@ui-tool/core
Version:
213 lines • 30 kB
JavaScript
import { ChangeDetectionStrategy, Component, Inject, Injector, Input } from '@angular/core';
import { v4 as uuid } from 'uuid';
import { Subject } from 'rxjs';
import { DISPLAY_SPINNER_OPTIONS, SPINNER_HOST, SPINNER_METHOD_INVOKE_CALLBACK, SPINNER_REQUEST_ID, SPINNER_SERVICE } from '../../constants/injectors/injectors';
import { BasicSpinnerComponent } from './basic-spinner/basic-spinner.component';
import { filter } from 'rxjs/operators';
import { SpinnerCommands } from '../../constants';
import { PurgeSpinnerCommand } from '../../models';
import * as i0 from "@angular/core";
export class SpinnerContainerComponent {
//#endregion
//#region Constructor
constructor(_spinnerService, _viewContainerRef, _changeDetectorRef, __injector) {
this._spinnerService = _spinnerService;
this._viewContainerRef = _viewContainerRef;
this._changeDetectorRef = _changeDetectorRef;
this.__injector = __injector;
this.id = uuid();
this.__id = uuid();
this.__hostClass = '';
this.__preserveLatestRequest = true;
this.__contexts = [];
this._visibilityEvent$ = new Subject();
}
//#endregion
//#region Accessors
set id(value) {
this.__id = value;
if (this._visibilityChangedSubscription && !this._visibilityChangedSubscription.closed) {
this._visibilityChangedSubscription.unsubscribe();
this._visibilityEvent$.next(undefined);
}
// Register spinner visibility changed event.
this._visibilityChangedSubscription = this._spinnerService
.hookSpinnerVisibilityEvent(value)
.subscribe((event) => this._visibilityEvent$.next(event));
}
get id() {
return this.__id;
}
set preserveLatestRequest(value) {
this.__preserveLatestRequest = value;
}
get preserveLatestRequest() {
return this.__preserveLatestRequest;
}
//#endregion
//#region Life cycle hooks
ngOnInit() {
// Subscription registration.
this.__localVisibilityRequestHandleSubscription = this._visibilityEvent$
.pipe(filter(command => command?.containerId === this.__id), filter(command => command !== null && command !== undefined))
.subscribe(command => {
this._handleVisibilityChangedEvent(command);
this._changeDetectorRef.markForCheck();
});
}
ngAfterViewInit() {
// Update component id to trigger spinner event.
this.id = this.__id || uuid();
}
//#endregion
//#region Methods
// Called when component is destroyed.
ngOnDestroy() {
this._visibilityChangedSubscription?.unsubscribe();
this._visibilityEvent$?.unsubscribe();
this.__localVisibilityRequestHandleSubscription?.unsubscribe();
}
// Handle visibility changed event.
_handleVisibilityChangedEvent(command) {
// Invalid command & view container ref.
if (!command || !this._viewContainerRef) {
return;
}
if (command.kind === SpinnerCommands.display) {
const actualCommand = command;
let purge = false;
if (actualCommand.options) {
purge = actualCommand.options.purge || false;
}
if (purge) {
const purgeRequest = new PurgeSpinnerCommand(actualCommand.containerId);
this._handleVisibilityChangedEvent(purgeRequest);
}
else if (this.__preserveLatestRequest) {
// Get the latest context.
const context = this._getLatestContext();
context?.context?.componentRef?.destroy();
}
this._displaySpinner(actualCommand, -1);
return;
}
if (command.kind === SpinnerCommands.close) {
const actualCommand = command;
if (actualCommand.id) {
this._dismissByRequestId(actualCommand.id);
}
// There is at least one display request. Display that one.
