feat: add model selector UI to chat - #1517
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Add a model selector to the chat input area, letting users pick a model directly from chat instead of going through settings. Adds i18n translations for the selector across all supported locales. Co-Authored-By: JunyongParkDev <shewco3@gmail.com> Signed-off-by: daewoongoh <dw.oh@samsung.com> Signed-off-by: JunyongParkDev <jun94.park@samsung.com>
Add tests covering router-model fetch args, tooltip content, search matching by displayName, and search-threshold boundaries; mark a few genuinely equivalent branches with narrow Stryker exclusions.
Add rerender-based tests for stale-memoization scenarios (model list changes, selection changes, config name changes) and a search test that distinguishes a raw id from a self-duplicated id string.
Restructure handleEditClick's useCallback so the deps-array disable comment sits directly above the array on its own line, matching the pattern already used for handleSelect; the previous placement (right before the callback's closing brace) wasn't recognized by Stryker's comment-attachment logic.
The new ModelSelector button adds a tab stop, so the focus test's 10-press budget no longer reaches the textarea (it now needs an 11th). Bump it to 15 for headroom and regenerate the resting/focus screenshots to include the new model selector button.
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September 4, 2026 07:50
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📝 SummarySummary by CodeRabbit
WalkthroughThe chat toolbar now includes a model selector. It supports static and dynamic providers, searchable model lists, unsupported-provider settings fallback, configuration updates, tests, and localized text. ChangesChat model selection
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to Keyboard users cannot use the new inline model selector, while dynamic providers briefly show an incorrect Settings fallback. These issues should be fixed before merge. Sequence Diagram(s)sequenceDiagram
participant ChatTextArea
participant ModelSelector
participant useRouterModels
participant VSCode
ChatTextArea->>ModelSelector: Render with API configuration
ModelSelector->>useRouterModels: Load dynamic provider models
ModelSelector->>VSCode: Post upsertApiConfiguration after selection
Caution Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional.
❌ Failed checks (1 error, 1 warning)
✅ Passed checks (5 passed)
Full details: Regression EvidenceExplanation The new selector has focused coverage for dynamic/static lists, search, unsupported providers, selection updates, rerenders, and the chat-composer snapshots. However, Resolution Add a Full details: Trust And Persistence InvariantsExplanation The new chat path bypasses the organization model allowlist. Resolution Pass ✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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The new ModelSelector button in the chat toolbar shows up in the sidebar screenshot captured by the real VS Code Extension Host visual test; regenerate the chat-dark baseline to match.
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Actionable comments posted: 3
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Inline comments:
In `@webview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx`:
- Around line 29-30: Update the ModelSelector test fixtures, including
useRouterModelsMock and mock component props, to use the existing RouterModels,
ProviderSettings, and precise React prop types instead of Record<string, any> or
any. Replace as any configuration casts with typed fixtures, and document any
unavoidable cast at its usage.
In `@webview-ui/src/components/chat/ModelSelector.tsx`:
- Line 85: Update the ModelSelector support-state logic to use the
useRouterModels isLoading state: keep dynamic providers treated as loading while
their model list is unresolved, rather than marking them unsupported and
rendering the Settings fallback. Preserve the settled empty-list behavior, and
add a regression test covering the loading trigger before dynamic models
resolve.
- Around line 168-183: Update the model-selection rows and clear action in
ModelSelector to use keyboard-operable button elements with accessible names,
while preserving their existing click behavior and styling. Ensure each model
button identifies its model and the clear control has a clear accessible name,
then add a keyboard interaction test covering model selection and clearing.
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⛔ Files ignored due to path filters (8)
webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-dark.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-high-contrast-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-high-contrast.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-dark.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-high-contrast-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-high-contrast.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**
📒 Files selected for processing (23)
webview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsxwebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonwebview-ui/src/i18n/locales/es/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonwebview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.json
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⚠️ CI failures not shown inline (2)
GitHub Actions: Visual Regression / 1_extension-host-visual.txt: feat: add model selector UI to chat
Conclusion: failure
-ui/build/assets/pascal-4ZHwLPI5.js 4.18 kB │ map: 5.53 kB
../src/webview-ui/build/assets/fish-D_7hXPPf.js 4.21 kB │ map: 5.69 kB
../src/webview-ui/build/assets/diagram-LBJQPF4R-lbYW_55v.js 4.32 kB │ map: 12.39 kB
../src/webview-ui/build/assets/bicep-CBtovdkV.js 4.34 kB │ map: 6.41 kB
../src/webview-ui/build/assets/http-quk4oXHJ.js 4.45 kB │ map: 6.69 kB
../src/webview-ui/build/assets/tcl-CZd0xW_V.js 4.46 kB │ map: 6.48 kB
../src/webview-ui/build/assets/defaultLocale-C8Fc0cco.js 4.69 kB │ map: 21.28 kB
../src/webview-ui/build/assets/polar-C7UOKdEL.js 4.70 kB │ map: 7.25 kB
../src/webview-ui/build/assets/sdbl-bTVj8UrX.js 4.73 kB │ map: 5.89 kB
../src/webview-ui/build/assets/fennel-DQxkIbk2.js 4.80 kB │ map: 6.42 kB
../src/webview-ui/build/assets/bibtex-Ci_nEsc7.js 4.83 kB │ map: 7.02 kB
../src/webview-ui/build/assets/llvm-DwarZtGh.js 5.05 kB │ map: 6.64 kB
../src/webview-ui/build/assets/map-DsCK-0Cs.js 5.07 kB │ map: 36.88 kB
../src/webview-ui/build/assets/wgsl-BsKzXJz4.js 5.17 kB │ map: 7.50 kB
../src/webview-ui/build/assets/gdresource-B2bHe7-M.js 5.30 kB │ map: 7.70 kB
../src/webview-ui/build/assets/qml-BvJd3zdH.js 5.37 kB │ map: 8.13 kB
../src/webview-ui/build/assets/dax-BkyTk9wS.js 5.39 kB │ map: 6.76 kB
../src/webview-ui/build/assets/zig-CFukrmCJ.js 5.40 kB │ map: 7.89 kB
../src/webview-ui/build/assets/xml-DzUK0Pry.js 5.49 kB │ map: 7.84 k...
