TreeContentProvider.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.project;

import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

import com.android.ide.eclipse.adt.internal.sdk.Sdk;
import com.android.sdklib.IAndroidTarget;
import com.motorola.studio.android.adt.SdkUtils;
import com.motorola.studio.android.model.AndroidProject;

/**
 * Class that implements a content provider for the Samples Tree viewers.
 */
@SuppressWarnings("restriction")
class TreeContentProvider implements ITreeContentProvider
{
    AndroidProject project = null;

    public TreeContentProvider(AndroidProject project)
    {
        this.project = project;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
     */
    public Object[] getChildren(Object arg0)
    {
        Object[] objects;

        if (arg0 instanceof IAndroidTarget)
        {
            objects = SdkUtils.getSamples((IAndroidTarget) arg0);
        }
        else
        {
            objects = new Object[0];
        }
        return objects;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
     */
    public Object getParent(Object arg0)
    {
        return null;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
     */
    public boolean hasChildren(Object arg0)
    {
        Object[] obj = getChildren(arg0);
        return obj == null ? false : obj.length > 0;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
     */
    public Object[] getElements(Object arg0)
    {
        Object[] objs = null;

        if (arg0 instanceof Sdk)
        {
            Sdk sdk = (Sdk) arg0;
            Object[] targets = SdkUtils.getTargets(sdk);
            if (targets.length > 0)
            {
                for (IAndroidTarget target : (IAndroidTarget[]) targets)
                {
                    if (target.equals(project.getSdkTarget()))
                    {
                        objs = SdkUtils.getSamples(target);
                    }
                }
            }
            else
            {
                objs = new Object[0];
            }
        }
        return objs;
    }

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

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    public void inputChanged(Viewer arg0, Object arg1, Object arg2)
    {
        //do nothing
    }
}