@angular/router
Version:
Angular - the routing library
181 lines (180 loc) • 20.2 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
import { Attribute, ChangeDetectorRef, ComponentFactoryResolver, Directive, EventEmitter, Output, ViewContainerRef } from '@angular/core';
import { ChildrenOutletContexts } from '../router_outlet_context';
import { ActivatedRoute } from '../router_state';
import { PRIMARY_OUTLET } from '../shared';
/**
* @description
*
* Acts as a placeholder that Angular dynamically fills based on the current router state.
*
* ```
* <router-outlet></router-outlet>
* <router-outlet name='left'></router-outlet>
* <router-outlet name='right'></router-outlet>
* ```
*
* A router outlet will emit an activate event any time a new component is being instantiated,
* and a deactivate event when it is being destroyed.
*
* ```
* <router-outlet
* (activate)='onActivate($event)'
* (deactivate)='onDeactivate($event)'></router-outlet>
* ```
* @ngModule RouterModule
*
* @publicApi
*/
var RouterOutlet = /** @class */ (function () {
function RouterOutlet(parentContexts, location, resolver, name, changeDetector) {
this.parentContexts = parentContexts;
this.location = location;
this.resolver = resolver;
this.changeDetector = changeDetector;
this.activated = null;
this._activatedRoute = null;
this.activateEvents = new EventEmitter();
this.deactivateEvents = new EventEmitter();
this.name = name || PRIMARY_OUTLET;
parentContexts.onChildOutletCreated(this.name, this);
}
RouterOutlet.prototype.ngOnDestroy = function () { this.parentContexts.onChildOutletDestroyed(this.name); };
RouterOutlet.prototype.ngOnInit = function () {
if (!this.activated) {
// If the outlet was not instantiated at the time the route got activated we need to populate
// the outlet when it is initialized (ie inside a NgIf)
var context = this.parentContexts.getContext(this.name);
if (context && context.route) {
if (context.attachRef) {
// `attachRef` is populated when there is an existing component to mount
this.attach(context.attachRef, context.route);
}
else {
// otherwise the component defined in the configuration is created
this.activateWith(context.route, context.resolver || null);
}
}
}
};
Object.defineProperty(RouterOutlet.prototype, "isActivated", {
get: function () { return !!this.activated; },
enumerable: true,
configurable: true
});
Object.defineProperty(RouterOutlet.prototype, "component", {
get: function () {
if (!this.activated)
throw new Error('Outlet is not activated');
return this.activated.instance;
},
enumerable: true,
configurable: true
});
Object.defineProperty(RouterOutlet.prototype, "activatedRoute", {
get: function () {
if (!this.activated)
throw new Error('Outlet is not activated');
return this._activatedRoute;
},
enumerable: true,
configurable: true
});
Object.defineProperty(RouterOutlet.prototype, "activatedRouteData", {
get: function () {
if (this._activatedRoute) {
return this._activatedRoute.snapshot.data;
}
return {};
},
enumerable: true,
configurable: true
});
/**
* Called when the `RouteReuseStrategy` instructs to detach the subtree
*/
RouterOutlet.prototype.detach = function () {
if (!this.activated)
throw new Error('Outlet is not activated');
this.location.detach();
var cmp = this.activated;
this.activated = null;
this._activatedRoute = null;
return cmp;
};
/**
* Called when the `RouteReuseStrategy` instructs to re-attach a previously detached subtree
*/
RouterOutlet.prototype.attach = function (ref, activatedRoute) {
this.activated = ref;
this._activatedRoute = activatedRoute;
this.location.insert(ref.hostView);
};
RouterOutlet.prototype.deactivate = function () {
if (this.activated) {
var c = this.component;
this.activated.destroy();
this.activated = null;
this._activatedRoute = null;
this.deactivateEvents.emit(c);
}
};
RouterOutlet.prototype.activateWith = function (activatedRoute, resolver) {
if (this.isActivated) {
throw new Error('Cannot activate an already activated outlet');
}
this._activatedRoute = activatedRoute;
var snapshot = activatedRoute._futureSnapshot;
var component = snapshot.routeConfig.component;
resolver = resolver || this.resolver;
var factory = resolver.resolveComponentFactory(component);
var childContexts = this.parentContexts.getOrCreateContext(this.name).children;
var injector = new OutletInjector(activatedRoute, childContexts, this.location.injector);
this.activated = this.location.createComponent(factory, this.location.length, injector);
// Calling `markForCheck` to make sure we will run the change detection when the
// `RouterOutlet` is inside a `ChangeDetectionStrategy.OnPush` component.
