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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

Enterprise Open source

PanelTypeChangedHandler type

PanelTypeChangedHandler type

Called before a panel is initialized. Allows panel inspection for any updates before changing the panel type.

Signature

typescript
export declare type PanelTypeChangedHandler<TOptions = any> = (panel: PanelModel<TOptions>, prevPluginId: string, prevOptions: Record<string, any>, prevFieldConfig: FieldConfigSource) => Partial<TOptions>;

Import

typescript
import { PanelTypeChangedHandler } from '@grafana/data';