/*
 * $Header: /cvsroot/jetty/Jetty/src/org/apache/jasper/compiler/PluginGenerator.java,v 1.1 2000/10/09 17:57:41 gregwilkins Exp $
 * $Revision: 1.1 $
 * $Date: 2000/10/09 17:57:41 $
 *
 * ====================================================================
 * 
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */ 

package org.apache.jasper.compiler;

import java.util.Hashtable;
import java.util.Enumeration;

import org.apache.jasper.JasperException;
import org.apache.jasper.Constants;
import org.apache.jasper.JspCompilationContext;

/**
 * Generator for <jsp:plugin>
 *
 * @author Rajiv Mordani [mode@eng.sun.com]
 */
public class PluginGenerator 
    extends GeneratorBase
    implements ServiceMethodPhase 
{
    Hashtable attrs;
    Hashtable param;
    String fallback;

    String ieClassId;
    Mark start;
    
    
    public PluginGenerator(Mark start, Hashtable attrs, Hashtable param,
                           String fallback) {
    	this.attrs = attrs;
        this.param = param;
        this.fallback = fallback;
        this.start = start;
    }

    public void init(JspCompilationContext ctxt) throws JasperException {
        ieClassId = ctxt.getOptions().getIeClassId();
    }
    
    public void generate(ServletWriter writer, Class phase) 
    				throws JasperException
    {
        String type = getAttribute ("type");
        String code = getAttribute ("code");
        String codebase = getAttribute ("codebase");
        String archive = getAttribute ("archive");
        String jreversion = getAttribute ("jreversion");
        String name = getAttribute ("name");
        String nspluginurl = getAttribute ("nspluginurl");
        String iepluginurl = getAttribute ("iepluginurl");

        if (type == null)
            throw new CompileException (start, Constants.getString (
            				"jsp.error.plugin.notype"));
        if (code == null)
            throw new CompileException (start, Constants.getString (
            				"jsp.error.plugin.nocode"));

        writer.popIndent ();
        writer.println ("/*Code generated for plugin*/");
        writer.indent ();
        writer.print ("out.println (\"<OBJECT classid=\\\"");
        writer.print (ieClassId);
        writer.print ("\\\"");
        generateCommon (writer);
        writer.print (" codebase=\\\"");
        if (iepluginurl == null)
            writer.print (Constants.IE_PLUGIN_URL);
        else 
            writer.print (iepluginurl);
        
        writer.print ("\\\"");
        writer.print (">\");");
        // Done to avoid spaces being generated between the closing angular
        // bracket of the tag.
        writer.println ();
        writer.indent ();
        writer.print ("out.println (\"<PARAM name=\\\"java_code\\\"");
        writer.print (" value=\\\"");
        writer.print (code);
        writer.print ("\\\"");
        writer.print (">\");");
        writer.println ();

        if (codebase != null) {
            writer.indent ();
            writer.print ("out.println (\"<PARAM name=\\\"java_codebase\\\"");
            writer.print (" value=\\\"");
            writer.print (codebase);
            writer.print ("\\\"");
            writer.print (">\");");
            writer.println ();
        }

        if (archive != null) {
            writer.indent ();
            writer.print ("out.println (\"<PARAM name=\\\"java_archive\\\"");
            writer.print (" value=\\\"");
            writer.print (archive);
            writer.print ("\\\"");
            writer.print (">\");");
            writer.println ();
        }

        writer.indent ();
        writer.print ("out.println (\"<PARAM name=\\\"type\\\"");
        writer.print (" value=\\\"");
        if (type.equals ("applet")) 
            writer.print ("application/x-java-applet;");
        else if (type.equals ("bean"))
            writer.print ("application/x-java-bean;");
        if (jreversion != null) {
            writer.print ("version=");
            writer.print (jreversion);
        }
        writer.print ("\\\"");
        writer.print (">\");");
        writer.println ();

        // Evaluate params and if expression get the appropriate code for
        // the expression

        Enumeration e = null;
        String value [] = null;
        String key = null;

        writer.indent ();
        writer.print ("String _jspxString = null;");
        writer.println ();

        if (param != null) {
            e = param.keys ();
            while (e.hasMoreElements ()) {
                key = (String) e.nextElement ();
                value = (String[]) param.get (key);
                writer.indent ();
         	//Check to see if the param is an expression, if so
                //evaluate that and put the value.
                String temp = null;
                if (JspUtil.isExpression (value[0])) {
                    temp = JspUtil.getExpr (value[0]);
                    //value[0] = JspUtil.getExpr(value[0]);
                    writer.print ("_jspxString =" + temp + ";");
                } else {
                    writer.print ("_jspxString = \"" + value[0] + "\";");
                }
                writer.println ();
                writer.indent ();
                writer.print ("out.println (\"<PARAM name=\\\"");
                if (key.equalsIgnoreCase ("object"))
                    writer.print ("java_object");
                else if (key.equalsIgnoreCase ("type"))
                    writer.print ("java_type");
                else 
                    writer.print (key);
                writer.print ("\\\"");
                writer.print (" value=\\\"\"");
                writer.print ("+ _jspxString + ");
                writer.print ("\"\\\"");
                writer.print (">\");");
                writer.println ();
            }
        }

