package ch.werner_randelshofer.gui;

/*
Copyright (C) 1999 Werner Randelshofer
werner.randelshofer@mythen.ch
http://www.mythen.ch/w.randelshofer/
    
Permission to use this release of MovieControlAWT is hereby
granted without fee provided that the complete copyright
notice and this permission notice appear in all copies
and in supporting documentation.
*/
import java.awt.Panel;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import ch.werner_randelshofer.gui.model.Player;
import ch.werner_randelshofer.gui.model.BoundedRangeModel;
import ch.werner_randelshofer.gui.event.ChangeListener;
import ch.werner_randelshofer.gui.event.ChangeEvent;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

/**
The MovieControlPanel contains a start/stop button,
a slider, a forward and a rewind button.

@author	Werner Randelshofer, Staldenmattweg 2, CH-6405 Immensee, Switzerland.
@version	1999-02-28	Created.
*/
public class MovieControlAWT
extends Panel
implements ActionListener, ItemListener, ChangeListener
	{
	private Player player_;
	private MovieSlider slider_;
	private TriggerButtonAWT forwardButton_, rewindButton_;
	private ToggleButton startButton_;
	private BoundedRangeModel boundedRangeModel_;
	
	public MovieControlAWT()
		{
		super(new GridBagLayout());
		
		GridBagConstraints c;
		
		startButton_ = new ToggleButton();
		startButton_.setUnselectedIcon(new ImageIcon(getClass().getResource("icon/Play.gif")));
		startButton_.setSelectedIcon(new ImageIcon(getClass().getResource("icon/Pause.gif")));
		startButton_.addItemListener(this);
		
		c = new GridBagConstraints();
		//c.gridx = 0;
		//c.gridy = 0;
		add(startButton_,c);
		
		slider_ = new MovieSlider();
		
		c = new GridBagConstraints();
		c.gridx = 1;
		//c.gridy = 0;
		c.fill = GridBagConstraints.HORIZONTAL;
		c.weightx = 1.0;
		add(slider_,c);
		
		rewindButton_ = new TriggerButtonAWT();
		rewindButton_.setIcon(new ImageIcon(getClass().getResource("icon/Rewind.gif")));
		c = new GridBagConstraints();
		c.gridx = 2;
		//c.gridy = 0;
		add(rewindButton_,c);
		rewindButton_.addActionListener(this);

		forwardButton_ = new TriggerButtonAWT();
		forwardButton_.setIcon(new ImageIcon(getClass().getResource("icon/Forward.gif")));
		c = new GridBagConstraints();
		c.gridx = 3;
		//c.gridy = 0;
		add(forwardButton_,c);
		forwardButton_.addActionListener(this);
		}
	
	public synchronized void setPlayer(Player player)
		{
		if (player_ != null)
			{
			player_.removeChangeListener(this);
			}
		player_ = player;
		boundedRangeModel_ = player_ == null ? null : player_.getBoundedRangeModel();
		slider_.setModel(boundedRangeModel_);
		if (player_ != null)
			{
			startButton_.setSelected(player_.isActive());
			player_.addChangeListener(this);
			}
		}

	public void setProgressModel(BoundedRangeModel brm)
		{
		slider_.setProgressModel(brm);
		}
	
	public void actionPerformed(ActionEvent event)
		{
		Object source = event.getSource();
		int value = boundedRangeModel_.getValue();
		if (source == forwardButton_)
			{
			boundedRangeModel_.setValue( value == boundedRangeModel_.getMaximum() ? boundedRangeModel_.getMinimum() : value + 1);
			}
		else if (source == rewindButton_)
			{
			boundedRangeModel_.setValue( value == boundedRangeModel_.getMinimum() ? boundedRangeModel_.getMaximum() : value - 1);
			}
		}
	
	public void itemStateChanged(ItemEvent event)
		{
		if (player_ == null)
			{ return; }
			
		if (startButton_.isSelected() != player_.isActive())
			{
			if (startButton_.isSelected())
				{ player_.start(); }
			else
				{ player_.stop(); }
			}
		}
	
	public void stateChanged(ChangeEvent event)
		{
		startButton_.setSelected(player_.isActive());
		}
	}