From c6a5dfd45df00906ab562561d9e71f35eb4aba44 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Fri, 30 Oct 2026 04:43:13 +0000
Subject: [PATCH] Decompile 2 functions in Source/UI/Buttons/UITextButton.cpp,
 Source/UI/Lists/UITreeView.h

Batch #4735 by eAthena: 0 byte-identical, 2 confirmed by peer review.

- fn_11538 UITreeView::Resize: logic confirmed by peer review
- fn_11516 UITreeView::Slot53: logic confirmed by peer review

Peer-reviewed-by: alisonrag, youko
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
---
 Source/UI/Buttons/UITextButton.cpp | 27 +++++++++++++++++++++++++++
 Source/UI/Lists/UITreeView.h       |  7 ++++++-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/Source/UI/Buttons/UITextButton.cpp b/Source/UI/Buttons/UITextButton.cpp
index 96623564..3d7f7677 100644
--- a/Source/UI/Buttons/UITextButton.cpp
+++ b/Source/UI/Buttons/UITextButton.cpp
@@ -1010,6 +1010,33 @@ void UITreeView::Slot35(int value) {
   }
 }
 
+// OFFSET: 0x00897A10
+// FUNCTION: fn_11538
+void UITreeView::Resize(int width, int height) {
+  UIWindow::Resize(width, height);
+  this->verticalBar->Move(this->geometry.width - 10, 0);
+  this->verticalBar->Resize(this->verticalBar->geometry.width, height);
+  this->Slot53();
+}
+
+// OFFSET: 0x008961F0
+// FUNCTION: fn_11516
+void UITreeView::Slot53() {
+  const int visible = this->geometry.height / this->itemHeight;
+  const int count = this->itemCount;
+  const int excess = count - visible;
+  const int overflow = excess < 0 ? 0 : excess;
+  this->verticalOverflow = overflow != 0;
+  this->verticalBar->SetRange(overflow, visible, count);
+
+  if (!overflow) {
+    this->unknown_00A8 = 0;
+    this->itemCount = 0;
+  }
+
+  this->verticalBar->Invalidate();
+}
+
 // OFFSET: 0x00892F90
 // FUNCTION: fn_11502
 void UITabControl::FillTab(int index, int x, int y, int width, int height, std::uint32_t color) {
diff --git a/Source/UI/Lists/UITreeView.h b/Source/UI/Lists/UITreeView.h
index 9df49741..ae746b11 100644
--- a/Source/UI/Lists/UITreeView.h
+++ b/Source/UI/Lists/UITreeView.h
@@ -7,10 +7,12 @@ class UIScrollBar;
 
 class UITreeView : public UIWindow {
 public:
+  void Resize(int width, int height) override;
   void Slot25(int x, int y) override;
   void Slot27(int x, int y) override;
   void Slot31(int x, int y) override;
   void Slot35(int value) override;
+  virtual void Slot53();
 
 protected:
   /* 007C */ UIScrollBar* verticalBar;
@@ -19,7 +21,10 @@ protected:
   /* 0088 */ int unknown_0088;
   /* 008C */ int unknown_008C;
   /* 0090 */ int unknown_0090;
-  /* 0094 */ unsigned char unknown_0094[0x18];
+  /* 0094 */ unsigned char unknown_0094[0xC];
+  /* 00A0 */ int itemHeight;
+  /* 00A4 */ int itemCount;
+  /* 00A8 */ int unknown_00A8;
   /* 00AC */ unsigned char unknown_00AC;
 };