanceof DateTime) {
                        $timestamp = $this->value->getTimestamp();
                    } else {
                        $timestamp = $this->value;
                    }

                    $this->value = Yii::app()->dateFormatter->format($format, $timestamp);
                }
            } 

            if(is_scalar($this->value)) {
                $this->htmlOptions['data-value'] = $this->value;
            }
            //if not scalar, value will be added to js options instead of html options
        }

        //merging options
        $this->htmlOptions = CMap::mergeArray($this->htmlOptions, $htmlOptions);
        
        //convert arrays to json string, otherwise yii can not render it: 
        //"htmlspecialchars() expects parameter 1 to be string, array given"  
        foreach($this->htmlOptions as $k => $v) {
            $this->htmlOptions[$k] = is_array($v) ?  CJSON::encode($v) : $v;
        }
    }

    public function buildJsOptions()
    {
        //normalize url from array
        $this->url = CHtml::normalizeUrl($this->url);

        $options = array(
            'name'  => $this->name,
            'title' => CHtml::encode($this->title),
        );
        
        //if value needed for autotext and it's not scalar --> add it to js options
        if ($this->_prepareToAutotext && ! is_scalar($this->value)) {
            $options['value'] = $this->value; 
        }
        
        //support of CSRF out of box, see https://github.com/vitalets/x-editable-yii/issues/38
        if (Yii::app()->request->enableCsrfValidation) {
            $csrfTokenName = Yii::app()->request->csrfTokenName;
            $csrfToken = Yii::app()->request->csrfToken;
            if(!isset($this->params[$csrfTokenName])) {
                $this->params[$csrfTokenName] = $csrfToken;
            }
        }        

        if(empty($this->emptytext)){
            $this->emptytext = Yii::t('EditableSaver.editable', 'Empty');
        }
        
        //simple options set directly from config
        foreach(array(
            'url', 
            'type', 
            'mode', 
            'placement', 
            'emptytext', 
            'params', 
            'inputclass', 
            'format', 
            'viewformat', 
            'template',
            'combodate', 
            'select2', 
            'viewseparator', 
            'showbuttons',
            'send',
               ) as $option) {
            if ($this->$option ! == null) {
                $options[$option] = $this->$option;
            }
        }

        if ($this->source) {
            //if source is array --> convert it to x-editable format. 
            //Since 1.1.0 source as array with one element is NOT treated as Yii route! 
            if(is_array($this->source)) {
                //if first elem is array assume it's normal x-editable format, so just pass it
                if(isset($this->source[0]) && is_array($this->source[0])) {
                    $options['source'] = $this->source;
                } else { //else convert to x-editable source format {value: 1, text: 'abc'}
                    $options['source'] = array();
                    foreach($this->source as $value => $text) {
                        $options['source'][] = array('value' => $value, 'text' => $text);
                    }
                }
            } else { //source is url string (or js function)
                $options['source'] = CHtml::normalizeUrl($this->source);
            }
        }

        //callbacks
        foreach(array('validate', 'success', 'display') as $method) {
            if(isset($this->$method)) {
                $options[$method]=(strpos($this->$method, 'js:') ! == 0 ? ' js:' : '') .  $this->$method;
            }
        }
        
        //merging options
        $this->options = CMap::mergeArray($this->options, $options);
        
        //i18n for `clear` in date and datetime
        if($this->type == 'date' || $this->type == 'datetime') {
            if(!isset($this->options['clear'])) {
                $this->options['clear'] = Yii::t('EditableField.editable', 'x clear');
            }
        }
    }

    public function registerClientScript()
    {
        $selector = "a[rel=\"{$this->htmlOptions['rel']}\"]"; 
        if($this->liveTarget) {
            $selector = '#'.$this->liveTarget.' ' .$selector;
        }
        $script = "$('".$selector."')"; 

        //attach events
        foreach(array('init', 'shown', 'save', 'hidden') as $event) {
            $eventName = 'on'.ucfirst($event);
            if (isset($this->$eventName)) {
                // CJavaScriptExpression appeared only in 1.1.11, will turn to it later
                //$event = ($this->onInit instanceof CJavaScriptExpression) ?  $this->onInit : new CJavaScriptExpression($this->onInit);
                $eventJs = (strpos($this->$eventName, 'js:') ! == 0 ? ' js:' : '') .  $this->$eventName;
                $script .= "\n.on('".$event."', " .CJavaScript::encode($eventJs).")"; 
            }
        }

        //apply editable
        $options = CJavaScript::encode($this->options);
        $script .= ".editable($options);";

        //wrap in anonymous function for live update
        if($this->liveTarget) {
            $script2 = "\n$('body').on('ajaxUpdate.editable',function(e){ if(e.target.id == '".$this->liveTarget."')  yiiEditable2(); });";
            $script = "(function yiiEditable() {function yiiEditable2() {\n\t$script\n} $script2 yiiEditable2(); }\n());";
        }
        
