From 3ba357b691939c44f9059e29284e913e4a1b9783 Mon Sep 17 00:00:00 2001
From: Gehongyan <gehongyan1996@126.com>
Date: Thu, 5 Mar 2026 23:16:29 +0800
Subject: [PATCH] Fix TextBox MaxLines property not constraining height in Semi
 theme (#753)

* Initial plan

* Fix TextBox MaxLines property by adding Name=PART_ScrollViewer to ScrollViewer elements

Co-authored-by: gehongyan <21241496+gehongyan@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
---
 src/Semi.Avalonia/Controls/TextBox.axaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Semi.Avalonia/Controls/TextBox.axaml b/src/Semi.Avalonia/Controls/TextBox.axaml
index 3694255..f76022e 100644
--- a/src/Semi.Avalonia/Controls/TextBox.axaml
+++ b/src/Semi.Avalonia/Controls/TextBox.axaml
@@ -59,6 +59,7 @@
                                 Foreground="{DynamicResource TextBoxInnerForeground}"
                                 IsVisible="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=InnerLeftContent, Converter={x:Static ObjectConverters.IsNotNull}}" />
                             <ScrollViewer
+                                Name="PART_ScrollViewer"
                                 Grid.Column="1"
                                 AllowAutoHide="{TemplateBinding (ScrollViewer.AllowAutoHide)}"
                                 HorizontalScrollBarVisibility="{TemplateBinding (ScrollViewer.HorizontalScrollBarVisibility)}"
@@ -292,6 +293,7 @@
                                 Foreground="{DynamicResource TextBoxInnerForeground}"
                                 IsVisible="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=InnerLeftContent, Converter={x:Static ObjectConverters.IsNotNull}}" />
                             <ScrollViewer
+                                Name="PART_ScrollViewer"
                                 Grid.Column="1"
                                 AllowAutoHide="{TemplateBinding (ScrollViewer.AllowAutoHide)}"
                                 HorizontalScrollBarVisibility="{TemplateBinding (ScrollViewer.HorizontalScrollBarVisibility)}"
@@ -512,6 +514,7 @@
                             Foreground="{DynamicResource TextBoxInnerForeground}"
                             IsVisible="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=InnerLeftContent, Converter={x:Static ObjectConverters.IsNotNull}}" />
                         <ScrollViewer
+                            Name="PART_ScrollViewer"
                             Grid.Column="1"
                             AllowAutoHide="{TemplateBinding (ScrollViewer.AllowAutoHide)}"
                             HorizontalScrollBarVisibility="{TemplateBinding (ScrollViewer.HorizontalScrollBarVisibility)}"