this.changeDetector.markForCheck();
this.activateEvents.emit(this.activated.instance);
};
tslib_1.__decorate([
Output('activate'),
tslib_1.__metadata("design:type", Object)
], RouterOutlet.prototype, "activateEvents", void 0);
tslib_1.__decorate([
Output('deactivate'),
tslib_1.__metadata("design:type", Object)
], RouterOutlet.prototype, "deactivateEvents", void 0);
RouterOutlet = tslib_1.__decorate([
Directive({ selector: 'router-outlet', exportAs: 'outlet' }),
tslib_1.__param(3, Attribute('name')),
tslib_1.__metadata("design:paramtypes", [ChildrenOutletContexts, ViewContainerRef,
ComponentFactoryResolver, String, ChangeDetectorRef])
], RouterOutlet);
return RouterOutlet;
}());
export { RouterOutlet };
var OutletInjector = /** @class */ (function () {
function OutletInjector(route, childContexts, parent) {
this.route = route;
this.childContexts = childContexts;
this.parent = parent;
}
OutletInjector.prototype.get = function (token, notFoundValue) {
if (token === ActivatedRoute) {
return this.route;
}
if (token === ChildrenOutletContexts) {
return this.childContexts;
}
return this.parent.get(token, notFoundValue);
};
return OutletInjector;
}());
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Attribute, ChangeDetectorRef, ComponentFactoryResolver, ComponentRef, Directive, EventEmitter, Injector, OnDestroy, OnInit, Output, ViewContainerRef} from '@angular/core';\n\nimport {Data} from '../config';\nimport {ChildrenOutletContexts} from '../router_outlet_context';\nimport {ActivatedRoute} from '../router_state';\nimport {PRIMARY_OUTLET} from '../shared';\n\n/**\n * @description\n *\n * Acts as a placeholder that Angular dynamically fills based on the current router state.\n *\n * ```\n * <router-outlet></router-outlet>\n * <router-outlet name='left'></router-outlet>\n * <router-outlet name='right'></router-outlet>\n * ```\n *\n * A router outlet will emit an activate event any time a new component is being instantiated,\n * and a deactivate event when it is being destroyed.\n *\n * ```\n * <router-outlet\n *   (activate)='onActivate($event)'\n *   (deactivate)='onDeactivate($event)'></router-outlet>\n * ```\n * @ngModule RouterModule\n *\n * @publicApi\n */\n@Directive({selector: 'router-outlet', exportAs: 'outlet'})\nexport class RouterOutlet implements OnDestroy, OnInit {\n  private activated: ComponentRef<any>|null = null;\n  private _activatedRoute: ActivatedRoute|null = null;\n  private name: string;\n\n  @Output('activate') activateEvents = new EventEmitter<any>();\n  @Output('deactivate') deactivateEvents = new EventEmitter<any>();\n\n  constructor(\n      private parentContexts: ChildrenOutletContexts, private location: ViewContainerRef,\n      private resolver: ComponentFactoryResolver, @Attribute('name') name: string,\n      private changeDetector: ChangeDetectorRef) {\n    this.name = name || PRIMARY_OUTLET;\n    parentContexts.onChildOutletCreated(this.name, this);\n  }\n\n  ngOnDestroy(): void { this.parentContexts.onChildOutletDestroyed(this.name); }\n\n  ngOnInit(): void {\n    if (!this.activated) {\n      // If the outlet was not instantiated at the time the route got activated we need to populate\n      // the outlet when it is initialized (ie inside a NgIf)\n      const context = this.parentContexts.getContext(this.name);\n      if (context && context.route) {\n        if (context.attachRef) {\n          // `attachRef` is populated when there is an existing component to mount\n          this.attach(context.attachRef, context.route);\n        } else {\n          // otherwise the component defined in the configuration is created\n          this.activateWith(context.route, context.resolver || null);\n        }\n      }\n    }\n  }\n\n  get isActivated(): boolean { return !!this.activated; }\n\n  get component(): Object {\n    if (!this.activated) throw new Error('Outlet is not activated');\n    return this.activated.instance;\n  }\n\n  get activatedRoute(): ActivatedRoute {\n    if (!this.activated) throw new Error('Outlet is not activated');\n    return this._activatedRoute as ActivatedRoute;\n  }\n\n  get activatedRouteData(): Data {\n    if (this._activatedRoute) {\n      return this._activatedRoute.snapshot.data;\n    }\n    return {};\n  }\n\n  /**\n   * Called when the `RouteReuseStrategy` instructs to detach the subtree\n   */\n  detach(): ComponentRef<any> {\n    if (!this.activated) throw new Error('Outlet is not activated');\n    this.location.detach();\n    const cmp = this.activated;\n    this.activated = null;\n    this._activatedRoute = null;\n    return cmp;\n  }\n\n  /**\n   * Called when the `RouteReuseStrategy` instructs to re-attach a previously detached subtree\n   */\n  attach(ref: ComponentRef<any>, activatedRoute: ActivatedRoute) {\n    this.activated = ref;\n    this._activatedRoute = activatedRoute;\n    this.location.insert(ref.hostView);\n  }\n\n  deactivate(): void {\n    if (this.activated) {\n      const c = this.component;\n      this.activated.destroy();\n      this.activated = null;\n      this._activatedRoute = null;\n      this.deactivateEvents.emit(c);\n    }\n  }\n\n  activateWith(activatedRoute: ActivatedRoute, resolver: ComponentFactoryResolver|null) {\n    if (this.isActivated) {\n      throw new Error('Cannot activate an already activated outlet');\n    }\n    this._activatedRoute = activatedRoute;\n    const snapshot = activatedRoute._futureSnapshot;\n    const component = <any>snapshot.routeConfig !.component;\n    resolver = resolver || this.resolver;\n    const factory = resolver.resolveComponentFactory(component);\n    const childContexts = this.parentContexts.getOrCreateContext(this.name).children;\n    const injector = new OutletInjector(activatedRoute, childContexts, this.location.injector);\n    this.activated = this.location.createComponent(factory, this.location.length, injector);\n    // Calling `markForCheck` to make sure we will run the change detection when the\n    // `RouterOutlet` is inside a `ChangeDetectionStrategy.OnPush` component.\n    this.changeDetector.markForCheck();\n    this.activateEvents.emit(this.activated.instance);\n  }\n}\n\nclass OutletInjector implements Injector {\n  constructor(\n      private route: ActivatedRoute, private childContexts: ChildrenOutletContexts,\n      private parent: Injector) {}\n\n  get(token: any, notFoundValue?: any): any {\n    if (token === ActivatedRoute) {\n      return this.route;\n    }\n\n    if (token === ChildrenOutletContexts) {\n      return this.childContexts;\n    }\n\n    return this.parent.get(token, notFoundValue);\n  }\n}\n"]}