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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.decorators;
import java.net.URL;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.ui.internal.util.BundleUtility;
/**
* The DeclarativeDecorator is a decorator that is made entirely from an XML
* specification.
*/
public class DeclarativeDecorator implements ILightweightLabelDecorator {
private String iconLocation;
private IConfigurationElement configElement;
private ImageDescriptor descriptor;
DeclarativeDecorator(IConfigurationElement definingElement, String iconPath) {
this.iconLocation = iconPath;
this.configElement = definingElement;
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
public void addListener(ILabelProviderListener listener) {
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
public void dispose() {
//Nothing to do here
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object,
* java.lang.String)
*/
public boolean isLabelProperty(Object element, String property) {
return false;
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
public void removeListener(ILabelProviderListener listener) {
}
/**
* @see org.eclipse.jface.viewers.ILightweightLabelDecorator#decorate(java.lang.Object,
* org.eclipse.jface.viewers.IDecoration)
*/
public void decorate(Object element, IDecoration decoration) {
if (descriptor == null) {
URL url = BundleUtility.find(configElement.getDeclaringExtension()
.getNamespace(), iconLocation);
if (url == null) {
return;
}
descriptor = ImageDescriptor.createFromURL(url);
}
decoration.addOverlay(descriptor);
}
}
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