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/*******************************************************************************
* Copyright (c) 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.yocto.bc.ui.decorators;
import java.net.URL;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourceAttributes;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
/**
* An example showing how to control when an element is decorated. This example
* decorates only elements that are instances of IResource and whose attribute
* is 'Read-only'.
*
* @see ILightweightLabelDecorator
*/
public class ReadOnly implements ILightweightLabelDecorator {
/**
* String constants for the various icon placement options from the template
* wizard.
*/
public static final String TOP_RIGHT = "TOP_RIGHT";
public static final String TOP_LEFT = "TOP_LEFT";
public static final String BOTTOM_RIGHT = "BOTTOM_RIGHT";
public static final String BOTTOM_LEFT = "BOTTOM_LEFT";
public static final String UNDERLAY = "UNDERLAY";
/** The integer value representing the placement options */
private int quadrant;
/** The icon image location in the project folder */
private String iconPath = "icons/read_only.gif"; //NON-NLS-1
/**
* The image description used in
* <code>addOverlay(ImageDescriptor, int)</code>
*/
private ImageDescriptor descriptor;
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ILightweightLabelDecorator#decorate(java.lang.Object, org.eclipse.jface.viewers.IDecoration)
*/
public void decorate(Object element, IDecoration decoration) {
/**
* Checks that the element is an IResource with the 'Read-only' attribute
* and adds the decorator based on the specified image description and the
* integer representation of the placement option.
*/
IResource resource = (IResource) element;
ResourceAttributes attrs = resource.getResourceAttributes();
if(attrs!=null) {
if (attrs.isReadOnly()){
URL url = Platform.find(
Platform.getBundle("org.yocto.bc.ui"), new Path(iconPath)); //NON-NLS-1
if (url == null)
return;
descriptor = ImageDescriptor.createFromURL(url);
quadrant = IDecoration.TOP_RIGHT;
decoration.addOverlay(descriptor,quadrant);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
public void addListener(ILabelProviderListener listener) {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
*/
public boolean isLabelProperty(Object element, String property) {
return false;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
public void removeListener(ILabelProviderListener listener) {
}
}
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