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/*
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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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* Originally from:
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* https://github.com/zhukov/webogram
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* Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
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* https://github.com/zhukov/webogram/blob/master/LICENSE
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*/
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import { MessageEntity } from "../layer";
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import RichTextProcessor from "../lib/richtextprocessor";
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import ListenerSetter from "./listenerSetter";
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import { isTouchSupported } from "./touchSupport";
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import { isApple, isMobile, isMobileSafari } from "./userAgent";
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import rootScope from "../lib/rootScope";
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import { MOUNT_CLASS_TO } from "../config/debug";
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import { doubleRaf } from "./schedulers";
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/* export function isInDOM(element: Element, parentNode?: HTMLElement): boolean {
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if(!element) {
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return false;
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}
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parentNode = parentNode || document.body;
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if(element === parentNode) {
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return true;
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}
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return isInDOM(element.parentNode as HTMLElement, parentNode);
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} */
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export function isInDOM(element: Element): boolean {
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return element?.isConnected;
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}
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/* export function checkDragEvent(e: any) {
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if(!e || e.target && (e.target.tagName === 'IMG' || e.target.tagName === 'A')) return false
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if(e.dataTransfer && e.dataTransfer.types) {
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for(var i = 0; i < e.dataTransfer.types.length; i++) {
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if(e.dataTransfer.types[i] === 'Files') {
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return true;
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}
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}
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} else {
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return true;
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}
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return false;
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} */
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export function cancelEvent(event: Event) {
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event = event || window.event;
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if(event) {
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// @ts-ignore
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event = event.originalEvent || event;
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try {
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if(event.stopPropagation) event.stopPropagation();
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if(event.preventDefault) event.preventDefault();
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event.returnValue = false;
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event.cancelBubble = true;
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} catch(err) {}
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}
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return false;
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}
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export function placeCaretAtEnd(el: HTMLElement) {
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if(isTouchSupported) {
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return;
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}
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el.focus();
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if(typeof window.getSelection !== "undefined" && typeof document.createRange !== "undefined") {
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var range = document.createRange();
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range.selectNodeContents(el);
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range.collapse(false);
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var sel = window.getSelection();
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sel.removeAllRanges();
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sel.addRange(range);
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// @ts-ignore
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} else if(typeof document.body.createTextRange !== "undefined") {
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// @ts-ignore
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var textRange = document.body.createTextRange();
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textRange.moveToElementText(el);
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textRange.collapse(false);
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textRange.select();
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}
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}
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/* export function getFieldSelection(field: any) {
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if(field.selectionStart) {
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return field.selectionStart;
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// @ts-ignore
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} else if(!document.selection) {
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return 0;
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}
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const c = '\x01';
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// @ts-ignore
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const sel = document.selection.createRange();
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const txt = sel.text;
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const dup = sel.duplicate();
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let len = 0;
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try {
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dup.moveToElementText(field);
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} catch(e) {
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return 0;
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}
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sel.text = txt + c;
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len = dup.text.indexOf(c);
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sel.moveStart('character', -1);
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sel.text = '';
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// if (browser.msie && len === -1) {
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// return field.value.length
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// }
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return len;
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} */
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export function getRichValue(field: HTMLElement, entities?: MessageEntity[]) {
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if(!field) {
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return '';
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}
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const lines: string[] = [];
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const line: string[] = [];
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getRichElementValue(field, lines, line, undefined, undefined, entities);
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if(line.length) {
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lines.push(line.join(''));
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}
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let value = lines.join('\n');
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value = value.replace(/\u00A0/g, ' ');
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if(entities) {
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RichTextProcessor.combineSameEntities(entities);
