Provide a keyboard alternative to chart range brushing
Selecting a chart interval requires dragging across the plot. Add equivalent start/end interval controls.
- Focused work estimate
- 3h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Keyboard · Data visualization
Estimated field mix
- Accessibility60%
- Frontend40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
Fictional cooperative Quarry reviews synthetic service-volume reports. Build local report fixtures with empty, missing and delayed values.
Setup prerequisites
- Create synthetic report series with explicit missing values.
- Stub report loading, sorting and export responses.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- CTABLE-101 · Give report charts a textual trend summary
- CTABLE-102 · Preserve table header associations in the reporting workbench
- CTABLE-103 · Represent missing report observations distinctly from zero
- CTABLE-104 · Expose report sorting through semantic header buttons
- CTABLE-105 · Keep report filter errors near their controls
Acceptance criteria
- Controls select the same range
- Selection is visible in table
- Out-of-range values explain limits
Implementation constraints
- Keep brushing optional.
Verification to include
- Select identical range both ways
- Enter range outside data
Deliverables
- Range selector and equivalence tests
Rollout and recovery
Disable brushing if it diverges from controls.
Value of the work
For the engineer: Practice semantic data presentation and robust interaction.
For the team: Inspect whether reporting decisions remain possible without color or pointer use.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.