/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JasperReports 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.jasperreports.engine.export.oasis;

import java.awt.Color;
import java.awt.font.TextAttribute;
import java.io.IOException;
import java.io.Writer;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.JRPrintGraphicElement;
import net.sf.jasperreports.engine.JRPrintText;
import net.sf.jasperreports.engine.export.JRExporterGridCell;
import net.sf.jasperreports.engine.fonts.FontFamily;
import net.sf.jasperreports.engine.fonts.FontInfo;
import net.sf.jasperreports.engine.util.JRColorUtil;
import net.sf.jasperreports.engine.util.JRFontUtil;


/**
 * @author Teodor Danciu (teodord@users.sourceforge.net)
 * @version $Id: StyleCache.java 3129 2009-10-20 13:26:08Z teodord $
 */
public class StyleCache
{
	/**
	 *
	 */
	private Writer styleWriter = null;
	private Map fontMap = null;
	private Set fontFaces = new HashSet();
	private String exporterKey = null;

	/**
	 *
	 */
	private Map frameStyles = new HashMap();//FIXMEODT soft cache?
	private int frameStylesCounter = 0;
	private Map cellStyles = new HashMap();
	private int cellStylesCounter = 0;
	private Map graphicStyles = new HashMap();
	private int graphicStylesCounter = 0;
	private Map paragraphStyles = new HashMap();
	private int paragraphStylesCounter = 0;
	private Map textSpanStyles = new HashMap();
	private int textSpanStylesCounter = 0;


	/**
	 *
	 */
	public StyleCache(Writer styleWriter, Map fontMap, String exporterKey)
	{
		this.styleWriter = styleWriter;
		this.fontMap = fontMap;
		this.exporterKey = exporterKey;
	}


	/**
	 *
	 */
	public Collection getFontFaces()
	{
		return fontFaces;
	}


	/**
	 *
	 */
	public String getFrameStyle(JRPrintText text) throws IOException //FIXMEODT is this used?
	{
		FrameStyle frameStyle  = new FrameStyle(styleWriter, text);
		frameStyle.setBox(text.getLineBox());
		
		String frameStyleId = frameStyle.getId();
		String frameStyleName = (String)frameStyles.get(frameStyleId);
		
		if (frameStyleName == null)
		{
			frameStyleName = "F" + frameStylesCounter++;
			frameStyles.put(frameStyleId, frameStyleName);
			
			frameStyle.write(frameStyleName);
		}
		
		return frameStyleName;
	}


	/**
	 *
	 */
	public String getFrameStyle(JRPrintElement element) throws IOException //FIXMEODT is this used?
	{
		FrameStyle frameStyle  = new FrameStyle(styleWriter, element);
		
		String frameStyleId = frameStyle.getId();
		String frameStyleName = (String)frameStyles.get(frameStyleId);
		
		if (frameStyleName == null)
		{
			frameStyleName = "F" + frameStylesCounter++;
			frameStyles.put(frameStyleId, frameStyleName);
			
			frameStyle.write(frameStyleName);
		}
		
		return frameStyleName;
	}


	/**
	 *
	 */
	public String getGraphicStyle(JRPrintGraphicElement element) throws IOException
	{
		GraphicStyle graphicStyle  = new GraphicStyle(styleWriter, element);
		
		String graphicStyleId = graphicStyle.getId();
		String graphicStyleName = (String)cellStyles.get(graphicStyleId);
		
		if (graphicStyleName == null)
		{
			graphicStyleName = "G" + graphicStylesCounter++;
			graphicStyles.put(graphicStyleId, graphicStyleName);
			
			graphicStyle.write(graphicStyleName);
		}
		
		return graphicStyleName;
	}


	/**
	 *
	 */
	public String getCellStyle(JRExporterGridCell gridCell) throws IOException
	{
		CellStyle cellStyle  = new CellStyle(styleWriter, gridCell);
		
//		JRPrintElement element = gridCell.getElement();
//
//		if (element instanceof JRBoxContainer)
//			cellStyle.setBox(((JRBoxContainer)element).getLineBox());
//		if (element instanceof JRCommonGraphicElement)
//			cellStyle.setPen(((JRCommonGraphicElement)element).getLinePen());
		
		String cellStyleId = cellStyle.getId();
		String cellStyleName = (String)cellStyles.get(cellStyleId);
		
		if (cellStyleName == null)
		{
			cellStyleName = "C" + cellStylesCounter++;
			cellStyles.put(cellStyleId, cellStyleName);
			
			cellStyle.write(cellStyleName);
		}
		
		return cellStyleName;
	}


	/**
	 *
	 */
	public String getParagraphStyle(JRPrintText text) throws IOException
	{
		ParagraphStyle paragraphStyle  = new ParagraphStyle(styleWriter, text);
		