const { context, index: latestIndex } = this._getLatestContext();
if (context && latestIndex > -1) {
this._displaySpinner(context.command, latestIndex);
}
return;
}
if (command.kind === SpinnerCommands.purge) {
while (true) {
if (!this.__contexts.length) {
break;
}
this._dismissByRequestId(this.__contexts[0].command?.id, true);
}
return;
}
}
_displaySpinner(displaySpinnerRequest, index) {
if (!displaySpinnerRequest || !this._viewContainerRef) {
return;
}
const commandContext = {
command: displaySpinnerRequest,
componentRef: null
};
if (!(index < 0 || index >= this.__contexts.length)) {
this.__contexts[index].componentRef?.destroy();
}
const childInjector = Injector.create({
providers: [
{
provide: SPINNER_METHOD_INVOKE_CALLBACK,
useValue: displaySpinnerRequest.options?.invokedMethod
},
{
provide: SPINNER_REQUEST_ID,
useValue: displaySpinnerRequest.id
},
{
provide: DISPLAY_SPINNER_OPTIONS,
useValue: displaySpinnerRequest.options
},
{
provide: SPINNER_HOST,
useValue: displaySpinnerRequest.containerId
}
],
parent: this.__injector
});
if (!displaySpinnerRequest.options || !displaySpinnerRequest.options.instanceType) {
const componentRef = this._viewContainerRef.createComponent(BasicSpinnerComponent, {
injector: childInjector
});
componentRef.changeDetectorRef.markForCheck();
commandContext.componentRef = componentRef;
}
else {
const componentRef = this._viewContainerRef.createComponent(displaySpinnerRequest.options.instanceType, {
injector: childInjector
});
componentRef.changeDetectorRef.markForCheck();
commandContext.componentRef = componentRef;
}
if (index < 0 || index >= this.__contexts.length) {
this.__contexts.push(commandContext);
}
else {
this.__contexts[index] = commandContext;
}
}
_dismissByRequestId(requestId, force) {
const index = this.__contexts.findIndex(x => x.command?.id === requestId);
if (index < 0) {
return;
}
const context = this.__contexts[index];
if (!context) {
return;
}
const command = context.command;
if (!command || command.kind !== SpinnerCommands.display) {
return;
}
// Spinner cannot be closed.
const closingHandler = command?.options?.closing;
if (!force && closingHandler && !closingHandler()) {
return;
}
context.componentRef?.destroy();
context.componentRef = null;
command?.options?.closed?.(force || false);
this.__contexts.splice(index, 1);
}
_getLatestContext() {
if (this.__contexts.length < 1) {
return { context: null, index: -1 };
}
const lastIndex = this.__contexts.length - 1;
return { context: this.__contexts[lastIndex], index: lastIndex };
}
}
SpinnerContainerComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: SpinnerContainerComponent, deps: [{ token: SPINNER_SERVICE }, { token: i0.ViewContainerRef }, { token: i0.ChangeDetectorRef }, { token: i0.Injector }], target: i0.ɵɵFactoryTarget.Component });
SpinnerContainerComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.3.11", type: SpinnerContainerComponent, selector: "cms-spinner-container", inputs: { id: "id", preserveLatestRequest: "preserveLatestRequest" }, ngImport: i0, template: '', isInline: true, styles: [""], changeDetection: i0.ChangeDetectionStrategy.OnPush });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: SpinnerContainerComponent, decorators: [{
type: Component,
args: [{ selector: 'cms-spinner-container', template: '', changeDetection: ChangeDetectionStrategy.OnPush, styles: [""] }]
}], ctorParameters: function () { return [{ type: undefined, decorators: [{
type: Inject,
args: [SPINNER_SERVICE]
}] }, { type: i0.ViewContainerRef }, { type: i0.ChangeDetectorRef }, { type: i0.Injector }]; }, propDecorators: { id: [{
type: Input
}], preserveLatestRequest: [{
type: Input
}] } });
