@ui-tool/core
Version:
278 lines • 42.1 kB
JavaScript
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, ComponentFactoryResolver, Input, ViewChild, ViewContainerRef } from '@angular/core';
import { BANNER_BUILDER, BANNER_SERVICE, WINDOW } from '../../constants/injectors/injectors';
import { of, Subscription, throwError } from 'rxjs';
import { NavigationCancel, NavigationEnd, NavigationError, NavigationStart, Router, RouterEvent } from '@angular/router';
import { filter, map, mergeMap, retryWhen, switchMap, tap } from 'rxjs/operators';
import { findLastIndex } from 'lodash-es';
import * as i0 from "@angular/core";
export class BannerComponent {
//#endregion
//#region Constructor
constructor(injector) {
this.injector = injector;
this.id = '';
this.queryMode = 'pop';
this.preserveMode = 'navigate-start-clear';
this.container = null;
this._destroyBannerTimer = null;
this._displayingRequest = null;
this._displayRequests = [];
// Service reflection.
this.bannerService = this.injector.get(BANNER_SERVICE);
this.componentFactoryResolver = this.injector.get(ComponentFactoryResolver);
this.router = this.injector.get(Router);
this.windowService = this.injector.get(WINDOW);
this.bannerBuilders = this.injector.get(BANNER_BUILDER);
this.changeDetectorRef = this.injector.get(ChangeDetectorRef);
this._subscription = new Subscription();
}
//#endregion
//#region Methods
ngAfterViewInit() {
const id = this.id;
// Subscription about banner display requested.
const displayBannerSubscription = this.bannerService
.addedRequestEvent
.subscribe(request => {
// Container is invalid.
if (!this.container) {
return;
}
// Add the request into list.
this._displayRequests.push(request);
// No banner has been displayed before.
if (!this._displayingRequest) {
this.bannerService.displayNextBanner(id);
}
});
this._subscription.add(displayBannerSubscription);
// Subscription which raises when next banner display is requested.
const nextBannerDisplayRequestSubscription = this.bannerService
.nextBannerDisplayRequested
.pipe(switchMap(request => {
// Invalid container.
if (request.containerId && request.containerId !== id) {
return of(void (0));
}
if (!request.containerId) {
return of(void (0));
}
// Get the next settings.
const nextRequest = this.queryMode === 'pop' ? this.popRequest(request.containerId)
: this.dequeueRequest(request.containerId);
if (!nextRequest) {
// Clear the host view.
if (this.container) {
this.container.clear();
this._displayingRequest = null;
}
return of(void (0));
}
return this.displayBannerAsync(nextRequest)
.pipe(map(_ => void (0)));
}))
.subscribe(() => {
this.changeDetectorRef.markForCheck();
});
this._subscription.add(nextBannerDisplayRequestSubscription);
// Listen to navigation event.
const navigationEventSubscription = this.router
.events
.pipe(filter(e => e instanceof RouterEvent), filter(e => (e instanceof NavigationCancel) || (e instanceof NavigationEnd) || (e instanceof NavigationError)))
.subscribe(e => {
if (!this.container) {
return;
}
if (((e instanceof NavigationCancel) || (e instanceof NavigationEnd) || (e instanceof NavigationError))
&& this.preserveMode === 'navigate-end-clear') {
this.container.clear();
this.changeDetectorRef.markForCheck();
}
if ((e instanceof NavigationStart)
&& this.preserveMode === 'navigate-start-clear') {
this.container.clear();
this.changeDetectorRef.markForCheck();
}
});
this._subscription.add(navigationEventSubscription);
// Hook delete display banner request.
this.hookDeleteRequestEvent();
}
// Called when component is destroyed.
ngOnDestroy() {
this._subscription?.unsubscribe();
// Clear the previous timeout.
if (this._destroyBannerTimer) {
this.windowService.clearTimeout(this._destroyBannerTimer);
}
}
//#endregion
//#region Internal methods
hookDeleteRequestEvent() {
const deleteRequestSubscription = this.bannerService
.deleteRequestEvent
.subscribe(deleteRequest => {
// Container is invalid.
if (!this.container) {
return;
}
let index = 0;
while (index < this._displayRequests.length) {
// Container is invalid.
if (deleteRequest.containerId && deleteRequest.containerId !== this.id) {
index++;
continue;
}
// Request id is invalid.
if (deleteRequest.id && deleteRequest.id !== this._displayingRequest?.id) {
index++;
continue;
}
this._displayRequests.splice(index, 1);
}
if (!this.ableToDeleteDisplayingRequest(deleteRequest)) {
return;
}
this.container.clear();
this._displayingRequest = null;
this.changeDetectorRef.markForCheck();
});
this._subscription.add(deleteRequestSubscription);
}
// Display banner by handling request.
