/*

  * 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.rcp.configuration.extension;

 import org.seasar.framework.util.StringUtil;

 import org.seasar.uruma.component.rcp.PerspectiveComponent;

 import org.seasar.uruma.component.rcp.WorkbenchComponent;

 import org.seasar.uruma.rcp.configuration.Extension;

 import org.seasar.uruma.rcp.configuration.ExtensionBuilder;

 import org.seasar.uruma.rcp.configuration.ExtensionFactory;

 import org.seasar.uruma.rcp.configuration.ExtensionPoints;

 import org.seasar.uruma.rcp.configuration.elements.PerspectiveElement;

 import org.seasar.uruma.rcp.ui.AutoPerspectiveFactory;

 import org.seasar.uruma.rcp.ui.BlankPerspectiveFactory;

 import org.seasar.uruma.rcp.ui.GenericPerspectiveFactory;

 /**

  * <code>perspectives</code> 拡張ポイントのための {@link ExtensionBuilder} です。<br />

  * 

  * @author y-komori

  */

 public class PerspectivesBuilder extends AbstractExtensionBuilder {

     /*

      * @see org.seasar.uruma.rcp.configuration.ExtensionBuilder#buildExtension()

      */

     public Extension[] buildExtension() {

         Extension extension = ExtensionFactory

                 .createExtension(ExtensionPoints.PERSPECTIVES);

         WorkbenchComponent workbenchComponent = service.getWorkbenchComponent();

         if (DUMMY_WORKBENCH_PATH.equals(workbenchComponent.getPath())) {

             return new Extension[] { createBlankPerspective() };

         }

         boolean defaultIdUsed = false;

         for (PerspectiveComponent perspective : workbenchComponent

                 .getPerspectives()) {

             // ID のついていない最初のパースペクティブにはデフォルトIDをつける

             if (StringUtil.isBlank(perspective.id) && !defaultIdUsed) {

                 perspective.id = DEFAULT_PERSPECTIVE_ID;

                 defaultIdUsed = true;

             }

             PerspectiveElement element = new PerspectiveElement(perspective);

             element.clazz = GenericPerspectiveFactory.class.getName();

             extension.addElement(element);

         }

         if (extension.getElements().size() == 0) {

             // perspective 要素が定義されていないときにデフォルト設定を行う

             PerspectiveComponent component = new PerspectiveComponent();

             component.clazz = AutoPerspectiveFactory.class.getName();

             component.id = DEFAULT_PERSPECTIVE_ID;

             component.name = service.getPluginId();

             workbenchComponent.addChild(component);

             workbenchComponent.initialPerspectiveId = DEFAULT_PERSPECTIVE_ID;

             PerspectiveElement element = new PerspectiveElement(component);

             extension.addElement(element);

         } else if (StringUtil.isBlank(workbenchComponent.initialPerspectiveId)) {

             // initialPerspectiveId が定義されていない場合は

             // 最初に記述されている perspective を表示する

             PerspectiveComponent perspective = workbenchComponent

                     .getPerspectives().get(0);

             workbenchComponent.initialPerspectiveId = perspective.id;

         }

         return new Extension[] { extension };

     }

     protected Extension createBlankPerspective() {

         Extension extension = ExtensionFactory

                 .createExtension(ExtensionPoints.PERSPECTIVES);

         PerspectiveElement blank = new PerspectiveElement();

         blank.clazz = BlankPerspectiveFactory.class.getName();

         blank.id = service.createRcpId(DEFAULT_PERSPECTIVE_ID);

         blank.name = "";

         extension.addElement(blank);

         return extension;

     }

 }