/**
* Copyright (c) 2013 Puppet Labs, Inc. and other contributors, as listed below.
* 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:
* Puppet Labs
*/
package com.puppetlabs.geppetto.pp.dsl.ui.jdt_ersatz;
import com.puppetlabs.geppetto.pp.dsl.ui.internal.PPDSLActivator;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IMarkerDelta;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
/**
* Simple decorator for error and warning (right now hacking/testing).
*
*/
public class AggregateErrorLabelDecorator implements ILightweightLabelDecorator {
private static String decoratorId = "com.puppetlabs.geppetto.pp.dsl.ui.errorDecorator";
private IResourceChangeListener listener = null;
private boolean useJDT;
public AggregateErrorLabelDecorator() {
useJDT = PPDSLActivator.isJavaEnabled();
if(useJDT)
return;
IWorkspace workspace = ResourcesPlugin.getWorkspace();
listener = new IResourceChangeListener() {
@Override
public void resourceChanged(IResourceChangeEvent event) {
IMarkerDelta[] markerDeltas = event.findMarkerDeltas(IMarker.PROBLEM, true);
if(markerDeltas.length > 0)
PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
@Override
public void run() {
PlatformUI.getWorkbench().getDecoratorManager().update(decoratorId);
}
});
}
};
workspace.addResourceChangeListener(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
@Override
public void addListener(ILabelProviderListener listener) {
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.ILightweightLabelDecorator#decorate(java.lang.Object, org.eclipse.jface.viewers.IDecoration)
*/
@Override
public void decorate(Object element, IDecoration decoration) {
if(useJDT)
return;
if(element instanceof IResource == false)
return;
// // should be installed for IFolder and IProject, but better check
// if(!(element instanceof IFolder || element instanceof IProject))
// return;
// get the max severity from markers
IResource resource = (IResource) element;
if(!resource.isAccessible())
return;
int severity = -1;
try {
severity = resource.findMaxProblemSeverity(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE);
}
catch(CoreException e) {
// TODO should be logged - (should not really happen)
e.printStackTrace();
}
if(severity < IMarker.SEVERITY_WARNING) {
decoration.addOverlay(null, IDecoration.BOTTOM_LEFT);
return;
}
ImageDescriptor overlay = null;
if(severity == IMarker.SEVERITY_ERROR)
overlay = getErrorImageDescriptor();
else
overlay = getWarningImageDescriptor();
decoration.addOverlay(overlay, IDecoration.BOTTOM_LEFT);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
@Override
public void dispose() {
if(listener != null)
ResourcesPlugin.getWorkspace().removeResourceChangeListener(listener);
}
private ImageDescriptor getErrorImageDescriptor() {
ImageDescriptor result = PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(
ISharedImages.IMG_DEC_FIELD_ERROR);
// TODO: remove workaround see https://bugs.eclipse.org/bugs/show_bug.cgi?id=304397
return result != null
? result
: JFaceResources.getImageRegistry().getDescriptor("org.eclipse.jface.fieldassist.IMG_DEC_FIELD_ERROR");
}
private ImageDescriptor getWarningImageDescriptor() {
ImageDescriptor result = PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(
ISharedImages.IMG_DEC_FIELD_WARNING);
// TODO: remove workaround see https://bugs.eclipse.org/bugs/show_bug.cgi?id=304397
return result != null
? result
: JFaceResources.getImageRegistry().getDescriptor("org.eclipse.jface.fieldassist.IMG_DEC_FIELD_WARNING");
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
*/
@Override
public boolean isLabelProperty(Object element, String property) {
return false;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
@Override
public void removeListener(ILabelProviderListener listener) {
}
}