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/*******************************************************************************
* Copyright (c) 2009, 2011 Wind River Systems and others.
* 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.viewers.model;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IBaseLabelProvider;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.RGB;
/**
* {@link InternalTreeModelViewer} label provider interface. In addition to
* implementing this interface, the label provider for the TreeModelViewer
* must also extend CellLabelProvider.
*
* @since 3.5
*/
public interface ITreeModelLabelProvider extends IBaseLabelProvider {
/**
* Requests an label update label of the given element.
* @param elementPath Element to update.
* @return true if element label provider is found and update will
* be requested.
*/
boolean update(TreePath elementPath);
/**
* Registers the specified listener for view label update notifications.
* @param listener Listener to add
*/
void addLabelUpdateListener(ILabelUpdateListener listener);
/**
* Removes the specified listener from view label update notifications.
* @param listener Listener to remove
*/
void removeLabelUpdateListener(ILabelUpdateListener listener);
/**
* Returns an image for the given image descriptor or <code>null</code>. Adds the image
* to a cache of images if it does not already exist.
*
* @param descriptor image descriptor or <code>null</code>
* @return image or <code>null</code>
*/
Image getImage(ImageDescriptor descriptor);
/**
* Returns a font for the given font data or <code>null</code>. Adds the font to the font
* cache if not yet created.
*
* @param fontData font data or <code>null</code>
* @return font font or <code>null</code>
*/
Font getFont(FontData fontData);
/**
* Returns a color for the given RGB or <code>null</code>. Adds the color to the color
* cache if not yet created.
*
* @param rgb RGB or <code>null</code>
* @return color or <code>null</code>
*/
Color getColor(RGB rgb);
}
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