@spartacus/storefront
Version:
Spartacus Storefront is a package that you can include in your application, which allows you to add default storefront features.
159 lines • 22.4 kB
JavaScript
import { ChangeDetectionStrategy, Component, HostBinding, Input, } from '@angular/core';
import { BehaviorSubject, Subscription } from 'rxjs';
import { distinctUntilChanged, map, switchMap, tap } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "@spartacus/core";
import * as i2 from "./page-slot.service";
import * as i3 from "../../outlet/outlet.directive";
import * as i4 from "@angular/common";
import * as i5 from "../component/component-wrapper.directive";
/**
* The `PageSlotComponent` is used to render the CMS page slot and it's components.
*
* The Page slot host element will be supplemented with css classes so that the layout
* can be fully controlled by customers:
* - The page slot _position_ is added as a css class by default.
* - The `cx-pending` is added for as long as the slot hasn't start loading.
* - The `page-fold` style class is added for the page slot which is configured as the page fold.
*/
export class PageSlotComponent {
constructor(cmsService, dynamicAttributeService, renderer, elementRef, cd, pageSlotService) {
this.cmsService = cmsService;
this.dynamicAttributeService = dynamicAttributeService;
this.renderer = renderer;
this.elementRef = elementRef;
this.cd = cd;
this.pageSlotService = pageSlotService;
/**
* Indicates that the page slot is the last page slot above the fold.
*/
this.isPageFold = false;
/**
* Indicates that the components of the page slot haven't been loaded as long
* as the isPending state is true.
*/
this.isPending = true;
/**
* Indicates that the page slot doesn't contain any components. This is no
* longer used in spartacus, but kept for backwards compatibility.
*/
this.hasComponents = false;
this.position$ = new BehaviorSubject(undefined);
this.slot$ = this.position$.pipe(switchMap((position) => this.cmsService.getContentSlot(position)), distinctUntilChanged(this.isDistinct));
/** Observes the components for the given page slot. */
this.components$ = this.slot$.pipe(map((slot) => { var _a; return (_a = slot === null || slot === void 0 ? void 0 : slot.components) !== null && _a !== void 0 ? _a : []; }));
this.subscription = new Subscription();
/** Keeps track of the pending components that must be loaded for the page slot */
this.pendingComponentCount = 0;
}
/**
* The position represents the unique key for a page slot on a single page, but can
* be reused cross pages.
*
* The position is used to find the CMS components for the page slot. It is also
* added as an additional CSS class so that layout can be applied.
*/
set position(value) {
this.position$.next(value);
}
get position() {
return this.position$.value;
}
ngOnInit() {
this.subscription.add(this.slot$.pipe(tap((slot) => this.decorate(slot))).subscribe((value) => {
this.components = (value === null || value === void 0 ? void 0 : value.components) || [];
this.cd.markForCheck();
}));
}
decorate(slot) {
var _a, _b;
let cls = this.class || '';
if (this.lastPosition && cls.indexOf(this.lastPosition) > -1) {
cls = cls.replace(this.lastPosition, '');
}
if (this.position$.value) {
cls += ` ${this.position$.value}`;
this.lastPosition = this.position$.value;
}
// host bindings
this.pending = ((_a = slot === null || slot === void 0 ? void 0 : slot.components) === null || _a === void 0 ? void 0 : _a.length) || 0;
this.hasComponents = ((_b = slot === null || slot === void 0 ? void 0 : slot.components) === null || _b === void 0 ? void 0 : _b.length) > 0;
if (cls && cls !== this.class) {
this.class = cls;
}
if (slot) {
this.dynamicAttributeService.addAttributesToSlot(this.elementRef.nativeElement, this.renderer, slot);
}
}
/**
* Sets the pending count for the page slot components. Once all pending components are
* loaded, the `isPending` flag is updated, so that the associated class can be updated
*/
set pending(count) {
this.pendingComponentCount = count;
this.isPending = this.pendingComponentCount > 0;
}
get pending() {
return this.pendingComponentCount;
}
/*
* Is triggered when a component is added to the view. This is used to
* update the pending count
*/
isLoaded(loadState) {
if (loadState) {
this.pending--;
this.cd.markForCheck();
}
}
/**
* The `DeferLoadingStrategy` indicates whether the component should be
* rendered instantly or whether it should be deferred.
