@trademe/ng-defer-load
Version:
Angular directive to load elements lazily
127 lines • 16.8 kB
JavaScript
import { isPlatformBrowser, isPlatformServer } from '@angular/common';
import { Directive, EventEmitter, Inject, Input, Output, PLATFORM_ID } from '@angular/core';
import { fromEvent } from 'rxjs';
import { debounceTime } from 'rxjs/operators';
import * as i0 from "@angular/core";
export class DeferLoadDirective {
constructor(_element, _zone, platformId) {
this._element = _element;
this._zone = _zone;
this.platformId = platformId;
this.preRender = true;
this.fallbackEnabled = true;
this.removeListenersAfterLoad = true;
this.deferLoad = new EventEmitter();
this.checkForIntersection = (entries) => {
entries.forEach((entry) => {
if (this.checkIfIntersecting(entry)) {
this.load();
if (this._intersectionObserver && this._element.nativeElement) {
this._intersectionObserver.unobserve((this._element.nativeElement));
}
}
});
};
this.onScroll = () => {
if (this.isVisible()) {
this._zone.run(() => this.load());
}
};
}
ngOnInit() {
if ((isPlatformServer(this.platformId) && this.preRender)
|| (isPlatformBrowser(this.platformId) && !this.fallbackEnabled && !this.hasCompatibleBrowser())) {
this.load();
}
}
ngAfterViewInit() {
if (isPlatformBrowser(this.platformId)) {
if (this.hasCompatibleBrowser()) {
this.registerIntersectionObserver();
if (this._intersectionObserver && this._element.nativeElement) {
this._intersectionObserver.observe((this._element.nativeElement));
}
}
else if (this.fallbackEnabled) {
this.addScrollListeners();
}
}
}
hasCompatibleBrowser() {
const hasIntersectionObserver = 'IntersectionObserver' in window;
const userAgent = window.navigator.userAgent;
const matches = userAgent.match(/Edge\/(\d*)\./i);
const isEdge = !!matches && matches.length > 1;
const isEdgeVersion16OrBetter = isEdge && (!!matches && parseInt(matches[1], 10) > 15);
return hasIntersectionObserver && (!isEdge || isEdgeVersion16OrBetter);
}
ngOnDestroy() {
this.removeListeners();
}
registerIntersectionObserver() {
if (!!this._intersectionObserver) {
return;
}
this._intersectionObserver = new IntersectionObserver(entries => {
this.checkForIntersection(entries);
}, {});
}
checkIfIntersecting(entry) {
// For Samsung native browser, IO has been partially implemented whereby the
// callback fires, but entry object is empty. We will check manually.
if (entry && entry.time) {
return entry.isIntersecting && entry.target === this._element.nativeElement;
}
return this.isVisible();
}
load() {
if (this.removeListenersAfterLoad) {
this.removeListeners();
}
this.deferLoad.emit();
}
addScrollListeners() {
if (this.isVisible()) {
this.load();
return;
}
this._zone.runOutsideAngular(() => {
this._scrollSubscription = fromEvent(window, 'scroll')
.pipe(debounceTime(50))
.subscribe(this.onScroll);
});
}
removeListeners() {
this._scrollSubscription?.unsubscribe();
this._intersectionObserver?.disconnect();
}
isVisible() {
let scrollPosition = this.getScrollPosition();
let elementOffset = this._element.nativeElement.getBoundingClientRect().top + window.scrollY;
return elementOffset <= scrollPosition;
}
getScrollPosition() {
// Getting screen size and scroll position for IE
return window.scrollY + (document.documentElement.clientHeight || document.body.clientHeight);
