/*

* 19:34:16 10/09/99

*

* XInsertHandler.java - Handles xml-insert files for Jext

* Copyright (C) 1999 Romain Guy - powerteam@chez.com

* Portions Copyright (C) 2000 Dominic Stolerman - dominic@sspd.org.uk

* added REFERENCE_TYPE (c) 2006 Martin Raspe - hertzhaft@biblhertz.it

* www.chez.com/powerteam

*

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or any later version.

*

* This program 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 General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/



import java.util.Stack;

import java.util.Vector;



import org.xml.sax.helpers.DefaultHandler;

import org.xml.sax.InputSource;

import org.xml.sax.Attributes;



import org.gjt.sp.util.Log;



public class XInsertHandler extends DefaultHandler {



  // private members



  private XTree tree;

  private Stack stateStack;

  private int type = XTreeItem.TEXT_TYPE;

  private String lastAttr, lastName, lastAttrValue, propValue;

  private StringBuilder lastValue;



  public XInsertHandler(XTree tree) { this.tree = tree; }



  public void attribute(String aname, String value) {

    // TYPE attribute

    if (aname.equalsIgnoreCase("TYPE")) {

      if(value.equalsIgnoreCase("MACRO"))

        type = XTreeItem.MACRO_TYPE;

      else if(value.equalsIgnoreCase("XINSERT_SCRIPT"))

        type = XTreeItem.XINSERT_SCRIPT_TYPE;

      else if(value.equalsIgnoreCase("TEXT"))

        type = XTreeItem.TEXT_TYPE;

      // new data type added here				

      else if(value.equalsIgnoreCase("NAMED_MACRO"))

        type = XTreeItem.NAMED_MACRO_TYPE;	

      // new data types added: hertzhaft 				

      else if(value.equalsIgnoreCase("ACTION"))

        type = XTreeItem.ACTION_TYPE;	

      else if(value.equalsIgnoreCase("REFERENCE"))

        type = XTreeItem.REFERENCE_TYPE;	

      else {

        type = XTreeItem.UNKNOWN_TYPE;

        Log.log(Log.WARNING, this, "Invalid value for attribute \"type\": " + value);

        }

      }

    else if (aname.equalsIgnoreCase("NAME")) {

    // NAME attribute

      lastAttr = aname;

      lastAttrValue = value;

      }

    else if (aname.equalsIgnoreCase("VALUE"))

    // VALUE attribute

      propValue = value;

    }



  @Override

  public void characters(char[] c, int off, int len) {

    // ITEM content

    if ("ITEM".equalsIgnoreCase(((String) stateStack.peek())))

      // calling append since we get value one bit at a time

      lastValue.append(new String(c, off, len));

    }



  @Override

  public void startElement(String ns, String localName, String qName, Attributes attributes) {

	// handle the attributes before pushing the element

	// (this is what the old com.microstar.xml XmlParser implementation did)

	for(int i=0;i<attributes.getLength();i++)

	{

		String aname = attributes.getLocalName(i);

		String value = attributes.getValue(i);

		attribute(aname, value);

	}

	// reset String contents

	lastValue = new StringBuilder();

	

    if ("NAME".equalsIgnoreCase(lastAttr)) {

      // named MENU

      if ("MENU".equalsIgnoreCase(localName)) {

        //Log.log(Log.DEBUG, this, "adding Menu: " + lastAttrValue);  

        tree.addMenu(lastAttrValue);

        }

      // named VARIABLE

      if ("VARIABLE".equalsIgnoreCase(localName)) {

        if(propValue == null || lastAttrValue == null)

          Log.log(Log.WARNING, this, "Can not set XInsert property");

        else

          tree.addVariable(lastAttrValue, propValue);

      }

    }

    stateStack.push(localName);

  }



  @Override

  public void endElement(String ns, String localName, String qName) {



    if (localName == null) return;

    String lastStartTag = (String) stateStack.peek();

    if (localName.equalsIgnoreCase(lastStartTag)) {

      // MENU end

      if (lastStartTag.equalsIgnoreCase("MENU"))

        tree.closeMenu();

      // ITEM end

      else if (lastStartTag.equalsIgnoreCase("ITEM")) {

        tree.addInsert(lastAttrValue, lastValue.toString(), type);

        type = XTreeItem.TEXT_TYPE;

        }

      stateStack.pop();

      } else

    System.err.println("Unclosed tag: " + stateStack.peek());

    lastAttr = null;

    lastAttrValue = null;

  }



  @Override

  public void startDocument() {

      stateStack = new Stack();

      stateStack.push(null);

  }



}

// End of XInsertHandler.java