text: //  Derived from Blacktree codebase
  //  2009-11-30 Makoto Yamashita
  
  #import <Cocoa/Cocoa.h>
  
  @interface NSWindow (Fade)
  -(void)setSticky:(BOOL)flag;
  -(void)setAlphaValue:(float)fadeOut fadeTime:(float)seconds;
  - (void)setFrame:(NSRect)frameRect alphaValue:(float)alpha display:(BOOL)displayFlag animate:(BOOL)animationFlag;
  -(void)reallyCenter;
  +(NSWindow *)windowWithImage:(NSImage *)image;
  - (id)windowPropertyForKey:(NSString *)key;
  @end
  
  @interface NSWindow (Physics)
  -(void)animateVelocity:(float)velocity inDirection:(float)angle withFriction:(float)friction startTime:(NSTimeInterval)startTime;
  @end
  
  
  @interface NSWindow (Widgets)
  - (void) addInternalWidgets;
  - (void) addInternalWidgetsForStyleMask:(int)styleMask;
  - (void) addInternalWidgetsForStyleMask:(int)styleMask closeOnly:(BOOL)closeOnly;
  @end
  
  