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feat(injector): add support for default bindings

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This commit is contained in:
vsavkin
2014-10-10 11:36:06 -04:00
parent ee1e54cf0a
commit f524a89cb6
3 changed files with 43 additions and 5 deletions
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16
modules/di/src/injector.js
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@ -19,11 +19,12 @@ function _isWaiting(obj):boolean {
export class Injector {
constructor(bindings:List, parent:Injector = null) {
constructor(bindings:List, {parent=null, defaultBindings=false}={}) {
var flatten = _flattenBindings(bindings, MapWrapper.create());
this._bindings = this._createListOfBindings(flatten);
this._instances = this._createInstances();
this._parent = parent;
this._defaultBindings = defaultBindings;
this._asyncStrategy = new _AsyncInjectorStrategy(this);
this._syncStrategy = new _SyncInjectorStrategy(this);
@ -38,7 +39,7 @@ export class Injector {
}
createChild(bindings:List):Injector {
return new Injector(bindings, this);
return new Injector(bindings, {parent: this});
}
@ -92,8 +93,15 @@ export class Injector {
}
_getBinding(key:Key) {
if (this._bindings.length <= key.id) return null;
return ListWrapper.get(this._bindings, key.id);
var binding = this._bindings.length <= key.id ?
null :
ListWrapper.get(this._bindings, key.id);
if (isBlank(binding) && this._defaultBindings) {
return bind(key.token).toClass(key.token);
} else {
return binding;
}
}
_markAsConstructing(key:Key) {