eclipse-theia/theia

[plug-in] TreeView layout proportions are very uneven

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#8,003 opened on Jun 12, 2020

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bughelp wantedshellvscode

Description

Bug Description:

By default, the proportions of extension-contributed treeviews are very uneven, some treeviews being disproportionately small, making it very impractical to use the extension. This differs from the default behaviour on VS Code.

Steps to Reproduce:

Running for example the following extension on Theia vs VS Code https://github.com/paritytech/vscode-substrate (vsix ; marketplace)

Additional Information

VS Code image

Theia image

Theia (when revealing the treeviews) image

Also, all the treeviews seem to be expanded by default on VS Code, which doesn't seem to be the case in Theia.

Tested on Chromium & Firefox.

Contributor guide

Tech stack
typescriptcss
Domain
frontend
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
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the layout proportions of extension contributed tree views in Theia. Compare the CSS styling with VS Code's default tree view proportions. Look at the tree view widget implementation in Theia's source code (likely in packages/core/src/browser/tree/). Determine if there is a missing default width or flex property that causes uneven proportions. Consider adding a minimum width or adjusting the flex grow property to match VS Code behavior.