package de.intevation.mxd.reader;

import java.awt.Color;

import org.apache.log4j.Logger;

import com.esri.arcgis.display.ISymbol;
import com.esri.arcgis.display.IFillSymbol;
import com.esri.arcgis.display.ILineSymbol;
import com.esri.arcgis.display.LineFillSymbol;
import com.esri.arcgis.display.IRgbColor;
import com.esri.arcgis.display.RgbColor;

import org.w3c.dom.Element;
import java.io.IOException;

/**
 * Reads marker line symbol information.
 *
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
public class LineFillSymbolReader
extends AbstractSymbolReader{

    /**
     * The logger.
     */
    private static final Logger logger =
        Logger.getLogger(LineFillSymbolReader.class);

    /**
     * Private member.
     */
    private LineFillSymbol symbol;

    /**
     * Constructor with symbol.
     *
     * @param symbol The symbol used to display polygons.
     */
    public LineFillSymbolReader(ISymbol symbol)
    throws Exception {
        logger.debug("contructor()");
        if(symbol instanceof LineFillSymbol) {
            this.symbol = (LineFillSymbol)symbol;
        }
        else {
            throw new Exception("Not a LineFillSymbol!");
        }
    }

    /**
     * Constructor with symbol.
     *
     * @param symbol The symbol used to display polygons.
     */
    public LineFillSymbolReader(IFillSymbol symbol)
    throws Exception {
        logger.debug("contructor()");
        if(symbol instanceof LineFillSymbol) {
            this.symbol = (LineFillSymbol)symbol;
        }
        else {
            throw new Exception("Not a LineFillSymbol!");
        }
    }

    /**
     * Reads the symbol attributes.
     *
     * @return The XML node.
     */
    public Element read() {
        logger.debug("read()");

        Element symbolElement = util.addSymbol(parent);

        try {
            symbolElement.setAttribute("name", symbol.getNameString());
        }
        catch(IOException ioe) {
            logger.warn("Could not read name. Setting name to \"default\".");
            symbolElement.setAttribute("name", "default");
        }
        symbolElement.setAttribute("style", "fill");

        try {
            symbolElement.setAttribute(
                "offset",
                String.valueOf(symbol.getOffset()));
        }
        catch(IOException ioe) {
            logger.warn("Could not read offset.");
        }

        try {
            symbolElement.setAttribute(
                "separation",
                String.valueOf(symbol.getSeparation()));
        }
        catch(IOException ioe) {
            logger.warn("Could not read separation.");
        }

        try {
            symbolElement.setAttribute(
                "angle",
                String.valueOf(symbol.getAngle()));
        }
        catch(IOException e) {
            logger.warn("Could not read angle.");
        }

        try {
            if(symbol.getColor() instanceof IRgbColor) {
                IRgbColor color = (IRgbColor)symbol.getColor();
                Color c = new Color (
                    color.getRed(),
                    color.getGreen(),
                    color.getBlue());
                symbolElement.setAttribute("color", String.valueOf(c.getRGB()));
                symbolElement.setAttribute("transparency",
                    String.valueOf(color.getTransparency()));
            }
            else {
                RgbColor col = new RgbColor();
                col.setRGB(symbol.getColor().getRGB());
                Color c = new Color (
                    col.getRed(),
                    col.getGreen(),
                    col.getBlue());
                symbolElement.setAttribute("color", String.valueOf(c.getRGB()));
                symbolElement.setAttribute("transparency",
                    String.valueOf(col.getTransparency()));
            }
        }
        catch(IOException ioe) {
            logger.warn("Could not read color.");
        }

        try {
            ILineSymbol ols = symbol.getOutline();
            LineSymbolReader olsr = new LineSymbolReader();
            if(olsr.canRead(ols)) {
                olsr.setSymbol(ols);
                olsr.setUtil(util);
                olsr.setParent(symbolElement);
                olsr.read();
            }
            else {
                logger.debug("The type of " + ols.getClass().toString() +
                             " is not implemented!");
            }
        }
        catch(Exception e) {
            logger.warn("Could not read outline.");
        }

        try {
            ILineSymbol ls = symbol.getLineSymbol();
            LineSymbolReader lsr = new LineSymbolReader();
            if(lsr.canRead(ls)) {
                symbolElement.setAttribute("hatch", "1");
                lsr.setSymbol(ls);
                lsr.setUtil(util);
                lsr.setParent(symbolElement);
                lsr.read();
            }
            else {
                logger.debug("The type of " + ls.getClass().toString() +
                             " is not implemented!");
            }
        }
        catch(Exception e) {
            logger.warn("Could not read line symbol.");
        }
        return parent;
    }
}
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