import java.awt.BorderLayout;
  import java.awt.Color;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.FlowLayout;
  import java.awt.Font;
  import java.awt.Frame;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.FocusEvent;
  import java.awt.event.FocusListener;
  
  import javax.swing.Box;
  import javax.swing.BoxLayout;
  import javax.swing.JButton;
  import javax.swing.JComboBox;
  import javax.swing.JDialog;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JSlider;
  import javax.swing.JTextField;
  
  public class PatternEditorJDialog extends JDialog implements ActionListener, FocusListener {
  	private static final long serialVersionUID = 1L;
  	private static final Font titleFont = new Font(new JLabel().getFont().getName(), Font.BOLD, 14);
  	private static final String[] fieldsNames = new String[] {
  			"Low time : ", //0
  			"Rise time : ", //1
  			"High time : ", //2
  			"Fall time : ", //3
  			"Low time : ", //4
  			"Repeat : ", //5
  			"Begin time : ", //6
  			"Volume : ", //7
  			"Path : ", //8
  			"Duration : ", //9
  			"Pattern time : ", //10
  			"Total time : " //11
  	};
  	private void generateComponents() {
  		fields = new Component[fieldsNames.length];
  		
  		// 7 textfields
  		for(int i=0; i<7; i++) {
  			fields[i] = new JTextField(10);
  			fields[i].addFocusListener(this);
  		}
  		
  		// 1 slider
  		fields[7] = new JSlider(0, 10, 8);
  		((JSlider) fields[7]).setMajorTickSpacing(2);
  		((JSlider) fields[7]).setMinorTickSpacing(1);
  		((JSlider) fields[7]).setPaintTicks(true);
  		
  		// 1 combobox
  		fields[8] = new JComboBox<String>(MusicPath.pathNames);
  		
  		
  		// 1 textfields
  		fields[9] = new JTextField(10);
  		fields[9].addFocusListener(this);
  		
  		// 2 textfields disabled
  		for(int i=10; i<12; i++) {
  			fields[i] = new JTextField(10);
  			fields[i].setEnabled(false);
  			fields[i].addFocusListener(this);
  			fields[i].setForeground(Color.DARK_GRAY);
  		}
  	}
  	
  	private Component[] fields;
  	private JButton ok;
  	private JButton cancel;
  	private Music music = null;
  	
  	public PatternEditorJDialog(Frame parent) { this(parent, null); }
  	public PatternEditorJDialog(Frame parent, Music musicPrev) {
  		super(parent, "Pattern editor", true);
  		generateComponents();
  		
  		// main panel
  		
  		JPanel mainPanel = new JPanel(new BorderLayout());
  		getContentPane().add(mainPanel);
  		
  		// title
  		
  		JPanel titlePanel = new JPanel(new FlowLayout());
  		JLabel title = new JLabel("Pattern parameters : ");
  		title.setFont(titleFont);
  		titlePanel.add(title);
  		mainPanel.add(titlePanel, BorderLayout.NORTH);
  		
  		// center panel
  		JPanel centerPanel = new JPanel();
  		centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.LINE_AXIS));
  		mainPanel.add(centerPanel, BorderLayout.CENTER);
  		//padding
  		centerPanel.add(Box.createRigidArea(new Dimension(5, 0)));
  
  		// labels panel
  		JPanel labelsPanel = new JPanel();
  		labelsPanel.setLayout(new BoxLayout(labelsPanel, BoxLayout.PAGE_AXIS));
  		centerPanel.add(labelsPanel);
  		
  		// fields panel
  		JPanel fieldsPanel = new JPanel();
  		fieldsPanel.setLayout(new BoxLayout(fieldsPanel, BoxLayout.PAGE_AXIS));
  		centerPanel.add(fieldsPanel);
  		//padding
  		centerPanel.add(Box.createRigidArea(new Dimension(5, 0)));
  		
  		JLabel[] fieldsLabels = new JLabel[fieldsNames.length];
  		for(int i=0; i<fields.length; i++) {
  			fieldsPanel.add(fields[i]);
  			
  			fieldsLabels[i] = new JLabel(fieldsNames[i]);
  			fieldsLabels[i].setAlignmentX(Component.RIGHT_ALIGNMENT);
  			fieldsLabels[i].setMaximumSize(new Dimension(fieldsLabels[i].getPreferredSize().width, fields[i].getPreferredSize().height));
  			labelsPanel.add(fieldsLabels[i]);
  		}
  		
  		// buttons
  		
  		JPanel buttonsPanel = new JPanel(new FlowLayout());
  		mainPanel.add(buttonsPanel, BorderLayout.SOUTH);
  
  		ok = new JButton("Ok");
  		ok.addActionListener(this);
  		buttonsPanel.add(ok);
  		
  		cancel = new JButton("Cancel");
  		cancel.addActionListener(this);
  		buttonsPanel.add(cancel);
  		
  		setResizable(false);
  		pack();
  		setLocationRelativeTo(null);
  		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  
  		
