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fix: improve chat auto-scroll detection with IntersectionObserver #657

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zerob13 merged 2 commits into from
Jul 29, 2025
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fix: improve chat auto-scroll detection with IntersectionObserver #657

zerob13 merged 2 commits into from
Jul 29, 2025

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@yyhhyyyyyy yyhhyyyyyy commented Jul 29, 2025 •
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Fix chat auto-scroll detection issues by replacing debounced scroll event with IntersectionObserver.

Summary by CodeRabbit

  • Refactor

    • Improved scroll detection in the chat message list for more reliable behavior using IntersectionObserver.
    • Simplified message sending logic to always scroll to the bottom, removing previous conditional checks.

  • Chores

    • Added necessary imports and lifecycle management for improved code maintainability.

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coderabbitai bot commented Jul 29, 2025 •
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Walkthrough

The changes refactor scroll position detection in the chat message list by replacing manual scroll event handling with an IntersectionObserver, update the internal logic for message sending to always scroll to the bottom, and add an import for DefineLocaleMessage in type declarations. No public APIs or exported entities were modified.

Changes

Cohort / File(s) Change Summary
Chat Send Logic Refactor
src/renderer/src/components/ChatView.vue		 Simplified handleSend by removing logic tied to aboveThreshold; now always scrolls to bottom before and after sending a message, eliminating conditional scroll checks.
Scroll Detection Refactor
src/renderer/src/components/message/MessageList.vue		 Replaced debounced scroll event handling with an IntersectionObserver to track if the bottom anchor is visible; updated lifecycle hooks for observer setup and cleanup; removed manual scroll calculations and debounce utility.
Type Declaration Import Addition
src/types/i18n.d.ts		 Added import for DefineLocaleMessage from 'vue-i18n'; no other changes made.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant ChatView
    participant MessageList
    participant IntersectionObserver

    User->>ChatView: Send message
    ChatView->>MessageList: scrollToBottom()
    ChatView->>MessageList: Add message
    ChatView->>MessageList: scrollToBottom()
    MessageList->>IntersectionObserver: Observe scrollAnchor
    IntersectionObserver-->>MessageList: Update aboveThreshold (on intersection)
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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Suggested reviewers

  • zerob13

Poem

A bunny hopped and watched the scroll,
No more thresholds to patrol.
An Observer now keeps watch with care,
So messages land where they should—right there!
Quotation marks now shining bright,
The code feels tidy, clean, and light.
🐇✨

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Reviewing files that changed from the base of the PR and between fd3e6d6 and f00ed51.

📒 Files selected for processing (1)
  • src/types/i18n.d.ts (1 hunks)
✅ Files skipped from review due to trivial changes (1)
  • src/types/i18n.d.ts
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@zerob13 zerob13 merged commit a26907c into ThinkInAIXYZ:dev Jul 29, 2025
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@yyhhyyyyyy @zerob13