reset the tooltip text before changing it, this apparently prevents a spurious redraw...

[wxWidgets.git] / src / common / sizer.cpp

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 0802fea03948f0cbaf1d9741d0da49ea786938f8..c4502c852eb40ac7653945cc386f9e9927901eed 100644 (file)
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -1,18 +1,15 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        sizer.cpp
+// Name:        src/common/sizer.cpp

 // Purpose:     provide new wxSizer class for layout
 // Purpose:     provide new wxSizer class for layout

-// Author:      Robert Roebling and Robin Dunn
-// Modified by:
+// Author:      Robert Roebling and Robin Dunn, contributions by
+//              Dirk Holtwick, Ron Lee
+// Modified by: Ron Lee

 // Created:
 // RCS-ID:      $Id$
 // Created:
 // RCS-ID:      $Id$

-// Copyright:   (c) Robin Dunn, Dirk Holtwick and Robert Roebling
+// Copyright:   (c) Robin Dunn, Robert Roebling

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "sizer.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -21,99 +18,281 @@
 #endif
 
 #include "wx/sizer.h"
 #endif
 
 #include "wx/sizer.h"

-#include "wx/utils.h"
-#include "wx/statbox.h"
-#include "wx/notebook.h"
+#include "wx/private/flagscheck.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/math.h"
+    #include "wx/utils.h"
+    #include "wx/settings.h"
+    #include "wx/button.h"
+    #include "wx/statbox.h"
+    #include "wx/toplevel.h"
+#endif // WX_PRECOMP
+
+#include "wx/display.h"
+#include "wx/listimpl.cpp"
+

 
 //---------------------------------------------------------------------------
 
 
 //---------------------------------------------------------------------------
 

-IMPLEMENT_ABSTRACT_CLASS(wxSizerItem, wxObject);
-IMPLEMENT_ABSTRACT_CLASS(wxSizer, wxObject);
-IMPLEMENT_ABSTRACT_CLASS(wxGridSizer, wxSizer);
-IMPLEMENT_ABSTRACT_CLASS(wxFlexGridSizer, wxGridSizer);
-IMPLEMENT_ABSTRACT_CLASS(wxBoxSizer, wxSizer);
-IMPLEMENT_ABSTRACT_CLASS(wxStaticBoxSizer, wxBoxSizer);
-#if wxUSE_NOTEBOOK
-IMPLEMENT_ABSTRACT_CLASS(wxNotebookSizer, wxSizer);
+IMPLEMENT_CLASS(wxSizerItem, wxObject)
+IMPLEMENT_CLASS(wxSizer, wxObject)
+IMPLEMENT_CLASS(wxGridSizer, wxSizer)
+IMPLEMENT_CLASS(wxFlexGridSizer, wxGridSizer)
+IMPLEMENT_CLASS(wxBoxSizer, wxSizer)
+#if wxUSE_STATBOX
+IMPLEMENT_CLASS(wxStaticBoxSizer, wxBoxSizer)
+#endif
+#if wxUSE_BUTTON
+IMPLEMENT_CLASS(wxStdDialogButtonSizer, wxBoxSizer)

 #endif
 
 #endif
 

-//---------------------------------------------------------------------------
-// wxSizerItem
-//---------------------------------------------------------------------------
+WX_DEFINE_EXPORTED_LIST( wxSizerItemList )

 
 

-wxSizerItem::wxSizerItem( int width, int height, int option, int flag, int border, wxObject* userData )
+/*
+    TODO PROPERTIES
+      sizeritem
+        object
+        object_ref
+          minsize
+          option
+          flag
+          border
+     spacer
+        option
+        flag
+        borfder
+    boxsizer
+       orient
+    staticboxsizer
+       orient
+       label
+    gridsizer
+       rows
+       cols
+       vgap
+       hgap
+    flexgridsizer
+       rows
+       cols
+       vgap
+       hgap
+       growablerows
+       growablecols
+    minsize
+*/
+
+// ----------------------------------------------------------------------------
+// wxSizerItem
+// ----------------------------------------------------------------------------
+
+// check for flags conflicts
+static const int SIZER_FLAGS_MASK =
+    wxADD_FLAG(wxCENTRE,
+    wxADD_FLAG(wxHORIZONTAL,
+    wxADD_FLAG(wxVERTICAL,
+    wxADD_FLAG(wxLEFT,
+    wxADD_FLAG(wxRIGHT,
+    wxADD_FLAG(wxUP,
+    wxADD_FLAG(wxDOWN,
+    wxADD_FLAG(wxALIGN_NOT,
+    wxADD_FLAG(wxALIGN_CENTER_HORIZONTAL,
+    wxADD_FLAG(wxALIGN_RIGHT,
+    wxADD_FLAG(wxALIGN_BOTTOM,
+    wxADD_FLAG(wxALIGN_CENTER_VERTICAL,
+    wxADD_FLAG(wxFIXED_MINSIZE,
+    wxADD_FLAG(wxRESERVE_SPACE_EVEN_IF_HIDDEN,
+    wxADD_FLAG(wxSTRETCH_NOT,
+    wxADD_FLAG(wxSHRINK,
+    wxADD_FLAG(wxGROW,
+    wxADD_FLAG(wxSHAPED,
+    0))))))))))))))))));
+
+#define ASSERT_VALID_SIZER_FLAGS(f)  wxASSERT_VALID_FLAGS(f, SIZER_FLAGS_MASK)
+
+
+void wxSizerItem::Init(const wxSizerFlags& flags)

 {
 {

-    m_window = (wxWindow *) NULL;
-    m_sizer = (wxSizer *) NULL;
-    m_option = option;
-    m_border = border;
-    m_flag = flag;
-    m_userData = userData;
+    Init();

 
 

-    // minimal size is the initial size
-    m_minSize.x = width;
-    m_minSize.y = height;
+    m_proportion = flags.GetProportion();
+    m_flag = flags.GetFlags();
+    m_border = flags.GetBorderInPixels();
+
+    ASSERT_VALID_SIZER_FLAGS( m_flag );
+}

 
 

-    SetRatio(width, height);
+wxSizerItem::wxSizerItem()
+{
+    Init();

 
 

-    // size is set directly
-    m_size = m_minSize;
+    m_proportion = 0;
+    m_border = 0;
+    m_flag = 0;
+    m_id = wxID_NONE;

 }
 
 }
 

-wxSizerItem::wxSizerItem( wxWindow *window, int option, int flag, int border, wxObject* userData )
+// window item
+void wxSizerItem::DoSetWindow(wxWindow *window)

 {
 {

+    wxCHECK_RET( window, _T("NULL window in wxSizerItem::SetWindow()") );
+
+    m_kind = Item_Window;

     m_window = window;
     m_window = window;

-    m_sizer = (wxSizer *) NULL;
-    m_option = option;
-    m_border = border;
-    m_flag = flag;
-    m_userData = userData;

 
 

-    // minimal size is the initial size
+    // window doesn't become smaller than its initial size, whatever happens

     m_minSize = window->GetSize();
 
     m_minSize = window->GetSize();
 

+    if ( m_flag & wxFIXED_MINSIZE )
+        window->SetMinSize(m_minSize);
+

     // aspect ratio calculated from initial size
     SetRatio(m_minSize);
     // aspect ratio calculated from initial size
     SetRatio(m_minSize);

+}

 
 

-    // size is calculated later
-    // m_size = ...
+wxSizerItem::wxSizerItem(wxWindow *window,
+                         int proportion,
+                         int flag,
+                         int border,
+                         wxObject* userData)
+           : m_kind(Item_None),
+             m_proportion(proportion),
+             m_border(border),
+             m_flag(flag),
+             m_id(wxID_NONE),
+             m_userData(userData)
+{
+    ASSERT_VALID_SIZER_FLAGS( m_flag );
+
+    DoSetWindow(window);

 }
 
 }
 

-wxSizerItem::wxSizerItem( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
+// sizer item
+void wxSizerItem::DoSetSizer(wxSizer *sizer)

 {
 {

-    m_window = (wxWindow *) NULL;
+    m_kind = Item_Sizer;

     m_sizer = sizer;
     m_sizer = sizer;

-    m_option = option;
-    m_border = border;
-    m_flag = flag;
-    m_userData = userData;
+}

 
 

-    // minimal size is calculated later
-    // m_minSize = ...
-    m_ratio = 0;
+wxSizerItem::wxSizerItem(wxSizer *sizer,
+                         int proportion,
+                         int flag,
+                         int border,
+                         wxObject* userData)
+           : m_kind(Item_None),
+             m_sizer(NULL),
+             m_proportion(proportion),
+             m_border(border),
+             m_flag(flag),
+             m_id(wxID_NONE),
+             m_ratio(0.0),
+             m_userData(userData)
+{
+    ASSERT_VALID_SIZER_FLAGS( m_flag );

 
 

-    // size is calculated later
-    // m_size = ...
+    DoSetSizer(sizer);
+
+    // m_minSize is set later
+}
+
+// spacer item
+void wxSizerItem::DoSetSpacer(const wxSize& size)
+{
+    m_kind = Item_Spacer;
+    m_spacer = new wxSizerSpacer(size);
+    m_minSize = size;
+    SetRatio(size);
+}
+
+wxSizerItem::wxSizerItem(int width,
+                         int height,
+                         int proportion,
+                         int flag,
+                         int border,
+                         wxObject* userData)
+           : m_kind(Item_None),
+             m_sizer(NULL),
+             m_minSize(width, height), // minimal size is the initial size
+             m_proportion(proportion),
+             m_border(border),
+             m_flag(flag),
+             m_id(wxID_NONE),
+             m_userData(userData)
+{
+    ASSERT_VALID_SIZER_FLAGS( m_flag );
+
+    DoSetSpacer(wxSize(width, height));

 }
 
 wxSizerItem::~wxSizerItem()
 {
 }
 
 wxSizerItem::~wxSizerItem()
 {

-    if (m_userData)
-        delete m_userData;
-    if (m_sizer)
-        delete m_sizer;
+    delete m_userData;
+    Free();

 }
 
 }
 

+void wxSizerItem::Free()
+{
+    switch ( m_kind )
+    {
+        case Item_None:
+            break;
+
+        case Item_Window:
+            m_window->SetContainingSizer(NULL);
+            break;
+
+        case Item_Sizer:
+            delete m_sizer;
+            break;
+
+        case Item_Spacer:
+            delete m_spacer;
+            break;
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
+    }
+
+    m_kind = Item_None;
+}

 
 

-wxSize wxSizerItem::GetSize()
+wxSize wxSizerItem::GetSpacer() const
+{
+    wxSize size;
+    if ( m_kind == Item_Spacer )
+        size = m_spacer->GetSize();
+
+    return size;
+}
+
+
+wxSize wxSizerItem::GetSize() const

 {
     wxSize ret;
 {
     wxSize ret;

