/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 *

 */

package com.nokia.carbide.cpp.pi.util;

import java.util.HashMap;

import java.util.Map;

import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.Color;

import org.eclipse.swt.graphics.RGB;

import org.eclipse.swt.widgets.ColorDialog;

import org.eclipse.swt.widgets.MessageBox;

import org.eclipse.swt.widgets.Shell;

abstract public class TableColorPalette implements ITableColorPalette {

	abstract public RGB getConstantRGB(Object entry);

	// Windows palette default from here

	//http://www.mozilla.org/docs/refList/user-interface/visual/colorpalette/

								{128,128,0}, {0,0,128}, {0,255,0},

								{0,128,0}, {128,0,0}, {0,128,128},

								{0,55,60}, {204,153,102}, {0,153,255},

								{0,0,255}, {51,255,153}, {204,204,255},

								{255,0,0}, {153,153,255}, {153,0,102},

								{102,102,204}, {51,51,102}, {255,102,204}, 

								{66,154,167},{153,102,153}};

	private void add(Object entry) {

		RGB constantRGB = getConstantRGB(entry);

		if (constantRGB != null){

			// default color for SOS thread/binary/functions

			palette.put(entry, ColorPalette.getColor(constantRGB));

		} else {

			// wrap around the table and assign the same color if we've done once

			int i = currentColorIndex++ % 216;

			int indexR, indexG, indexB;

			if (i < 23){ // pick a bunch of color from Windows default palette first

						// so user won't complain too much

				indexR = defaultPalette[i][0];

				indexG = defaultPalette[i][1];

				indexB = defaultPalette[i][2];

				palette.put(entry, ColorPalette.getColor(new RGB(indexR,indexG,indexB)));

			}else {

				int index;

				i = 215 - i;	// start from lighter color for better contrast

				index = i / 3 + (i % 3) * 72;

				indexR = index % 6;

				indexG = (index / 6) % 6;

				indexB = (index / 36) % 6;

			palette.put(entry, ColorPalette.getColor(new RGB(channelValue[indexR],

															channelValue[indexG],

															channelValue[indexB])));

			}

		}

	}

	public Color getColor(Object entry) {

		if (palette.get(entry) == null) {

			add(entry);

		}

		return palette.get(entry);

	}

	public java.awt.Color getAWTColor(Object entry) {

		if (palette.get(entry) == null) {

			add(entry);

		}

		Color swtColor = palette.get(entry);

		return new java.awt.Color(

								swtColor.getRed(),

								swtColor.getGreen(),

								swtColor.getBlue()

								);

	}

	public Color assignColor(Object entry, Color color) {

		return assignColor(entry, color.getRGB());

	}

	public Color assignColor(Object entry, RGB rgb) {

		if (palette.get(entry) == null) {

			palette.remove(entry);

		}

		Color tmpColor;

		if (rgb == null) {

			// assign from 216 palette if nothing given

			tmpColor = this.getColor (entry);

		}

		else {

			tmpColor = ColorPalette.getColor(rgb);

			palette.put(entry, ColorPalette.getColor(rgb));

		}

		return tmpColor;

	}

	// returns if recolor of palette on specific entry if successful

	public boolean recolorEntryDialog(Shell parent, Object entry) {

		ColorDialog colorDialog = new ColorDialog(parent, SWT.PRIMARY_MODAL);

		colorDialog.setText(entry.toString());

		if (palette.get(entry) != null) {

			colorDialog.setRGB(palette.get(entry).getRGB());

		} else {

			colorDialog.setRGB(new RGB(255, 255, 255));

		}

		RGB newRGB = colorDialog.open();

		if (newRGB != null) {

			// allow duplicated color

			if (palette.get(entry) == null) {

				MessageBox errorDialog = new MessageBox(parent, SWT.ICON_ERROR

						| SWT.OK);

				errorDialog.setText(Messages

						.getString("TableColorPalette.change.denied")); //$NON-NLS-1$

				errorDialog

						.setMessage(Messages

								.getString("TableColorPalette.item.does.not.exist.in.palette")); //$NON-NLS-1$

				errorDialog.open();

			}

			assignColor(entry, newRGB);

			return true;

		}

		return false;

	}

	// we can use this for export

	public Map<Object, Color> getPaletteMap()

	{

		return palette;

	}

}