palantir/blueprint

Blueprint table scrolling problem when using keyboard

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#3,835 opened on Nov 11, 2019

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 (0 comments) (0 reactions) (0 assignees)TypeScript (20,263 stars) (2,167 forks)batch import
P2Package: tableType: bughelp wanted

Description

Environment

  • Package version(s): Blueprint table 3.8.1
  • Browser and OS versions: Chrome

If possible, link to a minimal repro (fork this code sandbox): https://codesandbox.io/s/blueprint-sandbox-jt7py

Steps to reproduce

  1. Create blueprint table with enough columns so there is a horizontal scrollbar
  2. Move the selection to the last column using the keyboard (shift or arrow keys)
  3. Move the selection back to the first column also using the keyboard

Actual behavior

The scrollbar does not go back all the way - as you can see in the linked repo for example, when you scroll back to the start, the 'A' of the column name is cut off and you can't scroll further without using the mouse.

Expected behavior

Scrollbar should return to original position without having to use the mouse - this is an accessibility issue.

Contributor guide

Tech stack
typescriptreact
Domain
frontendaccessibility
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
React basicsTypeScript basicsBlueprint Table component
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the keyboard scroll behavior in the Blueprint Table component. Look at the source code in packages/table/src for scroll handling, particularly functions that adjust scroll position when selecting cells via keyboard. Check for any existing tests related to keyboard navigation. The sandbox provided (https://codesandbox.io/s/blueprint sandbox jt7py) can be used to reproduce. Consider adding or fixing logic to ensure horizontal scroll returns to origin when keyboard selection moves left.