# BaseFeatureWidget Auto-generated from the @jbrowse/mobx-state-tree model in the source — see the [developer guide](https://jbrowse.org/jb2/docs/developer_guide/) for concepts. Built into JBrowse core. [View source](https://github.com/GMOD/jbrowse-components/blob/main/packages/core/src/BaseFeatureWidget/stateModelFactory.ts). The feature-details panel. `featureData` is the clicked feature with the track's and the session's `formatDetails` callbacks applied, derived on read from the raw feature the widget was opened with, so the same widget follows a config edit and survives its track being closed. ## Properties | Member | Description | | --- | --- | | **id**
id: ElementId | | | **type**
type: types.literal('BaseFeatureWidget') | | | **unformattedFeatureData**
unformattedFeatureData: types.optional( types.frozen<MaybeSerializedFeat>(), undefined, ) | the feature as the click handed it over, before any callback ran. Persisted as `featureData` | | **view**
view: types.safeReference( pluginManager.pluggableMstType('view', 'stateModel'), ) | | | **track**
track: types.safeReference( pluginManager.pluggableMstType('track', 'stateModel'), ) | | | **trackId**
trackId: types.maybe(types.string) | | | **trackType**
trackType: types.maybe(types.string) | | | **sequenceFeatureDetails**
sequenceFeatureDetails: types.optional(SequenceFeatureDetailsF(), {}) | | | **descriptions**
descriptions: types.optional( types.frozen<Descriptors | undefined>(), undefined, ) | | | **parentFeature**
parentFeature: types.optional( types.frozen<ParentFeatureSummary | undefined>(), undefined, ) | names the feature this one was reached through, when it was reached through one -- a transcript clicked inside its gene | ## Volatiles | Member | Description | | --- | --- | | **sequenceHoverPosition**
SequenceHoverPosition | undefined | genomic base currently hovered in this widget's sequence panel, read by the LGV crosshair overlay | ## Getters | Member | Description | | --- | --- | | **trackConfiguration**
AnyConfigurationModel | undefined | the config the track tier of `formatDetails` reads. The open track's own while it is open; after it is closed, the session's copy of the same config, which is why the widget records `trackId` | | **formatDetailsTiers**
FormatDetailsTiers | | | **formatted**
{ feature?: SimpleFeatureSerialized | undefined; error?: Error | undefined; } | | | **canonicalTranscripts**
CanonicalTranscripts | the isoform tags the open track's display ranks by, so the sequence panel opens on the transcript the track draws first | | **maxDepth**
number | undefined | levels of subfeature card the panel renders; unset means no limit | | **featureData**
SimpleFeatureSerialized | undefined | the feature with every `formatDetails` callback applied | | **error**
Error | undefined | | ## Actions | Member | Description | | --- | --- | | **setSequenceHoverPosition**
(pos: SequenceHoverPosition | undefined) => void | | | **setFeatureData**
(featureData: SimpleFeatureSerialized) => void | | | **clearFeatureData**
() => void | |