/*
* Copyright (c) 2010-2012 Research In Motion Limited. All rights reserved.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License, Version 1.0,
* which accompanies this distribution and is available at
*
* http://www.eclipse.org/legal/epl-v10.html
*
*/
package net.rim.ejde.internal.ui.viewers.project;

import java.util.Collection;

import org.eclipse.core.resources.IProject;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

/**
 * Content provider that will return set of active-able BB projects given workspace input
 *
 * @author bchabot
 */
public class BBProjectContentProvider implements ITreeContentProvider {

    /**
     * Constructor
     */
    public BBProjectContentProvider() {
    }

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
     */
    public boolean hasChildren( Object parent ) {
        return false;
    }

    /**
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
     */
    public Object[] getChildren( Object parent ) {
        return new Object[ 0 ];
    }

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

    /**
     * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
     */
    public Object[] getElements( Object input ) {
        if( input instanceof Collection< ? > ) {
            Collection< ? > projects = (Collection< ? >) input;
            return projects.toArray( new IProject[ 0 ] );
        }
        return new Object[ 0 ];
    }

    /**
     * @see org.eclipse.jface.viewers.IContentProvider#dispose()
     */
    public void dispose() {
        // do nothing
    }

    /**
     * @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 ) {
        // do nothing
    }

}