Removed OS X code targeted at versions prior to OS X 10.7.

At least 10.7 is required in 3.1 anyhow, so don't check for it needlessly.

See https://github.com/wxWidgets/wxWidgets/pull/55

src/osx/cocoa/filedlg.mm

@@ -485,16 +485,6 @@ void wxFileDialog::SetupExtraControls(WXWindow nativeWindow)
     {
         m_filterPanel = CreateFilterPanel(extracontrol);
         accView = m_filterPanel->GetHandle();
-        if( HasFlag(wxFD_OPEN) )
-        {
-            if ( UMAGetSystemVersion() < 0x1060 || !HasAppKit_10_6() )
-            {
-                wxOpenPanelDelegate* del = [[wxOpenPanelDelegate alloc]init];
-                [del setFileDialog:this];
-                [panel setDelegate:del];
-                m_delegate = del;
-            }
-        }
     }
     else
     {
@@ -642,21 +632,11 @@ int wxFileDialog::ShowModal()
         [oPanel setMessage:cf.AsNSString()];
         [oPanel setAllowsMultipleSelection: (HasFlag(wxFD_MULTIPLE) ? YES : NO )];
 
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
+        [oPanel setAllowedFileTypes: (m_delegate == nil ? types : nil)];
-        if ( UMAGetSystemVersion() >= 0x1060 && HasAppKit_10_6() )
+        if ( !m_dir.IsEmpty() )
-        {
+            [oPanel setDirectoryURL:[NSURL fileURLWithPath:dir.AsNSString() 
-            [oPanel setAllowedFileTypes: (m_delegate == nil ? types : nil)];
+                                               isDirectory:YES]];
-            if ( !m_dir.IsEmpty() )
+        returnCode = [oPanel runModal];
-                [oPanel setDirectoryURL:[NSURL fileURLWithPath:dir.AsNSString() 
-                                                   isDirectory:YES]];
-            returnCode = [oPanel runModal];
-        }
-        else 
-#endif
-        {
-            returnCode = [oPanel runModalForDirectory:m_dir.IsEmpty() ? nil : dir.AsNSString()
-                                                 file:file.AsNSString() types:(m_delegate == nil ? types : nil)];
-        }
             
         ModalFinishedCallback(oPanel, returnCode);
     }

src/osx/cocoa/textctrl.mm

@@ -1099,8 +1099,6 @@ wxWidgetImplType* wxWidgetImpl::CreateTextControl( wxTextCtrl* wxpeer,
             // we have to emulate this
             [v setBezeled:NO];
             [v setBordered:NO];
-            if ( UMAGetSystemVersion() < 0x1070 )
-                c->SetNeedsFocusRect( true );
         }
         else
         {

src/osx/cocoa/toolbar.mm

@@ -1185,12 +1185,7 @@ bool wxToolBar::Realize()
                         if ( tool->IsStretchable() )
                             nsItemId = NSToolbarFlexibleSpaceItemIdentifier;
                         else 
-                        {
+                            nsItemId = NSToolbarSpaceItemIdentifier;
-                            if ( UMAGetSystemVersion() < 0x1070 )
-                                nsItemId = NSToolbarSeparatorItemIdentifier;
-                            else
-                                nsItemId = NSToolbarSpaceItemIdentifier;
-                        }
                     }
                     else
                     {
@@ -1443,12 +1438,7 @@ bool wxToolBar::DoInsertTool(size_t WXUNUSED(pos), wxToolBarToolBase *toolBase)
                     if ( tool->IsStretchable() )
                         nsItemId = NSToolbarFlexibleSpaceItemIdentifier;
                     else 
-                    {
+                        nsItemId = NSToolbarSpaceItemIdentifier;
-                        if ( UMAGetSystemVersion() < 0x1070 )
-                            nsItemId = NSToolbarSeparatorItemIdentifier;
-                        else
-                            nsItemId = NSToolbarSpaceItemIdentifier;
-                    }
 
                     NSToolbarItem* item = [[NSToolbarItem alloc] initWithItemIdentifier:nsItemId];
                     tool->SetToolbarItemRef( item );

src/osx/cocoa/window.mm

@@ -683,39 +683,15 @@ void wxWidgetCocoaImpl::SetupMouseEvent( wxMouseEvent &wxevent , NSEvent * nsEve
 
             wxevent.SetEventType( wxEVT_MOUSEWHEEL ) ;
 
-            if ( UMAGetSystemVersion() >= 0x1070 )
+            if ( [nsEvent hasPreciseScrollingDeltas] )
             {
-                if ( [nsEvent hasPreciseScrollingDeltas] )
+                deltaX = [nsEvent scrollingDeltaX];
-                {
+                deltaY = [nsEvent scrollingDeltaY];
-                    deltaX = [nsEvent scrollingDeltaX];
-                    deltaY = [nsEvent scrollingDeltaY];
-                }
-                else
-                {
-                    deltaX = [nsEvent scrollingDeltaX] * 10;
-                    deltaY = [nsEvent scrollingDeltaY] * 10;
-                }
             }
             else
             {
-                const EventRef cEvent = (EventRef) [nsEvent eventRef];
+                deltaX = [nsEvent scrollingDeltaX] * 10;
-                // see http://developer.apple.com/qa/qa2005/qa1453.html
+                deltaY = [nsEvent scrollingDeltaY] * 10;
-                // for more details on why we have to look for the exact type
-                
-                bool isMouseScrollEvent = false;
-                if ( cEvent )
-                    isMouseScrollEvent = ::GetEventKind(cEvent) == kEventMouseScroll;
-                
-                if ( isMouseScrollEvent )
-                {
-                    deltaX = [nsEvent deviceDeltaX];
-                    deltaY = [nsEvent deviceDeltaY];
-                }
-                else
-                {
-                    deltaX = ([nsEvent deltaX] * 10);
-                    deltaY = ([nsEvent deltaY] * 10);
-                }
             }
             
             wxevent.m_wheelDelta = 10;