From 4922c5f0dd5248dbf2b4e91dc1083d823a89cea0 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sun, 6 Apr 2008 15:14:25 +0000
Subject: [PATCH] reset m_selection in DeleteAllPages() (patch 1922215); some
 cleanup of DoRemovePage() in trunk

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53045 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/generic/choicbkg.cpp | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/generic/choicbkg.cpp b/src/generic/choicbkg.cpp
index 91306d1235..ccc51e049d 100644
--- a/src/generic/choicbkg.cpp
+++ b/src/generic/choicbkg.cpp
@@ -259,28 +259,28 @@ wxChoicebook::InsertPage(size_t n,
 
 wxWindow *wxChoicebook::DoRemovePage(size_t page)
 {
-    const size_t page_count = GetPageCount();
     wxWindow *win = wxBookCtrlBase::DoRemovePage(page);
 
     if ( win )
     {
         GetChoiceCtrl()->Delete(page);
 
-        if (m_selection >= (int)page)
+        if ( m_selection >= (int)page )
         {
-            // force new sel valid if possible
-            int sel = m_selection - 1;
-            if (page_count == 1)
+            // ensure that the selection is valid
+            int sel;
+            if ( GetPageCount() == 0 )
                 sel = wxNOT_FOUND;
-            else if ((page_count == 2) || (sel == -1))
-                sel = 0;
+            else
+                sel = m_selection ? m_selection - 1 : 0;
 
-            // force sel invalid if deleting current page - don't try to hide it
-            m_selection = (m_selection == (int)page) ? wxNOT_FOUND : m_selection - 1;
+            // if deleting current page we shouldn't try to hide it
+            m_selection = m_selection == (int)page ? wxNOT_FOUND
+                                                   : m_selection - 1;
 
-            if ((sel != wxNOT_FOUND) && (sel != m_selection))
+            if ( sel != wxNOT_FOUND && sel != m_selection )
                 SetSelection(sel);
-           }
+        }
     }
 
     return win;
@@ -289,6 +289,7 @@ wxWindow *wxChoicebook::DoRemovePage(size_t page)
 
 bool wxChoicebook::DeleteAllPages()
 {
+    m_selection = wxNOT_FOUND;
     GetChoiceCtrl()->Clear();
     return wxBookCtrlBase::DeleteAllPages();
 }
-- 
2.45.2