lib/form/url.php

   1 <?php
   2 require_once("HTML/QuickForm/text.php");
   3
   4 /**
   5  * HTML class for a url type element
   6  *
   7  * @author       Jamie Pratt
   8  * @access       public
   9  */
  10 class MoodleQuickForm_url extends HTML_QuickForm_text{
  11     /**
  12      * html for help button, if empty then no help
  13      *
  14      * @var string
  15      */
  16     var $_helpbutton='';
  17     var $_hiddenLabel=false;
  18
  19     function MoodleQuickForm_url($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
  20         global $CFG;
  21         require_once("$CFG->dirroot/repository/lib.php");
  22         $options = (array)$options;
  23         foreach ($options as $name=>$value) {
  24             $this->_options[$name] = $value;
  25         }
  26         if (!isset($this->_options['usefilepicker'])) {
  27             $this->_options['usefilepicker'] = true;
  28         }
  29         parent::HTML_QuickForm_text($elementName, $elementLabel, $attributes);
  30     }
  31
  32     function setHiddenLabel($hiddenLabel){
  33         $this->_hiddenLabel = $hiddenLabel;
  34     }
  35     function toHtml(){
  36         global $CFG, $COURSE, $USER, $PAGE, $OUTPUT;
  37
  38         $id     = $this->_attributes['id'];
  39         $elname = $this->_attributes['name'];
  40
  41         if ($this->_hiddenLabel) {
  42             $this->_generateId();
  43             $str = '<label class="accesshide" for="'.$this->getAttribute('id').'" >'.
  44                         $this->getLabel().'</label>'.parent::toHtml();
  45         } else {
  46             $str = parent::toHtml();
  47         }
  48         if (empty($this->_options['usefilepicker'])) {
  49             return $str;
  50         }
  51         $strsaved = get_string('filesaved', 'repository');
  52         $straddlink = get_string('choosealink', 'repository');
  53         if ($COURSE->id == SITEID) {
  54             $context = get_context_instance(CONTEXT_SYSTEM);
  55         } else {
  56             $context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
  57         }
  58         $client_id = uniqid();
  59
  60         $str .= <<<EOD
  61 <button id="filepicker-button-{$client_id}" style="display:none">
  62 $straddlink
  63 </button>
  64 EOD;
  65         $args = new stdClass();
  66         $args->accepted_types = '*';
  67         $args->return_types = FILE_EXTERNAL;
  68         $args->context = $PAGE->context;
  69         $args->client_id = $client_id;
  70         $args->env = 'url';
  71         $fp = new file_picker($args);
  72         $options = $fp->options;
  73
  74         // print out file picker
  75         $str .= $OUTPUT->render($fp);
  76
  77         $module = array('name'=>'form_url', 'fullpath'=>'/lib/form/url.js', 'requires'=>array('core_filepicker'));
  78         $PAGE->requires->js_init_call('M.form_url.init', array($options), true, $module);
  79         $PAGE->requires->js_function_call('show_item', array('filepicker-button-'.$client_id));
  80
  81         return $str;
  82     }
  83    /**
  84     * Automatically generates and assigns an 'id' attribute for the element.
  85     *
  86     * Currently used to ensure that labels work on radio buttons and
  87     * checkboxes. Per idea of Alexander Radivanovich.
  88     * Overriden in moodleforms to remove qf_ prefix.
  89     *
  90     * @access private
  91     * @return void
  92     */
  93     function _generateId()
  94     {
  95         static $idx = 1;
  96
  97         if (!$this->getAttribute('id')) {
  98             $this->updateAttributes(array('id' => 'id_'. substr(md5(microtime() . $idx++), 0, 6)));
  99         }
 100     } // end func _generateId
 101     /**
 102      * set html for help button
 103      *
 104      * @access   public
 105      * @param array $help array of arguments to make a help button
 106      * @param string $function function name to call to get html
 107      */
 108     function setHelpButton($helpbuttonargs, $function='helpbutton'){
 109         debugging('component setHelpButton() is not used any more, please use $mform->setHelpButton() instead');
 110     }
 111     /**
 112      * get html for help button
 113      *
 114      * @access   public
 115      * @return  string html for help button
 116      */
 117     function getHelpButton(){
 118         return $this->_helpbutton;
 119     }
 120     /**
 121      * Slightly different container template when frozen. Don't want to use a label tag
 122      * with a for attribute in that case for the element label but instead use a div.
 123      * Templates are defined in renderer constructor.
 124      *
 125      * @return string
 126      */
 127     function getElementTemplateType(){
 128         if ($this->_flagFrozen){
 129             return 'static';
 130         } else {
 131             return 'default';
 132         }
 133     }
 134 }