/*****************************************************/
/*          This java file is a part of the          */
/*                                                   */
/*           -  Plouf's Java IRC Client  -           */
/*                                                   */
/*   Copyright (C)  2002 - 2004 Philippe Detournay   */
/*                                                   */
/*         All contacts : theplouf@yahoo.com         */
/*                                                   */
/*  PJIRC is free software; you can redistribute     */
/*  it and/or modify it under the terms of the GNU   */
/*  General Public License as published by the       */
/*  Free Software Foundation; version 2 or later of  */
/*  the License.                                     */
/*                                                   */
/*  PJIRC is distributed in the hope that it will    */
/*  be useful, but WITHOUT ANY WARRANTY; without     */
/*  even the implied warranty of MERCHANTABILITY or  */
/*  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   */
/*  General Public License for more details.         */
/*                                                   */
/*  You should have received a copy of the GNU       */
/*  General Public License along with PJIRC; if      */
/*  not, write to the Free Software Foundation,      */
/*  Inc., 59 Temple Place, Suite 330, Boston,        */
/*  MA  02111-1307  USA                              */
/*                                                   */
/*****************************************************/

package irc.gui.pixx;

import irc.StyleContext;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Panel;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

/**
 * The style selector.
 */
public class AWTStyleSelector extends Panel implements MouseListener {
	private PixxConfiguration _pixxConfiguration;
	private StyleContext _ct;
	private int _color;
	private int _backColor;
	private boolean _bold;
	private boolean _underline;

	/**
	 * Create a new AWTStyleSelector.
	 * 
	 * @param config
	 *          global irc configuration.
	 */
	public AWTStyleSelector(PixxConfiguration config) {
		super();
		_pixxConfiguration = config;
		_color = 1;
		_backColor = 0;
		_bold = false;
		_underline = false;
		addMouseListener(this);
		_ct = _pixxConfiguration.getIRCConfiguration().getDefaultStyleContext();
	}

	/**
	 * Release this object.
	 */
	public void release() {
		removeMouseListener(this);
		_pixxConfiguration = null;
	}

	/**
	 * Set the style context.
	 * 
	 * @param ct
	 *          style context.
	 */
	public void setStyleContext(StyleContext ct) {
		_ct = ct;
	}

	@Override
	public void paint(Graphics g) {
		update(g);
	}

	private void drawSelect(Graphics g, int i, int j) {
		int x = (int) (i * getItemWidth());
		int y = (int) (j * getItemHeight());
		int w = (int) getItemWidth();
		int h = (int) getItemHeight();
		g.setColor(Color.black);
		g.drawRect(x + 1, y + 1, w - 2, h - 2);
		g.setColor(Color.white);
		g.drawRect(x, y, w - 2, h - 2);
	}

	private void drawColor(Graphics g, int i, int j, Color c) {
		int x = (int) (i * getItemWidth());
		int y = (int) (j * getItemHeight());
		int w = (int) getItemWidth();
		int h = (int) getItemHeight();
		g.setColor(c);
		g.fillRect(x, y, w, h);
	}

	private void drawBold(Graphics g, int i, int j) {
		int x = (int) (i * getItemWidth());
		int y = (int) (j * getItemHeight());
		int w = (int) getItemWidth();
		int h = (int) getItemHeight();
		int tw = g.getFontMetrics().stringWidth("a");
		g.drawString("a", x + (w - tw) / 2, y + h - (h - g.getFont().getSize()) / 2 - 2);
		g.drawString("a", x + (w - tw) / 2 + 1, y + h - (h - g.getFont().getSize()) / 2 - 2);
	}

	private void drawUnderline(Graphics g, int i, int j) {
		int x = (int) (i * getItemWidth());
		int y = (int) (j * getItemHeight());
		int w = (int) getItemWidth();
		int h = (int) getItemHeight();
		int tw = g.getFontMetrics().stringWidth("a");
		g.drawString("a", x + (w - tw) / 2, y + h - (h - g.getFont().getSize()) / 2 - 2);

		g.drawLine(x + w / 2 - tw / 2, y + h - 1, x + w / 2 + tw / 2, y + h - 1);
	}

	@Override
	public void update(Graphics g) {
		int w = getSize().width;
		int h = getSize().height;