}
}
DeferLoadDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: DeferLoadDirective, deps: [{ token: i0.ElementRef }, { token: i0.NgZone }, { token: PLATFORM_ID }], target: i0.ɵɵFactoryTarget.Directive });
DeferLoadDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.2.12", type: DeferLoadDirective, selector: "[deferLoad]", inputs: { preRender: "preRender", fallbackEnabled: "fallbackEnabled", removeListenersAfterLoad: "removeListenersAfterLoad" }, outputs: { deferLoad: "deferLoad" }, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: DeferLoadDirective, decorators: [{
type: Directive,
args: [{
selector: '[deferLoad]'
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.NgZone }, { type: Object, decorators: [{
type: Inject,
args: [PLATFORM_ID]
}] }]; }, propDecorators: { preRender: [{
type: Input
}], fallbackEnabled: [{
type: Input
}], removeListenersAfterLoad: [{
type: Input
}], deferLoad: [{
type: Output
}] } });
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"defer-load.directive.js","sourceRoot":"","sources":["../../src/defer-load.directive.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,iBAAiB,EAAE,gBAAgB,EAAE,MAAM,iBAAiB,CAAC;AACtE,OAAO,EAAiB,SAAS,EAAc,YAAY,EAAE,MAAM,EAAE,KAAK,EAA6B,MAAM,EAAE,WAAW,EAAE,MAAM,eAAe,CAAC;AAClJ,OAAO,EAAE,SAAS,EAAgB,MAAM,MAAM,CAAC;AAC/C,OAAO,EAAE,YAAY,EAAE,MAAM,gBAAgB,CAAC;;AAK9C,MAAM,OAAO,kBAAkB;IAU3B,YACY,QAAoB,EACpB,KAAa,EACQ,UAAkB;QAFvC,aAAQ,GAAR,QAAQ,CAAY;QACpB,UAAK,GAAL,KAAK,CAAQ;QACQ,eAAU,GAAV,UAAU,CAAQ;QAXnC,cAAS,GAAY,IAAI,CAAC;QAC1B,oBAAe,GAAY,IAAI,CAAC;QAChC,6BAAwB,GAAY,IAAI,CAAC;QACxC,cAAS,GAAsB,IAAI,YAAY,EAAE,CAAC;QAuD3D,yBAAoB,GAAG,CAAC,OAAyC,EAAE,EAAE;YACzE,OAAO,CAAC,OAAO,CAAC,CAAC,KAAgC,EAAE,EAAE;gBACjD,IAAI,IAAI,CAAC,mBAAmB,CAAC,KAAK,CAAC,EAAE;oBACjC,IAAI,CAAC,IAAI,EAAE,CAAC;oBACZ,IAAI,IAAI,CAAC,qBAAqB,IAAI,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE;wBAC3D,IAAI,CAAC,qBAAqB,CAAC,SAAS,CAAU,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,CAAC,CAAC;qBAChF;iBACJ;YACL,CAAC,CAAC,CAAC;QACP,CAAC,CAAA;QAmCO,aAAQ,GAAG,GAAG,EAAE;YACpB,IAAI,IAAI,CAAC,SAAS,EAAE,EAAE;gBAClB,IAAI,CAAC,KAAK,CAAC,GAAG,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC;aACrC;QACL,CAAC,CAAA;IA9FG,CAAC;IAEE,QAAQ;QACX,IAAI,CAAC,gBAAgB,CAAC,IAAI,CAAC,UAAU,CAAC,IAAI,IAAI,CAAC,SAAS,CAAC;eAClD,CAAC,iBAAiB,CAAC,IAAI,CAAC,UAAU,CAAC,IAAI,CAAC,IAAI,CAAC,eAAe,IAAI,CAAC,IAAI,CAAC,oBAAoB,EAAE,CAAC,EAAE;YAClG,IAAI,CAAC,IAAI,EAAE,CAAC;SACf;IACL,CAAC;IAEM,eAAe;QAClB,IAAI,iBAAiB,CAAC,IAAI,CAAC,UAAU,CAAC,EAAE;YACpC,IAAI,IAAI,CAAC,oBAAoB,EAAE,EAAE;gBAC7B,IAAI,CAAC,4BAA4B,EAAE,CAAC;gBACpC,IAAI,IAAI,CAAC,qBAAqB,IAAI,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE;oBAC3D,IAAI,CAAC,qBAAqB,CAAC,OAAO,CAAU,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,CAAC,CAAC;iBAC9E;aACJ;iBAAM,IAAI,IAAI,CAAC,eAAe,EAAE;gBAC7B,IAAI,CAAC,kBAAkB,EAAE,CAAC;aAC7B;SACJ;IACL,CAAC;IAEM,oBAAoB;QACvB,MAAM,uBAAuB,GAAG,sBAAsB,IAAI,MAAM,CAAC;QACjE,MAAM,SAAS,GAAG,MAAM,CAAC,SAAS,CAAC,SAAS,CAAC;QAC7C,MAAM,OAAO,GAAG,SAAS,CAAC,KAAK,CAAC,gBAAgB,CAAC,CAAC;QAElD,MAAM,MAAM,GAAG,CAAC,CAAC,OAAO,IAAI,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC;QAC/C,MAAM,uBAAuB,GAAG,MAAM,IAAI,CAAC,CAAC,CAAC,OAAO,IAAI,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,GAAG,EAAE,CAAC,CAAC;QAEvF,OAAO,uBAAuB,IAAI,CAAC,CAAC,MAAM,IAAI,uBAAuB,CAAC,CAAC;IAC3E,CAAC;IAEM,WAAW;QACd,IAAI,CAAC,eAAe,EAAE,CAAC;IAC3B,CAAC;IAEO,4BAA4B;QAChC,IAAI,CAAC,CAAC,IAAI,CAAC,qBAAqB,EAAE;YAC9B,OAAO;SACV;QACD,IAAI,CAAC,qBAAqB,GAAG,IAAI,oBAAoB,CAAC,OAAO,CAAC,EAAE;YAC5D,IAAI,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QACvC,CAAC,EAAE,EAAE,CAAC,CAAC;IACX,CAAC;IAaO,mBAAmB,CAAE,KAAgC;QACzD,4EAA4E;QAC5E,qEAAqE;QACrE,IAAI,KAAK,IAAI,KAAK,CAAC,IAAI,EAAE;YACrB,OAAO,KAAK,CAAC,cAAc,IAAI,KAAK,CAAC,MAAM,KAAK,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC;SAC/E;QACD,OAAO,IAAI,CAAC,SAAS,EAAE,CAAC;IAC5B,CAAC;IAEO,IAAI;QACR,IAAI,IAAI,CAAC,wBAAwB,EAAE;YAC/B,IAAI,CAAC,eAAe,EAAE,CAAC;SAC1B;QACD,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,CAAC;IAC1B,CAAC;IAEO,kBAAkB;QACtB,IAAI,IAAI,CAAC,SAAS,EAAE,EAAE;YAClB,IAAI,CAAC,IAAI,EAAE,CAAC;YACZ,OAAO;SACV;QACD,IAAI,CAAC,KAAK,CAAC,iBAAiB,CAAC,GAAG,EAAE;YAC9B,IAAI,CAAC,mBAAmB,GAAG,SAAS,CAAC,MAAM,EAAE,QAAQ,CAAC;iBACjD,IAAI,CAAC,YAAY,CAAC,EAAE,CAAC,CAAC;iBACtB,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC;QAClC,CAAC,CAAC,CAAC;IACP,CAAC;IAEO,eAAe;QACnB,IAAI,CAAC,mBAAmB,EAAE,WAAW,EAAE,CAAC;QACxC,IAAI,CAAC,qBAAqB,EAAE,UAAU,EAAE,CAAC;IAC7C,CAAC;IAQO,SAAS;QACb,IAAI,cAAc,GAAG,IAAI,CAAC,iBAAiB,EAAE,CAAC;QAC9C,IAAI,aAAa,GAAG,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,qBAAqB,EAAE,CAAC,GAAG,GAAG,MAAM,CAAC,OAAO,CAAC;QAC7F,OAAO,aAAa,IAAI,cAAc,CAAC;IAC3C,CAAC;IAEO,iBAAiB;QACrB,iDAAiD;QACjD,OAAO,MAAM,CAAC,OAAO,GAAG,CAAC,QAAQ,CAAC,eAAe,CAAC,YAAY,IAAI,QAAQ,CAAC,IAAI,CAAC,YAAY,CAAC,CAAC;IAClG,CAAC;;gHAvHQ,kBAAkB,kEAaf,WAAW;oGAbd,kBAAkB;4FAAlB,kBAAkB;kBAH9B,SAAS;mBAAC;oBACP,QAAQ,EAAE,aAAa;iBAC1B;;0BAcQ,MAAM;2BAAC,WAAW;4CAXP,SAAS;sBAAxB,KAAK;gBACU,eAAe;sBAA9B,KAAK;gBACU,wBAAwB;sBAAvC,KAAK;gBACW,SAAS;sBAAzB,MAAM","sourcesContent":["import { isPlatformBrowser, isPlatformServer } from '@angular/common';\nimport { AfterViewInit, Directive, ElementRef, EventEmitter, Inject, Input, NgZone, OnDestroy, OnInit, Output, PLATFORM_ID } from '@angular/core';\nimport { fromEvent, Subscription } from 'rxjs';\nimport { debounceTime } from 'rxjs/operators';\n\n@Directive({\n    selector: '[deferLoad]'\n})\nexport class DeferLoadDirective implements OnInit, AfterViewInit, OnDestroy {\n\n    @Input() public preRender: boolean = true;\n    @Input() public fallbackEnabled: boolean = true;\n    @Input() public removeListenersAfterLoad: boolean = true;\n    @Output() public deferLoad: EventEmitter<any> = new EventEmitter();\n\n    private _intersectionObserver?: IntersectionObserver;\n    private _scrollSubscription?: Subscription;\n\n    constructor (\n        private _element: ElementRef,\n        private _zone: NgZone,\n        @Inject(PLATFORM_ID) private platformId: Object\n    ) { }\n\n    public ngOnInit () {\n        if ((isPlatformServer(this.platformId) && this.preRender)\n            || (isPlatformBrowser(this.platformId) && !this.fallbackEnabled && !this.hasCompatibleBrowser())) {\n            this.load();\n        }\n    }\n\n    public ngAfterViewInit () {\n        if (isPlatformBrowser(this.platformId)) {\n            if (this.hasCompatibleBrowser()) {\n                this.registerIntersectionObserver();\n                if (this._intersectionObserver && this._element.nativeElement) {\n                    this._intersectionObserver.observe(<Element>(this._element.nativeElement));\n                }\n            } else if (this.fallbackEnabled) {\n                this.addScrollListeners();\n            }\n        }\n    }\n\n    public hasCompatibleBrowser (): boolean {\n        const hasIntersectionObserver = 'IntersectionObserver' in window;\n        const userAgent = window.navigator.userAgent;\n        const matches = userAgent.match(/Edge\\/(\\d*)\\./i);\n\n        const isEdge = !!matches && matches.length > 1;\n        const isEdgeVersion16OrBetter = isEdge && (!!matches && parseInt(matches[1], 10) > 15);\n\n        return hasIntersectionObserver && (!isEdge || isEdgeVersion16OrBetter);\n    }\n\n    public ngOnDestroy () {\n        this.removeListeners();\n    }\n\n    private registerIntersectionObserver (): void {\n        if (!!this._intersectionObserver) {\n            return;\n        }\n        this._intersectionObserver = new IntersectionObserver(entries => {\n            this.checkForIntersection(entries);\n        }, {});\n    }\n\n    private checkForIntersection = (entries: Array<IntersectionObserverEntry>) => {\n        entries.forEach((entry: IntersectionObserverEntry) => {\n            if (this.checkIfIntersecting(entry)) {\n                this.load();\n                if (this._intersectionObserver && this._element.nativeElement) {\n                    this._intersectionObserver.unobserve(<Element>(this._element.nativeElement));\n                }\n            }\n        });\n    }\n\n    private checkIfIntersecting (entry: IntersectionObserverEntry) {\n        // For Samsung native browser, IO has been partially implemented whereby the\n        // callback fires, but entry object is empty. We will check manually.\n        if (entry && entry.time) {\n            return entry.isIntersecting && entry.target === this._element.nativeElement;\n        }\n        return this.isVisible();\n    }\n\n    private load (): void {\n        if (this.removeListenersAfterLoad) {\n            this.removeListeners();\n        }\n        this.deferLoad.emit();\n    }\n\n    private addScrollListeners () {\n        if (this.isVisible()) {\n            this.load();\n            return;\n        }\n        this._zone.runOutsideAngular(() => {\n            this._scrollSubscription = fromEvent(window, 'scroll')\n                .pipe(debounceTime(50))\n                .subscribe(this.onScroll);\n        });\n    }\n\n    private removeListeners () {\n        this._scrollSubscription?.unsubscribe();\n        this._intersectionObserver?.disconnect();\n    }\n\n    private onScroll = () => {\n        if (this.isVisible()) {\n            this._zone.run(() => this.load());\n        }\n    }\n\n    private isVisible () {\n        let scrollPosition = this.getScrollPosition();\n        let elementOffset = this._element.nativeElement.getBoundingClientRect().top + window.scrollY;\n        return elementOffset <= scrollPosition;\n    }\n\n    private getScrollPosition () {\n        // Getting screen size and scroll position for IE\n        return window.scrollY + (document.documentElement.clientHeight || document.body.clientHeight);\n    }\n}\n"]}