Ext.override(Ext.data.Store, {
  setExtraParam: function (name, value){
    this.proxy.extraParams = this.proxy.extraParams || {};
    this.proxy.extraParams[name] = value;
    this.proxy.applyEncoding(this.proxy.extraParams);
  }
});

Ext.ns("Compass.ErpApp.Utility");

Compass.ErpApp.Utility.disableEnterSubmission = function(){
  $(function(){
    $("form").bind("keypress", function(e){
      if (e.keyCode == 13) return false;
    });
  });
};

Compass.ErpApp.Utility.evaluateScriptTags = function(element){
  var scriptTags = element.getElementsByTagName("script");
  for(var i=0;i<scriptTags.length;i++){
    eval(scriptTags[i].text);
  }
};

Compass.ErpApp.Utility.promptReload = function(){
  Ext.MessageBox.confirm('Confirm', 'Page must reload for changes to take affect. Reload now?', function(btn){
    if(btn == 'no'){
      return false;
    }
    else{
      window.location.reload();
    }
  });
};

Compass.ErpApp.Utility.handleFormFailure = function(action){
  switch (action.failureType) {
    case Ext.form.action.Action.CLIENT_INVALID:
      Ext.Msg.alert('Failure', 'Form fields may not be submitted with invalid values');
      break;
    case Ext.form.action.Action.CONNECT_FAILURE:
      Ext.Msg.alert('Failure', 'Ajax communication failed');
      break;
    case Ext.form.action.Action.SERVER_INVALID:
      Ext.Msg.alert('Failure', action.result.msg);
  }
};

Compass.ErpApp.Utility.roundNumber = function(num) {
  var twoDPString = "0.00";
  if(!Compass.ErpApp.Utility.isBlank(num) && !isNaN(num)){
    var dnum = Math.round(num * 100)/100;
    twoDPString = dnum + "";
    if (twoDPString.indexOf(".") == -1) {
      twoDPString += ".00"
    }
    if (twoDPString.indexOf(".") == twoDPString.length-2) {
      twoDPString += "0"
    }

  }
  return twoDPString;
};

Compass.ErpApp.Utility.numbersOnly = function(e, decimal) {
  var key;
  var keychar;

  if (window.event) {
    key = window.event.keyCode;
  }
  else if (e) {
    key = e.which;
  }
  else {
    return true;
  }
  keychar = String.fromCharCode(key);

  if ((key==null) || (key==0) || (key==8) ||  (key==9) || (key==13) || (key==27) ) {
    return true;
  }
  else if ((("0123456789").indexOf(keychar) > -1)) {
    return true;
  }
  else if (decimal && (keychar == ".")) {
    return true;
  }
  else
    return false;
};

//FIXME: This is broken; missing the Ext.ux.util.clone file
Compass.ErpApp.Utility.clone = function(o) {
  if(!o || 'object' !== typeof o) {
    return o;
  }
  if('function' === typeof o.clone) {
    return o.clone();
  }
  var c = '[object Array]' === Object.prototype.toString.call(o) ? [] : {};
  var p, v;
  for(p in o) {
    if(o.hasOwnProperty(p)) {
      v = o[p];
      if(v && 'object' === typeof v) {
        c[p] = Ext.ux.util.clone(v);
      }
      else {
        c[p] = v;
      }
    }
  }
  return c;
};

Compass.ErpApp.Utility.addCommas = function(nStr)
{
  nStr += '';
  var x = nStr.split('.');
  var x1 = x[0];
  var x2 = x.length > 1 ? '.' + x[1] : '';
  var rgx = /(\d+)(\d{3})/;
  while (rgx.test(x1)) {
    x1 = x1.replace(rgx, '$1' + ',' + '$2');
  }
  return x1 + x2;
};

Compass.ErpApp.Utility.isBlank = function(value) {
  var result = false;

  if(value === 'undefined' || value === undefined || value === null || value === '' || value === ' '){
    result = true;
  }

  return result;
};

Compass.ErpApp.Utility.removeDublicates = function(arrayName) {
  var newArray = new Array();
    label:for (var i = 0; i < arrayName.length; i++)
    {
      for (var j = 0; j < newArray.length; j++)
      {
        if (newArray[j].unit_id == arrayName[i].unit_id)
          continue label;
      }
      newArray[newArray.length] = arrayName[i];
    }
  return newArray;
};

