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Filename : croppic.js
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/*
 * CROPPIC
 * dependancy: jQuery
 * author: Ognjen "Zmaj Džedaj" Božičković and Mat Steinlin
 */

(function (window, document) {

	Croppic = function (id, options) {

		var that = this;
		that.id = id;
		that.obj = $('#' + id);
		that.outputDiv = that.obj;

		// DEFAULT OPTIONS
		that.options = {
			uploadUrl:'',
			uploadData:{},
			cropUrl:'',
			cropData:{},
			outputUrlId:'',
			//styles
			imgEyecandy:true,
			imgEyecandyOpacity:0.2,
			zoomFactor:10,
			rotateFactor:5,
			doubleZoomControls:true,
			rotateControls: true,
			modal:false,
			customUploadButtonId:'',
			loaderHtml:'',
			scaleToFill: true,
			processInline: false,
			loadPicture:'',
			onReset: null,
			enableMousescroll: false, 			
			
			//callbacks
			onBeforeImgUpload: null,
			onAfterImgUpload: null,
			onImgDrag: null,
			onImgZoom: null,
			onImgRotate: null,
			onBeforeImgCrop: null,
			onAfterImgCrop: null,
			onBeforeRemoveCroppedImg: null,
			onAfterRemoveCroppedImg: null,
			onError: null,
			
		};

		// OVERWRITE DEFAULT OPTIONS
		for (i in options) that.options[i] = options[i];

		// INIT THE WHOLE DAMN THING!!!
		that.init();
		
	};

	Croppic.prototype = {
		id:'',
		imgInitW:0,
		imgInitH:0,
		imgW:0,
		imgH:0,
		objW:0,
		objH:0,
		actualRotation: 0,
		windowW:0,
		windowH:$(window).height(),
		obj:{},
		outputDiv:{},
		outputUrlObj:{},
		img:{},
		defaultImg:{},
		croppedImg:{},
		imgEyecandy:{},
		form:{},
		iframeform: {},
        iframeobj: {},
		cropControlsUpload:{},
		cropControlsCrop:{},
		cropControlZoomMuchIn:{},
		cropControlZoomMuchOut:{},
		cropControlZoomIn:{},
        cropControlZoomOut:{},
        cropControlCrop:{},
		cropControlReset:{},	
		cropControlRemoveCroppedImage:{},	
		modal:{},
		loader:{},
		
		init: function () {
			var that = this;
			
			that.objW = that.obj.width();
			that.objH = that.obj.height();
			
			// reset rotation
			that.actualRotation = 0;
			
			if( $.isEmptyObject(that.defaultImg)){ that.defaultImg = that.obj.find('img'); }
			
			that.createImgUploadControls();
			
			if( $.isEmptyObject(that.options.loadPicture)){				
				that.bindImgUploadControl();
			}else{				
				that.loadExistingImage();
			}			
			
		},
		createImgUploadControls: function(){
			var that = this;
			
			var cropControlUpload = '';
			if(that.options.customUploadButtonId ===''){ cropControlUpload = '<i class="cropControlUpload"></i>'; }
			var cropControlRemoveCroppedImage = '<i class="cropControlRemoveCroppedImage"></i>';
			
			if( $.isEmptyObject(that.croppedImg)){ cropControlRemoveCroppedImage=''; }
			if( !$.isEmptyObject(that.options.loadPicture)){ cropControlUpload='';}

			var html =    '<div class="cropControls cropControlsUpload"> ' + cropControlUpload + cropControlRemoveCroppedImage + ' </div>';
			that.outputDiv.append(html);
			
			that.cropControlsUpload = that.outputDiv.find('.cropControlsUpload');
			
			if(that.options.customUploadButtonId ===''){ that.imgUploadControl = that.outputDiv.find('.cropControlUpload'); }
			else{	that.imgUploadControl = $('#'+that.options.customUploadButtonId); that.imgUploadControl.show();	}

			if( !$.isEmptyObject(that.croppedImg)){
				that.cropControlRemoveCroppedImage = that.outputDiv.find('.cropControlRemoveCroppedImage');
			}
			
		},
		bindImgUploadControl: function(){
			
			var that = this;
			
			// CREATE UPLOAD IMG FORM
            var formHtml = '<form class="' + that.id + '_imgUploadForm" style="visibility: hidden;">  <input type="file" name="img" id="' + that.id + '_imgUploadField">  </form>';
			that.outputDiv.append(formHtml);
			that.form = that.outputDiv.find('.'+that.id+'_imgUploadForm');
			
