//this file hacked to be svg-edit only and work with JSONP
/*
 * SVG Icon Loader 2.0
 *
 * jQuery Plugin for loading SVG icons from a single file
 *
 * Copyright (c) 2009 Alexis Deveria
 * http://a.deveria.com
 *
 * Apache 2 License
*/


(function($) {
	var svg_icons = {};

	$.svgIcons = function(file, opts) {
		var svgns = "http://www.w3.org/2000/svg",
			xlinkns = "http://www.w3.org/1999/xlink",
			icon_w = opts.w?opts.w : 24,
			icon_h = opts.h?opts.h : 24,
			elems, svgdoc, testImg,
			icons_made = false, data_loaded = false, load_attempts = 0,
			ua = navigator.userAgent, isOpera = !!window.opera, isSafari = (ua.indexOf('Safari/') > -1 && ua.indexOf('Chrome/')==-1),
			data_pre = 'data:image/svg+xml;charset=utf-8;base64,';
			
			if(opts.svgz) {
				var data_el = $('<object data="' + file + '" type=image/svg+xml>').appendTo('body').hide();
				try {
					svgdoc = data_el[0].contentDocument;
					// TODO: IE still loads this, shouldn't even bother.
					data_el.load(getIcons);
					getIcons(0, true); // Opera will not run "load" event if file is already cached
				} catch(err1) {
					useFallback();
				}
			} else {
				$.ajax({
				
					url: "http://anti15.welfarehost.com/svgeditproxy.php?whoot=?",
					dataType: 'jsonp',
					success: function(data) {
if (window.DOMParser)
  {
  parser=new DOMParser();
  xmlDoc=parser.parseFromString(data,"text/xml");
  }
else // Internet Explorer
  {
  xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
  xmlDoc.async="false";
  xmlDoc.loadXML(data); 
  }
						svgdoc = xmlDoc;
						$(function() {
							getIcons('ajax');
						});
					},
					error: function() {
						$(function() {
							useFallback();
						});
					}
				});
			}
			
		function getIcons(evt, no_wait) {
			if(evt !== 'ajax') {
				if(data_loaded) return;
				// Webkit sometimes says svgdoc is undefined, other times
				// it fails to load all nodes. Thus we must make sure the "eof" 
				// element is loaded.
				svgdoc = data_el[0].contentDocument; // Needed again for Webkit
				var isReady = (svgdoc && svgdoc.getElementById('svg_eof'));
				if(!isReady && !(no_wait && isReady)) {
					load_attempts++;
					if(load_attempts < 50) {
						setTimeout(getIcons, 20);
					} else {
						useFallback();
						data_loaded = true;
					}
					return;
				}
				data_loaded = true;
			}
			// Clean source SVGs (mostly for Inkscape files)
			// TODO: Find a way to do this without crashing Safari (when converting to IMG)
			$(svgdoc).find('metadata').remove().end()
				.find('*').each(function(i, el) {
				if(el.nodeName.indexOf(':') != -1) {
					$(el).remove();
				}
				var attrs = $.extend(false, el.attributes, {});
				for(i in attrs) {
					var attr = attrs[i];
					var fullattr = attr.prefix?attr.prefix + ':' + attr.localName:'';
					if(attr.prefix) {
						el.removeAttribute(attr.localName); // for Opera
						el.removeAttribute(fullattr); // for Webkit
					} 
					if(fullattr == 'xlink:href') {
						el.setAttribute('xlink:href', attr.nodeValue);
					}
				}
			});
			elems = $(svgdoc.firstChild).children(); //.getElementsByTagName('foreignContent');
			var testSrc = data_pre + 'PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhlaWdodD0iMjc1Ij48L3N2Zz4%3D';
			
			testImg = $(new Image()).attr({
				src: testSrc,
				width: 0,
				height: 0
			}).appendTo('body')
			.load(function () {
				// Safari 4 crashes, Opera and Chrome don't
				makeIcons(!isSafari);
			}).error(function () {
				makeIcons();
			});
		}
		
		function makeIcons(toImage, fallback) {
			if(icons_made) return;
			if(opts.no_img) toImage = false;
			var holder;
			
			var setIcon = function(target, icon, id, setID) {
				if(isOpera) icon.css('visibility','hidden');
				if(opts.replace) {
					if(setID) icon.attr('id',id);
					var cl = target.attr('class');
					if(cl) icon.attr('class','svg_icon '+cl);
					target.replaceWith(icon);
				} else {
					
					target.append(icon);
				}
				if(isOpera) {
					setTimeout(function() {
						icon.attr('style','visibility:visible;');
					},1);
				}
			}
			
			var addIcon = function(icon, id) {
				if(opts.id_match === undefined || opts.id_match !== false) {
					setIcon(holder, icon, id, true);
				}
				svg_icons[id] = icon;
			}
			
			if(toImage) {
				var temp_holder = $(document.createElement('div'));
				temp_holder.hide().appendTo('body');
			} 
			if(fallback) {
				var path = opts.fallback_path?opts.fallback_path:'';
				$.each(fallback, function(id, imgsrc) {
					holder = $('#' + id);
					var icon = $(new Image())
						.attr({
							'class':'svg_icon',
							src: path + imgsrc,
							'width': icon_w,
							'height': icon_h,
							'alt': 'icon'
						});
					
					addIcon(icon, id);
				});
			} else {
				$.each(elems, function(i, elem) {
					var id = elem.getAttribute('id');
					if(id == 'svg_eof') return;
					holder = $('#' + id);
			
					var svg = elem.getElementsByTagNameNS(svgns, 'svg')[0];
					var svgroot = svgdoc.createElementNS(svgns, "svg");
					svgroot.setAttributeNS(svgns, 'viewBox', [0,0,icon_w,icon_h].join(' '));
					
