Added tab visibility context and provider for dynamic tab management

- Introduced TabVisibilityProvider component
- Created TabContent for conditional rendering
- Added context and hooks for tab visibility
- Updated DocumentManager dependencies
- Integrated provider in App component

lightrag_webui/src/App.tsx

@@ -1,5 +1,6 @@
 import { useState, useCallback } from 'react'
 import ThemeProvider from '@/components/ThemeProvider'
+import TabVisibilityProvider from '@/contexts/TabVisibilityProvider'
 import MessageAlert from '@/components/MessageAlert'
 import ApiKeyAlert from '@/components/ApiKeyAlert'
 import StatusIndicator from '@/components/graph/StatusIndicator'
@@ -54,33 +55,35 @@ function App() {
 
   return (
     <ThemeProvider>
-      <main className="flex h-screen w-screen overflow-x-hidden">
-        <Tabs
-          defaultValue={currentTab}
-          className="!m-0 flex grow flex-col !p-0"
-          onValueChange={handleTabChange}
-        >
-          <SiteHeader />
-          <div className="relative grow">
-            <TabsContent value="documents" className="absolute top-0 right-0 bottom-0 left-0">
-              <DocumentManager />
-            </TabsContent>
-            <TabsContent value="knowledge-graph" className="absolute top-0 right-0 bottom-0 left-0">
-              <GraphViewer />
-            </TabsContent>
-            <TabsContent value="retrieval" className="absolute top-0 right-0 bottom-0 left-0">
-              <RetrievalTesting />
-            </TabsContent>
-            <TabsContent value="api" className="absolute top-0 right-0 bottom-0 left-0">
-              <ApiSite />
-            </TabsContent>
-          </div>
-        </Tabs>
-        {enableHealthCheck && <StatusIndicator />}
-        {message !== null && !apiKeyInvalid && <MessageAlert />}
-        {apiKeyInvalid && <ApiKeyAlert />}
-        <Toaster />
-      </main>
+      <TabVisibilityProvider>
+        <main className="flex h-screen w-screen overflow-x-hidden">
+          <Tabs
+            defaultValue={currentTab}
+            className="!m-0 flex grow flex-col !p-0"
+            onValueChange={handleTabChange}
+          >
+            <SiteHeader />
+            <div className="relative grow">
+              <TabsContent value="documents" className="absolute top-0 right-0 bottom-0 left-0">
+                <DocumentManager />
+              </TabsContent>
+              <TabsContent value="knowledge-graph" className="absolute top-0 right-0 bottom-0 left-0">
+                <GraphViewer />
+              </TabsContent>
+              <TabsContent value="retrieval" className="absolute top-0 right-0 bottom-0 left-0">
+                <RetrievalTesting />
+              </TabsContent>
+              <TabsContent value="api" className="absolute top-0 right-0 bottom-0 left-0">
+                <ApiSite />
+              </TabsContent>
+            </div>
+          </Tabs>
+          {enableHealthCheck && <StatusIndicator />}
+          {message !== null && !apiKeyInvalid && <MessageAlert />}
+          {apiKeyInvalid && <ApiKeyAlert />}
+          <Toaster />
+        </main>
+      </TabVisibilityProvider>
     </ThemeProvider>
   )
 }

lightrag_webui/src/components/ui/TabContent.tsx

@@ -0,0 +1,39 @@
+import React, { useEffect } from 'react';
+import { useTabVisibility } from '@/contexts/useTabVisibility';
+
+interface TabContentProps {
+  tabId: string;
+  children: React.ReactNode;
+  className?: string;
+}
+
+/**
+ * TabContent component that manages visibility based on tab selection
+ * Works with the TabVisibilityContext to show/hide content based on active tab
+ */
+const TabContent: React.FC<TabContentProps> = ({ tabId, children, className = '' }) => {
+  const { isTabVisible, setTabVisibility } = useTabVisibility();
+  const isVisible = isTabVisible(tabId);
+
+  // Register this tab with the context when mounted
+  useEffect(() => {
+    setTabVisibility(tabId, true);
+    
+    // Cleanup when unmounted
+    return () => {
+      setTabVisibility(tabId, false);
+    };
+  }, [tabId, setTabVisibility]);
+
+  if (!isVisible) {
+    return null;
+  }
+
+  return (
+    <div className={className}>
+      {children}
+    </div>
+  );
+};
+
+export default TabContent;

