Telegram Web K with changes to work inside I2P
https://web.telegram.i2p/
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354 lines
10 KiB
354 lines
10 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 cancelEvent from '../helpers/dom/cancelEvent'; |
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import simulateEvent from '../helpers/dom/dispatchEvent'; |
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import documentFragmentToHTML from '../helpers/dom/documentFragmentToHTML'; |
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import findUpAttribute from '../helpers/dom/findUpAttribute'; |
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import getRichValue from '../helpers/dom/getRichValue'; |
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import isInputEmpty from '../helpers/dom/isInputEmpty'; |
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import selectElementContents from '../helpers/dom/selectElementContents'; |
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import setInnerHTML from '../helpers/dom/setInnerHTML'; |
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import {MessageEntity} from '../layer'; |
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import {i18n, LangPackKey, _i18n} from '../lib/langPack'; |
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import mergeEntities from '../lib/richTextProcessor/mergeEntities'; |
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import parseEntities from '../lib/richTextProcessor/parseEntities'; |
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import wrapDraftText from '../lib/richTextProcessor/wrapDraftText'; |
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let init = () => { |
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document.addEventListener('paste', (e) => { |
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const input = findUpAttribute(e.target, 'contenteditable="true"'); |
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if(!input) { |
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return; |
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} |
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const noLinebreaks = !!input.dataset.noLinebreaks; |
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e.preventDefault(); |
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let text: string, entities: MessageEntity[]; |
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// @ts-ignore |
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let plainText: string = (e.originalEvent || e).clipboardData.getData('text/plain'); |
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let usePlainText = true; |
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// @ts-ignore |
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let html: string = (e.originalEvent || e).clipboardData.getData('text/html'); |
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const filterEntity = (e: MessageEntity) => e._ === 'messageEntityEmoji' || (e._ === 'messageEntityLinebreak' && !noLinebreaks); |
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if(noLinebreaks) { |
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const regExp = /[\r\n]/g; |
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plainText = plainText.replace(regExp, ''); |
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html = html.replace(regExp, ''); |
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} |
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if(html.trim()) { |
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html = html.replace(/<style([\s\S]*)<\/style>/, ''); |
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html = html.replace(/<!--([\s\S]*)-->/, ''); |
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const match = html.match(/<body>([\s\S]*)<\/body>/); |
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if(match) { |
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html = match[1].trim(); |
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} |
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const span: HTMLElement = document.createElement('span'); |
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span.innerHTML = html; |
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let curChild = span.firstChild; |
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while(curChild) { // * fix whitespace between elements like <p>asd</p>\n<p>zxc</p> |
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const nextSibling = curChild.nextSibling; |
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if(curChild.nodeType === 3) { |
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if(!curChild.nodeValue.trim()) { |
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curChild.remove(); |
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} |
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} |
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curChild = nextSibling; |
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} |
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const richValue = getRichValue(span, true); |
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if(richValue.value.replace(/\s/g, '').length === plainText.replace(/\s/g, '').length) { |
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text = richValue.value; |
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entities = richValue.entities; |
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usePlainText = false; |
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let entities2 = parseEntities(text); |
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entities2 = entities2.filter(filterEntity); |
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mergeEntities(entities, entities2); |
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} |
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} |
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if(usePlainText) { |
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text = plainText; |
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entities = parseEntities(text); |
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entities = entities.filter(filterEntity); |
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} |
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const fragment = wrapDraftText(text, {entities}); |
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text = documentFragmentToHTML(fragment); |
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window.document.execCommand('insertHTML', false, text); |
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}); |
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init = null; |
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}; |
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// ! it doesn't respect symbols other than strongs |
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/* const checkAndSetRTL = (input: HTMLElement) => { |
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//const isEmpty = isInputEmpty(input); |
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//console.log('input', isEmpty); |
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//const char = [...getRichValue(input)][0]; |
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const char = (input instanceof HTMLInputElement ? input.value : input.innerText)[0]; |
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let direction = 'ltr'; |
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if(char && checkRTL(char)) { |
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direction = 'rtl'; |
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} |
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//console.log('RTL', direction, char); |
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input.style.direction = direction; |
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}; */ |
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export enum InputState { |
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Neutral = 0, |
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Valid = 1, |
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Error = 2 |
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}; |
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export type InputFieldOptions = { |
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placeholder?: LangPackKey, |
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label?: LangPackKey, |
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labelOptions?: any[], |
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labelText?: string | DocumentFragment, |
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name?: string, |
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maxLength?: number, |
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showLengthOn?: number, |
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plainText?: true, |
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required?: boolean, |
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canBeEdited?: boolean, |
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validate?: () => boolean, |
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inputMode?: 'tel' | 'numeric', |
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withLinebreaks?: boolean, |
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autocomplete?: string |
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}; |
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export default class InputField { |
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public container: HTMLElement; |
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public input: HTMLElement; |
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public label: HTMLLabelElement; |
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public originalValue: string; |
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public required: boolean; |
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public validate: () => boolean; |
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constructor(public options: InputFieldOptions = {}) { |
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this.container = document.createElement('div'); |
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this.container.classList.add('input-field'); |
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this.required = options.required; |
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this.validate = options.validate; |
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if(options.maxLength !== undefined && options.showLengthOn === undefined) { |
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options.showLengthOn = Math.min(40, Math.round(options.maxLength / 3)); |
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} |
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const {placeholder, maxLength, showLengthOn, name, plainText, canBeEdited = true, autocomplete} = options; |
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const label = options.label || options.labelText; |
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const onInputCallbacks: Array<() => void> = []; |
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let input: HTMLElement; |
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if(!plainText) { |
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if(init) { |
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init(); |
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} |
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this.container.innerHTML = ` |
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<div contenteditable="${String(!!canBeEdited)}" class="input-field-input"></div> |
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`; |
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input = this.container.firstElementChild as HTMLElement; |
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// const observer = new MutationObserver(() => { |
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// //checkAndSetRTL(input); |