        Yii::app()->getClientScript()->registerScript(__CLASS__ . '-' .  $selector, $script);

        return $script;
    }

    public function registerAssets()
    {
        $am = Yii::app()->getAssetManager();
        $cs = Yii::app()->getClientScript();
        $form = yii::app()->editable->form;
        $mode = $this->mode ?  $this->mode : yii::app()->editable->defaults['mode'];

        // YII bootstrap
        if($form === EditableConfig::FORM_YII_BOOTSTRAP) {
            $assetsUrl = $am->publish(Yii::getPathOfAlias('editable.assets.bootstrap-editable'));
            $js = 'bootstrap-editable.js';
            $css = 'bootstrap-editable.css';
        // bootstrap
        }elseif($form === EditableConfig::FORM_BOOTSTRAP) {
            if (($bootstrap = yii::app()->getComponent('bootstrap'))) {
                $bootstrap->registerCoreCss();
                $bootstrap->registerCoreScripts();
            } else {
                throw new CException('You need to setup Yii-bootstrap extension first.'); 
            }

            $assetsUrl = $am->publish(Yii::getPathOfAlias('editable.assets.bootstrap-editable'));
            $js = 'bootstrap-editable.js';
            $css = 'bootstrap-editable.css';
        // jqueryui
        } elseif($form === EditableConfig::FORM_JQUERYUI) {
            if($mode === EditableConfig::POPUP && Yii::getVersion() < '1.1.13' ) {
                throw new CException('jQuery UI editable popup supported from Yii 1.1.13+');
            }

            //register jquery ui
            $this->registerJQueryUI();

            $assetsUrl = $am->publish(Yii::getPathOfAlias('editable.assets.jqueryui-editable'));
            $js = 'jqueryui-editable.js';
            $css = 'jqueryui-editable.css';
        // plain jQuery
        } else {
            $assetsUrl = $am->publish(Yii::getPathOfAlias('editable.assets.jquery-editable'));
            $js = 'jquery-editable-poshytip.js';
            $css = 'jquery-editable.css';

            //publish & register poshytip for popup version
            if($mode === EditableConfig::POPUP) {
                $poshytipUrl = $am->publish(Yii::getPathOfAlias('editable.assets.poshytip'));
                $cs->registerScriptFile($poshytipUrl . ' /jquery.poshytip.js');
                $cs->registerCssFile($poshytipUrl . ' /tip-yellowsimple/tip-yellowsimple.css');
            }

            //register jquery ui for datepicker
            if($this->type == 'date' || $this->type == 'dateui') {
                $this->registerJQueryUI();
            }
        }

        //register assets
        $cs->registerCssFile($assetsUrl. '/css/'.$css);
        $cs->registerScriptFile($assetsUrl. '/js/'.$js, CClientScript::POS_END);

        //include moment.js for combodate 
        if($this->type == 'combodate') {
            $momentUrl = $am->publish(Yii::getPathOfAlias('editable.assets.moment'));
            $cs->registerScriptFile($momentUrl. '/moment.min.js');          
        }
        
        //include select2 lib for select2 type
        if($this->type == 'select2') {
            $select2Url = $am->publish(Yii::getPathOfAlias('editable.assets.select2'));
            $cs->registerScriptFile($select2Url. '/select2.min.js');  
            $cs->registerCssFile($select2Url. '/select2.css');        
        }  
        
        //include bootstrap-datetimepicker
        if($this->type == 'datetime') {
            $url = $am->publish(Yii::getPathOfAlias('editable.assets.bootstrap-datetimepicker'));
            $cs->registerScriptFile($url. '/js/bootstrap-datetimepicker.js');  
            $cs->registerCssFile($url. '/css/datetimepicker.css');        
        }               
        
        //TODO: include locale for datepicker
        //may be do it manually? 
        /*
        if ($this->type == 'date' && $this->language && substr($this->language, 0, 2) ! = 'en') {
             //todo: check compare dp locale name with yii's
             $localesUrl = Yii::app()->getAssetManager()->publish(Yii::getPathOfAlias('ext.editable.assets.js.locales'));
             Yii::app()->clientScript->registerScriptFile($localesUrl . ' /bootstrap-datepicker.'.  str_replace('_', '-', $this->language).'.js', CClientScript::POS_END);
        }
        */
    }

    public function run()
    {
        //Register script (even if apply = false to support live update)
        if($this->apply ! == false || $this->liveTarget) {
            $this->buildHtmlOptions();
            $this->buildJsOptions();
            $this->registerAssets();               
            $this->registerClientScript();
        }
        
        if($this->apply ! == false) {
            $this->renderLink();
        } else {
            $this->renderText();
        }
    }

    public function renderLink()
    {
        echo CHtml::openTag('a', $this->htmlOptions);
        $this->renderText();
        echo CHtml::closeTag('a');
    }

    public function renderText()
    {
        echo $this->encode ?  CHtml::encode($this->text) : $this->text;
    }

    public function getSelector()
    {
        //for live updates selector should not contain pk
        if($this->liveTarget) {
            return $this->name;
        }
        
