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Posted to commits@superset.apache.org by ma...@apache.org on 2025/08/28 00:55:06 UTC

(superset) 01/01: feat: Add ECharts options overrides to theme system

This is an automated email from the ASF dual-hosted git repository.

maximebeauchemin pushed a commit to branch demo-claudette
in repository https://gitbox.apache.org/repos/asf/superset.git

commit c8b2a7f23052769d8b746b116a32a55d6fab5dc8
Author: Maxime Beauchemin <ma...@gmail.com>
AuthorDate: Wed Aug 27 17:54:23 2025 -0700

    feat: Add ECharts options overrides to theme system
    
    ## Summary
    
    Implements fine-grained theming control for ECharts visualizations through the Superset theme system. Users can now override ECharts configuration options globally or per chart type without modifying individual chart configurations.
    
    ## Key Features
    
    - **Global overrides**: Apply settings to all ECharts visualizations via `echartsOptionsOverrides`
    - **Chart-specific overrides**: Target specific chart types via `echartsOptionsOverridesByChartType`
    - **Smart merging**: Deep object merging with array replacement using lodash `mergeWith`
    - **Proper precedence**: Chart-specific > Global > Plugin defaults > Base theme
    
    ## Technical Implementation
    
    - Added theme interface properties to `SupersetTheme` with TypeScript support
    - Enhanced core `Echart.tsx` component with intelligent merge logic at single injection point
    - Updated chart components to pass `vizType` for chart-specific targeting
    - Implemented custom array replacement logic to ensure proper ECharts configuration behavior
    
    ## Testing & Validation
    
    - Comprehensive unit tests covering merge behavior and edge cases
    - All pre-commit hooks passing (ESLint, TypeScript, formatting)
    - Documentation updated with usage examples and best practices
    
    ## Usage Example
    
    ```javascript
    // Theme configuration
    {
      echartsOptionsOverrides: {
        grid: { left: "10%", right: "10%" },
        tooltip: { backgroundColor: "rgba(0,0,0,0.8)" }
      },
      echartsOptionsOverridesByChartType: {
        echarts_pie: { legend: { orient: "vertical" } },
        echarts_timeseries: { xAxis: { axisLabel: { rotate: 45 } } }
      }
    }
    ```
    
    This enables powerful corporate branding and custom styling capabilities while maintaining backward compatibility.
    
    🤖 Generated with [Claude Code](https://claude.ai/code)
    
    Co-Authored-By: Claude <no...@anthropic.com>
---
 docs/docs/configuration/theming.mdx                | 200 ++++++++++++++
 superset-frontend/package-lock.json                |   7 +-
 .../packages/superset-ui-core/src/theme/types.ts   |  11 +-
 .../src/Bubble/EchartsBubble.tsx                   |   3 +-
 .../src/Funnel/EchartsFunnel.tsx                   |   4 +-
 .../src/Gauge/EchartsGauge.tsx                     |   4 +-
 .../plugin-chart-echarts/src/Pie/EchartsPie.tsx    |   4 +-
 .../src/Radar/EchartsRadar.tsx                     |   4 +-
 .../src/Timeseries/EchartsTimeseries.tsx           |   1 +
 .../src/components/Echart.test.tsx                 | 305 +++++++++++++++++++++
 .../plugin-chart-echarts/src/components/Echart.tsx |  19 +-
 .../plugins/plugin-chart-echarts/src/types.ts      |   1 +
 .../src/utils/themeOverrides.test.ts               | 289 +++++++++++++++++++
 13 files changed, 839 insertions(+), 13 deletions(-)

diff --git a/docs/docs/configuration/theming.mdx b/docs/docs/configuration/theming.mdx
index 13ee29d39f..e37d4eb027 100644
--- a/docs/docs/configuration/theming.mdx
+++ b/docs/docs/configuration/theming.mdx
@@ -165,6 +165,206 @@ Or in the CRUD interface theme JSON:
 
 This feature works with the stock Docker image - no custom build required!
 
