/*
* Clean v3.1, AJAX Engine
* Copyright 2005-2006 Carlos Eduardo Goncalves (cadu.goncalves@gmail.com)
*
* 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.
*/


function Engine(debug){
  Engine.DEBUG = debug;
  if(Engine.DEBUG)
    Console.start();
  Engine.buildProgressbar(Engine.PROGRESSBAR_VALUE);
}
Engine.PROGRESSBAR_VALUE = "<p><img src='/dms/clean/loading.gif'/>&nbsp;loading&nbsp;</p>";
Engine.HTTP_METHODS = ["GET", "POST"];
Engine.HTTP_STATUS_CODES = [
    "200 OK", "201 Created", "202 Accepted", "203 Non-Authoritative Information",
    "205 Reset Content", "204 No Content", "206 Partial Content",
    "300 Multiple Choices", "301 Moved Permanently", "302 Found", "303 See Other",
    "304 Not Modified", "305 Use Proxy", "307 Temporary Redirect",
    "400 Bad Request", "401 Unauthorized", "402 Payment Required",
    "403 Forbidden",  "404 Not Found", "405 Method Not Allowed", "406 Not Acceptable",
    "407 Proxy Authentication Required", "408 Request Timeout", "409 Conflict",
    "410 Gone", "411 Length Required", "412 Precondition Failed",
    "413 Request Entity Too Large", " 414 Request-URI Too Long", "415 Unsupported Media Type",
    "416 Requested Range Not Satisfiable", "417 Expectation Failed",
    "500 Internal Server Error", "501 Not Implemented", "502 Bad Gateway",
    "503 Service Unavailable", "504 Gateway Timeout", "505 HTTP Version Not Supported"];

Engine.reportException = function(msg_id, exception){
  if(Engine.DEBUG) {
    Console.trace(exception, Console.EXCEPTION);
  }
  else{
    var msg = MessageQueue.messages[msg_id];
    if((msg == null) || (msg.onError == null)) {
      throw exception;
	 }
    else {
      msg.onError(exception);
    }
  }
  MessageQueue.remove(msg_id);
}
Engine.buildProgressbar = function(content){
  try{
    Engine.PROGRESSBAR = document.createElement("div");
    Engine.PROGRESSBAR.innerHTML = content;
    Engine.PROGRESSBAR.align = "right";
    Engine.PROGRESSBAR.style.left = "0";
    Engine.PROGRESSBAR.style.top = "0";
    Engine.PROGRESSBAR.style.width = "100%";
    Engine.PROGRESSBAR.style.position = "absolute";
    Engine.PROGRESSBAR.style.display = "none";
	 //add Element in a unClose Element bug
    document.body.appendChild(Engine.PROGRESSBAR);
	 Engine.PROGRESSBAR.parentNode.appendChild(Engine.PROGRESSBAR);
    Engine.feedbackProgress();
  } catch(e){Engine.reportException(null, e);}
}
Engine.feedbackProgress = function(){
  Engine.PROGRESSBAR.style.top = document.body.scrollTop;
  if(MessageQueue.isEmpty()){
    if(Engine.PROGRESSBAR.style.display != "none")
      Engine.PROGRESSBAR.style.display = "none";
  }
  else{
    if(Engine.PROGRESSBAR.style.display != "block")
      Engine.PROGRESSBAR.style.display = "block";
  }
  setTimeout(Engine.feedbackProgress, 100);
}
function Message(){
  this.id = null;
  this.method = null;
  this.address = null;
  this.xslt = null;
  this.value = null;
  this.refresh = true;
  this.document = document;
  this.consumer = null;
  this.consumerObject = null;
  this.onChange = null;
  this.onError = null;
  this.onComplete = null;
}
function Connection(){
}
Connection.sendMessage = function(msg){
  try{
    var wrapper = MessageQueue.add(msg);
    msg.id = wrapper.id;
    if(msg.method.toUpperCase() == "GET")
      wrapper.request.setRequestHeader("If-Modified-Since", "Tue, 1 Jan 1980 00:00:00 GMT");
    wrapper.request.send(msg.value);
    Console.trace(msg, Console.REQUEST);
    return msg.id;
  } catch(e){Engine.reportException(msg.id, e);}
}
Connection.sendFormByMessage = function(msg, form){
  try{
    msg.method = "POST";
    msg.value = ParserTool.formToUrl(form);
    var wrapper = MessageQueue.add(msg);
    msg.id = wrapper.id;
    wrapper.request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    wrapper.request.send(msg.value);
    Console.trace(msg, Console.REQUEST);
    return msg.id;
  } catch(e){Engine.reportException(msg.id, e);}
}
Connection.abortMessage = function(msg_id){
  if(isNaN(msg_id))
    return;
  try{
    if(MessageQueue.messages.length > msg_id)
      if(MessageQueue.messages[msg_id] != null){
        MessageQueue.messages[msg_id].request.abort();
        MessageQueue.remove(msg_id);
      }
  } catch(e){Engine.reportException(msg_id, e);}
}
function MessageQueue(){
}
MessageQueue.messages = new Array();
MessageQueue.add = function (msg){
  try{
    var wrapper = new MessageWrapper();
    wrapper.wrap(msg);
    MessageQueue.messages.push(wrapper);
    return wrapper;
  } catch(e){Engine.reportException(MessageQueue.messages.length, e);}
