RemotelyOpenedEditorsDecorator.java

/*******************************************************************************
 * Copyright (c) 2009 Remy Chi Jian Suen 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:
 *    Remy Chi Jian Suen <remy.suen@gmail.com> - initial API and implementation
 ******************************************************************************/
package org.eclipse.ecf.sync.ui.resources.decorators;

import java.net.URL;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.ecf.internal.sync.ui.resources.SyncResourcesUI;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;

public class RemotelyOpenedEditorsDecorator implements
		ILightweightLabelDecorator {

	public static final String DECORATOR_ID = "org.eclipse.ecf.sync.ui.resources.decorators.RemotelyOpenedEditorsDecorator"; //$NON-NLS-1$

	private int quadrant = IDecoration.TOP_LEFT;

	private String iconPath = "icons/read_only.gif"; //$NON-NLS-1$
	private String iconPath2 = "icons/read_only2.gif"; //$NON-NLS-1$

	private ImageDescriptor descriptor;
	private ImageDescriptor descriptor2;

	public static Set set = new HashSet();

	public void decorate(Object element, IDecoration decoration) {
		IResource resource = (IResource) element;
		if (!set.contains(resource.getFullPath().toString())) {
			return;
		}

		if (resource instanceof IFile) {
			if (descriptor2 == null) {
				URL url = FileLocator.find(Platform
						.getBundle(SyncResourcesUI.PLUGIN_ID), new Path(
						iconPath2), null);

				if (url == null)
					return;
				descriptor2 = ImageDescriptor.createFromURL(url);
			}
			decoration.addOverlay(descriptor2, quadrant);
		} else {
			if (descriptor == null) {
				URL url = FileLocator.find(Platform
						.getBundle(SyncResourcesUI.PLUGIN_ID), new Path(
						iconPath), null);

				if (url == null)
					return;
				descriptor = ImageDescriptor.createFromURL(url);
			}
			decoration.addOverlay(descriptor, quadrant);
		}
	}

	public void addListener(ILabelProviderListener listener) {
	}

	public void dispose() {
	}

	public boolean isLabelProperty(Object element, String property) {
		return false;
	}

	public void removeListener(ILabelProviderListener listener) {
	}
}