X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bb08a4a194a81dce7a08a642060b044a2a19d148..4fca6ee1a6af3953687a9508f134aef0b7243cb3:/src/generic/choicbkg.cpp

diff --git a/src/generic/choicbkg.cpp b/src/generic/choicbkg.cpp
index 7620db21e9..15390adec2 100644
--- a/src/generic/choicbkg.cpp
+++ b/src/generic/choicbkg.cpp
@@ -50,6 +50,13 @@ const wxCoord MARGIN = 5;
 // various wxWidgets macros
 // ----------------------------------------------------------------------------
 
+// check that the page index is valid
+#define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())
+
+// ----------------------------------------------------------------------------
+// event table
+// ----------------------------------------------------------------------------
+
 IMPLEMENT_DYNAMIC_CLASS(wxChoicebook, wxControl)
 IMPLEMENT_DYNAMIC_CLASS(wxChoicebookEvent, wxNotifyEvent)
 
@@ -137,7 +144,8 @@ wxRect wxChoicebook::GetPageRect() const
 {
     const wxSize sizeChoice = m_choice->GetSize();
 
-    wxRect rectPage(wxPoint(0, 0), GetClientSize());
+    wxPoint pt(0, 0);
+    wxRect rectPage(pt, GetClientSize());
     switch ( GetWindowStyle() & wxCHB_ALIGN_MASK )
     {
         default:
@@ -282,25 +290,37 @@ int wxChoicebook::GetSelection() const
 
 int wxChoicebook::SetSelection(size_t n)
 {
-    wxCHECK_MSG( n < GetPageCount(), wxNOT_FOUND,
-                 _T("invalid page index in wxChoicebook::SetSelection()") );
+    wxCHECK_MSG( IS_VALID_PAGE(n), wxNOT_FOUND,
+                 wxT("invalid page index in wxChoicebook::SetSelection()") );
 
-    const int selOld = m_selection;
+    const int oldSel = m_selection;
 
-    if ( (int)n != m_selection )
+    if ( int(n) != m_selection )
     {
-        if ( m_selection != wxNOT_FOUND )
-            m_pages[m_selection]->Hide();
-        wxWindow *page = m_pages[n];
-        page->SetSize(GetPageRect());
-        page->Show();
+        wxChoicebookEvent event(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING, m_windowId);
+        event.SetSelection(n);
+        event.SetOldSelection(m_selection);
+        event.SetEventObject(this);
+        if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
+        {
+            if ( m_selection != wxNOT_FOUND )
+                m_pages[m_selection]->Hide();
 
-        // change m_selection only now to ignore the selection change event
-        m_selection = n;
-        m_choice->Select(n);
+            wxWindow *page = m_pages[n];
+            page->SetSize(GetPageRect());
+            page->Show();
+
+            // change m_selection now to ignore the selection change event
+            m_selection = n;
+            m_choice->Select(n);
+
+            // program allows the page change
+            event.SetEventType(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED);
+            (void)GetEventHandler()->ProcessEvent(event);
+        }
     }
 
-    return selOld;
+    return oldSel;
 }
 
 // ----------------------------------------------------------------------------
@@ -319,16 +339,28 @@ wxChoicebook::InsertPage(size_t n,
 
     m_choice->Insert(text, n);
 
-    // we should always have some selection if possible
-    if ( bSelect || (m_selection == wxNOT_FOUND) )
+    // if the inserted page is before the selected one, we must update the
+    // index of the selected page
+    if ( int(n) <= m_selection )
     {
-        SetSelection(n);
+        // one extra page added
+        m_selection++;
+        m_choice->Select(m_selection);
     }
-    else // don't select this page
-    {
-        // it will be shown only when selected
+
+    // some page should be selected: either this one or the first one if there
+    // is still no selection
+    int selNew = -1;
+    if ( bSelect )
+        selNew = n;
+    else if ( m_selection == -1 )
+        selNew = 0;
+
+    if ( selNew != m_selection )
         page->Hide();
-    }
+
+    if ( selNew != -1 )
+        SetSelection(selNew);
 
     InvalidateBestSize();
     return true;
@@ -377,7 +409,6 @@ bool wxChoicebook::DeleteAllPages()
 void wxChoicebook::OnChoiceSelected(wxCommandEvent& eventChoice)
 {
     const int selNew = eventChoice.GetSelection();
-    const int selOld = m_selection;
 
     if ( selNew == m_selection )
     {
@@ -387,28 +418,11 @@ void wxChoicebook::OnChoiceSelected(wxCommandEvent& eventChoice)
         return;
     }
 
-    // first send "change in progress" event which may be vetoed by user
-    wxChoicebookEvent eventIng(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING, GetId());
-
-    eventIng.SetEventObject(this);
-    eventIng.SetSelection(selNew);
-    eventIng.SetOldSelection(selOld);
-    if ( GetEventHandler()->ProcessEvent(eventIng) && !eventIng.IsAllowed() )
-    {
-        m_choice->Select(m_selection);
-        return;
-    }
-
-    // change allowed: do change the page and notify the user about it
     SetSelection(selNew);
 
-    wxChoicebookEvent eventEd(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED, GetId());
-
-    eventEd.SetEventObject(this);
-    eventEd.SetSelection(selNew);
-    eventEd.SetOldSelection(selOld);
-
-    (void)GetEventHandler()->ProcessEvent(eventEd);
+    // change wasn't allowed, return to previous state
+    if (m_selection != selNew)
+        m_choice->Select(m_selection);
 }
 
 #endif // wxUSE_CHOICEBOOK