[sc-94612] yellow override icon on Time Grain (shared controls)

Modern ECharts charts pull time_grain_sqla from the shared control
in @superset-ui/chart-controls, not the legacy src/explore/controls.tsx.
Surface the same dashboard-override warning there so the yellow icon
appears on those charts when the time grain is inherited from a dashboard.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

superset-frontend/packages/superset-ui-chart-controls/src/shared-controls/sharedControls.tsx

@@ -180,6 +180,13 @@ const granularity: SharedControlConfig<'SelectControl'> = {
   sortComparator: () => 0, // Disable frontend sorting to preserve backend order
 };
 
+// Surfaced on the Time Grain header when the value is inherited from the
+// dashboard the chart was opened from (see getFormDataWithDashboardContext).
+const DASHBOARD_TIME_GRAIN_ALERT = t(
+  'The time grain is determined by the related dashboard. ' +
+    'Open this chart outside of the dashboard to change it.',
+);
+
 const time_grain_sqla: SharedControlConfig<'SelectControl'> = {
   type: 'SelectControl',
   label: TIME_FILTER_LABELS.time_grain_sqla,
@@ -201,8 +208,12 @@ const time_grain_sqla: SharedControlConfig<'SelectControl'> = {
       'grain is the time interval represented by a ' +
       'single point on the chart.',
   ),
-  mapStateToProps: ({ datasource }) => ({
+  mapStateToProps: ({ datasource, form_data }) => ({
     choices: (datasource as Dataset)?.time_grain_sqla || [],
+    warning:
+      form_data?.dashboardId && isDefined(form_data?.dashboard_time_grain_sqla)
+        ? DASHBOARD_TIME_GRAIN_ALERT
+        : null,
   }),
   visibility: displayTimeRelatedControls,
   sortComparator: () => 0, // Disable frontend sorting to preserve backend order

superset-frontend/src/explore/controlUtils/getFormDataFromDashboardContext.test.ts

@@ -154,6 +154,8 @@ const getExpectedResultFormData = (overrides: JsonObject = {}) => ({
   shared_label_colors: ['boy', 'girl'],
   own_color_scheme: 'supersetColors',
   dashboard_color_scheme: 'd3Category20b',
+  dashboard_time_grain_sqla: 'P1D',
+  dashboard_granularity_sqla: 'ds',
   extra_filters: [
     {
       col: '__time_range',

superset-frontend/src/explore/controlUtils/getFormDataWithDashboardContext.ts

@@ -243,6 +243,21 @@ export const getFormDataWithDashboardContext = (
   const dashboardColorScheme = dashboardContextFormData.color_scheme;
   const appliedColorScheme = dashboardColorScheme || ownColorScheme;
 
+  // Track time controls overridden by the dashboard so Explore can flag them
+  // with a warning icon (see time_grain_sqla / granularity_sqla controls).
+  const dashboardTimeGrain =
+    filterBoxData.time_grain_sqla ?? nativeFiltersData.time_grain_sqla;
+  const dashboardTimeColumn =
+    filterBoxData.granularity_sqla ?? nativeFiltersData.granularity_sqla;
+  const dashboardTimeOverrides: JsonObject = {
+    ...(isDefined(dashboardTimeGrain) && {
+      dashboard_time_grain_sqla: dashboardTimeGrain,
+    }),
+    ...(isDefined(dashboardTimeColumn) && {
+      dashboard_granularity_sqla: dashboardTimeColumn,
+    }),
+  };
+
   const deckGLProperties: JsonObject = {};
 
   if (
@@ -301,5 +316,6 @@ export const getFormDataWithDashboardContext = (
     color_scheme: appliedColorScheme,
     dashboard_color_scheme: dashboardColorScheme,
     ...deckGLProperties,
+    ...dashboardTimeOverrides,
   };
 };

superset-frontend/src/explore/controls.tsx

@@ -60,6 +60,7 @@ import type { Column, SequentialScheme } from '@superset-ui/core';
 import {
   getCategoricalSchemeRegistry,
   getSequentialSchemeRegistry,
+  isDefined,
   legacyValidateInteger,
   validateNonEmpty,
 } from '@superset-ui/core';
@@ -80,8 +81,26 @@ interface Datasource {
 interface ControlState {
   datasource?: Datasource;
   controls?: Record<string, { value?: unknown }>;
+  form_data?: {
+    dashboardId?: number;
+    dashboard_time_grain_sqla?: unknown;
+    dashboard_granularity_sqla?: unknown;
+    [key: string]: unknown;
+  };
 }
 
+// Shown next to time controls in Explore when the value was overridden by the
+// dashboard the chart was opened from (see getFormDataWithDashboardContext).
+const DASHBOARD_TIME_GRAIN_ALERT = t(
+  'The time grain is determined by the related dashboard. ' +
+    'Open this chart outside of the dashboard to change it.',
+);
+
+const DASHBOARD_TIME_COLUMN_ALERT = t(
+  'The time column is determined by the related dashboard. ' +
+    'Open this chart outside of the dashboard to change it.',
+);
+
 interface ControlConfig {
   includeTime?: boolean;
   [key: string]: unknown;
@@ -324,7 +343,11 @@ export const controls = {
     optionRenderer: (c: Column) => <StyledColumnOption column={c} showType />,
     valueKey: 'column_name',
     mapStateToProps: (state: ControlState) => {
-      const props: { choices?: Column[]; default?: string | null } = {};
+      const props: {
+        choices?: Column[];
+        default?: string | null;
+        warning?: string | null;
+      } = {};
       if (state.datasource) {
         props.choices = state.datasource.granularity_sqla;
         props.default = null;
@@ -334,6 +357,12 @@ export const controls = {
           props.default = props.choices[0].column_name;
         }
       }
+      const { dashboardId, dashboard_granularity_sqla } =
+        state.form_data ?? {};
+      props.warning =
+        dashboardId && isDefined(dashboard_granularity_sqla)
+          ? DASHBOARD_TIME_COLUMN_ALERT
+          : null;
       return props;
     },
   },
@@ -349,9 +378,16 @@ export const controls = {
         'The options here are defined on a per database ' +
         'engine basis in the Superset source code.',
     ),
-    mapStateToProps: (state: ControlState) => ({
+    mapStateToProps: (state: ControlState) => {
-      choices: state.datasource ? state.datasource.time_grain_sqla : null,
+      const { dashboardId, dashboard_time_grain_sqla } = state.form_data ?? {};
-    }),
+      return {
+        choices: state.datasource ? state.datasource.time_grain_sqla : null,
+        warning:
+          dashboardId && isDefined(dashboard_time_grain_sqla)
+            ? DASHBOARD_TIME_GRAIN_ALERT
+            : null,
+      };
+    },
   },
 
   time_range: {