/*******************************************************************************
 * Copyright (c) 2004, 2008 IBM Corporation and Others
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Kentarou FUKUDA - initial API and implementation
 *******************************************************************************/


package org.eclipse.actf.visualization.engines.blind.html.ui.elementViewer;

import java.util.Enumeration;
import java.util.HashSet;

import org.eclipse.actf.util.ui.IElementViewerInfoProvider;
import org.eclipse.actf.visualization.engines.blind.html.internal.util.VisualizationAttributeInfo;
import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;


public class ElementLabelAndColorProvider extends LabelProvider implements ITableLabelProvider, IColorProvider {

    private static String CATEGORY[];

    // TODO more sets
    private static int[][] BG_COLORS = { { 153, 255, 0 }, { 51, 204, 255 }, { 255, 153, 0 }, { 255, 128, 255 },
            { 153, 51, 255 }, { 0, 255, 153 } };

    public ElementLabelAndColorProvider() {
        // if (ParamSystem.isUseInternal()) {
        IElementViewerInfoProvider[] providers = ElementInfoProviderExtension.getProviders();
        HashSet<String> tmpS = new HashSet<String>();
        for (int i = 0; i < providers.length; i++) {
            Enumeration keys = providers[i].getCategories();
            while (keys.hasMoreElements()) {
                tmpS.add((String) keys.nextElement());
            }
        }
        CATEGORY = new String[tmpS.size()];
        tmpS.toArray(CATEGORY);
    }

    public Image getColumnImage(Object arg0, int arg1) {
        return null;
    }

    public String getColumnText(Object arg0, int arg1) {
        VisualizationAttributeInfo eleInfo = (VisualizationAttributeInfo) arg0;
        switch (arg1) {
        case 0:
            return eleInfo.getCategory();
        case 1:
            return eleInfo.getAttributeValue();
        case 2:
            return eleInfo.getTagName();
        case 3:
            return eleInfo.getDescription();
        }
        return null;
    }

    public Color getForeground(Object arg0) {
        return null;
    }

    public Color getBackground(Object arg0) {
        VisualizationAttributeInfo eleInfo = (VisualizationAttributeInfo) arg0;

        for (int i = 0; i < CATEGORY.length; i++) {
            if (eleInfo.getCategory().equals(CATEGORY[i])) {
                // return Display.getCurrent().getSystemColor(
                // backColor[i % backColor.length]);
                // System.out.println(i);
                return new Color(Display.getCurrent(), new RGB(BG_COLORS[i % BG_COLORS.length][0], BG_COLORS[i
                        % BG_COLORS.length][1], BG_COLORS[i % BG_COLORS.length][2]));
            }
        }
        return null;
    }

}