-    if (IsSizer())
-        ret = m_sizer->GetSize();
-    else
-    if (IsWindow())
-        ret = m_window->GetSize();
-    else ret = m_size;
+    switch ( m_kind )
+    {
+        case Item_None:
+            break;
+
+        case Item_Window:
+            ret = m_window->GetSize();
+            break;
+
+        case Item_Sizer:
+            ret = m_sizer->GetSize();
+            break;
+
+        case Item_Spacer:
+            ret = m_spacer->GetSize();
+            break;
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
+    }

 
     if (m_flag & wxWEST)
         ret.x += m_border;
 
     if (m_flag & wxWEST)
         ret.x += m_border;


@@ -127,27 +306,97 @@ wxSize wxSizerItem::GetSize()
     return ret;
 }
 
     return ret;
 }
 

+bool wxSizerItem::InformFirstDirection(int direction, int size, int availableOtherDir)
+{
+    // The size that come here will be including borders. Child items should get it
+    // without borders.
+    if( size>0 )
+    {
+        if( direction==wxHORIZONTAL )
+        {
+            if (m_flag & wxWEST)
+                size -= m_border;
+            if (m_flag & wxEAST)
+                size -= m_border;
+        }
+        else if( direction==wxVERTICAL )
+        {
+            if (m_flag & wxNORTH)
+                size -= m_border;
+            if (m_flag & wxSOUTH)
+                size -= m_border;
+        }
+    }
+
+    bool didUse = false;
+    // Pass the information along to the held object
+    if (IsSizer())
+    {
+        didUse = GetSizer()->InformFirstDirection(direction,size,availableOtherDir);
+        if (didUse)
+            m_minSize = GetSizer()->CalcMin();
+    }
+    else if (IsWindow())
+    {
+        didUse =  GetWindow()->InformFirstDirection(direction,size,availableOtherDir);
+        if (didUse)
+            m_minSize = m_window->GetEffectiveMinSize();
+
+        // This information is useful for items with wxSHAPED flag, since
+        // we can request an optimal min size for such an item. Even if
+        // we overwrite the m_minSize member here, we can read it back from
+        // the owned window (happens automatically).
+        if( (m_flag & wxSHAPED) && (m_flag & wxEXPAND) && direction )
+        {
+            if( !wxIsNullDouble(m_ratio) )
+            {
+                wxCHECK_MSG( (m_proportion==0), false, _T("Shaped item, non-zero proportion in wxSizerItem::InformFirstDirection()") );
+                if( direction==wxHORIZONTAL && !wxIsNullDouble(m_ratio) )
+                {
+                    // Clip size so that we don't take too much
+                    if( availableOtherDir>=0 && int(size/m_ratio)-m_minSize.y>availableOtherDir )
+                        size = int((availableOtherDir+m_minSize.y)*m_ratio);
+                    m_minSize = wxSize(size,int(size/m_ratio));
+                }
+                else if( direction==wxVERTICAL )
+                {
+                    // Clip size so that we don't take too much
+                    if( availableOtherDir>=0 && int(size*m_ratio)-m_minSize.x>availableOtherDir )
+                        size = int((availableOtherDir+m_minSize.x)/m_ratio);
+                    m_minSize = wxSize(int(size*m_ratio),size);
+                }
+                didUse = true;
+            }
+        }
+    }
+
+    return didUse;
+}
+

 wxSize wxSizerItem::CalcMin()
 {
 wxSize wxSizerItem::CalcMin()
 {

-    wxSize ret;

     if (IsSizer())
     {
     if (IsSizer())
     {

-        ret = m_sizer->GetMinSize();
+        m_minSize = m_sizer->GetMinSize();
+

         // if we have to preserve aspect ratio _AND_ this is
         // the first-time calculation, consider ret to be initial size
         // if we have to preserve aspect ratio _AND_ this is
         // the first-time calculation, consider ret to be initial size

-        if ((m_flag & wxSHAPED) && !m_ratio) SetRatio(ret);
+        if ( (m_flag & wxSHAPED) && wxIsNullDouble(m_ratio) )
+            SetRatio(m_minSize);
+    }
+    else if ( IsWindow() )
+    {
+        // Since the size of the window may change during runtime, we
+        // should use the current minimal/best size.
+        m_minSize = m_window->GetEffectiveMinSize();

     }
 
     }
 

-/*
-    The minimum size of a window should be the
-    initial size, as saved in m_minSize, not the
-    current size.
+    return GetMinSizeWithBorder();
+}

 
 

-    else
-    if (IsWindow())
-        ret = m_window->GetSize();
-*/
-    else ret = m_minSize;
+wxSize wxSizerItem::GetMinSizeWithBorder() const
+{
+    wxSize ret = m_minSize;

 
     if (m_flag & wxWEST)
         ret.x += m_border;
 
     if (m_flag & wxWEST)
         ret.x += m_border;


@@ -161,8 +410,41 @@ wxSize wxSizerItem::CalcMin()
     return ret;
 }
 
     return ret;
 }
 

-void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
+
+void wxSizerItem::SetDimension( const wxPoint& pos_, const wxSize& size_ )

 {
 {

+    wxPoint pos = pos_;
+    wxSize size = size_;
+    if (m_flag & wxSHAPED)
+    {
+        // adjust aspect ratio
+        int rwidth = (int) (size.y * m_ratio);
+        if (rwidth > size.x)
+        {
+            // fit horizontally
+            int rheight = (int) (size.x / m_ratio);
+            // add vertical space
+            if (m_flag & wxALIGN_CENTER_VERTICAL)
+                pos.y += (size.y - rheight) / 2;
+            else if (m_flag & wxALIGN_BOTTOM)
+                pos.y += (size.y - rheight);
+            // use reduced dimensions
+            size.y =rheight;
+        }
+        else if (rwidth < size.x)
+        {
+            // add horizontal space
+            if (m_flag & wxALIGN_CENTER_HORIZONTAL)
+                pos.x += (size.x - rwidth) / 2;
+            else if (m_flag & wxALIGN_RIGHT)
+                pos.x += (size.x - rwidth);
+            size.x = rwidth;
+        }
+    }
+
+    // This is what GetPosition() returns. Since we calculate
+    // borders afterwards, GetPosition() will be the left/top
+    // corner of the surrounding border.

     m_pos = pos;
 
     if (m_flag & wxWEST)
     m_pos = pos;
 
     if (m_flag & wxWEST)


@@ -183,195 +465,555 @@ void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
     {
         size.y -= m_border;
     }
     {
         size.y -= m_border;
     }

-    if (m_flag & wxSHAPED) {
-        // adjust aspect ratio
-        int rwidth = (int) (size.y * m_ratio);
-        if (rwidth > size.x) {
-            // fit horizontally
-            int rheight = (int) (size.x / m_ratio);
-            // add vertical space
-            if (m_flag & wxALIGN_CENTER_VERTICAL)
-                pos.y += (size.y - rheight) / 2;
-            else if (m_flag & wxALIGN_BOTTOM)
-                pos.y += (size.y - rheight);
-            // use reduced dimensions
-            size.y =rheight;
-        } else if (rwidth < size.x) {
-            // add horizontal space
-            if (m_flag & wxALIGN_CENTER_HORIZONTAL)
-                pos.x += (size.x - rwidth) / 2;
-            else if (m_flag & wxALIGN_RIGHT)
-                pos.x += (size.x - rwidth);
-            size.x = rwidth;
+
+    if (size.x < 0)
+        size.x = 0;
+    if (size.y < 0)
+        size.y = 0;
+
+    m_rect = wxRect(pos, size);
+
+    switch ( m_kind )
+    {
+        case Item_None:
+            wxFAIL_MSG( _T("can't set size of uninitialized sizer item") );
+            break;
+
+        case Item_Window:
+        {
+            // Use wxSIZE_FORCE_EVENT here since a sizer item might
+            // have changed alignment or some other property which would
+            // not change the size of the window. In such a case, no
+            // wxSizeEvent would normally be generated and thus the
+            // control wouldn't get layed out correctly here.
+#if 1
+            m_window->SetSize(pos.x, pos.y, size.x, size.y,
+                              wxSIZE_ALLOW_MINUS_ONE|wxSIZE_FORCE_EVENT );
+#else
+            m_window->SetSize(pos.x, pos.y, size.x, size.y,
+                              wxSIZE_ALLOW_MINUS_ONE );
+#endif
+            break;

         }
         }

+        case Item_Sizer:
+            m_sizer->SetDimension(pos, size);
+            break;
+
+        case Item_Spacer:
+            m_spacer->SetSize(size);
+            break;
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );

     }
     }

+}

 
 

-    if (IsSizer())
-        m_sizer->SetDimension( pos.x, pos.y, size.x, size.y );
+void wxSizerItem::DeleteWindows()
+{
+    switch ( m_kind )
+    {
+        case Item_None:
+        case Item_Spacer:
+            break;
+
+        case Item_Window:
+            //We are deleting the window from this sizer - normally
+            //the window destroys the sizer associated with it,
+            //which might destroy this, which we don't want
+            m_window->SetContainingSizer(NULL);
+            m_window->Destroy();
+            //Putting this after the switch will result in a spacer
+            //not being deleted properly on destruction
+            m_kind = Item_None;
+            break;
+
+        case Item_Sizer:
+            m_sizer->DeleteWindows();
+            break;
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
+    }
+
+}
+
+void wxSizerItem::Show( bool show )
+{
+    switch ( m_kind )
+    {
+        case Item_None:
+            wxFAIL_MSG( _T("can't show uninitialized sizer item") );
+            break;

 
 

-    if (IsWindow())
-        m_window->SetSize( pos.x, pos.y, size.x, size.y, wxSIZE_ALLOW_MINUS_ONE );
+        case Item_Window:
+            m_window->Show(show);
+            break;

 
 

-    m_size = size;
+        case Item_Sizer:
+            m_sizer->Show(show);
+            break;
+
+        case Item_Spacer:
+            m_spacer->Show(show);
+            break;
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
+    }

 }
 
 }
 

-bool wxSizerItem::IsWindow()
+bool wxSizerItem::IsShown() const

 {
 {

-    return (m_window != NULL);
+    if ( m_flag & wxRESERVE_SPACE_EVEN_IF_HIDDEN )
+        return true;
+
+    switch ( m_kind )
+    {
+        case Item_None:
+            // we may be called from CalcMin(), just return false so that we're
+            // not used
+            break;
+
+        case Item_Window:
+            return m_window->IsShown();
+
+        case Item_Sizer:
+            // arbitrarily decide that if at least one of our elements is
+            // shown, so are we (this arbitrariness is the reason for
+            // deprecating this function)
+            {
+                // Some apps (such as dialog editors) depend on an empty sizer still
+                // being laid out correctly and reporting the correct size and position.
+                if (m_sizer->GetChildren().GetCount() == 0)
+                    return true;
+
+                for ( wxSizerItemList::compatibility_iterator
+                        node = m_sizer->GetChildren().GetFirst();
+                      node;
+                      node = node->GetNext() )
+                {
+                    if ( node->GetData()->IsShown() )
+                        return true;
+                }
+            }
+            return false;
+
+        case Item_Spacer:
+            return m_spacer->IsShown();
+
+        case Item_Max:
+        default:
+            wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
+    }
+
+    return false;

