SuspendOnActionDelegate.java

/**
 * This file Copyright (c) 2005-2008 Aptana, Inc. This program is
 * dual-licensed under both the Aptana Public License and the GNU General
 * Public license. You may elect to use one or the other of these licenses.
 * 
 * This program is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT. Redistribution, except as permitted by whichever of
 * the GPL or APL you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or modify this
 * program under the terms of the GNU General Public License,
 * Version 3, as published by the Free Software Foundation.  You should
 * have received a copy of the GNU General Public License, Version 3 along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Aptana provides a special exception to allow redistribution of this file
 * with certain other free and open source software ("FOSS") code and certain additional terms
 * pursuant to Section 7 of the GPL. You may view the exception and these
 * terms on the web at http://www.aptana.com/legal/gpl/.
 * 
 * 2. For the Aptana Public License (APL), this program and the
 * accompanying materials are made available under the terms of the APL
 * v1.0 which accompanies this distribution, and is available at
 * http://www.aptana.com/legal/apl/.
 * 
 * You may view the GPL, Aptana's exception and additional terms, and the
 * APL in the file titled license.html at the root of the corresponding
 * plugin containing this source file.
 * 
 * Any modifications to this file must keep this entire header intact.
 */
package com.aptana.ide.debug.internal.ui.actions;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;

import com.aptana.ide.debug.core.model.IJSDebugTarget;

/**
 * @author Max Stepanov
 */
public class SuspendOnActionDelegate implements IViewActionDelegate
{
	private IJSDebugTarget selectedTarget;

	/**
	 * @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
	 */
	public void init(IViewPart view)
	{
	}

	/**
	 * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
	 */
	public void run(IAction action)
	{
		if (selectedTarget != null)
		{
			boolean checked = action.isChecked();
			selectedTarget.setAttribute(getActionOption(action), Boolean.toString(checked));
		}
	}

	/**
	 * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction,
	 *      org.eclipse.jface.viewers.ISelection)
	 */
	public void selectionChanged(IAction action, ISelection selection)
	{
		boolean enabled = false;
		boolean checked = false;
		selectedTarget = null;
		if (selection instanceof IStructuredSelection)
		{
			Object selectedObject = ((IStructuredSelection) selection).getFirstElement();
			if (selectedObject instanceof IAdaptable)
			{
				IDebugTarget target = (IDebugTarget) ((IAdaptable) selectedObject).getAdapter(IDebugTarget.class);
				if (target instanceof IJSDebugTarget && !((IDebugTarget) target).isDisconnected())
				{
					enabled = true;
					selectedTarget = (IJSDebugTarget) target;
					String attribute = selectedTarget.getAttribute(getActionOption(action));
					checked = Boolean.valueOf(attribute).booleanValue();
				}
			}
		}
		action.setChecked(checked);
		action.setEnabled(enabled);
	}

	private String getActionOption(IAction action)
	{
		String id = action.getId();
		int index = id.lastIndexOf('.');
		if (index > 0)
		{
			id = id.substring(index + 1);
		}
		return id;
	}
}