Improve keyboard navigation by automatically computing a key view loop

for a window (and tab view item). This implicit key view is created
when a window is made key and does not have an explicit key view loop,
which is detected by checking the initial first responder of the
window.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@35632 72102866-910b-0410-8b05-ffd578937521

Source/NSViewPrivate.h

@@ -0,0 +1,37 @@
+/* 
+   NSViewPrivate.h
+
+   The private methods of the NSView classes
+
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   
+   This file is part of the GNUstep GUI Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; see the file COPYING.LIB.
+   If not, see <http://www.gnu.org/licenses/> or write to the 
+   Free Software Foundation, 51 Franklin Street, Fifth Floor, 
+   Boston, MA 02110-1301, USA.
+*/ 
+
+#ifndef _GNUstep_H_NSViewPrivate
+#define _GNUstep_H_NSViewPrivate
+
+#import "AppKit/NSView.h"
+
+@interface NSView (KeyViewLoop)
+- (void) _setUpKeyViewLoopWithNextKeyView: (NSView *)nextKeyView;
+- (void) _recursiveSetUpKeyViewLoopWithNextKeyView: (NSView *)nextKeyView;
+@end
+
+#endif // _GNUstep_H_NSViewPrivate