/*******************************************************************************
* Copyright (c) 2003, 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.activities.ws;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jface.resource.DeviceResourceException;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.activities.IActivity;
import org.eclipse.ui.activities.ICategory;
import org.eclipse.ui.activities.NotDefinedException;
/**
* Provides labels for elements drawn from <code>IActivityManagers</code>.
* Ie: <code>IActivity</code> and <code>ICategory</code> objects.
*
* @since 3.0
*/
public class ActivityCategoryLabelProvider extends LabelProvider {
private LocalResourceManager manager;
private Map descriptorMap = new HashMap();
/**
* Create a new instance of this class.
*/
public ActivityCategoryLabelProvider() {
manager = new LocalResourceManager(JFaceResources.getResources());
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
*/
public Image getImage(Object element) {
try {
ImageDescriptor descriptor = getDescriptor(element);
if (descriptor != null) {
return manager.createImage(descriptor);
}
}
catch (DeviceResourceException e) {
//ignore
}
return null;
}
private ImageDescriptor getDescriptor(Object element) {
ImageDescriptor descriptor = (ImageDescriptor) descriptorMap.get(element);
if (descriptor != null) {
return descriptor;
}
if (element instanceof ICategory) {
ICategory category = (ICategory) element;
descriptor = PlatformUI.getWorkbench().getActivitySupport()
.getImageDescriptor(category);
if (descriptor != null) {
descriptorMap.put(element, descriptor);
}
} else if (element instanceof IActivity) {
IActivity activity = (IActivity) element;
descriptor = PlatformUI.getWorkbench().getActivitySupport()
.getImageDescriptor(activity);
if (descriptor != null) {
descriptorMap.put(element, descriptor);
}
}
return descriptor;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
*/
public String getText(Object element) {
if (element instanceof IActivity) {
IActivity activity = (IActivity) element;
try {
return activity.getName();
} catch (NotDefinedException e) {
return activity.getId();
}
} else if (element instanceof ICategory) {
ICategory category = ((ICategory) element);
try {
return category.getName();
} catch (NotDefinedException e) {
return category.getId();
}
}
return super.getText(element);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
public void dispose() {
manager.dispose();
descriptorMap.clear();
}
}