/**

  * Copyright 2009 Timothy Johnston 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 com.timjohnstondev.unitconverter.view;

 import java.awt.Color;

 import java.awt.Dimension;

 import java.awt.Insets;

 import java.util.ResourceBundle;

 import javax.swing.JTabbedPane;

 import javax.swing.UIManager;

 import javax.swing.event.ChangeEvent;

 import javax.swing.event.ChangeListener;

 import com.timjohnstondev.unitconverter.controller.ModelController;

 /**

  * This {@code JTabbedPane} provided a way to add the {@link ConfigurationPanel} and {@link AboutPanel} without adding

  * more to the window size. It holds all of the configuration options for the application.

  */

 public class TopPanel extends JTabbedPane implements Configuration

 {

   private CalculationPanel calculationPanel;

   private ConfigurationPanel configurationPanel;

   private AboutPanel aboutPanel;

   /**

    * Constructs a {@code TopPanel} with a {@link UnitConverter} to allow contained panels access to other panels for

    * updating.

    * 

    * @param appPanel the {@code UnitConverter} to access to other panels

    * @param controller the {@code Controller} to access to the model layer

    */

   public TopPanel(final UnitConverter appPanel, final ModelController controller)

   {

     setPreferredSize(new Dimension(500, 100));

     setMaximumSize(new Dimension(500, 100));

     calculationPanel = new CalculationPanel();

     configurationPanel = new ConfigurationPanel(appPanel, controller);

     aboutPanel = new AboutPanel();

     final ResourceBundle resources = ResourceBundle.getBundle("com.timjohnstondev.unitconverter.view.View");

     add(resources.getString("TopPanel.calculationsTabTitle"), calculationPanel);

     add(resources.getString("TopPanel.configurationTabTitle"), configurationPanel);

     add(resources.getString("TopPanel.aboutTabTitle"), aboutPanel);

     UIManager.put("TabbedPane.contentBorderInsets", new Insets(0, 0, 0, 0));

     updateUI();

     addChangeListener(new ChangeListener()

     {

       @Override

       public final void stateChanged(final ChangeEvent event)

       {

         setTabColors();

       }

     });

   }

   private void setTabColors()

   {

     final int selectedIndex = getSelectedIndex();

     final int tabCount = getTabCount();

     setForegroundAt(selectedIndex, aboutPanel.getForeground());

     for (int i = 0; i < tabCount; i++)

     {

       if (i != selectedIndex)

       {

         setForegroundAt(i, aboutPanel.getBackground().darker());

       }

     }

     UIManager.put("TabbedPane.selected", aboutPanel.getBackground());

     UIManager.put("TabbedPane.focus", aboutPanel.getBackground());

     updateUI();

   }

   /**

    * Returns the contained {@code CalculationPanel} to other panels for updating.

    * 

    * @return the contained {@code CalculationPanel}

    */

   final CalculationPanel getCalculationPanel()

   {

     return calculationPanel;

   }

   @Override

   public final void setBackgroundColor(final Color color)

   {

     setBackground(color);

     calculationPanel.setBackgroundColor(color);

     configurationPanel.setBackgroundColor(color);

     aboutPanel.setBackgroundColor(color);

     setTabColors();

   }

   @Override

   public final void setFontSize(final float fontSize)

   {

     setFont(getFont().deriveFont(fontSize));

     calculationPanel.setFontSize(fontSize);

     configurationPanel.setFontSize(fontSize);

     aboutPanel.setFontSize(fontSize);

   }

   @Override

   public final void setForegroundColor(final Color color)

   {

     setForeground(color);

     calculationPanel.setForegroundColor(color);

     configurationPanel.setForegroundColor(color);

     aboutPanel.setForegroundColor(color);

     setTabColors();

   }

 }