Implement minimal support for spell checking in wxOSX too

Reuse the existing CheckSpelling() function.

Also deprecate wxTextCtrl::MacCheckSpelling() in favour of the new
portable EnableProofCheck().

include/wx/osx/cocoa/private/textimpl.h

@@ -128,6 +128,7 @@ public:
     virtual bool HasOwnContextMenu() const wxOVERRIDE { return true; }
 
     virtual void CheckSpelling(bool check) wxOVERRIDE;
+    virtual bool IsSpellingCheckEnabled() const wxOVERRIDE;
     virtual void EnableAutomaticQuoteSubstitution(bool enable) wxOVERRIDE;
     virtual void EnableAutomaticDashSubstitution(bool enable) wxOVERRIDE;
 

include/wx/osx/core/private.h

@@ -738,6 +738,7 @@ public :
     virtual int GetLineLength(long lineNo) const ;
     virtual wxString GetLineText(long lineNo) const ;
     virtual void CheckSpelling(bool WXUNUSED(check)) { }
+    virtual bool IsSpellingCheckEnabled() const { return false; }
     virtual void EnableAutomaticQuoteSubstitution(bool WXUNUSED(enable)) {}
     virtual void EnableAutomaticDashSubstitution(bool WXUNUSED(enable)) {}
 

include/wx/osx/iphone/private/textimpl.h

@@ -72,6 +72,8 @@ public:
     virtual bool HasOwnContextMenu() const { return true; }
 
     virtual void CheckSpelling(bool check);
+    virtual bool IsSpellingCheckEnabled() const;
+
     virtual wxSize GetBestSize() const;
 
 protected:

include/wx/osx/textctrl.h

@@ -97,6 +97,15 @@ public:
     virtual void Cut() wxOVERRIDE;
     virtual void Paste() wxOVERRIDE;
 
+#if wxUSE_SPELLCHECK
+    // Use native spelling and grammar checking functions (multiline only).
+    virtual bool EnableProofCheck(
+            bool enable = true,
+            const wxTextProofOptions& options = wxTextProofOptions()
+        ) wxOVERRIDE;
+    virtual bool IsProofCheckEnabled() const wxOVERRIDE;
+#endif // wxUSE_SPELLCHECK
+
     // Implementation
     // --------------
     virtual void Command(wxCommandEvent& event) wxOVERRIDE;
@@ -130,7 +139,11 @@ public:
 
     virtual void MacVisibilityChanged() wxOVERRIDE;
     virtual void MacSuperChangedPosition() wxOVERRIDE;
-    virtual void MacCheckSpelling(bool check);
+
+    // Use portable EnableProofCheck() instead now.
+#if WXWIN_COMPATIBILITY_3_0
+    wxDEPRECATED( virtual void MacCheckSpelling(bool check) );
+#endif // WXWIN_COMPATIBILITY_3_0
 
     void OSXEnableAutomaticQuoteSubstitution(bool enable);
     void OSXEnableAutomaticDashSubstitution(bool enable);

interface/wx/textctrl.h

@@ -1398,9 +1398,9 @@ public:
         available on the current platform.
 
         Currently this is supported in wxMSW (when running under Windows 8 or
-        later) and wxGTK when using GTK 3. In addition, wxMSW requires that the
-        text control has the wxTE_RICH2 style set. wxGTK3 requires that the
-        control has the wxTE_MULTILINE style.
+        later), wxGTK when using GTK 3 and wxOSX. In addition, wxMSW requires
+        that the text control has the wxTE_RICH2 style set. wxGTK3 and wxOSX
+        require that the control has the wxTE_MULTILINE style.
 
         @param enable
             Enables native proof checking if true, disables it otherwise.
@@ -1566,9 +1566,8 @@ public:
         Returns @true if proof (spell) checking is currently active on this
         control, @false otherwise.
 
-        @onlyfor{wxmsw,wxgtk}
-
-        @see EnableProofCheck()
+        This function is implemented for the same platforms as
+        EnableProofCheck() and returns @false for the other ones.
 
         @since 3.1.6
     */

src/osx/cocoa/textctrl.mm

@@ -1283,6 +1283,11 @@ void wxNSTextViewControl::CheckSpelling(bool check)
         [m_textView setContinuousSpellCheckingEnabled: check];
 }
 
+bool wxNSTextViewControl::IsSpellingCheckEnabled() const
+{
+    return m_textView && m_textView.continuousSpellCheckingEnabled;
+}
+
 void wxNSTextViewControl::EnableAutomaticQuoteSubstitution(bool enable)
 {
     if (m_textView)

src/osx/iphone/textctrl.mm

@@ -504,6 +504,11 @@ void wxUITextViewControl::CheckSpelling(bool check)
 {
 }
 
+bool wxUITextViewControl::IsSpellingCheckEnabled() const
+{
+    return false;
+}
+
 wxSize wxUITextViewControl::GetBestSize() const
 {
     wxRect r;

src/osx/textctrl_osx.cpp

@@ -124,10 +124,12 @@ void wxTextCtrl::MacVisibilityChanged()
 {
 }
 
+#if WXWIN_COMPATIBILITY_3_0
 void wxTextCtrl::MacCheckSpelling(bool check)
 {
     GetTextPeer()->CheckSpelling(check);
 }
+#endif // WXWIN_COMPATIBILITY_3_0
 
 void wxTextCtrl::OSXEnableAutomaticQuoteSubstitution(bool enable)
 {
@@ -340,6 +342,25 @@ void wxTextCtrl::Paste()
     }
 }
 
+#if wxUSE_SPELLCHECK
+
+bool wxTextCtrl::EnableProofCheck(
+        bool enable,
+        const wxTextProofOptions& WXUNUSED(options)
+    )
+{
+    GetTextPeer()->CheckSpelling(enable);
+
+    return true;
+}
+
+bool wxTextCtrl::IsProofCheckEnabled() const
+{
+    return GetTextPeer()->IsSpellingCheckEnabled();
+}
+
+#endif // wxUSE_SPELLCHECK
+
 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 {
     // By default, load the first file into the text window.