/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.sds.util;

import org.csstudio.sds.ui.SdsUiPlugin;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.widgets.Control;

/**
 * A util class to set the dialog font, if this is set in the preference page.
 * Use only temporarily (24.10.07) 
 * @author Kai Meyer
 *
 * @deprecated because the default dialog font should be used (23.11.2007) 
 */
@Deprecated
public final class DialogFontUtil {

	/**
	 * A boolean, representing if the dialog font should be used.
	 */
	private static boolean _useDialogFont = false;
	/**
	 * A boolean, representing if the preference listener is initialized.
	 */
	private static boolean _listenerIsInitialized = false;
	/**
	 * The listener for the preference page.
	 */
	private static IPropertyChangeListener _listener;
	
	/**
	 * Sets the default dialog font on the given control and its children, only
	 * when the preference-page allows this.  
	 * @param control The control on which the font should be set
	 */
	public static void setDialogFont(final Control control) {
		if (!_listenerIsInitialized) {
			initializeListener();
		}
		if (_useDialogFont) {
//			Dialog.applyDialogFont(control);
		}
	}

	/**
	 * Initializes the preference listener. 
	 */
	private static void initializeListener() {
		_listener = new IPropertyChangeListener() {
			@Override
			public void propertyChange(final PropertyChangeEvent event) {
//				if (event.getProperty().equals(PreferenceConstants.PROP_USE_DIALOG_FONT)) {
//					_useDialogFont = (Boolean) event.getNewValue();
//				}
			}		
		};
		SdsUiPlugin.getCorePreferenceStore().addPropertyChangeListener(_listener);
//		_useDialogFont = SdsUiPlugin.getCorePreferenceStore().getBoolean(PreferenceConstants.PROP_USE_DIALOG_FONT);
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void finalize() throws Throwable {
		SdsUiPlugin.getCorePreferenceStore().removePropertyChangeListener(_listener);
		super.finalize();
	}

}