 }
 
 }
 

-bool wxSizerItem::IsSizer()
+#if WXWIN_COMPATIBILITY_2_6
+void wxSizerItem::SetOption( int option )

 {
 {

-    return (m_sizer != NULL);
+    SetProportion( option );

 }
 
 }
 

-bool wxSizerItem::IsSpacer()
+int wxSizerItem::GetOption() const

 {
 {

-    return (m_window == NULL) && (m_sizer == NULL);
+    return GetProportion();

 }
 }

+#endif // WXWIN_COMPATIBILITY_2_6
+

 
 //---------------------------------------------------------------------------
 // wxSizer
 //---------------------------------------------------------------------------
 
 
 //---------------------------------------------------------------------------
 // wxSizer
 //---------------------------------------------------------------------------
 

-wxSizer::wxSizer()
-{
-    m_children.DeleteContents( TRUE );
-    m_minSize.x = 0;
-    m_minSize.y = 0;
-}
-

 wxSizer::~wxSizer()
 {
 wxSizer::~wxSizer()
 {

+    WX_CLEAR_LIST(wxSizerItemList, m_children);

 }
 
 }
 

-void wxSizer::Add( wxWindow *window, int option, int flag, int border, wxObject* userData )
+wxSizerItem* wxSizer::Insert( size_t index, wxSizerItem *item )

 {
 {

-    m_children.Append( new wxSizerItem( window, option, flag, border, userData ) );
+    m_children.Insert( index, item );
+
+    if ( item->GetWindow() )
+        item->GetWindow()->SetContainingSizer( this );
+
+    if ( item->GetSizer() )
+        item->GetSizer()->SetContainingWindow( m_containingWindow );
+
+    return item;

 }
 
 }
 

-void wxSizer::Add( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
+void wxSizer::SetContainingWindow(wxWindow *win)

 {
 {

-    m_children.Append( new wxSizerItem( sizer, option, flag, border, userData ) );
+    if ( win == m_containingWindow )
+        return;
+
+    m_containingWindow = win;
+
+    // set the same window for all nested sizers as well, they also are in the
+    // same window
+    for ( wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+          node;
+          node = node->GetNext() )
+    {
+        wxSizerItem *const item = node->GetData();
+        wxSizer *const sizer = item->GetSizer();
+
+        if ( sizer )
+        {
+            sizer->SetContainingWindow(win);
+        }
+    }

 }
 
 }
 

-void wxSizer::Add( int width, int height, int option, int flag, int border, wxObject* userData )
+#if WXWIN_COMPATIBILITY_2_6
+bool wxSizer::Remove( wxWindow *window )

 {
 {

-    m_children.Append( new wxSizerItem( width, height, option, flag, border, userData ) );
+    return Detach( window );

 }
 }

+#endif // WXWIN_COMPATIBILITY_2_6

 
 

-void wxSizer::Prepend( wxWindow *window, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Remove( wxSizer *sizer )

 {
 {

-    m_children.Insert( new wxSizerItem( window, option, flag, border, userData ) );
+    wxASSERT_MSG( sizer, _T("Removing NULL sizer") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            delete item;
+            m_children.Erase( node );
+            return true;
+        }
+
+        node = node->GetNext();
+    }
+
+    return false;

 }
 
 }
 

-void wxSizer::Prepend( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Remove( int index )

 {
 {

-    m_children.Insert( new wxSizerItem( sizer, option, flag, border, userData ) );
+    wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
+                 false,
+                 _T("Remove index is out of range") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    delete node->GetData();
+    m_children.Erase( node );
+
+    return true;

 }
 
 }
 

-void wxSizer::Prepend( int width, int height, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Detach( wxSizer *sizer )

 {
 {

-    m_children.Insert( new wxSizerItem( width, height, option, flag, border, userData ) );
+    wxASSERT_MSG( sizer, _T("Detaching NULL sizer") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            item->DetachSizer();
+            delete item;
+            m_children.Erase( node );
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    return false;

 }
 
 }
 

-void wxSizer::Insert( int before, wxWindow *window, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Detach( wxWindow *window )

 {
 {

-    m_children.Insert( before, new wxSizerItem( window, option, flag, border, userData ) );
+    wxASSERT_MSG( window, _T("Detaching NULL window") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            delete item;
+            m_children.Erase( node );
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    return false;

 }
 
 }
 

-void wxSizer::Insert( int before, wxSizer *sizer, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Detach( int index )

 {
 {

-    m_children.Insert( before, new wxSizerItem( sizer, option, flag, border, userData ) );
+    wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
+                 false,
+                 _T("Detach index is out of range") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem *item = node->GetData();
+
+    if ( item->IsSizer() )
+        item->DetachSizer();
+
+    delete item;
+    m_children.Erase( node );
+    return true;

 }
 
 }
 

-void wxSizer::Insert( int before, int width, int height, int option, int flag, int border, wxObject* userData )
+bool wxSizer::Replace( wxWindow *oldwin, wxWindow *newwin, bool recursive )

 {
 {

-    m_children.Insert( before, new wxSizerItem( width, height, option, flag, border, userData ) );
+    wxASSERT_MSG( oldwin, _T("Replacing NULL window") );
+    wxASSERT_MSG( newwin, _T("Replacing with NULL window") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == oldwin)
+        {
+            item->AssignWindow(newwin);
+            newwin->SetContainingSizer( this );
+            return true;
+        }
+        else if (recursive && item->IsSizer())
+        {
+            if (item->GetSizer()->Replace( oldwin, newwin, true ))
+                return true;
+        }
+
+        node = node->GetNext();
+    }
+
+    return false;

 }
 
 }
 

-bool wxSizer::Remove( wxWindow *window )
+bool wxSizer::Replace( wxSizer *oldsz, wxSizer *newsz, bool recursive )

 {
 {

-    wxASSERT( window );
+    wxASSERT_MSG( oldsz, _T("Replacing NULL sizer") );
+    wxASSERT_MSG( newsz, _T("Replacing with NULL sizer") );

 
 

-    wxNode *node = m_children.First();
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        if (item->GetWindow() == window)
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == oldsz)
+        {
+            item->AssignSizer(newsz);
+            return true;
+        }
+        else if (recursive && item->IsSizer())

         {
         {

-            m_children.DeleteNode( node );
-            return TRUE;
+            if (item->GetSizer()->Replace( oldsz, newsz, true ))
+                return true;

         }
         }

-        node = node->Next();
+
+        node = node->GetNext();

     }
 
     }
 

-    return FALSE;
+    return false;

 }
 
 }
 

-bool wxSizer::Remove( wxSizer *sizer )
+bool wxSizer::Replace( size_t old, wxSizerItem *newitem )

 {
 {

-    wxASSERT( sizer );
+    wxCHECK_MSG( old < m_children.GetCount(), false, _T("Replace index is out of range") );
+    wxASSERT_MSG( newitem, _T("Replacing with NULL item") );

 
 

-    wxNode *node = m_children.First();
+    wxSizerItemList::compatibility_iterator node = m_children.Item( old );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem *item = node->GetData();
+    node->SetData(newitem);
+    delete item;
+
+    return true;
+}
+
+void wxSizer::Clear( bool delete_windows )
+{
+    // First clear the ContainingSizer pointers
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        if (item->GetSizer() == sizer)
+        wxSizerItem     *item = node->GetData();
+
+        if (item->IsWindow())
+            item->GetWindow()->SetContainingSizer( NULL );
+        node = node->GetNext();
+    }
+
+    // Destroy the windows if needed
+    if (delete_windows)
+        DeleteWindows();
+
+    // Now empty the list
+    WX_CLEAR_LIST(wxSizerItemList, m_children);
+}
+
+void wxSizer::DeleteWindows()
+{
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        item->DeleteWindows();
+        node = node->GetNext();
+    }
+}
+
+wxSize wxSizer::ComputeFittingClientSize(wxWindow *window)
+{
+    wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" );
+
+    // take the min size by default and limit it by max size
+    wxSize size = GetMinClientSize(window);
+    wxSize sizeMax;
+
+    wxTopLevelWindow *tlw = wxDynamicCast(window, wxTopLevelWindow);
+    if ( tlw )
+    {
+        // hack for small screen devices where TLWs are always full screen
+        if ( tlw->IsAlwaysMaximized() )

         {
         {

-            m_children.DeleteNode( node );
-            return TRUE;
+            return tlw->GetClientSize();

         }
         }

-        node = node->Next();
+
+        // limit the window to the size of the display it is on
+        int disp = wxDisplay::GetFromWindow(window);
+        if ( disp == wxNOT_FOUND )
+        {
+            // or, if we don't know which one it is, of the main one
+            disp = 0;
+        }
+
+        sizeMax = wxDisplay(disp).GetClientArea().GetSize();
+
+        // space for decorations and toolbars etc.
+        sizeMax = tlw->WindowToClientSize(sizeMax);

     }
     }

+    else
+    {
+        sizeMax = GetMaxClientSize(window);
+    }
+
+    if ( sizeMax.x != wxDefaultCoord && size.x > sizeMax.x )
+            size.x = sizeMax.x;
+    if ( sizeMax.y != wxDefaultCoord && size.y > sizeMax.y )
+            size.y = sizeMax.y;

 
 

-    return FALSE;
+    return size;

 }
 
 }
 

-bool wxSizer::Remove( int pos )
+wxSize wxSizer::ComputeFittingWindowSize(wxWindow *window)

 {
 {

-    wxNode *node = m_children.Nth( pos );
-    if (!node) return FALSE;
+    wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" );

 
 

-    m_children.DeleteNode( node );
+    return window->ClientToWindowSize(ComputeFittingClientSize(window));
+}
+
+wxSize wxSizer::Fit( wxWindow *window )
+{
+    wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" );

 
 

-    return TRUE;
+    // set client size
+    window->SetClientSize(ComputeFittingClientSize(window));
+
+    // return entire size
+    return window->GetSize();

 }
 
 }
 

-void wxSizer::Fit( wxWindow *window )
+void wxSizer::FitInside( wxWindow *window )

 {
 {

-    window->SetSize( GetMinWindowSize( window ) );
+    wxSize size;
+    if (window->IsTopLevel())
+        size = VirtualFitSize( window );
+    else
+        size = GetMinClientSize( window );
+
+    window->SetVirtualSize( size );

 }
 
 void wxSizer::Layout()
 {
 }
 
 void wxSizer::Layout()
 {

+    // (re)calculates minimums needed for each item and other preparations
+    // for layout

     CalcMin();
     CalcMin();