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}
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//console.log('getRichValue:', value, entities);
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return value;
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}
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MOUNT_CLASS_TO.getRichValue = getRichValue;
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export type MarkdownType = 'bold' | 'italic' | 'underline' | 'strikethrough' | 'monospace' | 'link';
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export type MarkdownTag = {
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match: string,
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entityName: 'messageEntityBold' | 'messageEntityUnderline' | 'messageEntityItalic' | 'messageEntityPre' | 'messageEntityStrike' | 'messageEntityTextUrl';
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};
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export const markdownTags: {[type in MarkdownType]: MarkdownTag} = {
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bold: {
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match: '[style*="font-weight"], b',
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entityName: 'messageEntityBold'
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},
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underline: {
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match: '[style*="underline"], u',
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entityName: 'messageEntityUnderline'
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},
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italic: {
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match: '[style*="italic"], i',
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entityName: 'messageEntityItalic'
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},
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monospace: {
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match: '[style*="monospace"], [face="monospace"]',
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entityName: 'messageEntityPre'
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},
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strikethrough: {
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match: '[style*="line-through"], strike',
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entityName: 'messageEntityStrike'
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},
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link: {
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match: 'A',
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entityName: 'messageEntityTextUrl'
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}
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};
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export function getRichElementValue(node: HTMLElement, lines: string[], line: string[], selNode?: Node, selOffset?: number, entities?: MessageEntity[], offset = {offset: 0}) {
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if(node.nodeType === 3) { // TEXT
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if(selNode === node) {
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const value = node.nodeValue;
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line.push(value.substr(0, selOffset) + '\x01' + value.substr(selOffset));
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} else {
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const nodeValue = node.nodeValue;
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line.push(nodeValue);
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if(entities && nodeValue.trim()) {
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if(node.parentNode) {
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const parentElement = node.parentElement;
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for(const type in markdownTags) {
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const tag = markdownTags[type as MarkdownType];
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const closest = parentElement.closest(tag.match + ', [contenteditable]');
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if(closest && closest.getAttribute('contenteditable') === null) {
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if(tag.entityName === 'messageEntityTextUrl') {
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entities.push({
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_: tag.entityName as any,
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url: (parentElement as HTMLAnchorElement).href,
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offset: offset.offset,
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length: nodeValue.length
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});
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} else {
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entities.push({
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_: tag.entityName as any,
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offset: offset.offset,
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length: nodeValue.length
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});
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}
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}
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}
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}
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}
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offset.offset += nodeValue.length;
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}
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return;
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}
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if(node.nodeType !== 1) { // NON-ELEMENT
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return;
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}
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const isSelected = (selNode === node);
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const isBlock = node.tagName === 'DIV' || node.tagName === 'P';
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if(isBlock && line.length || node.tagName === 'BR') {
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lines.push(line.join(''));
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line.splice(0, line.length);
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} else if(node.tagName === 'IMG') {
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const alt = (node as HTMLImageElement).alt;
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if(alt) {
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line.push(alt);
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offset.offset += alt.length;
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}
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}
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if(isSelected && !selOffset) {
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line.push('\x01');
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}
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let curChild = node.firstChild as HTMLElement;
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while(curChild) {
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getRichElementValue(curChild, lines, line, selNode, selOffset, entities, offset);
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curChild = curChild.nextSibling as any;
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}
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if(isSelected && selOffset) {
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line.push('\x01');
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}
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if(isBlock && line.length) {
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lines.push(line.join(''));
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line.splice(0, line.length);
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}
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}
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export function isInputEmpty(element: HTMLElement) {
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if(element.hasAttribute('contenteditable') || element.tagName !== 'INPUT') {
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/* const value = element.innerText;
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return !value.trim() && !serializeNodes(Array.from(element.childNodes)).trim(); */
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return !getRichValue(element).trim();
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} else {
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return !(element as HTMLInputElement).value.trim();
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}
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}
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/* export function serializeNodes(nodes: Node[]): string {
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return nodes.reduce((str, child: any) => {