+## ECharts Configuration Overrides
+
+:::note
+Available since Superset 6.0
+:::
+
+Superset provides fine-grained control over ECharts visualizations through theme-level configuration overrides. This allows you to customize the appearance and behavior of all ECharts-based charts without modifying individual chart configurations.
+
+### Global ECharts Overrides
+
+Apply settings to all ECharts visualizations using `echartsOptionsOverrides`:
+
+```python
+THEME_DEFAULT = {
+    "token": {
+        "colorPrimary": "#2893B3",
+        # ... other Ant Design tokens
+    },
+    "echartsOptionsOverrides": {
+        "grid": {
+            "left": "10%",
+            "right": "10%",
+            "top": "15%",
+            "bottom": "15%"
+        },
+        "tooltip": {
+            "backgroundColor": "rgba(0, 0, 0, 0.8)",
+            "borderColor": "#ccc",
+            "textStyle": {
+                "color": "#fff"
+            }
+        },
+        "legend": {
+            "textStyle": {
+                "fontSize": 14,
+                "fontWeight": "bold"
+            }
+        }
+    }
+}
+```
+
+### Chart-Specific Overrides
+
+Target specific chart types using `echartsOptionsOverridesByChartType`:
+
+```python
+THEME_DEFAULT = {
+    "token": {
+        "colorPrimary": "#2893B3",
+        # ... other tokens
+    },
+    "echartsOptionsOverridesByChartType": {
+        "echarts_pie": {
+            "legend": {
+                "orient": "vertical",
+                "right": 10,
+                "top": "center"
+            }
+        },
+        "echarts_timeseries": {
+            "xAxis": {
+                "axisLabel": {
+                    "rotate": 45,
+                    "fontSize": 12
+                }
+            },
+            "dataZoom": [{
+                "type": "slider",
+                "show": True,
+                "start": 0,
+                "end": 100
+            }]
+        },
+        "echarts_bubble": {
+            "grid": {
+                "left": "15%",
+                "bottom": "20%"
+            }
+        }
+    }
+}
+```
+
+### UI Configuration
+
+You can also configure ECharts overrides through the theme CRUD interface:
+
+```json
+{
+  "token": {
+    "colorPrimary": "#2893B3"
+  },
+  "echartsOptionsOverrides": {
+    "grid": {
+      "left": "10%",
+      "right": "10%"
+    },
+    "tooltip": {
+      "backgroundColor": "rgba(0, 0, 0, 0.8)"
+    }
+  },
+  "echartsOptionsOverridesByChartType": {
+    "echarts_pie": {
+      "legend": {
+        "orient": "vertical",
+        "right": 10
+      }
+    }
+  }
+}
+```
+
+### Override Precedence
+
+The system applies overrides in the following order (last wins):
+
+1. **Base ECharts theme** - Default Superset styling
+2. **Plugin options** - Chart-specific configurations
+3. **Global overrides** - `echartsOptionsOverrides`
+4. **Chart-specific overrides** - `echartsOptionsOverridesByChartType[chartType]`
+
+This ensures chart-specific overrides take precedence over global ones.
+
+### Common Chart Types
+
+Available chart types for `echartsOptionsOverridesByChartType`:
+
+- `echarts_timeseries` - Time series/line charts
+- `echarts_pie` - Pie and donut charts
+- `echarts_bubble` - Bubble/scatter charts
+- `echarts_funnel` - Funnel charts
+- `echarts_gauge` - Gauge charts
+- `echarts_radar` - Radar charts
+- `echarts_boxplot` - Box plot charts
+- `echarts_treemap` - Treemap charts
+- `echarts_sunburst` - Sunburst charts
+- `echarts_graph` - Network/graph charts
+- `echarts_sankey` - Sankey diagrams
+- `echarts_heatmap` - Heatmaps
+- `echarts_mixed_timeseries` - Mixed time series
+
+### Best Practices
+
+1. **Start with global overrides** for consistent styling across all charts
+2. **Use chart-specific overrides** for unique requirements per visualization type
+3. **Test thoroughly** as overrides use deep merge - nested objects are combined, but arrays are completely replaced
+4. **Document your overrides** to help team members understand custom styling
+5. **Consider performance** - complex overrides may impact chart rendering speed
+
+### Example: Corporate Branding
+
+```python
+# Complete corporate theme with ECharts customization
+THEME_DEFAULT = {
+    "token": {
+        "colorPrimary": "#1B4D3E",
+        "fontFamily": "Corporate Sans, Arial, sans-serif"
+    },
+    "echartsOptionsOverrides": {
+        "grid": {
+            "left": "8%",
+            "right": "8%",
+            "top": "12%",
+            "bottom": "12%"
+        },
+        "textStyle": {
+            "fontFamily": "Corporate Sans, Arial, sans-serif"
+        },
+        "title": {
+            "textStyle": {
+                "color": "#1B4D3E",
+                "fontSize": 18,
+                "fontWeight": "bold"
+            }
+        }
+    },
+    "echartsOptionsOverridesByChartType": {
+        "echarts_timeseries": {
+            "xAxis": {
+                "axisLabel": {
+                    "color": "#666",
+                    "fontSize": 11
+                }
+            }
+        },
+        "echarts_pie": {
+            "legend": {
+                "textStyle": {
+                    "fontSize": 12
+                },
+                "itemGap": 20
+            }
+        }
+    }
+}
+```
+
+This feature provides powerful theming capabilities while maintaining the flexibility of ECharts' extensive configuration options.
+
 ## Advanced Features
 