+
+    // Applies the layout and repositions/resizes the items

     RecalcSizes();
 }
 
 void wxSizer::SetSizeHints( wxWindow *window )
 {
     RecalcSizes();
 }
 
 void wxSizer::SetSizeHints( wxWindow *window )
 {

-    wxSize size( GetMinWindowSize( window ) );
-    window->SetSizeHints( size.x, size.y );
+    // Preserve the window's max size hints, but set the
+    // lower bound according to the sizer calculations.
+
+    // This is equivalent to calling Fit(), except that we need to set
+    // the size hints _in between_ the two steps performed by Fit
+    // (1. ComputeFittingClientSize, 2. SetClientSize). That's because
+    // otherwise SetClientSize() could have no effect if there already are
+    // size hints in effect that forbid requested client size.
+
+    const wxSize clientSize = ComputeFittingClientSize(window);
+
+    window->SetMinClientSize(clientSize);
+    window->SetClientSize(clientSize);

 }
 
 }
 

-wxSize wxSizer::GetMinWindowSize( wxWindow *window )
+#if WXWIN_COMPATIBILITY_2_8
+void wxSizer::SetVirtualSizeHints( wxWindow *window )

 {
 {

-    wxSize minSize( GetMinSize() );
-    wxSize size( window->GetSize() );
-    wxSize client_size( window->GetClientSize() );
-    return wxSize( minSize.x+size.x-client_size.x,
-                   minSize.y+size.y-client_size.y );
+    FitInside( window );

 }
 }

+#endif // WXWIN_COMPATIBILITY_2_8

 
 

-void wxSizer::SetDimension( int x, int y, int width, int height )
+// TODO on mac we need a function that determines how much free space this
+// min size contains, in order to make sure that we have 20 pixels of free
+// space around the controls
+wxSize wxSizer::GetMaxClientSize( wxWindow *window ) const

 {
 {

-    m_position.x = x;
-    m_position.y = y;
-    m_size.x = width;
-    m_size.y = height;
-    CalcMin();
-    RecalcSizes();
+    return window->WindowToClientSize(window->GetMaxSize());
+}
+
+wxSize wxSizer::GetMinClientSize( wxWindow *WXUNUSED(window) )
+{
+    return GetMinSize();  // Already returns client size.
+}
+
+wxSize wxSizer::VirtualFitSize( wxWindow *window )
+{
+    wxSize size     = GetMinClientSize( window );
+    wxSize sizeMax  = GetMaxClientSize( window );
+
+    // Limit the size if sizeMax != wxDefaultSize
+
+    if ( size.x > sizeMax.x && sizeMax.x != wxDefaultCoord )
+        size.x = sizeMax.x;
+    if ( size.y > sizeMax.y && sizeMax.y != wxDefaultCoord )
+        size.y = sizeMax.y;
+
+    return size;

 }
 
 wxSize wxSizer::GetMinSize()
 }
 
 wxSize wxSizer::GetMinSize()


@@ -390,128 +1032,346 @@ void wxSizer::DoSetMinSize( int width, int height )
 
 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 {
 
 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 {

-    wxASSERT( window );
+    wxASSERT_MSG( window, _T("SetMinSize for NULL window") );
+
+    // Is it our immediate child?

 
 

-    wxNode *node = m_children.First();
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
+        wxSizerItem     *item = node->GetData();
+

         if (item->GetWindow() == window)
         {
         if (item->GetWindow() == window)
         {

-            item->SetInitSize( width, height );
-            return TRUE;
+            item->SetMinSize( width, height );
+            return true;

         }
         }

-        node = node->Next();
+        node = node->GetNext();

     }
 
     }
 

-    node = m_children.First();
+    // No?  Search any subsizers we own then
+
+    node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        if (item->GetSizer())
+        wxSizerItem     *item = node->GetData();
+
+        if ( item->GetSizer() &&
+             item->GetSizer()->DoSetItemMinSize( window, width, height ) )

         {
         {

-            /* It's a sizer, so lets search recursively. */
-            if (item->GetSizer()->DoSetItemMinSize( window, width, height ))
-            {
-                /* A child sizer found the requested windw, exit. */
-                return TRUE;
-            }
+            // A child sizer found the requested windw, exit.
+            return true;

         }
         }

-        node = node->Next();
+        node = node->GetNext();

     }
 
     }
 

-    return FALSE;
+    return false;

 }
 
 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 {
 }
 
 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 {

-    wxASSERT( sizer );
+    wxASSERT_MSG( sizer, _T("SetMinSize for NULL sizer") );

 
 

-    wxNode *node = m_children.First();
+    // Is it our immediate child?
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
+        wxSizerItem     *item = node->GetData();
+

         if (item->GetSizer() == sizer)
         {
             item->GetSizer()->DoSetMinSize( width, height );
         if (item->GetSizer() == sizer)
         {
             item->GetSizer()->DoSetMinSize( width, height );

-            return TRUE;
+            return true;

         }
         }

-        node = node->Next();
+        node = node->GetNext();

     }
 
     }
 

-    node = m_children.First();
+    // No?  Search any subsizers we own then
+
+    node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        if (item->GetSizer())
+        wxSizerItem     *item = node->GetData();
+
+        if ( item->GetSizer() &&
+             item->GetSizer()->DoSetItemMinSize( sizer, width, height ) )

         {
         {

-            /* It's a sizer, so lets search recursively. */
-            if (item->GetSizer()->DoSetItemMinSize( sizer, width, height ))
-            {
-                /* A child sizer found the requested windw, exit. */
-                return TRUE;
-            }
+            // A child found the requested sizer, exit.
+            return true;

         }
         }

-        node = node->Next();
+        node = node->GetNext();

     }
 
     }
 

-    return FALSE;
+    return false;

 }
 
 }
 

-bool wxSizer::DoSetItemMinSize( int pos, int width, int height )
+bool wxSizer::DoSetItemMinSize( size_t index, int width, int height )

 {
 {

-    wxNode *node = m_children.Nth( pos );
-    if (!node) return FALSE;
+    wxSizerItemList::compatibility_iterator node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem     *item = node->GetData();

 
 

-    wxSizerItem *item = (wxSizerItem*) node->Data();

     if (item->GetSizer())
     {
     if (item->GetSizer())
     {

-        /* Sizers contains the minimal size in them, if not calculated ... */
+        // Sizers contains the minimal size in them, if not calculated ...

         item->GetSizer()->DoSetMinSize( width, height );
     }
     else
     {
         item->GetSizer()->DoSetMinSize( width, height );
     }
     else
     {

-        /* ... whereas the minimal size of spacers and windows in stored
-           in the item */
-        item->SetInitSize( width, height );
+        // ... but the minimal size of spacers and windows is stored via the item
+        item->SetMinSize( width, height );

     }
 
     }
 

-    return TRUE;
+    return true;

 }
 
 }
 

+wxSizerItem* wxSizer::GetItem( wxWindow *window, bool recursive )
+{
+    wxASSERT_MSG( window, _T("GetItem for NULL window") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            return item;
+        }
+        else if (recursive && item->IsSizer())
+        {
+            wxSizerItem *subitem = item->GetSizer()->GetItem( window, true );
+            if (subitem)
+                return subitem;
+        }
+
+        node = node->GetNext();
+    }
+
+    return NULL;
+}
+
+wxSizerItem* wxSizer::GetItem( wxSizer *sizer, bool recursive )
+{
+    wxASSERT_MSG( sizer, _T("GetItem for NULL sizer") );
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            return item;
+        }
+        else if (recursive && item->IsSizer())
+        {
+            wxSizerItem *subitem = item->GetSizer()->GetItem( sizer, true );
+            if (subitem)
+                return subitem;
+        }
+
+        node = node->GetNext();
+    }
+
+    return NULL;
+}
+
+wxSizerItem* wxSizer::GetItem( size_t index )
+{
+    wxCHECK_MSG( index < m_children.GetCount(),
+                 NULL,
+                 _T("GetItem index is out of range") );
+
+    return m_children.Item( index )->GetData();
+}
+
+wxSizerItem* wxSizer::GetItemById( int id, bool recursive )
+{
+    // This gets a sizer item by the id of the sizer item
+    // and NOT the id of a window if the item is a window.
+
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetId() == id)
+        {
+            return item;
+        }
+        else if (recursive && item->IsSizer())
+        {
+            wxSizerItem *subitem = item->GetSizer()->GetItemById( id, true );
+            if (subitem)
+                return subitem;
+        }
+
+        node = node->GetNext();
+    }
+
+    return NULL;
+}
+
+bool wxSizer::Show( wxWindow *window, bool show, bool recursive )
+{
+    wxSizerItem *item = GetItem( window, recursive );
+
+    if ( item )
+    {
+         item->Show( show );
+         return true;
+    }
+
+    return false;
+}
+
+bool wxSizer::Show( wxSizer *sizer, bool show, bool recursive )
+{
+    wxSizerItem *item = GetItem( sizer, recursive );
+
+    if ( item )
+    {
+         item->Show( show );
+         return true;
+    }
+
+    return false;
+}
+
+bool wxSizer::Show( size_t index, bool show)
+{
+    wxSizerItem *item = GetItem( index );
+
+    if ( item )
+    {
+         item->Show( show );
+         return true;
+    }
+
+    return false;
+}
+
+void wxSizer::ShowItems( bool show )
+{
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        node->GetData()->Show( show );
+        node = node->GetNext();
+    }
+}
+
+bool wxSizer::IsShown( wxWindow *window ) const
+{
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            return item->IsShown();
+        }
+        node = node->GetNext();
+    }
+
+    wxFAIL_MSG( _T("IsShown failed to find sizer item") );
+
+    return false;
+}
+
+bool wxSizer::IsShown( wxSizer *sizer ) const
+{
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            return item->IsShown();
+        }
+        node = node->GetNext();
+    }
+
+    wxFAIL_MSG( _T("IsShown failed to find sizer item") );
+
+    return false;
+}
+
+bool wxSizer::IsShown( size_t index ) const
+{
+    wxCHECK_MSG( index < m_children.GetCount(),
+                 false,
+                 _T("IsShown index is out of range") );
+
+    return m_children.Item( index )->GetData()->IsShown();
+}
+
+

 //---------------------------------------------------------------------------
 // wxGridSizer
 //---------------------------------------------------------------------------
 
 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
 //---------------------------------------------------------------------------
 // wxGridSizer
 //---------------------------------------------------------------------------
 
 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )

+    : m_rows( ( cols == 0 && rows == 0 ) ? 1 : rows )
+    , m_cols( cols )
+    , m_vgap( vgap )
+    , m_hgap( hgap )

 {
 {

-    m_rows = rows;
-    m_cols = cols;
-    m_vgap = vgap;
-    m_hgap = hgap;

 }
 
 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
 }
 
 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )

+    : m_rows( cols == 0 ? 1 : 0 )
+    , m_cols( cols )
+    , m_vgap( vgap )
+    , m_hgap( hgap )

 {
 {

-    m_rows = 0;
-    m_cols = cols;
-    m_vgap = vgap;
-    m_hgap = hgap;

 }
 
 }
 

-void wxGridSizer::RecalcSizes()
+int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const

