Fix refresh layout button failure

lightrag_webui/src/components/graph/Settings.tsx

@@ -8,7 +8,9 @@ import Input from '@/components/ui/Input'
 import { controlButtonVariant } from '@/lib/constants'
 import { useSettingsStore } from '@/stores/settings'
 import { useBackendState } from '@/stores/state'
-import { useGraphStore } from '@/stores/graph'
+import { useSigma } from '@react-sigma/core'
+import { useLayoutForceAtlas2 } from '@react-sigma/layout-forceatlas2'
+import { animateNodes } from 'sigma/utils'
 
 import { SettingsIcon, RefreshCwIcon } from 'lucide-react'
 import { useTranslation } from 'react-i18next';
@@ -115,7 +117,16 @@ const LabeledNumberInput = ({
 export default function Settings() {
   const [opened, setOpened] = useState<boolean>(false)
   const [tempApiKey, setTempApiKey] = useState<string>('')
-  const refreshLayout = useGraphStore.use.refreshLayout()
+  const sigma = useSigma()
+  const maxIterations = useSettingsStore.use.graphLayoutMaxIterations()
+  const layout = useLayoutForceAtlas2({ iterations: maxIterations })
+
+  const refreshLayout = useCallback(() => {
+    if (!sigma) return
+    const graph = sigma.getGraph()
+    const positions = layout.positions()
+    animateNodes(graph, positions, { duration: 500 })
+  }, [sigma, layout])
 
   const showPropertyPanel = useSettingsStore.use.showPropertyPanel()
   const showNodeSearchBar = useSettingsStore.use.showNodeSearchBar()

lightrag_webui/src/hooks/useLightragGraph.tsx

@@ -589,10 +589,6 @@ const useLightrangeGraph = () => {
           }
         }
 
-        // We need to keep the refreshLayout call because Sigma doesn't automatically detect 
-        // changes to the DirectedGraph object. This is necessary to trigger a re-render.
-        useGraphStore.getState().refreshLayout();
-
       } catch (error) {
         console.error('Error expanding node:', error);
       } finally {
@@ -713,9 +709,6 @@ const useLightrangeGraph = () => {
           toast.info(t('graphPanel.propertiesView.node.nodesRemoved', { count: nodesToDelete.size }));
         }
 
-        // We need to keep the refreshLayout call because Sigma doesn't automatically detect 
-        // changes to the DirectedGraph object. This is necessary to trigger a re-render.
-        useGraphStore.getState().refreshLayout();
 
       } catch (error) {
         console.error('Error pruning node:', error);

lightrag_webui/src/stores/graph.ts

@@ -77,7 +77,6 @@ interface GraphState {
   graphDataFetchAttempted: boolean
   labelsFetchAttempted: boolean
 
-  refreshLayout: () => void
   setSigmaInstance: (instance: any) => void
   setSelectedNode: (nodeId: string | null, moveToSelectedNode?: boolean) => void
   setFocusedNode: (nodeId: string | null) => void
@@ -127,43 +126,6 @@ const useGraphStoreBase = create<GraphState>()((set, get) => ({
   sigmaInstance: null,
   allDatabaseLabels: ['*'],
 
-  refreshLayout: () => {
-    const { sigmaInstance, sigmaGraph } = get();
-    
-    // Debug information to help diagnose issues
-    console.log('refreshLayout called with:', { 
-      hasSigmaInstance: !!sigmaInstance, 
-      hasSigmaGraph: !!sigmaGraph,
-      sigmaInstanceType: sigmaInstance ? typeof sigmaInstance : 'null',
-      sigmaGraphNodeCount: sigmaGraph ? sigmaGraph.order : 0
-    });
-    
-    if (sigmaInstance && sigmaGraph) {
-      try {
-        // 先尝试直接刷新
-        if (typeof sigmaInstance.refresh === 'function') {
-          sigmaInstance.refresh();
-          console.log('Graph refreshed using sigma.refresh()');
-          return;
-        }
-        
-        // 如果没有refresh方法,尝试重新绑定graph
-        if (typeof sigmaInstance.setGraph === 'function') {
-          sigmaInstance.setGraph(sigmaGraph);
-          console.log('Rebound graph to sigma instance');
-        } else {
-          // 如果setGraph方法不存在，尝试直接设置graph属性
-          (sigmaInstance as any).graph = sigmaGraph;
-          console.log('Set graph property directly on sigma instance');
-        }
-      } catch (error) {
-        console.error('Error during refresh:', error);
-      }
-    }
-    
-    // 通知UI需要重新渲染
-    set(state => ({ ...state }));
-  },
 
   setIsFetching: (isFetching: boolean) => set({ isFetching }),
   setShouldRender: (shouldRender: boolean) => set({ shouldRender }),
@@ -412,9 +374,6 @@ const useGraphStoreBase = create<GraphState>()((set, get) => ({
         }
       });
 
-      // Refresh the layout
-      state.refreshLayout();
-
     } catch (error) {
       console.error('Error expanding node:', error);
     } finally {
@@ -489,8 +448,7 @@ const useGraphStoreBase = create<GraphState>()((set, get) => ({
         state.rawGraph.buildDynamicMap();
       }
       
-      // Refresh the layout to update the visualization
-      state.refreshLayout();
+      // 图形更新后会自动触发重新布局
 
     } catch (error) {
       console.error('Error pruning node:', error);