import {HtmlUtils} from "./HtmlUtils"; import {Subject} from "rxjs"; import {iframeListener} from "../Api/IframeListener"; enum iframeStates { closed = 1, loading, // loading an iframe can be slow, so we show some placeholder until it is ready opened, } const cowebsiteDivId = 'cowebsite'; // the id of the whole container. const cowebsiteMainDomId = 'cowebsite-main'; // the id of the parent div of the iframe. const cowebsiteAsideDomId = 'cowebsite-aside'; // the id of the parent div of the iframe. const cowebsiteCloseButtonId = 'cowebsite-close'; const cowebsiteFullScreenButtonId = 'cowebsite-fullscreen'; const cowebsiteOpenFullScreenImageId = 'cowebsite-fullscreen-open'; const cowebsiteCloseFullScreenImageId = 'cowebsite-fullscreen-close'; const animationTime = 500; //time used by the css transitions, in ms. class CoWebsiteManager { private opened: iframeStates = iframeStates.closed; private _onResize: Subject = new Subject(); public onResize = this._onResize.asObservable(); /** * Quickly going in and out of an iframe trigger can create conflicts between the iframe states. * So we use this promise to queue up every cowebsite state transition */ private currentOperationPromise: Promise = Promise.resolve(); private cowebsiteDiv: HTMLDivElement; private resizing: boolean = false; private cowebsiteMainDom: HTMLDivElement; private cowebsiteAsideDom: HTMLDivElement; get width(): number { return this.cowebsiteDiv.clientWidth; } set width(width: number) { this.cowebsiteDiv.style.width = width+'px'; } get height(): number { return this.cowebsiteDiv.clientHeight; } set height(height: number) { this.cowebsiteDiv.style.height = height+'px'; } get verticalMode(): boolean { return window.innerWidth < window.innerHeight; } get isFullScreen(): boolean { return this.verticalMode ? this.height === window.innerHeight : this.width === window.innerWidth; } constructor() { this.cowebsiteDiv = HtmlUtils.getElementByIdOrFail(cowebsiteDivId); this.cowebsiteMainDom = HtmlUtils.getElementByIdOrFail(cowebsiteMainDomId); this.cowebsiteAsideDom = HtmlUtils.getElementByIdOrFail(cowebsiteAsideDomId); this.initResizeListeners(); HtmlUtils.getElementByIdOrFail(cowebsiteCloseButtonId).addEventListener('click', () => { this.closeCoWebsite(); }); HtmlUtils.getElementByIdOrFail(cowebsiteFullScreenButtonId).addEventListener('click', () => { this.fullscreen(); }); } private initResizeListeners() { const movecallback = (event:MouseEvent) => { this.verticalMode ? this.height += event.movementY / this.getDevicePixelRatio() : this.width -= event.movementX / this.getDevicePixelRatio(); this.fire(); } this.cowebsiteAsideDom.addEventListener('mousedown', (event) => { this.resizing = true; this.getIframeDom().style.display = 'none'; document.addEventListener('mousemove', movecallback); }); document.addEventListener('mouseup', (event) => { if (!this.resizing) return; document.removeEventListener('mousemove', movecallback); this.getIframeDom().style.display = 'block'; this.resizing = false; }); } private getDevicePixelRatio(): number { //on chrome engines, movementX and movementY return global screens coordinates while other browser return pixels //so on chrome-based browser we need to adjust using 'devicePixelRatio' return window.navigator.userAgent.includes('Firefox') ? 1 : window.devicePixelRatio; } private close(): void { this.cowebsiteDiv.classList.remove('loaded'); //edit the css class to trigger the transition this.cowebsiteDiv.classList.add('hidden'); this.opened = iframeStates.closed; this.resetStyle(); } private load(): void { this.cowebsiteDiv.classList.remove('hidden'); //edit the css class to trigger the transition this.cowebsiteDiv.classList.add('loading'); this.opened = iframeStates.loading; } private open(): void { this.cowebsiteDiv.classList.remove('loading', 'hidden'); //edit the css class to trigger the transition this.opened = iframeStates.opened; this.resetStyle(); } public resetStyle() { this.cowebsiteDiv.style.width = ''; this.cowebsiteDiv.style.height = ''; } private getIframeDom(): HTMLIFrameElement { const iframe = HtmlUtils.getElementByIdOrFail(cowebsiteDivId).querySelector('iframe'); if (!iframe) throw new Error('Could not find iframe!'); return iframe; } public loadCoWebsite(url: string, base: string, allowApi?: boolean, allowPolicy?: string): void { this.load(); this.cowebsiteMainDom.innerHTML = ``; const iframe = document.createElement('iframe'); iframe.id = 'cowebsite-iframe'; iframe.src = (new URL(url, base)).toString(); if (allowPolicy) { iframe.allow = allowPolicy; } const onloadPromise = new Promise((resolve) => { iframe.onload = () => resolve(); }); if (allowApi) { iframeListener.registerIframe(iframe); } this.cowebsiteMainDom.appendChild(iframe); const onTimeoutPromise = new Promise((resolve) => { setTimeout(() => resolve(), 2000); }); this.currentOperationPromise = this.currentOperationPromise.then(() =>Promise.race([onloadPromise, onTimeoutPromise])).then(() => { this.open(); setTimeout(() => { this.fire(); }, animationTime) }).catch(() => this.closeCoWebsite()); } /** * Just like loadCoWebsite but the div can be filled by the user. */ public insertCoWebsite(callback: (cowebsite: HTMLDivElement) => Promise): void { this.load(); this.cowebsiteMainDom.innerHTML = ``; this.currentOperationPromise = this.currentOperationPromise.then(() => callback(this.cowebsiteMainDom)).then(() => { this.open(); setTimeout(() => { this.fire(); }, animationTime); }).catch(() => this.closeCoWebsite()); } public closeCoWebsite(): Promise { this.currentOperationPromise = this.currentOperationPromise.then(() => new Promise((resolve, reject) => { if(this.opened === iframeStates.closed) resolve(); //this method may be called twice, in case of iframe error for example this.close(); this.fire(); const iframe = this.cowebsiteDiv.querySelector('iframe'); if (iframe) { iframeListener.unregisterIframe(iframe); } setTimeout(() => { this.cowebsiteMainDom.innerHTML = ``; HtmlUtils.getElementByIdOrFail(cowebsiteCloseButtonId).blur(); resolve(); }, animationTime) })); return this.currentOperationPromise; } public getGameSize(): {width: number, height: number} { if (this.opened !== iframeStates.opened) { return { width: window.innerWidth, height: window.innerHeight } } if (!this.verticalMode) { return { width: window.innerWidth - this.width, height: window.innerHeight } } else { return { width: window.innerWidth, height: window.innerHeight - this.height, } } } private fire(): void { this._onResize.next(); } private fullscreen(): void { if (this.isFullScreen) { this.resetStyle(); this.fire(); //we don't trigger a resize of the phaser game since it won't be visible anyway. HtmlUtils.getElementByIdOrFail(cowebsiteOpenFullScreenImageId).style.display = 'inline'; HtmlUtils.getElementByIdOrFail(cowebsiteCloseFullScreenImageId).style.display = 'none'; } else { this.verticalMode ? this.height = window.innerHeight : this.width = window.innerWidth; //we don't trigger a resize of the phaser game since it won't be visible anyway. HtmlUtils.getElementByIdOrFail(cowebsiteOpenFullScreenImageId).style.display = 'none'; HtmlUtils.getElementByIdOrFail(cowebsiteCloseFullScreenImageId).style.display = 'inline'; } } } export const coWebsiteManager = new CoWebsiteManager();