[fix] st.chat_input collapses after submit#12132
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Pull Request Overview
This PR fixes a regression in st.chat_input where the input field wasn't collapsing back to its compact state after message submission. The fix restores the auto-expand functionality by re-introducing logic to reset the textarea height after form submission.
Key changes:
- Extended the
useTextInputAutoExpandhook to provide aclearScrollHeightfunction - Added a call to reset the scroll height in the ChatInput component's submit handler
- Added comprehensive e2e tests to verify the height reset behavior
Reviewed Changes
Copilot reviewed 3 out of 12 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
frontend/lib/src/hooks/useTextInputAutoExpand.ts |
Added clearScrollHeight function to reset textarea scroll height to 0 |
frontend/lib/src/components/widgets/ChatInput/ChatInput.tsx |
Added call to clearScrollHeight() in submit handler to reset input height |
e2e_playwright/st_chat_input_test.py |
Added e2e test to verify chat input height resets properly after submission |
| chat_input = app.get_by_test_id("stChatInput").nth(0) | ||
| chat_input_area = chat_input.locator("textarea") | ||
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| assert_snapshot(chat_input, name="st_chat_input-initial_compact_state") |
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The snapshot naming follows the recommended convention 'st_command-test_description' as specified in the coding guidelines.
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## Describe your changes This PR addresses a regression where the logic for resetting the height of `st.chat_input` after submission was broken by some refactoring. It re-introduces the code to reset the scroll height to 0 after submit. The PR also adds an e2e test for the user interaction. <!-- If it's a visual change, please include a screenshot or video! --> ## GitHub Issue Link (if applicable) Fixes #12079 ## Testing Plan - E2E Tests ✅ --- **Contribution License Agreement** By submitting this pull request you agree that all contributions to this project are made under the Apache 2.0 license.
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Describe your changes
This PR addresses a regression where the logic for resetting the height of
st.chat_inputafter submission was broken by some refactoring. It re-introduces the code to reset the scroll height to 0 after submit. The PR also adds an e2e test for the user interaction.GitHub Issue Link (if applicable)
Fixes #12079
Testing Plan
Contribution License Agreement
By submitting this pull request you agree that all contributions to this project are made under the Apache 2.0 license.