/*

  * 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.value;

 import java.util.HashMap;

 import java.util.Map;

 import org.eclipse.swt.widgets.Button;

 import org.eclipse.swt.widgets.Label;

 import org.eclipse.swt.widgets.Spinner;

 import org.eclipse.swt.widgets.Text;

 import org.seasar.uruma.binding.value.binder.BrowserValueBinder;

 import org.seasar.uruma.binding.value.binder.ComboViewerValueBinder;

 import org.seasar.uruma.binding.value.binder.DateTimeValueBinder;

 import org.seasar.uruma.binding.value.binder.GenericValueBinder;

 import org.seasar.uruma.binding.value.binder.StatusLineManagerValueBinder;

 import org.seasar.uruma.binding.value.binder.TableValueBinder;

 import org.seasar.uruma.binding.value.binder.TableViewerValueBinder;

 import org.seasar.uruma.binding.value.binder.TreeViewerValueBinder;

 import org.seasar.uruma.core.UrumaMessageCodes;

 import org.seasar.uruma.log.UrumaLogger;

 import org.seasar.uruma.util.AssertionUtil;

 /**

  * {@link ValueBinder} を取得するためのファクトリクラスです。<br />

  * 

  * @author y-komori

  */

 public class ValueBinderFactory implements UrumaMessageCodes {

     private static final UrumaLogger logger = UrumaLogger

             .getLogger(ValueBinderFactory.class);

     private static final Map<Class<?>, ValueBinder> binderMap = new HashMap<Class<?>, ValueBinder>();

     static {

         addValueBinder(new GenericValueBinder<Label>(Label.class, "text"));

         addValueBinder(new GenericValueBinder<Text>(Text.class, "text"));

         addValueBinder(new GenericValueBinder<Spinner>(Spinner.class,

                 "selection"));

         addValueBinder(new GenericValueBinder<Button>(Button.class, "selection"));

         addValueBinder(new ComboViewerValueBinder());

         addValueBinder(new TableViewerValueBinder());

         addValueBinder(new TableValueBinder());

         addValueBinder(new TreeViewerValueBinder());

         addValueBinder(new StatusLineManagerValueBinder());

         addValueBinder(new BrowserValueBinder());

         addValueBinder(new DateTimeValueBinder());

     }

     /**

      * <code>widgetClass</code> に対応する {@link ValueBinder} を取得します。<br />

      * 

      * @param widgetClass

      *            対応する {@link ValueBinder} を取得するための {@link Class} オブジェクト

      * @return <code>widgetClass</code> に対応する {@link ValueBinder}。見つからなかった場合は

      *         <code>null</code>

      */

     public static ValueBinder getValueBinder(final Class<?> widgetClass) {

         ValueBinder binder = binderMap.get(widgetClass);

         if (binder == null) {

             logger.log(VALUE_BINDER_NOT_FOUND, widgetClass.getName());

         }

         return binder;

     }

     /**

      * {@link ValueBinder} を登録します。<br />

      * 

      * @param valueBinder

      *            {@link ValueBinder} オブジェクト

      */

     public static void addValueBinder(final ValueBinder valueBinder) {

         AssertionUtil.assertNotNull("valueBinder", valueBinder);

         Class<?> widgetClass = valueBinder.getWidgetType();

         AssertionUtil.assertNotNull("widgetClass", widgetClass);

         binderMap.put(widgetClass, valueBinder);

     }

 }