/*******************************************************************************
* Copyright (c) 2014, 2015 Red Hat Inc.
* 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:
* Mickael Istria (Red Hat Inc.) - initial API and implementation
******************************************************************************/
package org.eclipse.ui.internal.navigator.resources.nested;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.TreeNode;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.navigator.CommonViewer;
/**
* Hides project if it is shown nested in some other location
* @author mistria
*
*/
public class HideTopLevelProjectIfNested extends ViewerFilter {
public static final String EXTENSION_ID = "org.eclipse.ui.navigator.resources.nested.HideTopLevelProjectIfNested"; //$NON-NLS-1$
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
CommonViewer commonViewer = (CommonViewer)viewer;
if (commonViewer.getNavigatorContentService().getActivationService().isNavigatorExtensionActive(NestedProjectsContentProvider.EXTENSION_ID)) {
if (element instanceof IProject) {
if (parentElement != null) {
Object parentObject = null;
if (parentElement instanceof TreeNode) {
parentObject = ((TreeNode)parentElement).getValue();
} else if (parentElement instanceof TreePath) {
parentObject = ((TreePath)parentElement).getLastSegment();
} else {
parentObject = parentElement;
}
if (parentObject instanceof IAdaptable) {
IAdaptable parentAdaptable = (IAdaptable)parentObject;
if (parentAdaptable.getAdapter(IWorkspaceRoot.class) != null ||
parentAdaptable.getAdapter(IWorkingSet.class) != null) {
return !NestedProjectManager.getInstance().isShownAsNested((IProject) element);
}
}
}
}
}
return true;
}
}