}
MessageQueue.remove = function(msg_id){
  if(isNaN(msg_id))
    return;
  if(MessageQueue.messages.length > msg_id){
    MessageQueue.messages[msg_id] = null;
  }
}
MessageQueue.isEmpty = function(){
  var empty = true;
  for(var i = 0; i < MessageQueue.messages.length; i++) {
    if(MessageQueue.messages[i] != null){
      empty = false;
      break;
    }
  }
  if(empty)
    MessageQueue.messages = new Array();
  return empty;
}
function MessageWrapper(){
}
MessageWrapper.prototype.buildRequest = function (){
  try{
    var obj = (typeof XMLHttpRequest != "undefined") ? new XMLHttpRequest() :
      this.buildActiveX(["Microsoft.XMLHTTP", "Msxml2.XMLHTTP"]);
    return obj;
  } catch(e){Engine.reportException(null, e);}
}
MessageWrapper.prototype.buildActiveX = function (names){
    var obj = null;
    for(var i = 0; i < names.length; i++) {
      try {
        obj = new ActiveXObject(names[i]);
        break;
      } catch (e) {}
    }
    return obj;
}
MessageWrapper.prototype.loadFile = function (url){
  try{
    var req = this.buildRequest();
    req.open("GET", url, false);
    req.send('');
    return req.responseXML;
  } catch(e){Engine.reportException(null, e);}
}
MessageWrapper.prototype.transform = function (origin, style){
  try{
    var proc;
    if (typeof XSLTProcessor != "undefined"){
      proc = new XSLTProcessor();
      proc.importStylesheet(style);
      return (new XMLSerializer()).serializeToString(proc.transformToDocument(origin));
    }
    else{
      proc = this.buildActiveX(["Microsoft.XMLDOM", "MSXML2.DOMDocument", "MSXML.DOMDocument"]);
      proc.async = "false";
      proc.load(origin);
      return proc.transformNode(style);
    }
  } catch(e){Engine.reportException(null, e);}
}
MessageWrapper.prototype.wrap = function(msg){
  try{
    if(Engine.HTTP_METHODS.toString().indexOf(msg.method.toUpperCase()) == -1)
      msg.method = "POST";
    if(msg.xslt != null)
      this.style = this.loadFile(msg.xslt);
    this.id = MessageQueue.messages.length;
    this.consumer = msg.consumer;
    this.consumerObject = msg.consumerObject;
    this.refresh = msg.refresh;
    this.document = msg.document;
    this.address = msg.address;
    this.request = this.buildRequest();
    this.request.open(msg.method, msg.address);
    this.onError = msg.onError;
    this.onComplete = msg.onComplete;
    if(msg.onChange != null)
      this.request.onreadystatechange = msg.onChange;
    else{
      var _this = this;
      var args = [this];
      this.request.onreadystatechange = function() {
            _this.onChange.apply(args[0], args);
          }
    }
  } catch(e){Engine.reportException(null, e);}
}
MessageWrapper.prototype.onChange = function(){
  try{
    if(this.request.readyState == 4){
      var s = this.parseStatus(this.request.status) + ": " + this.address;
      Console.trace(s, Console.RESPONSE);
      if(this.onComplete != null) {
        this.onComplete(this.request.status, this.consumer, this.request, this.consumerObject);
		}
      if(this.request.status >= 200 && this.request.status <= 299 && this.consumer != null){
        var iterator = new DomIterator(this.document);
        if(this.style != null) {
          iterator.applyValue(this.consumer, this.transform(this.request.responseXML, this.style), this.refresh);
		  }
        else {
          iterator.applyValue(this.consumer, this.request.responseText, this.refresh);
		  }
      }
      MessageQueue.remove(this.id);
    }
  } catch(e){
     Engine.reportException(null, e);
  }
}
MessageWrapper.prototype.parseStatus = function(status){
  try{
    var str = "HTTP status " + status;
    for(var i = 0; i < Engine.HTTP_STATUS_CODES.length; ++i){
      if(Engine.HTTP_STATUS_CODES[i].indexOf(status) != -1){
        str = Engine.HTTP_STATUS_CODES[i];
        break;
      }
    }
    return str;
  } catch(e){Engine.reportException(null, e);}
}
function DomIterator(doc){
    this.doc = doc;
}
DomIterator.prototype.applyValue = function(id, value, replaceOld){
  try{
    var el = this.doc.getElementById(id);
    var iframes = this.doc.getElementsByTagName("iframe");
    for(var i = 0; i <= iframes.length; ++i){
      if(iframes[i] != null) {
          if(iframes[i].id == el.id){
              el.contentWindow.document.body.innerHTML = (replaceOld) ? value : el.contentWindow.document.body.innerHTML + value;
            return;
        }
      }
    }
    if(el.value != null){
       el.value = (replaceOld) ? value : el.value + value;
       return;
