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/*
* Copyright (c) 2010-2012 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.explorer.ui;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.explorer.CDORepository;
import org.eclipse.emf.cdo.explorer.CDORepositoryManager.RepositoryConnectionEvent;
import org.eclipse.emf.cdo.ui.shared.SharedIcons;
import org.eclipse.net4j.util.container.IContainer;
import org.eclipse.net4j.util.event.IEvent;
import org.eclipse.net4j.util.event.IListener;
import org.eclipse.net4j.util.ui.UIUtil;
import org.eclipse.net4j.util.ui.actions.LongRunningAction;
import org.eclipse.net4j.util.ui.views.ContainerItemProvider;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
/**
* @author Eike Stepper
*/
public class CDORepositoryItemProvider extends ContainerItemProvider<IContainer<Object>>
{
private static final Image IMAGE_REPO = SharedIcons.getImage(SharedIcons.OBJ_REPO);
private static final Image IMAGE_BRANCH = SharedIcons.getImage(SharedIcons.OBJ_BRANCH);
private static final Color COLOR_DRAK_GRAY = UIUtil.getDisplay().getSystemColor(SWT.COLOR_DARK_GRAY);
private final Image imageRepoDisconnected = new Image(UIUtil.getDisplay(), IMAGE_REPO, SWT.IMAGE_GRAY);
private final IListener repositoryManagerListener = new IListener()
{
public void notifyEvent(IEvent event)
{
if (event instanceof RepositoryConnectionEvent)
{
RepositoryConnectionEvent e = (RepositoryConnectionEvent)event;
CDORepository repository = e.getRepository();
TreeViewer viewer = getViewer();
if (!e.isConnected())
{
ViewerUtil.expand(viewer, repository, false);
}
ViewerUtil.refresh(viewer, repository);
// if (e.isConnected())
// {
// ViewerUtil.setExpandedState(viewer, repository, true);
// }
}
}
};
public CDORepositoryItemProvider()
{
}
@Override
public void dispose()
{
imageRepoDisconnected.dispose();
super.dispose();
}
@Override
public TreeViewer getViewer()
{
return (TreeViewer)super.getViewer();
}
@Override
public boolean hasChildren(Object element)
{
if (element instanceof CDORepository)
{
CDORepository repository = (CDORepository)element;
if (!repository.isConnected())
{
return false;
}
}
return super.hasChildren(element);
}
@Override
public Object[] getChildren(Object element)
{
if (element instanceof CDORepository)
{
CDORepository repository = (CDORepository)element;
if (!repository.isConnected())
{
return ViewerUtil.NO_CHILDREN;
}
}
return super.getChildren(element);
}
@Override
public String getText(Object element)
{
if (element instanceof CDORepository)
{
CDORepository repository = (CDORepository)element;
return repository.getLabel();
}
if (element instanceof CDOBranch)
{
CDOBranch branch = (CDOBranch)element;
return branch.getName();
}
return super.getText(element);
}
@Override
public Image getImage(Object obj)
{
if (obj instanceof CDORepository)
{
CDORepository repository = (CDORepository)obj;
if (!repository.isConnected())
{
return imageRepoDisconnected;
}
return IMAGE_REPO;
}
if (obj instanceof CDOBranch)
{
return IMAGE_BRANCH;
}
return super.getImage(obj);
}
@Override
public Color getForeground(Object obj)
{
if (obj instanceof CDORepository)
{
CDORepository repository = (CDORepository)obj;
if (!repository.isConnected())
{
return COLOR_DRAK_GRAY;
}
}
return super.getForeground(obj);
}
@Override
public void fillContextMenu(IMenuManager manager, ITreeSelection selection)
{
super.fillContextMenu(manager, selection);
if (selection.size() == 1)
{
Object obj = selection.getFirstElement();
if (obj instanceof CDORepository)
{
manager.add(new DisconnectAction((CDORepository)obj));
}
}
}
@Override
protected boolean isSlow(IContainer<Object> container)
{
return true;
}
@Override
protected String getSlowText(IContainer<Object> container)
{
if ((IContainer<?>)container instanceof CDORepository)
{
return "Connecting...";
}
return "Loading...";
}
// @Override
// protected void handleInactiveElement(Iterator<org.eclipse.net4j.util.ui.views.ContainerItemProvider.Node> it,
// org.eclipse.net4j.util.ui.views.ContainerItemProvider.Node child)
// {
// // Do nothing.
// }
@Override
protected void connectInput(IContainer<Object> input)
{
super.connectInput(input);
input.addListener(repositoryManagerListener);
}
@Override
protected void disconnectInput(IContainer<Object> input)
{
input.removeListener(repositoryManagerListener);
super.disconnectInput(input);
}
/**
* @author Eike Stepper
*/
public static class DisconnectAction extends LongRunningAction
{
private CDORepository repository;
public DisconnectAction(CDORepository repository)
{
super("Disconnect");
this.repository = repository;
}
@Override
protected void doRun(IProgressMonitor progressMonitor) throws Exception
{
repository.disconnect();
}
}
}
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