22 lines
635 B
TypeScript
22 lines
635 B
TypeScript
|
import {RouteHandler} from './route_handler';
|
||
|
|
import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
|
||
|
|
import {isPresent, Type} from 'angular2/src/facade/lang';
|
||
|
|
|
||
|
|
export class AsyncRouteHandler implements RouteHandler {
|
||
|
|
_resolvedComponent: Promise<any> = null;
|
||
|
|
componentType: Type;
|
||
|
|
|
||
|
|
constructor(private _loader: Function) {}
|
||
|
|
|
||
|
|
resolveComponentType(): Promise<any> {
|
||
|
|
if (isPresent(this._resolvedComponent)) {
|
||
|
|
return this._resolvedComponent;
|
||
|
|
}
|
||
|
|
|
||
|
|
return this._resolvedComponent = this._loader().then((componentType) => {
|
||
|
|
this.componentType = componentType;
|
||
|
|
return componentType;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|