			
			// CREATE FALLBACK IE9 IFRAME
            var fileUploadId = that.CreateFallbackIframe();
			
			that.imgUploadControl.off('click');
			that.imgUploadControl.on('click',function(){ 
				if (fileUploadId === "") {
                    that.form.find('input[type="file"]').trigger('click');
                } else {
                    //Trigger iframe file input click, otherwise access restriction error
                    that.iframeform.find('input[type="file"]').trigger('click');
                }									
			});						
			
			if( !$.isEmptyObject(that.croppedImg)){
			
				that.cropControlRemoveCroppedImage.on('click',function(){ 
					if (typeof (that.options.onBeforeRemoveCroppedImg) === typeof(Function)) {
						that.options.onBeforeRemoveCroppedImg.call(that);
					}
					
					that.croppedImg.remove();
					that.croppedImg = {};
					$(this).hide();
					
					if (typeof (that.options.onAfterRemoveCroppedImg) === typeof(Function)) {
						that.options.onAfterRemoveCroppedImg.call(that);
					}
					
					if( !$.isEmptyObject(that.defaultImg)){ 
						that.obj.append(that.defaultImg);
					}
					
					if(that.options.outputUrlId !== ''){	$('#'+that.options.outputUrlId).val('');	}
				
				});	
			
			}
											
			that.form.find('input[type="file"]').change(function(){
				
				if (that.options.onBeforeImgUpload) that.options.onBeforeImgUpload.call(that);
				
				that.showLoader();
				that.imgUploadControl.hide();
				
				if(that.options.processInline){			
					// Checking Browser Support for FileReader API
				    if (typeof FileReader == "undefined"){
						if (that.options.onError) that.options.onError.call(that,"processInline is not supported by your Browser");
						that.reset();
					}else{					
						var reader = new FileReader();					
						reader.onload = function (e) {
							var image = new Image();
							image.src = e.target.result;
							image.onload = function(){
								that.imgInitW = that.imgW = image.width;
								that.imgInitH = that.imgH = image.height;

								if(that.options.modal){	that.createModal(); }
								if( !$.isEmptyObject(that.croppedImg)){ that.croppedImg.remove(); }
								
								that.imgUrl=image.src;
								
								that.obj.append('<img src="'+image.src+'">');
								
								that.initCropper();
								that.hideLoader();
								
								if (that.options.onAfterImgUpload) that.options.onAfterImgUpload.call(that);
																					
							}
						};
						reader.readAsDataURL(that.form.find('input[type="file"]')[0].files[0]);
					}
				} else {		
									    					
					try {
						// other modern browsers
						formData = new FormData(that.form[0]);
					} catch(e) {
						// IE10 MUST have all form items appended as individual form key / value pairs
						formData = new FormData();
						formData.append('img', that.form.find("input[type=file]")[0].files[0]);
										
					}
					
					for (var key in that.options.uploadData) {
						if( that.options.uploadData.hasOwnProperty(key) ) {
							formData.append( key , that.options.uploadData[key] );	
						}
					}										
					
					$.ajax({
						url: that.options.uploadUrl,
						data: formData,
						context: document.body,
						cache: false,
						contentType: false,
						processData: false,
						type: 'POST'
					}).always(function (data) {
						that.afterUpload(data);
					});
				}
            });

        },
		loadExistingImage: function(){
			var that = this;
			
			if( $.isEmptyObject(that.croppedImg)){
				if (that.options.onBeforeImgUpload) that.options.onBeforeImgUpload.call(that);
			
				that.showLoader();
				if(that.options.modal){	that.createModal(); }
				if( !$.isEmptyObject(that.croppedImg)){ that.croppedImg.remove(); }
				
				that.imgUrl=that.options.loadPicture ;
				
				var img =$('<img src="'+ that.options.loadPicture +'">');
				that.obj.append(img);
				img.load(function() {
					that.imgInitW = that.imgW = this.width;
					that.imgInitH = that.imgH = this.height;
					that.initCropper();
					that.hideLoader();
					if (that.options.onAfterImgUpload) that.options.onAfterImgUpload.call(that);
				});	
						
