]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/dlgcmn.cpp
minimize searching for tlw parent, remove useless code
[wxWidgets.git] / src / common / dlgcmn.cpp
index eccae2934a189fde363b7e6b89660b3c87ec78a8..e386099c3aa9e5354fd9cb4aa3d5085196563758 100644 (file)
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        common/dlgcmn.cpp
+// Name:        src/common/dlgcmn.cpp
 // Purpose:     common (to all ports) wxDialog functions
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     28.06.99
 // RCS-ID:      $Id$
 // Copyright:   (c) Vadim Zeitlin
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ----------------------------------------------------------------------------
 
-#if 0
-#ifdef __GNUG__
-    #pragma implementation
-#endif
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
     #pragma hdrstop
 #endif
 
+#include "wx/dialog.h"
+
 #ifndef WX_PRECOMP
-    #include "wx/dialog.h"
+    #include "wx/app.h"
+    #include "wx/button.h"
     #include "wx/dcclient.h"
     #include "wx/intl.h"
     #include "wx/settings.h"
     #include "wx/stattext.h"
+    #include "wx/sizer.h"
+    #include "wx/containr.h"
+#endif
+
+#include "wx/statline.h"
+#include "wx/sysopt.h"
+#include "wx/module.h"
+#include "wx/private/stattext.h"
+#include "wx/bookctrl.h"
+#include "wx/scrolwin.h"
+
+#if wxUSE_DISPLAY
+#include "wx/display.h"
 #endif
 
 // ----------------------------------------------------------------------------
-// constants
+// wxDialogBase
 // ----------------------------------------------------------------------------
 
-const long wxDialogBase::LAYOUT_X_MARGIN = 5;
-const long wxDialogBase::LAYOUT_Y_MARGIN = 5;
+BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
+    EVT_BUTTON(wxID_ANY, wxDialogBase::OnButton)
 
-const long wxDialogBase::MARGIN_BETWEEN_BUTTONS = 3*LAYOUT_X_MARGIN;
+    EVT_CLOSE(wxDialogBase::OnCloseWindow)
 