 {
 {

-    if (m_children.GetCount() == 0)
-        return;
+    const int nitems = m_children.GetCount();
+    if ( m_cols && m_rows )
+    {
+        // if both rows and columns are specified by user, use the provided
+        // values even if we don't have enough items but check that we don't
+        // have too many of them as this is going to result in problems later
+        ncols = m_cols;
+        nrows = m_rows;

 
 

-    int nitems = m_children.GetCount();
-    int nrows = m_rows;
-    int ncols = m_cols;
+        wxASSERT_MSG( ncols*nrows >= nitems, "too many items in grid sizer" );
+    }
+    else if ( m_cols )
+    {
+        ncols = m_cols;
+        nrows = (nitems + m_cols - 1) / m_cols;
+    }
+    else if ( m_rows )
+    {
+        ncols = (nitems + m_rows - 1) / m_rows;
+        nrows = m_rows;
+    }
+    else // 0 columns, 0 rows?
+    {
+        wxFAIL_MSG( _T("grid sizer must have either rows or columns fixed") );

 
 

-    if (ncols > 0)
-        nrows = (nitems + ncols-1) / ncols;
-    else
-        ncols = (nitems + nrows-1) / nrows;
+        nrows =
+        ncols = 0;
+    }
+
+    return nitems;
+}
+
+void wxGridSizer::RecalcSizes()
+{
+    int nitems, nrows, ncols;
+    if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
+        return;

 
     wxSize sz( GetSize() );
     wxPoint pt( GetPosition() );
 
     wxSize sz( GetSize() );
     wxPoint pt( GetPosition() );


@@ -528,10 +1388,11 @@ void wxGridSizer::RecalcSizes()
             int i = r * ncols + c;
             if (i < nitems)
             {
             int i = r * ncols + c;
             if (i < nitems)
             {

-                wxNode *node = m_children.Nth( i );
-                wxASSERT( node );
+                wxSizerItemList::compatibility_iterator node = m_children.Item( i );
+
+                wxASSERT_MSG( node, _T("Failed to find SizerItemList node") );

 
 

-                SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
+                SetItemBounds( node->GetData(), x, y, w, h);

             }
             y = y + h + m_vgap;
         }
             }
             y = y + h + m_vgap;
         }


@@ -541,41 +1402,63 @@ void wxGridSizer::RecalcSizes()
 
 wxSize wxGridSizer::CalcMin()
 {
 
 wxSize wxGridSizer::CalcMin()
 {

-    if (m_children.GetCount() == 0)
-        return wxSize(10,10);
-
-    int nitems = m_children.GetCount();
-    int nrows = m_rows;
-    int ncols = m_cols;
-
-    if (ncols > 0)
-        nrows = (nitems + ncols-1) / ncols;
-    else
-        ncols = (nitems + nrows-1) / nrows;
+    int nrows, ncols;
+    if ( CalcRowsCols(nrows, ncols) == 0 )
+        return wxSize();

 
 

-    /* Find the max width and height for any component */
+    // Find the max width and height for any component

     int w = 0;
     int h = 0;
 
     int w = 0;
     int h = 0;
 

-    wxNode *node = m_children.First();
+    wxSizerItemList::compatibility_iterator node = m_children.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        wxSize sz( item->CalcMin() );
+        wxSizerItem     *item = node->GetData();
+        wxSize           sz( item->CalcMin() );
+

         w = wxMax( w, sz.x );
         h = wxMax( h, sz.y );
 
         w = wxMax( w, sz.x );
         h = wxMax( h, sz.y );
 

-        node = node->Next();
+        node = node->GetNext();
+    }
+
+    // In case we have a nested sizer with a two step algo , give it
+    // a chance to adjust to that (we give it width component)
+    node = m_children.GetFirst();
+    bool didChangeMinSize = false;
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+        didChangeMinSize |= item->InformFirstDirection( wxHORIZONTAL, w, -1 );
+
+        node = node->GetNext();
+    }
+
+    // And redo iteration in case min size changed
+    if( didChangeMinSize )
+    {
+        node = m_children.GetFirst();
+        w = h = 0;
+        while (node)
+        {
+            wxSizerItem     *item = node->GetData();
+            wxSize           sz( item->GetMinSizeWithBorder() );
+
+            w = wxMax( w, sz.x );
+            h = wxMax( h, sz.y );
+
+            node = node->GetNext();
+        }

     }
 
     }
 

-    return wxSize(ncols * w + (ncols-1) * m_hgap,
-                  nrows * h + (nrows-1) * m_vgap);
+    return wxSize( ncols * w + (ncols-1) * m_hgap,
+                   nrows * h + (nrows-1) * m_vgap );

 }
 
 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 {
     wxPoint pt( x,y );
 }
 
 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 {
     wxPoint pt( x,y );

-    wxSize sz( item->CalcMin() );
+    wxSize sz( item->GetMinSizeWithBorder() );

     int flag = item->GetFlag();
 
     if ((flag & wxEXPAND) || (flag & wxSHAPED))
     int flag = item->GetFlag();
 
     if ((flag & wxEXPAND) || (flag & wxSHAPED))


@@ -611,353 +1494,644 @@ void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 //---------------------------------------------------------------------------
 
 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
 //---------------------------------------------------------------------------
 
 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )

-   : wxGridSizer( rows, cols, vgap, hgap )
+               : wxGridSizer( rows, cols, vgap, hgap ),
+                 m_flexDirection(wxBOTH),
+                 m_growMode(wxFLEX_GROWMODE_SPECIFIED)

 {
 {

-    m_rowHeights = (int*) NULL;
-    m_colWidths = (int*) NULL;

 }
 
 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
 }
 
 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )

-   : wxGridSizer( cols, vgap, hgap )
+               : wxGridSizer( cols, vgap, hgap ),
+                 m_flexDirection(wxBOTH),
+                 m_growMode(wxFLEX_GROWMODE_SPECIFIED)

 {
 {

-    m_rowHeights = (int*) NULL;
-    m_colWidths = (int*) NULL;

 }
 
 wxFlexGridSizer::~wxFlexGridSizer()
 {
 }
 
 wxFlexGridSizer::~wxFlexGridSizer()
 {

-    if (m_rowHeights)
-        delete[] m_rowHeights;
-    if (m_colWidths)
-        delete[] m_colWidths;

 }
 
 }
 

-void wxFlexGridSizer::CreateArrays()
+void wxFlexGridSizer::RecalcSizes()

 {
 {

-    if (m_rowHeights)
-        delete[] m_rowHeights;
-    if (m_colWidths)
-        delete[] m_colWidths;
-
-    if (m_children.GetCount() == 0)
+    int nrows, ncols;
+    if ( !CalcRowsCols(nrows, ncols) )

         return;
 
         return;
 

-    int nitems = m_children.GetCount();
-    int nrows = m_rows;
-    int ncols = m_cols;
+    const wxPoint pt(GetPosition());
+    const wxSize sz(GetSize());

 
 

-    if (ncols > 0)
-        nrows = (nitems + ncols-1) / ncols;
-    else
-        ncols = (nitems + nrows-1) / nrows;
+    AdjustForGrowables(sz);
+
+    wxSizerItemList::const_iterator i = m_children.begin();
+    const wxSizerItemList::const_iterator end = m_children.end();
+
+    int y = 0;
+    for ( int r = 0; r < nrows; r++ )
+    {
+        if ( m_rowHeights[r] == -1 )
+        {
+            // this row is entirely hidden, skip it
+            for ( int c = 0; c < ncols; c++ )
+            {
+                if ( i == end )
+                    return;
+
+                ++i;
+            }
+
+            continue;
+        }
+
+        const int hrow = m_rowHeights[r];
+        int h = sz.y - y; // max remaining height, don't overflow it
+        if ( hrow < h )
+            h = hrow;
+
+        int x = 0;
+        for ( int c = 0; c < ncols && i != end; c++, ++i )
+        {
+            const int wcol = m_colWidths[c];
+
+            if ( wcol == -1 )
+                continue;
+
+            int w = sz.x - x; // max possible value, ensure we don't overflow
+            if ( wcol < w )
+                w = wcol;

 
 

-    m_rowHeights = new int[nrows];
-    m_colWidths = new int[ncols];
+            SetItemBounds(*i, pt.x + x, pt.y + y, w, h);

 
 

-    for (int col = 0; col < ncols; col++)
-        m_colWidths[ col ] = 0;
-    for (int row = 0; row < nrows; row++)
-        m_rowHeights[ row ] = 0;
+            x += wcol + m_hgap;
+        }
+
+        if ( i == end )
+            return;
+
+        y += hrow + m_vgap;
+    }

 }
 
 }
 

-void wxFlexGridSizer::RecalcSizes()
+// helper function used in CalcMin() to sum up the sizes of non-hidden items
+static int SumArraySizes(const wxArrayInt& sizes, int gap)

 {
 {

-    if (m_children.GetCount() == 0)
-        return;
+    // Sum total minimum size, including gaps between rows/columns.
+    // -1 is used as a magic number meaning empty row/column.
+    int total = 0;

 
 

-    int nitems = m_children.GetCount();
-    int nrows = m_rows;
-    int ncols = m_cols;
+    const size_t count = sizes.size();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        if ( sizes[n] != -1 )
+        {
+            if ( total )
+                total += gap; // separate from the previous column

 
 

-    if (ncols > 0)
-        nrows = (nitems + ncols-1) / ncols;
-    else
-        ncols = (nitems + nrows-1) / nrows;
+            total += sizes[n];
+        }
+    }

 
 

-    wxSize sz( GetSize() );
-    wxSize minsz( CalcMin() );
-    wxPoint pt( GetPosition() );
-    int    delta;
-    size_t idx;
+    return total;
+}

 
 

-    if ((m_growableRows.GetCount() > 0) && (sz.y > minsz.y))
+void wxFlexGridSizer::FindWidthsAndHeights(int nrows, int ncols)
+{
+    // We have to recalculate the sizes in case the item minimum size has
+    // changed since the previous layout, or the item has been hidden using
+    // wxSizer::Show(). If all the items in a row/column are hidden, the final
+    // dimension of the row/column will be -1, indicating that the column
+    // itself is hidden.
+    m_rowHeights.assign(nrows, -1);
+    m_colWidths.assign(ncols, -1);
+
+    // n is the index of the item in left-to-right top-to-bottom order
+    size_t n = 0;
+    for ( wxSizerItemList::iterator i = m_children.begin();
+          i != m_children.end();
+          ++i, ++n )

     {
     {

-        delta = (sz.y - minsz.y) / m_growableRows.GetCount();
-        for (idx = 0; idx < m_growableRows.GetCount(); idx++)
-            m_rowHeights[ m_growableRows[idx] ] += delta;
+        wxSizerItem * const item = *i;
+        if ( item->IsShown() )
+        {
+            // NOTE: Not doing the calculation here, this is just
+            // for finding max values.
+            const wxSize sz(item->GetMinSizeWithBorder());
+
+            const int row = n / ncols;
+            const int col = n % ncols;
+
+            if ( sz.y > m_rowHeights[row] )
+                m_rowHeights[row] = sz.y;
+            if ( sz.x > m_colWidths[col] )
+                m_colWidths[col] = sz.x;
+        }