  		// load prev music
  		music = musicPrev;
  		if(musicPrev != null)
  			updateFeildsToMusic();
  		
  		// format and compute disabled fields
  		updateFields();
  	}
  	
  	private void updateFeildsToMusic() {
  		int[] pattern = music.getMusicPattern().getPattern();
  		((JTextField) fields[0]).setText(String.valueOf(pattern[0]));
  		((JTextField) fields[1]).setText(String.valueOf(pattern[1]));
  		((JTextField) fields[2]).setText(String.valueOf(pattern[2]));
  		((JTextField) fields[3]).setText(String.valueOf(pattern[3]));
  		((JTextField) fields[4]).setText(String.valueOf(pattern[4]));
  
  		((JTextField) fields[5]).setText(String.valueOf(music.getMusicPattern().getRepeat()));
  		((JTextField) fields[6]).setText(String.valueOf(music.getMusicPattern().getBegin()));
  		
  		((JSlider) fields[7]).setValue((int) (music.getVolume() * 10d));
  
  		MusicPath path = music.getMusicPath();
  		((JComboBox<?>) fields[8]).setSelectedIndex(path.getAnimation());
  		
  		((JTextField) fields[9]).setText(String.valueOf(path.getEffectDuration()));
  	}
  	
  	public Music showDialog() {
  		setVisible(true);
  		return music;
  	}
  
  	@Override
  	public void actionPerformed(ActionEvent e) {
  		if(e.getSource() == ok) {
  			updateFields();
  			
  			int lowTime = (int) Util.textToTick(((JTextField) fields[0]).getText());
  			int raiseTime = (int) Util.textToTick(((JTextField) fields[1]).getText());
  			int highTime = (int) Util.textToTick(((JTextField) fields[2]).getText());
  			int fallTime = (int) Util.textToTick(((JTextField) fields[3]).getText());
  			int pauseTime = (int) Util.textToTick(((JTextField) fields[4]).getText());
  			int repeats = Integer.parseInt(((JTextField) fields[5]).getText());
  			long beginTime = Util.textToTick(((JTextField) fields[6]).getText());
  			
  			int animationId = ((JComboBox<?>) fields[8]).getSelectedIndex();
  			int effectDuration = (int) Util.textToTick(((JTextField) fields[9]).getText());
  			
  			MusicPattern musicPattern = new MusicPattern(new int[] {lowTime, raiseTime, highTime, fallTime, pauseTime}, repeats, beginTime);
  			MusicPath musicPath = new MusicPath(animationId, effectDuration);
  			double volume = (double) ((JSlider) fields[7]).getValue() / (double) ((JSlider) fields[7]).getMaximum();
  			
  			//invalid params
  			if((lowTime == 0 && raiseTime == 0 && highTime == 0 && fallTime == 0 && pauseTime == 0)
  					|| (repeats <= 0)
  					|| (beginTime < 0)
  					|| (effectDuration < 0)) {
  				music = null;
  				dispose();
  				return;
  			}
  			
  			music = new Music(musicPattern, musicPath, volume);
  			
  			dispose();
  		} else if(e.getSource() == cancel) {
  			music = null;
  			dispose();
  		}
  	}
  	
  	public void updateFields() {
  		// format textfields
  		for(int i=0; i<fields.length; i++) {
  			if(fields[i] instanceof JTextField && i != 5)
  				((JTextField) fields[i]).setText(Util.formatTime(((JTextField) fields[i]).getText()));
  			else if(i == 5) {
  				try {
  					int n = Integer.parseInt(((JTextField) fields[i]).getText());
  					if(n < 1)
  						((JTextField) fields[i]).setText("1");
  				}catch (NumberFormatException e) {
  					((JTextField) fields[i]).setText("1");
  				}
  			}
  		}
  
  		// compute patter time and total time
  		long lowTime = Util.textToTick(((JTextField) fields[0]).getText());
  		long raiseTime = Util.textToTick(((JTextField) fields[1]).getText());
  		long highTime = Util.textToTick(((JTextField) fields[2]).getText());
  		long fallTime = Util.textToTick(((JTextField) fields[3]).getText());
  		long pauseTime = Util.textToTick(((JTextField) fields[4]).getText());
  		int repeats = Integer.parseInt(((JTextField) fields[5]).getText());
  
  		long patterTime = lowTime + raiseTime + highTime + fallTime + pauseTime;
  		((JTextField) fields[10]).setText(Util.tickToText(patterTime));
  		long totalTime = patterTime * repeats;
  		((JTextField) fields[11]).setText(Util.tickToText(totalTime));
  	}
  
  	@Override
  	public void focusGained(FocusEvent e) {}
  
  	@Override
  	public void focusLost(FocusEvent e) {
  		updateFields();
  	}
  }