/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.ui.editpolicies;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.requests.DirectEditRequest;
import org.whole.lang.model.IEntity;
import org.whole.lang.parsers.DataTypeParsers;
import org.whole.lang.parsers.IDataTypeParser;
import org.whole.lang.ui.commands.ModelTransactionCommand;
import org.whole.lang.ui.figures.IEntityFigure;
import org.whole.lang.util.DataTypeUtils;
/**
* @author Riccardo Solmi
*/
public class DataEntityDirectEditPolicy extends DirectEditPolicy {
@Override
protected Label getHostFigure() {
IFigure f = super.getHostFigure();
if (f instanceof Label)
return (Label) f;
else
return (Label) (((IEntityFigure) f).getContentPane(0));
}
protected final String getCellEditorValue(DirectEditRequest request) {
return (String) request.getCellEditor().getValue();
}
protected void showCurrentEditValue(DirectEditRequest request) {
getHostFigure().setText(getCellEditorValue(request));
}
protected Command getDirectEditCommand(DirectEditRequest request) {
IEntity hostEntity = (IEntity) getHost().getModel();
IDataTypeParser parser = DataTypeUtils.getDataTypeParser(hostEntity, DataTypeParsers.PRESENTATION);
try {
return getDirectEditCommand(hostEntity, getCellEditorValue(request), parser);
} catch (Exception e) {
return UnexecutableCommand.INSTANCE;
}
}
protected Command getDirectEditCommand(IEntity hostEntity, String value, IDataTypeParser parser) {
ModelTransactionCommand command = new ModelTransactionCommand(hostEntity);
try {
command.begin();
hostEntity.wSetValue(parser.parse(hostEntity.wGetEntityDescriptor(), value));
command.commit();
return command;
} catch (Exception e) {
command.rollbackIfNeeded();
return UnexecutableCommand.INSTANCE;
}
}
}