-// ============================================================================
-// implementation
-// ============================================================================
+    EVT_CHAR_HOOK(wxDialogBase::OnCharHook)
+END_EVENT_TABLE()
+
+wxDialogLayoutAdapter* wxDialogBase::sm_layoutAdapter = NULL;
+bool wxDialogBase::sm_layoutAdaptation = false;
+
+void wxDialogBase::Init()
+{
+    m_returnCode = 0;
+    m_affirmativeId = wxID_OK;
+    m_escapeId = wxID_ANY;
+    m_layoutAdaptationLevel = 3;
+    m_layoutAdaptationDone = FALSE;
+    m_layoutAdaptationMode = wxDIALOG_ADAPTATION_MODE_DEFAULT;
+
+    // the dialogs have this flag on by default to prevent the events from the
+    // dialog controls from reaching the parent frame which is usually
+    // undesirable and can lead to unexpected and hard to find bugs
+    SetExtraStyle(GetExtraStyle() | wxWS_EX_BLOCK_EVENTS);
+}
+
+// helper of GetParentForModalDialog()
+static bool CanBeUsedAsParent(wxWindow *parent)
+{
+    extern WXDLLIMPEXP_DATA_CORE(wxList) wxPendingDelete;
+
+    return !parent->HasExtraStyle(wxWS_EX_TRANSIENT) &&
+                parent->IsShownOnScreen() &&
+                    !wxPendingDelete.Member(parent) &&
+                        !parent->IsBeingDeleted();
+}
+
+wxWindow *wxDialogBase::GetParentForModalDialog(wxWindow *parent) const
+{
+    // creating a parent-less modal dialog will result (under e.g. wxGTK2)
+    // in an unfocused dialog, so try to find a valid parent for it:
+    if ( parent )
+        parent = wxGetTopLevelParent(parent);
+
+    if ( !parent || !CanBeUsedAsParent(parent) )
+        parent = wxTheApp->GetTopWindow();
+
+    if ( parent && !CanBeUsedAsParent(parent) )
+    {
+        // can't use this one, it's going to disappear
+        parent = NULL;
+    }
+
+    return parent;
+}
+
+#if wxUSE_STATTEXT
+
+class wxTextSizerWrapper : public wxTextWrapper
+{
+public:
+    wxTextSizerWrapper(wxWindow *win)
+    {
+        m_win = win;
+        m_hLine = 0;
+    }
+
+    wxSizer *CreateSizer(const wxString& text, int widthMax)
+    {
+        m_sizer = new wxBoxSizer(wxVERTICAL);
+        Wrap(m_win, text, widthMax);
+        return m_sizer;
+    }
+
+protected:
+    virtual void OnOutputLine(const wxString& line)
+    {
+        if ( !line.empty() )
+        {
+            m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
+        }
+        else // empty line, no need to create a control for it
+        {
+            if ( !m_hLine )
+                m_hLine = m_win->GetCharHeight();
+
+            m_sizer->Add(5, m_hLine);
+        }
+    }
+
+private:
+    wxWindow *m_win;
+    wxSizer *m_sizer;
+    int m_hLine;
+};
+
+wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
+{
+    // I admit that this is complete bogus, but it makes
+    // message boxes work for pda screens temporarily..
+    int widthMax = -1;
+    const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
+    if (is_pda)
+    {
+        widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
+    }
+
+    // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
+    // the static messages created by CreateTextSizer() (used by wxMessageBox,
+    // for example), we don't want this special meaning, so we need to quote it
+    wxString text(message);
+    text.Replace(_T("&"), _T("&&"));
+
+    wxTextSizerWrapper wrapper(this);
+
+    return wrapper.CreateSizer(text, widthMax);
+}
+
+#endif // wxUSE_STATTEXT
+
+wxSizer *wxDialogBase::CreateButtonSizer(long flags)
+{
+    wxSizer *sizer = NULL;
+
+#ifdef __SMARTPHONE__
+    wxDialog* dialog = (wxDialog*) this;
+    if ( flags & wxOK )
+        dialog->SetLeftMenu(wxID_OK);
+
+    if ( flags & wxCANCEL )
+        dialog->SetRightMenu(wxID_CANCEL);
+
+    if ( flags & wxYES )
+        dialog->SetLeftMenu(wxID_YES);
+
+    if ( flags & wxNO )
+        dialog->SetRightMenu(wxID_NO);
+#else // !__SMARTPHONE__
+
+#if wxUSE_BUTTON
+
+#ifdef __POCKETPC__
+    // PocketPC guidelines recommend for Ok/Cancel dialogs to use OK button
+    // located inside caption bar and implement Cancel functionality through
+    // Undo outside dialog. As native behaviour this will be default here but
+    // can be replaced with real wxButtons by setting the option below to 1
+    if ( (flags & ~(wxCANCEL|wxNO_DEFAULT)) != wxOK ||
+            wxSystemOptions::GetOptionInt(wxT("wince.dialog.real-ok-cancel")) )
+#endif // __POCKETPC__
+    {
+        sizer = CreateStdDialogButtonSizer(flags);
+    }
+#else // !wxUSE_BUTTON
+    wxUnusedVar(flags);
+#endif // wxUSE_BUTTON/!wxUSE_BUTTON
+
+#endif // __SMARTPHONE__/!__SMARTPHONE__
+
+    return sizer;
+}
+
+wxSizer *wxDialogBase::CreateSeparatedButtonSizer(long flags)
+{
+    wxSizer *sizer = CreateButtonSizer(flags);
+    if ( !sizer )
+        return NULL;
+
+    // Mac Human Interface Guidelines recommend not to use static lines as
+    // grouping elements
+#if wxUSE_STATLINE && !defined(__WXMAC__)
+    wxBoxSizer *topsizer = new wxBoxSizer(wxVERTICAL);
+    topsizer->Add(new wxStaticLine(this),
+                   wxSizerFlags().Expand().DoubleBorder(wxBOTTOM));
+    topsizer->Add(sizer, wxSizerFlags().Expand());
+    sizer = topsizer;
+#endif // wxUSE_STATLINE
+
+    return sizer;
+}
+
+#if wxUSE_BUTTON
+
+wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
+{
+    wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
+
+    wxButton *ok = NULL;
+    wxButton *yes = NULL;
+    wxButton *no = NULL;
+
+    if (flags & wxOK)
+    {
+        ok = new wxButton(this, wxID_OK);
+        sizer->AddButton(ok);
+    }
+
+    if (flags & wxCANCEL)
+    {
+        wxButton *cancel = new wxButton(this, wxID_CANCEL);
+        sizer->AddButton(cancel);
+    }
+
+    if (flags & wxYES)
+    {
+        yes = new wxButton(this, wxID_YES);
+        sizer->AddButton(yes);
+    }
+
+    if (flags & wxNO)
+    {
+        no = new wxButton(this, wxID_NO);
+        sizer->AddButton(no);
+    }
+
+    if (flags & wxAPPLY)
+    {
+        wxButton *apply = new wxButton(this, wxID_APPLY);
+        sizer->AddButton(apply);
+    }
+
+    if (flags & wxCLOSE)
+    {
+        wxButton *close = new wxButton(this, wxID_CLOSE);
+        sizer->AddButton(close);
+    }
+
+    if (flags & wxHELP)
+    {
+        wxButton *help = new wxButton(this, wxID_HELP);
+        sizer->AddButton(help);
+    }
+
+    if (flags & wxNO_DEFAULT)
+    {
+        if (no)
+        {
+            no->SetDefault();
+            no->SetFocus();
+        }
+    }
+    else
+    {
+        if (ok)
+        {
+            ok->SetDefault();
+            ok->SetFocus();
+        }
+        else if (yes)
+        {
+            yes->SetDefault();
+            yes->SetFocus();
+        }
+    }
+
+    if (flags & wxOK)
+        SetAffirmativeId(wxID_OK);
+    else if (flags & wxYES)
+        SetAffirmativeId(wxID_YES);
+
+    sizer->Realize();
+
+    return sizer;
+}
+
+#endif // wxUSE_BUTTON
 
