53 lines
1.3 KiB
TypeScript
53 lines
1.3 KiB
TypeScript
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import type { Extension } from '@codemirror/state';
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import type { EditorView, Panel } from '@codemirror/view';
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import { drawSelection, showPanel } from '@codemirror/view';
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import { getCM, vim } from '@replit/codemirror-vim';
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type VimStatusPlugin = {
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updateStatus: () => void;
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};
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const isVimStatusPlugin = (value: unknown): value is VimStatusPlugin => {
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return (
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value !== null
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&& typeof value === 'object'
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&& 'updateStatus' in value
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&& typeof value.updateStatus === 'function'
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);
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};
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const bottomVimStatusPanel = (view: EditorView): Panel => {
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const dom = document.createElement('div');
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dom.className = 'cm-vim-panel';
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const cm = getCM(view);
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if (!cm) {
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return { top: false, dom };
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}
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cm.state.statusbar = dom;
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const vimPlugin: unknown = cm.state.vimPlugin;
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// The Vim package exposes only a top status panel; reuse its updater with a bottom panel.
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if (isVimStatusPlugin(vimPlugin)) {
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vimPlugin.updateStatus();
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}
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return {
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top: false,
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dom,
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destroy() {
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if (cm.state.statusbar === dom) {
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cm.state.statusbar = null;
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}
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},
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};
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};
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export function createVimModeExtensions(enabled: boolean | undefined): Extension[] {
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if (!enabled) {
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return [];
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}
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return [vim(), showPanel.of(bottomVimStatusPanel), drawSelection()];
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}
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