/*******************************************************************************
* Copyright (c) 2004, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.dialogs;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.ui.wizards.IWizardDescriptor;
/**
* A viewer filter that will exclude all IWizardDescriptors that do not have at
* least one tag in a provided set.
*
* @since 3.1
*/
public class WizardTagFilter extends ViewerFilter {
private String [] myTags;
/**
* Create a new instance of this filter
* @param tags the wizard tags to allow
*/
public WizardTagFilter(String [] tags) {
myTags = tags;
}
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if (element instanceof IWizardDescriptor) {
IWizardDescriptor desc = (IWizardDescriptor)element;
for (String tag : desc.getTags()) {
for (String myTag : myTags) {
if (tag.equals(myTag)) {
return true;
}
}
}
return false;
}
Object[] children = ((ITreeContentProvider) ((AbstractTreeViewer) viewer)
.getContentProvider()).getChildren(element);
if (children.length > 0) {
return filter(viewer, element, children).length > 0;
}
return false;
}
}