57 lines
1.7 KiB
TypeScript
57 lines
1.7 KiB
TypeScript
import { Decoration, EditorState, Range, syntaxTree } from "../deps.ts";
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import { decoratorStateField } from "./util.ts";
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interface WrapElement {
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selector: string;
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class: string;
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nesting?: boolean;
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disableSpellCheck?: boolean;
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}
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export function lineWrapper(wrapElements: WrapElement[]) {
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return decoratorStateField((state: EditorState) => {
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const widgets: Range<Decoration>[] = [];
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const elementStack: string[] = [];
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const doc = state.doc;
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syntaxTree(state).iterate({
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enter: ({ type, from, to }) => {
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for (const wrapElement of wrapElements) {
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const spellCheckAttributes = wrapElement.disableSpellCheck
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? { attributes: { spellcheck: "false" } }
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: {};
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if (type.name == wrapElement.selector) {
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if (wrapElement.nesting) {
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elementStack.push(type.name);
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}
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const bodyText = doc.sliceString(from, to);
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let idx = from;
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for (const line of bodyText.split("\n")) {
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let cls = wrapElement.class;
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if (wrapElement.nesting) {
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cls = `${cls} ${cls}-${elementStack.length}`;
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}
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widgets.push(
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Decoration.line({
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class: cls,
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...spellCheckAttributes,
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}).range(doc.lineAt(idx).from),
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);
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idx += line.length + 1;
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}
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}
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}
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},
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leave({ type }) {
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for (const wrapElement of wrapElements) {
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if (type.name == wrapElement.selector && wrapElement.nesting) {
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elementStack.pop();
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}
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}
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},
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});
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return Decoration.set(widgets, true);
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});
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}
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