Add association between wxOSX wxTextWidgetImpl and wxTextEntry.

This allows to always find the correct wxTextEntry to use in the
implementation of text-related widgets without using any casts. Notably, the
wrong up-cast of wxWindow to wxTextCtrl in wxNSTextFieldControl::controlAction()
which resulted in a crash when the window was actually a wxComboBox can now be
fixed.

Closes #12284.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65129 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

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

@@ -20,7 +20,12 @@
 class wxNSTextFieldControl : public wxWidgetCocoaImpl, public wxTextWidgetImpl
 {
 public :
-    wxNSTextFieldControl( wxWindow *wxPeer, WXWidget w );
+    // wxNSTextFieldControl must always be associated with a wxTextEntry. If
+    // it's associated with a wxTextCtrl then we can get the associated entry
+    // from it but otherwise the second ctor should be used to explicitly pass
+    // us the entry.
+    wxNSTextFieldControl( wxTextCtrl *text, WXWidget w );
+    wxNSTextFieldControl( wxWindow *wxPeer, wxTextEntry *entry, WXWidget w );
     virtual ~wxNSTextFieldControl();
 
     virtual wxString GetStringValue() const ;
@@ -36,10 +41,15 @@ public :
     virtual bool HasOwnContextMenu() const { return true; }
 
     virtual void controlAction(WXWidget slf, void* _cmd, void *sender);
+
 protected :
     NSTextField* m_textField;
     long m_selStart;
     long m_selEnd;
+
+private:
+    // Common part of both ctors.
+    void Init(WXWidget w);
 };
 
 class wxNSTextViewControl : public wxWidgetCocoaImpl, public wxTextWidgetImpl
@@ -78,7 +88,7 @@ protected:
 class wxNSComboBoxControl : public wxNSTextFieldControl, public wxComboWidgetImpl
 {
 public :
-    wxNSComboBoxControl( wxWindow *wxPeer, WXWidget w );
+    wxNSComboBoxControl( wxComboBox *wxPeer, WXWidget w );
     virtual ~wxNSComboBoxControl();
     
     virtual int GetSelectedItem() const;

include/wx/osx/core/private.h

@@ -103,6 +103,7 @@ class wxNonOwnedWindow;
 
 class wxMacControl;
 class wxWidgetImpl;
+class wxComboBox;
 class wxNotebook;
 class wxTextCtrl;
 
@@ -480,7 +481,7 @@ public :
                                     long extraStyle);
 
 #if wxOSX_USE_COCOA
-    static wxWidgetImplType*    CreateComboBox( wxWindowMac* wxpeer, 
+    static wxWidgetImplType*    CreateComboBox( wxComboBox* wxpeer, 
                                     wxWindowMac* parent, 
                                     wxWindowID id, 
                                     wxMenu* menu,
@@ -572,16 +573,23 @@ public:
 //
 
 class WXDLLIMPEXP_FWD_CORE wxTextAttr;
+class WXDLLIMPEXP_FWD_CORE wxTextEntry;
 
 // common interface for all implementations
 class WXDLLIMPEXP_CORE wxTextWidgetImpl
 
 {
 public :
-    wxTextWidgetImpl() {}
+    // Any widgets implementing this interface must be associated with a
+    // wxTextEntry so instead of requiring the derived classes to implement
+    // another (pure) virtual function, just take the pointer to this entry in
+    // our ctor and implement GetTextEntry() ourselves.
+    wxTextWidgetImpl(wxTextEntry *entry) : m_entry(entry) {}
 
     virtual ~wxTextWidgetImpl() {}
 
+    wxTextEntry *GetTextEntry() const { return m_entry; }
+
     virtual bool CanFocus() const { return true; }
 
     virtual wxString GetStringValue() const = 0 ;
@@ -622,6 +630,11 @@ public :
     virtual void CheckSpelling(bool WXUNUSED(check)) { }
     
     virtual wxSize GetBestSize() const { return wxDefaultSize; }
+
+private:
+    wxTextEntry * const m_entry;
+
+    wxDECLARE_NO_COPY_CLASS(wxTextWidgetImpl);
 };
 
 // common interface for all implementations

src/osx/carbon/textctrl.cpp

@@ -470,7 +470,9 @@ static pascal OSStatus wxMacUnicodeTextControlEventHandler( EventHandlerCallRef
 
 DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacUnicodeTextControlEventHandler )
 
-wxMacUnicodeTextControl::wxMacUnicodeTextControl( wxTextCtrl *wxPeer ) : wxMacControl( wxPeer )
+wxMacUnicodeTextControl::wxMacUnicodeTextControl( wxTextCtrl *wxPeer )
+    : wxMacControl( wxPeer ),
+      wxTextWidgetImpl( wxPeer )
 {
 }
 