		String paragraphStyleId = paragraphStyle.getId();
		String paragraphStyleName = (String)paragraphStyles.get(paragraphStyleId);
		
		if (paragraphStyleName == null)
		{
			paragraphStyleName = "P" + paragraphStylesCounter++;
			paragraphStyles.put(paragraphStyleId, paragraphStyleName);
			
			paragraphStyle.write(paragraphStyleName);
		}
		
		return paragraphStyleName;
	}


	/**
	 *
	 */
	public String getTextSpanStyle(Map attributes, String text, Locale locale) throws IOException
	{
		String fontFamilyAttr = (String)attributes.get(TextAttribute.FAMILY);
		String fontFamily = fontFamilyAttr;
		if (fontMap != null && fontMap.containsKey(fontFamilyAttr))
		{
			fontFamily = (String) fontMap.get(fontFamilyAttr);
		}
		else
		{
			FontInfo fontInfo = JRFontUtil.getFontInfo(fontFamilyAttr, locale);
			if (fontInfo != null)
			{
				//fontName found in font extensions
				FontFamily family = fontInfo.getFontFamily();
				String exportFont = family.getExportFont(exporterKey);
				if (exportFont != null)
				{
					fontFamily = exportFont;
				}
			}
		}
		fontFaces.add(fontFamily);
		
		StringBuffer textSpanStyleIdBuffer = new StringBuffer();
		textSpanStyleIdBuffer.append(fontFamily);

		String forecolorHexa = null;
		Color forecolor = (Color)attributes.get(TextAttribute.FOREGROUND);
		if (!Color.black.equals(forecolor))
		{
			forecolorHexa = JRColorUtil.getColorHexa(forecolor);
			textSpanStyleIdBuffer.append(forecolorHexa);
		}

		String backcolorHexa = null;
		Color runBackcolor = (Color)attributes.get(TextAttribute.BACKGROUND);
		if (runBackcolor != null)
		{
			backcolorHexa = JRColorUtil.getColorHexa(runBackcolor);
			textSpanStyleIdBuffer.append(backcolorHexa);
		}

		String size = String.valueOf(attributes.get(TextAttribute.SIZE));
		textSpanStyleIdBuffer.append(size);

		String weight = null;
		if (TextAttribute.WEIGHT_BOLD.equals(attributes.get(TextAttribute.WEIGHT)))
		{
			weight = "bold";
			textSpanStyleIdBuffer.append(weight);
		}
		String posture = null;
		if (TextAttribute.POSTURE_OBLIQUE.equals(attributes.get(TextAttribute.POSTURE)))
		{
			posture = "italic";
			textSpanStyleIdBuffer.append(posture);
		}
		String underline = null;
		if (TextAttribute.UNDERLINE_ON.equals(attributes.get(TextAttribute.UNDERLINE)))
		{
			underline = "single";
			textSpanStyleIdBuffer.append(underline);
		}
		String strikeThrough = null;
		if (TextAttribute.STRIKETHROUGH_ON.equals(attributes.get(TextAttribute.STRIKETHROUGH)))
		{
			strikeThrough = "single";
			textSpanStyleIdBuffer.append(strikeThrough);
		}

//		if (TextAttribute.SUPERSCRIPT_SUPER.equals(attributes.get(TextAttribute.SUPERSCRIPT)))
//		{
//			textSpanStyleIdBuffer.append(" vertical-align: super;");
//		}
//		else if (TextAttribute.SUPERSCRIPT_SUB.equals(attributes.get(TextAttribute.SUPERSCRIPT)))
//		{
//			textSpanStyleIdBuffer.append(" vertical-align: sub;");
//		}

		String textSpanStyleId = textSpanStyleIdBuffer.toString();
		String textSpanStyleName = (String)textSpanStyles.get(textSpanStyleId);
		
		if (textSpanStyleName == null)
		{
			textSpanStyleName = "T" + textSpanStylesCounter++;
			textSpanStyles.put(textSpanStyleId, textSpanStyleName);
			
			styleWriter.write("<style:style style:name=\"" + textSpanStyleName + "\"");
			styleWriter.write(" style:family=\"text\">\n");
			styleWriter.write("<style:text-properties");
			if (forecolorHexa != null)
			{
				styleWriter.write(" fo:color=\"#" + forecolorHexa+ "\"");
			}
			styleWriter.write(" style:font-name=\"" + fontFamily + "\"");
			styleWriter.write(" fo:font-size=\"" + size + "pt\"");
			if (posture != null)
			{
				styleWriter.write(" fo:font-style=\"" + posture + "\"");
			}
			if (weight != null)
			{
				styleWriter.write(" fo:font-weight=\"" + weight + "\"");
			}
			if (backcolorHexa != null)
			{
				styleWriter.write(" fo:background-color=\"#" + backcolorHexa + "\"");
			}
//			styleWriter.write(" style:text-rotation-angle=\"" + textRotationAngle + "\"");
//			styleWriter.write(" style:text-rotation-scale=\"" + textRotationScale + "\"");
			if (underline != null)
			{
				styleWriter.write(" style:text-underline-type=\"" + underline + "\"");
			}
			if (strikeThrough != null)
			{
				styleWriter.write(" style:text-line-through-type=\"" + strikeThrough + "\"");
			}
			styleWriter.write(">\n");
			styleWriter.write("</style:text-properties>\n");	
			styleWriter.write("</style:style>\n");
		}
		
		return textSpanStyleName;
	}

	
}

