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1   /**********************************************
2    * Copyright (C) 2011 Lukas Laag
3    * This file is part of svgreal.
4    * 
5    * svgreal is free software: you can redistribute it and/or modify
6    * it under the terms of the GNU General Public License as published by
7    * the Free Software Foundation, either version 3 of the License, or
8    * (at your option) any later version.
9    * 
10   * svgreal is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   * GNU General Public License for more details.
14   * 
15   * You should have received a copy of the GNU General Public License
16   * along with svgreal.  If not, see http://www.gnu.org/licenses/
17   **********************************************/
18  package org.vectomatic.svg.edit.client.command;
19  
20  import java.util.Map;
21  
22  import org.vectomatic.svg.edit.client.engine.SVGModel;
23  import org.vectomatic.svg.edit.client.event.StoreEventProcessor;
24  import org.vectomatic.svg.edit.client.model.svg.SVGElementModel;
25  
26  import com.extjs.gxt.ui.client.store.Record;
27  import com.extjs.gxt.ui.client.store.Record.RecordUpdate;
28  import com.extjs.gxt.ui.client.store.StoreEvent;
29  import com.google.gwt.core.client.GWT;
30  
31  /**
32   * Base class for command factories which edit an existing SVG element model
33   * @author laaglu
34   */
35  public abstract class EditCommandFactoryBase extends CommandFactoryBase implements StoreEventProcessor {
36  	@Override
37  	public boolean processStoreEvent(StoreEvent<SVGElementModel> se) {
38  		GWT.log("EditCommandFactoryBase.processStoreEvent: " + se.getOperation());
39  		Record record = se.getRecord();
40  		if (record != null && se.getOperation() != RecordUpdate.COMMIT) {
41  			Map<String, Object> changes = record.getChanges();
42  			for(Map.Entry<String, Object> change : changes.entrySet()) {
43  				GWT.log("Change: " + change.getKey() + " = " + change.getValue());
44  			}
45  			SVGElementModel model = (SVGElementModel)record.getModel();
46  			SVGModel owner = model.getOwner();
47  			if (owner != null) {
48  				owner.getCommandStore().addCommand(createCommand(model, changes));
49  			}
50  			return true;
51  		}
52  		return false;
53  	}
54  
55  	protected abstract ICommand createCommand(SVGElementModel model, Map<String, Object> changes);
56  }