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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.menu.actions.handlers;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.papyrus.uml.diagram.common.handlers.ParametricAndListeningHandler;
import org.eclipse.papyrus.uml.diagram.common.layout.LayoutUtils;
import org.eclipse.papyrus.uml.diagram.menu.actions.CustomAlignAction;
/**
*
* Handler for the AlignmentAction
*
*/
public class AlignementHandler extends ParametricAndListeningHandler {
/**
*
* Constructor.
*
*/
public AlignementHandler() {
super("org.eclipse.papyrus.uml.diagram.menu.commandAlignmentParameter"); //$NON-NLS-1$
}
/**
*
* @see org.eclipse.papyrus.uml.diagram.common.handlers.GraphicalCommandHandler#getCommand()
*
* @return
* @throws ExecutionException
*/
@Override
protected Command getCommand() {
super.getCommand();
CustomAlignAction action = new CustomAlignAction(getAlignment(this.parameter), this.getSelectedElements());
Command cmd = action.getCommand();
return (cmd == null) ? UnexecutableCommand.INSTANCE : cmd;
}
/**
*
* @param param
* the parameter for the alignment action
* @return
* the value represented by this parameter, this valu can be :
* <ul>
* <li>{@link PositionConstants#NONE}</li>
* <li>{@link PositionConstants#TOP}</li>
* <li>{@link PositionConstants#BOTTOM}</li>
* <li>{@link PositionConstants#MIDDLE}</li>
* <li>{@link PositionConstants#LEFT}</li>
* <li>{@link PositionConstants#RIGHT}</li>
* <li>{@link PositionConstants#CENTER}</li>
* </ul>
*/
public int getAlignment(String param) {
if (param.equals(LayoutUtils.LEFT)) {
return PositionConstants.LEFT;
} else if (param.equals(LayoutUtils.CENTER)) {
return PositionConstants.CENTER;
} else if (param.equals(LayoutUtils.RIGHT)) {
return PositionConstants.RIGHT;
} else if (param.equals(LayoutUtils.BOTTOM)) {
return PositionConstants.BOTTOM;
} else if (param.equals(LayoutUtils.MIDDLE)) {
return PositionConstants.MIDDLE;
} else if (param.equals(LayoutUtils.TOP)) {
return PositionConstants.TOP;
}
return PositionConstants.NONE;
}
}
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