src/plugins/android.codeutils/src/com/motorola/studio/android/wizards/buildingblocks/ElementTreeViewFilter.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.motorola.studio.android.wizards.buildingblocks;

import org.eclipse.jdt.core.IJavaModel;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.ui.wizards.TypedViewerFilter;
import org.eclipse.jface.viewers.Viewer;

import com.motorola.studio.android.common.log.StudioLogger;

/**
 * Class that implements a View Filter for the package selection
 * on the New Project Wizard
 */
@SuppressWarnings("restriction")
class ElementTreeViewFilter extends TypedViewerFilter
{
    private static Class<?>[] acceptedClasses = new Class[]
    {
            IJavaModel.class, IPackageFragmentRoot.class, IJavaProject.class
    };

    /**
     * Default constructor
     */
    public ElementTreeViewFilter()
    {
        super(acceptedClasses);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jdt.internal.ui.wizards.TypedViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    @Override
    public boolean select(Viewer viewer, Object parent, Object element)
    {
        boolean select = false;
        if (element instanceof IPackageFragmentRoot)
        {
            try
            {
                select =
                        (((IPackageFragmentRoot) element).getKind() == IPackageFragmentRoot.K_SOURCE);
            }
            catch (JavaModelException e)
            {
                StudioLogger.error(ElementTreeViewFilter.class, e.getLocalizedMessage(), e);
            }
        }
        else
        {
            select = super.select(viewer, parent, element);
        }
        return select;
    }
}