hints and diags in editor

client/src/components/hints.tsx

@@ -68,12 +68,12 @@ function hasHiddenHints(step: InteractiveGoalsWithHints): boolean {
 }
 
 
-export function MoreHelpButton() {
+export function MoreHelpButton({selected=null} : {selected?: number}) {
 
   const {proof, setProof} = React.useContext(ProofContext)
   const {deletedChat, setDeletedChat, showHelp, setShowHelp} = React.useContext(DeletedChatContext)
 
-  let k = proof.steps.length - (lastStepHasErrors(proof) ? 2 : 1)
+  let k = (selected === null) ? (proof.steps.length - (lastStepHasErrors(proof) ? 2 : 1)) : selected
 
   const activateHiddenHints = (ev) => {
     // If the last step (`k`) has errors, we want the hidden hints from the

client/src/components/infoview/main.tsx

@@ -155,7 +155,20 @@ export function Main(props: { world: string, level: number, data: LevelInfo}) {
   const {worldId, levelId} = React.useContext(WorldLevelIdContext)
 
   const { proof, setProof } = React.useContext(ProofContext)
+  const {selectedStep, setSelectedStep} = React.useContext(SelectionContext)
+  const { setDeletedChat, showHelp, setShowHelp } = React.useContext(DeletedChatContext)
+
 
+  function toggleSelection(line: number) {
+    return (ev) => {
+      console.debug('toggled selection')
+      if (selectedStep == line) {
+        setSelectedStep(undefined)
+      } else {
+        setSelectedStep(line)
+      }
+    }
+  }
   console.debug(`template: ${props.data?.template}`)
 
   // React.useEffect (() => {
@@ -182,6 +195,19 @@ export function Main(props: { world: string, level: number, data: LevelInfo}) {
 
   const curUri = useEventResult(ec.events.changedCursorLocation, loc => loc?.uri);
 
+  const curPos: DocumentPosition | undefined =
+    useEventResult(ec.events.changedCursorLocation, loc => loc ? { uri: loc.uri, ...loc.range.start } : undefined)
+
+  // Effect when the cursor changes in the editor
+  React.useEffect(() => {
+    // TODO: this is a bit of a hack and will yield unexpected behaviour if lines
+    // are indented.
+    let newPos = curPos?.line + (curPos?.character == 0 ? 0 : 1)
+
+    // scroll the chat along
+    setSelectedStep(newPos)
+  }, [curPos])
+
   useClientNotificationEffect(
     'textDocument/didClose',
     (params: DidCloseTextDocumentParams) => {
@@ -208,6 +234,11 @@ export function Main(props: { world: string, level: number, data: LevelInfo}) {
     ret = <div className="infoview vscode-light">
       {proof.completed && <div className="level-completed">Level completed! 🎉</div>}
       <Infos />
+      <Hints hints={proof.steps[curPos?.line]?.goals[0]?.hints}
+        showHidden={showHelp.has(curPos?.line)} step={curPos?.line}
+        selected={selectedStep} toggleSelection={toggleSelection(curPos?.line)}
+        lastLevel={curPos?.line == proof.steps.length - 1}/>
+      <MoreHelpButton selected={curPos?.line}/>
     </div>
   }
 

client/src/components/infoview/messages.tsx

@@ -194,16 +194,24 @@ export function AllMessages() {
                 </a>
             </span>
         </summary> */}
-        <AllMessagesBody uri={curPos.uri} key={curPos.uri} messages={iDiags0} />
+        <AllMessagesBody uri={curPos.uri} key={curPos.uri} messages={iDiags0} curPos={curPos} />
     {/* </Details> */}
     </RpcContext.Provider>
     )
 }
 
 /** We factor out the body of {@link AllMessages} which lazily fetches its contents only when expanded. */
-function AllMessagesBody({uri, messages}: {uri: DocumentUri, messages: () => Promise<InteractiveDiagnostic[]>}) {
+function AllMessagesBody({uri, curPos, messages}: {uri: DocumentUri, curPos: DocumentPosition | undefined , messages: () => Promise<InteractiveDiagnostic[]>}) {
     const [msgs, setMsgs] = React.useState<InteractiveDiagnostic[] | undefined>(undefined)
-    React.useEffect(() => { void messages().then(setMsgs) }, [messages])
+    React.useEffect(() => { void messages().then(
+        msgs => setMsgs(msgs.filter(
+            (d)=>{
+                //console.log(`message start: ${d.range.start.line}. CurPos: ${curPos.line}`)
+
+                // Only show the messages from the line where the cursor is.
+                return d.range.start.line == curPos.line
+            }))
+    ) }, [messages, curPos])
     if (msgs === undefined) return <div>Loading messages...</div>
     else return <MessagesList uri={uri} messages={msgs}/>
 }

client/src/components/level.tsx

@@ -73,7 +73,7 @@ function Level() {
   </WorldLevelIdContext.Provider>
 }
 
-function ChatPanel({lastLevel}) {
+function ChatPanel({lastLevel, visible = true}) {
   const chatRef = useRef<HTMLDivElement>(null)
   const {mobile} = useContext(PreferencesContext)
   const gameId = useContext(GameIdContext)
@@ -122,7 +122,7 @@ function ChatPanel({lastLevel}) {
 
   let introText: Array<string> = level?.data?.introduction.split(/\n(\s*\n)+/)
 
-  return <div className="chat-panel">
+  return <div className={`chat-panel ${visible ? '' : 'hidden'}`}>
     <div ref={chatRef} className="chat">
       {introText?.filter(t => t.trim()).map(((t, i) =>
         // Show the level's intro text as hints, too
@@ -177,7 +177,7 @@ function ChatPanel({lastLevel}) {
 }
 
 
-function ExercisePanel({codeviewRef, visible=true}) {
+function ExercisePanel({codeviewRef, visible=true}: {codeviewRef: React.MutableRefObject<HTMLDivElement>, visible?: boolean}) {
   const gameId = React.useContext(GameIdContext)
   const {worldId, levelId} = useContext(WorldLevelIdContext)
   const level = useLoadLevelQuery({game: gameId, world: worldId, level: levelId})
@@ -602,7 +602,7 @@ function useLevelEditor(codeviewRef, initialCode, initialSelections, onDidChange
     setInfoProvider(infoProvider)
 
     // TODO: it looks like we get errors "File Changed" here.
-    client.restart()
+    client.restart("Lean4Game")
 
     const editorApi = infoProvider.getApi()