| // Copyright 2006 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview Multiple Element Drag and Drop. |
| * |
| * Drag and drop implementation for sources/targets consisting of multiple |
| * elements. |
| * |
| * @author eae@google.com (Emil A Eklund) |
| * @see ../demos/dragdrop.html |
| */ |
| |
| goog.provide('goog.fx.DragDropGroup'); |
| |
| goog.require('goog.dom'); |
| goog.require('goog.fx.AbstractDragDrop'); |
| goog.require('goog.fx.DragDropItem'); |
| |
| |
| |
| /** |
| * Drag/drop implementation for creating drag sources/drop targets consisting of |
| * multiple HTML Elements (items). All items share the same drop target(s) but |
| * can be dragged individually. |
| * |
| * @extends {goog.fx.AbstractDragDrop} |
| * @constructor |
| */ |
| goog.fx.DragDropGroup = function() { |
| goog.fx.AbstractDragDrop.call(this); |
| }; |
| goog.inherits(goog.fx.DragDropGroup, goog.fx.AbstractDragDrop); |
| |
| |
| /** |
| * Add item to drag object. |
| * |
| * @param {Element|string} element Dom Node, or string representation of node |
| * id, to be used as drag source/drop target. |
| * @param {Object=} opt_data Data associated with the source/target. |
| * @throws Error If no element argument is provided or if the type is |
| * invalid |
| * @override |
| */ |
| goog.fx.DragDropGroup.prototype.addItem = function(element, opt_data) { |
| var item = new goog.fx.DragDropItem(element, opt_data); |
| this.addDragDropItem(item); |
| }; |
| |
| |
| /** |
| * Add DragDropItem to drag object. |
| * |
| * @param {goog.fx.DragDropItem} item DragDropItem being added to the |
| * drag object. |
| * @throws Error If no element argument is provided or if the type is |
| * invalid |
| */ |
| goog.fx.DragDropGroup.prototype.addDragDropItem = function(item) { |
| item.setParent(this); |
| this.items_.push(item); |
| if (this.isInitialized()) { |
| this.initItem(item); |
| } |
| }; |
| |
| |
| /** |
| * Remove item from drag object. |
| * |
| * @param {Element|string} element Dom Node, or string representation of node |
| * id, that was previously added with addItem(). |
| */ |
| goog.fx.DragDropGroup.prototype.removeItem = function(element) { |
| element = goog.dom.getElement(element); |
| for (var item, i = 0; item = this.items_[i]; i++) { |
| if (item.element == element) { |
| this.items_.splice(i, 1); |
| this.disposeItem(item); |
| break; |
| } |
| } |
| }; |
| |
| |
| /** |
| * Marks the supplied list of items as selected. A drag operation for any of the |
| * selected items will affect all of them. |
| * |
| * @param {Array<goog.fx.DragDropItem>} list List of items to select or null to |
| * clear selection. |
| * |
| * TODO(eae): Not yet implemented. |
| */ |
| goog.fx.DragDropGroup.prototype.setSelection = function(list) { |
| |
| }; |