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0
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1 define([
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2 "../declare",
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3 "../safe",
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4 "../UUID",
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5 "dojo/Deferred",
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6 "./ActivationContext",
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7 "./Descriptor",
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8 "./ValueDescriptor",
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9 "./ReferenceDescriptor",
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10 "./ServiceDescriptor",
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11 "./ActivationError"
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12 ], function (
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13 declare,
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14 array,
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15 safe,
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16 UUID,
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17 Deferred,
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18 ActivationContext,
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19 Descriptor,
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20 Value,
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21 Reference,
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22 Service,
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23 ActivationError) {
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24 var Container = declare(null, {
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25 _services: null,
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26 _cache: null,
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27 _cleanup: null,
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28 _root: null,
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29 _parent: null,
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30
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31 constructor: function (parent) {
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32 this._parent = parent;
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33 this._services = parent ? safe.create(parent._services) : {};
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34 this._cache = {};
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35 this._cleanup = [];
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36 this._root = parent ? parent.getRootContainer() : this;
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37 this._services.container = new Value(this, true);
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38 },
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39
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40 getRootContainer: function () {
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41 return this._root;
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42 },
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43
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44 getParent: function () {
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45 return this._parent;
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46 },
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47
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48 getService: function (name, def) {
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49 var d = this._services[name];
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50 if (!d)
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51 if (arguments.length > 1)
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52 return def;
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53 else
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54 throw new Error("Service '" + name + "' isn't found");
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55 if (d.isInstanceCreated())
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56 return d.getInstance();
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57
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58 var context = new ActivationContext(this, this._services);
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59
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60 try {
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61 return d.activate(context, name);
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62 } catch (error) {
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63 throw new ActivationError(name, context.getStack(), error);
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64 }
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65 },
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66
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67 register: function (name, service) {
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68 if (arguments.length == 1) {
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69 var data = name;
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70 for (name in data)
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71 this.register(name, data[name]);
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72 } else {
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73 if (!(service instanceof Descriptor))
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74 service = new Value(service, true);
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75 this._services[name] = service;
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76 }
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77 return this;
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78 },
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79
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80 onDispose: function (callback) {
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81 if (!(callback instanceof Function))
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82 throw new Error("The callback must be a function");
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83 this._cleanup.push(callback);
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84 },
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85
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86 dispose: function () {
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87 if (this._cleanup) {
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88 for (var i = 0; i < this._cleanup.length; i++)
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89 this._cleanup[i].call(null);
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90 this._cleanup = null;
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91 }
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92 },
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93
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94 /**
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95 * @param{String|Object} config
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96 * The configuration of the contaier. Can be either a string or an object,
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97 * if the configuration is an object it's treated as a collection of
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98 * services which will be registed in the contaier.
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99 *
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100 * @param{Function} opts.contextRequire
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101 * The function which will be used to load a configuration or types for services.
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102 *
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103 */
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104 configure: function (config, opts) {
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105 var p, me = this,
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106 contextRequire = (opts && opts.contextRequire);
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107
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108 if (typeof (config) === "string") {
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109 p = new Deferred();
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110 if (!contextRequire) {
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111 var shim = config + "-" + UUID();
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112 define(shim, ["require", config], function (ctx, data) {
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113 p.resolve([data, {
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114 contextRequire: ctx
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115 }]);
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116 });
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117 require([shim]);
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118 } else {
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119 // TODO how to get correct contextRequire for the relative config module?