GitHub Actions: Visual Regression / extension-host-visual: feat: add model selector UI to chat
Conclusion: failure
-ui/build/assets/pascal-4ZHwLPI5.js 4.18 kB │ map: 5.53 kB
../src/webview-ui/build/assets/fish-D_7hXPPf.js 4.21 kB │ map: 5.69 kB
../src/webview-ui/build/assets/diagram-LBJQPF4R-lbYW_55v.js 4.32 kB │ map: 12.39 kB
../src/webview-ui/build/assets/bicep-CBtovdkV.js 4.34 kB │ map: 6.41 kB
../src/webview-ui/build/assets/http-quk4oXHJ.js 4.45 kB │ map: 6.69 kB
../src/webview-ui/build/assets/tcl-CZd0xW_V.js 4.46 kB │ map: 6.48 kB
../src/webview-ui/build/assets/defaultLocale-C8Fc0cco.js 4.69 kB │ map: 21.28 kB
../src/webview-ui/build/assets/polar-C7UOKdEL.js 4.70 kB │ map: 7.25 kB
../src/webview-ui/build/assets/sdbl-bTVj8UrX.js 4.73 kB │ map: 5.89 kB
../src/webview-ui/build/assets/fennel-DQxkIbk2.js 4.80 kB │ map: 6.42 kB
../src/webview-ui/build/assets/bibtex-Ci_nEsc7.js 4.83 kB │ map: 7.02 kB
../src/webview-ui/build/assets/llvm-DwarZtGh.js 5.05 kB │ map: 6.64 kB
../src/webview-ui/build/assets/map-DsCK-0Cs.js 5.07 kB │ map: 36.88 kB
../src/webview-ui/build/assets/wgsl-BsKzXJz4.js 5.17 kB │ map: 7.50 kB
../src/webview-ui/build/assets/gdresource-B2bHe7-M.js 5.30 kB │ map: 7.70 kB
../src/webview-ui/build/assets/qml-BvJd3zdH.js 5.37 kB │ map: 8.13 kB
../src/webview-ui/build/assets/dax-BkyTk9wS.js 5.39 kB │ map: 6.76 kB
../src/webview-ui/build/assets/zig-CFukrmCJ.js 5.40 kB │ map: 7.89 kB
../src/webview-ui/build/assets/xml-DzUK0Pry.js 5.49 kB │ map: 7.84 k...
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Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.
⚙️ CodeRabbit configuration file
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.
⚙️ CodeRabbit configuration file
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
Check React state and effect dependencies, cleanup, accessibility, i18n, and light/dark theme behavior.
⚙️ CodeRabbit configuration file
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonwebview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonwebview-ui/src/i18n/locales/es/chat.jsonwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
Act as an adversarial second-opinion reviewer.
⚙️ CodeRabbit configuration file
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonwebview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonwebview-ui/src/i18n/locales/es/chat.jsonwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
Add focused tests for UI binding and save behavior, persistence or normalization, and the value returned by `getStateToPostToWebview()`, including true and false/unset cases when defaults could hide omissions.
📄 CodeRabbit inference engine (AGENTS.md)
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
Fix lint violations in new TypeScript code instead of suppressing them.
📄 CodeRabbit inference engine (AGENTS.md)
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx
🔇 Additional comments (11)
webview-ui/src/i18n/locales/en/chat.json (1)
143-144: LGTM!webview-ui/src/i18n/locales/ca/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/de/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/es/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/fr/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/hi/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/id/chat.json (1)
146-147: LGTM!webview-ui/src/i18n/locales/it/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/ja/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/ko/chat.json (1)
116-117: LGTM!webview-ui/src/i18n/locales/nl/chat.json (1)
116-117: LGTM!
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Update electron-chat-dark-sidebar.png with the authoritative snapshot generated by the pinned CI/Xvfb runner to resolve the font rendering mismatch.
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Related GitHub Issue
Closes: #1502
Description
Adds a
ModelSelectorto the chat input toolbar so users can pick a model directly from chat instead of going through Settings.ModelSelectorcomponent (webview-ui/src/components/chat/ModelSelector.tsx), mounted inChatTextAreanext to the existingModeSelector/ApiConfigSelector.useRouterModels, static-model providers viagetStaticModelsForProvider.selectModelUnsupportedtooltip that points back to Settings instead of hiding or breaking the control.Fzffor search once the model list is long enough (SEARCH_THRESHOLD).selectModel/selectModelUnsupportedi18n strings tochat.jsonfor all supported locales.Test Procedure
webview-ui/src/components/chat/__tests__/ModelSelector.spec.tsxcovering supported/unsupported providers, dynamic vs. static model lists, and search behavior.Pre-Submission Checklist
*.visual.tsxsnapshot inwebview-ui/. Seewebview-ui/AGENTS.md→ "When a UI change needs a snapshot".Documentation Updates
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