@halloverden/ngx-zendesk-web-widget
Version:
Angular wrapper for the Zendesk Web Widget v1 (classic)
134 lines • 18.1 kB
JavaScript
import { Inject, Injectable } from '@angular/core';
import { firstValueFrom, of, Subject } from 'rxjs';
import { DOCUMENT } from '@angular/common';
import * as i0 from "@angular/core";
import * as i1 from "./ngx-zendesk-web-widget.config";
import * as i2 from "./window.service";
export class NgxZendeskWebWidgetService {
constructor(config, windowService, _document) {
this.config = config;
this.windowService = windowService;
this._document = _document;
this._initialized = false;
this._verifyConfig();
if (!this.config.lazyLoadZendeskScripts) {
this.init().then(() => {
// noop
});
}
}
init() {
if (!this.windowService.get()) {
// noop
console.warn('NgxZendeskWebWidgetService.init(): Tried initializing Zendesk Web Widget, but no browser window was found.');
return firstValueFrom(of(false));
}
const w = this.windowService.get();
this._window = w;
let documentDomain = this._document.domain;
const config = this.config;
const injectionElement = this.getInjectionElement();
const iFrameElement = this.buildIframeElement();
const scriptElement = this.buildScriptElement();
w.zEmbed ||
(function (e, t) {
let args = [];
w.zEmbed = function () {
args.push(arguments);
};
w.zE = w.zE || w.zEmbed;
w.zESettings = config.zESettings;
iFrameElement.addEventListener('load', (ev) => {
const iframeElementFromEvent = ev.target;
if (iframeElementFromEvent instanceof HTMLIFrameElement) {
const iframeDocumentInstance = iframeElementFromEvent.contentDocument;
const iframeWindowInstance = iframeElementFromEvent.contentWindow;
let i = setInterval(() => {
if (iframeWindowInstance?.document.body &&
iframeDocumentInstance) {
clearInterval(i);
iframeDocumentInstance.domain = documentDomain;
iframeDocumentInstance.t = new Date();
iframeDocumentInstance.zendeskHost = config.accountUrl;
iframeDocumentInstance.zEQueue = args;
iframeDocumentInstance.body.appendChild(scriptElement);
}
});
}
});
setTimeout(() => {
injectionElement.appendChild(iFrameElement);
});
})();
return this.finishLoading();
}
getInjectionElement() {
let elements = this._document.getElementsByTagName(this.config.injectionTag);
if (elements.length === 0) {
throw new Error('No element found matching injectionTag from config');
}
return elements[0];
}
finishLoading() {
const o = new Subject();
const timeout = setTimeout(() => {
this._initialized = false;
o.next(false);
o.complete();
}, this.config.timeout || 30000);
this._window.zE(() => {
clearTimeout(timeout);
this._zE = this._window.zE;
this._initialized = true;
this.config.callback(this);
o.next(true);
o.complete();
});
return firstValueFrom(o);
}
buildIframeElement() {
const iframe = this._document.createElement('iframe');
iframe.src = 'javascript:false';
iframe.title = 'Zendesk Web Widget';
iframe.style.cssText = 'display: none';
return iframe;
}
buildScriptElement() {
const script = this._document.createElement('script');
script.type = 'text/javascript';
script.id =
'be-sure-not-to-set-the-id-to-ze-snippet-as-that-changes-the-behavior-of-the-snippet';
script.src = 'https://static.zdassets.com/ekr/snippet.js';
script.async = true;
return script;
}
_verifyConfig() {
if (!this.config.accountUrl) {
throw new Error('NgxZendeskWebWidgetService: NgxZendeskWebWidgetConfig is missing accountUrl.');
}
}
get isInitialized() {
return this._initialized;
}
get zE() {
return this._zE;
}
commandWebWidget(command, options) {
this.zE('webWidget', command, options);
}
onWebWidgetEvent(eventName, handler) {
this.zE('webWidget:on', eventName, handler);
}
}
NgxZendeskWebWidgetService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.3", ngImport: i0, type: NgxZendeskWebWidgetService, deps: [{ token: i1.NgxZendeskWebWidgetConfig }, { token: i2.WindowService }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });
NgxZendeskWebWidgetService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "14.2.3", ngImport: i0, type: NgxZendeskWebWidgetService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.2.3", ngImport: i0, type: NgxZendeskWebWidgetService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: function () { return [{ type: i1.NgxZendeskWebWidgetConfig }, { type: i2.WindowService }, { type: Document, decorators: [{
type: Inject,
args: [DOCUMENT]
}] }]; } });