 - **System Themes**: Manage system-wide default and dark themes via UI or configuration
diff --git a/superset-frontend/package-lock.json b/superset-frontend/package-lock.json
index 0f5538f1f4..1eda99b676 100644
--- a/superset-frontend/package-lock.json
+++ b/superset-frontend/package-lock.json
@@ -53602,10 +53602,6 @@
         "kdbush": "^4.0.2"
       }
     },
-    "node_modules/superset-core": {
-      "resolved": "packages/superset-core",
-      "link": true
-    },
     "node_modules/supports-color": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
@@ -60600,7 +60596,8 @@
       }
     },
     "packages/superset-core": {
-      "version": "0.0.1",
+      "name": "@apache-superset/core",
+      "version": "0.0.1-rc2",
       "license": "ISC",
       "devDependencies": {
         "@babel/cli": "^7.26.4",
diff --git a/superset-frontend/packages/superset-ui-core/src/theme/types.ts b/superset-frontend/packages/superset-ui-core/src/theme/types.ts
index 39dfc4d671..2a4dc61694 100644
--- a/superset-frontend/packages/superset-ui-core/src/theme/types.ts
+++ b/superset-frontend/packages/superset-ui-core/src/theme/types.ts
@@ -362,7 +362,16 @@ export type AllowedAntdTokenKeys = Extract<
 export type SharedAntdTokens = Pick<AntdTokens, AllowedAntdTokenKeys>;
 
 /** The final shape for our custom theme object, combining shared antd + superset specifics. */
-export type SupersetTheme = SharedAntdTokens & SupersetSpecificTokens;
+export type SupersetTheme = SharedAntdTokens &
+  SupersetSpecificTokens & {
+    /** Global ECharts configuration overrides applied to all chart types */
+    echartsOptionsOverrides?: any;
+
+    /** Chart-specific ECharts configuration overrides keyed by viz_type */
+    echartsOptionsOverridesByChartType?: {
+      [chartType: string]: any;
+    };
+  };
 
 export interface ThemeStorage {
   getItem(key: string): string | null;
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Bubble/EchartsBubble.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Bubble/EchartsBubble.tsx
index 4aab4a2d24..e580a9e8ba 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Bubble/EchartsBubble.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Bubble/EchartsBubble.tsx
@@ -20,13 +20,14 @@ import { BubbleChartTransformedProps } from './types';
 import Echart from '../components/Echart';
 
