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   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
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   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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   *  specific language governing permissions and limitations
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   ****************************************************************/
  
  
  package org.apache.cayenne.modeler.editor;
  
  import javax.swing.JScrollPane;
  import javax.swing.JTabbedPane;
  import javax.swing.event.ChangeEvent;
  import javax.swing.event.ChangeListener;
  
  import org.apache.cayenne.modeler.ProjectController;
  import org.apache.cayenne.modeler.event.QueryDisplayEvent;
  import org.apache.cayenne.modeler.event.QueryDisplayListener;
  import org.apache.cayenne.map.QueryDescriptor;
  
  /**
   */
  public class SQLTemplateTabbedView extends JTabbedPane {
  
      protected ProjectController mediator;
      protected SQLTemplateMainTab mainTab;
      protected SQLTemplateScriptsTab scriptsTab;
      protected SQLTemplatePrefetchTab prefetchTab;
      protected int lastSelectionIndex;
  
      public SQLTemplateTabbedView(ProjectController mediator) {
          this.mediator = mediator;
  
          initView();
          initController();
      }
  
      private void initView() {
          setTabPlacement(JTabbedPane.TOP);
  
          this.mainTab = new SQLTemplateMainTab(mediator);
          addTab("General", new JScrollPane(mainTab));
  
          this.scriptsTab = new SQLTemplateScriptsTab(mediator);
          addTab("SQL Scripts", scriptsTab);
  
          this.prefetchTab = new SQLTemplatePrefetchTab(mediator);
          addTab("Prefetches", prefetchTab);
      }
  
      private void initController() {
          mediator.addQueryDisplayListener(new QueryDisplayListener() {
  
              public void currentQueryChanged(QueryDisplayEvent e) {
                  initFromModel();
              }
          });
  
          this.addChangeListener(new ChangeListener() {
  
              public void stateChanged(ChangeEvent e) {
                  lastSelectionIndex = getSelectedIndex();
                  updateTabs();
              }
          });
      }
  
      void initFromModel() {
          if (!QueryDescriptor.SQL_TEMPLATE.equals(mediator.getCurrentQuery().getType())) {
              setVisible(false);
              return;
          }
  
          // if no root, reset tabs to show the first panel..
          if (mediator.getCurrentQuery().getRoot() == null) {
              lastSelectionIndex = 0;
          }
  
          // tab did not change - force update
          if (getSelectedIndex() == lastSelectionIndex) {
              updateTabs();
          }
          // change tab, this will update newly displayed tab...
          else {
              setSelectedIndex(lastSelectionIndex);
          }
  
          setVisible(true);
      }
  
      void updateTabs() {
          switch (lastSelectionIndex) {
              case 0:
                  mainTab.initFromModel();
                  break;
              case 1:
                  scriptsTab.initFromModel();
                  break;
              case 2:
                  prefetchTab.initFromModel();
                  break;
          }
      }
  
      public SQLTemplateScriptsTab getScriptsTab() {
          return scriptsTab;
      }
  }
  