 // ----------------------------------------------------------------------------
-// dialog layout functions
+// standard buttons handling
 // ----------------------------------------------------------------------------
 
-wxSize wxDialogBase::SplitTextMessage(const wxString& message,
-                                      wxArrayString *lines)
+void wxDialogBase::EndDialog(int rc)
+{
+    if ( IsModal() )
+        EndModal(rc);
+    else
+        Hide();
+}
+
+void wxDialogBase::AcceptAndClose()
+{
+    if ( Validate() && TransferDataFromWindow() )
+    {
+        EndDialog(m_affirmativeId);
+    }
+}
+
+void wxDialogBase::SetAffirmativeId(int affirmativeId)
+{
+    m_affirmativeId = affirmativeId;
+}
+
+void wxDialogBase::SetEscapeId(int escapeId)
+{
+    m_escapeId = escapeId;
+}
+
+bool wxDialogBase::EmulateButtonClickIfPresent(int id)
 {
-    wxClientDC dc(this);
-    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+#if wxUSE_BUTTON
+    wxButton *btn = wxDynamicCast(FindWindow(id), wxButton);
+
+    if ( !btn || !btn->IsEnabled() || !btn->IsShown() )
+        return false;
+
+    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
+    event.SetEventObject(btn);
+    btn->GetEventHandler()->ProcessEvent(event);
+
+    return true;
+#else // !wxUSE_BUTTON
+    wxUnusedVar(id);
+    return false;
+#endif // wxUSE_BUTTON/!wxUSE_BUTTON
+}
 
