XMLColorMapHandler.java

package edu.colostate.vchill.color;

import edu.colostate.vchill.ChillDefines;
import edu.colostate.vchill.ChillDefines.ColorType;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import java.awt.*;
import java.util.ArrayList;

/**
 * ContentHandler for VCHILL's XML color description files
 *
 * @author Jochen Deyke
 * @version 2006-01-18
 */
public class XMLColorMapHandler extends DefaultHandler {
    private ColorMap colorMap;
    private ArrayList<Color> tmpColors;
    private boolean inName;
    private boolean inRed;
    private boolean inGreen;
    private boolean inBlue;
    private String tmpName;
    private String tmpRed;
    private String tmpGreen;
    private String tmpBlue;

    public XMLColorMapHandler(final ColorMap colorMap) {
        this.colorMap = colorMap;
        this.tmpColors = new ArrayList<Color>(ChillDefines.numColorLevels);
        this.inName = false;
        this.inRed = false;
        this.inGreen = false;
        this.inBlue = false;
        this.tmpName = "";
        this.tmpRed = "";
        this.tmpGreen = "";
        this.tmpBlue = "";
    }

    public void startElement(final String namespaceURI, final String localName, final String qualifiedName, final Attributes attribs) throws SAXException {
        if ((qualifiedName.toLowerCase()).equals("name")) {
            this.inName = true;
        } else if ((qualifiedName.toLowerCase()).equals("red")) {
            this.inRed = true;
        } else if ((qualifiedName.toLowerCase()).equals("green")) {
            this.inGreen = true;
        } else if ((qualifiedName.toLowerCase()).equals("blue")) {
            this.inBlue = true;
        }
    }

    public void characters(final char[] text, final int start, final int length) throws SAXException {
        if (this.inName) {
            this.tmpName += new String(text, start, length);
        } else if (this.inRed) {
            this.tmpRed += new String(text, start, length);
        } else if (this.inGreen) {
            this.tmpGreen += new String(text, start, length);
        } else if (this.inBlue) {
            this.tmpBlue += new String(text, start, length);
        }
    }

    public void endElement(final String namespaceURI, final String localName, final String qualifiedName) throws SAXException {
        if ((qualifiedName.toLowerCase()).equals("type")) {
            this.colorMap.addType(ColorType.valueOf(this.tmpName), this.tmpColors);
            this.tmpColors = new ArrayList<Color>(ChillDefines.numColorLevels);
            this.tmpName = "";
        } else if ((qualifiedName.toLowerCase()).equals("name")) {
            this.inName = false;
        } else if ((qualifiedName.toLowerCase()).equals("color")) {
            this.tmpColors.add(new Color(
                    Integer.parseInt(this.tmpRed),
                    Integer.parseInt(this.tmpGreen),
                    Integer.parseInt(this.tmpBlue)
            ));
            this.tmpRed = "";
            this.tmpGreen = "";
            this.tmpBlue = "";
        } else if ((qualifiedName.toLowerCase()).equals("red")) {
            this.inRed = false;
        } else if ((qualifiedName.toLowerCase()).equals("green")) {
            this.inGreen = false;
        } else if ((qualifiedName.toLowerCase()).equals("blue")) {
            this.inBlue = false;
        }
    }

    //do nothing:
    public void startDocument() {
    }

    public void endDocument() {
    }

    public void startPrefixMapping(final String prefix, final String uri) {
    }

    public void endPrefixMapping(final String prefix) {
    }

    public void ignorableWhitespace(final char[] text, final int start, final int length) throws SAXException {
    }

    public void processingInstruction(final String target, final String data) {
    }

    public void skippedEntity(final String name) {
    }

    public void setDocumentLocator(final Locator locator) {
    }
}