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MDL-12389 Added a new getElementsByClassName function in lib/javascri…
…pt.php, added the selectallornone formslib element, modified the advcheckbox element to support the group variable, and implemented the new element in grade_export_form
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nicolasconnault
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Dec 3, 2007
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| <?php // $Id$ | ||
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| /////////////////////////////////////////////////////////////////////////// | ||
| // // | ||
| // NOTICE OF COPYRIGHT // | ||
| // // | ||
| // Moodle - Modular Object-Oriented Dynamic Learning Environment // | ||
| // http://moodle.com // | ||
| // // | ||
| // Copyright (C) 1999 onwards Martin Dougiamas http://dougiamas.com // | ||
| // // | ||
| // This program is free software; you can redistribute it and/or modify // | ||
| // it under the terms of the GNU General Public License as published by // | ||
| // the Free Software Foundation; either version 2 of the License, or // | ||
| // (at your option) any later version. // | ||
| // // | ||
| // This program is distributed in the hope that it will be useful, // | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of // | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // | ||
| // GNU General Public License for more details: // | ||
| // // | ||
| // http://www.gnu.org/copyleft/gpl.html // | ||
| // // | ||
| /////////////////////////////////////////////////////////////////////////// | ||
|
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| require_once("HTML/QuickForm/link.php"); | ||
|
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| /** | ||
| * HTML class for a multiple checkboxes state controller | ||
| * | ||
| * @author Nicolas Connault <nicolasconnault@gmail.com> | ||
| * @version 1.0 | ||
| * @since PHP4.04pl1 | ||
| * @access public | ||
| */ | ||
| class MoodleQuickForm_selectallornone extends HTML_QuickForm_link { | ||
| /** | ||
| * The original state of the checkboxes controlled by this element. This determines whether the first click of this element will switch them all to | ||
| * checked or to unchecked. It doesn't change the checked state of the original elements (there could be a mixed of checked/unchecked there), but | ||
| * there has to be a decision as to which action will be taken by clicking "select all/select none" the first time. | ||
| * @var int $originalValue | ||
| */ | ||
| var $_originalValue = 0; | ||
|
|
||
| /** | ||
| * Constructor | ||
| * @param string $elementName The name of the group of advcheckboxes this element controls | ||
| * @param string $text The text of the link. Defaults to "select all/none" | ||
| * @param array $attributes associative array of HTML attributes | ||
| * @param int $originalValue The original general state of the checkboxes before the user first clicks this element | ||
| */ | ||
| function MoodleQuickForm_selectallornone($elementName=null, $text=null, $attributes=null, $originalValue=0) { | ||
| if (is_null($originalValue)) { | ||
| $originalValue = 0; | ||
| } | ||
|
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| global $FULLME; | ||
| $this->_originalValue = $originalValue; | ||
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| if (is_null($elementName)) { | ||
| return; | ||
| } | ||
| $elementLabel = ' '; | ||
| $strselectallornone = get_string('selectallornone', 'form'); | ||
| $attributes['onmouseover'] = "window.status='" . $strselectallornone . "';"; | ||
| $attributes['onmouseout'] = "window.status='';"; | ||
| $attributes['onclick'] = "html_quickform_toggle_checkboxes($elementName); return false;"; | ||
| $select_value = optional_param('select'. $elementName, $originalValue, PARAM_INT); | ||
|
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| if ($select_value == 0) { | ||
| $new_select_value = 1; | ||
| } else { | ||
| $new_select_value = 0; | ||
| } | ||
|
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| $old_selectstr = "&select$elementName=$select_value"; | ||
| $new_selectstr = "&select$elementName=$new_select_value"; | ||
| $new_fullme = str_replace($old_selectstr, '', $FULLME); | ||
|
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| $href = "$new_fullme$new_selectstr"; | ||
|
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| if (empty($text)) { | ||
| $text = $strselectallornone; | ||
| } | ||
| $this->HTML_QuickForm_link($elementName, $elementLabel, $href, $text, $attributes); | ||
| } | ||
|
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| function toHtml() { | ||
| if (is_null($this->_originalValue)) { | ||
| return false; | ||
| } | ||
|
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| $group = $this->_attributes['name']; | ||
| if ($this->_flagFrozen) { | ||
| $js = ''; | ||
| } else { | ||
| $js = "<script type=\"text/javascript\">\n//<![CDATA[\n"; | ||
| if (!defined('HTML_QUICKFORM_SELECTALLORNONE_EXISTS')) { | ||
| $js .= <<<EOS | ||
| function html_quickform_toggle_checkboxes(group) { | ||
| var checkboxes = getElementsByClassName(document, 'input', 'checkboxgroup' + group); | ||
| var newvalue = false; | ||
| var global = eval('html_quickform_checkboxgroup' + group + ';'); | ||
| if (global == 1) { | ||
| eval('html_quickform_checkboxgroup' + group + ' = 0;'); | ||
| newvalue = ''; | ||
| } else { | ||
| eval('html_quickform_checkboxgroup' + group + ' = 1;'); | ||
| newvalue = 'checked'; | ||
| } | ||
| for (i = 0; i < checkboxes.length; i++) { | ||
| checkboxes[i].checked = newvalue; | ||
| } | ||
| } | ||
| EOS; | ||
| define('HTML_QUICKFORM_SELECTALLORNONE_EXISTS', true); | ||
| } | ||
| $js .= "var html_quickform_checkboxgroup$group=$this->_originalValue;"; | ||
|
|
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| $js .= "//]]>\n</script>"; | ||
| } | ||
| return $js . parent::toHtml(); | ||
| } | ||
| } | ||
| ?> |
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