X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b3b17ee74390803c2743455f5f3c744a2dd392ea..abd474ea63667f727940a009cc3e0b23ba9f418f:/src/generic/listctrl.cpp

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 20136f0086..09354910b6 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -25,15 +25,6 @@
 
 #include "wx/listctrl.h"
 
-#if ((!defined(__WXMSW__) && !(defined(__WXMAC__) && wxOSX_USE_CARBON)) || defined(__WXUNIVERSAL__))
-    // if we have a native version, its implementation file does all this
-    IMPLEMENT_DYNAMIC_CLASS(wxListItem, wxObject)
-    IMPLEMENT_DYNAMIC_CLASS(wxListView, wxListCtrl)
-    IMPLEMENT_DYNAMIC_CLASS(wxListEvent, wxNotifyEvent)
-
-    IMPLEMENT_DYNAMIC_CLASS(wxListCtrl, wxGenericListCtrl)
-#endif
-
 #ifndef WX_PRECOMP
     #include "wx/scrolwin.h"
     #include "wx/timer.h"
@@ -52,8 +43,6 @@
 
 #ifdef __WXMAC__
     #include "wx/osx/private.h"
-    // for theming support
-    #include <Carbon/Carbon.h>
 #endif
 
 #if defined(__WXMSW__) && !defined(__WXWINCE__) && !defined(__WXUNIVERSAL__)
@@ -669,11 +658,20 @@ void wxListLineData::SetAttr(wxListItemAttr *attr)
     item->SetAttr(attr);
 }
 
-bool wxListLineData::SetAttributes(wxDC *dc,
-                                   const wxListItemAttr *attr,
-                                   bool highlighted)
+void wxListLineData::ApplyAttributes(wxDC *dc,
+                                     const wxRect& rectHL,
+                                     bool highlighted,
+                                     bool current)
 {
-    wxWindow *listctrl = m_owner->GetParent();
+    const wxListItemAttr * const attr = GetAttr();
+
+    wxWindow * const listctrl = m_owner->GetParent();
+
+    const bool hasFocus = listctrl->HasFocus()
+#if defined(__WXMAC__) && !defined(__WXUNIVERSAL__) && wxOSX_USE_CARBON
+                && IsControlActive( (ControlRef)listctrl->GetHandle() )
+#endif
+                ;
 
     // fg colour
 
@@ -682,20 +680,19 @@ bool wxListLineData::SetAttributes(wxDC *dc,
     // arithmetics on wxColour, unfortunately)
     wxColour colText;
     if ( highlighted )
-#ifdef __WXMAC__
     {
-        if (m_owner->HasFocus()
-#if !defined(__WXUNIVERSAL__) && wxOSX_USE_CARBON
-                && IsControlActive( (ControlRef)m_owner->GetHandle() )
-#endif
-        )
+#ifdef __WXMAC__
+        if ( hasFocus )
             colText = *wxWHITE;
         else
             colText = *wxBLACK;
-    }
 #else
-        colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
+        if ( hasFocus )
+            colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
+        else
+            colText = wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT);
 #endif
+    }
     else if ( attr && attr->HasTextColour() )
         colText = attr->GetTextColour();
     else
@@ -712,57 +709,26 @@ bool wxListLineData::SetAttributes(wxDC *dc,
 
     dc->SetFont(font);
 