displayBannerAsync(bannerDisplayRequest) {
// Invalid request.
if (!bannerDisplayRequest) {
return of(void (0));
}
// Request does not belong to the current container.
if (bannerDisplayRequest.containerId && this.id
&& bannerDisplayRequest.containerId !== this.id) {
return of(void (0));
}
const settings = bannerDisplayRequest.settings;
if (!settings) {
return of(void (0));
}
// Clear the previous timeout.
if (this._destroyBannerTimer) {
this.windowService.clearTimeout(this._destroyBannerTimer);
}
let itemIndex = 0;
const builders = this.bannerBuilders;
const isNotAbleToBuildException = 'IS_NOT_ABLE_TO_BE_BUILT';
const noBuilderAvailableException = 'NO_BUILDER_AVAILABLE';
const maxRetriesExceeded = 'MAX_RETRIES_EXCEEDED';
return of(void (0))
.pipe(tap(_ => {
if (!builders) {
throw noBuilderAvailableException;
}
if (itemIndex > builders.length - 1) {
throw maxRetriesExceeded;
}
}), mergeMap(_ => builders[itemIndex].canBuildAsync(bannerDisplayRequest.settings)), mergeMap(ableToBuild => {
if (!ableToBuild) {
return throwError(isNotAbleToBuildException);
}
return builders[itemIndex].buildAsync(bannerDisplayRequest.settings)
.pipe(tap((componentRef) => {
if (!this.container) {
return;
}
// Update the request.
this._displayingRequest = bannerDisplayRequest;
const hookDisposeRequest = componentRef.instance
.disposeRequestingEvent
.subscribe((_) => {
this.bannerService.displayNextBanner(this.id);
});
componentRef.onDestroy(() => {
if (hookDisposeRequest && !hookDisposeRequest.closed) {
hookDisposeRequest.unsubscribe();
}
// Mark no request to be displayed.
this._displayingRequest = null;
});
// Detect changes.
componentRef.changeDetectorRef.detectChanges();
this.container.clear();
this.container.insert(componentRef.hostView);
if (settings.timeout && settings.timeout.duration && settings.timeout.action) {
this._destroyBannerTimer = this.windowService
.setTimeout(() => {
// Do action on timeout.
if (settings && settings.timeout) {
settings.timeout.action();
}
}, settings.timeout.duration);
}
}), map(_ => void (0)));
}), retryWhen(exceptionObservable => {
return exceptionObservable
.pipe(tap(exception => {
if (exception !== isNotAbleToBuildException) {
throw exception;
}
itemIndex++;
}));
}));
//#endregion
}
// Whether displaying request is removable or not.
ableToDeleteDisplayingRequest(deleteRequest) {
if (deleteRequest.containerId && deleteRequest.containerId !== this.id) {
return false;
}
if (deleteRequest.id && deleteRequest.id !== this._displayingRequest?.id) {
return false;
}
return true;
}
// Dequeue request.
dequeueRequest(containerId) {
if (!this._displayRequests || !this._displayRequests.length) {
return null;
}
// Get first match item in the messages list.
const itemIndex = this._displayRequests.findIndex(x => x.containerId === containerId);
if (itemIndex < 0) {
return null;
}
const item = this._displayRequests[itemIndex];
this._displayRequests.splice(itemIndex, 1);
return item;
}
// Pop request.
popRequest(containerId) {
if (!this._displayRequests || !this._displayRequests.length) {
return null;
}
// Find the last index of item.