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//console.log('childNode', str, child, typeof(child), typeof(child) === 'string', child.innerText);
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if(typeof(child) === 'object' && child.textContent) return str += child.textContent;
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if(child.innerText) return str += child.innerText;
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if(child.tagName === 'IMG' && child.classList && child.classList.contains('emoji')) return str += child.getAttribute('alt');
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return str;
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}, '');
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} */
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/* if (Config.Modes.animations &&
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typeof window.requestAnimationFrame === 'function') {
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window.onAnimationFrameCallback = function (cb) {
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return (function () {
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window.requestAnimationFrame(cb)
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})
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}
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} else {
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window.onAnimationFrameCallback = function (cb) {
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return cb
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}
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} */
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// generate a path's arc data parameter
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// http://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands
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var arcParameter = function(rx: number, ry: number, xAxisRotation: number, largeArcFlag: number, sweepFlag: number, x: number, y: number) {
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return [rx, ',', ry, ' ',
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xAxisRotation, ' ',
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largeArcFlag, ',',
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sweepFlag, ' ',
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x, ',', y ].join('');
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};
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export function generatePathData(x: number, y: number, width: number, height: number, tl: number, tr: number, br: number, bl: number) {
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const data: string[] = [];
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// start point in top-middle of the rectangle
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data.push('M' + (x + width / 2) + ',' + y);
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// next we go to the right
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data.push('H' + (x + width - tr));
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if(tr > 0) {
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// now we draw the arc in the top-right corner
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data.push('A' + arcParameter(tr, tr, 0, 0, 1, (x + width), (y + tr)));
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}
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// next we go down
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data.push('V' + (y + height - br));
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if(br > 0) {
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// now we draw the arc in the lower-right corner
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data.push('A' + arcParameter(br, br, 0, 0, 1, (x + width - br), (y + height)));
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}
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// now we go to the left
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data.push('H' + (x + bl));
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if(bl > 0) {
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// now we draw the arc in the lower-left corner
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data.push('A' + arcParameter(bl, bl, 0, 0, 1, (x + 0), (y + height - bl)));
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}
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// next we go up
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data.push('V' + (y + tl));
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if(tl > 0) {
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// now we draw the arc in the top-left corner
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data.push('A' + arcParameter(tl, tl, 0, 0, 1, (x + tl), (y + 0)));
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}
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// and we close the path
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data.push('Z');
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return data.join(' ');
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};
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MOUNT_CLASS_TO.generatePathData = generatePathData;
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export function whichChild(elem: Node) {
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if(!elem.parentNode) {
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return -1;
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}
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let i = 0;
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// @ts-ignore
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while((elem = elem.previousElementSibling) !== null) ++i;
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return i;
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};
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export function fillPropertyValue(str: string) {
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let splitted = str.split(' ');
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if(splitted.length !== 4) {
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if(!splitted[0]) splitted[0] = '0px';
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for(let i = splitted.length; i < 4; ++i) {
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splitted[i] = splitted[i % 2] || splitted[0] || '0px';
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}
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}
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return splitted;
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}
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export function calcImageInBox(imageW: number, imageH: number, boxW: number, boxH: number, noZoom = true) {
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if(imageW < boxW && imageH < boxH && noZoom) {
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return {w: imageW, h: imageH};
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}
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let boxedImageW = boxW;
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let boxedImageH = boxH;
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if((imageW / imageH) > (boxW / boxH)) {
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boxedImageH = (imageH * boxW / imageW) | 0;
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} else {
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|
boxedImageW = (imageW * boxH / imageH) | 0;
|
|
|
|
if(boxedImageW > boxW) {
|
|
|
|
boxedImageH = (boxedImageH * boxW / boxedImageW) | 0;
|
|
|
|
boxedImageW = boxW;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// if (Config.Navigator.retina) {
|
|
|
|
// imageW = Math.floor(imageW / 2)
|
|
|
|
// imageH = Math.floor(imageH / 2)
|
|
|
|
// }
|
|
|
|
|
|
|
|
if(noZoom && boxedImageW >= imageW && boxedImageH >= imageH) {
|
|
|
|
boxedImageW = imageW;
|
|
|
|
boxedImageH = imageH;
|
|
|
|
}
|
|
|
|
|
|
|
|
return {w: boxedImageW, h: boxedImageH};
|
|
|
|
}
|
|
|
|
|
|
|
|
MOUNT_CLASS_TO.calcImageInBox = calcImageInBox;
|
|
|
|
|
|
|
|
export function positionElementByIndex(element: HTMLElement, container: HTMLElement, pos: number, prevPos?: number) {
|
|
|
|
if(prevPos === undefined) {
|
|
|
|
prevPos = element.parentElement === container ? whichChild(element) : -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(prevPos === pos) {
|
|
|
|
return false;
|
|
|
|
} else if(prevPos !== -1 && prevPos < pos) { // was higher
|
|
|
|
pos += 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(container.childElementCount > pos) {
|
|
|
|
container.insertBefore(element, container.children[pos]);
|
|
|
|
} else {
|
|
|
|
container.append(element);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function cancelSelection() {
|
|
|
|
if(window.getSelection) {
|
|
|
|
if(window.getSelection().empty) { // Chrome
|
|
|
|
window.getSelection().empty();
|
|
|
|
} else if(window.getSelection().removeAllRanges) { // Firefox
|
|
|
|
window.getSelection().removeAllRanges();
|
|
|
|
}
|
|
|
|
// @ts-ignore
|
|
|
|
} else if(document.selection) { // IE?
