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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_BASE_COCOA_BASE_VIEW_H_
      6 #define UI_BASE_COCOA_BASE_VIEW_H_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 
     10 #include "base/mac/scoped_nsobject.h"
     11 #import "ui/base/cocoa/tracking_area.h"
     12 #include "ui/base/ui_export.h"
     13 #include "ui/gfx/rect.h"
     14 
     15 // A view that provides common functionality that many views will need:
     16 // - Automatic registration for mouse-moved events.
     17 // - Funneling of mouse and key events to two methods
     18 // - Coordinate conversion utilities
     19 UI_EXPORT
     20 @interface BaseView : NSView {
     21  @private
     22   ui::ScopedCrTrackingArea trackingArea_;
     23   BOOL dragging_;
     24   base::scoped_nsobject<NSEvent> pendingExitEvent_;
     25 }
     26 
     27 // Override these methods in a subclass.
     28 - (void)mouseEvent:(NSEvent *)theEvent;
     29 - (void)keyEvent:(NSEvent *)theEvent;
     30 
     31 // Useful rect conversions (doing coordinate flipping)
     32 - (gfx::Rect)flipNSRectToRect:(NSRect)rect;
     33 - (NSRect)flipRectToNSRect:(gfx::Rect)rect;
     34 
     35 @end
     36 
     37 // A notification that a view may issue when it receives first responder status.
     38 // The name is |kViewDidBecomeFirstResponder|, the object is the view, and the
     39 // NSSelectionDirection is wrapped in an NSNumber under the key
     40 // |kSelectionDirection|.
     41 UI_EXPORT extern NSString* kViewDidBecomeFirstResponder;
     42 UI_EXPORT extern NSString* kSelectionDirection;
     43 
     44 #endif  // UI_BASE_COCOA_BASE_VIEW_H_
     45