lightrag_webui/src/contexts/TabVisibilityProvider.tsx

@@ -0,0 +1,38 @@
+import React, { useState, useMemo } from 'react';
+import { TabVisibilityContext } from './context';
+import { TabVisibilityContextType } from './types';
+
+interface TabVisibilityProviderProps {
+  children: React.ReactNode;
+}
+
+/**
+ * Provider component for the TabVisibility context
+ * Manages the visibility state of tabs throughout the application
+ */
+export const TabVisibilityProvider: React.FC<TabVisibilityProviderProps> = ({ children }) => {
+  const [visibleTabs, setVisibleTabs] = useState<Record<string, boolean>>({});
+
+  // Create the context value with memoization to prevent unnecessary re-renders
+  const contextValue = useMemo<TabVisibilityContextType>(
+    () => ({
+      visibleTabs,
+      setTabVisibility: (tabId: string, isVisible: boolean) => {
+        setVisibleTabs((prev) => ({
+          ...prev,
+          [tabId]: isVisible,
+        }));
+      },
+      isTabVisible: (tabId: string) => !!visibleTabs[tabId],
+    }),
+    [visibleTabs]
+  );
+
+  return (
+    <TabVisibilityContext.Provider value={contextValue}>
+      {children}
+    </TabVisibilityContext.Provider>
+  );
+};
+
+export default TabVisibilityProvider;

lightrag_webui/src/contexts/context.ts

@@ -0,0 +1,12 @@
+import { createContext } from 'react';
+import { TabVisibilityContextType } from './types';
+
+// Default context value
+const defaultContext: TabVisibilityContextType = {
+  visibleTabs: {},
+  setTabVisibility: () => {},
+  isTabVisible: () => false,
+};
+
+// Create the context
+export const TabVisibilityContext = createContext<TabVisibilityContextType>(defaultContext);

lightrag_webui/src/contexts/types.ts

@@ -0,0 +1,5 @@
+export interface TabVisibilityContextType {
+  visibleTabs: Record<string, boolean>;
+  setTabVisibility: (tabId: string, isVisible: boolean) => void;
+  isTabVisible: (tabId: string) => boolean;
+}

lightrag_webui/src/contexts/useTabVisibility.ts

@@ -0,0 +1,17 @@
+import { useContext } from 'react';
+import { TabVisibilityContext } from './context';
+import { TabVisibilityContextType } from './types';
+
+/**
+ * Custom hook to access the tab visibility context
+ * @returns The tab visibility context
+ */
+export const useTabVisibility = (): TabVisibilityContextType => {
+  const context = useContext(TabVisibilityContext);
+  
+  if (!context) {
+    throw new Error('useTabVisibility must be used within a TabVisibilityProvider');
+  }
+  
+  return context;
+};

lightrag_webui/src/features/DocumentManager.tsx

@@ -48,11 +48,11 @@ export default function DocumentManager() {
     } catch (err) {
       toast.error(t('documentPanel.documentManager.errors.loadFailed', { error: errorMessage(err) }))
     }
-  }, [setDocs])
+  }, [setDocs, t])
 
   useEffect(() => {
     fetchDocuments()
-  }, []) // eslint-disable-line react-hooks/exhaustive-deps
+  }, [fetchDocuments, t])
 
   const scanDocuments = useCallback(async () => {
     try {
@@ -61,7 +61,7 @@ export default function DocumentManager() {
     } catch (err) {
       toast.error(t('documentPanel.documentManager.errors.scanFailed', { error: errorMessage(err) }))
     }
-  }, [])
+  }, [t])
 
   useEffect(() => {
     const interval = setInterval(async () => {
@@ -75,7 +75,7 @@ export default function DocumentManager() {
       }
     }, 5000)
     return () => clearInterval(interval)
-  }, [health, fetchDocuments])
+  }, [health, fetchDocuments, t])
 
   return (
     <Card className="!size-full !rounded-none !border-none">