add support for persistent controls

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58529 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/persist/bookctrl.h

@@ -0,0 +1,67 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/persist/bookctrl.h
+// Purpose:     persistence support for wxBookCtrl
+// Author:      Vadim Zeitlin
+// Created:     2009-01-19
+// RCS-ID:      $Id$
+// Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PERSIST_BOOKCTRL_H_
+#define _WX_PERSIST_BOOKCTRL_H_
+
+#include "wx/persist/window.h"
+
+#include "wx/bookctrl.h"
+
+// ----------------------------------------------------------------------------
+// string constants used by wxPersistentBookCtrl
+// ----------------------------------------------------------------------------
+
+#define wxPERSIST_BOOK_KIND "Book"
+
+#define wxPERSIST_BOOK_SELECTION "Selection"
+
+// ----------------------------------------------------------------------------
+// wxPersistentBookCtrl: supports saving/restoring book control selection
+// ----------------------------------------------------------------------------
+
+class wxPersistentBookCtrl : public wxPersistentWindow<wxBookCtrlBase>
+{
+public:
+    wxPersistentBookCtrl(wxBookCtrlBase *book)
+        : wxPersistentWindow<wxBookCtrlBase>(book)
+    {
+    }
+
+    virtual void Save() const
+    {
+        SaveValue(wxPERSIST_BOOK_SELECTION, Get()->GetSelection());
+    }
+
+    virtual bool Restore()
+    {
+        long sel;
+        if ( RestoreValue(wxPERSIST_BOOK_SELECTION, &sel) )
+        {
+            wxBookCtrlBase * const book = Get();
+            if ( sel >= 0 && (unsigned)sel < book->GetPageCount() )
+            {
+                book->SetSelection(sel);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    virtual wxString GetKind() const { return wxPERSIST_BOOK_KIND; }
+};
+
+inline wxPersistentObject *wxCreatePersistentObject(wxBookCtrlBase *book)
+{
+    return new wxPersistentBookCtrl(book);
+}
+
+#endif // _WX_PERSIST_BOOKCTRL_H_