-    // bg colour
-    bool hasBgCol = attr && attr->HasBackgroundColour();
-    if ( highlighted || hasBgCol )
+    // background
+    if ( highlighted )
     {
-        if ( highlighted )
-            dc->SetBrush( *m_owner->GetHighlightBrush() );
-        else
-            dc->SetBrush(wxBrush(attr->GetBackgroundColour(), wxBRUSHSTYLE_SOLID));
-
-        dc->SetPen( *wxTRANSPARENT_PEN );
-
-        return true;
+        // Use the renderer method to ensure that the selected items use the
+        // native look.
+        int flags = wxCONTROL_SELECTED;
+        if ( hasFocus )
+            flags |= wxCONTROL_FOCUSED;
+        if (current)
+           flags |= wxCONTROL_CURRENT;
+        wxRendererNative::Get().
+            DrawItemSelectionRect( m_owner, *dc, rectHL, flags );
     }
-
-    return false;
-}
-
-void wxListLineData::Draw( wxDC *dc )
-{
-    wxListItemDataList::compatibility_iterator node = m_items.GetFirst();
-    wxCHECK_RET( node, wxT("no subitems at all??") );
-
-    bool highlighted = IsHighlighted();
-
-    wxListItemAttr *attr = GetAttr();
-
-    if ( SetAttributes(dc, attr, highlighted) )
-#if ( !defined(__WXGTK20__) && !defined(__WXMAC__) )
+    else if ( attr && attr->HasBackgroundColour() )
     {
-        dc->DrawRectangle( m_gi->m_rectHighlight );
+        // Draw the background using the items custom background colour.
+        dc->SetBrush(attr->GetBackgroundColour());
+        dc->SetPen(*wxTRANSPARENT_PEN);
+        dc->DrawRectangle(rectHL);
     }
-#else
-    {
-        if (highlighted)
-        {
-            int flags = wxCONTROL_SELECTED;
-            if (m_owner->HasFocus()
-#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__) && wxOSX_USE_CARBON
-                && IsControlActive( (ControlRef)m_owner->GetHandle() )
-#endif
-            )
-                flags |= wxCONTROL_FOCUSED;
-            wxRendererNative::Get().DrawItemSelectionRect( m_owner, *dc, m_gi->m_rectHighlight, flags );
-
-        }
-        else
-        {
-            dc->DrawRectangle( m_gi->m_rectHighlight );
-        }
-    }
-#endif
 
     // just for debugging to better see where the items are
 #if 0
@@ -772,6 +738,14 @@ void wxListLineData::Draw( wxDC *dc )
     dc->SetPen(*wxGREEN_PEN);
     dc->DrawRectangle( m_gi->m_rectIcon );
 #endif
+}
+
+void wxListLineData::Draw(wxDC *dc, bool current)
+{
+    wxListItemDataList::compatibility_iterator node = m_items.GetFirst();
+    wxCHECK_RET( node, wxT("no subitems at all??") );
+
+    ApplyAttributes(dc, m_gi->m_rectHighlight, IsHighlighted(), current);
 
     wxListItemData *item = node->GetData();
     if (item->HasImage())
@@ -801,31 +775,8 @@ void wxListLineData::DrawInReportMode( wxDC *dc,
     // TODO: later we should support setting different attributes for
     //       different columns - to do it, just add "col" argument to
     //       GetAttr() and move these lines into the loop below
-    wxListItemAttr *attr = GetAttr();
-    if ( SetAttributes(dc, attr, highlighted) )
-#if ( !defined(__WXGTK20__) && !defined(__WXMAC__) )
-    {
-        dc->DrawRectangle( rectHL );
 
-        wxUnusedVar(current);
-    }
-#else
-    {
-        if (highlighted)
-        {
-            int flags = wxCONTROL_SELECTED;
-            if (m_owner->HasFocus())
-                flags |= wxCONTROL_FOCUSED;
-            if (current)
-               flags |= wxCONTROL_CURRENT;
-            wxRendererNative::Get().DrawItemSelectionRect( m_owner, *dc, rectHL, flags );
-        }
-        else
-        {
-            dc->DrawRectangle( rectHL );
-        }
-    }
-#endif
+    ApplyAttributes(dc, rectHL, highlighted, current);
 
     wxCoord x = rect.x + HEADER_OFFSET_X,
             yMid = rect.y + rect.height/2;
@@ -847,7 +798,8 @@ void wxListLineData::DrawInReportMode( wxDC *dc,
         int xOld = x;
         x += width;
 
-        const int wText = width - 8;
+        width -= 8;
+        const int wText = width;
         wxDCClipper clipper(*dc, xOld, rect.y, wText, rect.height);
 
         if ( item->HasImage() )
@@ -863,7 +815,7 @@ void wxListLineData::DrawInReportMode( wxDC *dc,
         }
 
         if ( item->HasText() )
-            DrawTextFormatted(dc, item->GetText(), col, xOld, yMid, wText);
+            DrawTextFormatted(dc, item->GetText(), col, xOld, yMid, width);
     }
 }
 
@@ -1094,7 +1046,7 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 
 // NB: The code below is not really Mac-specific, but since we are close
 // to 2.8 release and I don't have time to test on other platforms, I
-// defined this only for wxMac. If this behavior is desired on
+// defined this only for wxMac. If this behaviour is desired on
 // other platforms, please go ahead and revise or remove the #ifdef.
 #ifdef __WXMAC__
         if ( !m_owner->IsVirtual() && (item.m_mask & wxLIST_MASK_STATE) &&
@@ -1162,7 +1114,7 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 
         // draw the text and image clipping them so that they
         // don't overwrite the column boundary
-        wxDCClipper clipper(dc, x, HEADER_OFFSET_Y, cw, h - 4 );
+        wxDCClipper clipper(dc, x, HEADER_OFFSET_Y, cw, h);
 