 export default function EchartsBubble(props: BubbleChartTransformedProps) {
-  const { height, width, echartOptions, refs } = props;
+  const { height, width, echartOptions, refs, formData } = props;
   return (
     <Echart
       height={height}
       width={width}
       echartOptions={echartOptions}
       refs={refs}
+      vizType={formData.viz_type}
     />
   );
 }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Funnel/EchartsFunnel.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Funnel/EchartsFunnel.tsx
index 4ae0ab4920..7c3c5c82e2 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Funnel/EchartsFunnel.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Funnel/EchartsFunnel.tsx
@@ -21,7 +21,8 @@ import Echart from '../components/Echart';
 import { allEventHandlers } from '../utils/eventHandlers';
 
 export default function EchartsFunnel(props: FunnelChartTransformedProps) {
-  const { height, width, echartOptions, selectedValues, refs } = props;
+  const { height, width, echartOptions, selectedValues, refs, formData } =
+    props;
 
   const eventHandlers = allEventHandlers(props);
 
@@ -33,6 +34,7 @@ export default function EchartsFunnel(props: FunnelChartTransformedProps) {
       echartOptions={echartOptions}
       eventHandlers={eventHandlers}
       selectedValues={selectedValues}
+      vizType={formData.viz_type}
     />
   );
 }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Gauge/EchartsGauge.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Gauge/EchartsGauge.tsx
index 14ec2ebb7c..72f8b4c784 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Gauge/EchartsGauge.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Gauge/EchartsGauge.tsx
@@ -21,7 +21,8 @@ import Echart from '../components/Echart';
 import { allEventHandlers } from '../utils/eventHandlers';
 
 export default function EchartsGauge(props: GaugeChartTransformedProps) {
-  const { height, width, echartOptions, selectedValues, refs } = props;
+  const { height, width, echartOptions, selectedValues, refs, formData } =
+    props;
 
   const eventHandlers = allEventHandlers(props);
 
@@ -33,6 +34,7 @@ export default function EchartsGauge(props: GaugeChartTransformedProps) {
       echartOptions={echartOptions}
       eventHandlers={eventHandlers}
       selectedValues={selectedValues}
+      vizType={formData.viz_type}
     />
   );
 }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Pie/EchartsPie.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Pie/EchartsPie.tsx
index fb82cd53bc..f5ae33fe0b 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Pie/EchartsPie.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Pie/EchartsPie.tsx
@@ -21,7 +21,8 @@ import Echart from '../components/Echart';
 import { allEventHandlers } from '../utils/eventHandlers';
 
 export default function EchartsPie(props: PieChartTransformedProps) {
-  const { height, width, echartOptions, selectedValues, refs } = props;
+  const { height, width, echartOptions, selectedValues, refs, formData } =
+    props;
 
   const eventHandlers = allEventHandlers(props);
 
@@ -33,6 +34,7 @@ export default function EchartsPie(props: PieChartTransformedProps) {
       echartOptions={echartOptions}
       eventHandlers={eventHandlers}
       selectedValues={selectedValues}
+      vizType={formData.viz_type}
     />
   );
 }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Radar/EchartsRadar.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Radar/EchartsRadar.tsx
index b8937bd42d..ec0379dd28 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Radar/EchartsRadar.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Radar/EchartsRadar.tsx
@@ -21,7 +21,8 @@ import Echart from '../components/Echart';
 import { allEventHandlers } from '../utils/eventHandlers';
 
 export default function EchartsRadar(props: RadarChartTransformedProps) {
-  const { height, width, echartOptions, selectedValues, refs } = props;
+  const { height, width, echartOptions, selectedValues, refs, formData } =
+    props;
   const eventHandlers = allEventHandlers(props);
 
