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/*****************************************************************************
* Copyright (c) 2013 CEA LIST.
*
* 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:
* CEA LIST - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.cdo.internal.ui.editors;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.net4j.util.lifecycle.ILifecycle;
import org.eclipse.net4j.util.lifecycle.LifecycleEventAdapter;
import org.eclipse.papyrus.cdo.core.IPapyrusRepository;
import org.eclipse.papyrus.cdo.core.IResourceSetDisposalApprover;
import org.eclipse.papyrus.cdo.internal.core.IInternalPapyrusRepository;
import org.eclipse.papyrus.cdo.internal.core.PapyrusRepositoryManager;
import org.eclipse.papyrus.cdo.internal.ui.Activator;
import org.eclipse.papyrus.cdo.internal.ui.l10n.Messages;
import org.eclipse.papyrus.cdo.internal.ui.util.UIUtil;
import org.eclipse.papyrus.editor.PapyrusMultiDiagramEditor;
import org.eclipse.papyrus.infra.core.services.ServicesRegistry;
import org.eclipse.papyrus.infra.core.utils.EditorUtils;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PartInitException;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
/**
* This is the PapyrusCDOEditorManager type. Enjoy.
*/
public class PapyrusCDOEditorManager {
public static final PapyrusCDOEditorManager INSTANCE = new PapyrusCDOEditorManager();
private final BiMap<IEditorPart, CDOView> editors = HashBiMap.create();
private final Cache<IWorkbenchPage, EditorListener> editorListeners = CacheBuilder.newBuilder().weakKeys().build(new CacheLoader<IWorkbenchPage, EditorListener>() {
@Override
public EditorListener load(IWorkbenchPage key) {
EditorListener result = new EditorListener();
key.addPartListener(result);
return result;
}
});
private IResourceSetDisposalApprover disposalApprover;
private PapyrusCDOEditorManager() {
super();
}
public IEditorPart openEditor(IWorkbenchPage page, URI uri, String name) throws PartInitException {
return openEditor(page, new PapyrusCDOEditorInput(uri, name));
}
public IEditorPart openEditor(IWorkbenchPage page, IEditorInput input) throws PartInitException {
URI uri = EditorUtils.getResourceURI(input);
IInternalPapyrusRepository repository = getRepository(uri);
repository.addResourceSetDisposalApprover(getDisposalApprover());
IEditorPart result = page.openEditor(input, PapyrusMultiDiagramEditor.EDITOR_ID);
EditingDomain domain = (EditingDomain)result.getAdapter(EditingDomain.class);
ResourceSet resourceSet = domain.getResourceSet();
CDOView view = repository.getCDOView(resourceSet);
add(view, result);
if(view instanceof CDOTransaction) {
ServicesRegistry services = (ServicesRegistry)result.getAdapter(ServicesRegistry.class);
view.addListener(new PapyrusTransactionListener(services, resourceSet));
}
return result;
}
private IResourceSetDisposalApprover getDisposalApprover() {
if(disposalApprover == null) {
disposalApprover = new ResourceSetDisposalApprover();
}
return disposalApprover;
}
IInternalPapyrusRepository getRepository(URI uri) {
return PapyrusRepositoryManager.INSTANCE.getRepositoryForURI(uri);
}
void add(CDOView view, final IEditorPart editor) {
editors.put(editor, view);
view.addListener(new CDOViewListener(editor));
try {
editorListeners.get(editor.getSite().getPage(), new Callable<EditorListener>() {
public EditorListener call() throws Exception {
//Probably not necessary. But the previous API is deprecated. It is probably safer
//to return a non-null EditorListener, but we're not supposed to enter this method anyway
EditorListener listener = new EditorListener();
editor.getSite().getPage().addPartListener(listener);
return listener;
}
}).addEditor(editor);
} catch (Exception e) {
// this should be impossible with our cache loader
Activator.log.error(e);
}
}
void closed(IEditorPart editor) {
editors.remove(editor);
DawnEditorAdapter.removeAdapter(editor);
}
//
// Nested types
//
private class CDOViewListener extends LifecycleEventAdapter {
private final IEditorPart editor;
CDOViewListener(IEditorPart editor) {
this.editor = editor;
}
@Override
protected void onDeactivated(ILifecycle lifecycle) {
UIUtil.later(new Runnable() {
public void run() {
if(editors.containsKey(editor)) {
editor.getSite().getPage().closeEditor(editor, false);
}
}
});
lifecycle.removeListener(this);
}
}
private class EditorListener implements IPartListener {
private final Set<IEditorPart> editors = Sets.newHashSet();
void addEditor(IEditorPart editor) {
editors.add(editor);
}
public void partClosed(IWorkbenchPart part) {
if(editors.remove(part)) {
IEditorPart editor = (IEditorPart)part;
closed(editor);
}
}
public void partActivated(IWorkbenchPart part) {
// pass
}
public void partBroughtToTop(IWorkbenchPart part) {
// pass
}
public void partDeactivated(IWorkbenchPart part) {
// pass
}
public void partOpened(IWorkbenchPart part) {
// pass
}
}
private class ResourceSetDisposalApprover implements IResourceSetDisposalApprover {
public DisposeAction disposalRequested(IPapyrusRepository repository, Collection<ResourceSet> resourceSets) {
DisposeAction result = DisposeAction.CLOSE;
IInternalPapyrusRepository internal = (IInternalPapyrusRepository)repository;
final List<IEditorPart> dirty = Lists.newArrayList();
for(ResourceSet next : resourceSets) {
CDOView view = internal.getCDOView(next);
IEditorPart editor = editors.inverse().get(view);
if((editor != null) && editor.isDirty()) {
dirty.add(editor);
}
}
if(!dirty.isEmpty()) {
Future<Integer> dlgResult = UIUtil.call(new Callable<Integer>() {
public Integer call() {
MessageDialog dlg = new MessageDialog(dirty.get(0).getSite().getShell(), Messages.PapyrusCDOEditorManager_1, null, Messages.PapyrusCDOEditorManager_2, MessageDialog.QUESTION_WITH_CANCEL, //
new String[]{ IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL }, 2);
return dlg.open();
}
});
try {
switch(dlgResult.get()) {
case 0: // Yes
result = DisposeAction.SAVE;
break;
case 1: // No
result = DisposeAction.CLOSE;
break;
case 2: // Cancel
result = DisposeAction.NONE;
break;
default:
break;
}
} catch (Exception e) {
// shouldn't happen because the UIUtil doesn't support
// interruption as it runs stuff on the UI thread
Activator.log.error(e);
}
}
return result;
}
}
}
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