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{\n  AfterViewInit,\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component, ComponentFactoryResolver, ComponentRef,\n  Inject,\n  Injector,\n  Input,\n  OnDestroy,\n  OnInit,\n  ViewChild,\n  ViewContainerRef\n} from '@angular/core';\nimport {v4 as uuid} from 'uuid';\nimport {Subject, Subscription} from 'rxjs';\nimport {\n  DISPLAY_SPINNER_OPTIONS, SPINNER_HOST,\n  SPINNER_METHOD_INVOKE_CALLBACK,\n  SPINNER_REQUEST_ID,\n  SPINNER_SERVICE\n} from '../../constants/injectors/injectors';\nimport {ISpinnerService} from '../../services/interfaces/spinner-service.interface';\nimport {DisplaySpinnerCommand} from '../../models/implementations/spinners/display-spinner-command';\nimport {DeleteSpinnerCommand} from '../../models/implementations/spinners/delete-spinner-command';\nimport {BasicSpinnerComponent} from './basic-spinner/basic-spinner.component';\nimport {filter} from 'rxjs/operators';\nimport {SpinnerCommands} from '../../constants';\nimport {ISpinnerCommand, PurgeSpinnerCommand} from '../../models';\n\ndeclare type SpinnerCommandContext = {\n  command: DisplaySpinnerCommand,\n  componentRef: ComponentRef<any> | null\n};\n\n@Component({\n  selector: 'cms-spinner-container',\n  template: '',\n  styleUrls: ['spinner-container.component.scss'],\n  changeDetection: ChangeDetectionStrategy.OnPush\n})\nexport class SpinnerContainerComponent implements OnInit, AfterViewInit, OnDestroy {\n\n  //#region Properties\n\n  // Id of loading spinner.\n  private __id: string;\n\n  // Whether spinner only displays the latest request only or not.\n  private __preserveLatestRequest: boolean;\n\n  // Class which is applied to host component.\n  private __hostClass: string;\n\n  // Subject which emits spinner visibility event.\n  private readonly _visibilityEvent$: Subject<ISpinnerCommand | null>;\n\n  // Mapping between display request id & displayed component.\n  private readonly __contexts: SpinnerCommandContext[];\n\n  // Subscription to handle local visibility request.\n  private __localVisibilityRequestHandleSubscription: Subscription | undefined;\n\n  // Subscription watch list.\n  protected _visibilityChangedSubscription: Subscription | undefined;\n\n  //#endregion\n\n  //#region Accessors\n\n  @Input()\n  public set id(value: string) {\n    this.__id = value;\n\n    if (this._visibilityChangedSubscription && !this._visibilityChangedSubscription.closed) {\n      this._visibilityChangedSubscription.unsubscribe();\n      this._visibilityEvent$.next(undefined);\n    }\n\n    // Register spinner visibility changed event.\n    this._visibilityChangedSubscription = this._spinnerService\n      .hookSpinnerVisibilityEvent(value)\n      .subscribe((event: DisplaySpinnerCommand | DeleteSpinnerCommand) => this._visibilityEvent$.next(event));\n  }\n\n  public get id(): string {\n    return this.__id;\n  }\n\n  @Input()\n  public set preserveLatestRequest(value: boolean) {\n    this.__preserveLatestRequest = value;\n  }\n\n  public get preserveLatestRequest(): boolean {\n    return this.__preserveLatestRequest;\n  }\n\n  //#endregion\n\n  //#region Constructor\n\n  public constructor(@Inject(SPINNER_SERVICE)\n                     protected readonly _spinnerService: ISpinnerService,\n                     protected readonly _viewContainerRef: ViewContainerRef,\n                     protected readonly _changeDetectorRef: ChangeDetectorRef,\n                     private readonly __injector: Injector) {\n    this.id = uuid();\n\n    this.__id = uuid();\n    this.__hostClass = '';\n    this.__preserveLatestRequest = true;\n\n    this.__contexts = [];\n    this._visibilityEvent$ = new Subject<ISpinnerCommand | null>();\n  }\n\n  //#endregion\n\n  //#region Life cycle hooks\n\n  public ngOnInit(): void {\n\n    // Subscription registration.\n    this.__localVisibilityRequestHandleSubscription = this._visibilityEvent$\n      .pipe(\n        filter(command => command?.containerId === this.__id),\n        filter(command => command !== null && command !== undefined),\n      )\n      .subscribe(command => {\n        this._handleVisibilityChangedEvent(command);\n        this._changeDetectorRef.markForCheck();\n      });\n  }\n\n  public ngAfterViewInit(): void {\n    // Update component id to trigger spinner event.\n    this.id = this.__id || uuid();\n  }\n\n  //#endregion\n\n  //#region Methods\n\n  // Called when component is destroyed.\n  public ngOnDestroy(): void {\n\n    this._visibilityChangedSubscription?.unsubscribe();\n    this._visibilityEvent$?.unsubscribe();\n    this.__localVisibilityRequestHandleSubscription?.unsubscribe();\n  }\n\n  // Handle visibility changed event.\n  protected _handleVisibilityChangedEvent(command: ISpinnerCommand | null): void {\n\n    // Invalid command & view container ref.