/**
    * Copyright 2005-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.uif.container;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.commons.collections.CollectionUtils;
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.datadictionary.parse.BeanTags;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.component.ClientSideState;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.util.LifecycleElement;
  import org.kuali.rice.krad.uif.widget.Tabs;
  
  /**
   * A group that presents its child Groups as tabs.  Items in this group's item list must be Groups
   * themselves.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   * @see Group
   */
  @BeanTags({@BeanTag(name = "tabGroup", parent = "Uif-TabGroup"),
          @BeanTag(name = "tabSection", parent = "Uif-TabSection"),
          @BeanTag(name = "tabSubSection", parent = "Uif-TabSubSection")})
  public class TabGroup extends GroupBase {
      private static final long serialVersionUID = 3L;
  
      private Tabs tabsWidget;
  
      // Required by ClientSideState annotation though not used by class
      @ClientSideState(variableName = "activeTab")
      private String defaultActiveTabId;
  
      public TabGroup() {
          super();
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void performFinalize(Object model, LifecycleElement parent) {
          super.performFinalize(model, parent);
          this.addDataAttribute(UifConstants.DataAttributes.TYPE, "Uif-TabGroup");
  
          if (StringUtils.isBlank(defaultActiveTabId) && CollectionUtils.isNotEmpty(this.getItems())) {
              defaultActiveTabId = this.getItems().get(0).getId();
          }
      }
  
      /**
       * Only groups are supported for this group.
       *
       * {@inheritDoc}
       */
      @Override
      public Set<Class<? extends Component>> getSupportedComponents() {
          Set<Class<? extends Component>> supportedComponents = new HashSet<Class<? extends Component>>();
          supportedComponents.add(Group.class);
  
          return supportedComponents;
      }
  
      /**
       * Gets the widget which contains any configuration for the tab widget component used to render
       * this TabGroup
       *
       * @return the tabsWidget
       */
      @BeanTagAttribute
      public Tabs getTabsWidget() {
          return this.tabsWidget;
      }
  
      /**
       * @param tabsWidget the tabsWidget to set
       */
      public void setTabsWidget(Tabs tabsWidget) {
          this.tabsWidget = tabsWidget;
      }
  
      /**
      * Id of the active tab of the tab group when rendered.
      *
      * @return the default active tab of this tab group
      */
     @BeanTagAttribute
     public String getDefaultActiveTabId() {
         return defaultActiveTabId;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.container.TabGroup#getDefaultActiveTabId()
      */
     public void setDefaultActiveTabId(String defaultActiveTabId) {
         this.defaultActiveTabId = defaultActiveTabId;
     }
 }