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| 1 | +(function () { |
| 2 | + 'use strict'; |
| 3 | + |
| 4 | + // Underscore's Template Module |
| 5 | + // Courtesy of underscorejs.org |
| 6 | + var _ = (function (_) { |
| 7 | + _.defaults = function (object) { |
| 8 | + if (!object) { |
| 9 | + return object; |
| 10 | + } |
| 11 | + for (var argsIndex = 1, argsLength = arguments.length; argsIndex < argsLength; argsIndex++) { |
| 12 | + var iterable = arguments[argsIndex]; |
| 13 | + if (iterable) { |
| 14 | + for (var key in iterable) { |
| 15 | + if (object[key] == null) { |
| 16 | + object[key] = iterable[key]; |
| 17 | + } |
| 18 | + } |
| 19 | + } |
| 20 | + } |
| 21 | + return object; |
| 22 | + } |
| 23 | + |
| 24 | + // By default, Underscore uses ERB-style template delimiters, change the |
| 25 | + // following template settings to use alternative delimiters. |
| 26 | + _.templateSettings = { |
| 27 | + evaluate : /<%([\s\S]+?)%>/g, |
| 28 | + interpolate : /<%=([\s\S]+?)%>/g, |
| 29 | + escape : /<%-([\s\S]+?)%>/g |
| 30 | + }; |
| 31 | + |
| 32 | + // When customizing `templateSettings`, if you don't want to define an |
| 33 | + // interpolation, evaluation or escaping regex, we need one that is |
| 34 | + // guaranteed not to match. |
| 35 | + var noMatch = /(.)^/; |
| 36 | + |
| 37 | + // Certain characters need to be escaped so that they can be put into a |
| 38 | + // string literal. |
| 39 | + var escapes = { |
| 40 | + "'": "'", |
| 41 | + '\\': '\\', |
| 42 | + '\r': 'r', |
| 43 | + '\n': 'n', |
| 44 | + '\t': 't', |
| 45 | + '\u2028': 'u2028', |
| 46 | + '\u2029': 'u2029' |
| 47 | + }; |
| 48 | + |
| 49 | + var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; |
| 50 | + |
| 51 | + // JavaScript micro-templating, similar to John Resig's implementation. |
| 52 | + // Underscore templating handles arbitrary delimiters, preserves whitespace, |
| 53 | + // and correctly escapes quotes within interpolated code. |
| 54 | + _.template = function(text, data, settings) { |
| 55 | + var render; |
| 56 | + settings = _.defaults({}, settings, _.templateSettings); |
| 57 | + |
| 58 | + // Combine delimiters into one regular expression via alternation. |
| 59 | + var matcher = new RegExp([ |
| 60 | + (settings.escape || noMatch).source, |
| 61 | + (settings.interpolate || noMatch).source, |
| 62 | + (settings.evaluate || noMatch).source |
| 63 | + ].join('|') + '|$', 'g'); |
| 64 | + |
| 65 | + // Compile the template source, escaping string literals appropriately. |
| 66 | + var index = 0; |
| 67 | + var source = "__p+='"; |
| 68 | + text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { |
| 69 | + source += text.slice(index, offset) |
| 70 | + .replace(escaper, function(match) { return '\\' + escapes[match]; }); |
| 71 | + |
| 72 | + if (escape) { |
| 73 | + source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; |
| 74 | + } |
| 75 | + if (interpolate) { |
| 76 | + source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; |
| 77 | + } |
| 78 | + if (evaluate) { |
| 79 | + source += "';\n" + evaluate + "\n__p+='"; |
| 80 | + } |
| 81 | + index = offset + match.length; |
| 82 | + return match; |
| 83 | + }); |
| 84 | + source += "';\n"; |
| 85 | + |
| 86 | + // If a variable is not specified, place data values in local scope. |
| 87 | + if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; |
| 88 | + |
| 89 | + source = "var __t,__p='',__j=Array.prototype.join," + |
| 90 | + "print=function(){__p+=__j.call(arguments,'');};\n" + |
| 91 | + source + "return __p;\n"; |
| 92 | + |
| 93 | + try { |
| 94 | + render = new Function(settings.variable || 'obj', '_', source); |
| 95 | + } catch (e) { |
| 96 | + e.source = source; |
| 97 | + throw e; |
| 98 | + } |
| 99 | + |
| 100 | + if (data) return render(data, _); |
