Add support for dynamic auto-completion in wxTextEntry.

Add wxTextCompleter class which allows to return the possible completions
dynamically and wxTextCompleter::AutoComplete() overload using it. So far this
is only implemented for wxMSW.

Also fix calling wxTextEntry::AutoComplete(wxArrayString) multiple times under
MSW, this didn't correctly update the list of shown completions before.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67511 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/textentrycmn.cpp

@@ -31,6 +31,7 @@
 #endif //WX_PRECOMP
 
 #include "wx/textentry.h"
+#include "wx/textcompleter.h"
 #include "wx/clipbrd.h"
 
 // ----------------------------------------------------------------------------
@@ -368,4 +369,22 @@ bool wxTextEntryBase::SendTextUpdatedEvent(wxWindow *win)
     return win->HandleWindowEvent(event);
 }
 
+// ----------------------------------------------------------------------------
+// auto-completion stubs
+// ----------------------------------------------------------------------------
+
+wxTextCompleter::~wxTextCompleter()
+{
+}
+
+bool wxTextEntryBase::DoAutoCompleteCustom(wxTextCompleter *completer)
+{
+    // We don't do anything here but we still need to delete the completer for
+    // consistency with the ports that do implement this method and take
+    // ownership of the pointer.
+    delete completer;
+
+    return false;
+}
+
 #endif // wxUSE_TEXTCTRL || wxUSE_COMBOBOX