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Fix chat auto-scroll to show assistant response from start

Keep user messages pinned to the bottom, but align new assistant replies to the top of the visible chat area so long responses open at their beginning instead of the end.

Co-authored-by: Cursor <cursoragent@cursor.com>
AhtashamShahzad1 2 月之前
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610f7979d7
共有 1 个文件被更改,包括 27 次插入2 次删除
  1. 27 2
      App for Indeed/Views/DashboardView.swift

+ 27 - 2
App for Indeed/Views/DashboardView.swift

@@ -1564,9 +1564,16 @@ final class DashboardView: NSView, NSTextFieldDelegate {
         }
         DispatchQueue.main.async { [weak self] in
             guard let self else { return }
+            let scroll: () -> Void = {
+                if isUser {
+                    self.scrollChatToBottom()
+                } else {
+                    self.scrollChatToShowTopOfView(host)
+                }
+            }
             if self.prefersReducedMotion {
                 self.updateChatBubbleWidths()
-                self.scrollChatToBottom()
+                scroll()
                 return
             }
             NSAnimationContext.runAnimationGroup { ctx in
@@ -1575,7 +1582,7 @@ final class DashboardView: NSView, NSTextFieldDelegate {
                 host.animator().alphaValue = 1
             }
             self.updateChatBubbleWidths()
-            self.scrollChatToBottom()
+            scroll()
         }
     }
 
@@ -1746,6 +1753,24 @@ final class DashboardView: NSView, NSTextFieldDelegate {
         chatScrollView.reflectScrolledClipView(chatScrollView.contentView)
     }
 
+    /// Scrolls so the top of `view` sits at the top of the chat clip (flipped document coords). Long assistant replies stay readable from the first line instead of jumping to the end.
+    private func scrollChatToShowTopOfView(_ view: NSView) {
+        chatDocumentView.layoutSubtreeIfNeeded()
+        view.layoutSubtreeIfNeeded()
+        let doc = chatDocumentView
+        let visibleHeight = chatScrollView.contentView.bounds.height
+        let docHeight = doc.bounds.height
+        guard docHeight > 0, visibleHeight > 0 else {
+            scrollChatToBottom()
+            return
+        }
+        let rectInDoc = view.convert(view.bounds, to: doc)
+        let maxY = max(0, docHeight - visibleHeight)
+        let targetY = min(max(0, rectInDoc.minY), maxY)
+        chatScrollView.contentView.scroll(to: NSPoint(x: 0, y: targetY))
+        chatScrollView.reflectScrolledClipView(chatScrollView.contentView)
+    }
+
     private func addInlineChatThinkingRow() {
         removeInlineChatThinkingRow()
         let host = NSView()