Implement auto-completion support for wxTextEntry in wxOSX/Cocoa.

Both completing a set of fixed strings and dynamic completion using a custom
completer are supported, although completing the file names remains MSW-only
for now.

Note that, unlike under MSW, auto-completion under Mac is not automatic and
has to be triggered manually by calling complete: method. This is done by
pressing F5 key by default. In the future we should call it automatically on a
timer event to make it more obviously discoverable.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67526 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/textentry_osx.cpp

@@ -45,9 +45,22 @@
 #include "wx/filefn.h"
 #include "wx/sysopt.h"
 #include "wx/thread.h"
+#include "wx/textcompleter.h"
 
 #include "wx/osx/private.h"
 
+wxTextEntry::wxTextEntry()
+{
+    m_completer = NULL;
+    m_editable = true;
+    m_maxLength = 0;
+}
+
+wxTextEntry::~wxTextEntry()
+{
+    delete m_completer;
+}
+
 wxString wxTextEntry::DoGetValue() const
 {
     return GetTextPeer()->GetStringValue() ;
@@ -224,4 +237,23 @@ wxTextWidgetImpl * wxTextEntry::GetTextPeer() const
     return win ? dynamic_cast<wxTextWidgetImpl *>(win->GetPeer()) : NULL;
 }
 
+// ----------------------------------------------------------------------------
+// Auto-completion
+// ----------------------------------------------------------------------------
+
+bool wxTextEntry::DoAutoCompleteStrings(const wxArrayString& choices)
+{
+    wxTextCompleterFixed * const completer = new wxTextCompleterFixed;
+    completer->SetCompletions(choices);
+
+    return DoAutoCompleteCustom(completer);
+}
+
+bool wxTextEntry::DoAutoCompleteCustom(wxTextCompleter *completer)
+{
+    m_completer = completer;
+
+    return true;
+}
+
 #endif // wxUSE_TEXTCTRL