// Copyright (c) 2008 Andris Valums, http://valums.com
// Licensed under the MIT license (http://valums.com/mit-license/)
(function(C){if(!C){return }C.ajax_upload=function(E,D){E=C(E);if(E.size()!=1){console.error("You passed ",E.size()," elements to ajax_upload at once");return false}return new A(E,D)};var B=function(){var D=0;return function(){return D++}}();var A=function(E,D){this.button=E;this.wrapper=null;this.form=null;this.input=null;this.iframe=null;this.disabled=false;this.submitting=false;this.settings={action:"upload.php",name:"userfile",data:{},onSubmit:function(F,G){},onComplete:function(G,F){},onSuccess:function(F){},onError:function(G,F){}};C.extend(this.settings,D);this.create_wrapper();this.create_input();if(jQuery.browser.msie){this.make_parent_opaque()}this.create_iframe()};A.prototype={set_data:function(D){this.settings.data=D},disable:function(){this.disabled=true;if(!this.submitting){this.input.attr("disabled",true)}},enable:function(){this.disabled=false;this.input.attr("disabled",false)},create_wrapper:function(){var E=this.button,F;F=this.wrapper=C("<div></div>").insertAfter(E).append(E);setTimeout(function(){F.css({position:"relative",display:"block",overflow:"hidden",height:E.outerHeight(true),width:E.outerWidth(true)})},1);var D=this;F.mousemove(function(G){if(!D.input){return }D.input.css({top:G.pageY-F.offset().top-5+"px",left:G.pageX-F.offset().left-170+"px"})})},create_input:function(){var D=this;this.input=C('<input type="file" />').attr("name",this.settings.name).css({position:"absolute",margin:0,padding:0,width:"220px",heigth:"10px",opacity:0}).change(function(){if(C(this).val()==""){return }D.submitting=true;D.submit();D.submitting=false}).appendTo(this.wrapper).hover(function(){D.button.addClass("hover")},function(){D.button.removeClass("hover")});if(this.disabled){this.input.attr("disabled",true)}},create_iframe:function(){var D="iframe_au"+B();this.iframe=C('<iframe name="'+D+'"></iframe>').css("display","none").appendTo("body")},submit:function(){var D=this,G=this.settings;var E=this.file_from_path(this.input.val());if(G.onSubmit.call(this,E,this.get_ext(E))===false){if(D.disabled){this.input.attr("disabled",true)}return }this.create_form();this.input.appendTo(this.form);this.form.submit();this.input.remove();this.input=null;this.form.remove();this.form=null;this.submitting=false;this.create_input();var F=this.iframe;F.load(function(){var H=F.contents().find("body").html();G.onComplete.call(D,E,H);if(H=="success"){G.onSuccess.call(D,E)}else{G.onError.call(D,E,H)}setTimeout(function(){F.remove()},1)});this.create_iframe()},create_form:function(){this.form=C('<form method="post" enctype="multipart/form-data"></form>').appendTo("body").attr({action:this.settings.action,target:this.iframe.attr("name")});for(var D in this.settings.data){C('<input type="hidden" />').appendTo(this.form).attr({name:D,value:this.settings.data[D]})}},file_from_path:function(E){var D=E.lastIndexOf("\\");if(D!==-1){return E.slice(D+1)}return E},get_ext:function(E){var D=E.lastIndexOf(".");if(D!==-1){return E.slice(D+1)}return""},make_parent_opaque:function(){this.button.add(this.button.parents()).each(function(){var D=C(this).css("backgroundColor");var E=C(this).css("backgroundImage");if(D!="transparent"||E!="none"){C(this).css("opacity",1);return false}})}}})(jQuery);