55 lines
2.3 KiB
TypeScript
55 lines
2.3 KiB
TypeScript
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import {provide, ReflectiveInjector, ComponentResolver} from 'angular2/core';
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import {RouterOutlet} from './directives/router_outlet';
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import {Type, isBlank, isPresent} from 'angular2/src/facade/lang';
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import {RouterUrlParser} from './router_url_parser';
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import {recognize} from './recognize';
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import {equalSegments, routeSegmentComponentFactory, RouteSegment, Tree} from './segments';
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import {hasLifecycleHook} from './lifecycle_reflector';
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export class RouterOutletMap {
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/** @internal */
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_outlets: {[name: string]: RouterOutlet} = {};
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registerOutlet(name: string, outlet: RouterOutlet): void { this._outlets[name] = outlet; }
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}
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export class Router {
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private prevTree: Tree<RouteSegment>;
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constructor(private _componentType: Type, private _componentResolver: ComponentResolver,
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private _urlParser: RouterUrlParser, private _routerOutletMap: RouterOutletMap) {}
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navigateByUrl(url: string): Promise<void> {
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let urlSegmentTree = this._urlParser.parse(url.substring(1));
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return recognize(this._componentResolver, this._componentType, urlSegmentTree)
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.then(currTree => {
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let prevRoot = isPresent(this.prevTree) ? this.prevTree.root : null;
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_loadSegments(currTree, currTree.root, this.prevTree, prevRoot, this,
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this._routerOutletMap);
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this.prevTree = currTree;
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});
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}
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}
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function _loadSegments(currTree: Tree<RouteSegment>, curr: RouteSegment,
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prevTree: Tree<RouteSegment>, prev: RouteSegment, router: Router,
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parentOutletMap: RouterOutletMap): void {
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let outlet = parentOutletMap._outlets[curr.outlet];
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let outletMap;
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if (equalSegments(curr, prev)) {
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outletMap = outlet.outletMap;
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} else {
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outletMap = new RouterOutletMap();
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let resolved = ReflectiveInjector.resolve(
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[provide(RouterOutletMap, {useValue: outletMap}), provide(RouteSegment, {useValue: curr})]);
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let ref = outlet.load(routeSegmentComponentFactory(curr), resolved, outletMap);
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if (hasLifecycleHook("routerOnActivate", ref.instance)) {
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ref.instance.routerOnActivate(curr, prev, currTree, prevTree);
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}
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}
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if (isPresent(currTree.firstChild(curr))) {
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let cc = currTree.firstChild(curr);
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let pc = isBlank(prevTree) ? null : prevTree.firstChild(prev);
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_loadSegments(currTree, cc, prevTree, pc, router, outletMap);
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}
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}
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