/*

  * 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;

 import java.util.ArrayList;

 import java.util.List;

 import org.seasar.uruma.annotation.EventListenerType;

 import org.seasar.uruma.binding.method.impl.GenericActionListenerBinder;

 import org.seasar.uruma.binding.method.impl.GenericHandlerListenerBinder;

 import org.seasar.uruma.binding.method.impl.StructuredViewerListenerBinder;

 import org.seasar.uruma.binding.method.impl.UrumaApplicationWindowListenerBinder;

 import org.seasar.uruma.binding.method.impl.ViewerListenerBinder;

 import org.seasar.uruma.binding.method.impl.WidgetListenerBinder;

 import org.seasar.uruma.context.WidgetHandle;

 /**

  * {@link ListenerBinder} のためのファクトリクラスです。<br />

  * 

  * @author y-komori

  */

 public class ListenerBinderFactory {

     private static ListenerBinder[] binders;

     static {

         List<ListenerBinder> binderList = new ArrayList<ListenerBinder>();

         binderList.add(new StructuredViewerListenerBinder());

         binderList.add(new ViewerListenerBinder());

         binderList.add(new UrumaApplicationWindowListenerBinder());

         binderList.add(new WidgetListenerBinder());

         binderList.add(new GenericActionListenerBinder());

         binderList.add(new GenericHandlerListenerBinder());

         binders = binderList.toArray(new ListenerBinder[binderList.size()]);

     }

     private ListenerBinderFactory() {

     }

     /**

      * {@link WidgetHandle} に対応する {@link ListenerBinder} を取得します。<br />

      * 

      * @param handle

      *            {@link WidgetHandle} オブジェクト

      * @return {@link ListenerBinder} オブジェクト

      */

     public static ListenerBinder getListenerBinder(final WidgetHandle handle,

             final EventListenerType type) {

         for (int i = 0; i < binders.length; i++) {

             Class<?> clazz = binders[i].getTargetCLass();

             if (clazz.isAssignableFrom(handle.getWidgetClass())) {

                 EventListenerType[] types = binders[i].getEventTypes();

                 if (types == null) {

                     return binders[i];

                 } else {

                     for (int j = 0; j < types.length; j++) {

                         if (types[j] == type) {

                             return binders[i];

                         }

                     }

                 }

             }

         }

         return null;

     }

 }