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/*******************************************************************************
* Copyright (c) 2013 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.ui.navigator.filter;
import java.util.concurrent.atomic.AtomicReference;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.te.tcf.core.interfaces.IPeerType;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerNode;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerNodeProperties;
import org.eclipse.tcf.te.tcf.ui.navigator.nodes.PeerRedirectorGroupNode;
import org.eclipse.tcf.te.ui.views.interfaces.ICategory;
import org.eclipse.tcf.te.ui.views.interfaces.IUIConstants;
/**
* Filter implementation filtering generic from the root level.
*/
public class GenericFilter extends ViewerFilter {
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public boolean select(Viewer viewer, Object parentElement, final Object element) {
boolean visible = true;
if (element instanceof IPeerNode) {
final AtomicReference<String> type = new AtomicReference<String>();
Runnable runnable = new Runnable() {
@Override
public void run() {
type.set(((IPeerNode)element).getPeer().getAttributes().get(IPeerNodeProperties.PROP_TYPE));
}
};
if (Protocol.isDispatchThread()) runnable.run();
else Protocol.invokeAndWait(runnable);
boolean belongsTo = type.get() == null || IPeerType.TYPE_GENERIC.equals(type.get());
if (parentElement instanceof TreePath) {
// If the direct parent is not a PeerRedirectorGroupNode, look at the very first
// element in the tree path as parent, which is likely the category.
Object candidate = ((TreePath)parentElement).getSegment(((TreePath)parentElement).getSegmentCount() - 1);
if (candidate instanceof PeerRedirectorGroupNode) parentElement = candidate;
else parentElement = ((TreePath)parentElement).getFirstSegment();
}
if (parentElement instanceof ICategory) {
if (IUIConstants.ID_CAT_MY_TARGETS.equals(((ICategory)parentElement).getId()) || IUIConstants.ID_CAT_NEIGHBORHOOD.equals(((ICategory)parentElement).getId())) {
visible = belongsTo;
}
else if (!IUIConstants.ID_CAT_FAVORITES.equals(((ICategory)parentElement).getId())) {
visible = !belongsTo;
}
}
else if (!(parentElement instanceof PeerRedirectorGroupNode)) {
visible = belongsTo;
}
}
return visible;
}
}
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