         // if we have an image, draw it on the right of the label
         if ( imageList )
@@ -1172,13 +1124,13 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
                         image,
                         dc,
                         xAligned + wLabel - ix - HEADER_IMAGE_MARGIN_IN_REPORT_MODE,
-                        HEADER_OFFSET_Y + (h - 4 - iy)/2,
+                        HEADER_OFFSET_Y + (h - iy)/2,
                         wxIMAGELIST_DRAW_TRANSPARENT
                        );
         }
 
         dc.DrawText( item.GetText(),
-                     xAligned + EXTRA_WIDTH, h / 2 - hLabel / 2 ); //HEADER_OFFSET_Y + EXTRA_HEIGHT );
+                     xAligned + EXTRA_WIDTH, (h - hLabel) / 2 );
 
         x += wCol;
     }
@@ -1450,23 +1402,31 @@ wxListTextCtrlWrapper::wxListTextCtrlWrapper(wxListMainWindow *owner,
     m_text->PushEventHandler(this);
 }
 
-void wxListTextCtrlWrapper::EndEdit(bool discardChanges)
+void wxListTextCtrlWrapper::EndEdit(EndReason reason)
 {
     m_aboutToFinish = true;
 
-    if ( discardChanges )
+    switch ( reason )
     {
-        m_owner->OnRenameCancelled(m_itemEdited);
+        case End_Accept:
+            // Notify the owner about the changes
+            AcceptChanges();
 
-        Finish( true );
-    }
-    else
-    {
-        // Notify the owner about the changes
-        AcceptChanges();
+            // Even if vetoed, close the control (consistent with MSW)
+            Finish( true );
+            break;
+
+        case End_Discard:
+            m_owner->OnRenameCancelled(m_itemEdited);
+
+            Finish( true );
+            break;
 
-        // Even if vetoed, close the control (consistent with MSW)
-        Finish( true );
+        case End_Destroy:
+            // Don't generate any notifications for the control being destroyed
+            // and don't set focus to it neither.
+            Finish(false);
+            break;
     }
 }
 
@@ -1505,11 +1465,11 @@ void wxListTextCtrlWrapper::OnChar( wxKeyEvent &event )
     switch ( event.m_keyCode )
     {
         case WXK_RETURN:
-            EndEdit( false );
+            EndEdit( End_Accept );
             break;
 
         case WXK_ESCAPE:
-            EndEdit( true );
+            EndEdit( End_Discard );
             break;
 
         default:
@@ -1643,6 +1603,9 @@ wxListMainWindow::wxListMainWindow( wxWindow *parent,
 
 wxListMainWindow::~wxListMainWindow()
 {
+    if ( m_textctrlWrapper )
+        m_textctrlWrapper->EndEdit(wxListTextCtrlWrapper::End_Destroy);
+
     DoDeleteAllItems();
     WX_CLEAR_LIST(wxListHeaderDataList, m_columns);
     WX_CLEAR_ARRAY(m_aColWidths);
@@ -1652,6 +1615,15 @@ wxListMainWindow::~wxListMainWindow()
     delete m_renameTimer;
 }
 
+void wxListMainWindow::SetReportView(bool inReportView)
+{
+    const size_t count = m_lines.size();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        m_lines[n].SetReportView(inReportView);
+    }
+}
+
 void wxListMainWindow::CacheLineData(size_t line)
 {
     wxGenericListCtrl *listctrl = GetListCtrl();
@@ -2127,24 +2099,24 @@ void wxListMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
         size_t count = GetItemCount();
         for ( size_t i = 0; i < count; i++ )
         {
-            GetLine(i)->Draw( &dc );
+            GetLine(i)->Draw( &dc, i == m_current );
         }
     }
 
