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Angular - the routing library
There is a newer version: 19.0.0
/**
 * @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.dev/license
 */
import { EnvironmentInjector, Injectable } from '@angular/core';
import { getClosestRouteInjector } from './utils/config';
import * as i0 from "@angular/core";
/**
 * Store contextual information about a `RouterOutlet`
 *
 * @publicApi
 */
export class OutletContext {
    get injector() {
        return getClosestRouteInjector(this.route?.snapshot) ?? this.rootInjector;
    }
    // TODO(atscott): Only here to avoid a "breaking" change in a patch/minor. Remove in v19.
    set injector(_) { }
    constructor(rootInjector) {
        this.rootInjector = rootInjector;
        this.outlet = null;
        this.route = null;
        this.children = new ChildrenOutletContexts(this.rootInjector);
        this.attachRef = null;
    }
}
/**
 * Store contextual information about the children (= nested) `RouterOutlet`
 *
 * @publicApi
 */
export class ChildrenOutletContexts {
    /** @nodoc */
    constructor(rootInjector) {
        this.rootInjector = rootInjector;
        // 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;
            context.attachRef = 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.rootInjector);
            this.contexts.set(childName, context);
        }
        return context;
    }
    getContext(childName) {
        return this.contexts.get(childName) || null;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: ChildrenOutletContexts, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }
    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: ChildrenOutletContexts, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: ChildrenOutletContexts, decorators: [{
            type: Injectable,
            args: [{ providedIn: 'root' }]
        }], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });
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