     }
 
     }
 

-    if ((m_growableCols.GetCount() > 0) && (sz.x > minsz.x))
+    AdjustForFlexDirection();
+
+    m_calculatedMinSize = wxSize(SumArraySizes(m_colWidths, m_hgap),
+                                 SumArraySizes(m_rowHeights, m_vgap));
+}
+
+wxSize wxFlexGridSizer::CalcMin()
+{
+    int nrows,
+        ncols;
+
+    // Number of rows/columns can change as items are added or removed.
+    if ( !CalcRowsCols(nrows, ncols) )
+        return wxSize();
+
+
+    // We have to recalculate the sizes in case the item minimum size has
+    // changed since the previous layout, or the item has been hidden using
+    // wxSizer::Show(). If all the items in a row/column are hidden, the final
+    // dimension of the row/column will be -1, indicating that the column
+    // itself is hidden.
+    m_rowHeights.assign(nrows, -1);
+    m_colWidths.assign(ncols, -1);
+
+    for ( wxSizerItemList::iterator i = m_children.begin();
+          i != m_children.end();
+          ++i)

     {
     {

-        delta = (sz.x - minsz.x) / m_growableCols.GetCount();
-        for (idx = 0; idx < m_growableCols.GetCount(); idx++)
-            m_colWidths[ m_growableCols[idx] ] += delta;
+        wxSizerItem * const item = *i;
+        if ( item->IsShown() )
+        {
+            item->CalcMin();
+        }

     }
 
     }
 

-    sz = wxSize( pt.x + sz.x, pt.y + sz.y );
+    // The stage of looking for max values in each row/column has been
+    // made a separate function, since it's reused in AdjustForGrowables.
+    FindWidthsAndHeights(nrows,ncols);

 
 

-    int x = pt.x;
-    for (int c = 0; c < ncols; c++)
+    return m_calculatedMinSize;
+}
+
+void wxFlexGridSizer::AdjustForFlexDirection()
+{
+    // the logic in CalcMin works when we resize flexibly in both directions
+    // but maybe this is not the case
+    if ( m_flexDirection != wxBOTH )

     {
     {

-        int y = pt.y;
-        for (int r = 0; r < nrows; r++)
-        {
-            int i = r * ncols + c;
-            if (i < nitems)
-            {
-                wxNode *node = m_children.Nth( i );
-                wxASSERT( node );
+        // select the array corresponding to the direction in which we do *not*
+        // resize flexibly
+        wxArrayInt& array = m_flexDirection == wxVERTICAL ? m_colWidths
+                                                          : m_rowHeights;

 
 

-                int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
-                int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
+        const size_t count = array.GetCount();

 
 

-                SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
-            }
-            y = y + m_rowHeights[r] + m_vgap;
+        // find the largest value in this array
+        size_t n;
+        int largest = 0;
+
+        for ( n = 0; n < count; ++n )
+        {
+            if ( array[n] > largest )
+                largest = array[n];
+        }
+
+        // and now fill it with the largest value
+        for ( n = 0; n < count; ++n )
+        {
+            // don't touch hidden rows
+            if ( array[n] != -1 )
+                array[n] = largest;

         }
         }

-        x = x + m_colWidths[c] + m_hgap;

     }
 }
 
     }
 }
 

-wxSize wxFlexGridSizer::CalcMin()
+// helper of AdjustForGrowables() which is called for rows/columns separately
+//
+// parameters:
+//      delta: the extra space, we do nothing unless it's positive
+//      growable: indices or growable rows/cols in sizes array
+//      sizes: the height/widths of rows/cols to adjust
+//      proportions: proportions of the growable rows/cols or NULL if they all
+//                   should be assumed to have proportion of 1
+static void
+DoAdjustForGrowables(int delta,
+                     const wxArrayInt& growable,
+                     wxArrayInt& sizes,
+                     const wxArrayInt *proportions)

 {
 {

-    if (m_children.GetCount() == 0)
-        return wxSize(10,10);
+    if ( delta <= 0 )
+        return;

 
 

-    int nitems = m_children.GetCount();
-    int nrows = m_rows;
-    int ncols = m_cols;
+    // total sum of proportions of all non-hidden rows
+    int sum_proportions = 0;

 
 

-    if (ncols > 0)
-        nrows = (nitems + ncols-1) / ncols;
-    else
-        ncols = (nitems + nrows-1) / nrows;
+    // number of currently shown growable rows
+    int num = 0;

 
 

-    CreateArrays();
+    const int max_idx = sizes.size();

 
 

-    int col;
-    int row;
+    const size_t count = growable.size();
+    size_t idx;
+    for ( idx = 0; idx < count; idx++ )
+    {
+        // Since the number of rows/columns can change as items are
+        // inserted/deleted, we need to verify at runtime that the
+        // requested growable rows/columns are still valid.
+        if ( growable[idx] >= max_idx )
+            continue;
+
+        // If all items in a row/column are hidden, that row/column will
+        // have a dimension of -1.  This causes the row/column to be
+        // hidden completely.
+        if ( sizes[growable[idx]] == -1 )
+            continue;
+
+        if ( proportions )
+            sum_proportions += (*proportions)[idx];
+
+        num++;
+    }

 
 

-    int i = 0;
-    wxNode *node = m_children.First();
-    while (node)
+    if ( !num )
+        return;
+
+    // the remaining extra free space, adjusted during each iteration
+    for ( idx = 0; idx < count; idx++ )
+    {
+        if ( growable[idx] >= max_idx )
+            continue;
+
+        if ( sizes[ growable[idx] ] == -1 )
+            continue;
+
+        int cur_delta;
+        if ( sum_proportions == 0 )
+        {
+            // no growable rows -- divide extra space evenly among all
+            cur_delta = delta/num;
+            num--;
+        }
+        else // allocate extra space proportionally
+        {
+            const int cur_prop = (*proportions)[idx];
+            cur_delta = (delta*cur_prop)/sum_proportions;
+            sum_proportions -= cur_prop;
+        }
+
+        sizes[growable[idx]] += cur_delta;
+        delta -= cur_delta;
+    }
+}
+
+void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz)
+{
+#ifdef __WXDEBUG__
+    // by the time this function is called, the sizer should be already fully
+    // initialized and hence the number of its columns and rows is known and we
+    // can check that all indices in m_growableCols/Rows are valid (see also
+    // comments in AddGrowableCol/Row())
+    if ( !m_rows || !m_cols )

     {
     {

-        wxSizerItem *item = (wxSizerItem*)node->Data();
-        wxSize sz( item->CalcMin() );
-        row = i / ncols;
-        col = i % ncols;
-        m_rowHeights[ row ] = wxMax( sz.y, m_rowHeights[ row ] );
-        m_colWidths[ col ] = wxMax( sz.x, m_colWidths[ col ] );
+        int nrows, ncols;
+        CalcRowsCols(nrows, ncols);
+
+        if ( !m_rows )
+        {
+            for ( size_t n = 0; n < m_growableRows.size(); n++ )
+            {
+                wxASSERT_MSG( m_growableRows[n] < nrows,
+                              "invalid growable row index" );
+            }
+        }

 
 

-        node = node->Next();
-        i++;
+        if ( !m_cols )
+        {
+            for ( size_t n = 0; n < m_growableCols.size(); n++ )
+            {
+                wxASSERT_MSG( m_growableCols[n] < ncols,
+                              "invalid growable column index" );
+            }
+        }

     }
     }

+#endif // __WXDEBUG__
+
+
+    if ( (m_flexDirection & wxHORIZONTAL) || (m_growMode != wxFLEX_GROWMODE_NONE) )
+    {
+        DoAdjustForGrowables
+        (
+            sz.x - m_calculatedMinSize.x,
+            m_growableCols,
+            m_colWidths,
+            m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions
+                                                    : NULL
+        );
+
+        // This gives nested objects that benefit from knowing one size
+        // component in advance the chance to use that.
+        bool didAdjustMinSize = false;
+        int nrows, ncols;
+        CalcRowsCols(nrows, ncols);
+
+        // Iterate over all items and inform about column width
+        size_t n = 0;
+        for ( wxSizerItemList::iterator i = m_children.begin();
+              i != m_children.end();
+              ++i, ++n )
+        {
+            const int col = n % ncols;
+            didAdjustMinSize |= (*i)->InformFirstDirection(wxHORIZONTAL, m_colWidths[col], sz.y - m_calculatedMinSize.y);
+        }

 
 

-    int width = 0;
-    for (col = 0; col < ncols; col++)
-        width += m_colWidths[ col ];
+        // Only redo if info was actually used
+        if( didAdjustMinSize )
+        {
+            DoAdjustForGrowables
+            (
+                sz.x - m_calculatedMinSize.x,
+                m_growableCols,
+                m_colWidths,
+                m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions
+                                                        : NULL
+            );
+        }
+    }

 
 

-    int height = 0;
-    for (row = 0; row < nrows; row++)
-        height += m_rowHeights[ row ];
+    if ( (m_flexDirection & wxVERTICAL) || (m_growMode != wxFLEX_GROWMODE_NONE) )
+    {
+        // pass NULL instead of proportions if the grow mode is ALL as we
+        // should treat all rows as having proportion of 1 then
+        DoAdjustForGrowables
+        (
+            sz.y - m_calculatedMinSize.y,
+            m_growableRows,
+            m_rowHeights,
+            m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableRowsProportions
+                                                    : NULL
+        );
+    }
+}

 
 

-    return wxSize( width +  (ncols-1) * m_hgap,
-                   height + (nrows-1) * m_vgap);
+bool wxFlexGridSizer::IsRowGrowable( size_t idx )
+{
+    return m_growableRows.Index( idx ) != wxNOT_FOUND;

 }
 
 }
 

-void wxFlexGridSizer::AddGrowableRow( size_t idx )
+bool wxFlexGridSizer::IsColGrowable( size_t idx )

 {
 {

-    m_growableRows.Add( idx );
+    return m_growableCols.Index( idx ) != wxNOT_FOUND;

 }
 
 }
 

-void wxFlexGridSizer::RemoveGrowableRow( size_t WXUNUSED(idx) )
+void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion )

 {
 {

+    int nrows, ncols;
+    CalcRowsCols(nrows, ncols);
+
+    wxASSERT_MSG( !IsRowGrowable( idx ),
+                  "AddGrowableRow() called for growable row" );
+
+    // notice that we intentionally don't check the index validity here in (the
+    // common) case when the number of rows was not specified in the ctor -- in
+    // this case it will be computed only later, when all items are added to
+    // the sizer, and the check will be done in AdjustForGrowables()
+    wxCHECK_RET( !m_rows || idx < (size_t)m_rows, "invalid row index" );
+
+    m_growableRows.Add( idx );
+    m_growableRowsProportions.Add( proportion );

