Do proper cleanup of event handlers in wxWebKitCtrl and wxMacUnicodeTextCtrl, and unset the window focus when destroying a top level window to ensure that controls do not receive events after the wx portion of the control has been destroyed.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@56767 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/private/mactext.h

@@ -103,6 +103,7 @@ protected :
 
     // contains the tag for the content (is different for password and non-password controls)
     OSType m_valueTag ;
+    WXEVENTHANDLERREF    m_macTextCtrlEventHandler ;
 public :
     ControlEditTextSelectionRec m_selection ;
 };

include/wx/mac/carbon/toplevel.h

@@ -49,6 +49,8 @@ public:
 
     virtual ~wxTopLevelWindowMac();
     
+    virtual bool Destroy();
+
     virtual wxPoint GetClientAreaOrigin() const;
 
     // Attracts the users attention to this window if the application is

src/html/htmlctrl/webkit/webkit.mm

@@ -468,7 +468,16 @@ bool wxWebKitCtrl::Create(wxWindow *parent,
 
 wxWebKitCtrl::~wxWebKitCtrl()
 {
+    MyFrameLoadMonitor* myFrameLoadMonitor = [m_webView frameLoadDelegate];
+    MyPolicyDelegate* myPolicyDelegate = [m_webView policyDelegate];
+    [m_webView setFrameLoadDelegate: nil];
+    [m_webView setPolicyDelegate: nil];
     
+    if (myFrameLoadMonitor)
+        [myFrameLoadMonitor release];
+        
+    if (myPolicyDelegate)
+        [myPolicyDelegate release];
 }
 
 // ----------------------------------------------------------------------------

src/mac/carbon/textctrl.cpp

@@ -1393,13 +1393,14 @@ bool wxMacUnicodeTextControl::Create( wxTextCtrl *wxPeer,
 
     InstallControlEventHandler( m_controlRef , GetwxMacUnicodeTextControlEventHandlerUPP(),
                                 GetEventTypeCount(unicodeTextControlEventList), unicodeTextControlEventList, this,
-                                NULL);
+                                (EventHandlerRef*) &m_macTextCtrlEventHandler);
                                 
     return true;
 }
 
 wxMacUnicodeTextControl::~wxMacUnicodeTextControl()
 {
+    ::RemoveEventHandler((EventHandlerRef) m_macTextCtrlEventHandler);
 }
 
 void wxMacUnicodeTextControl::VisibilityChanged(bool shown)

src/mac/carbon/toplevel.cpp

@@ -970,6 +970,16 @@ bool wxTopLevelWindowMac::Create(wxWindow *parent,
     return true;
 }
 
+bool wxTopLevelWindowMac::Destroy()
+{
+    // NB: this will get called during destruction if we don't do it now,
+    // and may fire a kill focus event on a control being destroyed
+    if (m_macWindow)
+        ClearKeyboardFocus( (WindowRef)m_macWindow );
+        
+    return wxTopLevelWindowBase::Destroy();
+}
+
 wxTopLevelWindowMac::~wxTopLevelWindowMac()
 {
     if ( m_macWindow )