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executable file 142 lines (131 sloc) 4.112 kb
<?php
/**
* Set of radio buttons designed to emulate a dropdown.
* It even uses the same constructor as a dropdown field.
*
* This field allows you to ensure that a form element is submitted is not optional and is part of a fixed set of
* data. This field uses the input type of radio. It's a direct subclass of {@link DropdownField},
* so the constructor and arguments are in the same format.
*
* <b>Usage</b>
*
* <code>
* new OptionsetField(
* $name = "Foobar",
* $title = "FooBar's optionset",
* $source = array(
* "1" => "Option 1",
* "2" => "Option 2",
* "3" => "Option 3",
* "4" => "Option 4",
* "5" => "Option 5"
* ),
* $value = "1"
* );
* </code>
*
* You can use the helper functions on data object set to create the source array. eg:
*
* <code>
* //Database request for the object
* $myDoSet = DataObject::get("FooBars","");
* if($myDoSet){
* // This returns an array of ID => Title
* $map = $myDoSet->toDropDownMap();
*
* // Instantiate the OptionsetField
* $fieldset = new Fieldset(
* new OptionsetField(
* $name = "Foobar",
* $title = "FooBar's optionset",
* $source = $map,
* $value = $map[0]
* )
* );
* }
*
* // Pass the fields to the form constructor. etc
* </code>
*
* @see CheckboxSetField for multiple selections through checkboxes instead.
* @see DropdownField for a simple <select> field with a single element.
* @see TreeDropdownField for a rich and customizeable UI that can visualize a tree of selectable elements
*
* @package forms
* @subpackage fields-basic
*/
class OptionsetField extends DropdownField {
/**
* @var Array
*/
protected $disabledItems = array();
/**
* Creates a new optionset field.
* @param name The field name
* @param title The field title
* @param source An map of the dropdown items
* @param value The current value
* @param form The parent form
*/
function __construct($name, $title = "", $source = array(), $value = "", $form = null) {
parent::__construct($name, $title, $source, $value, $form);
}
/**
* Create a UL tag containing sets of radio buttons and labels. The IDs are set to
* FieldID_ItemKey, where ItemKey is the key with all non-alphanumerics removed.
*
* @todo Should use CheckboxField FieldHolder rather than constructing own markup.
*/
function Field() {
$options = '';
$odd = 0;
$source = $this->getSource();
foreach($source as $key => $value) {
$itemID = $this->id() . "_" . ereg_replace('[^a-zA-Z0-9]+','',$key);
if($key == $this->value/* || $useValue */) {
$useValue = false;
$checked = " checked=\"checked\"";
} else {
$checked="";
}
$odd = ($odd + 1) % 2;
$extraClass = $odd ? "odd" : "even";
$extraClass .= " val" . preg_replace('/[^a-zA-Z0-9\-\_]/','_', $key);
$disabled = ($this->disabled || in_array($key, $this->disabledItems)) ? 'disabled="disabled"' : '';
$options .= "<li class=\"".$extraClass."\"><input id=\"$itemID\" name=\"$this->name\" type=\"radio\" value=\"$key\"$checked $disabled class=\"radio\" /> <label for=\"$itemID\">$value</label></li>\n";
}
$id = $this->id();
return "<ul id=\"$id\" class=\"optionset {$this->extraClass()}\">\n$options</ul>\n";
}
protected $disabled = false;
function setDisabled($val) {
$this->disabled = $val;
}
function performReadonlyTransformation() {
// Source and values are DataObject sets.
$items = $this->getSource();
$field = new LookupField($this->name,$this->title ? $this->title : "" ,$items,$this->value);
$field->setForm($this->form);
$field->setReadonly(true);
return $field;
}
/**
* Mark certain elements as disabled,
* regardless of the {@link setDisabled()} settings.
*
* @param array $items Collection of array keys, as defined in the $source array
*/
function setDisabledItems($items) {
$this->disabledItems = $items;
}
/**
* @return Array
*/
function getDisabledItems() {
return $this->disabledItems;
}
function ExtraOptions() {
return new DataObjectSet();
}
}
?>
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