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<?php |
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namespace devgroup\JsTreeWidget\widgets; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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use yii\base\Widget; |
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use yii\helpers\Html; |
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use yii\helpers\Json; |
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use yii\helpers\Url; |
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use yii\web\JsExpression; |
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use yii\helpers\ArrayHelper; |
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use yii\web\View; |
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/** |
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* JsTree widget for Yii Framework 2 |
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*/ |
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class TreeWidget extends Widget |
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{ |
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const TREE_TYPE_ADJACENCY = 'adjacency'; |
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const TREE_TYPE_NESTED_SET = 'nested-set'; |
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public $treeType = self::TREE_TYPE_ADJACENCY; |
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/** |
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* @var array Enabled jsTree plugins |
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* @see http://www.jstree.com/plugins/ |
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*/ |
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public $plugins = [ |
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'wholerow', |
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'contextmenu', |
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'dnd', |
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'types', |
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'state', |
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]; |
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/** |
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* @var array Configuration for types plugin |
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* @see http://www.jstree.com/api/#/?f=$.jstree.defaults.types |
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*/ |
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public $types = [ |
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'show' => [ |
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'icon' => 'fa fa-file-o', |
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], |
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'list' => [ |
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'icon' => 'fa fa-list', |
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], |
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]; |
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/** |
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* Context menu actions configuration. |
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* @var array |
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*/ |
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public $contextMenuItems = []; |
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/** |
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* Various options for jsTree plugin. Will be merged with default options. |
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* @var array |
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*/ |
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public $options = []; |
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/** |
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* Route to action which returns json data for tree |
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* @var array |
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*/ |
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public $treeDataRoute = null; |
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/** |
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* Translation category for Yii::t() which will be applied to labels. |
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* If translation is not needed - use false. |
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*/ |
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public $menuLabelsTranslationCategory = 'app'; |
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/** |
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* JsExpression for action(callback function) on double click. You can use JsExpression or make custom expression. |
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* Warning! Callback function differs from native jsTree function - it consumes only one attribute - node(similar to contextmenu action). |
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* Use false if no action needed. |
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* @var bool|JsExpression |
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*/ |
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public $doubleClickAction = false; |
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public $changeParentAction = false; |
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public $reorderAction = false; |
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public function run() |
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{ |
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if (!is_array($this->treeDataRoute)) { |
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throw new InvalidConfigException("Attribute treeDataRoute is required to use TreeWidget."); |
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} |
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$options = [ |
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'plugins' => $this->plugins, |
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'core' => [ |
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'check_callback' => true, |
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'data' => [ |
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'url' => new JsExpression( |
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"function (node) { |
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return " . Json::encode(Url::to($this->treeDataRoute)) . "; |
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}" |
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), |
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'data' => new JsExpression( |
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"function (node) { |
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return { 'id' : node.id }; |
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}" |
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), |
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] |
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] |
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]; |
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// merge with contextmenu configuration |
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$options = ArrayHelper::merge($options, $this->contextMenuOptions()); |
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// merge with attribute-provided options |
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$options = ArrayHelper::merge($options, $this->options); |
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$options = Json::encode($options); |
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$this->getView()->registerAssetBundle('devgroup\JsTreeWidget\widgets\JsTreeAssetBundle'); |
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$doubleClick = ''; |
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if ($this->doubleClickAction !== false) { |
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$doubleClick = " |
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jsTree_{$this->getId()}.on('dblclick.jstree', function (e) { |
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var node = $(e.target).closest('.jstree-node').children('.jstree-anchor'); |
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var callback = " . $this->doubleClickAction . "; |
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callback(node); |
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return false; |
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});\n"; |
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} |
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$treeJs = $this->prepareJs(); |
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$this->getView()->registerJs(" |
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var jsTree_{$this->getId()} = \$('#{$this->getId()}').jstree($options); |
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$doubleClick $treeJs", View::POS_READY); |
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return Html::tag('div', '', ['id' => $this->getId()]); |
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} |
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private function contextMenuOptions() |
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{ |
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$options = []; |
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if (count($this->contextMenuItems) > 0) { |
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if (!in_array('contextmenu', $this->plugins)) { |
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// add missing contextmenu plugin |
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$options['plugins'] = ['contextmenu']; |
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} |
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$options['contextmenu']['items'] = []; |
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foreach ($this->contextMenuItems as $index => $item) { |
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if ($this->menuLabelsTranslationCategory !== false) { |
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$item['label'] = Yii::t($this->menuLabelsTranslationCategory, $item['label']); |
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} |
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$options['contextmenu']['items'][$index] = $item; |
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} |
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} |
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return $options; |
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} |
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private function prepareJs() |
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{ |
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switch ($this->treeType) { |
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case self::TREE_TYPE_ADJACENCY : |
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return $this->adjacecncyJs(); |
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case self::TREE_TYPE_NESTED_SET : |
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return $this->nestedSetJs(); |
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} |
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} |
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private function adjacecncyJs() |
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{ |
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$changeParent = ''; |
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if ($this->changeParentAction !== false) { |
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$changeParentUrl = is_array($this->changeParentAction) ? Url::to($this->changeParentAction) : $this->changeParentAction; |
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$changeParent = " |
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jsTree_{$this->getId()}.bind('move_node.jstree', function(e, data) { |
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jQuery.get( |
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'" . $changeParentUrl . "', |
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{ |
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'id': data.node.id, |
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'parent_id': data.parent |
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} |
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); |
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return false; |
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});\n"; |
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} |
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$reorder = ''; |
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if ($this->reorderAction !== false) { |
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$reorderUrl = is_array($this->reorderAction) ? Url::to($this->reorderAction) : $this->reorderAction; |
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$reorder = " |
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jsTree_{$this->getId()}.bind('move_node.jstree', function(e, data) { |
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var params = []; |
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jQuery('.jstree-node').each(function(i, e) { |
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params[e.id] = i; |
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}); |
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jQuery.post( |
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'" . $reorderUrl . "', |
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{'order':params } |
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); |
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return false; |
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});\n"; |
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} |
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return $changeParent . $reorder; |
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} |
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private function nestedSetJs() |
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{ |
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$js = ""; |
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if (false !== $this->reorderAction || false !== $this->changeParentAction) { |
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$action = $this->reorderAction ?: $this->changeParentAction; |
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$url = is_array($action) ? Url::to($action) : $action; |
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$js = new JsExpression( |
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"jsTree_{$this->getId()}.on('move_node.jstree', function(e, data) { |
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\$parent = $(this).jstree(true).get_node(data.parent); |
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siblings = \$parent.children || {}; |
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$.post( |
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'{$url}', |
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{ |
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'node_id' : data.node.id, |
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'parent': data.parent, |
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'position': data.position, |
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'old_parent': data.old_parent, |
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'old_position': data.old_position, |
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'is_multi': data.is_multi, |
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'siblings': siblings |
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} |
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); |
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return false; |
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});\n" |
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); |
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} |
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return $js; |
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} |
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} |
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Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.