package de.intevation.mxd.writer;

import java.awt.Color;

import org.apache.log4j.Logger;

import org.w3c.dom.Element;

import edu.umn.gis.mapscript.mapObj;
import edu.umn.gis.mapscript.classObj;
import edu.umn.gis.mapscript.styleObj;
import edu.umn.gis.mapscript.colorObj;
import edu.umn.gis.mapscript.symbolObj;
import edu.umn.gis.mapscript.symbolSetObj;


/**
 * The interface to the mapfile writer.
 *
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
public class LineStyleWriter {

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

    private mapObj map;
    private classObj cl;
    private styleObj style;

    public LineStyleWriter (mapObj map, classObj cl) {
        this.map = map;
        this.cl = cl;
        this.style = new styleObj(cl);
    }

    /**
     * Write the content.
     */
    public boolean write(Element symbolElement)
    throws Exception {
        logger.debug("write(Element)");
        symbolSetObj symbolSet = map.getSymbolset();
        if(symbolElement.hasAttribute("angle")) {
            style.setAngle(
                Double.parseDouble(symbolElement.getAttribute("angle")));
        }
        if(symbolElement.hasAttribute("color")) {
            String c = symbolElement.getAttribute("color");
            Color col = Color.decode(c);
            colorObj color = new colorObj(
                col.getRed(),
                col.getGreen(),
                col.getBlue(),
                -4);
            style.setColor(color);
        }
        if(symbolElement.hasAttribute("width")) {
            style.setWidth((int)Double.parseDouble(
                symbolElement.getAttribute("width")));
        }
        if(symbolElement.hasAttribute("size")) {
            style.setSize((int)Double.parseDouble(
                symbolElement.getAttribute("size")));
        }
        String name = symbolElement.getAttribute("name");
        symbolObj sym = symbolSet.getSymbolByName(name);

        //The following lines are for dashed and/or dotted lines.
        //These lines throw an "incorrect array size" error.
        //TODO Find out how to set the pattern correctly.(Remove the "&& false"
        //to use this block).
        if(symbolElement.hasAttribute("linestyle") && false) {
            String ls = symbolElement.getAttribute("linestyle");
            double[] vals;
            if(ls.equals("dash")) {
                style.setPatternlength(2);
                vals = new double[] {2.0, 2.0};
                style.setPattern(vals);
            }
            else if(ls.equals("dot")) {
                style.setPatternlength(2);
                vals = new double[] {1.0, 2.0};
                style.setPattern(vals);
            }
            else if(ls.equals("dashdot")) {
                style.setPatternlength(4);
                vals = new double[] {2.0, 2.0, 1.0, 2.0};
                style.setPattern(vals);
            }
            else if (ls.equals("dashdotdot")) {
                style.setPatternlength(6);
                vals = new double[] {2.0, 2.0, 1.0, 2.0, 1.0, 2.0};
                style.setPattern(vals);
            }
        }
        String type = symbolElement.getAttribute("type");

        if(type.equals("marker")) {
            style.setSymbolByName(map, name);
            SymbolWriter sw = new SymbolWriter(this.map, this.cl);
            sw.write(symbolElement);
        }
        return false;
    }
}
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