/*******************************************************************************
 * Copyright 2010 Simon Mieth
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package org.kabeja.dxf.parser;

import java.util.Hashtable;
import java.util.Iterator;

import org.kabeja.dxf.parser.table.DXFTableHandler;
import org.kabeja.parser.ParseException;


/**
 * @author <a href="mailto:simon.mieth@gmx.de>Simon Mieth</a>
 *
 */
public class DXFTableSectionHandler extends AbstractSectionHandler
    implements DXFHandlerManager {
    public final static String sectionKey = "TABLES";
    public final static String TABLE_START = "TABLE";
    public final static String TABLE_END = "ENDTAB";
    public final int TABLE_CODE = 0;
    private String table = "";
    private DXFTableHandler handler;
    private Hashtable handlers = new Hashtable();
    private boolean parse = false;

    public DXFTableSectionHandler() {
    }

    /*
     * (non-Javadoc)
     *
     * @see org.dxf2svg.parser.SectionHandler#getSectionKey()
     */
    public String getSectionKey() {
        return sectionKey;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.dxf2svg.parser.SectionHandler#parseGroup(int, java.lang.String)
     */
    public void parseGroup(int groupCode, DXFValue value) throws ParseException {
        if (groupCode == TABLE_CODE) {
            //switch table
            if (TABLE_END.equals(value)) {
                table = "";

                if (parse) {
                    handler.endParsing();
                    parse = false;
                }
            } else if (TABLE_START.equals(value)) {
            } else {
                if (parse) {
                    handler.endParsing();
                }

                table = value.getValue();

                if (handlers.containsKey(table)) {
                    handler = (DXFTableHandler) handlers.get(table);
                    handler.setDocument(this.doc);
                    handler.startParsing();
                    parse = true;
                } else {
                    parse = false;
                }
            }
        } else {
            if (parse) {
                handler.parseGroup(groupCode, value);
            }
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see org.dxf2svg.parser.SectionHandler#endParsing()
     */
    public void endSection() {
    }

    /*
     * (non-Javadoc)
     *
     * @see org.dxf2svg.parser.SectionHandler#startParsing()
     */
    public void startSection() {
        parse = false;
    }

    public void addHandler(DXFHandler handler) {
        addDXFTableHandler((DXFTableHandler) handler);
    }

    public void addDXFTableHandler(DXFTableHandler handler) {
        handlers.put(handler.getTableType(), handler);
    }

    /* (non-Javadoc)
     * @see de.miethxml.kabeja.parser.Handler#releaseDXFDocument()
     */
    public void releaseDocument() {
        this.doc = null;

        Iterator i = handlers.values().iterator();

        while (i.hasNext()) {
            DXFHandler handler = (DXFHandler) i.next();
            handler.releaseDocument();
        }
    }
}