|
|
|
|
// @ts-ignore
|
|
|
|
document.selection.empty();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//(window as any).splitStringByLength = splitStringByLength;
|
|
|
|
|
|
|
|
export function getSelectedText(): string {
|
|
|
|
if(window.getSelection) {
|
|
|
|
return window.getSelection().toString();
|
|
|
|
// @ts-ignore
|
|
|
|
} else if(document.selection) {
|
|
|
|
// @ts-ignore
|
|
|
|
return document.selection.createRange().text;
|
|
|
|
}
|
|
|
|
|
|
|
|
return '';
|
|
|
|
}
|
|
|
|
|
|
|
|
export function blurActiveElement() {
|
|
|
|
if(document.activeElement && (document.activeElement as HTMLInputElement).blur) {
|
|
|
|
(document.activeElement as HTMLInputElement).blur();
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
export const CLICK_EVENT_NAME: 'mousedown' | 'touchend' | 'click' = (isTouchSupported ? 'mousedown' : 'click') as any;
|
|
|
|
export type AttachClickOptions = AddEventListenerOptions & Partial<{listenerSetter: ListenerSetter, touchMouseDown: true}>;
|
|
|
|
export const attachClickEvent = (elem: HTMLElement, callback: (e: TouchEvent | MouseEvent) => void, options: AttachClickOptions = {}) => {
|
|
|
|
const add = options.listenerSetter ? options.listenerSetter.add.bind(options.listenerSetter, elem) : elem.addEventListener.bind(elem);
|
|
|
|
const remove = options.listenerSetter ? options.listenerSetter.removeManual.bind(options.listenerSetter, elem) : elem.removeEventListener.bind(elem);
|
|
|
|
|
|
|
|
options.touchMouseDown = true;
|
|
|
|
/* if(options.touchMouseDown && CLICK_EVENT_NAME === 'touchend') {
|
|
|
|
add('mousedown', callback, options);
|
|
|
|
} else if(CLICK_EVENT_NAME === 'touchend') {
|
|
|
|
const o = {...options, once: true};
|
|
|
|
|
|
|
|
const onTouchStart = (e: TouchEvent) => {
|
|
|
|
const onTouchMove = (e: TouchEvent) => {
|
|
|
|
remove('touchmove', onTouchMove, o);
|
|
|
|
remove('touchend', onTouchEnd, o);
|
|
|
|
};
|
|
|
|
|
|
|
|
const onTouchEnd = (e: TouchEvent) => {
|
|
|
|
remove('touchmove', onTouchMove, o);
|
|
|
|
callback(e);
|
|
|
|
if(options.once) {
|
|
|
|
remove('touchstart', onTouchStart);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
add('touchend', onTouchEnd, o);
|
|
|
|
add('touchmove', onTouchMove, o);
|
|
|
|
};
|
|
|
|
|
|
|
|
add('touchstart', onTouchStart);
|
|
|
|
} else {
|
|
|
|
add(CLICK_EVENT_NAME, callback, options);
|
|
|
|
} */
|
|
|
|
add(CLICK_EVENT_NAME, callback, options);
|
|
|
|
};
|
|
|
|
|
|
|
|
export const detachClickEvent = (elem: HTMLElement, callback: (e: TouchEvent | MouseEvent) => void, options?: AddEventListenerOptions) => {
|
|
|
|
if(CLICK_EVENT_NAME === 'touchend') {
|
|
|
|
elem.removeEventListener('touchstart', callback, options);
|
|
|
|
} else {
|
|
|
|
elem.removeEventListener(CLICK_EVENT_NAME, callback, options);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
export const getSelectedNodes = () => {
|
|
|
|
const nodes: Node[] = [];
|
|
|
|
const selection = window.getSelection();
|
|
|
|
for(let i = 0; i < selection.rangeCount; ++i) {
|
|
|
|
const range = selection.getRangeAt(i);
|
|
|
|
let {startContainer, endContainer} = range;
|
|
|
|
if(endContainer.nodeType !== 3) endContainer = endContainer.firstChild;
|
|
|
|
|
|
|
|
while(startContainer && startContainer !== endContainer) {
|
|
|
|
nodes.push(startContainer.nodeType === 3 ? startContainer : startContainer.firstChild);
|
|
|
|
startContainer = startContainer.nextSibling;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(nodes[nodes.length - 1] !== endContainer) {
|
|
|
|
nodes.push(endContainer);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// * filter null's due to <br>
|
|
|
|
return nodes.filter(node => !!node);
|
|
|
|
};
|
|
|
|
|
|
|
|
/* export const isSelectionSingle = (input: Element = document.activeElement) => {
|
|
|
|
const nodes = getSelectedNodes();
|
|
|
|
const parents = [...new Set(nodes.map(node => node.parentNode))];
|
|
|
|
const differentParents = parents.length > 1;
|
|
|
|
|
|
|
|
let single = true;
|
|
|
|
if(differentParents) {
|
|
|
|
single = false;
|
|
|
|
} else {
|
|
|
|
const node = nodes[0];
|
|
|
|
if(node && node.parentNode !== input && node.parentNode.parentNode !== input) {
|
|
|
|
single = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return single;
|
|
|
|
}; */
|
|
|
|
|
|
|
|
export const handleScrollSideEvent = (elem: HTMLElement, side: 'top' | 'bottom', callback: () => void, listenerSetter: ListenerSetter) => {
|
|
|
|
if(isTouchSupported) {
|
|
|
|
let lastY: number;
|
|
|
|
const options = {passive: true};
|
|
|
|
listenerSetter.add(elem, 'touchstart', (e) => {
|
|
|
|
if(e.touches.length > 1) {
|
|
|
|
onTouchEnd();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
lastY = e.touches[0].clientY;
|
|
|
|
|
|
|
|
listenerSetter.add(elem, 'touchmove', onTouchMove, options);
|
|
|
|
listenerSetter.add(elem, 'touchend', onTouchEnd, options);
|
|
|
|
}, options);
|
|
|
|
|
|
|
|
const onTouchMove = (e: TouchEvent) => {
|
|
|
|
const clientY = e.touches[0].clientY;
|
|
|
|
|
|
|
|
const isDown = clientY < lastY;
|
|
|
|
if(side === 'bottom' && isDown) callback();
|
|
|
|
else if(side === 'top' && !isDown) callback();
|
|
|
|
lastY = clientY;
|
|
|
|
//alert('isDown: ' + !!isDown);
|
|
|
|
};
|
|
|
|
|
|
|
|
const onTouchEnd = () => {
|
|
|
|
listenerSetter.removeManual(elem, 'touchmove', onTouchMove, options);
|
|
|
|
listenerSetter.removeManual(elem, 'touchend', onTouchEnd, options);
|
|
|
|
};
|
|
|
|
} else {
|
|
|
|
listenerSetter.add(elem, 'wheel', (e) => {
|
|
|
|
const isDown = e.deltaY > 0;
|
|
|
|
//this.log('wheel', e, isDown);
|
|
|
|
if(side === 'bottom' && isDown) callback();
|
|
|
|
else if(side === 'top' && !isDown) callback();
|
|
|
|
}, {passive: true});
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/* export function radiosHandleChange(inputs: HTMLInputElement[], onChange: (value: string) => void) {
|
|
|
|
inputs.forEach(input => {
|
|
|
|
input.addEventListener('change', () => {
|
|
|
|
if(input.checked) {
|
|
|
|
onChange(input.value);
