@c8y/ngx-components
Version:
Angular modules for Cumulocity IoT applications
233 lines • 31 kB
JavaScript
import { inject, Injectable, signal } from '@angular/core';
import { BehaviorSubject, Subject } from 'rxjs';
import { distinctUntilChanged, filter, map, skip, switchMap, tap } from 'rxjs/operators';
import { DEFAULT_INTERVAL_STATE, DEFAULT_INTERVAL_VALUE, GLOBAL_CONTEXT_AUTO_REFRESH } from './widget-auto-refresh-context.model';
import { ActivatedRoute, NavigationCancel, NavigationEnd, NavigationError, NavigationStart, Router } from '@angular/router';
import * as i0 from "@angular/core";
export class WidgetGlobalAutoRefreshService {
constructor() {
/**
* A BehaviorSubject that tracks the number of loading operations in progress.
* Initialized with a count of 0.
*/
this.loadingCount$ = new BehaviorSubject(0);
/**
* An Observable that emits a boolean indicating whether any widgets with global refresh option are currently loading.
* The value is true if the loading count is non-zero, and false if the loading count is zero.
* Uses distinctUntilChanged() to emit only when the boolean value changes.
*/
this.isLoadingWidgets$ = this.loadingCount$.pipe(distinctUntilChanged(), map(count => count !== 0));
/**
* Object containing behavior subjects for managing auto-refresh settings.
*/
this.autoRefreshSettings = {
/**
* BehaviorSubject that emits the current state of auto-refresh button.
* Defaults to DEFAULT_INTERVAL_STATE.
*/
isEnabled$: new BehaviorSubject(DEFAULT_INTERVAL_STATE),
/**
* BehaviorSubject that emits the current auto-refresh interval value.
* Defaults to DEFAULT_INTERVAL_VALUE.
*/
refreshInterval$: new BehaviorSubject(DEFAULT_INTERVAL_VALUE),
/**
* BehaviorSubject that emits whether auto-refresh has been manually disabled by the user.
* Defaults to false.
*/
userDisabledManually$: new BehaviorSubject(false)
};
/**
* Object containing subjects for managing countdown actions.
*/
this.countdownActions = {
/**
* Subject used to stop the countdown.
*/
stop$: new Subject(),
/**
* Subject used to reset the countdown.
*/
reset$: new Subject(),
/**
* Subject that emits when the countdown has ended.
*/
countdownEnded$: new Subject()
};
/**
* Subject that emits when a dashboard save operation is triggered.
*/
this.onDashboardSave$ = new Subject();
/**
* A signal representing the number of widgets with the global auto-refresh option enabled.
*/
this.globalRefreshWidgetsCount = signal(0);
/**
* Tracks the navigation state.
*
* The signal returns a boolean indicating whether a navigation operation is currently in progress.
* It initializes with a default value of `false` and can be toggled to `true` during navigation events from `handleNavigationInProgress$`.
*/
this.navigationInProgress = signal(false);
this.router = inject(Router);
this.activatedRoute = inject(ActivatedRoute);
}
/**
* Increments the loading count by 1.
*/
incrementLoading() {
this.loadingCount$.next(this.loadingCount$.value + 1);
}
/**
* Decrements the loading count by 1.
*/
decrementLoading() {
this.loadingCount$.next(this.loadingCount$.value - 1);
}
/**
* Retrieves an observable that emits the value of a Global Auto Refresh query parameter
* whenever it changes. The query parameter being tracked is determined by
* `GlobalAutoRefreshName.GLOBAL_CONTEXT_AUTO_REFRESH`.
*
* @returns An observable that emits the parsed value of the `GLOBAL_CONTEXT_AUTO_REFRESH` query parameter.
*/
getQueryParamChangeValue$() {
return this.activatedRoute.queryParams.pipe(map(params => params[GLOBAL_CONTEXT_AUTO_REFRESH]), map(this.parseGlobalAutoRefreshParam));
}
/**
* Monitors router navigation events and updates the navigation progress state.
*
* @returns An Observable that emits router events of types NavigationStart, NavigationEnd,
* NavigationCancel, and NavigationError.