-    wxString curLine;
-    long height, width, heightTextMax = 0, widthTextMax = 0;
-    for ( const wxChar *pc = message; ; pc++ )
+bool wxDialogBase::IsEscapeKey(const wxKeyEvent& event)
+{
+    // for most platforms, Esc key is used to close the dialogs
+    return event.GetKeyCode() == WXK_ESCAPE &&
+                event.GetModifiers() == wxMOD_NONE;
+}
+
+void wxDialogBase::OnCharHook(wxKeyEvent& event)
+{
+    if ( event.GetKeyCode() == WXK_ESCAPE )
     {
-        if ( *pc == _T('\n') || !*pc )
+        int idCancel = GetEscapeId();
+        switch ( idCancel )
         {
-#if defined(__VISAGECPP__)
-// have two versions of this in wxWindowDC tp avoid function hiding
-// since there are two of these in wxDCBase, and in turn in wxDC.
-// VA cannot resolve this so:
-            dc.GetTextExtent(curLine, &width, &height, NULL, NULL, NULL, FALSE);
+            case wxID_NONE:
+                // don't handle Esc specially at all
+                break;
+
+            case wxID_ANY:
+                // this value is special: it means translate Esc to wxID_CANCEL
+                // but if there is no such button, then fall back to wxID_OK
+                if ( EmulateButtonClickIfPresent(wxID_CANCEL) )
+                    return;
+                idCancel = GetAffirmativeId();
+                // fall through
+
+            default:
+                // translate Esc to button press for the button with given id
+                if ( EmulateButtonClickIfPresent(idCancel) )
+                    return;
+        }
+    }
+
+    event.Skip();
+}
+
+void wxDialogBase::OnButton(wxCommandEvent& event)
+{
+    const int id = event.GetId();
+    if ( id == GetAffirmativeId() )
+    {
+        AcceptAndClose();
+    }
+    else if ( id == wxID_APPLY )
+    {
+        if ( Validate() )
+            TransferDataFromWindow();
+
+        // TODO: disable the Apply button until things change again
+    }
+    else if ( id == GetEscapeId() ||
+                (id == wxID_CANCEL && GetEscapeId() == wxID_ANY) )
+    {
+        EndDialog(wxID_CANCEL);
+    }
+    else // not a standard button
+    {
+        event.Skip();
+    }
+}
+
+// ----------------------------------------------------------------------------
+// other event handlers
+// ----------------------------------------------------------------------------
+
+void wxDialogBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
+{
+    // We'll send a Cancel message by default, which may close the dialog.
+    // Check for looping if the Cancel event handler calls Close().
+
+    // Note that if a cancel button and handler aren't present in the dialog,
+    // nothing will happen when you close the dialog via the window manager, or
+    // via Close(). We wouldn't want to destroy the dialog by default, since
+    // the dialog may have been created on the stack. However, this does mean
+    // that calling dialog->Close() won't delete the dialog unless the handler
+    // for wxID_CANCEL does so. So use Destroy() if you want to be sure to
+    // destroy the dialog. The default OnCancel (above) simply ends a modal
+    // dialog, and hides a modeless dialog.
+
+    // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
+    //     lists here? don't dare to change it now, but should be done later!
+    static wxList closing;
+
+    if ( closing.Member(this) )
+        return;
+
+    closing.Append(this);
+
+    wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+    cancelEvent.SetEventObject( this );
+    GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
+
+    closing.DeleteObject(this);
+}
+
+void wxDialogBase::OnSysColourChanged(wxSysColourChangedEvent& event)
+{
+#ifndef __WXGTK__
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
+    Refresh();
+#endif
+
+    event.Skip();
+}
+
+/// Do the adaptation
+bool wxDialogBase::DoLayoutAdaptation()
+{
+    if (GetLayoutAdapter())
+        return GetLayoutAdapter()->DoLayoutAdaptation((wxDialog*) this);
+    else
+        return false;
+}
+
+/// Can we do the adaptation?
+bool wxDialogBase::CanDoLayoutAdaptation()
+{
+    // Check if local setting overrides the global setting
+    bool layoutEnabled = (GetLayoutAdaptationMode() == wxDIALOG_ADAPTATION_MODE_ENABLED) || (IsLayoutAdaptationEnabled() && (GetLayoutAdaptationMode() != wxDIALOG_ADAPTATION_MODE_DISABLED));
+
+    return (layoutEnabled && !m_layoutAdaptationDone && GetLayoutAdaptationLevel() != 0 && GetLayoutAdapter() != NULL && GetLayoutAdapter()->CanDoLayoutAdaptation((wxDialog*) this));
+}
+
+/// Set scrolling adapter class, returning old adapter
+wxDialogLayoutAdapter* wxDialogBase::SetLayoutAdapter(wxDialogLayoutAdapter* adapter)
+{
+    wxDialogLayoutAdapter* oldLayoutAdapter = sm_layoutAdapter;
+    sm_layoutAdapter = adapter;
+    return oldLayoutAdapter;
+}
+
+/*!
+ * Standard adapter
+ */
+
+IMPLEMENT_CLASS(wxDialogLayoutAdapter, wxObject)
+
+IMPLEMENT_CLASS(wxStandardDialogLayoutAdapter, wxDialogLayoutAdapter)
+
+// Allow for caption size on wxWidgets < 2.9
+#if defined(__WXGTK__) && !wxCHECK_VERSION(2,9,0)
+#define wxEXTRA_DIALOG_HEIGHT 30
 #else
-            dc.GetTextExtent(curLine, &width, &height);
+#define wxEXTRA_DIALOG_HEIGHT 0
 #endif
-            if ( width > widthTextMax )
-                widthTextMax = width;
-            if ( height > heightTextMax )
-                heightTextMax = height;
 