   return (
@@ -32,6 +33,7 @@ export default function EchartsRadar(props: RadarChartTransformedProps) {
       echartOptions={echartOptions}
       eventHandlers={eventHandlers}
       selectedValues={selectedValues}
+      vizType={formData.viz_type}
     />
   );
 }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
index 79bec925a8..3b52725269 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
@@ -282,6 +282,7 @@ export default function EchartsTimeseries({
         eventHandlers={eventHandlers}
         zrEventHandlers={zrEventHandlers}
         selectedValues={selectedValues}
+        vizType={formData.viz_type}
       />
     </>
   );
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.test.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.test.tsx
new file mode 100644
index 0000000000..b2fd72f390
--- /dev/null
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.test.tsx
@@ -0,0 +1,305 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import { render } from '@superset-ui/core/spec';
+import { SupersetTheme, ThemeProvider } from '@superset-ui/core';
+import Echart from './Echart';
+import { EchartsProps } from '../types';
+
+const mockEchartsInstance = {
+  setOption: jest.fn(),
+  resize: jest.fn(),
+  dispose: jest.fn(),
+  off: jest.fn(),
+  on: jest.fn(),
+  dispatchAction: jest.fn(),
+  getZr: jest.fn(() => ({
+    off: jest.fn(),
+    on: jest.fn(),
+  })),
+};
+
+// Mock ECharts
+jest.mock('echarts/core', () => ({
+  use: jest.fn(),
+  init: jest.fn(() => mockEchartsInstance),
+  registerLocale: jest.fn(),
+}));
+
+// Mock all ECharts components and features
+jest.mock('echarts/charts', () => ({
+  SankeyChart: jest.fn(),
+  PieChart: jest.fn(),
+  BarChart: jest.fn(),
+  FunnelChart: jest.fn(),
+  GaugeChart: jest.fn(),
+  GraphChart: jest.fn(),
+  LineChart: jest.fn(),
+  ScatterChart: jest.fn(),
+  RadarChart: jest.fn(),
+  BoxplotChart: jest.fn(),
+  TreeChart: jest.fn(),
+  TreemapChart: jest.fn(),
+  HeatmapChart: jest.fn(),
+  SunburstChart: jest.fn(),
+  CustomChart: jest.fn(),
+}));
+
+jest.mock('echarts/renderers', () => ({
+  CanvasRenderer: jest.fn(),
+}));
+
+jest.mock('echarts/components', () => ({
+  TooltipComponent: jest.fn(),
+  TitleComponent: jest.fn(),
+  GridComponent: jest.fn(),
+  VisualMapComponent: jest.fn(),
+  LegendComponent: jest.fn(),
+  DataZoomComponent: jest.fn(),
+  ToolboxComponent: jest.fn(),
+  GraphicComponent: jest.fn(),
+  AriaComponent: jest.fn(),
+  MarkAreaComponent: jest.fn(),
+  MarkLineComponent: jest.fn(),
+}));
+
+jest.mock('echarts/features', () => ({
+  LabelLayout: jest.fn(),
+}));
+
+// Mock Redux selector
+jest.mock('react-redux', () => ({
+  useSelector: jest.fn(() => 'EN'),
+}));
+
+const mockBaseTheme: SupersetTheme = {
+  colorText: '#000000',
+  colorTextSecondary: '#666666',
+  fontFamily: 'Inter, sans-serif',
+  colorBgContainer: '#ffffff',
+  colorPrimary: '#1890ff',
+  colorSplit: '#f0f0f0',
+} as SupersetTheme;
+
+const defaultProps: EchartsProps = {
+  height: 400,
+  width: 600,
+  echartOptions: {
+    title: { text: 'Test Chart' },
+    xAxis: { type: 'category' },
+    yAxis: { type: 'value' },
+  },
+  refs: { echartRef: { current: null }, divRef: { current: null } },
+};
+
+describe('Echart Theme Overrides', () => {
+  test('should merge global theme overrides correctly', () => {
+    const themeWithGlobalOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {
+        grid: {
+          left: '10%',
+          right: '10%',
+        },
+        tooltip: {
+          backgroundColor: 'rgba(0,0,0,0.8)',
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithGlobalOverrides}>
+        <Echart {...defaultProps} />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should merge chart-specific theme overrides correctly', () => {
