/*
* Copyright (c) 2011, 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:
* Martin Fluegge - initial API and implementation
*/
package org.eclipse.emf.cdo.dawn.ui.composites;
import org.eclipse.emf.cdo.dawn.ui.views.DawnWizardPageItemProvider;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.net4j.util.container.IContainer;
import org.eclipse.net4j.util.container.IManagedContainer;
import org.eclipse.net4j.util.container.IPluginContainer;
import org.eclipse.net4j.util.ui.views.ContainerItemProvider;
import org.eclipse.net4j.util.ui.views.IElementFilter;
import org.eclipse.jface.viewers.DecoratingLabelProvider;
import org.eclipse.jface.viewers.IBaseLabelProvider;
import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.PlatformUI;
/**
* @author Martin Fluegge
* @since 1.0
*/
public class CDOResourceNodeSelectionWidget extends Composite
{
private ContainerItemProvider<IContainer<Object>> itemProvider;
private ShowResourcesViewFilter viewFilter;
private TreeViewer viewer;
public CDOResourceNodeSelectionWidget(Composite parent, int style)
{
super(parent, style);
GridLayout layout = new GridLayout();
layout.numColumns = 1;
layout.marginWidth = 0;
setLayout(layout);
init();
}
public void setShowResources(boolean showResources)
{
viewFilter.setShowResources(showResources);
}
protected void init()
{
viewer = new TreeViewer(this, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
itemProvider = createContainerItemProvider();
viewer.setContentProvider(createContentProvider());
viewer.setLabelProvider(createLabelProvider());
viewer.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));
viewer.setInput(getManagedContainer());
viewFilter = new ShowResourcesViewFilter();
viewer.addFilter(viewFilter);
}
public void addSelectionChangedListener(ISelectionChangedListener listener)
{
viewer.addSelectionChangedListener(listener);
}
public void removeSelectionChangedListener(ISelectionChangedListener listener)
{
viewer.removeSelectionChangedListener(listener);
}
protected IManagedContainer getManagedContainer()
{
return IPluginContainer.INSTANCE;
}
protected IContentProvider createContentProvider()
{
return itemProvider;
}
protected IBaseLabelProvider createLabelProvider()
{
ILabelDecorator labelDecorator = createLabelDecorator();
return new DecoratingLabelProvider(itemProvider, labelDecorator);
}
protected ILabelDecorator createLabelDecorator()
{
return PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator();
}
protected ContainerItemProvider<IContainer<Object>> createContainerItemProvider()
{
return new DawnWizardPageItemProvider<IContainer<Object>>(new IElementFilter()
{
public boolean filter(Object element)
{
return element instanceof CDOSession;
}
});
}
/**
* @author Martin Fluegge
*/
protected class ShowResourcesViewFilter extends ViewerFilter
{
private boolean showResources;
@Override
public boolean select(Viewer viewer, Object parentElement, Object element)
{
if (element instanceof CDOResource)
{
return isShowResources();
}
return true;
}
public void setShowResources(boolean showResources)
{
this.showResources = showResources;
}
public boolean isShowResources()
{
return showResources;
}
}
}