-            lines->Add(curLine);
+/// Indicate that adaptation should be done
+bool wxStandardDialogLayoutAdapter::CanDoLayoutAdaptation(wxDialog* dialog)
+{
+    if (dialog->GetSizer())
+    {
+        wxSize windowSize, displaySize;
+        return MustScroll(dialog, windowSize, displaySize) != 0;
+    }
+    else
+        return false;
+}
+
+bool wxStandardDialogLayoutAdapter::DoLayoutAdaptation(wxDialog* dialog)
+{
+    if (dialog->GetSizer())
+    {
+#if wxUSE_BOOKCTRL
+        wxBookCtrlBase* bookContentWindow = wxDynamicCast(dialog->GetContentWindow(), wxBookCtrlBase);
 
-            if ( !*pc )
+        if (bookContentWindow)
+        {
+            // If we have a book control, make all the pages (that use sizers) scrollable
+            wxWindowList windows;
+            for (size_t i = 0; i < bookContentWindow->GetPageCount(); i++)
             {
-               // the end of string
-               break;
+                wxWindow* page = bookContentWindow->GetPage(i);
+
+                wxScrolledWindow* scrolledWindow = wxDynamicCast(page, wxScrolledWindow);
+                if (scrolledWindow)
+                    windows.Append(scrolledWindow);
+                else if (!scrolledWindow && page->GetSizer())
+                {
+                    // Create a scrolled window and reparent
+                    scrolledWindow = CreateScrolledWindow(page);
+                    wxSizer* oldSizer = page->GetSizer();
+
+                    wxSizer* newSizer = new wxBoxSizer(wxVERTICAL);
+                    newSizer->Add(scrolledWindow,1, wxEXPAND, 0);
+
+                    page->SetSizer(newSizer, false /* don't delete the old sizer */);
+
+                    scrolledWindow->SetSizer(oldSizer);
+
+                    ReparentControls(page, scrolledWindow);
+
+                    windows.Append(scrolledWindow);
+                }
             }
 
-            curLine.Empty();
+            FitWithScrolling(dialog, windows);
         }
         else
+#endif // wxUSE_BOOKCTRL
         {
-            curLine += *pc;
+            // If we have an arbitrary dialog, create a scrolling area for the main content, and a button sizer
+            // for the main buttons.
+            wxScrolledWindow* scrolledWindow = CreateScrolledWindow(dialog);
+
+            int buttonSizerBorder = 0;
+
+            // First try to find a wxStdDialogButtonSizer
+            wxSizer* buttonSizer = FindButtonSizer(true /* find std button sizer */, dialog, dialog->GetSizer(), buttonSizerBorder);
+
+            // Next try to find a wxBoxSizer containing the controls
+            if (!buttonSizer && dialog->GetLayoutAdaptationLevel() > wxDIALOG_ADAPTATION_STANDARD_SIZER)
+                buttonSizer = FindButtonSizer(false /* find ordinary sizer */, dialog, dialog->GetSizer(), buttonSizerBorder);
+
+            // If we still don't have a button sizer, collect any 'loose' buttons in the layout
+            if (!buttonSizer && dialog->GetLayoutAdaptationLevel() > wxDIALOG_ADAPTATION_ANY_SIZER)
+            {
+                int count = 0;
+                wxStdDialogButtonSizer* stdButtonSizer = new wxStdDialogButtonSizer;
+                buttonSizer = stdButtonSizer;
+
+                FindLooseButtons(dialog, stdButtonSizer, dialog->GetSizer(), count);
+                if (count > 0)
+                    stdButtonSizer->Realize();
+                else
+                {
+                    delete buttonSizer;
+                    buttonSizer = NULL;
+                }
+            }
+
+            if (buttonSizerBorder == 0)
+                buttonSizerBorder = 5;
+
+            ReparentControls(dialog, scrolledWindow, buttonSizer);
+
+            wxBoxSizer* newTopSizer = new wxBoxSizer(wxVERTICAL);
+            wxSizer* oldSizer = dialog->GetSizer();
+
+            dialog->SetSizer(newTopSizer, false /* don't delete old sizer */);
+
+            newTopSizer->Add(scrolledWindow, 1, wxEXPAND|wxALL, 0);
+            if (buttonSizer)
+                newTopSizer->Add(buttonSizer, 0, wxEXPAND|wxALL, buttonSizerBorder);
+
+            scrolledWindow->SetSizer(oldSizer);
+
+            FitWithScrolling(dialog, scrolledWindow);
         }
     }
 
