56 lines
1.6 KiB
TypeScript
56 lines
1.6 KiB
TypeScript
// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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import { getRange, getSelection } from "./cross-browser";
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function wrappedExceptForWhitespace(text: string, front: string, back: string): string {
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const match = text.match(/^(\s*)([^]*?)(\s*)$/)!;
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return match[1] + front + match[2] + back + match[3];
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}
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function moveCursorInside(selection: Selection, postfix: string): void {
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const range = getRange(selection)!;
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range.setEnd(range.endContainer, range.endOffset - postfix.length);
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range.collapse(false);
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selection.removeAllRanges();
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selection.addRange(range);
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}
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export function wrapInternal(
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base: Element,
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front: string,
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back: string,
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plainText: boolean,
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): void {
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const selection = getSelection(base)!;
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const range = getRange(selection);
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if (!range) {
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return;
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}
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const wasCollapsed = range.collapsed;
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const content = range.cloneContents();
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const span = document.createElement("span");
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span.appendChild(content);
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if (plainText) {
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const new_ = wrappedExceptForWhitespace(span.innerText, front, back);
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document.execCommand("inserttext", false, new_);
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} else {
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const new_ = wrappedExceptForWhitespace(span.innerHTML, front, back);
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document.execCommand("inserthtml", false, new_);
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}
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if (
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wasCollapsed &&
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/* ugly solution: treat <anki-mathjax> differently than other wraps */ !front.includes(
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"<anki-mathjax",
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)
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) {
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moveCursorInside(selection, back);
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}
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}
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