NSView+FirstResponder.m

   1 #import "NSView+FirstResponder.h"
   2
   3 @implementation NSView (FirstResponder)
   4
   5 - (BOOL)resignIfFirstResponder {
   6     NSWindow *window = self.window;
   7     return window.firstResponder == self
   8         ? [window makeFirstResponder:nil]
   9         : NO;
  10 }
  11
  12 @end