/*
 * jQuery Impromptu
 * By:Trent Richardson [http://trentrichardson.com]
 * Version 3.0
 * Last Modified:2/15/2010
 * 
 * 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);
		$.prompt.currentPrefix=options.prefix;
		var ie6=($.browser.msie&&$.browser.version<7);
		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">';
		msgbox+='<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){
				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()];
				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; // MSIE or Firefox?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:{Okay:true},
	 	loaded:function(){},
	  	submit:function(){return true},
	 	callback:function(){},
		opacity:0.5,
	 	zIndex:999,
	  	overlayspeed:'fast',
	   	promptspeed:'fast',
   		show:'fadeIn',
	   	focus:0,
	   	useiframe:false,
	 	top:'15%',
	  	persistent:true,
	  	timeout:0,
	  	state:{html:'',buttons:{Okay: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){
		$('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
		$('#'+$.prompt.currentPrefix+'_state_'+state).slideDown('slow',function(){$(this).find('.'+$.prompt.currentPrefix+'defaultbutton').focus()})
	};
	$.prompt.nextState=function(){
		var $next=$('.'+$.prompt.currentPrefix+'_state:visible').next();
		$('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
		$next.slideDown('slow',function(){$next.find('.'+$.prompt.currentPrefix+'defaultbutton').focus()})
	};
	$.prompt.prevState=function(){
		var $next=$('.'+$.prompt.currentPrefix+'_state:visible').prev();
		$('.'+$.prompt.currentPrefix+'_state').slideUp('slow');
		$next.slideDown('slow',function(){$next.find('.'+$.prompt.currentPrefix+'defaultbutton').focus()});
	};
	$.prompt.close=function(){$('#'+$.prompt.currentPrefix+'box').fadeOut('fast',function(){$(this).remove()})};
	$.fn.prompt=function(options){
		if(options==undefined)options={};
		if(options.withDataAndEvents==undefined)options.withDataAndEvents=false;
		$.prompt($(this).clone(withDataAndEvents).html(),options)
	}
})(jQuery);