-#if !defined( __WXMAC__) && !defined(__WXGTK20__)
-    // Don't draw rect outline under Mac at all.
-    // Draw it elsewhere under GTK.
+    // DrawFocusRect() is unusable under Mac, it draws outside of the highlight
+    // rectangle somehow and so leaves traces when the item is not selected any
+    // more, see #12229.
+#ifndef __WXMAC__
     if ( HasCurrent() )
     {
-        if ( m_hasFocus )
-        {
-            wxRect rect( GetLineHighlightRect( m_current ) );
-            dc.SetPen( *wxBLACK_PEN );
-            dc.SetBrush( *wxTRANSPARENT_BRUSH );
-            dc.DrawRectangle( rect );
-        }
+        int flags = 0;
+        if ( IsHighlighted(m_current) )
+            flags |= wxCONTROL_SELECTED;
+
+        wxRendererNative::Get().
+            DrawFocusRect(this, dc, GetLineHighlightRect(m_current), flags);
     }
-#endif
+#endif // !__WXMAC__
 }
 
 void wxListMainWindow::HighlightAll( bool on )
@@ -2307,7 +2279,7 @@ void wxListMainWindow::OnMouse( wxMouseEvent &event )
     // listctrl because the order of events is different (or something like
     // that), so explicitly end the edit if it is active.
     if ( event.LeftDown() && m_textctrlWrapper )
-        m_textctrlWrapper->EndEdit( false );
+        m_textctrlWrapper->EndEdit(wxListTextCtrlWrapper::End_Accept);
 #endif // __WXMAC__
 
     if ( event.LeftDown() )
@@ -2716,6 +2688,16 @@ void wxListMainWindow::OnKeyDown( wxKeyEvent &event )
     if (parent->GetEventHandler()->ProcessEvent( ke ))
         return;
 
+    // send a list event
+    wxListEvent le( wxEVT_COMMAND_LIST_KEY_DOWN, parent->GetId() );
+    le.m_itemIndex = m_current;
+    if (HasCurrent())
+        GetLine(m_current)->GetItem( 0, le.m_item );
+    le.m_code = event.GetKeyCode();
+    le.SetEventObject( parent );
+    if (parent->GetEventHandler()->ProcessEvent( le ))
+        return;
+
     event.Skip();
 }
 
@@ -2735,32 +2717,11 @@ void wxListMainWindow::OnChar( wxKeyEvent &event )
 {
     wxWindow *parent = GetParent();
 
-    // send a list_key event up
-    if ( HasCurrent() )
-    {
-        wxListEvent le( wxEVT_COMMAND_LIST_KEY_DOWN, GetParent()->GetId() );
-        le.m_itemIndex = m_current;
-        GetLine(m_current)->GetItem( 0, le.m_item );
-        le.m_code = event.GetKeyCode();
-        le.SetEventObject( parent );
-        parent->GetEventHandler()->ProcessEvent( le );
-    }
-
-    if ( (event.GetKeyCode() != WXK_UP) &&
-         (event.GetKeyCode() != WXK_DOWN) &&
-         (event.GetKeyCode() != WXK_RIGHT) &&
-         (event.GetKeyCode() != WXK_LEFT) &&
-         (event.GetKeyCode() != WXK_PAGEUP) &&
-         (event.GetKeyCode() != WXK_PAGEDOWN) &&
-         (event.GetKeyCode() != WXK_END) &&
-         (event.GetKeyCode() != WXK_HOME) )
-    {
-        // propagate the char event upwards
-        wxKeyEvent ke(event);
-        ke.SetEventObject( parent );
-        if (parent->GetEventHandler()->ProcessEvent( ke ))
-            return;
-    }
+    // propagate the char event upwards
+    wxKeyEvent ke(event);
+    ke.SetEventObject( parent );
+    if (parent->GetEventHandler()->ProcessEvent( ke ))
+        return;
 
     if ( HandleAsNavigationKey(event) )
         return;
@@ -4052,8 +4013,11 @@ void wxListMainWindow::InsertItem( wxListItem &item )
     {
         ResetVisibleLinesRange();
 
+        const unsigned col = item.GetColumn();
+        wxCHECK_RET( col < m_aColWidths.size(), "invalid item column" );
+
         // calculate the width of the item and adjust the max column width
-        wxColWidthInfo *pWidthInfo = m_aColWidths.Item(item.GetColumn());
+        wxColWidthInfo *pWidthInfo = m_aColWidths.Item(col);
         int width = GetItemWidthWithImage(&item);
         item.SetWidth(width);
         if (width > pWidthInfo->nMaxWidth)
@@ -4063,6 +4027,19 @@ void wxListMainWindow::InsertItem( wxListItem &item )
     wxListLineData *line = new wxListLineData(this);
 
     line->SetItem( item.m_col, item );
+    if ( item.m_mask & wxLIST_MASK_IMAGE && item.GetImage() != -1)
+    {
+        // Reset the buffered height if it's not big enough for the new image.
+        if (m_small_image_list)
+        {
+            int imageWidth, imageHeight;
+            m_small_image_list->GetSize(item.GetImage(),
+                                        imageWidth, imageHeight);
+
+            if ( imageHeight > m_lineHeight )
+                m_lineHeight = 0;
+        }
+    }
 
     m_lines.Insert( line, id );
 
