/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.guvnor.tools;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.guvnor.tools.preferences.GuvnorPreferencePage;
import org.guvnor.tools.preferences.IGuvnorPreferenceConstants;
import org.guvnor.tools.utils.GuvnorMetadataProps;
import org.guvnor.tools.utils.GuvnorMetadataUtils;
/**
* Handles decorating Guvnor resources with an icon overlay and label text.
*/
public class GuvnorDecorator implements ILightweightLabelDecorator {
public static final String DECORATOR_ID = "org.guvnor.tools.decorator"; //$NON-NLS-1$
private boolean isGuvnorResource(Object element) {
if (element instanceof IResource) {
return GuvnorMetadataUtils.findGuvnorMetadata((IResource)element) != null;
} else {
return false;
}
}
private void decorateResource(IResource resource, IDecoration decoration) {
try {
if (resource instanceof IFile) {
if(!((IFile)resource).exists()){
return ;
}
addGuvnorOverlay(decoration);
addChangeIndicator(resource, decoration);
addResourceDetails(resource, decoration);
}
} catch (Exception e) {
Activator.getDefault().writeLog(IStatus.ERROR, e.getMessage(), e);
}
}
private void addGuvnorOverlay(IDecoration decoration) {
int overlayLoc = GuvnorPreferencePage.getOverlayLocationPref();
if (overlayLoc != IGuvnorPreferenceConstants.NO_OVERLAY) {
decoration.addOverlay(Activator.getImageDescriptor(Activator.IMG_GUVCONTROLLED),
overlayLoc);
}
}
private void addResourceDetails(IResource resource, IDecoration decoration)
throws Exception {
GuvnorMetadataProps props = GuvnorMetadataUtils.getGuvnorMetadata(resource);
if (props.getVersion() != null) {
boolean showRevision = GuvnorPreferencePage.shouldShowRevision();
boolean showDateTime = GuvnorPreferencePage.shouldShowTimeDateStamp();
if (showRevision || showDateTime) {
decoration.addSuffix(" "); //$NON-NLS-1$
}
if (showRevision) {
decoration.addSuffix(props.getRevision());
}
if (showDateTime) {
if (showRevision) {
decoration.addSuffix(", " + props.getVersion()); //$NON-NLS-1$
} else {
decoration.addSuffix(props.getVersion());
}
}
}
}
private void addChangeIndicator(IResource resource, IDecoration decoration)
throws CoreException {
if (!GuvnorMetadataUtils.isGuvnorResourceCurrent(resource)
&& GuvnorPreferencePage.shouldShowChangeIndicator()) {
decoration.addSuffix(" >"); //$NON-NLS-1$
}
}
public void decorate(Object element, IDecoration decoration) {
if (isGuvnorResource(element)) {
if (element instanceof IResource) {
decorateResource((IResource)element, decoration);
} else {
Activator.getDefault().writeLog(IStatus.ERROR,
"Called to decorate unknown: " + element.getClass().toString(), new Exception()); //$NON-NLS-1$
}
}
}
public void addListener(ILabelProviderListener listener) { }
public void dispose() { }
public boolean isLabelProperty(Object element, String property) {
return false;
}
public void removeListener(ILabelProviderListener listener) { }
}