@@ -478,7 +480,8 @@ wxMacUnicodeTextControl::wxMacUnicodeTextControl( wxTextCtrl *wxPeer,
     const wxString& str,
     const wxPoint& pos,
     const wxSize& size, long style )
-    : wxMacControl( wxPeer )
+    : wxMacControl( wxPeer ),
+      wxTextWidgetImpl( wxPeer )
 {
     m_font = wxPeer->GetFont() ;
     m_windowStyle = style ;
@@ -707,7 +710,8 @@ protected :
 } ;
 
 wxMacMLTEControl::wxMacMLTEControl( wxTextCtrl *peer )
-    : wxMacControl( peer )
+    : wxMacControl( peer ),
+      wxTextWidgetImpl( peer )
 {
     SetNeedsFocusRect( true ) ;
 }

src/osx/cocoa/combobox.mm

@@ -78,7 +78,8 @@
 }
 @end
 
-wxNSComboBoxControl::wxNSComboBoxControl( wxWindow *wxPeer, WXWidget w ) : wxNSTextFieldControl(wxPeer, w)
+wxNSComboBoxControl::wxNSComboBoxControl( wxComboBox *wxPeer, WXWidget w )
+    : wxNSTextFieldControl(wxPeer, wxPeer, w)
 {
     m_comboBox = (NSComboBox*)w;
 }
@@ -137,7 +138,7 @@ int wxNSComboBoxControl::FindString(const wxString& text) const
     return result;
 }
 
-wxWidgetImplType* wxWidgetImpl::CreateComboBox( wxWindowMac* wxpeer, 
+wxWidgetImplType* wxWidgetImpl::CreateComboBox( wxComboBox* wxpeer, 
                                     wxWindowMac* WXUNUSED(parent), 
                                     wxWindowID WXUNUSED(id), 
                                     wxMenu* menu,

src/osx/cocoa/textctrl.mm

@@ -291,7 +291,9 @@ typedef BOOL (*wxOSX_insertNewlineHandlerPtr)(NSView* self, SEL _cmd, NSControl
 
 // wxNSTextViewControl
 
-wxNSTextViewControl::wxNSTextViewControl( wxTextCtrl *wxPeer, WXWidget w ) : wxWidgetCocoaImpl(wxPeer, w)
+wxNSTextViewControl::wxNSTextViewControl( wxTextCtrl *wxPeer, WXWidget w )
+    : wxWidgetCocoaImpl(wxPeer, w),
+      wxTextWidgetImpl(wxPeer)
 {
     wxNSTextScrollView* sv = (wxNSTextScrollView*) w;
     m_scrollView = sv;
@@ -511,7 +513,21 @@ wxSize wxNSTextViewControl::GetBestSize() const
 
 // wxNSTextFieldControl
 
-wxNSTextFieldControl::wxNSTextFieldControl( wxWindow *wxPeer, WXWidget w ) : wxWidgetCocoaImpl(wxPeer, w)
+wxNSTextFieldControl::wxNSTextFieldControl( wxTextCtrl *text, WXWidget w )
+    : wxWidgetCocoaImpl(text, w),
+      wxTextWidgetImpl(text)
+{
+}
+
+wxNSTextFieldControl::wxNSTextFieldControl(wxWindow *wxPeer,
+                                           wxTextEntry *entry,
+                                           WXWidget w)
+    : wxWidgetCocoaImpl(wxPeer, w),
+      wxTextWidgetImpl(entry)
+{
+}
+
+void wxNSTextFieldControl::Init(WXWidget w)
 {
     NSTextField wxOSX_10_6_AND_LATER(<NSTextFieldDelegate>) *tf = (NSTextField*) w;
     m_textField = tf;
@@ -650,7 +666,7 @@ void wxNSTextFieldControl::controlAction(WXWidget WXUNUSED(slf),
     {
         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, wxpeer->GetId());
         event.SetEventObject( wxpeer );
-        event.SetString( static_cast<wxTextCtrl*>(wxpeer)->GetValue() );
+        event.SetString( GetTextEntry()->GetValue() );
         wxpeer->HandleWindowEvent( event );
     }
 }
@@ -694,7 +710,7 @@ wxWidgetImplType* wxWidgetImpl::CreateTextControl( wxTextCtrl* wxpeer,
         [v setBezeled:NO];
         [v setBordered:NO];
 
-        c = new wxNSTextFieldControl( wxpeer, v );
+        c = new wxNSTextFieldControl( wxpeer, wxpeer, v );
     }
 
     return c;