71 lines
1.8 KiB
PHP
71 lines
1.8 KiB
PHP
<?php
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/**
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* Grouped dropdown, using <optgroup> tags.
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*
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* $source parameter (from DropdownField) must be a two dimensional array.
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* The first level of the array is used for the <optgroup>, and the second
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* level are the <options> for each group.
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*
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* Returns a <select> tag containing all the appropriate <option> tags, with
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* <optgroup> tags around the <option> tags as required.
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*
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* <b>Usage</b>
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*
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* <code>
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* new GroupedDropdownField(
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* $name = "dropdown",
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* $title = "Simple Grouped Dropdown",
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* $source = array(
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* "numbers" => array(
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* "1" => "1",
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* "2" => "2",
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* "3" => "3",
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* "4" => "4"
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* ),
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* "letters" => array(
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* "1" => "A",
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* "2" => "B",
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* "3" => "C",
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* "4" => "D",
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* "5" => "E",
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* "6" => "F"
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* )
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* )
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* )
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* </code>
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*
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* @package forms
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* @subpackage fields-basic
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*/
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class GroupedDropdownField extends DropdownField {
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function Field() {
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// Initialisations
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$options = '';
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$classAttr = '';
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if($extraClass = trim($this->extraClass())) {
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$classAttr = "class=\"$extraClass\"";
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}
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foreach($this->getSource() as $value => $title) {
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if(is_array($title)) {
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$options .= "<optgroup label=\"$value\">";
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foreach($title as $value2 => $title2) {
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$selected = $value2 == $this->value ? " selected=\"selected\"" : "";
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$options .= "<option$selected value=\"$value2\">$title2</option>";
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}
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$options .= "</optgroup>";
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} else { // Fall back to the standard dropdown field
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$selected = $value == $this->value ? " selected=\"selected\"" : "";
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$options .= "<option$selected value=\"$value\">$title</option>";
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}
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}
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$id = $this->id();
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return "<select $classAttr name=\"$this->name\" id=\"$id\">$options</select>";
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}
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}
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?>
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