bito-code-review[bot] commented on PR #35777:
URL: https://github.com/apache/superset/pull/35777#issuecomment-3430166778
<details open>
<summary><strong>Interaction Diagram by <a
href="https://bito.ai#sequence_diagram";>Bito</a></strong></summary>
```mermaid
sequenceDiagram
participant USER as User
participant DASH as Dashboard
participant CHART as Chart Component
participant RENDERER as ChartRenderer<br/>🔄 Updated | ●●● High
participant STORAGE as LocalStorage Helpers<br/>🔄 Updated | ●●○ Medium
participant SUPER as SuperChart
participant BROWSER as Browser Storage
Note over RENDERER: Legend persistence added<br/>Saves state & scroll
position
USER->>DASH: Interact with dashboard
DASH->>CHART: Render chart component
CHART->>RENDERER: Initialize with chartId
RENDERER->>STORAGE: getItem(legend keys)
STORAGE->>BROWSER: Retrieve saved legend state
BROWSER-->>STORAGE: Return legend data
STORAGE-->>RENDERER: Provide saved state
RENDERER->>SUPER: Render with legend state
SUPER-->>RENDERER: Legend state changed
RENDERER->>STORAGE: setItem(legend state)
STORAGE->>BROWSER: Persist legend changes
```
Critical path: Dashboard->Chart
Component->ChartRenderer->LocalStorage Helpers->Browser Storage
> **Note:** ChartRenderer now persists legend state and scroll position to
localStorage per chart ID. This enables legend state to survive page refreshes
and navigation, improving user experience by maintaining chart legend
preferences across sessions.
</details>
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