lib/form/selectwithlink.php

   1 <?php
   2 require_once('HTML/QuickForm/select.php');
   3
   4 /**
   5  * HTML class for a select type element
   6  *
   7  * @author       Jamie Pratt
   8  * @access       public
   9  */
  10 class MoodleQuickForm_selectwithlink extends HTML_QuickForm_select{
  11     /**
  12      * html for help button, if empty then no help
  13      *
  14      * @var string
  15      */
  16     var $_helpbutton='';
  17     var $_hiddenLabel=false;
  18     var $_link=null;
  19     var $_linklabel=null;
  20     var $_linkreturn=null;
  21
  22     function MoodleQuickForm_selectwithlink($elementName=null, $elementLabel=null, $options=null, $attributes=null, $linkdata=null)
  23     {
  24         if (!empty($linkdata['link']) && !empty($linkdata['label'])) {
  25             $this->_link = $linkdata['link'];
  26             $this->_linklabel = $linkdata['label'];
  27         }
  28
  29         if (!empty($linkdata['return'])) {
  30             $this->_linkreturn = $linkdata['return'];
  31         }
  32
  33         parent::HTML_QuickForm_select($elementName, $elementLabel, $options, $attributes);
  34     } //end constructor
  35
  36     function setHiddenLabel($hiddenLabel){
  37         $this->_hiddenLabel = $hiddenLabel;
  38     }
  39     function toHtml(){
  40         $retval = '';
  41         if ($this->_hiddenLabel){
  42             $this->_generateId();
  43             $retval = '<label class="accesshide" for="'.$this->getAttribute('id').'" >'.
  44                         $this->getLabel().'</label>'.parent::toHtml();
  45         } else {
  46              $retval = parent::toHtml();
  47         }
  48
  49         if (!empty($this->_link)) {
  50             if (!empty($this->_linkreturn) && is_array($this->_linkreturn)) {
  51                 $appendchar = '?';
  52                 if (strstr($this->_link, '?')) {
  53                     $appendchar = '&amp;';
  54                 }
  55
  56                 foreach ($this->_linkreturn as $key => $val) {
  57                     $this->_link .= $appendchar."$key=$val";
  58                     $appendchar = '&amp;';
  59                 }
  60             }
  61
  62             $retval .= '<a style="margin-left: 5px" href="'.$this->_link.'">'.$this->_linklabel.'</a>';
  63         }
  64
  65         return $retval;
  66     }
  67    /**
  68     * Automatically generates and assigns an 'id' attribute for the element.
  69     *
  70     * Currently used to ensure that labels work on radio buttons and
  71     * checkboxes. Per idea of Alexander Radivanovich.
  72     * Overriden in moodleforms to remove qf_ prefix.
  73     *
  74     * @access private
  75     * @return void
  76     */
  77     function _generateId()
  78     {
  79         static $idx = 1;
  80
  81         if (!$this->getAttribute('id')) {
  82             $this->updateAttributes(array('id' => 'id_'. substr(md5(microtime() . $idx++), 0, 6)));
  83         }
  84     } // end func _generateId
  85     /**
  86      * set html for help button
  87      *
  88      * @access   public
  89      * @param array $help array of arguments to make a help button
  90      * @param string $function function name to call to get html
  91      */
  92     function setHelpButton($helpbuttonargs, $function='helpbutton'){
  93         if (!is_array($helpbuttonargs)){
  94             $helpbuttonargs=array($helpbuttonargs);
  95         }else{
  96             $helpbuttonargs=$helpbuttonargs;
  97         }
  98         //we do this to to return html instead of printing it
  99         //without having to specify it in every call to make a button.
 100         if ('helpbutton' == $function){
 101             $defaultargs=array('', '', 'moodle', true, false, '', true);
 102             $helpbuttonargs=$helpbuttonargs + $defaultargs ;
 103         }
 104         $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
 105     }
 106     /**
 107      * get html for help button
 108      *
 109      * @access   public
 110      * @return  string html for help button
 111      */
 112     function getHelpButton(){
 113         return $this->_helpbutton;
 114     }
 115     /**
 116      * Removes an OPTION from the SELECT
 117      *
 118      * @param     string    $value      Value for the OPTION to remove
 119      * @since     1.0
 120      * @access    public
 121      * @return    void
 122      */
 123     function removeOption($value)
 124     {
 125         $key=array_search($value, $this->_values);
 126         if ($key!==FALSE and $key!==null) {
 127             unset($this->_values[$key]);
 128         }
 129         foreach ($this->_options as $key=>$option){
 130             if ($option['attr']['value']==$value){
 131                 unset($this->_options[$key]);
 132                 return;
 133             }
 134         }
 135     } // end func removeOption
 136     /**
 137      * Removes all OPTIONs from the SELECT
 138      *
 139      * @param     string    $value      Value for the OPTION to remove
 140      * @since     1.0
 141      * @access    public
 142      * @return    void
 143      */
 144     function removeOptions()
 145     {
 146         $this->_options = array();
 147     } // end func removeOption
 148     /**
 149      * Slightly different container template when frozen. Don't want to use a label tag
 150      * with a for attribute in that case for the element label but instead use a div.
 151      * Templates are defined in renderer constructor.
 152      *
 153      * @return string
 154      */
 155     function getElementTemplateType(){
 156         if ($this->_flagFrozen){
 157             return 'static';
 158         } else {
 159             return 'default';
 160         }
 161     }
 162 }
 163 ?>