org.eclipse.virgo.ide.runtime.internal.ui.providers.GenericTreeProvider.java Source code

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Here is the source code for org.eclipse.virgo.ide.runtime.internal.ui.providers.GenericTreeProvider.java

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/*******************************************************************************
 * Copyright (c) 2009, 2012 SpringSource, a divison of VMware, 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:
 *     SpringSource, a division of VMware, Inc. - initial API and implementation
 *******************************************************************************/

package org.eclipse.virgo.ide.runtime.internal.ui.providers;

import java.util.Collection;

import org.apache.commons.lang.ArrayUtils;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

/**
 *
 * @author Miles Parker
 *
 */
public abstract class GenericTreeProvider implements ITreeContentProvider {

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getElements(java.lang.Object)
     */
    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof Collection) {
            Collection<?> collection = (Collection<?>) inputElement;
            Object[] elements = new Object[] {};
            for (Object object : collection) {
                elements = ArrayUtils.addAll(elements, getElements(object));
            }
            return elements;
        }
        return new Object[0];
    }

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
     */
    public Object getParent(Object element) {
        return null;
    }

    /**
     * @see org.eclipse.jface.viewers.IContentProvider#dispose()
     */
    public void dispose() {
    }

    /**
     * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object,
     *      java.lang.Object)
     */
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    }

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
     */
    public Object[] getChildren(Object parentElement) {
        return getElements(parentElement);
    }

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
     */
    public boolean hasChildren(Object element) {
        return getChildren(element).length > 0;
    }

}