*/
handleNavigationInProgress$() {
return this.router.events.pipe(filter(event => event instanceof NavigationStart ||
event instanceof NavigationEnd ||
event instanceof NavigationCancel ||
event instanceof NavigationError), tap(e => this.navigationInProgress.set(e instanceof NavigationStart)));
}
/**
* Sets the global auto-refresh query parameter in the current route.
*
* @param queryParams - An object representing the query parameters to set for the global auto-refresh option.
* The existing query parameters will be merged with these.
*/
async setAutoRefreshQueryParam(queryParams) {
if (this.navigationInProgress()) {
return;
}
this.navigationInProgress.set(true);
await this.router.navigate([], {
relativeTo: this.activatedRoute,
queryParams,
queryParamsHandling: 'merge'
});
this.navigationInProgress.set(false);
}
/**
* Handles changes to the edit mode and updates the isEnabled$ variable.
*
* - If auto-refresh was manually disabled by the user (`userDisabledManually$` is `true`), auto-refresh will remain disabled regardless of the edit mode state.
* - If auto-refresh was not manually disabled, it will be disabled when entering edit mode and enabled when exiting edit mode.
*
* @param editMode - A boolean indicating the current state of edit mode (`true` if edit mode is active, `false` otherwise).
*/
onEditModeChange(editMode) {
if (this.autoRefreshSettings.userDisabledManually$.getValue()) {
this.autoRefreshSettings.isEnabled$.next(false);
return;
}
this.autoRefreshSettings.isEnabled$.next(!editMode);
}
/**
* Returns an Observable that triggers the countdown reset action when loading completes.
*
* This method creates an Observable that:
* - Skips a specified number of initial emissions from `isLoadingWidgets$` based on the `skipInitialBehaviorSubjectEmission$` method.
* - Filters out emissions where the loading state is true.
* - On emission where the loading state is false, it triggers a countdown reset action.
*
*/
resetCountdownOnLoadingComplete$() {
return switchMap(() => this.isLoadingWidgets$.pipe(tap(isLoading => isLoading && this.countdownActions.stop$.next()), filter(loading => !loading), tap(() => this.resetCountdown())));
}
/**
* Resets the service's settings and parameters to their default values.
*/
resetServiceToDefaults() {
setTimeout(() => !this.navigationInProgress() && this.clearQueryParam());
this.autoRefreshSettings.refreshInterval$.next(DEFAULT_INTERVAL_VALUE);
this.autoRefreshSettings.userDisabledManually$.next(false);
setTimeout(() => {
this.autoRefreshSettings.isEnabled$.next(DEFAULT_INTERVAL_STATE);
this.resetLoadingToZero();
this.navigationInProgress.set(false);
});
}
/**
* Resets the countdown timer by emitting a reset action after a short delay.
*/
resetCountdown() {
queueMicrotask(() => this.countdownActions.reset$.next());
}
/**
* Initializes the auto-refresh countdown logic based on the widget loading state and edit mode.
*
* This method returns an observable that monitors the widget loading state and triggers specific actions
* related to the countdown process. It performs the following steps:
*
* 1. Skips the initial loading state emitted by `isLoadingWidgets$`.
* 2. Stops the countdown if the widgets are currently loading.
* 3. Filters out cases where widgets are loading or the application is in edit mode.
* 4. Resets the countdown when widgets are not loading and the application is not in edit mode.
*
* @param editMode$ - A `BehaviorSubject` representing whether the application is currently in edit mode.
*
* @returns An `Observable<boolean>` that emits the loading state of the widgets after the initialization steps.
*/
initializeAutoRefreshCountdownLoading$(editMode$) {
return this.isLoadingWidgets$.pipe(skip(1), tap(isLoading => isLoading && this.countdownActions.stop$.next()), filter(isWidgetsLoading => !isWidgetsLoading && !editMode$.getValue()), tap(() => this.resetCountdown()));
}
/**
* Parses a string representation of global auto-refresh parameter into a boolean or null.
*
* Converts the provided `globalAutoRefresh` string into a boolean value or null based on its content:
* - Returns `true` if `globalAutoRefresh` is 'true'.