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120 contextRequire([config], function (data) {
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121 p.resolve([data, {
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122 contextRequire: contextRequire
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123 }]);
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124 });
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125 }
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126
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127 return p.then(function (args) {
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128 return me._configure.apply(me, args);
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129 });
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130 } else {
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131 return me._configure(config, opts);
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132 }
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133 },
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134
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135 createChildContainer: function () {
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136 return new Container(this);
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137 },
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138
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139 has: function (id) {
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140 return id in this._cache;
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141 },
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142
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143 get: function (id) {
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144 return this._cache[id];
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145 },
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146
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147 store: function (id, value) {
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148 return (this._cache[id] = value);
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149 },
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150
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151 _configure: function (data, opts) {
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152 var typemap = {},
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153 d = new Deferred(),
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154 me = this,
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155 p,
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156 contextRequire = (opts && opts.contextRequire) || require;
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157
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158 var services = {};
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159
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160 for (p in data) {
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161 var service = me._parse(data[p], typemap);
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162 if (!(service instanceof Descriptor))
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163 service = new Value(service, false);
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164 services[p] = service;
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165 }
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166
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167 me.register(services);
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168
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169 var names = [];
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170
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171 for (p in typemap)
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172 names.push(p);
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173
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174 if (names.length) {
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175 contextRequire(names, function () {
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176 for (var i = 0; i < names.length; i++)
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177 typemap[names[i]] = arguments[i];
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178 d.resolve(me);
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179 });
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180 } else {
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181 d.resolve(me);
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182 }
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183 return d.promise;
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184 },
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185
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186 _parse: function (data, typemap) {
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187 if (safe.isPrimitive(data) || data instanceof Descriptor)
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188 return data;
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189 if (data.$dependency)
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190 return new Reference(
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191 data.$dependency,
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192 data.lazy,
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193 data.optional,
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194 data["default"],
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195 data.services && this._parseObject(data.services, typemap));
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196 if (data.$value) {
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197 var raw = !data.parse;
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198 return new Value(raw ? data.$value : this._parse(
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199 data.$value,
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200 typemap), raw);
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201 }
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202 if (data.$type || data.$factory)
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203 return this._parseService(data, typemap);
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204 if (data instanceof Array)
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205 return this._parseArray(data, typemap);
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206
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207 return this._parseObject(data, typemap);
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208 },
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209
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210 _parseService: function (data, typemap) {
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211 var me = this,
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212 opts = {
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213 owner: this
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214 };
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215 if (data.$type) {
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216
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217 opts.type = data.$type;
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218
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219 if (typeof (data.$type) === "string") {
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220 typemap[data.$type] = null;
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221 opts.typeMap = typemap;
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222 }
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223 }
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224
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225 if (data.$factory)
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226 opts.factory = data.$factory;
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227
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228 if (data.services)
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229 opts.services = me._parseObject(data.services, typemap);
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230 if (data.inject)
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231 opts.inject = data.inject instanceof Array ? array.map(
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232 data.inject,
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233 function (x) {
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234 return me._parseObject(x, typemap);
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235 }) : me._parseObject(data.inject, typemap);
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236 if (data.params)
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237 opts.params = me._parse(data.params, typemap);
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238
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239 if (data.activation) {
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240 if (typeof (data.activation) === "string") {
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241 switch (data.activation.toLowerCase()) {
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242 case "singleton":
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243 opts.activation = Service.SINGLETON;
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244 break;
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245 case "container":
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246 opts.activation = Service.CONTAINER;
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247 break;
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248 case "hierarchy":
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249 opts.activation = Service.HIERARCHY;
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250 break;
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251 case "context":
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252 opts.activation = Service.CONTEXT;
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253 break;
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254 case "call":
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255 opts.activation = Service.CALL;
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256 break;
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257 default:
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258 throw new Error("Unknown activation type: " +
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259 data.activation);
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260 }
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261 } else {
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262 opts.activation = Number(data.activation);
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263 }
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264 }
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265
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266 if (data.cleanup)
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267 opts.cleanup = data.cleanup;
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268
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269 return new Service(opts);
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270 },
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271
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272 _parseObject: function (data, typemap) {
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273 if (data.constructor &&
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274 data.constructor.prototype !== Object.prototype)
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275 return new Value(data, true);
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276
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277 var o = {};
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278
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279 for (var p in data)
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280 o[p] = this._parse(data[p], typemap);
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281
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282 return o;
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283 },
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284
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285 _parseArray: function (data, typemap) {
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286 if (data.constructor &&
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287 data.constructor.prototype !== Array.prototype)
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288 return new Value(data, true);
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289
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290 var me = this;
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291 return array.map(data, function (x) {
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292 return me._parse(x, typemap);
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293 });
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294 }
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295
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296 });
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297
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298 return Container;
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299 }); |
