| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| package flashx.textLayout.edit |
| { |
| import flashx.textLayout.debug.assert; |
| import flashx.textLayout.elements.FlowElement; |
| import flashx.textLayout.elements.FlowGroupElement; |
| import flashx.textLayout.elements.TextFlow; |
| |
| [ExcludeClass] |
| /** |
| * The MementoList class is a meta-memento. It encapuslates the concept of having a sequence of mementos behave as a memento. |
| * |
| * @playerversion Flash 10 |
| * @playerversion AIR 1.5 |
| * @langversion 3.0 |
| */ |
| |
| public class MementoList implements IMemento |
| { |
| private var _mementoList:Array; |
| /** |
| * MementoList is a memento made of a list of other mementos |
| */ |
| public function MementoList(textFlow:TextFlow) |
| { |
| } |
| |
| public function push(memento:IMemento):void |
| { |
| if (memento) |
| mementoList.push(memento); |
| } |
| |
| private function get mementoList():Array |
| { |
| if(!_mementoList) |
| _mementoList = []; |
| |
| return _mementoList; |
| } |
| |
| public function undo():* |
| { |
| var retVal:Array = []; |
| if(_mementoList) |
| { |
| _mementoList.reverse(); |
| for each (var memento:IMemento in _mementoList) |
| retVal.push(memento.undo()); |
| _mementoList.reverse(); |
| } |
| |
| return retVal; |
| } |
| |
| public function redo():* |
| { |
| var retVal:Array = []; |
| for each (var memento:IMemento in _mementoList) |
| retVal.push(memento.redo()); |
| return retVal; |
| } |
| } |
| } |