-    return wxSize(widthTextMax, heightTextMax);
+    dialog->SetLayoutAdaptationDone(true);
+    return true;
 }
 
-long wxDialogBase::CreateTextMessage(const wxArrayString& lines,
-                                     const wxPoint& posText,
-                                     const wxSize& sizeText)
+// Create the scrolled window
+wxScrolledWindow* wxStandardDialogLayoutAdapter::CreateScrolledWindow(wxWindow* parent)
 {
-    wxStaticText *text;
-    int y = posText.y;
-    size_t nLineCount = lines.GetCount();
-    for ( size_t nLine = 0; nLine < nLineCount; nLine++ )
+    wxScrolledWindow* scrolledWindow = new wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL|wxVSCROLL|wxHSCROLL|wxBORDER_NONE);
+    return scrolledWindow;
+}
+
+/// Find and remove the button sizer, if any
+wxSizer* wxStandardDialogLayoutAdapter::FindButtonSizer(bool stdButtonSizer, wxDialog* dialog, wxSizer* sizer, int& retBorder, int accumlatedBorder)
+{
+    for ( wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
+          node; node = node->GetNext() )
     {
-        text = new wxStaticText(this, -1, lines[nLine],
-                                wxPoint(posText.x, y),
-                                sizeText);
-        y += sizeText.GetHeight();
-    }
+        wxSizerItem *item = node->GetData();
+        wxSizer *childSizer = item->GetSizer();
+
+        if ( childSizer )
+        {
+            int newBorder = accumlatedBorder;
+            if (item->GetFlag() & wxALL)
+                newBorder += item->GetBorder();
+
+            if (stdButtonSizer) // find wxStdDialogButtonSizer
+            {
+                wxStdDialogButtonSizer* buttonSizer = wxDynamicCast(childSizer, wxStdDialogButtonSizer);
+                if (buttonSizer)
+                {
+                    sizer->Detach(childSizer);
+                    retBorder = newBorder;
+                    return buttonSizer;
+                }
+            }
+            else // find a horizontal box sizer containing standard buttons
+            {
+                wxBoxSizer* buttonSizer = wxDynamicCast(childSizer, wxBoxSizer);
+                if (buttonSizer && IsOrdinaryButtonSizer(dialog, buttonSizer))
+                {
+                    sizer->Detach(childSizer);
+                    retBorder = newBorder;
+                    return buttonSizer;
+                }
+            }
 
-    return y;
+            wxSizer* s = FindButtonSizer(stdButtonSizer, dialog, childSizer, retBorder, newBorder);
+            if (s)
+                return s;
+        }
+    }
+    return NULL;
 }
 
-wxSize wxDialogBase::GetStandardButtonSize(bool hasCancel)
+/// Check if this sizer contains standard buttons, and so can be repositioned in the dialog
+bool wxStandardDialogLayoutAdapter::IsOrdinaryButtonSizer(wxDialog* dialog, wxBoxSizer* sizer)
 {
-    int wButton = 0;
-    GetTextExtent(_("OK"), &wButton, NULL);
+    if (sizer->GetOrientation() != wxHORIZONTAL)
+        return false;
 
-    if ( hasCancel )
+    for ( wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
+          node; node = node->GetNext() )
     {
-        int width;
-        GetTextExtent(_("Cancel"), &width, NULL);
-        if ( width > wButton )
-            wButton = width;
+        wxSizerItem *item = node->GetData();
+        wxButton *childButton = wxDynamicCast(item->GetWindow(), wxButton);
+
+        if (childButton && IsStandardButton(dialog, childButton))
+            return true;
     }
+    return false;
+}
 