\n    if (!command || !this._viewContainerRef) {\n      return;\n    }\n\n    if (command.kind === SpinnerCommands.display) {\n      const actualCommand = command as DisplaySpinnerCommand;\n\n      let purge = false;\n      if (actualCommand.options) {\n        purge = actualCommand.options.purge || false;\n      }\n\n      if (purge) {\n        const purgeRequest = new PurgeSpinnerCommand(actualCommand.containerId);\n        this._handleVisibilityChangedEvent(purgeRequest);\n      } else if (this.__preserveLatestRequest) {\n        // Get the latest context.\n        const context = this._getLatestContext();\n        context?.context?.componentRef?.destroy();\n      }\n\n      this._displaySpinner(actualCommand, -1);\n      return;\n    }\n\n    if (command.kind === SpinnerCommands.close) {\n      const actualCommand = command as DeleteSpinnerCommand;\n      if (actualCommand.id) {\n        this._dismissByRequestId(actualCommand.id);\n      }\n\n      // There is at least one display request. Display that one.\n      const {context, index: latestIndex} = this._getLatestContext();\n      if (context && latestIndex > -1) {\n        this._displaySpinner(context.command, latestIndex);\n      }\n\n      return;\n    }\n\n    if (command.kind === SpinnerCommands.purge) {\n      while (true) {\n        if (!this.__contexts.length) {\n          break;\n        }\n\n        this._dismissByRequestId(this.__contexts[0].command?.id, true);\n      }\n\n      return;\n    }\n  }\n\n  protected _displaySpinner(displaySpinnerRequest: DisplaySpinnerCommand, index: number): void {\n\n    if (!displaySpinnerRequest || !this._viewContainerRef) {\n      return;\n    }\n\n    const commandContext: SpinnerCommandContext = {\n      command: displaySpinnerRequest,\n      componentRef: null\n    };\n\n    if (!(index < 0 || index >= this.__contexts.length)) {\n      this.__contexts[index].componentRef?.destroy();\n    }\n\n    const childInjector = Injector.create({\n      providers: [\n        {\n          provide: SPINNER_METHOD_INVOKE_CALLBACK,\n          useValue: displaySpinnerRequest.options?.invokedMethod\n        },\n        {\n          provide: SPINNER_REQUEST_ID,\n          useValue: displaySpinnerRequest.id\n        },\n        {\n          provide: DISPLAY_SPINNER_OPTIONS,\n          useValue: displaySpinnerRequest.options\n        },\n        {\n          provide: SPINNER_HOST,\n          useValue: displaySpinnerRequest.containerId\n        }\n      ],\n      parent: this.__injector\n    });\n\n    if (!displaySpinnerRequest.options || !displaySpinnerRequest.options.instanceType) {\n      const componentRef = this._viewContainerRef.createComponent(BasicSpinnerComponent, {\n        injector: childInjector\n      });\n      componentRef.changeDetectorRef.markForCheck();\n      commandContext.componentRef = componentRef;\n    } else {\n      const componentRef = this._viewContainerRef.createComponent(displaySpinnerRequest.options.instanceType, {\n        injector: childInjector\n      });\n      componentRef.changeDetectorRef.markForCheck();\n      commandContext.componentRef = componentRef;\n    }\n\n    if (index < 0 || index >= this.__contexts.length) {\n      this.__contexts.push(commandContext);\n    } else {\n      this.__contexts[index] = commandContext;\n    }\n  }\n\n  protected _dismissByRequestId(requestId: string, force?: boolean): void {\n    const index = this.__contexts.findIndex(x => x.command?.id === requestId);\n    if (index < 0) {\n      return;\n    }\n\n    const context = this.__contexts[index];\n    if (!context) {\n      return;\n    }\n\n    const command = context.command;\n    if (!command || command.kind !== SpinnerCommands.display) {\n      return;\n    }\n\n    // Spinner cannot be closed.\n    const closingHandler = command?.options?.closing;\n    if (!force && closingHandler && !closingHandler()) {\n      return;\n    }\n\n    context.componentRef?.destroy();\n    context.componentRef = null;\n    command?.options?.closed?.(force || false);\n    this.__contexts.splice(index, 1);\n  }\n\n  protected _getLatestContext(): { context: SpinnerCommandContext | null, index: number } {\n    if (this.__contexts.length < 1) {\n      return {context: null, index: -1};\n    }\n\n    const lastIndex = this.__contexts.length - 1;\n    return {context: this.__contexts[lastIndex], index: lastIndex};\n  }\n\n  //#endregion\n\n}\n"]}