    }
    if(el.innerHTML != null){
       el.innerHTML = (replaceOld) ? value : el.innerHTML + value;
       return;
    }
  } catch(e){Engine.reportException(null, e);}
}
function ParserTool(){
}
ParserTool.formToUrl = function(form){
  var url = "";
  try{
    for(var i = 0; i < form.elements.length; ++i){
      if(form.elements[i].type)
        switch(form.elements[i].type.toLowerCase()){
             case "button": break;
          case "reset": break;
          case "radio":
            if(form.elements[i].checked)
             url += form.elements[i].name + "=" + encodeURI(form.elements[i].value) + "&";
             break;
          case "checkbox":
            if(form.elements[i].checked)
             url += form.elements[i].name + "=" + encodeURI(form.elements[i].value) + "&";
             break;
          case "select-one":
            url += form.elements[i].name + "=" + encodeURI(form.elements[i].options[form.elements[i].selectedIndex].value) + "&";
            break;
          case "select-multiple":
            for(var v = 0; v < form.elements[i].options.length; ++v){
              if(form.elements[i].options[v].selected)
                url += form.elements[i].name + "=" + encodeURI(form.elements[i].options[v].value) + "&";
            }
            break;
          default:
            url += form.elements[i].name + "=" + encodeURI(form.elements[i].value) + "&";
            break;
        }
    }
    url = url.substr(0,(url.length - 1));
    return url;
  } catch(e){Engine.reportException(null, e);}
}
ParserTool.jsToHtml = function(value, id){
  try{
    var txt = (id) ? "<div class='hide' id='" + id + "'>" : "</div>";
    if(value instanceof Object)
      for(i in value){
        txt += "<p><b>" + i + "</b> = " + value[i] + "</p>";
      }
    else
      txt += "<p>" + value + "</p>";
    return txt += "</div>" ;
  } catch(e){Engine.reportException(null, e);}
}
function Console(){
}
Console.TEMPLATE_FILE = "clean-console.html";
Console.counter = 1;
Console.window = null;
Console.REQUEST = "request", Console.RESPONSE = "response", Console.EXCEPTION = "exception";
Console.start = function(){
  try{
    var opener = document.createElement("div");
    opener.align = "right";
    opener.style.width = "100%";
    opener.style.height = "30px";
    opener.innerHTML = "<a style='color:#000000;' href='javascript:Console.open()'>Clean AJAX Engine Console</a>&nbsp;&nbsp;";
    document.body.insertBefore(opener, document.body.firstChild);
  } catch(e){Engine.reportException(null, e);}
}
Console.open = function(){
  try{
    if(!Console.isOpen())
      Console.window = window.open(Console.TEMPLATE_FILE, "console", "height=350,width=450,scrollbars");
    Console.window.focus();
  } catch(e){Engine.reportException(null, e);}
}
Console.isOpen = function(){
  if(Console.window == null)
    return false;
  else
    return (!(Console.window.closed) && (Console.window.document != null));
}
Console.trace = function(value, status){
  try{
    if(Console.isOpen()){
      var stack = ParserTool.jsToHtml(Console.counter, null);
      var title = "<a href='javascript:expand(" + Console.counter + ")'>" + status.toUpperCase() + "</a>";
      var data = ParserTool.jsToHtml(value, Console.counter);
      ++Console.counter;
      var table = Console.window.document.getElementById("trace_table");
      var row = table.insertRow(-1);
      row.className = status;
      var cell_1 = row.insertCell(-1);
      var cell_2 = row.insertCell(-1);
      cell_1.vAlign = "top";
      cell_2.vAlign = "top";
      cell_1.innerHTML = stack;
      cell_2.innerHTML = title + data;
    }
  } catch(e){Engine.reportException(null, e);}
}
function cleanGetUrl(p_url, p_elementId, p_onCompleteCallback, p_consumerObject) {
   var message = new Message();
	message.method = "GET";
	message.address = p_url;
	message.consumer = p_elementId;
	message.onComplete = p_onCompleteCallback;
	message.consumerObject = p_consumerObject;
	Connection.sendMessage(message);
}
function cleanPostForm(p_url, p_form, p_elementId, p_onCompleteCallback, p_consumerObject) {
   var message = new Message();
	message.address = p_url;
	message.consumer = p_elementId;
	message.onComplete = p_onCompleteCallback;
	message.consumerObject = p_consumerObject;
   Connection.sendFormByMessage(message, p_form);
}
/*
cleanStartUp = function() {
  clean = (document.body) 
        ? new Engine(false) 
		  : setTimeout(cleanStartUp, 10000);
}
cleanStartUp();
*/

cleanStartUp = function() {
	new Engine(false);
}
//:~