			}else{					
				that.cropControlRemoveCroppedImage.on('click',function(){ 
					that.croppedImg.remove();
					$(this).hide();
					
					if( !$.isEmptyObject(that.defaultImg)){ 
						that.obj.append(that.defaultImg);
					}					
					if(that.options.outputUrlId !== ''){	$('#'+that.options.outputUrlId).val('');	}
					that.croppedImg = '';
					that.reset();
				});	
			}
			
		},
		afterUpload: function(data){
            var that = this;

           	response = typeof data =='object' ? data : jQuery.parseJSON(data);

            
            if (response.status == 'success') {

                that.imgInitW = that.imgW = response.width;
                that.imgInitH = that.imgH = response.height;

                if (that.options.modal) { that.createModal(); }
                if (!$.isEmptyObject(that.croppedImg)) { that.croppedImg.remove(); }

                that.imgUrl = response.url;

                var img = $('<img src="'+response.url+'">')

				that.obj.append(img);

				img.load(function(){
					that.initCropper();
					that.hideLoader();
					if (that.options.onAfterImgUpload) that.options.onAfterImgUpload.call(that);
				});
                                
                if (that.options.onAfterImgUpload) that.options.onAfterImgUpload.call(that);

            }

            if (response.status == 'error') {
			    alert(response.message);
                if (that.options.onError) that.options.onError.call(that,response.message);
				that.hideLoader();
				setTimeout( function(){ that.reset(); },2000)	
            }
        },
		
		createModal: function(){
			var that = this;
		
			var marginTop = that.windowH/2-that.objH/2;
			var modalHTML =  '<div id="croppicModal">'+'<div id="croppicModalObj" style="width:'+ that.objW +'px; height:'+ that.objH +'px; margin:0 auto; margin-top:'+ marginTop +'px; position: relative;"> </div>'+'</div>';

			$('body').append(modalHTML);
			
			that.modal = $('#croppicModal');
			
			that.obj = $('#croppicModalObj');
			
		},
		destroyModal: function(){
			var that = this;
			
			that.obj = that.outputDiv;
			that.modal.remove();
			that.modal = {};
		},
		initCropper: function(){
			var that = this;
			
			/*SET UP SOME VARS*/
			that.img = that.obj.find('img');
			that.img.wrap('<div class="cropImgWrapper" style="overflow:hidden; z-index:1; position:absolute; width:'+that.objW+'px; height:'+that.objH+'px;"></div>');
	
			/*INIT DRAGGING*/
			that.createCropControls();
			
			if(that.options.imgEyecandy){ that.createEyecandy(); }
			that.initDrag();
			that.initialScaleImg();
		},
		createEyecandy: function(){
			var that = this;

			that.imgEyecandy = that.img.clone();
			that.imgEyecandy.css({'z-index':'0','opacity':that.options.imgEyecandyOpacity}).appendTo(that.obj);
		},
		destroyEyecandy: function(){
			var that = this;
			that.imgEyecandy.remove();
		},
		initialScaleImg:function(){
			var that = this;
			that.zoom(-that.imgInitW);
			that.zoom(0);
			
			// Adding mousewheel zoom capabilities
			if (that.options.enableMousescroll){
				that.img.on('mousewheel', function(event) {
					event.preventDefault();
					that.zoom(that.options.zoomFactor*event.deltaY);				
				});
			}
			// initial center image
			
			that.img.css({'left': -(that.imgW -that.objW)/2, 'top': -(that.imgH -that.objH)/2, 'position':'relative'});
			if(that.options.imgEyecandy){ that.imgEyecandy.css({'left': -(that.imgW -that.objW)/2, 'top': -(that.imgH -that.objH)/2, 'position':'relative'}); }
			
		},
		
		createCropControls: function(){
			var that = this;
			
			// CREATE CONTROLS
			var cropControlZoomMuchIn =      '';
			var cropControlZoomIn =          '<i class="cropControlZoomIn"></i>';
			var cropControlZoomOut =         '<i class="cropControlZoomOut"></i>';
			var cropControlZoomMuchOut =     '';
			var cropControlRotateLeft =      '';
	        var cropControlRotateRight =     '';
	        var cropControlCrop =            '<i class="cropControlCrop"></i>';
			var cropControlReset =           '<i class="cropControlReset"></i>';
			
            var html;
            
			if(that.options.doubleZoomControls){
				cropControlZoomMuchIn = '<i class="cropControlZoomMuchIn"></i>';
				cropControlZoomMuchOut = '<i class="cropControlZoomMuchOut"></i>';
			}
			if(that.options.rotateControls){
				cropControlRotateLeft = '<i class="cropControlRotateLeft"></i>';
				cropControlRotateRight = '<i class="cropControlRotateRight"></i>';
			}
			
			html =  '<div class="cropControls cropControlsCrop">'+ cropControlZoomMuchIn + cropControlZoomIn + cropControlZoomOut + cropControlZoomMuchOut + cropControlRotateLeft + cropControlRotateRight + cropControlCrop + cropControlReset + '</div>';
						
			that.obj.append(html);
			
			that.cropControlsCrop = that.obj.find('.cropControlsCrop');

