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/*****************************************************************************
* Copyright (c) 2014 Christian W. Damus 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:
* Christian W. Damus - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.decoratormodel.internal.ui.providers;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.jface.viewers.BaseLabelProvider;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.infra.onefile.model.IPapyrusFile;
import org.eclipse.papyrus.uml.decoratormodel.helper.DecoratorModelUtils;
import org.eclipse.papyrus.uml.decoratormodel.internal.ui.Activator;
import org.eclipse.papyrus.uml.tools.model.UmlModel;
import org.eclipse.ui.ide.IDE;
import org.eclipse.uml2.uml.Package;
import org.eclipse.uml2.uml.ProfileApplication;
import com.google.common.collect.Sets;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
/**
* Label decorator for packages to indicate availability of externalized profile applications, decorator models loaded for a package, etc.
*/
public class DecoratorModelLabelDecorator extends BaseLabelProvider implements ILightweightLabelDecorator {
public DecoratorModelLabelDecorator() {
super();
}
@Override
public void decorate(Object element, IDecoration decoration) {
EObject eObject = EMFHelper.getEObject(element);
if ((eObject instanceof Package) && (eObject.eResource() != null)) {
decoratePackage((Package) eObject, decoration);
} else if (element instanceof IFile) {
decorateFile((IFile) element, decoration);
} else if (element instanceof IPapyrusFile) {
decorateFile((IPapyrusFile) element, decoration);
}
}
private void decorateFile(IFile file, IDecoration decoration) {
IContentType type = IDE.getContentType(file);
if ((type != null) && type.isKindOf(DecoratorModelUtils.DECORATOR_MODEL_CONTENT_TYPE)) {
addOverlay(decoration);
}
}
private void decorateFile(IPapyrusFile file, IDecoration decoration) {
for (IResource resource : file.getAssociatedResources()) {
if (resource.getType() == IResource.FILE) {
IContentType type = IDE.getContentType((IFile) resource);
if ((type != null) && type.isKindOf(DecoratorModelUtils.DECORATOR_MODEL_CONTENT_TYPE)) {
addOverlay(decoration);
break;
}
}
}
}
private void addOverlay(IDecoration decoration) {
decoration.addOverlay(Activator.getDefault().getIcon("full/ovr16/profileApps.png"), IDecoration.TOP_RIGHT); //$NON-NLS-1$
}
private void decoratePackage(Package package_, IDecoration decoration) {
// Root packages only, because the presentation of decorator models to display is recursive over controlled units.
// Also exclude any packages that are decorated by the main model if the main model is a decorator model
if ((package_.eContainer() == null) && !isUserOpenedDecoratorModel(package_)) {
if (!decoratePackageIcon(package_, decoration)) {
// Short-circuit the rest of the decoration of this package because we'll be revisiting it
return;
}
}
decoratePackageText(package_, decoration);
}
/**
* Is the given package the root of a model that is decorated by a decorator model opened as the main UML model of the model-set?
*/
private static boolean isUserOpenedDecoratorModel(Package package_) {
boolean result = false;
ResourceSet rset = EMFHelper.getResourceSet(package_);
if (rset instanceof ModelSet) {
UmlModel uml = (UmlModel) ((ModelSet) rset).getModel(UmlModel.MODEL_ID);
if (uml != null) {
Resource main = uml.getResource();
if (DecoratorModelUtils.isDecoratorModel(main)) {
if (DecoratorModelUtils.isDecoratorModelFor(main, package_.eResource())) {
result = true;
} else {
for (Package next : DecoratorModelUtils.getLoadedSubUnitPackages(package_)) {
if (DecoratorModelUtils.isDecoratorModelFor(main, next.eResource())) {
result = true;
break;
}
}
}
}
}
}
return result;
}
private boolean decoratePackageIcon(Package package_, IDecoration decoration) {
boolean result = false;
ListenableFuture<Boolean> hasUnloadedDecoratorModels = DecoratorModelUtils.hasUnloadedDecoratorModelsAsync(package_, true);
if (hasUnloadedDecoratorModels.isDone()) {
result = true;
if (Futures.getUnchecked(hasUnloadedDecoratorModels)) {
addOverlay(decoration);
}
result = true;
} else {
hasUnloadedDecoratorModels.addListener(postUpdate(package_), Activator.getDefault().getExecutorService());
}
return result;
}
private void decoratePackageText(Package package_, IDecoration decoration) {
// Decorate packages with a suffix listing the loaded profile application model names
Set<Package> profileApplicationModels = null;
for (ProfileApplication profileApplication : DecoratorModelUtils.getDecoratorModelProfileApplications(package_)) {
if (profileApplicationModels == null) {
profileApplicationModels = Sets.newLinkedHashSet();
}
profileApplicationModels.add((Package) EcoreUtil.getRootContainer(profileApplication));
}
if (profileApplicationModels != null) {
StringBuilder suffix = new StringBuilder();
for (Package next : profileApplicationModels) {
if (suffix.length() == 0) {
suffix.append(" ("); //$NON-NLS-1$
} else {
suffix.append(", "); //$NON-NLS-1$
}
String modelName = next.getName();
if (modelName == null) {
modelName = next.eResource().getURI().trimFileExtension().lastSegment();
}
suffix.append(modelName);
}
if (suffix.length() > 0) {
suffix.append(")"); //$NON-NLS-1$
}
if (suffix.length() > 0) {
decoration.addSuffix(suffix.toString());
}
}
}
private Runnable postUpdate(final Object element) {
return new Runnable() {
@Override
public void run() {
fireLabelProviderChanged(new LabelProviderChangedEvent(DecoratorModelLabelDecorator.this, element));
}
};
}
}
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