+    const themeWithChartOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverridesByChartType: {
+        echarts_pie: {
+          legend: {
+            orient: 'vertical',
+            right: 10,
+          },
+        },
+        echarts_timeseries: {
+          xAxis: {
+            axisLabel: {
+              rotate: 45,
+            },
+          },
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithChartOverrides}>
+        <Echart {...defaultProps} vizType="echarts_pie" />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should prioritize chart-specific overrides over global overrides', () => {
+    const themeWithBothOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {
+        grid: {
+          left: '5%',
+          right: '5%',
+        },
+        legend: {
+          orient: 'horizontal',
+          bottom: 10,
+        },
+      },
+      echartsOptionsOverridesByChartType: {
+        echarts_pie: {
+          legend: {
+            orient: 'vertical',
+            right: 10,
+          },
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithBothOverrides}>
+        <Echart {...defaultProps} vizType="echarts_pie" />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should work without any theme overrides', () => {
+    const { container } = render(
+      <ThemeProvider theme={mockBaseTheme}>
+        <Echart {...defaultProps} />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should work without vizType prop', () => {
+    const themeWithOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {
+        grid: {
+          left: '5%',
+        },
+      },
+      echartsOptionsOverridesByChartType: {
+        echarts_pie: {
+          legend: {
+            orient: 'vertical',
+          },
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithOverrides}>
+        <Echart {...defaultProps} />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should handle nested object merging correctly', () => {
+    const themeWithNestedOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {
+        xAxis: {
+          axisLabel: {
+            color: '#333',
+            rotate: 0,
+          },
+          splitLine: {
+            show: true,
+          },
+        },
+      },
+    };
+
+    const propsWithAxis = {
+      ...defaultProps,
+      echartOptions: {
+        ...defaultProps.echartOptions,
+        xAxis: {
+          type: 'category',
+          axisLabel: {
+            fontSize: 12,
+          },
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithNestedOverrides}>
+        <Echart {...propsWithAxis} />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should handle empty override objects gracefully', () => {
+    const themeWithEmptyOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {},
+      echartsOptionsOverridesByChartType: {},
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithEmptyOverrides}>
+        <Echart {...defaultProps} vizType="echarts_pie" />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+
+  test('should handle null and undefined values in overrides', () => {
+    const themeWithNullOverrides: SupersetTheme = {
+      ...mockBaseTheme,
+      echartsOptionsOverrides: {
+        grid: {
+          left: null,
+          right: undefined,
+          top: '10%',
+        },
+      },
+    };
+
+    const { container } = render(
+      <ThemeProvider theme={themeWithNullOverrides}>
+        <Echart {...defaultProps} />
+      </ThemeProvider>,
+    );
+
+    expect(container.firstChild).toBeInTheDocument();
+  });
+});
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.tsx
index 88d2b5a9dc..178afb9839 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.tsx
@@ -27,7 +27,7 @@ import {
   Ref,
   useState,
 } from 'react';
-import { merge } from 'lodash';
+import { mergeWith } from 'lodash';
 