* - Returns `false` if `globalAutoRefresh` is 'false'.
* - Returns `null` if `globalAutoRefresh` is neither 'true' nor 'false'.
*
* @param globalAutoRefresh - The string representation of the global auto-refresh parameter.
*
* @returns A boolean value corresponding to the parsed global auto-refresh state, or null if the input is not 'true' or 'false'.
*/
parseGlobalAutoRefreshParam(globalAutoRefresh) {
return globalAutoRefresh === 'false' ? false : globalAutoRefresh === 'true' ? true : null;
}
/**
* Resets the loading count to zero.
*/
resetLoadingToZero() {
this.loadingCount$.next(0);
}
/**
* Clears the global auto-refresh query parameter by navigating to the current route with the parameter set to null.
*
*/
clearQueryParam() {
const queryParams = {
globalContextAutoRefresh: null
};
this.router.navigate([], {
relativeTo: this.activatedRoute,
queryParams,
queryParamsHandling: 'merge'
});
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: WidgetGlobalAutoRefreshService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: WidgetGlobalAutoRefreshService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: WidgetGlobalAutoRefreshService, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}] });
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{ inject, Injectable, signal } from '@angular/core';\nimport { BehaviorSubject, MonoTypeOperatorFunction, Observable, Subject } from 'rxjs';\nimport { distinctUntilChanged, filter, map, skip, switchMap, tap } from 'rxjs/operators';\nimport {\n  DEFAULT_INTERVAL_STATE,\n  DEFAULT_INTERVAL_VALUE,\n  GLOBAL_CONTEXT_AUTO_REFRESH,\n  GlobalAutoRefreshQueryParam\n} from './widget-auto-refresh-context.model';\nimport {\n  ActivatedRoute,\n  Event,\n  NavigationCancel,\n  NavigationEnd,\n  NavigationError,\n  NavigationStart,\n  Router\n} from '@angular/router';\n\n@Injectable({ providedIn: 'root' })\nexport class WidgetGlobalAutoRefreshService {\n  /**\n   * A BehaviorSubject that tracks the number of loading operations in progress.\n   * Initialized with a count of 0.\n   */\n  private loadingCount$ = new BehaviorSubject<number>(0);\n\n  /**\n   * An Observable that emits a boolean indicating whether any widgets with global refresh option are currently loading.\n   * The value is true if the loading count is non-zero, and false if the loading count is zero.\n   * Uses distinctUntilChanged() to emit only when the boolean value changes.\n   */\n  private isLoadingWidgets$: Observable<boolean> = this.loadingCount$.pipe(\n    distinctUntilChanged(),\n    map(count => count !== 0)\n  );\n\n  /**\n   * Object containing behavior subjects for managing auto-refresh settings.\n   */\n  autoRefreshSettings = {\n    /**\n     * BehaviorSubject that emits the current state of auto-refresh button.\n     * Defaults to DEFAULT_INTERVAL_STATE.\n     */\n    isEnabled$: new BehaviorSubject<boolean>(DEFAULT_INTERVAL_STATE),\n    /**\n     * BehaviorSubject that emits the current auto-refresh interval value.\n     * Defaults to DEFAULT_INTERVAL_VALUE.\n     */\n    refreshInterval$: new BehaviorSubject<number>(DEFAULT_INTERVAL_VALUE),\n    /**\n     * BehaviorSubject that emits whether auto-refresh has been manually disabled by the user.\n     * Defaults to false.\n     */\n    userDisabledManually$: new BehaviorSubject(false)\n  };\n\n  /**\n   * Object containing subjects for managing countdown actions.\n   */\n  countdownActions = {\n    /**\n     * Subject used to stop the countdown.\n     */\n    stop$: new Subject<void>(),\n    /**\n     * Subject used to reset the countdown.\n     */\n    reset$: new Subject<void>(),\n    /**\n     * Subject that emits when the countdown has ended.\n     */\n    countdownEnded$: new Subject<void>()\n  };\n\n  /**\n   * Subject that emits when a dashboard save operation is triggered.