					$(svgroot).attr({
						"xmlns": svgns,
						"width": icon_w,
						"height": icon_h,
						"xmlns:xlink": xlinkns,
						"class": 'svg_icon'
					});

					// Without cloning, Firefox will make another GET request.
					// With cloning, causes issue in Opera/Win/Non-EN
					if(!isOpera) svg = svg.cloneNode(true);
					
					svgroot.appendChild(svg);
			
					if(toImage) {
						// Without cloning, Safari will crash
						// With cloning, causes issue in Opera/Win/Non-EN
						var svgcontent = isOpera?svgroot:svgroot.cloneNode(true);
						temp_holder.empty().append(svgroot);
						var str = data_pre + encode64(temp_holder.html());
						var icon = $(new Image())
							.attr({'class':'svg_icon', src:str});
					} else {
						var icon = fixIDs($(svgroot), i);
					}
					addIcon(icon, id);
				});
			}
			
			if(opts.placement) {
				$.each(opts.placement, function(sel, id) {
					if(!svg_icons[id]) return;
					$(sel).each(function(i) {
						var copy = svg_icons[id].clone();
						if(i > 0 && !toImage) copy = fixIDs(copy, i, true);
						setIcon($(this), copy, id);
					})
				});
			}
			if(!fallback) {
				if(toImage) temp_holder.remove();
				if(data_el) data_el.remove();
				testImg.remove();
			}

			if(opts.resize) $.resizeSvgIcons(opts.resize);

			icons_made = true;
			
			if(opts.callback) opts.callback(svg_icons);
			
		}
		
		function fixIDs(svg_el, svg_num, force) {
			var defs = svg_el.find('defs');
			if(!defs.length) return svg_el;
			
			defs.find('[id]').each(function(i) {
				var id = this.id;
				var no_dupes = ($(svgdoc).find('#' + id).length <= 1);
				if(isOpera) no_dupes = false; // Opera didn't clone svg_el, so not reliable
				if(!force && no_dupes) return;
				var new_id = id + svg_num + i;
				$(this).attr('id', new_id);			
	
				svg_el.find('[fill="url(#' + id + ')"]').each(function() {
					$(this).attr('fill', 'url(#' + new_id + ')');
				}).end().find('[stroke="url(#' + id + ')"]').each(function() {
					$(this).attr('stroke', 'url(#' + new_id + ')');
				}).end().find('use').each(function() {
					if(this.getAttribute('xlink:href') == '#' + id) {
						this.setAttributeNS(xlinkns,'href','#' + new_id);
					}
				});
			});
			return svg_el;
		}
		
		function useFallback() {
			if(file.indexOf('.svgz') != -1) {
				var reg_file = file.replace('.svgz','.svg');
				if(window.console) {
					console.log('.svgz failed, trying with .svg');
				}
				$.svgIcons(reg_file, opts);
			} else if(opts.fallback) {
				makeIcons(false, opts.fallback);
			}
		}
				
		function encode64(input) {
			// base64 strings are 4/3 larger than the original string
			if(window.btoa) return window.btoa(input);
			var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
			var output = new Array( Math.floor( (input.length + 2) / 3 ) * 4 );
			var chr1, chr2, chr3;
			var enc1, enc2, enc3, enc4;
			var i = 0, p = 0;
		
			do {
				chr1 = input.charCodeAt(i++);
				chr2 = input.charCodeAt(i++);
				chr3 = input.charCodeAt(i++);
		
				enc1 = chr1 >> 2;
				enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
				enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
				enc4 = chr3 & 63;
		
				if (isNaN(chr2)) {
					enc3 = enc4 = 64;
				} else if (isNaN(chr3)) {
					enc4 = 64;
				}
		
				output[p++] = _keyStr.charAt(enc1);
				output[p++] = _keyStr.charAt(enc2);
				output[p++] = _keyStr.charAt(enc3);
				output[p++] = _keyStr.charAt(enc4);
			} while (i < input.length);
		
			return output.join('');
		}
	}
	
	$.getSvgIcon = function(id) { return svg_icons[id]; }
	
	$.resizeSvgIcons = function(obj) {
		// FF2 and older don't detect .svg_icon, so we change it detect svg elems instead
		var change_sel = !$('.svg_icon:first').length;
		$.each(obj, function(sel, size) {
			var arr = $.isArray(size);
			var w = arr?size[0]:size,
				h = arr?size[1]:size;
			if(change_sel) {
				sel = sel.replace(/\.svg_icon/g,'svg');
			}
			$(sel).each(function() {
				this.setAttribute('width', w);
				this.setAttribute('height', h);
			});
		});
	}
	
})(jQuery);