org.eclipse.viatra2.gui/src/org/eclipse/viatra2/frameworkgui/views/console/ToggleAction.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Istvan Rath and Daniel Varro
 * 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:
 *    Istvan Rath - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.frameworkgui.views.console;

import java.lang.reflect.Field;

import org.eclipse.jface.action.Action;

/**
 * Super reflective toggle action class to be used for the console view.
 * @author istvan rath
 *
 */
public class ToggleAction extends Action {

	
	public ToggleAction(ConsoleView v, String text, String attrName) 
	{
		cv=v;
		targetName=attrName;
		initField();
		setChecked(getCurrentValue());
		setText(text);
		this.setToolTipText("Toggle on/off");
//		this.setImageDescriptor(FrameworkGUIPlugin.getImageDescriptor("icons/buffer_on.png"));
//		this.setDisabledImageDescriptor(FrameworkGUIPlugin.getImageDescriptor("icons/buffer_off.png"));
	}
	
	
	ConsoleView cv;

	String targetName;
	
	Field f;
	
	private void initField() {
		try {
			f = cv.getClass().getDeclaredField(targetName);
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (NoSuchFieldException e) {
			e.printStackTrace();
		}	
	}
	
	
	private Boolean getCurrentValue() {
		try {
			return f.getBoolean(cv);
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
		return false;
	}
	
	@Override
	public void run() 
	{
		boolean b = getCurrentValue();
		try {
			f.setBoolean(cv, new Boolean(! b));
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
		b = getCurrentValue();
		if (b)
		{
			setChecked(true);
			setToolTipText("On");
		}
		else
		{
			setChecked(false);
			setToolTipText("Off");
		}
		cv.getViewSite().getActionBars().getToolBarManager().update(true);
	}
}