 import { useSelector } from 'react-redux';
 
@@ -131,6 +131,7 @@ function Echart(
     zrEventHandlers,
     selectedValues = {},
     refs,
+    vizType,
   }: EchartsProps,
   ref: Ref<EchartsHandler>,
 ) {
@@ -231,10 +232,24 @@ function Echart(
         return echartsTheme;
       };
 
-      const themedEchartOptions = merge(
+      // Custom replacer function to replace arrays instead of merging them
+      const replaceArrays = (objValue: any, srcValue: any) => {
+        if (Array.isArray(srcValue)) {
+          return srcValue; // Replace arrays entirely
+        }
+        // Let lodash handle object merging for non-arrays
+        return undefined;
+      };
+
+      const themedEchartOptions = mergeWith(
         {},
         getEchartsTheme(echartOptions),
         echartOptions,
+        theme.echartsOptionsOverrides || {},
+        vizType
+          ? theme.echartsOptionsOverridesByChartType?.[vizType] || {}
+          : {},
+        replaceArrays,
       );
       chartRef.current?.setOption(themedEchartOptions, true);
     }
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/types.ts b/superset-frontend/plugins/plugin-chart-echarts/src/types.ts
index fe923003b3..33c9cc07b9 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/types.ts
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/types.ts
@@ -55,6 +55,7 @@ export interface EchartsProps {
   selectedValues?: Record<number, string>;
   forceClear?: boolean;
   refs: Refs;
+  vizType?: string;
 }
 