@@ -4274,7 +4251,6 @@ void wxGenericListCtrl::Init()
 
     m_mainWin = NULL;
     m_headerWin = NULL;
-    m_headerHeight = wxRendererNative::Get().GetHeaderButtonHeight(this);
 }
 
 wxGenericListCtrl::~wxGenericListCtrl()
@@ -4301,13 +4277,16 @@ void wxGenericListCtrl::CreateOrDestroyHeaderWindowAsNeeded()
                       (
                         this, wxID_ANY, m_mainWin,
                         wxPoint(0,0),
-                        wxSize(GetClientSize().x, m_headerHeight),
+                        wxSize
+                        (
+                          GetClientSize().x,
+                          wxRendererNative::Get().GetHeaderButtonHeight(this)
+                        ),
                         wxTAB_TRAVERSAL
                       );
 
 #if defined( __WXMAC__ )
-        wxFont font;
-        font.CreateSystemFont( wxOSX_SYSTEM_FONT_SMALL );
+        static wxFont font( wxOSX_SYSTEM_FONT_SMALL );
         m_headerWin->SetFont( font );
 #endif
 
@@ -4317,9 +4296,7 @@ void wxGenericListCtrl::CreateOrDestroyHeaderWindowAsNeeded()
     {
         GetSizer()->Detach( m_headerWin );
 
-        delete m_headerWin;
-
-        m_headerWin = NULL;
+        wxDELETE(m_headerWin);
     }
 }
 
@@ -4349,6 +4326,11 @@ bool wxGenericListCtrl::Create(wxWindow *parent,
 
     SetTargetWindow( m_mainWin );
 
+    // We use the cursor keys for moving the selection, not scrolling, so call
+    // this method to ensure wxScrollHelperEvtHandler doesn't catch all
+    // keyboard events forwarded to us from wxListMainWindow.
+    DisableKeyboardScrolling();
+
     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
     sizer->Add( m_mainWin, 1, wxGROW );
     SetSizer( sizer );
@@ -4443,16 +4425,33 @@ void wxGenericListCtrl::SetSingleStyle( long style, bool add )
 
 void wxGenericListCtrl::SetWindowStyleFlag( long flag )
 {
+    // we add wxHSCROLL and wxVSCROLL in ctor unconditionally and it never
+    // makes sense to remove them as we'll always add scrollbars anyhow when
+    // needed
+    flag |= wxHSCROLL | wxVSCROLL;
+
+    const bool wasInReportView = HasFlag(wxLC_REPORT);
+
+    // update the window style first so that the header is created or destroyed
+    // corresponding to the new style
+    wxWindow::SetWindowStyleFlag( flag );
+
     if (m_mainWin)
     {
+        const bool inReportView = (flag & wxLC_REPORT) != 0;
+        if ( inReportView != wasInReportView )
+        {
+            // we need to notify the main window about this change as it must
+            // update its data structures
+            m_mainWin->SetReportView(inReportView);
+        }
+
         // m_mainWin->DeleteEverything();  wxMSW doesn't do that
 
         CreateOrDestroyHeaderWindowAsNeeded();
 
         GetSizer()->Layout();
     }
-
-    wxWindow::SetWindowStyleFlag( flag );
 }
 
 bool wxGenericListCtrl::GetColumn(int col, wxListItem &item) const
@@ -4541,9 +4540,9 @@ wxGenericListCtrl::SetItemColumnImage( long item, long column, int image )
     return true;
 }
 