			// CACHE AND BIND CONTROLS
			if(that.options.doubleZoomControls){
				that.cropControlZoomMuchIn = that.cropControlsCrop.find('.cropControlZoomMuchIn');
				that.cropControlZoomMuchIn.on('click',function(){ that.zoom( that.options.zoomFactor*10 ); });
			
				that.cropControlZoomMuchOut = that.cropControlsCrop.find('.cropControlZoomMuchOut');
				that.cropControlZoomMuchOut.on('click',function(){ that.zoom(-that.options.zoomFactor*10); });
			}
			
			that.cropControlZoomIn = that.cropControlsCrop.find('.cropControlZoomIn');
			that.cropControlZoomIn.on('click',function(){ that.zoom(that.options.zoomFactor); });

			that.cropControlZoomOut = that.cropControlsCrop.find('.cropControlZoomOut');
			that.cropControlZoomOut.on('click',function(){ that.zoom(-that.options.zoomFactor); });		

			that.cropControlZoomIn = that.cropControlsCrop.find('.cropControlRotateLeft');
	        that.cropControlZoomIn.on('click', function() { that.rotate(-that.options.rotateFactor); });
	        
	        that.cropControlZoomOut = that.cropControlsCrop.find('.cropControlRotateRight');
	        that.cropControlZoomOut.on('click', function() { that.rotate(that.options.rotateFactor); });
	        
	        that.cropControlCrop = that.cropControlsCrop.find('.cropControlCrop');
			that.cropControlCrop.on('click',function(){ that.crop(); });

			that.cropControlReset = that.cropControlsCrop.find('.cropControlReset');
			that.cropControlReset.on('click',function(){ that.reset(); });				
			
		},
		initDrag:function(){
			var that = this;
			
			that.img.on("mousedown touchstart", function(e) {
				
				e.preventDefault(); // disable selection
				
				var pageX;
                var pageY;
                var userAgent = window.navigator.userAgent;
                if (userAgent.match(/iPad/i) || userAgent.match(/iPhone/i) || userAgent.match(/android/i) || (e.pageY && e.pageX) == undefined) {
                    pageX = e.originalEvent.touches[0].pageX;
                    pageY = e.originalEvent.touches[0].pageY;
                } else {
                    pageX = e.pageX;
                    pageY = e.pageY;
                }
				
				var z_idx = that.img.css('z-index'),
                drg_h = that.img.outerHeight(),
                drg_w = that.img.outerWidth(),
                pos_y = that.img.offset().top + drg_h - pageY,
                pos_x = that.img.offset().left + drg_w - pageX;
				
				that.img.css('z-index', 1000).on("mousemove touchmove", function(e) {
					
					var imgTop;
					var imgLeft;
					
					if (userAgent.match(/iPad/i) || userAgent.match(/iPhone/i) || userAgent.match(/android/i) || (e.pageY && e.pageX) == undefined) {
                        imgTop = e.originalEvent.touches[0].pageY + pos_y - drg_h;
                        imgLeft = e.originalEvent.touches[0].pageX + pos_x - drg_w;
                    } else {
                        imgTop = e.pageY + pos_y - drg_h;
                        imgLeft = e.pageX + pos_x - drg_w;
                    }
					
					that.img.offset({
						top:imgTop,
						left:imgLeft
					}).on("mouseup", function() {
						$(this).removeClass('draggable').css('z-index', z_idx);
					});
					
					if(that.options.imgEyecandy){ that.imgEyecandy.offset({ top:imgTop, left:imgLeft }); }
										