\n   */\n  onDashboardSave$ = new Subject<void>();\n\n  /**\n   * A signal representing the number of widgets with the global auto-refresh option enabled.\n   */\n  globalRefreshWidgetsCount = signal(0);\n\n  /**\n   * Tracks the navigation state.\n   *\n   * The signal returns a boolean indicating whether a navigation operation is currently in progress.\n   * It initializes with a default value of `false` and can be toggled to `true` during navigation events from `handleNavigationInProgress$`.\n   */\n  private navigationInProgress = signal(false);\n\n  private readonly router = inject(Router);\n  private readonly activatedRoute = inject(ActivatedRoute);\n\n  /**\n   * Increments the loading count by 1.\n   */\n  incrementLoading(): void {\n    this.loadingCount$.next(this.loadingCount$.value + 1);\n  }\n\n  /**\n   * Decrements the loading count by 1.\n   */\n  decrementLoading(): void {\n    this.loadingCount$.next(this.loadingCount$.value - 1);\n  }\n\n  /**\n   * Retrieves an observable that emits the value of a Global Auto Refresh query parameter\n   * whenever it changes. The query parameter being tracked is determined by\n   * `GlobalAutoRefreshName.GLOBAL_CONTEXT_AUTO_REFRESH`.\n   *\n   * @returns An observable that emits the parsed value of the `GLOBAL_CONTEXT_AUTO_REFRESH` query parameter.\n   */\n  getQueryParamChangeValue$(): Observable<boolean | null> {\n    return this.activatedRoute.queryParams.pipe(\n      map(params => params[GLOBAL_CONTEXT_AUTO_REFRESH]),\n      map(this.parseGlobalAutoRefreshParam)\n    );\n  }\n\n  /**\n   * Monitors router navigation events and updates the navigation progress state.\n   *\n   * @returns An Observable that emits router events of types NavigationStart, NavigationEnd,\n   *          NavigationCancel, and NavigationError.\n   */\n  handleNavigationInProgress$(): Observable<Event> {\n    return this.router.events.pipe(\n      filter(\n        event =>\n          event instanceof NavigationStart ||\n          event instanceof NavigationEnd ||\n          event instanceof NavigationCancel ||\n          event instanceof NavigationError\n      ),\n      tap(e => this.navigationInProgress.set(e instanceof NavigationStart))\n    );\n  }\n\n  /**\n   * Sets the global auto-refresh query parameter in the current route.\n   *\n   * @param queryParams - An object representing the query parameters to set for the global auto-refresh option.\n   *                      The existing query parameters will be merged with these.\n   */\n  async setAutoRefreshQueryParam(queryParams: GlobalAutoRefreshQueryParam): Promise<void> {\n    if (this.navigationInProgress()) {\n      return;\n    }\n\n    this.navigationInProgress.set(true);\n    await this.router.navigate([], {\n      relativeTo: this.activatedRoute,\n      queryParams,\n      queryParamsHandling: 'merge'\n    });\n    this.navigationInProgress.set(false);\n  }\n\n  /**\n   * Handles changes to the edit mode and updates the isEnabled$ variable.\n   *\n   * - If auto-refresh was manually disabled by the user (`userDisabledManually$` is `true`), auto-refresh will remain disabled regardless of the edit mode state.\n   * - If auto-refresh was not manually disabled, it will be disabled when entering edit mode and enabled when exiting edit mode.\n   *\n   * @param editMode - A boolean indicating the current state of edit mode (`true` if edit mode is active, `false` otherwise).\n   */\n  onEditModeChange(editMode: boolean): void {\n    if (this.autoRefreshSettings.userDisabledManually$.getValue()) {\n      this.autoRefreshSettings.isEnabled$.next(false);\n      return;\n    }\n    this.autoRefreshSettings.isEnabled$.next(!editMode);\n  }\n\n  /**\n   * Returns an Observable that triggers the countdown reset action when loading completes.\n   *\n   * This method creates an Observable that:\n   * - Skips a specified number of initial emissions from `isLoadingWidgets$` based on the `skipInitialBehaviorSubjectEmission$` method.