eclipse-theia/theia

theming: support theming customizations through the preferences

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#8,060 opened on Jun 19, 2020

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 (4 comments) (8 reactions) (0 assignees)TypeScript (18,676 stars) (2,478 forks)batch import
enhancementhelp wantedpreferencestheming

Description

Feature Description:

The goal is to support customization of the theme through the preferences (settings.json). With this ability, end-users can easily customize their application's theme (such as the editor), in order to meet their needs and taste.

For example, I use the following theming customizations in my own vscode app (user settings):

"workbench.colorCustomizations": {
  "activityBar.background": "#181818",
  "editor.background": "#1D1D1D",
  "menu.background": "#222222",
  "panel.background": "#222222",
  "sideBar.background": "#1A1A1A",
  "statusBar.background": "#181818"
}

I'd like to see such customziations possible from the framework one day :smiley:

Contributor guide

Tech stack
typescriptcss
Domain
frontenddesign
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.
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.
clear
Prerequisites
Theia extension modelCSS theming concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
The issue requests theme customization via settings.json. Start by exploring how Theia currently defines themes and handles user preferences. Look at the theming module (likely under packages/plugin or packages/core) and the preferences service. Investigate how VSCode's workbench.colorCustomizations works and consider a similar approach. Implement a new preference that allows color overrides and merge them with the active theme. Provide a way to validate and apply these customizations.