130 lines
3.3 KiB
PHP
130 lines
3.3 KiB
PHP
<?php
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/**
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* Set of radio buttons designed to emulate a dropdown.
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* It even uses the same constructor as a dropdown field.
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*
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* This field allows you to ensure that a form element is submitted is not optional and is part of a fixed set of
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* data. This field uses the input type of radio. It's a direct subclass of {@link DropdownField},
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* so the constructor and arguments are in the same format.
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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 OptionsetField(
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* $name = "Foobar",
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* $title = "FooBar's optionset",
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* $source = array(
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* "1" => "Option 1",
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* "2" => "Option 2",
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* "3" => "Option 3",
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* "4" => "Option 4",
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* "5" => "Option 5"
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* ),
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* $value = "1"
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* );
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* </code>
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*
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* You can use the helper functions on data object set to create the source array. eg:
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*
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* <code>
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* //Database request for the object
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* $myDoSet = DataList::create("FooBars","");
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* if($myDoSet){
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* // This returns an array of ID => Title
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* $map = $myDoSet->map();
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*
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* // Instantiate the OptionsetField
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* $FieldList = new FieldList(
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* new OptionsetField(
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* $name = "Foobar",
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* $title = "FooBar's optionset",
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* $source = $map,
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* $value = $map[0]
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* )
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* );
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* }
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*
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* // Pass the fields to the form constructor. etc
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* </code>
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*
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* @see CheckboxSetField for multiple selections through checkboxes instead.
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* @see DropdownField for a simple <select> field with a single element.
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* @see TreeDropdownField for a rich and customizeable UI that can visualize a tree of selectable elements
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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 OptionsetField extends DropdownField {
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/**
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* @var Array
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*/
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protected $disabledItems = array();
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function Field($properties = array()) {
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$source = $this->getSource();
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$odd = 0;
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$options = array();
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if($source) {
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foreach($source as $value => $title) {
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$itemID = $this->ID() . '_' . preg_replace('/[^a-zA-Z0-9]/', '', $value);
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$odd = ($odd + 1) % 2;
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$extraClass = $odd ? 'odd' : 'even';
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$extraClass .= ' val' . preg_replace('/[^a-zA-Z0-9\-\_]/', '_', $value);
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$options[] = new ArrayData(array(
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'ID' => $itemID,
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'Class' => $extraClass,
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'Name' => $this->name,
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'Value' => $value,
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'Title' => $title,
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'isChecked' => $value == $this->value,
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'isDisabled' => $this->disabled || in_array($value, $this->disabledItems),
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));
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}
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}
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$properties = array_merge($properties, array(
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'Options' => new ArrayList($options)
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));
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return $this->customise($properties)->renderWith(
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$this->getTemplates()
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);
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}
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function performReadonlyTransformation() {
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// Source and values are DataObject sets.
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$items = $this->getSource();
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$field = new LookupField($this->name, $this->title ? $this->title : '', $items, $this->value);
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$field->setForm($this->form);
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$field->setReadonly(true);
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return $field;
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}
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/**
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* Mark certain elements as disabled,
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* regardless of the {@link setDisabled()} settings.
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*
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* @param array $items Collection of array keys, as defined in the $source array
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*/
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function setDisabledItems($items) {
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$this->disabledItems = $items;
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return $this;
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}
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/**
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* @return Array
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*/
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function getDisabledItems() {
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return $this->disabledItems;
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}
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function ExtraOptions() {
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return new ArrayList();
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}
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}
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