/*

  * 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.action;

 import org.eclipse.core.resources.IProject;

 import org.eclipse.core.resources.IResource;

 import org.eclipse.core.runtime.CoreException;

 import org.eclipse.jface.action.IAction;

 import org.eclipse.jface.viewers.ISelection;

 import org.eclipse.jface.viewers.IStructuredSelection;

 import org.eclipse.ui.IActionDelegate;

 import org.seasar.eclipse.common.CommonPlugin;

 import org.seasar.eclipse.common.util.AdaptableUtil;

 import org.seasar.eclipse.common.util.ProjectUtil;

 /**

  * @author taichi

  * 

  */

 public abstract class AbstractProjectAction implements IActionDelegate {

     private IProject project = null;

     /**

      * 

      */

     public AbstractProjectAction() {

         super();

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction,

      *      org.eclipse.jface.viewers.ISelection)

      */

     public void selectionChanged(IAction action, ISelection selection) {

         if (selection instanceof IStructuredSelection) {

             IStructuredSelection ss = (IStructuredSelection) selection;

             Object o = ss.getFirstElement();

             this.project = AdaptableUtil.toProject(o);

             if (this.project == null) {

                 IResource r = AdaptableUtil.toResource(o);

                 if (r != null) {

                     this.project = r.getProject();

                 }

             }

         }

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)

      */

     public void run(IAction action) {

         try {

             if (this.project == null) {

                 this.project = ProjectUtil.getCurrentSelectedProject();

             }

             if (this.project != null) {

                 run(action, this.project);

             }

         } catch (CoreException e) {

             CommonPlugin.log(e);

         }

     }

     public abstract void run(IAction action, IProject project)

             throws CoreException;

 }