					if (that.objH < that.imgH) {
						if (parseInt(that.img.css('top')) > 0) { that.img.css('top', 0); if (that.options.imgEyecandy) { that.imgEyecandy.css('top', 0);}}
						var maxTop = -( that.imgH - that.objH); if (parseInt(that.img.css('top')) < maxTop) { that.img.css('top', maxTop); if (that.options.imgEyecandy) { that.imgEyecandy.css('top', maxTop); }}
					}else{
						if (parseInt(that.img.css('top')) < 0) { that.img.css('top', 0); if (that.options.imgEyecandy) { that.imgEyecandy.css('top', 0); }}
						var maxTop =  that.objH - that.imgH; if (parseInt(that.img.css('top')) > maxTop) { that.img.css('top', maxTop);if (that.options.imgEyecandy) {that.imgEyecandy.css('top', maxTop); }}
					}

					if (that.objW < that.imgW) {
						if( parseInt( that.img.css('left')) > 0 ){ that.img.css('left',0); if(that.options.imgEyecandy){ that.imgEyecandy.css('left', 0); }}
						var maxLeft = -( that.imgW-that.objW); if( parseInt( that.img.css('left')) < maxLeft){ that.img.css('left', maxLeft); if(that.options.imgEyecandy){ that.imgEyecandy.css('left', maxLeft); } }
					}else{
						if( parseInt( that.img.css('left')) < 0 ){ that.img.css('left',0); if(that.options.imgEyecandy){ that.imgEyecandy.css('left', 0); }}
						var maxLeft = ( that.objW - that.imgW); if( parseInt( that.img.css('left')) > maxLeft){ that.img.css('left', maxLeft); if(that.options.imgEyecandy){ that.imgEyecandy.css('left', maxLeft); } }
					}
					if (that.options.onImgDrag) that.options.onImgDrag.call(that);
					
				});
	
			}).on("mouseup", function() {
				that.img.off("mousemove");
			}).on("mouseout", function() {
				that.img.off("mousemove");
			});
			
		},
	    rotate: function(x) {
	        var that = this;
	        that.actualRotation += x;
	        that.img.css({
	            '-webkit-transform': 'rotate(' + that.actualRotation + 'deg)',
	            '-moz-transform': 'rotate(' + that.actualRotation + 'deg)',
	            'transform': 'rotate(' + that.actualRotation + 'deg)',
	        });
	        if(that.options.imgEyecandy) {
	            that.imgEyecandy.css({
	                '-webkit-transform': 'rotate(' + that.actualRotation + 'deg)',
	                '-moz-transform': 'rotate(' + that.actualRotation + 'deg)',
	                'transform': 'rotate(' + that.actualRotation + 'deg)',
	            });
	        }
	        if (typeof that.options.onImgRotate == 'function')
	            that.options.onImgRotate.call(that);
	    },
		zoom :function(x){
			var that = this;
			var ratio = that.imgW / that.imgH;
			var newWidth = that.imgW+x;
			var newHeight = newWidth/ratio;
			var doPositioning = true;
			
			if( newWidth < that.objW || newHeight < that.objH){
				
				if( newWidth - that.objW < newHeight - that.objH ){ 
					newWidth = that.objW;
					newHeight = newWidth/ratio;
				}else{
					newHeight = that.objH;
					newWidth = ratio * newHeight;
				}
				
				doPositioning = false;
				
			} 
			
			if(!that.options.scaleToFill && (newWidth > that.imgInitW || newHeight > that.imgInitH)){
				
				if( newWidth - that.imgInitW < newHeight - that.imgInitH ){ 
					newWidth = that.imgInitW;
					newHeight = newWidth/ratio;
				}else{
					newHeight = that.imgInitH;
					newWidth = ratio * newHeight;
				}
				
				doPositioning = false;
				
			}
			
			that.imgW = newWidth;
			that.img.width(newWidth); 
			
			that.imgH = newHeight;
			that.img.height(newHeight); 
	
			var newTop = parseInt( that.img.css('top') ) - x/2;
			var newLeft = parseInt( that.img.css('left') ) - x/2;
			
			if( newTop>0 ){ newTop=0;}
			if( newLeft>0 ){ newLeft=0;}
			
			var maxTop = -( newHeight-that.objH); if( newTop < maxTop){	newTop = maxTop;	}
			var maxLeft = -( newWidth-that.objW); if( newLeft < maxLeft){	newLeft = maxLeft;	}
			
			if( doPositioning ){
				that.img.css({'top':newTop, 'left':newLeft}); 
			}
			
			if(that.options.imgEyecandy){
				that.imgEyecandy.width(newWidth);
				that.imgEyecandy.height(newHeight);
				if( doPositioning ){
					that.imgEyecandy.css({'top':newTop, 'left':newLeft}); 
				}
			}	
			
			if (that.options.onImgZoom) that.options.onImgZoom.call(that);