Compass.ErpApp.Utility.isArray = function(o){
  return Object.prototype.toString.call(o) === '[object Array]';
}

Compass.ErpApp.Utility.wait = function(ms) {
  ms += new Date().getTime();
  while (new Date() < ms){}
};

Compass.ErpApp.Utility.limitTextArea = function(textArea, limit){
  var value = textArea.value;
  if(value.length > limit){
    textArea.value = value.substring(0, limit);
  }
  return true;
};

Compass.ErpApp.Utility.formatCurrency = function(num) {
  num = num.toString().replace(/\$|\,/g,'');
  if(isNaN(num))
    num = "0";
  var sign = (num == (num = Math.abs(num)));
  num = Math.floor(num*100+0.50000000001);
  var cents = num%100;
  num = Math.floor(num/100).toString();
  if(cents<10)
    cents = "0" + cents;
  for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
    num = num.substring(0,num.length-(4*i+3))+','+
    num.substring(num.length-(4*i+3));
  return (((sign)?'':'-') + '$' + num + '.' + cents);
};

Compass.ErpApp.Utility.JsLoader = {
  load : function(url, successCallback) {
    this.attempts = 0;
    this.successCallBack = successCallback;
    this.scriptsToLoad = [];

    if(!Compass.ErpApp.Utility.isArray(url)){
      url = [url];
    }

    for(var i=0; i < url.length; i++){
      this.scriptsToLoad.push({
        url:url[i],
        status:'pending'
      });
    }

    for(var t=0; t < this.scriptsToLoad.length; t++){
      this.loadScript(this.scriptsToLoad[t]);
    }
  },

  allScriptsDone : function(){
    for(var i=0; i < this.scriptsToLoad.length; i++){
      if (this.scriptsToLoad[i].status == 'pending')
        return false;
    }
    return true;
  },

  scriptDone : function(){
    if(this.allScriptsDone()){
      this.onSuccess();
    }
  },

  loadScript : function(scriptToLoad){
    var self = this;
    var ss = document.getElementsByTagName("script");
    for (i = 0;i < ss.length; i++) {
      if (ss[i].src && ss[i].src.indexOf(scriptToLoad.url) != -1)
      {
        scriptToLoad.status = 'success';
        self.scriptDone();
        return;
      }
    }
    var s = document.createElement("script");
    s.type = "text/javascript";
    s.src = scriptToLoad.url;
    var head = document.getElementsByTagName("head")[0];
    head.appendChild(s);
    s.onload = s.onreadystatechange = function()
    {
      if (this.readyState && this.readyState == "loading")
        return;
      scriptToLoad.status = 'success';
      self.scriptDone();
    }
    s.onerror = function() {
      head.removeChild(s);
      scriptToLoad.status = 'failure';
      self.scriptDone();
    }
  },

  onSuccess : function() {
    this.successCallBack();
  },
  onFailure : function() { }
};

//Javascript Extensions

//Array Extensions
Array.prototype.contains = function (element) {
  for (var i = 0; i < this.length; i++) {
    if (this[i] == element) {
      return true;
    }
  }
  return false;
};

Array.prototype.find = function (find_statement) {
  try
  {
    for (var i = 0; i < this.length; i++) {
      var statement = "this[i]." + find_statement;
      if(eval(statement)){
        return this[i];
      }
    }
  }
  catch(ex){
    return null;
  }
  return null;
};

Array.prototype.select = function (find_statement) {
  var sub_array = [];
  try
  {
    for (var i = 0; i < this.length; i++) {
      var statement = "this[i]." + find_statement;
      if(eval(statement)){
        sub_array.push(this[i]);
      }
    }
  }
  catch(ex){
    return null;
  }
  return sub_array;
};

Array.prototype.first = function(){
  if(this[0] == undefined){
    return null;
  }
  else{
    return this[0];
  }
};

Array.prototype.collect = function(item){
  var items = [];
  try
  {
    for (var i = 0; i < this.length; i++) {
      items.push(this[i][item]);
    }
  }
  catch(ex){
    return null;
  }
  return items;
};

Array.prototype.empty = function () {
  return (this.length == 0);
};

//String Extensions

String.prototype.underscore = function (){
  return this.replace(/\s/g, "_");
};

String.prototype.downcase = function (){
  return this.toLowerCase();
};