| 101 | + var template = function(data) { |
| 102 | + return render.call(this, data, _); |
| 103 | + }; |
| 104 | + |
| 105 | + // Provide the compiled function source as a convenience for precompilation. |
| 106 | + template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; |
| 107 | + |
| 108 | + return template; |
| 109 | + }; |
| 110 | + |
| 111 | + return _; |
| 112 | + })({}); |
| 113 | + |
| 114 | + if (location.hostname === 'todomvc.com') { |
| 115 | + window._gaq = [['_setAccount','UA-31081062-1'],['_trackPageview']];(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';s.parentNode.insertBefore(g,s)}(document,'script')); |
| 116 | + } |
| 117 | + |
| 118 | + function redirect() { |
| 119 | + if (location.hostname === 'tastejs.github.io') { |
| 120 | + location.href = location.href.replace('tastejs.github.io/todomvc', 'todomvc.com'); |
| 121 | + } |
| 122 | + } |
| 123 | + |
| 124 | + function findRoot() { |
| 125 | + var base; |
| 126 | + |
| 127 | + [/labs/, /\w*-examples/].forEach(function (href) { |
| 128 | + var match = location.href.match(href); |
| 129 | + |
| 130 | + if (!base && match) { |
| 131 | + base = location.href.indexOf(match); |
| 132 | + } |
| 133 | + }); |
| 134 | + |
| 135 | + return location.href.substr(0, base); |
| 136 | + } |
| 137 | + |
| 138 | + function getFile(file, callback) { |
| 139 | + if (!location.host) { |
| 140 | + return console.info('Miss the info bar? Run TodoMVC from a server to avoid a cross-origin error.'); |
| 141 | + } |
| 142 | + |
| 143 | + var xhr = new XMLHttpRequest(); |
| 144 | + |
| 145 | + xhr.open('GET', findRoot() + file, true); |
| 146 | + xhr.send(); |
| 147 | + |
| 148 | + xhr.onload = function () { |
| 149 | + if (xhr.status === 200 && callback) { |
| 150 | + callback(xhr.responseText); |
| 151 | + } |
| 152 | + }; |
| 153 | + } |
| 154 | + |
| 155 | + function Learn(learnJSON, config) { |
| 156 | + if (!(this instanceof Learn)) { |
| 157 | + return new Learn(learnJSON, config); |
| 158 | + } |
| 159 | + |
| 160 | + var template, framework; |
| 161 | + |
| 162 | + if (typeof learnJSON !== 'object') { |
| 163 | + try { |
| 164 | + learnJSON = JSON.parse(learnJSON); |
| 165 | + } catch (e) { |
| 166 | + return; |
| 167 | + } |
| 168 | + } |
| 169 | + |
| 170 | + if (config) { |
| 171 | + template = config.template; |
| 172 | + framework = config.framework; |
| 173 | + } |
| 174 | + |
| 175 | + if (!template && learnJSON.templates) { |
| 176 | + template = learnJSON.templates.todomvc; |
| 177 | + } |
| 178 | + |
| 179 | + if (!framework && document.querySelector('[data-framework]')) { |
| 180 | + framework = document.querySelector('[data-framework]').getAttribute('data-framework'); |
| 181 | + } |
| 182 | + |
| 183 | + |
| 184 | + if (template && learnJSON[framework]) { |
| 185 | + this.frameworkJSON = learnJSON[framework]; |
| 186 | + this.template = template; |
| 187 | + |
| 188 | + this.append(); |
| 189 | + } |
| 190 | + } |
| 191 | + |
| 192 | + Learn.prototype.append = function () { |
| 193 | + var aside = document.createElement('aside'); |
| 194 | + aside.innerHTML = _.template(this.template, this.frameworkJSON); |
| 195 | + aside.className = 'learn'; |
| 196 | + |
| 197 | + // Localize demo links |
| 198 | + var demoLinks = aside.querySelectorAll('.demo-link'); |
| 199 | + Array.prototype.forEach.call(demoLinks, function (demoLink) { |
| 200 | + demoLink.setAttribute('href', findRoot() + demoLink.getAttribute('href')); |
| 201 | + }); |
| 202 | + |
| 203 | + document.body.className = (document.body.className + ' learn-bar').trim(); |
| 204 | + document.body.insertAdjacentHTML('afterBegin', aside.outerHTML); |
| 205 | + }; |
| 206 | + |
| 207 | + redirect(); |
| 208 | + getFile('learn.json', Learn); |
| 209 | +})(); |
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