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/**
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* Bull SAS / OW2 Orchestra
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* Copyright (C) 2010 Bull S.A.S, and individual contributors as indicated
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* by the @authors tag.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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package org.ow2.orchestra.designer.model {
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import mx.collections.ArrayCollection;
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import org.ow2.orchestra.designer.bpmn.model.ProcessModel;
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import org.ow2.orchestra.designer.utils.DesignerUtil;
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import org.ow2.orchestra.designer.vo.FileNavigatorProcess;
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[Bindable]
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public class ProcessEditorModel {
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//Path of the file on the server to store the process
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private var _fileNavigatorProcess:FileNavigatorProcess;
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//indicate if the process is editing in writing or no, by default true;
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private var _readWrite:Boolean;
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// Elements currently selected
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private var _selectedElements:ArrayCollection = new ArrayCollection();
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private var _processModel:ProcessModel;
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// For undo redo
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// Number of undo/redo elements to keep in memory
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private static const UNDO_REDO_QUEUE_LENGTH:int = 10;
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private var _undoState:ArrayCollection = new ArrayCollection();
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private var _redoState:ArrayCollection = new ArrayCollection();
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public function ProcessEditorModel() {
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_processModel = new ProcessModel();
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_readWrite = true;
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}
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public function get selectedElements():ArrayCollection {
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return _selectedElements;
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}
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public function set selectedElements(value:ArrayCollection):void {
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_selectedElements = value;
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}
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public function get processModel():ProcessModel {
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return _processModel;
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}
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public function set processModel(value:ProcessModel):void {
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_processModel = value;
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_selectedElements.removeAll();
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}
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public function get fileNavigatorProcess():FileNavigatorProcess {
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return DesignerModelLocator.getInstance().fileNavigatorModel.getProcess(_fileNavigatorProcess);
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}
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public function set fileNavigatorProcess(value:FileNavigatorProcess):void {
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_fileNavigatorProcess = value;
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}
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public function saveModelForUndo():void {
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_undoState.addItem(ProcessModel(DesignerUtil.copy(processModel)));
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if (_undoState.length > UNDO_REDO_QUEUE_LENGTH) {
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// undo max length is reached, remove the oldest process state
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_undoState.removeItemAt(0);
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}
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_redoState.removeAll();
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}
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public function undo():void {
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trace("Undo..");
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if (_undoState.length != 0) {
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_redoState.addItem(ProcessModel(DesignerUtil.copy(processModel)));
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processModel = ProcessModel(_undoState.removeItemAt(_undoState.length - 1));
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trace("Undo done");
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}
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}
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public function redo():void {
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if (_redoState.length != 0) {
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_undoState.addItem(ProcessModel(DesignerUtil.copy(processModel)));
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processModel = ProcessModel(_redoState.removeItemAt(_redoState.length - 1));
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}
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}
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public function set readWrite(readWrite:Boolean):void {
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_readWrite = readWrite;
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}
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public function get readWrite():Boolean {
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return _readWrite;
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}
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}
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}
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