/*

  * Copyright 2004-2008 the Seasar Foundation and the Others.

  *

  * 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 org.seasar.eclipse.common.util;

 import org.eclipse.core.resources.IProject;

 import org.eclipse.core.resources.IResource;

 import org.eclipse.core.runtime.IAdaptable;

 import org.eclipse.ui.texteditor.ITextEditor;

 /**

  * @author taichi

  * 

  */

 public class AdaptableUtil {

     public static ITextEditor toTextEditor(Object adaptable) {

         ITextEditor result = null;

         if (adaptable instanceof ITextEditor) {

             result = (ITextEditor) adaptable;

         } else if (adaptable instanceof IAdaptable) {

             IAdaptable a = (IAdaptable) adaptable;

             result = (ITextEditor) a.getAdapter(ITextEditor.class);

         }

         return result;

     }

     public static IResource toResource(Object adaptable) {

         IResource result = null;

         if (adaptable instanceof IResource) {

             result = (IResource) adaptable;

         } else if (adaptable instanceof IAdaptable) {

             IAdaptable a = (IAdaptable) adaptable;

             result = (IResource) a.getAdapter(IResource.class);

         }

         return result;

     }

     public static IProject toProject(Object adaptable) {

         IProject result = null;

         if (adaptable instanceof IProject) {

             result = (IProject) adaptable;

         } else if (adaptable instanceof IAdaptable) {

             IAdaptable a = (IAdaptable) adaptable;

             result = (IProject) a.getAdapter(IProject.class);

         }

         if (result == null) {

             IResource r = toResource(adaptable);

             if (r != null) {

                 result = r.getProject();

             }

         }

         return result;

     }

 }