83 lines
2.0 KiB
TypeScript
83 lines
2.0 KiB
TypeScript
import {
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Decoration,
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DecorationSet,
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EditorView,
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ViewPlugin,
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ViewUpdate,
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} from "../deps.ts";
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import {
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checkRangeOverlap,
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invisibleDecoration,
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isCursorInRange,
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iterateTreeInVisibleRanges,
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} from "./util.ts";
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/**
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* Plugin to hide path prefix when the cursor is not inside.
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*/
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class CleanWikiLinkPlugin {
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decorations: DecorationSet;
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constructor(view: EditorView) {
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this.decorations = this.compute(view);
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}
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update(update: ViewUpdate) {
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if (update.docChanged || update.viewportChanged || update.selectionSet) {
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this.decorations = this.compute(update.view);
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}
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}
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compute(view: EditorView): DecorationSet {
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const widgets: any[] = [];
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let parentRange: [number, number];
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iterateTreeInVisibleRanges(view, {
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enter: ({ type, from, to }) => {
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if (type.name === "WikiLinkPage") {
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if (
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parentRange &&
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checkRangeOverlap([from, to], parentRange)
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) {
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return;
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} else parentRange = [from, to];
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if (isCursorInRange(view.state, [from, to])) {
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return;
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}
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// Add decoration to hide the prefix [[
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widgets.push(
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invisibleDecoration.range(
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from - 2,
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from,
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),
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);
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// Add decoration to hide the postfix [[
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widgets.push(
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invisibleDecoration.range(
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to,
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to + 2,
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),
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);
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// Now check if there's a "/" inside
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const text = view.state.sliceDoc(from, to);
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if (text.indexOf("/") === -1) {
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return;
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}
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// Add a inivisible decoration to hide the path prefix
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widgets.push(
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invisibleDecoration.range(
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from,
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from + text.lastIndexOf("/") + 1,
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),
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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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export const cleanWikiLinkPlugin = () => [
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ViewPlugin.fromClass(CleanWikiLinkPlugin, {
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decorations: (v) => v.decorations,
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}),
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];
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