Debounce autocomplete

src-web/components/Editor/Editor.tsx

@@ -67,7 +67,7 @@ export default function Editor({
   // Create codemirror instance when ref initializes
   useEffect(() => {
     if (ref.current === null) return;
-    console.log('INIT EDITOR');
+    // console.log('INIT EDITOR');
     let view: EditorView | null = null;
     try {
       const langHolder = new Compartment();
@@ -102,7 +102,7 @@ export default function Editor({
   // Update language extension when contentType changes
   useEffect(() => {
     if (cm === null) return;
-    console.log('UPDATE LANG');
+    // console.log('UPDATE LANG');
     const ext = getLanguageExtension({ contentType, useTemplating });
     cm.view.dispatch({ effects: cm.langHolder.reconfigure(ext) });
   }, [contentType]);
@@ -110,6 +110,7 @@ export default function Editor({
   return (
     <div
       ref={ref}
+      dangerouslySetInnerHTML={{ __html: '' }}
       className={classnames(
         className,
         'cm-wrapper text-base bg-background',

src-web/components/Editor/autocomplete.ts

@@ -0,0 +1,29 @@
+import { closeCompletion, startCompletion } from '@codemirror/autocomplete';
+import { EditorView } from 'codemirror';
+import { debounce } from 'lodash';
+
+/*
+ * Debounce autocomplete until user stops typing for `millis` milliseconds.
+ */
+export function debouncedAutocompletionDisplay({ millis }: { millis: number }) {
+  // TODO: Figure out how to show completion without setting context.explicit = true
+  const debouncedStartCompletion = debounce(function (view: EditorView) {
+    startCompletion(view);
+  }, millis);
+
+  return EditorView.updateListener.of(({ view, docChanged }) => {
+    // const completions = currentCompletions(view.state);
+    // const status = completionStatus(view.state);
+
+    // If the document hasn't changed, we don't need to do anything
+    if (!docChanged) return;
+
+    if (view.state.doc.length === 0) {
+      debouncedStartCompletion.cancel();
+      closeCompletion(view);
+      return;
+    }
+
+    debouncedStartCompletion(view);
+  });
+}

src-web/components/Editor/extensions.ts

@@ -33,6 +33,7 @@ import {
   rectangularSelection,
 } from '@codemirror/view';
 import { tags as t } from '@lezer/highlight';
+import { debouncedAutocompletionDisplay } from './autocomplete';
 import { twig } from './twig/extension';
 import { url } from './url/extension';
 
@@ -107,7 +108,8 @@ export const baseExtensions = [
   drawSelection(),
   dropCursor(),
   bracketMatching(),
-  autocompletion({ closeOnBlur: true, interactionDelay: 200 }),
+  debouncedAutocompletionDisplay({ millis: 1000 }),
+  autocompletion({ closeOnBlur: true, interactionDelay: 200, activateOnTyping: false }),
   syntaxHighlighting(myHighlightStyle),
   EditorState.allowMultipleSelections.of(true),
 ];

src-web/components/Editor/twig/completion.ts

@@ -47,6 +47,7 @@ export function completions(context: CompletionContext) {
         label: toStartOfVariable ? `${openTag}${v.name}${closeTag}` : v.name,
         apply: `${openTag}${v.name}${closeTag}`,
         type: 'variable',
+        matchLen,
       }))
       // Filter out exact matches
       .filter((o) => o.label !== toMatch.text),