ActivationContext.js
137 lines
| 3.6 KiB
| application/javascript
|
JavascriptLexer
cin
|
r0 | define([ | |
| "../declare", | |||
| "../safe", | |||
| "./Descriptor", | |||
| "./ValueDescriptor", | |||
| "../log/trace!" | |||
| ], function (declare, safe, Descriptor, Value, trace) { | |||
| var Context = declare(null, { | |||
| _cache: null, | |||
| _services: null, | |||
| _stack: null, | |||
| _visited: null, | |||
| container: null, | |||
| _trace: true, | |||
| constructor: function (container, services, cache, visited) { | |||
| safe.argumentNotNull(container, "container"); | |||
| safe.argumentNotNull(services, "services"); | |||
| this._visited = visited || {}; | |||
| this._stack = []; | |||
| this._cache = cache || {}; | |||
| this._services = services; | |||
| this.container = container; | |||
| }, | |||
| getService: function (name, def) { | |||
| var d = this._services[name]; | |||
| if (!d) | |||
| if (arguments.length > 1) | |||
| return def; | |||
| else | |||
| throw new Error("Service '" + name + "' not found"); | |||
| return d.activate(this, name); | |||
| }, | |||
| /** | |||
| * registers services local to the the activation context | |||
| * | |||
| * @name{string} the name of the service | |||
| * @service{string} the service descriptor to register | |||
| */ | |||
| register: function (name, service) { | |||
| safe.argumentNotEmptyString(name, "name"); | |||
| if (!(service instanceof Descriptor)) | |||
| service = new Value(service, true); | |||
| this._services[name] = service; | |||
| }, | |||
| clone: function () { | |||
| return new Context( | |||
| this.container, | |||
| Object.create(this._services), | |||
| this._cache, | |||
| this._visited | |||
| ); | |||
| }, | |||
| has: function (id) { | |||
| return id in this._cache; | |||
| }, | |||
| get: function (id) { | |||
| return this._cache[id]; | |||
| }, | |||
| store: function (id, value) { | |||
| return (this._cache[id] = value); | |||
| }, | |||
| parse: function (data, name) { | |||
| var me = this; | |||
| if (safe.isPrimitive(data)) | |||
| return data; | |||
| if (data instanceof Descriptor) { | |||
| return data.activate(this, name); | |||
| } else if (data instanceof Array) { | |||
| me.enter(name); | |||
| var v = data.map(function (x, i) { | |||
| return me.parse(x, "." + i); | |||
| }); | |||
| me.leave(); | |||
| return v; | |||
| } else { | |||
| me.enter(name); | |||
| var result = {}; | |||
| for (var p in data) | |||
| result[p] = me.parse(data[p], "." + p); | |||
| me.leave(); | |||
| return result; | |||
| } | |||
| }, | |||
| visit: function (id) { | |||
| var count = this._visited[id] || 0; | |||
| this._visited[id] = count + 1; | |||
| return count; | |||
| }, | |||
| getStack: function () { | |||
| return this._stack.slice().reverse(); | |||
| }, | |||
| enter: function (name, d, localize) { | |||
| if (this._trace) | |||
| trace.log("enter " + name + " " + (d || "") + | |||
| (localize ? " localize" : "")); | |||
| this._stack.push({ | |||
| name: name, | |||
| service: d, | |||
| scope: this._services | |||
| }); | |||
| if (localize) | |||
| this._services = Object.create(this._services); | |||
| }, | |||
| leave: function () { | |||
| var ctx = this._stack.pop(); | |||
| this._services = ctx.scope; | |||
| if (this._trace) | |||
| trace.log("leave " + ctx.name + " " + (ctx.service || "")); | |||
| } | |||
| }); | |||
| return Context; | |||
| }); |