 }
 
 }
 

-void wxFlexGridSizer::AddGrowableCol( size_t idx )
+void wxFlexGridSizer::AddGrowableCol( size_t idx, int proportion )

 {
 {

+    int nrows, ncols;
+    CalcRowsCols(nrows, ncols);
+
+    wxASSERT_MSG( !IsColGrowable( idx ),
+                  "AddGrowableCol() called for growable column" );
+
+    // see comment in AddGrowableRow(): although it's less common to omit the
+    // specification of the number of columns, it still can also happen
+    wxCHECK_RET( !m_cols || idx < (size_t)ncols, "invalid column index" );
+

     m_growableCols.Add( idx );
     m_growableCols.Add( idx );

+    m_growableColsProportions.Add( proportion );

 }
 
 }
 

-void wxFlexGridSizer::RemoveGrowableCol( size_t WXUNUSED(idx) )
+// helper function for RemoveGrowableCol/Row()
+static void
+DoRemoveFromArrays(size_t idx, wxArrayInt& items, wxArrayInt& proportions)

 {
 {

+    const size_t count = items.size();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        if ( (size_t)items[n] == idx )
+        {
+            items.RemoveAt(n);
+            proportions.RemoveAt(n);
+            return;
+        }
+    }
+
+    wxFAIL_MSG( _T("column/row is already not growable") );

 }
 
 }
 

-//---------------------------------------------------------------------------
-// wxBoxSizer
-//---------------------------------------------------------------------------
+void wxFlexGridSizer::RemoveGrowableCol( size_t idx )
+{
+    DoRemoveFromArrays(idx, m_growableCols, m_growableColsProportions);
+}

 
 

-wxBoxSizer::wxBoxSizer( int orient )
+void wxFlexGridSizer::RemoveGrowableRow( size_t idx )

 {
 {

-    m_orient = orient;
+    DoRemoveFromArrays(idx, m_growableRows, m_growableRowsProportions);

 }
 
 }
 

+//---------------------------------------------------------------------------
+// wxBoxSizer
+//---------------------------------------------------------------------------
+

 void wxBoxSizer::RecalcSizes()
 {
 void wxBoxSizer::RecalcSizes()
 {

-    if (m_children.GetCount() == 0)
+    if ( m_children.empty() )

         return;
 
         return;
 

-    int delta = 0;
-    int extra = 0;
-    if (m_stretchable)
+    const wxCoord totalMinorSize = GetSizeInMinorDir(m_size);
+
+    // the amount of free space which we should redistribute among the
+    // stretchable items (i.e. those with non zero proportion)
+    int delta = GetSizeInMajorDir(m_size) - GetSizeInMajorDir(m_minSize);
+
+
+    // Inform child items about the size in minor direction, that can
+    // change how much free space we have in major dir and how to distribute it.
+    int majorMinSum = 0;
+    wxSizerItemList::const_iterator i ;
+    for ( i = m_children.begin();
+          i != m_children.end();
+          ++i )

     {
     {

-        if (m_orient == wxHORIZONTAL)
-        {
-            delta = (m_size.x - m_fixedWidth) / m_stretchable;
-            extra = (m_size.x - m_fixedWidth) % m_stretchable;
-        }
-        else
+        wxSizerItem * const item = *i;
+
+        if ( !item->IsShown() )
+            continue;
+
+        wxSize szMinPrev = item->GetMinSizeWithBorder();
+        item->InformFirstDirection(m_orient^wxBOTH,totalMinorSize,delta);
+        wxSize szMin = item->GetMinSizeWithBorder();
+        int deltaChange = GetSizeInMajorDir(szMin-szMinPrev);
+        if( deltaChange )

         {
         {

-            delta = (m_size.y - m_fixedHeight) / m_stretchable;
-            extra = (m_size.y - m_fixedHeight) % m_stretchable;
+            // Since we passed available space along to the item, it should not
+            // take too much, so delta should not become negative.
+            delta -= deltaChange;

         }
         }

+        majorMinSum += GetSizeInMajorDir(item->GetMinSizeWithBorder());

     }
     }

+    // And update our min size
+    SizeInMajorDir(m_minSize) = majorMinSum;

 
 

-    wxPoint pt( m_position );

 
 

-    wxNode *node = m_children.GetFirst();
-    while (node)
+    // might have a new delta now
+    delta = GetSizeInMajorDir(m_size) - GetSizeInMajorDir(m_minSize);
+
+    // the position at which we put the next child
+    wxPoint pt(m_position);
+
+    int totalProportion = m_totalProportion;
+    for ( i = m_children.begin();
+          i != m_children.end();
+          ++i )

     {
     {

-        wxSizerItem *item = (wxSizerItem*) node->Data();
+        wxSizerItem * const item = *i;

 
 

-        int weight = 1;
-        if (item->GetOption())
-            weight = item->GetOption();
+        if ( !item->IsShown() )
+            continue;

 
 

-        wxSize size( item->CalcMin() );
+        const wxSize sizeThis(item->GetMinSizeWithBorder());

 
 

-        if (m_orient == wxVERTICAL)
+        // adjust the size in the major direction using the proportion
+        wxCoord majorSize = GetSizeInMajorDir(sizeThis);
+
+        // if there is not enough space, don't try to distribute negative space
+        // among the children, this would result in overlapping windows which
+        // we don't want
+        if ( delta > 0 )

         {
         {

-            wxCoord height = size.y;
-            if (item->GetOption())
+            const int propItem = item->GetProportion();
+            if ( propItem )

             {
             {

-                height = (delta * weight) + extra;
-                extra = 0; // only the first item will get the remainder as extra size
-            }
+                const int deltaItem = (delta * propItem) / totalProportion;

 
 

-            wxPoint child_pos( pt );
-            wxSize  child_size( wxSize( size.x, height) );
+                majorSize += deltaItem;

 
 

-            if (item->GetFlag() & (wxEXPAND | wxSHAPED))
-                child_size.x = m_size.x;
-            else if (item->GetFlag() & wxALIGN_RIGHT)
-                child_pos.x += m_size.x - size.x;
-            else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
-            // XXX wxCENTER is added for backward compatibility;
-            //     wxALIGN_CENTER should be used in new code
-                child_pos.x += (m_size.x - size.x) / 2;
+                delta -= deltaItem;
+                totalProportion -= propItem;
+            }
+        }

 
 

-            item->SetDimension( child_pos, child_size );

 
 

-            pt.y += height;
+        // apply the alignment in the minor direction
+        wxPoint posChild(pt);
+
+        wxCoord minorSize = GetSizeInMinorDir(sizeThis);
+        const int flag = item->GetFlag();
+        if ( flag & (wxEXPAND | wxSHAPED) )
+        {
+            minorSize = totalMinorSize;

         }
         }

-        else
+        else if ( flag & (IsVertical() ? wxALIGN_RIGHT : wxALIGN_BOTTOM) )

         {
         {

-            wxCoord width = size.x;
-            if (item->GetOption())
-            {
-                width = (delta * weight) + extra;
-                extra = 0; // only the first item will get the remainder as extra size
-            }
-
-            wxPoint child_pos( pt );
-            wxSize  child_size( wxSize(width, size.y) );
-
-            if (item->GetFlag() & (wxEXPAND | wxSHAPED))
-                child_size.y = m_size.y;
-            else if (item->GetFlag() & wxALIGN_BOTTOM)
-                child_pos.y += m_size.y - size.y;
-            else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
-            // XXX wxCENTER is added for backward compatibility;
-            //     wxALIGN_CENTER should be used in new code
-                child_pos.y += (m_size.y - size.y) / 2;
+            PosInMinorDir(posChild) += totalMinorSize - minorSize;
+        }
+        // NB: wxCENTRE is used here only for backwards compatibility,
+        //     wxALIGN_CENTRE should be used in new code
+        else if ( flag & (wxCENTER | (IsVertical() ? wxALIGN_CENTRE_HORIZONTAL : wxALIGN_CENTRE_VERTICAL)))
+        {
+            PosInMinorDir(posChild) += (totalMinorSize - minorSize) / 2;
+        }

 
 

-            item->SetDimension( child_pos, child_size );

 
 

-            pt.x += width;
+        // apply RTL adjustment for horizontal sizers:
+        if ( !IsVertical() && m_containingWindow )
+        {
+            posChild.x = m_containingWindow->AdjustForLayoutDirection
+                                             (
+                                                posChild.x,
+                                                majorSize,
+                                                m_size.x
+                                             );

         }
 
         }
 

-        node = node->Next();
+        // finally set size of this child and advance to the next one
+        item->SetDimension(posChild, SizeFromMajorMinor(majorSize, minorSize));
+
+        PosInMajorDir(pt) += majorSize;

     }
 }
 
 wxSize wxBoxSizer::CalcMin()
 {
     }
 }
 
 wxSize wxBoxSizer::CalcMin()
 {

-    if (m_children.GetCount() == 0)
-        return wxSize(10,10);
-
-    m_stretchable = 0;
-    m_minWidth = 0;
-    m_minHeight = 0;
-    m_fixedWidth = 0;
-    m_fixedHeight = 0;
+    m_totalProportion = 0;
+    m_minSize = wxSize(0, 0);

 
 

-    wxNode *node = m_children.GetFirst();
-    while (node)
+    // calculate the minimal sizes for all items and count sum of proportions
+    for ( wxSizerItemList::const_iterator i = m_children.begin();
+          i != m_children.end();
+          ++i )

     {
     {

-        wxSizerItem *item = (wxSizerItem*) node->Data();
-
-        int weight = 1;
-        if (item->GetOption())
-            weight = item->GetOption();
+        wxSizerItem * const item = *i;

 
 

-        wxSize size( item->CalcMin() );
-
-        if (m_orient == wxHORIZONTAL)
-        {
-            m_minWidth += (size.x * weight);
-            m_minHeight = wxMax( m_minHeight, size.y );
-        }
-        else
-        {
-            m_minHeight += (size.y * weight);
-            m_minWidth = wxMax( m_minWidth, size.x );
-        }
+        if ( !item->IsShown() )
+            continue;

 
 

-        if (item->GetOption())
-        {
-            m_stretchable += weight;
-        }
-        else
-        {
-            if (m_orient == wxVERTICAL)
-            {
-                m_fixedHeight += size.y;
-                m_fixedWidth = wxMax( m_fixedWidth, size.x );
-            }
-            else
-            {
-                m_fixedWidth += size.x;
-                m_fixedHeight = wxMax( m_fixedHeight, size.y );
-            }
-        }
+        const wxSize sizeMinThis = item->CalcMin();
+        SizeInMajorDir(m_minSize) += GetSizeInMajorDir(sizeMinThis);
+        if ( GetSizeInMinorDir(sizeMinThis) > GetSizeInMinorDir(m_minSize) )
+            SizeInMinorDir(m_minSize) = GetSizeInMinorDir(sizeMinThis);

 
 

-        node = node->Next();
+        m_totalProportion += item->GetProportion();

