Mercurial
diff .cms/lib/codemirror/src/util/dom.js @ 0:78edf6b517a0 draft
24.10
author | Coffee CMS <info@coffee-cms.ru> |
---|---|
date | Fri, 11 Oct 2024 22:40:23 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.cms/lib/codemirror/src/util/dom.js Fri Oct 11 22:40:23 2024 +0000 @@ -0,0 +1,111 @@ +import { ie, ios } from "./browser.js" + +export function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") } + +export let rmClass = function(node, cls) { + let current = node.className + let match = classTest(cls).exec(current) + if (match) { + let after = current.slice(match.index + match[0].length) + node.className = current.slice(0, match.index) + (after ? match[1] + after : "") + } +} + +export function removeChildren(e) { + for (let count = e.childNodes.length; count > 0; --count) + e.removeChild(e.firstChild) + return e +} + +export function removeChildrenAndAdd(parent, e) { + return removeChildren(parent).appendChild(e) +} + +export function elt(tag, content, className, style) { + let e = document.createElement(tag) + if (className) e.className = className + if (style) e.style.cssText = style + if (typeof content == "string") e.appendChild(document.createTextNode(content)) + else if (content) for (let i = 0; i < content.length; ++i) e.appendChild(content[i]) + return e +} +// wrapper for elt, which removes the elt from the accessibility tree +export function eltP(tag, content, className, style) { + let e = elt(tag, content, className, style) + e.setAttribute("role", "presentation") + return e +} + +export let range +if (document.createRange) range = function(node, start, end, endNode) { + let r = document.createRange() + r.setEnd(endNode || node, end) + r.setStart(node, start) + return r +} +else range = function(node, start, end) { + let r = document.body.createTextRange() + try { r.moveToElementText(node.parentNode) } + catch(e) { return r } + r.collapse(true) + r.moveEnd("character", end) + r.moveStart("character", start) + return r +} + +export function contains(parent, child) { + if (child.nodeType == 3) // Android browser always returns false when child is a textnode + child = child.parentNode + if (parent.contains) + return parent.contains(child) + do { + if (child.nodeType == 11) child = child.host + if (child == parent) return true + } while (child = child.parentNode) +} + +export function activeElt(rootNode) { + // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. + // IE < 10 will throw when accessed while the page is loading or in an iframe. + // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. + let doc = rootNode.ownerDocument || rootNode + let activeElement + try { + activeElement = rootNode.activeElement + } catch(e) { + activeElement = doc.body || null + } + while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) + activeElement = activeElement.shadowRoot.activeElement + return activeElement +} + +export function addClass(node, cls) { + let current = node.className + if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls +} +export function joinClasses(a, b) { + let as = a.split(" ") + for (let i = 0; i < as.length; i++) + if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i] + return b +} + +export let selectInput = function(node) { node.select() } +if (ios) // Mobile Safari apparently has a bug where select() is broken. + selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } +else if (ie) // Suppress mysterious IE10 errors + selectInput = function(node) { try { node.select() } catch(_e) {} } + +export function doc(cm) { return cm.display.wrapper.ownerDocument } + +export function root(cm) { + return rootNode(cm.display.wrapper) +} + +export function rootNode(element) { + // Detect modern browsers (2017+). + return element.getRootNode ? element.getRootNode() : element.ownerDocument +} + +export function win(cm) { return doc(cm).defaultView }