 export interface EchartsHandler {
diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/utils/themeOverrides.test.ts b/superset-frontend/plugins/plugin-chart-echarts/src/utils/themeOverrides.test.ts
new file mode 100644
index 0000000000..7578e80fd4
--- /dev/null
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/utils/themeOverrides.test.ts
@@ -0,0 +1,289 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import { mergeWith } from 'lodash';
+
+describe('Theme Override Deep Merge Behavior', () => {
+  // Custom replacer function to replace arrays instead of merging them
+  const replaceArrays = (objValue: any, srcValue: any) => {
+    if (Array.isArray(srcValue)) {
+      return srcValue; // Replace arrays entirely
+    }
+    // Let lodash handle object merging for non-arrays
+    return undefined;
+  };
+
+  test('should merge nested objects correctly', () => {
+    const baseOptions = {
+      grid: {
+        left: '5%',
+        right: '5%',
+        top: '10%',
+      },
+      xAxis: {
+        type: 'category',
+        axisLabel: {
+          fontSize: 12,
+        },
+      },
+    };
+
+    const globalOverrides = {
+      grid: {
+        left: '10%',
+        bottom: '15%',
+      },
+      xAxis: {
+        axisLabel: {
+          color: '#333',
+          rotate: 45,
+        },
+      },
+    };
+
+    const result = mergeWith({}, baseOptions, globalOverrides, replaceArrays);
+
+    expect(result).toEqual({
+      grid: {
+        left: '10%', // overridden
+        right: '5%', // preserved
+        top: '10%', // preserved
+        bottom: '15%', // added
+      },
+      xAxis: {
+        type: 'category', // preserved
+        axisLabel: {
+          fontSize: 12, // preserved
+          color: '#333', // added
+          rotate: 45, // added
+        },
+      },
+    });
+  });
+
+  test('should replace arrays instead of merging them', () => {
+    const baseOptions = {
+      series: [
+        { name: 'Series 1', type: 'line' },
+        { name: 'Series 2', type: 'bar' },
+      ],
+    };
+
+    const overrides = {
+      series: [{ name: 'New Series', type: 'pie' }],
+    };
+
+    const result = mergeWith({}, baseOptions, overrides, replaceArrays);
+
+    // Arrays are replaced entirely, not merged by index
+    expect(result.series).toEqual([{ name: 'New Series', type: 'pie' }]);
+    expect(result.series).toHaveLength(1);
+  });
+
+  test('should handle null overrides correctly', () => {
+    const baseOptions = {
+      grid: {
+        left: '5%',
+        right: '5%',
+        top: '10%',
+      },
+      tooltip: {
+        show: true,
+        backgroundColor: '#fff',
+      },
+    };
+
+    const overrides = {
+      grid: {
+        left: null,
+        bottom: '20%',
+      },
+      tooltip: {
+        backgroundColor: null,
+        borderColor: '#ccc',
+      },
+    };
+
+    const result = mergeWith({}, baseOptions, overrides, replaceArrays);
+
+    expect(result).toEqual({
+      grid: {
+        left: null, // overridden with null
+        right: '5%', // preserved (undefined values are ignored by lodash merge)
+        top: '10%', // preserved
+        bottom: '20%', // added
+      },
+      tooltip: {
+        show: true, // preserved
+        backgroundColor: null, // overridden with null
+        borderColor: '#ccc', // added
+      },
+    });
+  });
+
+  test('should handle override precedence correctly', () => {
+    const baseTheme = {
+      textStyle: { color: '#000', fontSize: 12 },
+    };
+
+    const pluginOptions = {
+      textStyle: { fontSize: 14 },
+      title: { text: 'Chart Title' },
+    };
+
+    const globalOverrides = {
+      textStyle: { color: '#333' },
+      grid: { left: '10%' },
+    };
+
+    const chartOverrides = {
+      textStyle: { color: '#666', fontWeight: 'bold' },
+      legend: { orient: 'vertical' },
+    };
+
+    // Simulate the merge order in Echart.tsx
+    const result = mergeWith(
+      {},
+      baseTheme,
+      pluginOptions,
+      globalOverrides,
+      chartOverrides,
+      replaceArrays,
+    );
+
+    expect(result).toEqual({
+      textStyle: {
+        color: '#666', // chart override wins
+        fontSize: 14, // from plugin options
+        fontWeight: 'bold', // from chart override
+      },
+      title: { text: 'Chart Title' }, // from plugin options
+      grid: { left: '10%' }, // from global override
+      legend: { orient: 'vertical' }, // from chart override
+    });
+  });
+
+  test('should preserve deep nested structures', () => {
+    const baseOptions = {
+      xAxis: {
+        axisLabel: {
+          textStyle: {
+            color: '#000',
+            fontSize: 12,
+            fontFamily: 'Arial',
+          },
+        },
+      },
+    };
+
+    const overrides = {
+      xAxis: {
+        axisLabel: {
+          textStyle: {
+            color: '#333',
+            fontWeight: 'bold',
+          },
+          rotate: 45,
+        },
+        splitLine: {
+          show: true,
+        },
+      },
+    };
+
+    const result = mergeWith({}, baseOptions, overrides, replaceArrays);
+
+    expect(result).toEqual({
+      xAxis: {
+        axisLabel: {
+          textStyle: {
+            color: '#333', // overridden
+            fontSize: 12, // preserved
+            fontFamily: 'Arial', // preserved
+            fontWeight: 'bold', // added
+          },
+          rotate: 45, // added
+        },
+        splitLine: {
+          show: true, // added
+        },
+      },
+    });
+  });
+
+  test('should handle function values correctly', () => {
+    const formatFunction = (value: any) => `${value}%`;
+    const overrideFunction = (value: any) => `$${value}`;
+
+    const baseOptions = {
+      yAxis: {
+        axisLabel: {
+          formatter: formatFunction,
+        },
+      },
+    };
+
+    const overrides = {
+      yAxis: {
+        axisLabel: {
+          formatter: overrideFunction,
+        },
+      },
+    };
+
+    const result = mergeWith({}, baseOptions, overrides, replaceArrays);
+
+    expect(result.yAxis.axisLabel.formatter).toBe(overrideFunction);
+    expect(result.yAxis.axisLabel.formatter('100')).toBe('$100');
+  });
+
+  test('should handle empty objects and arrays', () => {
+    const baseOptions = {
+      series: [{ name: 'Test', data: [1, 2, 3] }],
+      grid: { left: '5%' },
+    };
+
+    const emptyOverrides = {};
+    const arrayOverride = { series: [] };
+    const objectOverride = { grid: {} };
+
+    const resultEmpty = mergeWith(
+      {},
+      baseOptions,
+      emptyOverrides,
+      replaceArrays,
+    );
+    const resultArray = mergeWith(
+      {},
+      baseOptions,
+      arrayOverride,
+      replaceArrays,
+    );
+    const resultObject = mergeWith(
+      {},
+      baseOptions,
+      objectOverride,
+      replaceArrays,
+    );
+
+    expect(resultEmpty).toEqual(baseOptions);
+    // Empty array completely replaces existing array
+    expect(resultArray.series).toEqual([]);
+    expect(resultObject.grid).toEqual({ left: '5%' });
+  });
+});