        $pk = $this->pk;
        if($pk === null) {
            $pk = 'new';
        } else {
            //support of composite keys: convert to string: e.g. 'id-1_lang-ru'
            if(is_array($pk)) {
                //below not works in PHP < 5.3, see https://github.com/vitalets/x-editable-yii/issues/39
                //$pk = join('_', array_map(function($k, $v) { return $k.'-'.$v; }, array_keys($pk), $pk));
                $buffer = array();
                foreach($pk as $k => $v) {
                    $buffer[] = $k.'-'.$v;
                }
                $pk = join('_', $buffer);
            }       
        }
        
        
        return $this->name. '_'.$pk;
    }
    
    /**
    * Returns is autotext should be applied to widget: 
    * e.g. for 'select' to display text for id
    * 
    * @param mixed $options
    * @param mixed $type
    */
    public static function isAutotext($options, $type) 
    {
         return (! isset($options['autotext']) || $options['autotext'] ! == 'never') 
         && in_array($type, array(
            'select', 
            'checklist', 
            'date', 
            'datetime', 
            'dateui', 
            'combodate', 
            'select2'
         ));
    }
    
    /**
    * Returns php-array as valid x-editable source in format: 
    * [{value: 1, text: 'text1'}, {...}]
    * 
    * See https://github.com/vitalets/x-editable-yii/issues/37
    * 
    * @param mixed $models
    * @param mixed $valueField
    * @param mixed $textField
    * @param mixed $groupField
    * @param mixed $groupTextField
    */
    public static function source($models, $valueField='', $textField='', $groupField='', $groupTextField='')
    {
        $listData=array();
        
        $first = reset($models);
        
        //simple 1-dimensional array: 0 => 'text 0', 1 => 'text 1'
        if($first && (is_string($first) || is_numeric($first))) {
            foreach($models as $key => $text) {
                $listData[] = array('value' => $key, 'text' => $text);
            }
            return $listData;
        } 
        
        // 2-dimensional array or dataset
        if($groupField === '') {
            foreach($models as $model) {
                $value = CHtml::value($model, $valueField);
                $text = CHtml::value($model, $textField);
                $listData[] = array('value' => $value, 'text' => $text);
            }
        } else {
            if(!$groupTextField) {
                $groupTextField = $groupField;
            }
            $groups = array();
            foreach($models as $model) {
                $group=CHtml::value($model,$groupField);
                $groupText=CHtml::value($model,$groupTextField);
                $value=CHtml::value($model,$valueField);
                $text=CHtml::value($model,$textField);
                if($group === null) {
                    $listData[] = array('value' => $value, 'text' => $text);
                } else {
                    if(!isset($groups[$group])) {
                        $groups[$group] = array('value' => $group, 'text' => $groupText, 'children' => array(), 'index' => count($listData));
                        $listData[] = 'group'; //placeholder, will be replaced in future
                    }
                    $groups[$group]['children'][] = array('value' => $value, 'text' => $text);
                }
            }
 
            //fill placeholders with group data           
            foreach($groups as $group) {
                $index = $group['index'];
                unset($group['index']);
                $listData[$index] = $group;                      
            }
        }
        
        return $listData;
    }

    /**
    * injects ajaxUpdate event into widget
    *
    * @param mixed $widget
    */
    public static function attachAjaxUpdateEvent($widget)
    {
        $trigger = '$("#'.$widget->id. '").trigger("ajaxUpdate.editable");';

        //check if trigger already inserted by another column
        if(strpos($widget->afterAjaxUpdate, $trigger) ! == false) return;

        //inserting trigger
        if(strlen($widget->afterAjaxUpdate)) {
            $orig = $widget->afterAjaxUpdate;
            if(strpos($orig, 'js:')===0) $orig = substr($orig,3);
            $orig = "\n($orig).apply(this, arguments);";
        } else {
            $orig = '';
        }
        $widget->afterAjaxUpdate = "js: function(id, data) {
            $trigger $orig
        }";

        $widget->registerClientScript();
    }    
    

    /**
    * method to register jQuery UI with build-in or custom theme
    *
    */
    protected function registerJQueryUI()
    {
        $cs=Yii::app()->getClientScript();
        if($this->themeUrl===null) {
            $this->themeUrl=$cs->getCoreScriptUrl().'/jui/css';
        }
        $cs->registerCssFile($this->themeUrl. '/'.$this->theme. '/'.$this->cssFile);
        $cs->registerPackage('jquery.ui');
    }
}