-wxString wxGenericListCtrl::GetItemText( long item ) const
+wxString wxGenericListCtrl::GetItemText( long item, int col ) const
 {
-    return m_mainWin->GetItemText(item);
+    return m_mainWin->GetItemText(item, col);
 }
 
 void wxGenericListCtrl::SetItemText( long item, const wxString& str )
@@ -4589,7 +4588,7 @@ bool wxGenericListCtrl::GetSubItemRect(long item,
         return false;
 
     if ( m_mainWin->HasHeader() )
-        rect.y += m_headerHeight + 1;
+        rect.y += m_headerWin->GetSize().y + 1;
 
     return true;
 }
@@ -4867,7 +4866,9 @@ long wxGenericListCtrl::InsertItem( long index, const wxString &label, int image
     wxListItem info;
     info.m_text = label;
     info.m_image = imageIndex;
-    info.m_mask = wxLIST_MASK_TEXT | wxLIST_MASK_IMAGE;
+    info.m_mask = wxLIST_MASK_TEXT;
+    if (imageIndex > -1)
+        info.m_mask |= wxLIST_MASK_IMAGE;
     info.m_itemId = index;
     return InsertItem( info );
 }
@@ -5069,12 +5070,22 @@ bool wxGenericListCtrl::DoPopupMenu( wxMenu *menu, int x, int y )
 
 void wxGenericListCtrl::DoClientToScreen( int *x, int *y ) const
 {
-    m_mainWin->DoClientToScreen(x, y);
+    // It's not clear whether this can be called before m_mainWin is created
+    // but it seems better to be on the safe side and check.
+    if ( m_mainWin )
+        m_mainWin->DoClientToScreen(x, y);
+    else
+        wxControl::DoClientToScreen(x, y);
 }
 
 void wxGenericListCtrl::DoScreenToClient( int *x, int *y ) const
 {
-    m_mainWin->DoScreenToClient(x, y);
+    // At least in wxGTK/Univ build this method can be called before m_mainWin
+    // is created so avoid crashes in this case.
+    if ( m_mainWin )
+        m_mainWin->DoScreenToClient(x, y);
+    else
+        wxControl::DoScreenToClient(x, y);
 }
 
 void wxGenericListCtrl::SetFocus()
@@ -5085,12 +5096,63 @@ void wxGenericListCtrl::SetFocus()
         m_mainWin->SetFocus();
 }
 
-wxSize wxGenericListCtrl::DoGetBestSize() const
+wxSize wxGenericListCtrl::DoGetBestClientSize() const
 {
-    // Something is better than nothing...
-    // 100x80 is what the MSW version will get from the default
-    // wxControl::DoGetBestSize
-    return wxSize(100, 80);
+    // Something is better than nothing even if this is completely arbitrary.
+    wxSize sizeBest(100, 80);
+
+    if ( !InReportView() )
+    {
+        // Ensure that our minimal width is at least big enough to show all our
+        // items. This is important for wxListbook to size itself correctly.
+
+        // Remember the offset of the first item: this corresponds to the
+        // margins around the item so we will add it to the minimal size below
+        // to ensure that we have equal margins on all sides.
+        wxPoint ofs;
+
+        // We can iterate over all items as there shouldn't be too many of them
+        // in non-report view. If it ever becomes a problem, we could examine
+        // just the first few items probably, the determination of the best
+        // size is less important if we will need scrollbars anyhow.
+        for ( int n = 0; n < GetItemCount(); n++ )
+        {
+            const wxRect itemRect = m_mainWin->GetLineRect(n);
+            if ( !n )
+            {
+                // Remember the position of the first item as all the rest are
+                // offset by at least this number of pixels too.
+                ofs = itemRect.GetPosition();
+            }
+
+            sizeBest.IncTo(itemRect.GetSize());
+        }
+
+        sizeBest.IncBy(2*ofs);
+
+
+        // If we have the scrollbars we need to account for them too. And to
+        // make sure the scrollbars status is up to date we need to call this
+        // function to set them.
+        m_mainWin->RecalculatePositions(true /* no refresh */);
+
+        // Unfortunately we can't use wxWindow::HasScrollbar() here as we need
+        // to use m_mainWin client/virtual size for determination of whether we
+        // use scrollbars and not the size of this window itself. Maybe that
+        // function should be extended to work correctly in the case when our
+        // scrollbars manage a different window from this one but currently it
+        // doesn't work.
+        const wxSize sizeClient = m_mainWin->GetClientSize();
+        const wxSize sizeVirt = m_mainWin->GetVirtualSize();
+
+        if ( sizeVirt.x > sizeClient.x /* HasScrollbar(wxHORIZONTAL) */ )
+            sizeBest.y += wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
+
+        if ( sizeVirt.y > sizeClient.y /* HasScrollbar(wxVERTICAL) */ )
+            sizeBest.x += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
+    }
+
+    return sizeBest;
 }
 
 // ----------------------------------------------------------------------------