const lastIndex = findLastIndex(this._displayRequests, x => x.containerId === containerId);
if (lastIndex < 0) {
return null;
}
const item = this._displayRequests[lastIndex];
this._displayRequests.splice(lastIndex, 1);
return item;
}
}
BannerComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: BannerComponent, deps: [{ token: i0.Injector }], target: i0.ɵɵFactoryTarget.Component });
BannerComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.3.11", type: BannerComponent, selector: "cms-banner", inputs: { id: "id", queryMode: ["query-mode", "queryMode"], preserveMode: ["preserve-mode", "preserveMode"] }, viewQueries: [{ propertyName: "container", first: true, predicate: ["container"], descendants: true, read: ViewContainerRef }], ngImport: i0, template: "<ng-template #container></ng-template>\n", changeDetection: i0.ChangeDetectionStrategy.OnPush });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: BannerComponent, decorators: [{
type: Component,
args: [{ selector: 'cms-banner', changeDetection: ChangeDetectionStrategy.OnPush, template: "<ng-template #container></ng-template>\n" }]
}], ctorParameters: function () { return [{ type: i0.Injector }]; }, propDecorators: { id: [{
type: Input
}], queryMode: [{
type: Input,
args: ['query-mode']
}], preserveMode: [{
type: Input,
args: ['preserve-mode']
}], container: [{
type: ViewChild,
args: ['container', { read: ViewContainerRef }]
}] } });
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{\n  AfterViewInit,\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ComponentFactoryResolver,\n  ComponentRef,\n  Injector,\n  Input,\n  OnDestroy,\n  ViewChild,\n  ViewContainerRef\n} from '@angular/core';\nimport {BANNER_BUILDER, BANNER_SERVICE, WINDOW} from '../../constants/injectors/injectors';\nimport {Observable, of, Subscription, throwError} from 'rxjs';\nimport {NavigationCancel, NavigationEnd, NavigationError, NavigationStart, Router, RouterEvent} from '@angular/router';\nimport {filter, map, mergeMap, retryWhen, switchMap, tap} from 'rxjs/operators';\nimport {BANNER_PRESERVE_MODE, BANNER_QUERY_MODE} from '../../constants/data-type.constant';\nimport {findLastIndex} from 'lodash-es';\nimport {IBannerContentBuilder} from '../../services/interfaces/banners/banner-content-builder.interface';\nimport {BannerService} from '../../services/implementations/banners/banner.service';\nimport {IDisplayBannerRequest} from '../../models/interfaces/banners/add-banner-content-request.interface';\nimport {IBannerContentComponent} from '../../models/interfaces/banners/banner-content-component.interface';\nimport {IDeleteBannerRequest} from '../../models/interfaces/banners/delete-banner-content-request.interface';\n\n@Component({\n  // tslint:disable-next-line:component-selector\n  selector: 'cms-banner',\n  templateUrl: 'banner.component.html',\n  changeDetection: ChangeDetectionStrategy.OnPush\n})\nexport class BannerComponent implements AfterViewInit, OnDestroy {\n\n  //#region Properties\n\n  // Unique id of a banner container.\n  @Input()\n  public id: string;\n\n  // How banner is queried for being displayed.\n  // tslint:disable-next-line:no-input-rename\n  @Input('query-mode')\n  public queryMode: BANNER_QUERY_MODE;\n\n  // How banner preserve message.\n  // tslint:disable-next-line:no-input-rename\n  @Input('preserve-mode')\n  public preserveMode: BANNER_PRESERVE_MODE;\n\n  // Get the banner container area.\n  @ViewChild('container', {read: ViewContainerRef})\n  public container: ViewContainerRef | null;\n\n  // Request which is currently applied to the banner container.\n  // tslint:disable-next-line:variable-name\n  private _displayingRequest: IDisplayBannerRequest | null;\n\n  // Background task which is for destroying currently displayed banner.\n  // tslint:disable-next-line:variable-name\n  private _destroyBannerTimer: number | null;\n\n  // List of request about banner display.\n  // tslint:disable-next-line:variable-name\n  private readonly _displayRequests: IDisplayBannerRequest[];\n\n  // Subscription watch list.\n  // tslint:disable-next-line:variable-name\n  private readonly _subscription: Subscription;\n\n  //#endregion\n\n  //#region Services\n\n  // Service for handling banner business.\n  protected readonly bannerService: BannerService;\n\n  // Component factory resolver.\n  protected readonly componentFactoryResolver: ComponentFactoryResolver;\n\n  // Router service.\n  protected readonly router: Router;\n\n  // Window service.\n  protected readonly windowService: Window;\n\n  // Banner builder.\n  protected readonly bannerBuilders: IBannerContentBuilder[];\n\n  protected readonly changeDetectorRef: ChangeDetectorRef;\n\n  //#endregion\n\n  //#region Constructor\n\n  public constructor(protected injector: Injector) {\n    this.id = '';\n    this.queryMode = 'pop';\n    this.preserveMode = 'navigate-start-clear';\n    this.container = null;\n    this._destroyBannerTimer = null;\n    this._displayingRequest = null;\n    this._displayRequests = [];\n\n    // Service reflection.