-    if ( wButton < 75 )
+/// Check if this is a standard button
+bool wxStandardDialogLayoutAdapter::IsStandardButton(wxDialog* dialog, wxButton* button)
+{
+    wxWindowID id = button->GetId();
+
+    return (id == wxID_OK || id == wxID_CANCEL || id == wxID_YES || id == wxID_NO || id == wxID_SAVE ||
+            id == wxID_APPLY || id == wxID_HELP || id == wxID_CONTEXT_HELP || dialog->IsMainButtonId(id));
+}
+
+/// Find 'loose' main buttons in the existing layout and add them to the standard dialog sizer
+bool wxStandardDialogLayoutAdapter::FindLooseButtons(wxDialog* dialog, wxStdDialogButtonSizer* buttonSizer, wxSizer* sizer, int& count)
+{
+    wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
+    while (node)
     {
-        // the minimal acceptable width
-        wButton = 75;
+        wxSizerItemList::compatibility_iterator next = node->GetNext();
+        wxSizerItem *item = node->GetData();
+        wxSizer *childSizer = item->GetSizer();
+        wxButton *childButton = wxDynamicCast(item->GetWindow(), wxButton);
+
+        if (childButton && IsStandardButton(dialog, childButton))
+        {
+            sizer->Detach(childButton);
+            buttonSizer->AddButton(childButton);
+            count ++;
+        }
+
+        if (childSizer)
+            FindLooseButtons(dialog, buttonSizer, childSizer, count);
+
+        node = next;
     }
-    else
+    return true;
+}
+
+/// Reparent the controls to the scrolled window
+void wxStandardDialogLayoutAdapter::ReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer)
+{
+    DoReparentControls(parent, reparentTo, buttonSizer);
+}
+
+void wxStandardDialogLayoutAdapter::DoReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer)
+{
+    wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
+    while (node)
     {
-        // the width of the button is not just the width of the label...
-        wButton += 2*LAYOUT_X_MARGIN;
+        wxWindowList::compatibility_iterator next = node->GetNext();
+
+        wxWindow *win = node->GetData();
+
+        // Don't reparent the scrolled window or buttons in the button sizer
+        if (win != reparentTo && (!buttonSizer || !buttonSizer->GetItem(win)))
+        {
+            win->Reparent(reparentTo);
+#ifdef __WXMSW__
+            // Restore correct tab order
+            ::SetWindowPos((HWND) win->GetHWND(), HWND_BOTTOM, -1, -1, -1, -1, SWP_NOMOVE|SWP_NOSIZE);
+#endif
+        }
+
+        node = next;
     }
+}
+
+/// Find whether scrolling will be necessary for the dialog, returning wxVERTICAL, wxHORIZONTAL or both
+int wxStandardDialogLayoutAdapter::MustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize)
+{
+    return DoMustScroll(dialog, windowSize, displaySize);
+}
+
+/// Find whether scrolling will be necessary for the dialog, returning wxVERTICAL, wxHORIZONTAL or both
+int wxStandardDialogLayoutAdapter::DoMustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize)
+{
+    wxSize minWindowSize = dialog->GetSizer()->GetMinSize();
+    windowSize = dialog->GetSize();
+    windowSize = wxSize(wxMax(windowSize.x, minWindowSize.x), wxMax(windowSize.y, minWindowSize.y));
+#if wxUSE_DISPLAY
+    displaySize = wxDisplay(wxDisplay::GetFromWindow(dialog)).GetClientArea().GetSize();
+#else
+    displaySize = wxGetClientDisplayRect().GetSize();
+#endif
+
+    int flags = 0;
 
-    // a nice looking proportion
-    int hButton = (wButton * 23) / 75;
+    if (windowSize.y >= (displaySize.y - wxEXTRA_DIALOG_HEIGHT))
+        flags |= wxVERTICAL;
+    if (windowSize.x >= displaySize.x)
+        flags |= wxHORIZONTAL;
 
-    return wxSize(wButton, hButton);
+    return flags;
 }
 
-void wxDialogBase::CreateStandardButtons(long wDialog,
-                                         long y,
-                                         long wButton,
-                                         long hButton,
-                                         bool hasCancel)
+// A function to fit the dialog around its contents, and then adjust for screen size.
+// If scrolled windows are passed, scrolling is enabled in the required orientation(s).
+bool wxStandardDialogLayoutAdapter::FitWithScrolling(wxDialog* dialog, wxWindowList& windows)
 {
-    // NB: create [Ok] first to get the right tab order
-    wxButton *ok = (wxButton *) NULL;
-    wxButton *cancel = (wxButton *) NULL;
+    return DoFitWithScrolling(dialog, windows);
+}
 
