Add XRC handler for wxInfoBar

Update the schema and the sample to show it in action.

Closes https://github.com/wxWidgets/wxWidgets/pull/1564

include/wx/xrc/xh_all.h

@@ -45,6 +45,7 @@
 #include "wx/xrc/xh_html.h"
 #include "wx/xrc/xh_htmllbox.h"
 #include "wx/xrc/xh_hyperlink.h"
+#include "wx/xrc/xh_infobar.h"
 #include "wx/xrc/xh_listb.h"
 #include "wx/xrc/xh_listc.h"
 #include "wx/xrc/xh_listbk.h"

include/wx/xrc/xh_infobar.h

@@ -0,0 +1,36 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/xrc/xh_infobar.h
+// Purpose:     XML resource handler for wxInfoBar
+// Author:      Ilya Sinitsyn
+// Created:     2019-09-25
+// Copyright:   (c) 2019 TT-Solutions SARL
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_XH_INFOBAR_H_
+#define _WX_XH_INFOBAR_H_
+
+#include "wx/xrc/xmlres.h"
+
+#if wxUSE_XRC && wxUSE_INFOBAR
+
+class WXDLLIMPEXP_XRC wxInfoBarXmlHandler : public wxXmlResourceHandler
+{
+    wxDECLARE_DYNAMIC_CLASS(wxInfoBarXmlHandler);
+
+public:
+    wxInfoBarXmlHandler();
+    virtual wxObject *DoCreateResource() wxOVERRIDE;
+    virtual bool CanHandle(wxXmlNode *node) wxOVERRIDE;
+
+private:
+    wxShowEffect GetShowEffect(wxString const& param);
+
+    bool m_insideBar;
+
+    wxString m_effectNames[wxSHOW_EFFECT_MAX];
+};
+
+#endif // wxUSE_XRC && wxUSE_INFOBAR
+
+#endif // _WX_XH_INFOBAR_H_