2007-07-19 12:40:28 +02:00
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<?php
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2008-01-09 05:18:36 +01:00
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/**
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* Dropdown-like field that gives you a tree of items, using ajax.
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* @package forms
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* @subpackage fields-relational
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*/
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2007-07-19 12:40:28 +02:00
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class TreeDropdownField extends FormField {
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protected $sourceObject, $keyField, $labelField, $filterFunc;
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protected $treeBaseID = 0;
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/**
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* Create a new tree dropdown field.
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* @param name The name of the field.
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* @param title The label of the field.
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2008-01-13 23:06:51 +01:00
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* @param sourceObject The object-type to list in the tree. Must be a 'hierachy' object.
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2007-07-19 12:40:28 +02:00
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* @param keyField The column of that object-type to return as the field value. Defaults to ID
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* @param labelField The column to show as the human-readable value in the tree. Defaults to Title
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*/
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function __construct($name, $title, $sourceObject = "Group", $keyField = "ID", $labelField = "Title") {
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$this->sourceObject = $sourceObject;
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$this->keyField = $keyField;
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$this->labelField = $labelField;
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2007-09-27 22:56:55 +02:00
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Requirements::css('sapphire/css/TreeDropdownField.css');
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2007-07-19 12:40:28 +02:00
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parent::__construct($name, $title);
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}
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function setFilterFunction($filterFunc) {
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$this->filterFunc = $filterFunc;
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}
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/**
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* Set the root node of the tree. Defaults to 0, ie, the whole tree
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*/
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function setTreeBaseID($treeBaseID) {
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$this->treeBaseID = $treeBaseID;
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}
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function Field() {
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Requirements::javascript("jsparty/tree/tree.js");
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Requirements::css("jsparty/tree/tree.css");
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Requirements::javascript("sapphire/javascript/TreeSelectorField.js");
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if($this->value) {
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$record = DataObject::get_by_id($this->sourceObject, $this->value);
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$title = $record->Title;
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} else {
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2007-10-25 04:47:45 +02:00
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$title = _t('DropdownField.CHOOSE', "(Choose)", PR_MEDIUM, 'Start-value of a dropdown');
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2007-07-19 12:40:28 +02:00
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}
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$id = $this->id();
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return <<<HTML
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<div id="TreeDropdownField_$id" class="TreeDropdownField single"><input id="$id" type="hidden" name="$this->name" value="$this->value" /><span class="items">$title</span><a href="#" title="open" class="editLink"> </a></div>
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HTML;
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}
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/**
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* Return the site tree
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*/
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function gettree() {
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if($this->treeBaseID) $obj = DataObject::get_by_id($this->sourceObject, $this->treeBaseID);
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else $obj = singleton($this->sourceObject);
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if($this->filterFunc) $obj->setMarkingFilterFunction($this->filterFunc);
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else if($this->sourceObject == 'Folder') $obj->setMarkingFilter('ClassName', 'Folder');
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$obj->markPartialTree();
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// If we've already got values selected, make sure that we've got them in our tree
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if($_REQUEST['forceValues']) {
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$forceValues = split(" *, *", trim($_REQUEST['forceValues']));
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foreach($forceValues as $value) {
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$obj->markToExpose($this->getByKey($value));
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}
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}
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$eval = '"<li id=\"selector-' . $this->name . '-$child->' . $this->keyField . '\" class=\"$child->class" . $child->markingClasses() . "\"><a>" . $child->' . $this->labelField . ' . "</a>"';
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echo $obj->getChildrenAsUL("class=\"tree\"", $eval, null, true);
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}
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/**
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* Return a subtree via Ajax
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*/
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public function getsubtree() {
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if($this->keyField == "ID") $obj = DataObject::get_by_id($this->sourceObject, $_REQUEST['SubtreeRootID']);
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else $obj = DataObject::get_one($this->sourceObject, "$this->keyField = '$_REQUEST[SubtreeRootID]'");
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if(!$obj) user_error("Can't find database record $this->sourceObject with $this->keyField = $_REQUEST[SubtreeRootID]", E_USER_ERROR);
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if($this->filterFunc) $obj->setMarkingFilterFunction($this->filterFunc);
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$obj->markPartialTree();
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$eval = '"<li id=\"selector-' . $this->name . '-$child->' . $this->keyField . '\" class=\"$child->class" . $child->markingClasses() . "\"><a>" . $child->' . $this->labelField . ' . "</a>"';
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$tree = $obj->getChildrenAsUL("", $eval, null, true);
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echo substr(trim($tree), 4,-5);
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}
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public function getByKey($key) {
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if(!is_numeric($key)) {
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return false;
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}
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if($this->keyField == 'ID') {
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return DataObject::get_by_id($this->sourceObject, $key);
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} else {
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return DataObject::get_one($this->sourceObject, "$this->keyField = '$key'");
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}
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}
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/**
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* Return the stack of values to be traversed to find the given key in the database
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*/
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public function getstack() {
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if($this->keyField == "ID") $page = DataObject::get_by_id($this->sourceObject, $_REQUEST['SubtreeRootID']);
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else $page = $this->getByKey($_REQUEST['SubtreeRootID']);
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while($page->ParentID) {
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echo $ids[] = $page->ID;
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$page = $page->Parent;
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}
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$ids[] = $page->ID;
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echo implode(",", array_reverse($ids));
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}
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function performReadonlyTransformation() {
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$fieldName = $this->labelField;
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$source = array(
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$this->value => $this->getByKey($this->value)->$fieldName
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);
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$field = new LookupField($this->name, $this->title, $source);
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$field->setValue($this->value);
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$field->setForm($this->form);
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return $field;
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}
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}
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2008-01-13 23:06:51 +01:00
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?>
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