		},
		crop:function(){
			var that = this;
			
			if (that.options.onBeforeImgCrop) that.options.onBeforeImgCrop.call(that);
			
			that.cropControlsCrop.hide();
			that.showLoader();
	
			var cropData = {
					imgUrl:that.imgUrl,
					imgInitW:that.imgInitW,
					imgInitH:that.imgInitH,
					imgW:that.imgW,
					imgH:that.imgH,
					imgY1:Math.abs( parseInt( that.img.css('top') ) ),
					imgX1:Math.abs( parseInt( that.img.css('left') ) ),
					cropH:that.objH,
					cropW:that.objW,
					rotation:that.actualRotation
				};
			
			var formData;
			
			if(typeof FormData == 'undefined'){
				var XHR = new XMLHttpRequest();
				var urlEncodedData = "";
				var urlEncodedDataPairs = [];
				
				for(var key in cropData) {
				  urlEncodedDataPairs.push(encodeURIComponent(key) + '=' + encodeURIComponent(cropData[key]));
				}
				for(var key in that.options.cropData) {
				  urlEncodedDataPairs.push(encodeURIComponent(key) + '=' + encodeURIComponent(that.options.cropData[key]));
				}
				urlEncodedData  = urlEncodedDataPairs.join('&').replace(/%20/g, '+');
								
				XHR.addEventListener('error', function(event) {
					if (that.options.onError) that.options.onError.call(that,"XHR Request failed");
				});
				XHR.onreadystatechange=function(){
				if (XHR.readyState==4 && XHR.status==200)
					{
						that.afterCrop(XHR.responseText);
					}
				}
				XHR.open('POST', that.options.cropUrl);

				XHR.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
				XHR.setRequestHeader('Content-Length', urlEncodedData.length);

				XHR.send(urlEncodedData);
				
			}else{
				formData = new FormData();
				for (var key in cropData) {				
					if( cropData.hasOwnProperty(key) ) {
							formData.append( key , cropData[key] );
					}
				}
				
				for (var key in that.options.cropData) {
					if( that.options.cropData.hasOwnProperty(key) ) {
							formData.append( key , that.options.cropData[key] );
					}
				}
				
				$.ajax({
					url: that.options.cropUrl,
					data: formData,
					context: document.body,
					cache: false,
					contentType: false,
					processData: false,
					type: 'POST'				
				}).always(function (data) {

					that.afterCrop(data);

				});
			}
						
			//
        },
		afterCrop: function (data) {
            var that = this;
			try {
				response = jQuery.parseJSON(data);           	
			}
			catch(err) {
				response = typeof data =='object' ? data : jQuery.parseJSON(data);           	
			}	    
           	
            if (response.status == 'success') {

                if (that.options.imgEyecandy)
					that.imgEyecandy.hide();

                that.destroy();
				
                that.obj.append('<img class="croppedImg" src="' + response.url + '">');
                if (that.options.outputUrlId !== '') { $('#' + that.options.outputUrlId).val(response.url); }

                that.croppedImg = that.obj.find('.croppedImg');

                that.init();

                that.hideLoader();
		    }
            if (response.status == 'error') {
                if (that.options.onError) that.options.onError.call(that,response.message);
				that.hideLoader();
				setTimeout( function(){ that.reset(); },2000)	
            }

            if (that.options.onAfterImgCrop) that.options.onAfterImgCrop.call(that, response);
        },
		showLoader:function(){
			var that = this;
			
			that.obj.append(that.options.loaderHtml);
			that.loader = that.obj.find('.loader');
			
		},
		hideLoader:function(){
			var that = this;
			that.loader.remove();	
		},
		reset:function(){
			var that = this;
			that.destroy();
			
			that.init();
			