        writer.indent ();
        writer.print ("String [][] _jspxNSString = null;"); 
        writer.println ();
        writer.indent ();
        writer.print ("int i = 0;");
        writer.println ();
        if (param != null) {
            e = param.keys ();
            writer.indent ();
            writer.indent ();
            writer.print ("_jspxNSString = new String [");
            Integer temp = new Integer (param.size ());
            writer.print (temp.toString ());
            writer.print ("][2];");
            writer.println ();
            writer.indent ();
            key = null;
            value = null;
            while (e.hasMoreElements ()) {
                key = (String) e.nextElement ();
                value = (String[]) param.get (key);
                writer.print ("_jspxNSString [i][0] = \"");
                if (key.equalsIgnoreCase ("object"))
                    key = "java_object";
                else if (key.equalsIgnoreCase ("type"))
                    key = "java_type";
                writer.print (key);
                writer.print ("\";");
                writer.println ();
                writer.indent ();

                //value = (String[]) param.get (key);
                if (JspUtil.isExpression (value[0])) {
                    value[0] = JspUtil.getExpr(value[0]);
                    writer.print ("_jspxNSString[i][1] =" + value[0] + ";");
                } else {
                    writer.print ("_jspxNSString[i][1] = \"" + value[0] + 
                    			"\";");
                }
                writer.println ();
                writer.indent ();
                writer.print ("i++;");
                writer.println ();
            }
        }
        
        writer.println ("out.println (\"<COMMENT>\");");
        writer.indent ();
        writer.print ("out.print (\"<EMBED type=\\\"");
        if (type.equals ("applet")) 
            writer.print ("application/x-java-applet;");
        else if (type.equals ("bean"))
            writer.print ("application/x-java-bean;");
        if (jreversion != null) {
            writer.print ("version=");
            writer.print (jreversion);
        }
        writer.print ("\\\" ");
        generateCommon (writer);
        writer.print ("pluginspage=\\\"");
        if (nspluginurl == null)
            writer.print (Constants.NS_PLUGIN_URL);
        else 
            writer.print (nspluginurl);
        
        writer.print ("\\\" ");
        
        writer.print ("java_code=\\\"");
        writer.print (code);
        writer.print ("\\\" ");
        if (codebase != null) {
            writer.print ("java_codebase=\\\"");
            writer.print (codebase);
            writer.print ("\\\" ");
        }

        if (archive != null) {
            writer.print ("java_archive=\\\"");
            writer.print (archive);
            writer.print ("\\\" ");
        }

        writer.print ("\");");
        writer.println ();


        writer.indent ();
        writer.print ("if (_jspxNSString != null) {");
        writer.println ();
        writer.pushIndent ();
        writer.indent ();
        writer.print ("for (i = 0; i < _jspxNSString.length; i++) {");
        writer.println ();
        writer.pushIndent ();
        writer.indent ();
        writer.print ("out.println (");
        writer.print (" _jspxNSString [i][0] + ");
        writer.print ("\"=\"");
        writer.print (" + _jspxNSString[i][1]");
        writer.print (");");
        writer.println ();
        writer.popIndent ();
        writer.println ("}");
        writer.popIndent ();
        writer.println ("}");
        writer.println ("out.println (\">\");");
        writer.println ("out.println (\"<NOEMBED>\");");
        writer.println ("out.println (\"</COMMENT>\");");

        if (fallback != null) {
            fallback = writer.quoteString (fallback);
            writer.indent ();
            writer.print ("out.println (");
            writer.print (fallback);
            writer.print (");");
            writer.println ();
        }
        writer.println ("out.println (\"</NOEMBED></EMBED>\");");
        writer.println ("out.println (\"</OBJECT>\");");
        writer.pushIndent ();
    }

    public void generateCommon (ServletWriter writer) {
        String align = getAttribute ("align");
        String width = getAttribute ("width");
        String height = getAttribute ("height");
        String hspace = getAttribute ("hspace");
        String vspace = getAttribute ("vspace");

        if (width != null) {
            writer.print (" width=\\\"");
            writer.print (width);
            writer.print ("\\\" ");
        }

        if (height != null) {
            writer.print (" height=\\\"");
            writer.print (height);
            writer.print ("\\\" ");
        }

        if (hspace != null) {
            writer.print (" hspace=\\\"");
            writer.print (hspace);
            writer.print ("\\\" ");
        }

        if (vspace != null) {
            writer.print (" vspace=\\\"");
            writer.print (vspace);
            writer.print ("\\\" ");
        }

        if (align != null) {
            writer.print (" align=\\\"");
            writer.print (align);
            writer.print ("\\\" ");
        }

    }

    public String getAttribute(String name) {
        return (attrs != null) ? (String) attrs.get(name) : null;
    }
}