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MDL-16962 New formslib element for dropdowns with a link to another p…

…age. Applied to outcome item and outcome edit pages.
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1 parent 2bc741e commit b75bb79414907440a8bc4dde69a806ca9629dad6 nicolasconnault committed Oct 22, 2008
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  1. +163 −0 lib/form/selectwithlink.php
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163 lib/form/selectwithlink.php
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+<?php
+require_once('HTML/QuickForm/select.php');
+
+/**
+ * HTML class for a select type element
+ *
+ * @author Jamie Pratt
+ * @access public
+ */
+class MoodleQuickForm_selectwithlink extends HTML_QuickForm_select{
+ /**
+ * html for help button, if empty then no help
+ *
+ * @var string
+ */
+ var $_helpbutton='';
+ var $_hiddenLabel=false;
+ var $_link=null;
+ var $_linklabel=null;
+ var $_linkreturn=null;
+
+ function MoodleQuickForm_selectwithlink($elementName=null, $elementLabel=null, $options=null, $attributes=null, $linkdata=null)
+ {
+ if (!empty($linkdata['link']) && !empty($linkdata['label'])) {
+ $this->_link = $linkdata['link'];
+ $this->_linklabel = $linkdata['label'];
+ }
+
+ if (!empty($linkdata['return'])) {
+ $this->_linkreturn = $linkdata['return'];
+ }
+
+ parent::HTML_QuickForm_select($elementName, $elementLabel, $options, $attributes);
+ } //end constructor
+
+ function setHiddenLabel($hiddenLabel){
+ $this->_hiddenLabel = $hiddenLabel;
+ }
+ function toHtml(){
+ $retval = '';
+ if ($this->_hiddenLabel){
+ $this->_generateId();
+ $retval = '<label class="accesshide" for="'.$this->getAttribute('id').'" >'.
+ $this->getLabel().'</label>'.parent::toHtml();
+ } else {
+ $retval = parent::toHtml();
+ }
+
+ if (!empty($this->_link)) {
+ if (!empty($this->_linkreturn) && is_array($this->_linkreturn)) {
+ $appendchar = '?';
+ if (strstr($this->_link, '?')) {
+ $appendchar = '&amp;';
+ }
+
+ foreach ($this->_linkreturn as $key => $val) {
+ $this->_link .= $appendchar."$key=$val";
+ $appendchar = '&amp;';
+ }
+ }
+
+ $retval .= '<a style="margin-left: 5px" href="'.$this->_link.'">'.$this->_linklabel.'</a>';
+ }
+
+ return $retval;
+ }
+ /**
+ * Automatically generates and assigns an 'id' attribute for the element.
+ *
+ * Currently used to ensure that labels work on radio buttons and
+ * checkboxes. Per idea of Alexander Radivanovich.
+ * Overriden in moodleforms to remove qf_ prefix.
+ *
+ * @access private
+ * @return void
+ */
+ function _generateId()
+ {
+ static $idx = 1;
+
+ if (!$this->getAttribute('id')) {
+ $this->updateAttributes(array('id' => 'id_'. substr(md5(microtime() . $idx++), 0, 6)));
+ }
+ } // end func _generateId
+ /**
+ * set html for help button
+ *
+ * @access public
+ * @param array $help array of arguments to make a help button
+ * @param string $function function name to call to get html
+ */
+ function setHelpButton($helpbuttonargs, $function='helpbutton'){
+ if (!is_array($helpbuttonargs)){
+ $helpbuttonargs=array($helpbuttonargs);
+ }else{
+ $helpbuttonargs=$helpbuttonargs;
+ }
+ //we do this to to return html instead of printing it
+ //without having to specify it in every call to make a button.
+ if ('helpbutton' == $function){
+ $defaultargs=array('', '', 'moodle', true, false, '', true);
+ $helpbuttonargs=$helpbuttonargs + $defaultargs ;
+ }
+ $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
+ }
+ /**
+ * get html for help button
+ *
+ * @access public
+ * @return string html for help button
+ */
+ function getHelpButton(){
+ return $this->_helpbutton;
+ }
+ /**
+ * Removes an OPTION from the SELECT
+ *
+ * @param string $value Value for the OPTION to remove
+ * @since 1.0
+ * @access public
+ * @return void
+ */
+ function removeOption($value)
+ {
+ $key=array_search($value, $this->_values);
+ if ($key!==FALSE and $key!==null) {
+ unset($this->_values[$key]);
+ }
+ foreach ($this->_options as $key=>$option){
+ if ($option['attr']['value']==$value){
+ unset($this->_options[$key]);
+ return;
+ }
+ }
+ } // end func removeOption
+ /**
+ * Removes all OPTIONs from the SELECT
+ *
+ * @param string $value Value for the OPTION to remove
+ * @since 1.0
+ * @access public
+ * @return void
+ */
+ function removeOptions()
+ {
+ $this->_options = array();
+ } // end func removeOption
+ /**
+ * Slightly different container template when frozen. Don't want to use a label tag
+ * with a for attribute in that case for the element label but instead use a div.
+ * Templates are defined in renderer constructor.
+ *
+ * @return string
+ */
+ function getElementTemplateType(){
+ if ($this->_flagFrozen){
+ return 'static';
+ } else {
+ return 'default';
+ }
+ }
+}
+?>

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