			if( !$.isEmptyObject(that.croppedImg)){ 
				that.obj.append(that.croppedImg); 
				if(that.options.outputUrlId !== ''){	$('#'+that.options.outputUrlId).val(that.croppedImg.attr('url'));	}
			}
			if (typeof that.options.onReset == 'function')
                that.options.onReset.call(that);
		},
		destroy:function(){
			var that = this;
			if(that.options.modal && !$.isEmptyObject(that.modal) ){ that.destroyModal(); }
			if(that.options.imgEyecandy && !$.isEmptyObject(that.imgEyecandy) ){  that.destroyEyecandy(); }
			if( !$.isEmptyObject( that.cropControlsUpload ) ){  that.cropControlsUpload.remove(); }
			if( !$.isEmptyObject( that.cropControlsCrop ) ){   that.cropControlsCrop.remove(); }
			if( !$.isEmptyObject( that.loader ) ){   that.loader.remove(); }
			if( !$.isEmptyObject( that.form ) ){   that.form.remove(); }
			that.obj.html('');
		},
		isAjaxUploadSupported: function () {
            var input = document.createElement("input");
            input.type = "file";

            return (
                "multiple" in input &&
                    typeof File != "undefined" &&
                    typeof FormData != "undefined" &&
                    typeof (new XMLHttpRequest()).upload != "undefined");
        },
        CreateFallbackIframe: function () {
            var that = this;        
			
            if (!that.isAjaxUploadSupported()) { 

                if (jQuery.isEmptyObject(that.iframeobj)) {
                    var iframe = document.createElement("iframe");
                    iframe.setAttribute("id", that.id + "_upload_iframe");
                    iframe.setAttribute("name", that.id + "_upload_iframe");
                    iframe.setAttribute("width", "0");
                    iframe.setAttribute("height", "0");
                    iframe.setAttribute("border", "0");
                    iframe.setAttribute("src", "javascript:false;");
                    iframe.style.display = "none";
                    document.body.appendChild(iframe);
                } else {
                    iframe = that.iframeobj[0];
                }

                var myContent = '<!DOCTYPE html>'
                                + '<html><head><title>Uploading File</title></head>'
                                + '<body>'
                                + '<form '
                                + 'class="' + that.id + '_upload_iframe_form" '                               
                                + 'name="' + that.id + '_upload_iframe_form" '
                                + 'action="' + that.options.uploadUrl + '" method="post" '
                                + 'enctype="multipart/form-data" encoding="multipart/form-data" style="display:none;">'
                                + $("#" + that.id + '_imgUploadField')[0].outerHTML
                                + '</form></body></html>';

                iframe.contentWindow.document.open('text/htmlreplace');
                iframe.contentWindow.document.write(myContent);
                iframe.contentWindow.document.close();

                that.iframeobj = $("#" + that.id + "_upload_iframe");                
                that.iframeform = that.iframeobj.contents().find("html").find("." + that.id + "_upload_iframe_form");
                
                that.iframeform.on("change", "input", function () {                   
					that.SubmitFallbackIframe(that);
                });
                that.iframeform.find("input")[0].attachEvent("onchange", function () {
                    that.SubmitFallbackIframe(that);
                });
                
                var eventHandlermyFile = function () {
                    if (iframe.detachEvent)
                        iframe.detachEvent("onload", eventHandlermyFile);
                    else
                        iframe.removeEventListener("load", eventHandlermyFile, false);

                    var response = that.getIframeContentJSON(iframe);

                    if (jQuery.isEmptyObject(that.modal)) {
                        that.afterUpload(response);
                    }
                }

                if (iframe.addEventListener)
                    iframe.addEventListener("load", eventHandlermyFile, true);
                if (iframe.attachEvent)
                    iframe.attachEvent("onload", eventHandlermyFile);

                return "#" + that.id + '_imgUploadField';
                
            } else {
                return "";
            }

        },
        SubmitFallbackIframe: function (that) {           
            that.showLoader();
			if(that.options.processInline && !that.options.uploadUrl){
				if (that.options.onError){
					that.options.onError.call(that,"processInline is not supported by your browser ");
					that.hideLoader();
				}
			}else{
				if (that.options.onBeforeImgUpload) that.options.onBeforeImgUpload.call(that);			
				that.iframeform[0].submit();
			}						
        },
        getIframeContentJSON: function (iframe) {
            try {                
                var doc = iframe.contentDocument ? iframe.contentDocument : iframe.contentWindow.document,
	                response;

                var innerHTML = doc.body.innerHTML;
                if (innerHTML.slice(0, 5).toLowerCase() == "<pre>" && innerHTML.slice(-6).toLowerCase() == "</pre>") {
                    innerHTML = doc.body.firstChild.firstChild.nodeValue;
                }
                response = jQuery.parseJSON(innerHTML);
            } catch (err) {
                response = { success: false };
            }

            return response;
        }
		
	};
})(window, document);