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// if(processInput) { |
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// processInput(); |
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// } |
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// }); |
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onInputCallbacks.push(() => { |
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// * because if delete all characters there will br left |
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if(isInputEmpty(input)) { |
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input.textContent = ''; |
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} |
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}); |
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// ! childList for paste first symbol |
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// observer.observe(input, {characterData: true, childList: true, subtree: true}); |
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} else { |
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this.container.innerHTML = ` |
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<input type="text" ${name ? `name="${name}"` : ''} autocomplete="${autocomplete ?? 'off'}" ${label ? 'required=""' : ''} class="input-field-input"> |
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`; |
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input = this.container.firstElementChild as HTMLElement; |
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// input.addEventListener('input', () => checkAndSetRTL(input)); |
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} |
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input.setAttribute('dir', 'auto'); |
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if(options.inputMode) { |
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input.inputMode = options.inputMode; |
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} |
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if(placeholder) { |
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_i18n(input, placeholder, undefined, 'placeholder'); |
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} |
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if(label || placeholder) { |
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const border = document.createElement('div'); |
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border.classList.add('input-field-border'); |
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this.container.append(border); |
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} |
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if(label) { |
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this.label = document.createElement('label'); |
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this.setLabel(); |
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this.container.append(this.label); |
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} |
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if(maxLength) { |
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const labelEl = this.container.lastElementChild as HTMLLabelElement; |
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let showingLength = false; |
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const onInput = () => { |
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const wasError = input.classList.contains('error'); |
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// * https://stackoverflow.com/a/54369605 #2 to count emoji as 1 symbol |
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const inputLength = plainText ? (input as HTMLInputElement).value.length : [...getRichValue(input, false).value].length; |
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const diff = maxLength - inputLength; |
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const isError = diff < 0; |
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input.classList.toggle('error', isError); |
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// this.onLengthChange && this.onLengthChange(inputLength, isError); |
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if(isError || diff <= showLengthOn) { |
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this.setLabel(); |
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labelEl.append(` (${maxLength - inputLength})`); |
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if(!showingLength) showingLength = true; |
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} else if((wasError && !isError) || showingLength) { |
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this.setLabel(); |
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showingLength = false; |
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} |
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}; |
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onInputCallbacks.push(onInput); |
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} |
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const noLinebreaks = !options.withLinebreaks; |
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if(noLinebreaks && !plainText) { |
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input.dataset.noLinebreaks = '1'; |
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input.addEventListener('keypress', (e) => { |
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if(e.key === 'Enter') { |
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e.preventDefault(); |
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return false; |
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} |
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}); |
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} |
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if(onInputCallbacks.length) { |
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input.addEventListener('input', () => { |
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onInputCallbacks.forEach((callback) => callback()); |
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}); |
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} |
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this.input = input; |
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} |
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public select() { |
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if(!this.value) { // * avoid selecting whole empty field on iOS devices |
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return; |
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} |
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if(this.options.plainText) { |
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(this.input as HTMLInputElement).select(); // * select text |
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} else { |
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selectElementContents(this.input); |
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} |
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} |
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public setLabel() { |
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this.label.textContent = ''; |
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if(this.options.labelText) { |
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setInnerHTML(this.label, this.options.labelText); |
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} else { |
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this.label.append(i18n(this.options.label, this.options.labelOptions)); |
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} |
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} |
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get value() { |
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return this.options.plainText ? (this.input as HTMLInputElement).value : getRichValue(this.input, false).value; |
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// return getRichValue(this.input); |
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} |
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set value(value: string) { |
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this.setValueSilently(value, true); |
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simulateEvent(this.input, 'input'); |
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} |
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public setValueSilently(value: string, fromSet?: boolean) { |
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if(this.options.plainText) { |
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(this.input as HTMLInputElement).value = value; |
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} else { |
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this.input.innerHTML = value; |
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} |
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} |
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public isChanged() { |
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return this.value !== this.originalValue; |
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} |
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public isValid() { |
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return !this.input.classList.contains('error') && |
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(!this.validate || this.validate()) && |
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(!this.required || !isInputEmpty(this.input)); |
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} |
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public isValidToChange() { |
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return this.isValid() && this.isChanged(); |
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} |
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public setDraftValue(value = '', silent?: boolean) { |
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if(!this.options.plainText) { |
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value = documentFragmentToHTML(wrapDraftText(value)); |
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} |
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if(silent) { |
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this.setValueSilently(value, false); |
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} else { |
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this.value = value; |
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} |
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} |
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public setOriginalValue(value: InputField['originalValue'] = '', silent?: boolean) { |
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this.originalValue = value; |
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this.setDraftValue(value, silent); |
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} |
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public setState(state: InputState, label?: LangPackKey) { |
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if(label) { |
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this.label.textContent = ''; |
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this.label.append(i18n(label, this.options.labelOptions)); |
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} else { |
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this.setLabel(); |
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} |
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this.input.classList.toggle('error', !!(state & InputState.Error)); |
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this.input.classList.toggle('valid', !!(state & InputState.Valid)); |
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} |
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public setError(label?: LangPackKey) { |
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this.setState(InputState.Error, label); |
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} |
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}
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