/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

package com.nokia.s60tools.swmtanalyser.ui.graphs;

import org.eclipse.jface.action.IAction;

/**

 * Common abstract base class for graphs that support zoom operations.

 */

public abstract class ZoomableGraph {

	/**

	 * Context menu title for action: Zoom In

	 */

	protected static final String ZOOM_IN_CONTEXT_MENU_TITLE = "Zoom In";

	/**

	 * Context menu title for action: Zoom Out

	 */

	protected static final String ZOOM_OUT_CONTEXT_MENU_TITLE = "Zoom Out";

	/**

	 * Copy -action

	 */

	protected IAction copy;

	/**

	 * Zoom In -action

	 */

	protected IAction zoomIn;

	/**

	 * Zoom Out -action

	 */

	protected IAction zoomOut;

	/**

	 * This method zooms in the graph area.

	 */

	protected abstract void zoomIn();

	/**

	 * This method zooms out the graph area.

	 */

	protected abstract void zoomOut();

	/**

	 * Sets given enable state for an action if it is non <code>null</code>.

	 * @param action Action to set enable status for.

	 * @param enableStatus <code>true</code> if enabled, otherwise <code>false</code>.

	 */

	protected void setEnableState(IAction action, boolean enableStatus) {

		if(action != null){

			action.setEnabled(enableStatus);			

		}

	}

}