palantir/blueprint

Implementing "safe polygon" for nested menu items

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#6585 opened on Dec 4, 2023

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 (1 comment) (7 reactions) (0 assignees)TypeScript (20,263 stars) (2,167 forks)batch import
Status: needs proposalType: enhancementhelp wanted

Description

Environment

  • Package version(s): N/A
  • Browser and OS versions: N/A

Feature request

The supersceding library to popper.js (floating-ui) has this feature built in, but the idea is to make better guarantees about where a user can safely move their mouse without dismissing the popover accidentally & expose this on the public API. See:

Examples

image

Contributor guide

Tech stack
typescriptreact
Domain
frontendaccessibility
Issue type
feature
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.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
ReactTypeScriptContext menus concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Start by reading the floating ui documentation on safe polygon and the Smashing Magazine article. Explore the Blueprint codebase, particularly the popover and menu components (likely in packages/popover/ and packages/menu/). Understand the current behavior when hovering between nested menu items. Then propose an implementation that computes a safe polygon area around the menu items to prevent accidental dismissal. Consider the public API changes needed to expose this feature. Look for existing issues or discussions for additional context.