		Image buffer;
		Graphics gra;
		try {
			buffer = createImage(w, h);
			gra = buffer.getGraphics();
		} catch (Throwable e) {
			return;
		}

		Color[] cols = _pixxConfiguration.getIRCConfiguration().getStyleColors(_ct);
		int c = 0;
		for (int y = 0; y < 2; y++) {
			for (int x = 1; x < 9; x++) {
				drawColor(gra, x, y, cols[c]);
				if (c == _color)
					drawSelect(gra, x, y);
				c++;
			}
		}

		gra.setColor(cols[_backColor]);
		gra.fillRect(0, 0, (int) getItemWidth(), h);

		gra.setColor(cols[_color]);
		drawBold(gra, 0, 0);
		drawUnderline(gra, 0, 1);

		if (_bold)
			drawSelect(gra, 0, 0);
		if (_underline)
			drawSelect(gra, 0, 1);

		g.drawImage(buffer, 0, 0, this);
	}

	@Override
	public Dimension getPreferredSize() {
		return new Dimension(9 * 10, 10);
	}

	private double getItemWidth() {
		return getSize().width / 9.0;
	}

	private double getItemHeight() {
		return getSize().height / 2.0;
	}

	/**
	 * Set the front color.
	 * 
	 * @param c
	 *          the new front color.
	 */
	public void setFrontColor(int c) {
		_color = c;
		repaint();
	}

	/**
	 * Set the back color.
	 * 
	 * @param c
	 *          the new back color.
	 */
	public void setBackColor(int c) {
		_backColor = c;
		repaint();
	}

	/**
	 * Set the new bold status.
	 * 
	 * @param bold
	 *          the new bold status.
	 */
	public void setBold(boolean bold) {
		_bold = bold;
		repaint();
	}

	/**
	 * Set the new underline status.
	 * 
	 * @param underline
	 *          the new underline statu.
	 */
	public void setUnderline(boolean underline) {
		_underline = underline;
		repaint();
	}

	/**
	 * Get prefix to be used for text styling.
	 * 
	 * @return text style prefix.
	 */
	public String getPrefix() {
		String pre = "";
		if (_color != 1 || _backColor != 0) {
			String c1 = "";
			if (_color != 1) {
				c1 = c1 + _color;
				if (_color < 10)
					c1 = "0" + c1;
			}
			String c2 = "";
			if (_backColor != 0) {
				c2 = "" + _backColor;
				if (_backColor < 10)
					c2 = "0" + c2;
				c2 = "," + c2;
			}
			if (c2.length() > 0 && c1.length() == 0)
				c1 = "1";
			pre = pre + (char) 3 + c1 + c2;
		}
		if (_bold)
			pre += (char) 2;
		if (_underline)
			pre += (char) 31;
		return pre;
	}

	@Override
	public void mouseClicked(MouseEvent e) {
	}

	@Override
	public void mouseEntered(MouseEvent e) {
	}

	@Override
	public void mouseExited(MouseEvent e) {
	}

	@Override
	public void mousePressed(MouseEvent e) {
		int x = (int) (e.getX() / getItemWidth());
		int y = (int) (e.getY() / getItemHeight());
		if (x == 0) {
			if (y == 0)
				_bold = !_bold;
			if (y == 1)
				_underline = !_underline;
		} else {
			x--;
			if ((e.getModifiers() & InputEvent.BUTTON1_MASK) != 0)
				_color = x + y * 8;
			else
				_backColor = x + y * 8;
		}
		repaint();
	}

	@Override
	public void mouseReleased(MouseEvent e) {
	}

}