Telegram Web K with changes to work inside I2P
https://web.telegram.i2p/
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191 lines
5.2 KiB
191 lines
5.2 KiB
/* |
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* https://github.com/morethanwords/tweb |
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* Copyright (C) 2019-2021 Eduard Kuzmenko |
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* https://github.com/morethanwords/tweb/blob/master/LICENSE |
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*/ |
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import { MOUNT_CLASS_TO } from "../config/debug"; |
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import { isMobileSafari } from "../helpers/userAgent"; |
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import { logger } from "../lib/logger"; |
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import { doubleRaf } from "../helpers/schedulers"; |
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import blurActiveElement from "../helpers/dom/blurActiveElement"; |
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import { cancelEvent } from "../helpers/dom/cancelEvent"; |
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export type NavigationItem = { |
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type: 'left' | 'right' | 'im' | 'chat' | 'popup' | 'media' | 'menu' | 'esg' | 'multiselect' | 'input-helper' | 'markup' | 'global-search', |
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onPop: (canAnimate: boolean) => boolean | void, |
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onEscape?: () => boolean, |
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noHistory?: boolean, |
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}; |
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export class AppNavigationController { |
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private navigations: Array<NavigationItem> = []; |
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private id = Date.now(); |
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private manual = false; |
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private log = logger('NC'); |
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private debug = true; |
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private currentHash = window.location.hash; |
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public onHashChange: () => void; |
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constructor() { |
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let isPossibleSwipe = false; |
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window.addEventListener('popstate', (e) => { |
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this.debug && this.log('popstate', e, isPossibleSwipe); |
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if(window.location.hash !== this.currentHash) { |
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this.onHashChange && this.onHashChange(); |
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this.replaceState(); |
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return; |
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} |
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this.currentHash = window.location.hash; |
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const id: number = e.state; |
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if(id !== this.id/* && !this.navigations.length */) { |
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this.pushState(); |
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return; |
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} |
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const item = this.navigations.pop(); |
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if(!item) { |
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this.pushState(); |
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return; |
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} |
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this.manual = !isPossibleSwipe; |
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this.handleItem(item); |
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//this.pushState(); // * prevent adding forward arrow |
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}); |
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window.addEventListener('keydown', (e) => { |
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const item = this.navigations[this.navigations.length - 1]; |
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if(!item) return; |
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if(e.key === 'Escape' && (item.onEscape ? item.onEscape() : true)) { |
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cancelEvent(e); |
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this.back(); |
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} |
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}, {capture: true}); |
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if(isMobileSafari) { |
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const options = {passive: true}; |
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window.addEventListener('touchstart', (e) => { |
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if(e.touches.length > 1) return; |
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this.debug && this.log('touchstart'); |
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const detach = () => { |
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window.removeEventListener('touchend', onTouchEnd); |
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window.removeEventListener('touchmove', onTouchMove); |
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}; |
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let moved = false; |
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const onTouchMove = (e: TouchEvent) => { |
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this.debug && this.log('touchmove'); |
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if(e.touches.length > 1) { |
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detach(); |
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return; |
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} |
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moved = true; |
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}; |
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const onTouchEnd = (e: TouchEvent) => { |
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this.debug && this.log('touchend'); |
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if(e.touches.length > 1 || !moved) { |
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detach(); |
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return; |
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} |
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isPossibleSwipe = true; |
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doubleRaf().then(() => { |
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isPossibleSwipe = false; |
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}); |
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detach(); |
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}; |
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window.addEventListener('touchend', onTouchEnd, options); |
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window.addEventListener('touchmove', onTouchMove, options); |
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}, options); |
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} |
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history.scrollRestoration = 'manual'; |
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this.pushState(); // * push init state |
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} |
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private handleItem(item: NavigationItem) { |
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const good = item.onPop(!this.manual ? false : undefined); |
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this.debug && this.log('popstate, navigation:', item, this.navigations); |
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if(good === false) { |
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this.pushItem(item); |
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} else { |
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blurActiveElement(); // no better place for it |
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} |
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this.manual = false; |
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} |
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public findItemByType(type: NavigationItem['type']) { |
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for(let i = this.navigations.length - 1; i >= 0; --i) { |
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const item = this.navigations[i]; |
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if(item.type === type) { |
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return {item, index: i}; |
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} |
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} |
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} |
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public back(type?: NavigationItem['type']) { |
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if(type) { |
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const ret = this.findItemByType(type); |
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if(ret) { |
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this.manual = true; |
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// ! commented because 'popstate' event will be fired with delay |
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//if(ret.index !== (this.navigations.length - 1)) { |
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this.navigations.splice(ret.index, 1); |
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this.handleItem(ret.item); |
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return; |
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//} |
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} |
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} |
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history.back(); |
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} |
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public pushItem(item: NavigationItem) { |
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this.navigations.push(item); |
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this.debug && this.log('pushstate', item, this.navigations); |
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if(!item.noHistory) { |
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this.pushState(); |
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} |
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} |
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private pushState() { |
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this.manual = false; |
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history.pushState(this.id, ''); |
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} |
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public replaceState() { |
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history.replaceState(this.id, '', location.origin + location.pathname); |
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} |
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public removeItem(item: NavigationItem) { |
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this.navigations.findAndSplice(i => i === item); |
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} |
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public removeByType(type: NavigationItem['type'], single = false) { |
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for(let i = this.navigations.length - 1; i >= 0; --i) { |
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const item = this.navigations[i]; |
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if(item.type === type) { |
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this.navigations.splice(i, 1); |
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if(single) { |
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break; |
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} |
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} |
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} |
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} |
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} |
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const appNavigationController = new AppNavigationController(); |
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MOUNT_CLASS_TO.appNavigationController = appNavigationController; |
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export default appNavigationController;
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