-    long x = wDialog / 2;
-    if ( hasCancel )
-        x -= MARGIN_BETWEEN_BUTTONS / 2 + wButton;
-    else
-        x -= wButton / 2;
+// A function to fit the dialog around its contents, and then adjust for screen size.
+// If a scrolled window is passed, scrolling is enabled in the required orientation(s).
+bool wxStandardDialogLayoutAdapter::FitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow)
+{
+    return DoFitWithScrolling(dialog, scrolledWindow);
+}
+
+// A function to fit the dialog around its contents, and then adjust for screen size.
+// If a scrolled window is passed, scrolling is enabled in the required orientation(s).
+bool wxStandardDialogLayoutAdapter::DoFitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow)
+{
+    wxWindowList windows;
+    windows.Append(scrolledWindow);
+    return DoFitWithScrolling(dialog, windows);
+}
+
+bool wxStandardDialogLayoutAdapter::DoFitWithScrolling(wxDialog* dialog, wxWindowList& windows)
+{
+    wxSizer* sizer = dialog->GetSizer();
+    if (!sizer)
+        return false;
 
-    ok = new wxButton( this, wxID_OK, _("OK"),
-                       wxPoint(x, y),
-                       wxSize(wButton, hButton) );
+    sizer->SetSizeHints(dialog);
 
-    if ( hasCancel )
+    wxSize windowSize, displaySize;
+    int scrollFlags = DoMustScroll(dialog, windowSize, displaySize);
+    int scrollBarSize = 20;
+
+    if (scrollFlags)
     {
-        x += MARGIN_BETWEEN_BUTTONS + wButton;
-        cancel = new wxButton( this, wxID_CANCEL, _("Cancel"),
-                               wxPoint(x, y),
-                               wxSize(wButton, hButton) );
+        int scrollBarExtraX = 0, scrollBarExtraY = 0;
+        bool resizeHorizontally = (scrollFlags & wxHORIZONTAL) != 0;
+        bool resizeVertically = (scrollFlags & wxVERTICAL) != 0;
+
+        if (windows.GetCount() != 0)
+        {
+            // Allow extra for a scrollbar, assuming we resizing in one direction only.
+            if ((resizeVertically && !resizeHorizontally) && (windowSize.x < (displaySize.x - scrollBarSize)))
+                scrollBarExtraX = scrollBarSize;
+            if ((resizeHorizontally && !resizeVertically) && (windowSize.y < (displaySize.y - scrollBarSize)))
+                scrollBarExtraY = scrollBarSize;
+        }
+
+        wxWindowList::compatibility_iterator node = windows.GetFirst();
+        while (node)
+        {
+            wxWindow *win = node->GetData();
+            wxScrolledWindow* scrolledWindow = wxDynamicCast(win, wxScrolledWindow);
+            if (scrolledWindow)
+            {
+                scrolledWindow->SetScrollRate(resizeHorizontally ? 10 : 0, resizeVertically ? 10 : 0);
+
+                if (scrolledWindow->GetSizer())
+                    scrolledWindow->GetSizer()->Fit(scrolledWindow);
+            }
+
+            node = node->GetNext();
+        }
+
+        wxSize limitTo = windowSize + wxSize(scrollBarExtraX, scrollBarExtraY);
+        if (resizeVertically)
+            limitTo.y = displaySize.y - wxEXTRA_DIALOG_HEIGHT;
+        if (resizeHorizontally)
+            limitTo.x = displaySize.x;
+
+        dialog->SetMinSize(limitTo);
+        dialog->SetSize(limitTo);
+
+        dialog->SetSizeHints( limitTo.x, limitTo.y, dialog->GetMaxWidth(), dialog->GetMaxHeight() );
     }
 
-    ok->SetDefault();
-    ok->SetFocus();
+    return true;
 }
 
-long wxDialogBase::GetStandardTextHeight()
+/*!
+ * Module to initialise standard adapter
+ */
+
+class wxDialogLayoutAdapterModule: public wxModule
 {
-    return (3*GetCharHeight()) / 2;
-}
+    DECLARE_DYNAMIC_CLASS(wxDialogLayoutAdapterModule)
+public:
+    wxDialogLayoutAdapterModule() {}
+    virtual void OnExit() { delete wxDialogBase::SetLayoutAdapter(NULL); }
+    virtual bool OnInit() { wxDialogBase::SetLayoutAdapter(new wxStandardDialogLayoutAdapter); return true; }
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxDialogLayoutAdapterModule, wxModule)