63 lines
1.8 KiB
TypeScript
63 lines
1.8 KiB
TypeScript
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import { Editor } from 'editor/editor'
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export function moveChildren (from: Element, to: Element, toRef: Node | null) {
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while (from.firstChild) to.insertBefore(from.firstChild, toRef)
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}
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export function isDirectChild (node: Node, supposedChild: Node): boolean {
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for (const child of node.childNodes) {
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if (child == supposedChild) return true
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}
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return false
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}
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export function safeGetSelection (editor: Editor): Selection | null {
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const sel = window.getSelection()
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if (!sel) return null
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// XXX: no damos la selección si esta fuera o _es_ el contentEl, ¿quizás
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// deberíamos mostrar un error?
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if (
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!editor.contentEl.contains(sel.anchorNode)
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|| !editor.contentEl.contains(sel.focusNode)
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|| sel.anchorNode == editor.contentEl
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|| sel.focusNode == editor.contentEl
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) return null
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return sel
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}
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export function safeGetRangeAt (selection: Selection, num = 0): Range | null {
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try {
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return selection.getRangeAt(num)
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} catch (error) {
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return null
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}
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}
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interface SplitNode {
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range: Range,
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node: Node,
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}
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export function splitNode (node: Element, range: Range): [SplitNode, SplitNode] {
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const [left, right] = [
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{ range: document.createRange(), node: node.cloneNode(false) },
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{ range: document.createRange(), node: node.cloneNode(false) },
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]
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if (node.firstChild) left.range.setStartBefore(node.firstChild)
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left.range.setEnd(range.startContainer, range.startOffset)
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left.range.surroundContents(left.node)
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right.range.setStart(range.endContainer, range.endOffset)
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if (node.lastChild) right.range.setEndAfter(node.lastChild)
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right.range.surroundContents(right.node)
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if (!node.parentElement)
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throw new Error('No pude separar los nodos por que no tiene parentNode')
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moveChildren(node, node.parentElement, node)
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node.parentElement.removeChild(node)
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return [left, right]
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}
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