angular-ui/ui-grid

Virtualize column headers even when there's no data

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#4,019 opened on Jul 21, 2015

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help wantedneeds: analysis

Description

Hi. When a grid is built with no data, but only with the definition of the columns, virtualization of them does not function. All columns are rendered in the DOM. Virtualization begins to function in the right way only after horizontal scrolling. This is the example http://plnkr.co/edit/eEIvq9KPNE2XCOc6udzf Any ideas? Marco

Contributor guide

Tech stack
javascripthtmlcss
Domain
frontendperformance
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.
1-2 days
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.
mostly clear
Prerequisites
basic AngularJSvirtual scrolling concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Review the plunkr example provided. Investigate the grid initialization code to understand why column headers are not virtualized when data is empty. Look at the virtualization logic in the column header renderer. Check for similar issues or PRs. The fix may involve ensuring the virtual scroll container is sized correctly even without data rows.