pdfjs

frontend/src/preview/DocumentViewerPanel.tsx

@@ -25,7 +25,6 @@ import { createDocumentActionState } from '../documents/documentActions';
 import { resolveDocumentAssetUrl } from '../asset_manager';
 import PanelHeader from '../ui/PanelHeader';
 import BreadcrumbTrail from '../ui/BreadcrumbTrail';
-import { useAssetNavigator } from '../hooks/useAssetNavigator';
 import DocumentViewerLayout from './DocumentViewerLayout';
 import useViewerLayoutMode from './useViewerLayoutMode';
 import { usePanelResizeBindings } from '../app/PanelManagerContext';
@@ -33,8 +32,13 @@ import { usePanelResizeBindings } from '../app/PanelManagerContext';
 interface DocumentLike {
   id?: string | number;
   title?: string;
+  content_type?: string | null;
   issued_at?: string | null;
   correspondents?: Array<{ id?: string | number; name?: string }>;
+  current_version?: {
+    version_number?: number;
+    version?: { content_type?: string | null } | null;
+  } | null;
   [key: string]: unknown;
 }
 
@@ -245,18 +249,6 @@ const DocumentViewerPanel: React.FC<DocumentViewerPanelProps> = ({
   );
 
   const [zoomOverlayOpen, setZoomOverlayOpen] = useState(false);
-  const previewNavigator = useAssetNavigator({
-    document,
-    assetType: 'preview',
-    ensureAssetUrl,
-    getAsset: getDocumentAsset,
-    prefetch: 3,
-  });
-  const navigatorUrl = previewNavigator?.currentUrl;
-  const navigatorCanGoPrev = Boolean(previewNavigator?.canGoPrev);
-  const navigatorCanGoNext = Boolean(previewNavigator?.canGoNext);
-  const navigatorGoPrev = previewNavigator?.goPrev;
-  const navigatorGoNext = previewNavigator?.goNext;
 
   const handleZoomOpen = useCallback(() => {
     if (!previewEntry?.url) {
@@ -360,34 +352,18 @@ const panelRef = useRef<HTMLDivElement | HTMLFormElement | HTMLElement | null>(n
   }, [breadcrumbs, handleBreadcrumbNavigate]);
 
   const zoomDisplay = useMemo(() => {
-    if (navigatorUrl && document) {
-      return {
-        url: navigatorUrl,
-        alt: document.title,
-        canGoPrev: navigatorCanGoPrev,
-        canGoNext: navigatorCanGoNext,
-        goPrev: navigatorCanGoPrev ? navigatorGoPrev : undefined,
-        goNext: navigatorCanGoNext ? navigatorGoNext : undefined,
-      };
+    if (!previewEntry?.url || !document) {
+      return null;
     }
-    if (previewEntry?.url && document) {
-      return {
-        url: previewEntry.url,
-        alt: document.title,
-        canGoPrev: false,
-        canGoNext: false,
-      };
-    }
-    return null;
-  }, [
-    navigatorUrl,
-    navigatorCanGoPrev,
-    navigatorCanGoNext,
-    navigatorGoPrev,
-    navigatorGoNext,
-    previewEntry?.url,
-    document,
-  ]);
+    const docContentType = document.content_type;
+    const versionContentType = document.current_version?.version?.content_type;
+    const normalizedContentType = previewEntry.contentType || docContentType || versionContentType || null;
+    return {
+      url: previewEntry.url,
+      alt: document.title,
+      contentType: normalizedContentType || undefined,
+    };
+  }, [previewEntry?.url, previewEntry?.contentType, document]);
 
   const headerActions = createDocumentViewerHeaderActions({
     document,