NSGestureRecognizer: create stub for class

Create stub for the NSGestureRecognizer class.

Headers/AppKit/AppKit.h

@@ -139,6 +139,7 @@
 #import <AppKit/NSDrawer.h>
 #import <AppKit/NSFileWrapper.h>
 #import <AppKit/NSFontDescriptor.h>
+#import <AppKit/NSGestureRecognizer.h>
 #import <AppKit/NSGlyphGenerator.h>
 #import <AppKit/NSGradient.h>
 #import <AppKit/NSGraphicsContext.h>

Headers/AppKit/NSGestureRecognizer.h

@@ -0,0 +1,53 @@
+/*
+   NSGestureRecognizer.h
+  
+   Abstract base class for monitoring user events
+
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   Author: Daniel Ferreira <dtf@stanford.edu>
+   Date: 2017
+
+   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_NSGestureRecognizer
+#define _GNUstep_H_NSGestureRecognizer
+
+#import <Foundation/Foundation.h>
+#import <AppKit/NSEvent.h>
+
+@interface NSGestureRecognizer : NSObject <NSCoding>
+@end
+
+@protocol NSGestureRecognizerDelegate <NSObject>
+#if GS_PROTOCOLS_HAVE_OPTIONAL
+@optional
+#else
+@end
+@interface NSGestureRecognizer (NSGestureRecognizerDelegate)
+#endif
+- (BOOL)gestureRecognizer:(NSGestureRecognizer *)gestureRecognizer shouldAttemptToRecognizeWithEvent:(NSEvent *)event;
+- (BOOL)gestureRecognizerShouldBegin:(NSGestureRecognizer *)gestureRecognizer;
+- (BOOL)gestureRecognizer:(NSGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(NSGestureRecognizer *)otherGestureRecognizer;
+- (BOOL)gestureRecognizer:(NSGestureRecognizer *)gestureRecognizer shouldRequireFailureOfGestureRecognizer:(NSGestureRecognizer *)otherGestureRecognizer;
+- (BOOL)gestureRecognizer:(NSGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(NSGestureRecognizer *)otherGestureRecognizer;
+@end
+
+#endif

Source/GNUmakefile

@@ -97,6 +97,7 @@ NSFontManager.m \
 NSFontPanel.m \
 NSForm.m \
 NSFormCell.m \
+NSGestureRecognizer.m \
 NSGradient.m \
 NSGlyphGenerator.m \
 NSGraphicsContext.m \
@@ -326,6 +327,7 @@ NSFontManager.h \
 NSFontPanel.h \
 NSForm.h \
 NSFormCell.h \
+NSGestureRecognizer.h \
 NSGradient.h \
 NSGlyphGenerator.h \
 NSGraphicsContext.h \

Source/NSGestureRecognizer.m

@@ -0,0 +1,42 @@
+/*
+   NSGestureRecognizer.m
+  
+   Abstract base class for monitoring user events
+
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   Author: Daniel Ferreira <dtf@stanford.edu>
+   Date: 2017
+
+   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.
+*/
+
+#import <AppKit/NSGestureRecognizer.h>
+
+@implementation NSGestureRecognizer
+- (id)initWithCoder: (NSCoder *)coder
+{
+  return nil; 
+}
+
+- (void)encodeWithCoder: (NSCoder *)coder
+{
+  return;
+}
+@end