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/*
* Copyright (c) 2013 Eike Stepper (Berlin, Germany) 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 (CEA LIST) - initial API and implementation
*/
package org.eclipse.emf.cdo.security.internal.ui.handlers;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.security.internal.ui.editor.CDOSecurityFormEditor;
import org.eclipse.emf.cdo.security.internal.ui.messages.Messages;
import org.eclipse.emf.cdo.security.ui.ISecurityManagementContext;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.ui.CDOEditorInput;
import org.eclipse.emf.cdo.ui.CDOEditorUtil;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.net4j.util.ui.UIUtil;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.statushandlers.StatusManager;
import java.util.Set;
/**
* "Manage Security" command handler, which opens the Security Manager editor
* in the context of the currently selected {@link CDOSession}, with the help
* of an optional {@link ISecurityManagementContext} adapter.
*
* @author Christian W. Damus (CEA LIST)
*/
public class ManageSecurityHandler extends AbstractHandler
{
public ManageSecurityHandler()
{
}
public Object execute(ExecutionEvent event) throws ExecutionException
{
ISelection selection = HandlerUtil.getCurrentSelection(event);
CDOSession session = UIUtil.adaptElement(selection, CDOSession.class);
if (session != null && !session.isClosed())
{
IWorkbenchPart part = HandlerUtil.getActivePart(event);
if (part != null)
{
final IWorkbenchPage page = part.getSite().getPage();
IEditorPart existing = findEditor(page, session);
if (existing != null)
{
// Activate this editor
page.activate(existing);
}
else
{
// Open a new security editor
ISecurityManagementContext context = getContext(event);
CDOView view = context.connect(session);
if (view == null || view.isClosed())
{
MessageDialog.openWarning(HandlerUtil.getActiveShell(event), Messages.ManageSecurityHandler_0,
Messages.ManageSecurityHandler_1);
}
else
{
try
{
CDOResource resource = context.getSecurityResource(view);
if (resource == null)
{
MessageDialog.openWarning(HandlerUtil.getActiveShell(event), Messages.ManageSecurityHandler_0,
Messages.ManageSecurityHandler_2);
}
else
{
IEditorInput input = CDOEditorUtil.createCDOEditorInput(view, resource.getPath(), false);
try
{
IEditorPart editor = page.openEditor(input, CDOSecurityFormEditor.ID);
if (editor != null)
{
hookCloseListener(editor, context, view);
view = null; // Don't disconnect it until later
}
}
catch (PartInitException e)
{
StatusManager.getManager().handle(e.getStatus(), StatusManager.SHOW);
}
}
}
finally
{
if (view != null)
{
context.disconnect(view);
}
}
}
}
}
}
return null;
}
IEditorPart findEditor(IWorkbenchPage page, CDOSession session)
{
for (IEditorReference next : page.getEditorReferences())
{
if (CDOSecurityFormEditor.ID.equals(next.getId()))
{
IEditorPart candidate = next.getEditor(false);
if (candidate != null)
{
IEditorInput input = candidate.getEditorInput();
if (input instanceof CDOEditorInput)
{
CDOView view = ((CDOEditorInput)input).getView();
if (view != null && !view.isClosed() && session.equals(view.getSession()))
{
return candidate;
}
}
}
}
}
return null;
}
ISecurityManagementContext getContext(ExecutionEvent event)
{
ISecurityManagementContext result = null;
IWorkbenchPart part = HandlerUtil.getActivePart(event);
if (part != null)
{
result = (ISecurityManagementContext)part.getAdapter(ISecurityManagementContext.class);
}
if (result == null)
{
result = ISecurityManagementContext.DEFAULT;
}
return result;
}
private void hookCloseListener(final IEditorPart editor, final ISecurityManagementContext context, final CDOView view)
{
final IWorkbenchPage page = editor.getSite().getPage();
page.addPartListener(new IPartListener()
{
private final IEditorInput input = editor.getEditorInput();
private final Set<IEditorPart> openEditors = new java.util.HashSet<IEditorPart>();
{
openEditors.add(editor);
}
public void partClosed(IWorkbenchPart part)
{
openEditors.remove(part);
if (openEditors.isEmpty())
{
// No more editors using this view
context.disconnect(view);
page.removePartListener(this);
}
}
public void partOpened(IWorkbenchPart part)
{
if (part instanceof IEditorPart)
{
IEditorPart editor = (IEditorPart)part;
if (input.equals(editor.getEditorInput()))
{
// The user opened the advanced-mode editor from the form editor
openEditors.add(editor);
}
}
}
public void partDeactivated(IWorkbenchPart part)
{
// Pass
}
public void partBroughtToTop(IWorkbenchPart part)
{
// Pass
}
public void partActivated(IWorkbenchPart part)
{
// Pass
}
});
}
}
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