*/
getComponentDeferOptions(componentType) {
return this.pageSlotService.getComponentDeferOptions(this.position, componentType);
}
isDistinct(old, current) {
var _a;
return (current.components &&
((_a = old.components) === null || _a === void 0 ? void 0 : _a.length) === current.components.length &&
!old.components.find((el, index) => el.uid !== current.components[index].uid));
}
ngOnDestroy() {
var _a;
(_a = this.subscription) === null || _a === void 0 ? void 0 : _a.unsubscribe();
}
}
PageSlotComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: PageSlotComponent, deps: [{ token: i1.CmsService }, { token: i1.DynamicAttributeService }, { token: i0.Renderer2 }, { token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i2.PageSlotService }], target: i0.ɵɵFactoryTarget.Component });
PageSlotComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "12.0.5", type: PageSlotComponent, selector: "cx-page-slot,[cx-page-slot]", inputs: { position: "position", class: "class", isPageFold: "isPageFold", hasComponents: "hasComponents" }, host: { properties: { "attr.position": "this.position", "class": "this.class", "class.page-fold": "this.isPageFold", "class.cx-pending": "this.isPending", "class.has-components": "this.hasComponents" } }, ngImport: i0, template: "<ng-template\n [cxOutlet]=\"position\"\n [cxOutletContext]=\"{ components$: components$ }\"\n>\n <ng-template\n *ngFor=\"let component of components\"\n [cxOutlet]=\"component.flexType\"\n [cxOutletContext]=\"{ component: component }\"\n [cxOutletDefer]=\"getComponentDeferOptions(component.flexType)\"\n (loaded)=\"isLoaded($event)\"\n >\n <ng-container [cxComponentWrapper]=\"component\"></ng-container>\n </ng-template>\n</ng-template>\n", directives: [{ type: i3.OutletDirective, selector: "[cxOutlet]", inputs: ["cxOutlet", "cxOutletContext", "cxOutletDefer"], outputs: ["loaded"] }, { type: i4.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { type: i5.ComponentWrapperDirective, selector: "[cxComponentWrapper]", inputs: ["cxComponentWrapper"], outputs: ["cxComponentRef"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: PageSlotComponent, decorators: [{
type: Component,
args: [{
selector: 'cx-page-slot,[cx-page-slot]',
templateUrl: './page-slot.component.html',
changeDetection: ChangeDetectionStrategy.OnPush,
}]
}], ctorParameters: function () { return [{ type: i1.CmsService }, { type: i1.DynamicAttributeService }, { type: i0.Renderer2 }, { type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i2.PageSlotService }]; }, propDecorators: { position: [{
type: HostBinding,
args: ['attr.position']
}, {
type: Input
}], class: [{
type: Input
}, {
type: HostBinding
}], isPageFold: [{
type: HostBinding,
args: ['class.page-fold']
}, {
type: Input
}], isPending: [{
type: HostBinding,
args: ['class.cx-pending']
}], hasComponents: [{
type: HostBinding,
args: ['class.has-components']
}, {
type: Input
}] } });
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The page slot _position_ is added as a css class by default.\n * - The `cx-pending` is added for as long as the slot hasn't start loading.\n * - The `page-fold` style class is added for the page slot which is configured as the page fold.\n */\n@Component({\n  selector: 'cx-page-slot,[cx-page-slot]',\n  templateUrl: './page-slot.component.html',\n  changeDetection: ChangeDetectionStrategy.OnPush,\n})\nexport class PageSlotComponent implements OnInit, OnDestroy {\n  /**\n   * The position represents the unique key for a page slot on a single page, but can\n   * be reused cross pages.\n   *\n   * The position is used to find the CMS components for the page slot. It is also\n   * added as an additional CSS class so that layout can be applied.\n   */\n  @HostBinding('attr.position')\n  @Input()\n  set position(value: string) {\n    this.position$.next(value);\n  }\n  get position(): string {\n    return this.position$.value;\n  }\n\n  /**\n   * Maintains css classes introduced by the host and adds additional classes.\n   */\n  @Input() @HostBinding() class: string;\n\n  /**\n   * Indicates that the page slot is the last page slot above the fold.\n   */\n  @HostBinding('class.page-fold') @Input() isPageFold = false;\n\n  /**\n   * Indicates that the components of the page slot haven't been loaded as long\n   * as the isPending state is true.