/*
 * jQuery Impromptu
 * By: Trent Richardson [http://trentrichardson.com]
 * Version 3.1
 * Last Modified: 3/30/2010
 * 
 * Copyright 2010 Trent Richardson
 * Dual licensed under the MIT and GPL licenses.
 * http://trentrichardson.com/Impromptu/GPL-LICENSE.txt
 * http://trentrichardson.com/Impromptu/MIT-LICENSE.txt
 * 
 */
(function($){
  $.prompt=function(message,options){
    options=$.extend({},$.prompt.defaults,options);
    $.prompt.currentPrefix=options.prefix;
    var ie6=false;
    var $body=$(document.body);
    var $window=$(window);
    options.classes=$.trim(options.classes);
    if(options.classes!='')options.classes=' '+options.classes;
    var msgbox='<div class="'+options.prefix+'box'+options.classes+'" id="'+options.prefix+'box">';
    if(options.useiframe&&(($('object, applet').length>0)||ie6)){
      msgbox+='<iframe src="javascript:false;" style="display:block;position:absolute;z-index:-1;" class="'+options.prefix+'fade" id="'+options.prefix+'fade"></iframe>';
    }else{
      if(ie6){
        $('select').css('visibility','hidden');
      }
      msgbox+='<div class="'+options.prefix+'fade" id="'+options.prefix+'fade"></div>';
    }
    msgbox+='<div class="'+options.prefix+'" id="'+options.prefix+'"><div class="'+options.prefix+'container"><div class="';
    msgbox+=options.prefix+'close">X</div><div id="'+options.prefix+'states"></div>';
    msgbox+='</div></div></div>';
    var $jqib=$(msgbox).appendTo($body);
    var $jqi=$jqib.children('#'+options.prefix);
    var $jqif=$jqib.children('#'+options.prefix+'fade');
    if(message.constructor==String){
      message={
        state0:{
          html:message,
          buttons:options.buttons,
          focus:options.focus,
          submit:options.submit
          }
        };
    
}
var states="";
$.each(message,function(statename,stateobj){
  stateobj=$.extend({},$.prompt.defaults.state,stateobj);
  message[statename]=stateobj;
  states+='<div id="'+options.prefix+'_state_'+statename+'" class="'+options.prefix+'_state" style="display:none;"><div class="'+options.prefix+'message">'+stateobj.html+'</div><div class="'+options.prefix+'buttons">';
  $.each(stateobj.buttons,function(k,v){
    if(typeof v=='object')states+='<button name="'+options.prefix+'_'+statename+'_button'+v.title.replace(/[^a-z0-9]+/gi,'')+'" id="'+options.prefix+'_'+statename+'_button'+v.title.replace(/[^a-z0-9]+/gi,'')+'" value="'+v.value+'">'+v.title+'</button>';else states+='<button name="'+options.prefix+'_'+statename+'_button'+k+'" id="'+options.prefix+'_'+statename+'_button'+k+'" value="'+v+'">'+k+'</button>';
  });
  states+='</div></div>';
});
$jqi.find('#'+options.prefix+'states').html(states).children('.'+options.prefix+'_state:first').css('display','block');
  $jqi.find('.'+options.prefix+'buttons:empty').css('display','none');
  $.each(message,function(statename,stateobj){
  var $state=$jqi.find('#'+options.prefix+'_state_'+statename);
  $state.children('.'+options.prefix+'buttons').children('button').click(function(){
    var msg=$state.children('.'+options.prefix+'message');
    var clicked=stateobj.buttons[$(this).text()];
    if(clicked==undefined){
      for(var i in stateobj.buttons)if(stateobj.buttons[i].title==$(this).text())clicked=stateobj.buttons[i].value;
        }
        if(typeof clicked=='object')clicked=clicked.value;
    var forminputs={};
    
    $.each($jqi.find('#'+options.prefix+'states :input').serializeArray(),function(i,obj){
      if(forminputs[obj.name]===undefined){
        forminputs[obj.name]=obj.value;
      }else if(typeof forminputs[obj.name]==Array||typeof forminputs[obj.name]=='object'){
        forminputs[obj.name].push(obj.value);
      }else{
        forminputs[obj.name]=[forminputs[obj.name],obj.value];
      }
    });
  var close=stateobj.submit(clicked,msg,forminputs);
    if(close===undefined||close){
    removePrompt(true,clicked,msg,forminputs);
  }
  });
$state.find('.'+options.prefix+'buttons button:eq('+stateobj.focus+')').addClass(options.prefix+'defaultbutton');
  });
var ie6scroll=function(){
  $jqib.css({
    top:$window.scrollTop()
    });
};

var fadeClicked=function(){
  if(options.persistent){
    var i=0;
    $jqib.addClass(options.prefix+'warning');
    var intervalid=setInterval(function(){
      $jqib.toggleClass(options.prefix+'warning');
      if(i++>1){
        clearInterval(intervalid);
        $jqib.removeClass(options.prefix+'warning');
      }
    },100);
}else{
  removePrompt();
}
};

