@angular/router
Version:
Angular - the routing library
73 lines • 7.25 kB
JavaScript
/**
* @license
* Copyright Google LLC 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
*/
/**
* Store contextual information about a `RouterOutlet`
*
* @publicApi
*/
export class OutletContext {
constructor() {
this.outlet = null;
this.route = null;
this.resolver = null;
this.children = new ChildrenOutletContexts();
this.attachRef = null;
}
}
/**
* Store contextual information about the children (= nested) `RouterOutlet`
*
* @publicApi
*/
export class ChildrenOutletContexts {
constructor() {
// contexts for child outlets, by name.
this.contexts = new Map();
}
/** Called when a `RouterOutlet` directive is instantiated */
onChildOutletCreated(childName, outlet) {
const context = this.getOrCreateContext(childName);
context.outlet = outlet;
this.contexts.set(childName, context);
}
/**
* Called when a `RouterOutlet` directive is destroyed.
* We need to keep the context as the outlet could be destroyed inside a NgIf and might be
* re-created later.
*/
onChildOutletDestroyed(childName) {
const context = this.getContext(childName);
if (context) {
context.outlet = null;
}
}
/**
* Called when the corresponding route is deactivated during navigation.
* Because the component get destroyed, all children outlet are destroyed.
*/
onOutletDeactivated() {
const contexts = this.contexts;
this.contexts = new Map();
return contexts;
}
onOutletReAttached(contexts) {
this.contexts = contexts;
}
getOrCreateContext(childName) {
let context = this.getContext(childName);
if (!context) {
context = new OutletContext();
this.contexts.set(childName, context);
}
return context;
}
getContext(childName) {
return this.contexts.get(childName) || null;
}
}
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RDb250ZXh0KGNoaWxkTmFtZTogc3RyaW5nKTogT3V0bGV0Q29udGV4dHxudWxsIHtcbiAgICByZXR1cm4gdGhpcy5jb250ZXh0cy5nZXQoY2hpbGROYW1lKSB8fCBudWxsO1xuICB9XG59XG4iXX0=