\n   */\n  @HostBinding('class.cx-pending') isPending = true;\n\n  /**\n   * Indicates that the page slot doesn't contain any components. This is no\n   * longer used in spartacus, but kept for backwards compatibility.\n   */\n  @HostBinding('class.has-components') @Input() hasComponents = false;\n\n  protected position$: BehaviorSubject<string> = new BehaviorSubject(undefined);\n\n  components: ContentSlotComponentData[];\n\n  protected slot$: Observable<ContentSlotData> = this.position$.pipe(\n    switchMap((position) => this.cmsService.getContentSlot(position)),\n    distinctUntilChanged(this.isDistinct)\n  );\n\n  /** Observes the components for the given page slot. */\n  components$: Observable<ContentSlotComponentData[]> = this.slot$.pipe(\n    map((slot) => slot?.components ?? [])\n  );\n\n  protected subscription: Subscription = new Subscription();\n\n  /** Keeps track of the pending components that must be loaded for the page slot */\n  private pendingComponentCount = 0;\n\n  /** Tracks the last used position, in case the page slot is used dynamically */\n  private lastPosition: string;\n  constructor(\n    protected cmsService: CmsService,\n    protected dynamicAttributeService: DynamicAttributeService,\n    protected renderer: Renderer2,\n    protected elementRef: ElementRef,\n    protected cd: ChangeDetectorRef,\n    protected pageSlotService: PageSlotService\n  ) {}\n\n  ngOnInit() {\n    this.subscription.add(\n      this.slot$.pipe(tap((slot) => this.decorate(slot))).subscribe((value) => {\n        this.components = value?.components || [];\n        this.cd.markForCheck();\n      })\n    );\n  }\n\n  protected decorate(slot: ContentSlotData): void {\n    let cls = this.class || '';\n\n    if (this.lastPosition && cls.indexOf(this.lastPosition) > -1) {\n      cls = cls.replace(this.lastPosition, '');\n    }\n    if (this.position$.value) {\n      cls += ` ${this.position$.value}`;\n      this.lastPosition = this.position$.value;\n    }\n\n    // host bindings\n    this.pending = slot?.components?.length || 0;\n    this.hasComponents = slot?.components?.length > 0;\n    if (cls && cls !== this.class) {\n      this.class = cls;\n    }\n\n    if (slot) {\n      this.dynamicAttributeService.addAttributesToSlot(\n        this.elementRef.nativeElement,\n        this.renderer,\n        slot\n      );\n    }\n  }\n\n  /**\n   * Sets the pending count for the page slot components. Once all pending components are\n   * loaded, the `isPending` flag is updated, so that the associated class can be updated\n   */\n  protected set pending(count: number) {\n    this.pendingComponentCount = count;\n    this.isPending = this.pendingComponentCount > 0;\n  }\n\n  protected get pending(): number {\n    return this.pendingComponentCount;\n  }\n\n  /*\n   * Is triggered when a component is added to the view. This is used to\n   * update the pending count\n   */\n  isLoaded(loadState: boolean) {\n    if (loadState) {\n      this.pending--;\n      this.cd.markForCheck();\n    }\n  }\n\n  /**\n   * The `DeferLoadingStrategy` indicates whether the component should be\n   * rendered instantly or whether it should be deferred.\n   */\n  getComponentDeferOptions(componentType: string): IntersectionOptions {\n    return this.pageSlotService.getComponentDeferOptions(\n      this.position,\n      componentType\n    );\n  }\n\n  protected isDistinct(old: ContentSlotData, current: ContentSlotData) {\n    return (\n      current.components &&\n      old.components?.length === current.components.length &&\n      !old.components.find(\n        (el, index) => el.uid !== current.components[index].uid\n      )\n    );\n  }\n\n  ngOnDestroy() {\n    this.subscription?.unsubscribe();\n  }\n}\n","<ng-template\n  [cxOutlet]=\"position\"\n  [cxOutletContext]=\"{ components$: components$ }\"\n>\n  <ng-template\n    *ngFor=\"let component of components\"\n    [cxOutlet]=\"component.flexType\"\n    [cxOutletContext]=\"{ component: component }\"\n    [cxOutletDefer]=\"getComponentDeferOptions(component.flexType)\"\n    (loaded)=\"isLoaded($event)\"\n  >\n    <ng-container [cxComponentWrapper]=\"component\"></ng-container>\n  </ng-template>\n</ng-template>\n"]}