\n    this.bannerService = this.injector.get(BANNER_SERVICE) as any as BannerService;\n    this.componentFactoryResolver = this.injector.get(ComponentFactoryResolver);\n    this.router = this.injector.get(Router);\n    this.windowService = this.injector.get(WINDOW) as Window;\n    this.bannerBuilders = this.injector.get(BANNER_BUILDER) as any as IBannerContentBuilder[];\n    this.changeDetectorRef = this.injector.get(ChangeDetectorRef);\n    this._subscription = new Subscription();\n  }\n\n  //#endregion\n\n  //#region Methods\n\n  public ngAfterViewInit(): void {\n\n    const id = this.id;\n\n    // Subscription about banner display requested.\n    const displayBannerSubscription = this.bannerService\n      .addedRequestEvent\n      .subscribe(request => {\n\n        // Container is invalid.\n        if (!this.container) {\n          return;\n        }\n\n        // Add the request into list.\n        this._displayRequests.push(request);\n\n        // No banner has been displayed before.\n        if (!this._displayingRequest) {\n          this.bannerService.displayNextBanner(id);\n        }\n      });\n    this._subscription.add(displayBannerSubscription);\n\n    // Subscription which raises when next banner display is requested.\n    const nextBannerDisplayRequestSubscription = this.bannerService\n      .nextBannerDisplayRequested\n      .pipe(\n        switchMap(request => {\n\n          // Invalid container.\n          if (request.containerId && request.containerId !== id) {\n            return of(void (0));\n          }\n\n          if (!request.containerId) {\n            return of(void (0));\n          }\n\n          // Get the next settings.\n          const nextRequest = this.queryMode === 'pop' ? this.popRequest(request.containerId)\n            : this.dequeueRequest(request.containerId);\n\n          if (!nextRequest) {\n            // Clear the host view.\n            if (this.container) {\n              this.container.clear();\n              this._displayingRequest = null;\n            }\n\n            return of(void (0));\n          }\n\n          return this.displayBannerAsync(nextRequest)\n            .pipe(\n              map(_ => void (0))\n            );\n        })\n      )\n      .subscribe(() => {\n        this.changeDetectorRef.markForCheck();\n      });\n\n    this._subscription.add(nextBannerDisplayRequestSubscription);\n\n    // Listen to navigation event.\n    const navigationEventSubscription = this.router\n      .events\n      .pipe(\n        filter(e => e instanceof RouterEvent),\n        filter(e => (e instanceof NavigationCancel) || (e instanceof NavigationEnd) || (e instanceof NavigationError))\n      )\n      .subscribe(e => {\n\n        if (!this.container) {\n          return;\n        }\n\n        if (((e instanceof NavigationCancel) || (e instanceof NavigationEnd) || (e instanceof NavigationError))\n          && this.preserveMode === 'navigate-end-clear') {\n          this.container.clear();\n          this.changeDetectorRef.markForCheck();\n        }\n\n        if ((e instanceof NavigationStart)\n          && this.preserveMode === 'navigate-start-clear') {\n          this.container.clear();\n          this.changeDetectorRef.markForCheck();\n        }\n      });\n    this._subscription.add(navigationEventSubscription);\n\n    // Hook delete display banner request.\n    this.hookDeleteRequestEvent();\n  }\n\n  // Called when component is destroyed.\n  public ngOnDestroy(): void {\n    this._subscription?.unsubscribe();\n\n    // Clear the previous timeout.\n    if (this._destroyBannerTimer) {\n      this.windowService.clearTimeout(this._destroyBannerTimer);\n    }\n  }\n\n  //#endregion\n\n  //#region Internal methods\n\n  protected hookDeleteRequestEvent(): void {\n    const deleteRequestSubscription = this.bannerService\n      .deleteRequestEvent\n      .subscribe(deleteRequest => {\n\n        // Container is invalid.\n        if (!this.container) {\n          return;\n        }\n\n        let index = 0;\n\n        while (index < this._displayRequests.length) {\n\n          // Container is invalid.\n          if (deleteRequest.containerId && deleteRequest.containerId !== this.id) {\n            index++;\n            continue;\n          }\n\n          // Request id is invalid.\n          if (deleteRequest.id && deleteRequest.id !== this._displayingRequest?.id) {\n            index++;\n            continue;\n          }\n\n          this._displayRequests.splice(index, 1);\n        }\n\n        if (!this.ableToDeleteDisplayingRequest(deleteRequest)) {\n          return;\n        }\n\n        this.container.clear();\n        this._displayingRequest = null;\n        this.changeDetectorRef.markForCheck();\n      });\n    this._subscription.add(deleteRequestSubscription);\n  }\n\n  // Display banner by handling request.