     }
 
     }
 

-    return wxSize( m_minWidth, m_minHeight );
+    return m_minSize;

 }
 
 //---------------------------------------------------------------------------
 // wxStaticBoxSizer
 //---------------------------------------------------------------------------
 
 }
 
 //---------------------------------------------------------------------------
 // wxStaticBoxSizer
 //---------------------------------------------------------------------------
 

+#if wxUSE_STATBOX
+

 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )

-  : wxBoxSizer( orient )
+    : wxBoxSizer( orient ),
+      m_staticBox( box )

 {
     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
 
 {
     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
 

-    m_staticBox = box;
+    // do this so that our Detach() is called if the static box is destroyed
+    // before we are
+    m_staticBox->SetContainingSizer(this);
+}
+
+wxStaticBoxSizer::wxStaticBoxSizer(int orient, wxWindow *win, const wxString& s)
+                : wxBoxSizer(orient),
+                  m_staticBox(new wxStaticBox(win, wxID_ANY, s))
+{
+    // same as above
+    m_staticBox->SetContainingSizer(this);
+}
+
+wxStaticBoxSizer::~wxStaticBoxSizer()
+{
+    delete m_staticBox;
+}
+
+static void GetStaticBoxBorders( wxStaticBox *box,
+                                 int *borderTop,
+                                 int *borderOther)
+{
+    // this has to be done platform by platform as there is no way to
+    // guess the thickness of a wxStaticBox border
+    box->GetBordersForSizer(borderTop, borderOther);

 }
 
 void wxStaticBoxSizer::RecalcSizes()
 {
 }
 
 void wxStaticBoxSizer::RecalcSizes()
 {

-    // this will have to be done platform by platform
-    // as there is no way to guess the thickness of
-    // a wxStaticBox border
-    int top_border = 15;
-    if (m_staticBox->GetLabel().IsEmpty()) top_border = 5;
-    int other_border = 5;
+    int top_border, other_border;
+    GetStaticBoxBorders(m_staticBox, &top_border, &other_border);

 
     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
 
 
     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
 


@@ -976,13 +2150,8 @@ void wxStaticBoxSizer::RecalcSizes()
 
 wxSize wxStaticBoxSizer::CalcMin()
 {
 
 wxSize wxStaticBoxSizer::CalcMin()
 {

-    // This will have to be done platform by platform
-    // as there is no way to guess the thickness of
-    // a wxStaticBox border.
-
-    int top_border = 15;
-    if (m_staticBox->GetLabel().IsEmpty()) top_border = 5;
-    int other_border = 5;
+    int top_border, other_border;
+    GetStaticBoxBorders(m_staticBox, &top_border, &other_border);

 
     wxSize ret( wxBoxSizer::CalcMin() );
     ret.x += 2*other_border;
 
     wxSize ret( wxBoxSizer::CalcMin() );
     ret.x += 2*other_border;


@@ -991,66 +2160,211 @@ wxSize wxStaticBoxSizer::CalcMin()
     return ret;
 }
 
     return ret;
 }
 

-//---------------------------------------------------------------------------
-// wxNotebookSizer
-//---------------------------------------------------------------------------
-
-#if wxUSE_NOTEBOOK
+void wxStaticBoxSizer::ShowItems( bool show )
+{
+    m_staticBox->Show( show );
+    wxBoxSizer::ShowItems( show );
+}

 
 

-wxNotebookSizer::wxNotebookSizer( wxNotebook *nb )
+bool wxStaticBoxSizer::Detach( wxWindow *window )

 {
 {

-    wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a notebook") );
+    // avoid deleting m_staticBox in our dtor if it's being detached from the
+    // sizer (which can happen because it's being already destroyed for
+    // example)
+    if ( window == m_staticBox )
+    {
+        m_staticBox = NULL;
+        return true;
+    }

 
 

-    m_notebook = nb;
+    return wxSizer::Detach( window );

 }
 
 }
 

-void wxNotebookSizer::RecalcSizes()
+#endif // wxUSE_STATBOX
+
+#if wxUSE_BUTTON
+
+wxStdDialogButtonSizer::wxStdDialogButtonSizer()
+    : wxBoxSizer(wxHORIZONTAL)

 {
 {

-    m_notebook->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
+    // Vertical buttons with lots of space on either side
+    // looks rubbish on WinCE, so let's not do this for now.
+    // If we are going to use vertical buttons, we should
+    // put the sizer to the right of other controls in the dialog,
+    // and that's beyond the scope of this sizer.
+#ifndef __WXWINCE__
+    bool is_pda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
+    // If we have a PDA screen, put yes/no button over
+    // all other buttons, otherwise on the left side.
+    if (is_pda)
+        m_orient = wxVERTICAL;
+#endif
+
+    m_buttonAffirmative = NULL;
+    m_buttonApply = NULL;
+    m_buttonNegative = NULL;
+    m_buttonCancel = NULL;
+    m_buttonHelp = NULL;

 }
 
 }
 

-wxSize wxNotebookSizer::CalcMin()
+void wxStdDialogButtonSizer::AddButton(wxButton *mybutton)

 {
 {

-    // This will have to be done platform by platform
-    // as there is no way to guess the thickness of
-    // the wxNotebook tabs and border.
-
-    int borderX = 5;
-    int borderY = 5;
-    if ((m_notebook->HasFlag(wxNB_RIGHT)) ||
-        (m_notebook->HasFlag(wxNB_LEFT)))
+    switch (mybutton->GetId())

     {
     {

-        borderX += 90; // improvements later..
-    }
-    else
-    {
-        borderY += 40; // improvements later..
+        case wxID_OK:
+        case wxID_YES:
+        case wxID_SAVE:
+            m_buttonAffirmative = mybutton;
+            break;
+        case wxID_APPLY:
+            m_buttonApply = mybutton;
+            break;
+        case wxID_NO:
+            m_buttonNegative = mybutton;
+            break;
+        case wxID_CANCEL:
+        case wxID_CLOSE:
+            m_buttonCancel = mybutton;
+            break;
+        case wxID_HELP:
+        case wxID_CONTEXT_HELP:
+            m_buttonHelp = mybutton;
+            break;
+        default:
+            break;

     }
     }

+}

 
 

-    if (m_notebook->GetChildren().GetCount() == 0)
-        return wxSize(borderX + 10, borderY + 10);
+void wxStdDialogButtonSizer::SetAffirmativeButton( wxButton *button )
+{
+    m_buttonAffirmative = button;
+}
+
+void wxStdDialogButtonSizer::SetNegativeButton( wxButton *button )
+{
+    m_buttonNegative = button;
+}

 
 

-    int maxX = 0;
-    int maxY = 0;
+void wxStdDialogButtonSizer::SetCancelButton( wxButton *button )
+{
+    m_buttonCancel = button;
+}

 
 

-    wxWindowList::Node *node = m_notebook->GetChildren().GetFirst();
-    while (node)
-    {
-        wxWindow *item = node->GetData();
-        wxSizer *itemsizer = item->GetSizer();
+void wxStdDialogButtonSizer::Realize()
+{
+#ifdef __WXMAC__
+        Add(0, 0, 0, wxLEFT, 6);
+        if (m_buttonHelp)
+            Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
+
+        if (m_buttonNegative){
+            // HIG POLICE BULLETIN - destructive buttons need extra padding
+            // 24 pixels on either side
+            Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 12);
+        }

 
 

-        if (itemsizer)
-        {
-            wxSize subsize( itemsizer->CalcMin() );
+        // extra whitespace between help/negative and cancel/ok buttons
+        Add(0, 0, 1, wxEXPAND, 0);

 
 

-            if (subsize.x > maxX) maxX = subsize.x;
-            if (subsize.y > maxY) maxY = subsize.y;
+        if (m_buttonCancel){
+            Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
+            // Cancel or help should be default
+            // m_buttonCancel->SetDefaultButton();

         }
 
         }
 

-        node = node->GetNext();
-    }
+        // Ugh, Mac doesn't really have apply dialogs, so I'll just
+        // figure the best place is between Cancel and OK
+        if (m_buttonApply)
+            Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
+
+        if (m_buttonAffirmative){
+            Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6);
+
+            if (m_buttonAffirmative->GetId() == wxID_SAVE){
+                // these buttons have set labels under Mac so we should use them
+                m_buttonAffirmative->SetLabel(_("Save"));
+                if (m_buttonNegative)
+                    m_buttonNegative->SetLabel(_("Don't Save"));
+            }
+        }
+
+        // Extra space around and at the right
+        Add(12, 40);
+#elif defined(__WXGTK20__)
+        Add(0, 0, 0, wxLEFT, 9);
+        if (m_buttonHelp)
+            Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
+
+        // extra whitespace between help and cancel/ok buttons
+        Add(0, 0, 1, wxEXPAND, 0);
+
+        if (m_buttonNegative){
+            Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
+        }
+
+        // according to HIG, in explicit apply windows the order is:
+        // [ Help                     Apply   Cancel   OK ]
+        if (m_buttonApply)
+            Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
+
+        if (m_buttonCancel){
+            Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
+            // Cancel or help should be default
+            // m_buttonCancel->SetDefaultButton();
+        }
+
+        if (m_buttonAffirmative)
+            Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6);
+#elif defined(__WXMSW__)
+        // Windows
+
+        // right-justify buttons
+        Add(0, 0, 1, wxEXPAND, 0);
+
+        if (m_buttonAffirmative){
+            Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonAffirmative->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+
+        if (m_buttonNegative){
+            Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonNegative->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+
+        if (m_buttonCancel){
+            Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonCancel->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+        if (m_buttonApply)
+            Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonApply->ConvertDialogToPixels(wxSize(2, 0)).x);
+
+        if (m_buttonHelp)
+            Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonHelp->ConvertDialogToPixels(wxSize(2, 0)).x);
+#else
+        // GTK+1 and any other platform
+
+        // Add(0, 0, 0, wxLEFT, 5); // Not sure what this was for but it unbalances the dialog
+        if (m_buttonHelp)
+            Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonHelp->ConvertDialogToPixels(wxSize(4, 0)).x);
+
+        // extra whitespace between help and cancel/ok buttons
+        Add(0, 0, 1, wxEXPAND, 0);

 
 

-    return wxSize( borderX + maxX, borderY + maxY );
+        if (m_buttonApply)
+            Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonApply->ConvertDialogToPixels(wxSize(4, 0)).x);
+
+        if (m_buttonAffirmative){
+            Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonAffirmative->ConvertDialogToPixels(wxSize(4, 0)).x);
+        }
+
+        if (m_buttonNegative){
+            Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonNegative->ConvertDialogToPixels(wxSize(4, 0)).x);
+        }
+
+        if (m_buttonCancel){
+            Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonCancel->ConvertDialogToPixels(wxSize(4, 0)).x);
+            // Cancel or help should be default
+            // m_buttonCancel->SetDefaultButton();
+        }
+
+#endif

 }
 
 }
 

-#endif // wxUSE_NOTEBOOK
+#endif // wxUSE_BUTTON