/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.designer.internal.ui.editors.schematic.actions;

import org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.TableEditPart;
import org.eclipse.birt.report.designer.internal.ui.util.Policy;
import org.eclipse.birt.report.designer.nls.Messages;
import org.eclipse.ui.IWorkbenchPart;

/**
 * Merges cells action
 */
public class MergeAction extends ContextSelectionAction
{

	private static final String ACTION_MSG_MERGE = Messages.getString( "MergeAction.actionMsg.merge" ); //$NON-NLS-1$

	/** action ID */
	public static final String ID = "org.eclipse.birt.report.designer.internal.ui.editors.schematic.actions.Merge"; //$NON-NLS-1$

	/**
	 * Constructs new instance.
	 * 
	 * @param part
	 *            current work bench part
	 */
	public MergeAction( IWorkbenchPart part )
	{
		super( part );
		setId( ID );
		setText( ACTION_MSG_MERGE );
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled()
	 */
	protected boolean calculateEnabled( )
	{
		if ( getRowHandles( ).isEmpty( ) && getColumnHandles( ).isEmpty( ) )
		{
			return getTableEditPart( ) != null
					&& getTableEditPart( ).canMerge( );
		}
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.action.IAction#run()
	 */
	public void run( )
	{
		if ( Policy.TRACING_ACTIONS )
		{
			System.out.println( "Merge action >> Run ..." ); //$NON-NLS-1$
		}
		TableEditPart part = getTableEditPart( );
		if ( part != null && part.canMerge( ) )
		{
			part.merge( );
		}
	}
}