Allow durable imports and deep copies in certified loading scopes

src/components/canvas/headless-graph-canvas.tsx

@@ -41,12 +41,13 @@ function CanvasView({ engine, board, viewId, renderers,fitLoading=true }: { engi
 
   if (liveView) lastView.current = liveView;
   const view = liveView ?? lastView.current!, flow = useReactFlow<ProjectionNode>();
-  const canCreate=!loading||loading.version===4&&engine.editor.getQueries(root.document).coverage.completeCanvasIds.includes(view.canvasId);
+  const canCreate=!loading||loading.version>=4&&engine.editor.getQueries(root.document).coverage.completeCanvasIds.includes(view.canvasId);
   useEffect(()=>{if(!needsLoadingFit.current||!flow.viewportInitialized||!root.document.elements.size)return;needsLoadingFit.current=false;void flow.fitView({padding:.2,maxZoom:1});},[flow,root.document]);
   const preparingCopy = [...(root.runtime.imports?.values() ?? [])].some(job => job.status === 'preparing' && job.source?.targetCanvasId === view.canvasId);
   const [editorFocused, setEditorFocused] = useState(false), focusEpoch = useRef(0);
   useEffect(() => { focusEpoch.current++; setEditorFocused(false); return () => { focusEpoch.current++; }; }, [engine,viewId]);
   const [copying, setCopying] = useState(false);
+  const copyAvailability=useMemo(()=>engine.imports.canDuplicate([...view.selection].map(id=>root.document.elements.get(id)).filter((element):element is ElementRecord=>!!element).map(({id,incarnation})=>({id,incarnation})),{viewCanvasId:view.canvasId}),[engine,root,view.selection,view.canvasId]);
   const [showAI, setShowAI] = useState(false), [showRecovery, setShowRecovery] = useState(false);
   const [error, setError] = useState("");
   const [displayState, setDisplayState] = useState<{engine:ProjectEngine|null;viewId:Id|null;sources:Map<Id,ResourceViewSource>;failures:number}>({engine:null,viewId:null,sources:new Map(),failures:0});
@@ -246,7 +247,7 @@ function CanvasView({ engine, board, viewId, renderers,fitLoading=true }: { engi
     </EdgeEditing.Provider></NodeEditing.Provider></CanvasRendererCommandsContext.Provider></ImagePreviews.Provider>
     <div className={styles.topRight}><div className={`${toolbar.surface} ${styles.toolbar}`} role="toolbar" aria-label="图谱视图控制">
       <IconButton icon={Undo2} label="撤销" disabled={!root.history.undo.length} onClick={() => report(engine.editor.history.undo())} /><IconButton icon={Redo2} label="重做" disabled={!root.history.redo.length} onClick={() => report(engine.editor.history.redo())} />
-      <IconButton icon={Copy} label={copying || preparingCopy ? "正在准备复制" : "深复制选中内容"} disabled={!!loading || copying || preparingCopy || !view.selection.size} onClick={() => {
+      <IconButton icon={Copy} label={copying || preparingCopy ? "正在准备复制" : "深复制选中内容"} disabled={copying || preparingCopy || !copyAvailability.enabled} onClick={() => {
         const captured = current.current, selection = [...captured.view.selection].map(id => captured.root.document.elements.get(id)).filter((item): item is ElementRecord => !!item).map(({id, incarnation}) => ({id, incarnation}));
         setCopying(true); setError("");
         void engine.imports.duplicate(selection, {viewCanvasId: captured.view.canvasId}).catch(error => { if (current.current.engine === engine && current.current.view.id === viewId) setError(errorText(error)); }).finally(() => { if (current.current.engine === engine && current.current.view.id === viewId) setCopying(false); });
@@ -261,7 +262,7 @@ function CanvasView({ engine, board, viewId, renderers,fitLoading=true }: { engi
       <IconButton icon={Type} label="添加纯文本" disabled={!canCreate} onClick={() => add('plain-text')} /><IconButton icon={StickyNote} label="添加文本卡片" disabled={!canCreate} onClick={() => add('text')} /><IconButton icon={ImagePlus} label="添加图片" disabled={!!loading} onClick={() => imageInput.current?.click()} /><IconButton icon={Frame} label="添加框选区" disabled={!canCreate} onClick={() => add('frame')} />
     </div>
     <input ref={imageInput} type="file" accept="image/png,image/jpeg,image/gif,image/webp" multiple hidden onChange={event => { const files = [...event.target.files ?? []]; event.target.value = ''; try { report(engine.stageFiles(files.map(file => ({ name: file.name, bytes: file, defaultSize: true })), (refs, tx) => { for (const ref of refs) add('image', ref, tx); })); } catch (e) { setError(errorText(e)); } }} />
-    {!loading&&<HeadlessImports engine={engine} canvasId={view.canvasId} />}
+    {(!loading||loading.version===5)&&<HeadlessImports engine={engine} canvasId={view.canvasId} />}
     {showAI && aiElement && <HeadlessAIPanel key={`${aiElement.id}:${aiElement.incarnation}:${aiElement.ownerCanvasId}`} engine={engine} element={aiElement} close={() => setShowAI(false)} />}
     {showRecovery && <HeadlessRecoveryDialog engine={engine} close={() => setShowRecovery(false)} />}
     {error && <div className={styles.error} role="alert">{error} {displayState.engine===engine&&displayState.viewId===viewId&&displayState.failures>0&&<button onClick={()=>{setError('');resourceView.current?.retry();}}>重试图片</button>}<button onClick={() => setError('')}>关闭</button></div>}

src/components/canvas/headless-imports.tsx

@@ -17,7 +17,7 @@ export function HeadlessImports({ engine, canvasId }: { engine: ProjectEngine; c
   const jobs = [...(snapshot.runtime.imports?.values() ?? [])].filter(job => job.source?.targetCanvasId === canvasId).slice(-3).reverse();
   const control = (work: Promise<void>) => { void work.then(() => { if (scope.current.engine === engine && scope.current.canvasId === canvasId) setError(""); }).catch(error => { if (scope.current.engine === engine && scope.current.canvasId === canvasId) setError(errorText(error)); }); };
   return <aside className={styles.importPanel} aria-label="画布导入">
-    <div className={styles.importActions}><IconButton icon={FolderInput} label="导入 NDJSON 画布数据" onClick={() => input.current?.click()} /><span>逐行画布数据</span></div>
+    <div className={styles.importActions}><IconButton icon={FolderInput} label="导入 NDJSON 画布数据" disabled={!engine.imports.canStart(canvasId).enabled} onClick={() => input.current?.click()} /><span>逐行画布数据</span></div>
     <input data-canvas-import ref={input} type="file" accept=".ndjson,.jsonl,application/x-ndjson" hidden onChange={event => {
       const file = event.target.files?.[0]; event.target.value = ""; if (!file) return;
       try { engine.imports.startNdjson(file, canvasId); setOpen(true); setError(""); } catch (error) { setError(errorText(error)); }