package com.timjohnstondev.timer;

 import java.awt.Dimension;

 import java.awt.Window;

 import java.awt.event.ActionEvent;

 import java.awt.event.ActionListener;

 import javax.swing.BorderFactory;

 import javax.swing.Box;

 import javax.swing.BoxLayout;

 import javax.swing.JButton;

 import javax.swing.JLabel;

 import javax.swing.JPanel;

 import javax.swing.JSlider;

 import javax.swing.event.ChangeEvent;

 import javax.swing.event.ChangeListener;

 import com.sun.awt.AWTUtilities;

 public class TopPanel extends JPanel implements ActionListener

 {

   private CountDownPanel timerPanel;

   private CountDownTimer timer;

   private JSlider slider;

   private JLabel sliderValue;

   private JButton startButton;

   private JButton reset30Button;

   private final int sliderDefault = 70;

   private final String startAction = "Start";

   private final String stopAction = "Pause";

   private final String reset30 = "30";

   private final String percent = "%";

   TopPanel(final CountDownPanel newTimerPanel)

   {

     timerPanel = newTimerPanel;

     timer = timerPanel.getTimer();

     configureSlider();

     configureSliderValue();

     configureStartButton();

     configureReset30Button();

     setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));

     setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 0));

     add(startButton);

     add(reset30Button);

     add(Box.createHorizontalGlue());

     add(slider);

     add(Box.createRigidArea(new Dimension(5, 0)));

     add(sliderValue);

   }

   final void setSliderValue(final int newValue)

   {

     slider.setValue(newValue);

   }

   final int getSliderValue()

   {

     return slider.getValue();

   }

   private void configureReset30Button()

   {

     reset30Button = new JButton(reset30);

     reset30Button.setActionCommand(reset30);

     reset30Button.addActionListener(this);

     reset30Button.setMinimumSize(new Dimension(50, 30));

     reset30Button.setPreferredSize(new Dimension(50, 30));

   }

   private void configureStartButton()

   {

     startButton = new JButton(startAction);

     startButton.setActionCommand(startAction);

     startButton.addActionListener(this);

     startButton.setMinimumSize(new Dimension(90, 30));

     startButton.setPreferredSize(new Dimension(90, 30));

   }

   private void configureSlider()

   {

     slider = new JSlider(10, 100, 70);

     slider.setMaximumSize(new Dimension(150, 30));

     slider.setValue(sliderDefault);

     slider.addChangeListener(new SliderAction());

   }

   private void configureSliderValue()

   {

     sliderValue = new JLabel(sliderDefault + percent);

     sliderValue.setMinimumSize(new Dimension(40, 30));

     sliderValue.setPreferredSize(new Dimension(40, 30));

   }

   public final void actionPerformed(final ActionEvent ae)

   {

     final TimerApplication timerApp = (TimerApplication) getParent().getParent().getParent().getParent();

     if (startAction.equals(ae.getActionCommand()))

     {

       timerPanel.setEnabled(false);

       timerPanel.setRemainingTime();

       timer.start();

       startButton.setActionCommand(stopAction);

       startButton.setText(stopAction);

       timerApp.startDispayTimer();

     }

     else if (stopAction.equals(ae.getActionCommand()))

     {

       timerPanel.setEnabled(true);

       timer.stop();

       startButton.setActionCommand(startAction);

       startButton.setText(startAction);

       timerApp.stopDispayTimer();

     }

     else if (reset30.equals(ae.getActionCommand()))

     {

       timer.stop();

       timer.initialize(CountDownTimer.COUNTER_DEFAULT);

       timerPanel.setEnabled(false);

       timer.start();

       startButton.setActionCommand(stopAction);

       startButton.setText(stopAction);

       timerApp.startDispayTimer();

     }

   }

   class SliderAction implements ChangeListener

   {

     public void stateChanged(final ChangeEvent ce)

     {

       final int value = slider.getValue();

       sliderValue.setText(Integer.toString(value) + percent);

       AWTUtilities.setWindowOpacity((Window) getTopLevelAncestor(), value / 100f);

     }

   }

 }