|
|
|
|
}
|
|
|
|
});
|
|
|
|
});
|
|
|
|
} */
|
|
|
|
|
|
|
|
export function isSendShortcutPressed(e: KeyboardEvent) {
|
|
|
|
if(e.key === 'Enter' && !isMobile && !e.isComposing) {
|
|
|
|
/* if(e.ctrlKey || e.metaKey) {
|
|
|
|
this.messageInput.innerHTML += '<br>';
|
|
|
|
placeCaretAtEnd(this.message)
|
|
|
|
return;
|
|
|
|
} */
|
|
|
|
|
|
|
|
if(rootScope.settings.sendShortcut === 'enter') {
|
|
|
|
if(e.shiftKey || e.ctrlKey || e.metaKey) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
} else {
|
|
|
|
const secondaryKey = isApple ? e.metaKey : e.ctrlKey;
|
|
|
|
if(e.shiftKey || (isApple ? e.ctrlKey : e.metaKey)) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(secondaryKey) {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function reflowScrollableElement(element: HTMLElement) {
|
|
|
|
element.style.display = 'none';
|
|
|
|
void element.offsetLeft; // reflow
|
|
|
|
element.style.display = '';
|
|
|
|
}
|
|
|
|
|
|
|
|
export function isSelectionEmpty(selection = window.getSelection()) {
|
|
|
|
if(!selection || !selection.rangeCount) {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
const selectionRange = selection.getRangeAt(0);
|
|
|
|
if(!selectionRange.toString() || !selectionRange.START_TO_END) {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function disableTransition(elements: HTMLElement[]) {
|
|
|
|
elements.forEach(el => el.classList.add('no-transition'));
|
|
|
|
|
|
|
|
doubleRaf().then(() => {
|
|
|
|
elements.forEach(el => el.classList.remove('no-transition'));
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
export function toggleDisability(elements: HTMLElement[], disable: boolean) {
|
|
|
|
if(disable) {
|
|
|
|
elements.forEach(el => el.setAttribute('disabled', 'true'));
|
|
|
|
} else {
|
|
|
|
elements.forEach(el => el.removeAttribute('disabled'));
|
|
|
|
}
|
|
|
|
|
|
|
|
return () => toggleDisability(elements, !disable);
|
|
|
|
}
|
|
|
|
|
|
|
|
export function canFocus(isFirstInput: boolean) {
|
|
|
|
return !isMobileSafari || !isFirstInput;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function htmlToDocumentFragment(html: string) {
|
|
|
|
var template = document.createElement('template');
|
|
|
|
html = html.trim(); // Never return a text node of whitespace as the result
|
|
|
|
template.innerHTML = html;
|
|
|
|
return template.content;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function htmlToSpan(html: string) {
|
|
|
|
const span = document.createElement('span');
|
|
|
|
span.innerHTML = html;
|
|
|
|
return span;
|
|
|
|
}
|
|
|
|
|
|
|
|
export function replaceContent(elem: HTMLElement, node: string | Node) {
|
|
|
|
// * children.length doesn't count text nodes
|
|
|
|
const firstChild = elem.firstChild;
|
|
|
|
if(firstChild) {
|
|
|
|
if(elem.lastChild === firstChild) {
|
|
|
|
firstChild.replaceWith(node);
|
|
|
|
} else {
|
|
|
|
elem.textContent = '';
|
|
|
|
elem.append(node);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
elem.append(node);
|
|
|
|
}
|
|
|
|
}
|