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{ Inject, Injectable } from '@angular/core';\nimport { NgxZendeskWebWidgetConfig } from './ngx-zendesk-web-widget.config';\nimport { WindowService } from './window.service';\nimport { firstValueFrom, of, Subject } from 'rxjs';\nimport { DOCUMENT } from '@angular/common';\nimport { NgxZendeskWebWidgetZeInstanceInterface } from './ngx-zendesk-web-widget-ze-instance.interface';\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class NgxZendeskWebWidgetService {\n  private _initialized = false;\n  private _window!: Window;\n  private _zE!: NgxZendeskWebWidgetZeInstanceInterface;\n\n  constructor(\n    private config: NgxZendeskWebWidgetConfig,\n    private windowService: WindowService,\n    @Inject(DOCUMENT) private _document: Document\n  ) {\n    this._verifyConfig();\n\n    if (!this.config.lazyLoadZendeskScripts) {\n      this.init().then(() => {\n        // noop\n      });\n    }\n  }\n\n  public init(): Promise<boolean> {\n    if (!this.windowService.get()) {\n      // noop\n      console.warn(\n        'NgxZendeskWebWidgetService.init(): Tried initializing Zendesk Web Widget, but no browser window was found.'\n      );\n      return firstValueFrom(of(false));\n    }\n\n    const w = this.windowService.get();\n    this._window = w!;\n    let documentDomain = this._document.domain;\n    const config = this.config;\n    const injectionElement = this.getInjectionElement();\n    const iFrameElement = this.buildIframeElement();\n    const scriptElement = this.buildScriptElement();\n\n    (w! as any).zEmbed ||\n      (function (e?, t?) {\n        let args: any[] = [];\n        (w! as any).zEmbed = function () {\n          args.push(arguments);\n        };\n        (w! as any).zE = (w! as any).zE || (w! as any).zEmbed;\n        (w! as any).zESettings = config.zESettings;\n\n        iFrameElement.addEventListener('load', (ev) => {\n          const iframeElementFromEvent = ev.target;\n          if (iframeElementFromEvent instanceof HTMLIFrameElement) {\n            const iframeDocumentInstance =\n              iframeElementFromEvent.contentDocument;\n            const iframeWindowInstance = iframeElementFromEvent.contentWindow;\n\n            let i = setInterval(() => {\n              if (\n                iframeWindowInstance?.document.body &&\n                iframeDocumentInstance\n              ) {\n                clearInterval(i);\n\n                iframeDocumentInstance.domain = documentDomain;\n                (iframeDocumentInstance as any).t = new Date();\n                (iframeDocumentInstance as any).zendeskHost = config.accountUrl;\n                (iframeDocumentInstance as any).zEQueue = args;\n\n                iframeDocumentInstance.body.appendChild(scriptElement);\n              }\n            });\n          }\n        });\n\n        setTimeout(() => {\n          injectionElement.appendChild(iFrameElement);\n        });\n      })();\n\n    return this.finishLoading();\n  }\n\n  private getInjectionElement(): Element {\n    let elements = this._document.getElementsByTagName(\n      this.config.injectionTag\n    );\n    if (elements.length === 0) {\n      throw new Error('No element found matching injectionTag from config');\n    }\n\n    return elements[0];\n  }\n\n  private finishLoading(): Promise<boolean> {\n    const o = new Subject<boolean>();\n\n    const timeout = setTimeout(() => {\n      this._initialized = false;\n      o.next(false);\n      o.complete();\n    }, this.config.timeout || 30000);\n\n    (this._window as any).zE(() => {\n      clearTimeout(timeout);\n\n      this._zE = (this._window as any).zE;\n      this._initialized = true;\n\n      this.config.callback(this);\n\n      o.next(true);\n      o.complete();\n    });\n\n    return firstValueFrom(o);\n  }\n\n  private buildIframeElement(): HTMLIFrameElement {\n    const iframe = this._document.createElement('iframe');\n    iframe.src = 'javascript:false';\n    iframe.title = 'Zendesk Web Widget';\n    iframe.style.cssText = 'display: none';\n\n    return iframe;\n  }\n\n  private buildScriptElement(): HTMLScriptElement {\n    const script = this._document.createElement('script');\n\n    script.type = 'text/javascript';\n    script.id =\n      'be-sure-not-to-set-the-id-to-ze-snippet-as-that-changes-the-behavior-of-the-snippet';\n    script.src = 'https://static.zdassets.com/ekr/snippet.js';\n    script.async = true;\n\n    return script;\n  }\n\n  private _verifyConfig(): void {\n    if (!this.config.accountUrl) {\n      throw new Error(\n        'NgxZendeskWebWidgetService: NgxZendeskWebWidgetConfig is missing accountUrl.'\n      );\n    }\n  }\n\n  get isInitialized(): boolean {\n    return this._initialized;\n  }\n\n  get zE(): NgxZendeskWebWidgetZeInstanceInterface {\n    return this._zE;\n  }\n\n  commandWebWidget(command: string, options?: any): void {\n    this.zE('webWidget', command, options);\n  }\n\n  onWebWidgetEvent(eventName: string, handler: (event?: any) => void) {\n    this.zE('webWidget:on', eventName, handler);\n  }\n}\n"]}