var keyPressEventHandler=function(e){
  var key=(window.event)?event.keyCode:e.keyCode;
  if(key==27){
    fadeClicked();
  }
  if(key==9){
    var $inputels=$(':input:enabled:visible',$jqib);
    var fwd=!e.shiftKey&&e.target==$inputels[$inputels.length-1];
    var back=e.shiftKey&&e.target==$inputels[0];
    if(fwd||back){
      setTimeout(function(){
        if(!$inputels)return;
        var el=$inputels[back===true?$inputels.length-1:0];
        if(el)el.focus();
      },10);
      return false;
    }
  }
};

var positionPrompt=function(){
  $jqib.css({
    position:(ie6)?"absolute":"fixed",
    height:$window.height(),
    width:"100%",
    top:(ie6)?$window.scrollTop():0,
    left:0,
    right:0,
    bottom:0
  });
  $jqif.css({
    position:"absolute",
    height:$window.height(),
    width:"100%",
    top:0,
    left:0,
    right:0,
    bottom:0
  });
  $jqi.css({
    position:"absolute",
    top:options.top,
    left:"50%",
    marginLeft:(($jqi.outerWidth()/2)*-1)
    });
};

var stylePrompt=function(){
  $jqif.css({
    zIndex:options.zIndex,
    display:"none",
    opacity:options.opacity
    });
  $jqi.css({
    zIndex:options.zIndex+1,
    display:"none"
  });
  $jqib.css({
    zIndex:options.zIndex
    });
};

var removePrompt=function(callCallback,clicked,msg,formvals){
  $jqi.remove();
  if(ie6){
    $body.unbind('scroll',ie6scroll);
  }
  $window.unbind('resize',positionPrompt);
  $jqif.fadeOut(options.overlayspeed,function(){
    $jqif.unbind('click',fadeClicked);
    $jqif.remove();
    if(callCallback){
      options.callback(clicked,msg,formvals);
    }
    $jqib.unbind('keypress',keyPressEventHandler);
    $jqib.remove();
    if(ie6&&!options.useiframe){
      $('select').css('visibility','visible');
    }
  });
};

positionPrompt();
stylePrompt();
if(ie6){
  $window.scroll(ie6scroll);
}
$jqif.click(fadeClicked);
$window.resize(positionPrompt);
$jqib.bind("keydown keypress",keyPressEventHandler);
$jqi.find('.'+options.prefix+'close').click(removePrompt);
$jqif.fadeIn(options.overlayspeed);
$jqi[options.show](options.promptspeed,options.loaded);
$jqi.find('#'+options.prefix+'states .'+options.prefix+'_state:first .'+options.prefix+'defaultbutton').focus();
if(options.timeout>0)setTimeout($.prompt.close,options.timeout);
return $jqib;
};

$.prompt.defaults={
  prefix:'jqi',
  classes:'',
  buttons:{
    Ok:true
  },
  loaded:function(){},
  submit:function(){
    return true;
  },
  callback:function(){},
  opacity:0.6,
  zIndex:999,
  overlayspeed:'slow',
  promptspeed:'fast',
  show:'fadeIn',
  focus:0,
  useiframe:false,
  top:"15%",
  persistent:true,
  timeout:0,
  state:{
    html:'',
    buttons:{
      Ok:true
    },
    focus:0,
    submit:function(){
      return true;
    }
  }
};

$.prompt.currentPrefix=$.prompt.defaults.prefix;
$.prompt.setDefaults=function(o){
  $.prompt.defaults=$.extend({},$.prompt.defaults,o);
};

$.prompt.setStateDefaults=function(o){
  $.prompt.defaults.state=$.extend({},$.prompt.defaults.state,o);
};

$.prompt.getStateContent=function(state){
  return $('#'+$.prompt.currentPrefix+'_state_'+state);
};

$.prompt.getCurrentState=function(){
  return $('.'+$.prompt.currentPrefix+'_state:visible');
};

$.prompt.getCurrentStateName=function(){
  var stateid=$.prompt.getCurrentState().attr('id');
  return stateid.replace($.prompt.currentPrefix+'_state_','');
};

$.prompt.goToState=function(state,callback){
  $('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
  $('#'+$.prompt.currentPrefix+'_state_'+state).slideDown('slow',function(){
    $(this).find('.'+$.prompt.currentPrefix+'defaultbutton').focus();
    if(typeof callback=='function')callback();
  });
};

$.prompt.nextState=function(callback){
  var $next=$('.'+$.prompt.currentPrefix+'_state:visible').next();
  $('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
  $next.slideDown('slow',function(){
    $next.find('.'+$.prompt.currentPrefix+'defaultbutton').focus();
    if(typeof callback=='function')callback();
  });
};

$.prompt.prevState=function(callback){
  var $next=$('.'+$.prompt.currentPrefix+'_state:visible').prev();
  $('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
  $next.slideDown('slow',function(){
    $next.find('.'+$.prompt.currentPrefix+'defaultbutton').focus();
    if(typeof callback=='function')callback();
  });
};

$.prompt.close=function(){
  $('#'+$.prompt.currentPrefix+'box').fadeOut('fast',function(){
    $(this).remove();
  });
};

$.fn.prompt=function(options){
  if(options==undefined)options={};
    
  if(options.withDataAndEvents==undefined)options.withDataAndEvents=false;
  $.prompt($(this).clone(options.withDataAndEvents).html(),options);
}
})(jQuery);