allowing the suppression of SetValue event-triggering (needed for composite controls)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38621 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/textctrl.h

@@ -203,6 +203,18 @@ protected:
   // need to make this public because of the current implementation via callbacks
     unsigned long  m_maxLength;
     
+    bool GetTriggerOnSetValue() const 
+    { 
+        return m_triggerOnSetValue; 
+    }
+    
+    void SetTriggerOnSetValue(bool trigger) 
+    { 
+        m_triggerOnSetValue = trigger; 
+    }
+    
+    bool m_triggerOnSetValue ;
+
 private :
   wxMenu  *m_privateContextMenu;
 

src/mac/carbon/combobox.cpp

@@ -68,6 +68,7 @@ public:
         : wxTextCtrl( cb , 1 )
     {
         m_cb = cb;
+        SetTriggerOnSetValue( false );
     }
 
 protected:

src/mac/carbon/textctrl.cpp

@@ -435,6 +435,7 @@ void wxTextCtrl::Init()
 
     m_maxLength = 0;
     m_privateContextMenu = NULL;
+    m_triggerOnSetValue = true ;
 }
 
 wxTextCtrl::~wxTextCtrl()
@@ -545,10 +546,13 @@ void wxTextCtrl::SetValue(const wxString& str)
 
     GetPeer()->SetStringValue( str ) ;
 
+    if ( m_triggerOnSetValue )
+    {
         wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
         event.SetString( GetValue() );
         event.SetEventObject( this );
         GetEventHandler()->ProcessEvent( event );
+    }
 }
 
 void wxTextCtrl::SetMaxLength(unsigned long len)