\n  protected displayBannerAsync(bannerDisplayRequest: IDisplayBannerRequest): Observable<void> {\n\n    // Invalid request.\n    if (!bannerDisplayRequest) {\n      return of(void (0));\n    }\n\n    // Request does not belong to the current container.\n    if (bannerDisplayRequest.containerId && this.id\n      && bannerDisplayRequest.containerId !== this.id) {\n      return of(void (0));\n    }\n\n    const settings = bannerDisplayRequest.settings;\n    if (!settings) {\n      return of(void (0));\n    }\n\n    // Clear the previous timeout.\n    if (this._destroyBannerTimer) {\n      this.windowService.clearTimeout(this._destroyBannerTimer);\n    }\n\n    let itemIndex = 0;\n    const builders = this.bannerBuilders;\n    const isNotAbleToBuildException = 'IS_NOT_ABLE_TO_BE_BUILT';\n    const noBuilderAvailableException = 'NO_BUILDER_AVAILABLE';\n    const maxRetriesExceeded = 'MAX_RETRIES_EXCEEDED';\n\n    return of(void (0))\n      .pipe(\n        tap(_ => {\n          if (!builders) {\n            throw noBuilderAvailableException;\n          }\n\n          if (itemIndex > builders.length - 1) {\n            throw maxRetriesExceeded;\n          }\n        }),\n        mergeMap(_ => builders[itemIndex].canBuildAsync(bannerDisplayRequest.settings)),\n        mergeMap(ableToBuild => {\n          if (!ableToBuild) {\n            return throwError(isNotAbleToBuildException);\n          }\n\n          return builders[itemIndex].buildAsync(bannerDisplayRequest.settings)\n            .pipe(\n              tap((componentRef: ComponentRef<IBannerContentComponent>) => {\n\n                if (!this.container) {\n                  return;\n                }\n\n                // Update the request.\n                this._displayingRequest = bannerDisplayRequest;\n\n                const hookDisposeRequest = componentRef.instance\n                  .disposeRequestingEvent\n                  .subscribe((_: any) => {\n                    this.bannerService.displayNextBanner(this.id);\n                  });\n\n                componentRef.onDestroy(() => {\n                  if (hookDisposeRequest && !hookDisposeRequest.closed) {\n                    hookDisposeRequest.unsubscribe();\n                  }\n\n                  // Mark no request to be displayed.\n                  this._displayingRequest = null;\n                });\n\n                // Detect changes.\n                componentRef.changeDetectorRef.detectChanges();\n\n                this.container.clear();\n                this.container.insert(componentRef.hostView);\n\n                if (settings.timeout && settings.timeout.duration && settings.timeout.action) {\n                  this._destroyBannerTimer = this.windowService\n                    .setTimeout(() => {\n                      // Do action on timeout.\n                      if (settings && settings.timeout) {\n                        settings.timeout.action();\n                      }\n                    }, settings.timeout.duration);\n                }\n              }),\n              map(_ => void (0))\n            );\n        }),\n        retryWhen(exceptionObservable => {\n          return exceptionObservable\n            .pipe(\n              tap(exception => {\n                if (exception !== isNotAbleToBuildException) {\n                  throw exception;\n                }\n\n                itemIndex++;\n              })\n            );\n        })\n      );\n\n    //#endregion\n  }\n\n  // Whether displaying request is removable or not.\n  protected ableToDeleteDisplayingRequest(deleteRequest: IDeleteBannerRequest): boolean {\n\n    if (deleteRequest.containerId && deleteRequest.containerId !== this.id) {\n      return false;\n    }\n\n    if (deleteRequest.id && deleteRequest.id !== this._displayingRequest?.id) {\n      return false;\n    }\n\n    return true;\n  }\n\n  // Dequeue request.\n  protected dequeueRequest(containerId: string): IDisplayBannerRequest | null {\n    if (!this._displayRequests || !this._displayRequests.length) {\n      return null;\n    }\n\n    // Get first match item in the messages list.\n    const itemIndex = this._displayRequests.findIndex(x => x.containerId === containerId);\n    if (itemIndex < 0) {\n      return null;\n    }\n\n    const item = this._displayRequests[itemIndex];\n    this._displayRequests.splice(itemIndex, 1);\n    return item;\n  }\n\n  // Pop request.\n  protected popRequest(containerId: string): IDisplayBannerRequest | null {\n    if (!this._displayRequests || !this._displayRequests.length) {\n      return null;\n    }\n\n    // Find the last index of item.\n    const lastIndex = findLastIndex(this._displayRequests, x => x.containerId === containerId);\n    if (lastIndex < 0) {\n      return null;\n    }\n\n    const item = this._displayRequests[lastIndex];\n    this._displayRequests.splice(lastIndex, 1);\n    return item;\n  }\n\n  //#endregion\n}\n","<ng-template #container></ng-template>\n"]}