angular2
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Angular 2 - a web framework for modern web apps
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JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
import { PromiseWrapper, EventEmitter } from 'angular2/src/facade/async';
import { StringMapWrapper } from 'angular2/src/facade/collection';
import { isBlank, isPresent } from 'angular2/src/facade/lang';
import { Directive, Attribute, DynamicComponentLoader, ViewContainerRef, provide, ReflectiveInjector, Output } from 'angular2/core';
import * as routerMod from '../router';
import { RouteParams, RouteData } from '../instruction';
import * as hookMod from '../lifecycle/lifecycle_annotations';
import { hasLifecycleHook } from '../lifecycle/route_lifecycle_reflector';
let _resolveToTrue = PromiseWrapper.resolve(true);
/**
* A router outlet is a placeholder that Angular dynamically fills based on the application's route.
*
* ## Use
*
* ```
* <router-outlet></router-outlet>
* ```
*/
export let RouterOutlet = class RouterOutlet {
constructor(_viewContainerRef, _loader, _parentRouter, nameAttr) {
this._viewContainerRef = _viewContainerRef;
this._loader = _loader;
this._parentRouter = _parentRouter;
this.name = null;
this._componentRef = null;
this._currentInstruction = null;
this.activateEvents = new EventEmitter();
if (isPresent(nameAttr)) {
this.name = nameAttr;
this._parentRouter.registerAuxOutlet(this);
}
else {
this._parentRouter.registerPrimaryOutlet(this);
}
}
/**
* Called by the Router to instantiate a new component during the commit phase of a navigation.
* This method in turn is responsible for calling the `routerOnActivate` hook of its child.
*/
activate(nextInstruction) {
var previousInstruction = this._currentInstruction;
this._currentInstruction = nextInstruction;
var componentType = nextInstruction.componentType;
var childRouter = this._parentRouter.childRouter(componentType);
var providers = ReflectiveInjector.resolve([
provide(RouteData, { useValue: nextInstruction.routeData }),
provide(RouteParams, { useValue: new RouteParams(nextInstruction.params) }),
provide(routerMod.Router, { useValue: childRouter })
]);
this._componentRef =
this._loader.loadNextToLocation(componentType, this._viewContainerRef, providers);
return this._componentRef.then((componentRef) => {
this.activateEvents.emit(componentRef.instance);
if (hasLifecycleHook(hookMod.routerOnActivate, componentType)) {
return this._componentRef.then((ref) => ref.instance.routerOnActivate(nextInstruction, previousInstruction));
}
else {
return componentRef;
}
});
}
/**
* Called by the {@link Router} during the commit phase of a navigation when an outlet
* reuses a component between different routes.
* This method in turn is responsible for calling the `routerOnReuse` hook of its child.
*/
reuse(nextInstruction) {
var previousInstruction = this._currentInstruction;
this._currentInstruction = nextInstruction;
// it's possible the component is removed before it can be reactivated (if nested withing
// another dynamically loaded component, for instance). In that case, we simply activate
// a new one.
if (isBlank(this._componentRef)) {
return this.activate(nextInstruction);
}
else {
return PromiseWrapper.resolve(hasLifecycleHook(hookMod.routerOnReuse, this._currentInstruction.componentType) ?
this._componentRef.then((ref) => ref.instance.routerOnReuse(nextInstruction, previousInstruction)) :
true);
}
}
/**
* Called by the {@link Router} when an outlet disposes of a component's contents.
* This method in turn is responsible for calling the `routerOnDeactivate` hook of its child.
*/
deactivate(nextInstruction) {
var next = _resolveToTrue;
if (isPresent(this._componentRef) && isPresent(this._currentInstruction) &&
hasLifecycleHook(hookMod.routerOnDeactivate, this._currentInstruction.componentType)) {
next = this._componentRef.then((ref) => ref.instance
.routerOnDeactivate(nextInstruction, this._currentInstruction));
}
return next.then((_) => {
if (isPresent(this._componentRef)) {
var onDispose = this._componentRef.then((ref) => ref.destroy());
this._componentRef = null;
return onDispose;
}
});
}
/**
* Called by the {@link Router} during recognition phase of a navigation.
*
* If this resolves to `false`, the given navigation is cancelled.
*
* This method delegates to the child component's `routerCanDeactivate` hook if it exists,
* and otherwise resolves to true.
*/
routerCanDeactivate(nextInstruction) {
if (isBlank(this._currentInstruction)) {
return _resolveToTrue;
}
if (hasLifecycleHook(hookMod.routerCanDeactivate, this._currentInstruction.componentType)) {
return this._componentRef.then((ref) => ref.instance
.routerCanDeactivate(nextInstruction, this._currentInstruction));
}
else {
return _resolveToTrue;
}
}
/**
* Called by the {@link Router} during recognition phase of a navigation.
*
* If the new child component has a different Type than the existing child component,
* this will resolve to `false`. You can't reuse an old component when the new component
* is of a different Type.
*
* Otherwise, this method delegates to the child component's `routerCanReuse` hook if it exists,
* or resolves to true if the hook is not present.
*/
routerCanReuse(nextInstruction) {
var result;
if (isBlank(this._currentInstruction) ||
this._currentInstruction.componentType != nextInstruction.componentType) {
result = false;
}
else if (hasLifecycleHook(hookMod.routerCanReuse, this._currentInstruction.componentType)) {
result = this._componentRef.then((ref) => ref.instance.routerCanReuse(nextInstruction, this._currentInstruction));
}
else {
result = nextInstruction == this._currentInstruction ||
(isPresent(nextInstruction.params) && isPresent(this._currentInstruction.params) &&
StringMapWrapper.equals(nextInstruction.params, this._currentInstruction.params));
}
return PromiseWrapper.resolve(result);
}
ngOnDestroy() { this._parentRouter.unregisterPrimaryOutlet(this); }
};
__decorate([
Output('activate'),
__metadata('design:type', Object)
], RouterOutlet.prototype, "activateEvents", void 0);
RouterOutlet = __decorate([
Directive({ selector: 'router-outlet' }),
__param(3, Attribute('name')),
__metadata('design:paramtypes', [ViewContainerRef, DynamicComponentLoader, routerMod.Router, String])
], RouterOutlet);