\n   * - Filters out emissions where the loading state is true.\n   * - On emission where the loading state is false, it triggers a countdown reset action.\n   *\n   */\n  resetCountdownOnLoadingComplete$(): MonoTypeOperatorFunction<any> {\n    return switchMap(() =>\n      this.isLoadingWidgets$.pipe(\n        tap(isLoading => isLoading && this.countdownActions.stop$.next()),\n        filter(loading => !loading),\n        tap(() => this.resetCountdown())\n      )\n    );\n  }\n\n  /**\n   * Resets the service's settings and parameters to their default values.\n   */\n  resetServiceToDefaults(): void {\n    setTimeout(() => !this.navigationInProgress() && this.clearQueryParam());\n\n    this.autoRefreshSettings.refreshInterval$.next(DEFAULT_INTERVAL_VALUE);\n    this.autoRefreshSettings.userDisabledManually$.next(false);\n\n    setTimeout(() => {\n      this.autoRefreshSettings.isEnabled$.next(DEFAULT_INTERVAL_STATE);\n      this.resetLoadingToZero();\n      this.navigationInProgress.set(false);\n    });\n  }\n\n  /**\n   * Resets the countdown timer by emitting a reset action after a short delay.\n   */\n  resetCountdown(): void {\n    queueMicrotask(() => this.countdownActions.reset$.next());\n  }\n\n  /**\n   * Initializes the auto-refresh countdown logic based on the widget loading state and edit mode.\n   *\n   * This method returns an observable that monitors the widget loading state and triggers specific actions\n   * related to the countdown process. It performs the following steps:\n   *\n   * 1. Skips the initial loading state emitted by `isLoadingWidgets$`.\n   * 2. Stops the countdown if the widgets are currently loading.\n   * 3. Filters out cases where widgets are loading or the application is in edit mode.\n   * 4. Resets the countdown when widgets are not loading and the application is not in edit mode.\n   *\n   * @param editMode$ - A `BehaviorSubject` representing whether the application is currently in edit mode.\n   *\n   * @returns An `Observable<boolean>` that emits the loading state of the widgets after the initialization steps.\n   */\n  initializeAutoRefreshCountdownLoading$(editMode$: BehaviorSubject<boolean>): Observable<boolean> {\n    return this.isLoadingWidgets$.pipe(\n      skip(1),\n      tap(isLoading => isLoading && this.countdownActions.stop$.next()),\n      filter(isWidgetsLoading => !isWidgetsLoading && !editMode$.getValue()),\n      tap(() => this.resetCountdown())\n    );\n  }\n\n  /**\n   * Parses a string representation of global auto-refresh parameter into a boolean or null.\n   *\n   * Converts the provided `globalAutoRefresh` string into a boolean value or null based on its content:\n   * - Returns `true` if `globalAutoRefresh` is 'true'.\n   * - Returns `false` if `globalAutoRefresh` is 'false'.\n   * - Returns `null` if `globalAutoRefresh` is neither 'true' nor 'false'.\n   *\n   * @param globalAutoRefresh - The string representation of the global auto-refresh parameter.\n   *\n   * @returns A boolean value corresponding to the parsed global auto-refresh state, or null if the input is not 'true' or 'false'.\n   */\n  private parseGlobalAutoRefreshParam(globalAutoRefresh: string): boolean | null {\n    return globalAutoRefresh === 'false' ? false : globalAutoRefresh === 'true' ? true : null;\n  }\n\n  /**\n   * Resets the loading count to zero.\n   */\n  private resetLoadingToZero(): void {\n    this.loadingCount$.next(0);\n  }\n\n  /**\n   * Clears the global auto-refresh query parameter by navigating to the current route with the parameter set to null.\n   *\n   */\n  private clearQueryParam(): void {\n    const queryParams: GlobalAutoRefreshQueryParam = {\n      globalContextAutoRefresh: null\n    };\n\n    this.router.navigate([], {\n      relativeTo: this.activatedRoute,\n      queryParams,\n      queryParamsHandling: 'merge'\n    });\n  }\n}\n"]}