/*

  * 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.uruma.binding.method.impl;

 import org.eclipse.jface.viewers.StructuredViewer;

 import org.seasar.uruma.annotation.EventListenerType;

 import org.seasar.uruma.binding.method.EventListenerDef;

 import org.seasar.uruma.binding.method.GenericDoubleClickListener;

 import org.seasar.uruma.binding.method.GenericSelectionChangedListener;

 import org.seasar.uruma.binding.method.ListenerBinder;

 import org.seasar.uruma.binding.method.MethodBinding;

 import org.seasar.uruma.context.PartContext;

 import org.seasar.uruma.context.WidgetHandle;

 /**

  * {@link StructuredViewer} のための {@link ListenerBinder} です。<br />

  * 

  * @author y-komori

  */

 public class StructuredViewerListenerBinder implements ListenerBinder {

     private static final EventListenerType[] SUPPORT_TYPES = new EventListenerType[] {

             EventListenerType.SELECTION, EventListenerType.MOUSE_DOUBLE_CLICK };

     /*

      * @see org.seasar.uruma.binding.method.ListenerBinder#bindListener(org.seasar.uruma.context.WidgetHandle,

      *      org.seasar.uruma.context.PartContext,

      *      org.seasar.uruma.binding.method.MethodBinding,

      *      org.seasar.uruma.binding.method.EventListenerDef)

      */

     public Class<?> bindListener(final WidgetHandle handle,

             final PartContext context, final MethodBinding binding,

             final EventListenerDef def) {

         StructuredViewer viewer = handle.<StructuredViewer> getCastWidget();

         if (def.getType() == EventListenerType.SELECTION) {

             GenericSelectionChangedListener listener = new GenericSelectionChangedListener(

                     context, binding);

             viewer.addSelectionChangedListener(listener);

             return GenericSelectionChangedListener.class;

         } else if (def.getType() == EventListenerType.MOUSE_DOUBLE_CLICK) {

             GenericDoubleClickListener listener = new GenericDoubleClickListener(

                     context, binding);

             viewer.addDoubleClickListener(listener);

             return GenericDoubleClickListener.class;

         }

         return null;

     }

     /*

      * @see org.seasar.uruma.binding.method.ListenerBinder#getEventTypes()

      */

     public EventListenerType[] getEventTypes() {

         return SUPPORT_TYPES;

     }

     /*

      * @see org.seasar.uruma.binding.method.ListenerBinder#getTargetCLass()

      */

     public Class<?> getTargetCLass() {

         return StructuredViewer.class;

     }

 }