fix(editor): preserve sql tab scroll position

apps/desktop/src/components/editor/QueryEditor.vue

@@ -104,6 +104,7 @@ const props = defineProps<{
   executionError?: string;
   readOnly?: boolean;
   forceWordWrap?: boolean;
+  initialViewport?: { scrollTop: number; scrollLeft: number };
 }>();
 
 const emit = defineEmits<{
@@ -116,10 +117,12 @@ const emit = defineEmits<{
   clickTable: [tableName: string];
   clickColumn: [columns: Array<{ name: string; table: string; schema?: string }>, error?: string | undefined];
   closeColumnPanel: [];
+  viewportChange: [viewport: { scrollTop: number; scrollLeft: number }];
 }>();
 
 const editorRef = ref<HTMLDivElement>();
 const view = shallowRef<EditorViewType | null>(null);
+let viewportEmitFrame: number | null = null;
 const connectionStore = useConnectionStore();
 const settingsStore = useSettingsStore();
 const { isDark } = useTheme();
@@ -1955,6 +1958,8 @@ onMounted(async () => {
   });
 
   view.value = new EditorView({ state, parent: editorRef.value });
+  view.value.scrollDOM.addEventListener("scroll", scheduleEditorViewportEmit, { passive: true });
+  restoreEditorViewport();
   syncContextMenuState(view.value);
   syncEditorFontCssVars(liveFontSize.value, initialSettings.fontFamily);
   registerTableReferenceDropListener();
@@ -2087,6 +2092,7 @@ watch(
 );
 
 function pauseQueryEditorBackgroundWork() {
+  if (view.value) emitEditorViewport(view.value);
   editorIsActive = false;
   semanticDiagnosticRunId++;
   if (semanticDiagnosticTimer) clearTimeout(semanticDiagnosticTimer);
@@ -2099,6 +2105,7 @@ function resumeQueryEditorBackgroundWork() {
   editorIsActive = true;
   registerTableReferenceDropListener();
   scheduleSemanticDiagnostics();
+  restoreEditorViewport();
 }
 
 onActivated(resumeQueryEditorBackgroundWork);
@@ -2107,10 +2114,42 @@ onDeactivated(pauseQueryEditorBackgroundWork);
 
 onBeforeUnmount(() => {
   pauseQueryEditorBackgroundWork();
+  if (viewportEmitFrame !== null) {
+    cancelAnimationFrame(viewportEmitFrame);
+    viewportEmitFrame = null;
+  }
+  view.value?.scrollDOM.removeEventListener("scroll", scheduleEditorViewportEmit);
   zoomCommitScheduler.dispose();
   view.value?.destroy();
 });
 
+function emitEditorViewport(currentView: EditorViewType) {
+  emit("viewportChange", {
+    scrollTop: currentView.scrollDOM.scrollTop,
+    scrollLeft: currentView.scrollDOM.scrollLeft,
+  });
+}
+
+function scheduleEditorViewportEmit() {
+  if (viewportEmitFrame !== null) return;
+  viewportEmitFrame = requestAnimationFrame(() => {
+    viewportEmitFrame = null;
+    if (view.value) emitEditorViewport(view.value);
+  });
+}
+
+function restoreEditorViewport() {
+  const viewport = props.initialViewport;
+  if (!view.value || !viewport) return;
+  requestAnimationFrame(() => {
+    if (!view.value) return;
+    view.value.scrollDOM.scrollTo({
+      top: viewport.scrollTop,
+      left: viewport.scrollLeft,
+    });
+  });
+}
+
 function openSearch(): boolean {
   return searchPanelRef.value?.openSearch() ?? false;
 }

apps/desktop/src/components/layout/ContentArea.vue

@@ -111,6 +111,7 @@ const emit = defineEmits<{
   editorUpdate: [tabId: string, value: string];
   editorSelectionChange: [value: string];
   editorCursorChange: [pos: number];
+  editorViewportChange: [tabId: string, viewport: { scrollTop: number; scrollLeft: number }];
   formatError: [];
   reload: [sql?: string, searchText?: string, whereInput?: string, orderBy?: string, limit?: number, offset?: number];
   paginate: [offset: number, limit: number, whereInput?: string, orderBy?: string];
@@ -445,9 +446,11 @@ defineExpose({ focusSearch, refreshData, handleModRTarget });
               :format-dialect="activeSqlFormatDialect"
               :format-request-id="formatSqlRequest?.tabId === activeTab.id ? formatSqlRequest.id : undefined"
               :execution-error="activeQueryError"
+              :initial-viewport="activeTab.editorViewport"
               @update:model-value="emit('editorUpdate', activeTab.id, $event)"
               @selection-change="emit('editorSelectionChange', $event)"
               @cursor-change="emit('editorCursorChange', $event)"
+              @viewport-change="emit('editorViewportChange', activeTab.id, $event)"
               @format-error="emit('formatError')"
               @execute="emit('execute')"
               @save="emit('saveSql')"