base_view.h revision 5821806d5e7f356e8fa4b058a389a808ea183019 
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/memory/scoped_nsobject.h"
11#include "ui/gfx/rect.h"
12
13// A view that provides common functionality that many views will need:
14// - Automatic registration for mouse-moved events.
15// - Funneling of mouse and key events to two methods
16// - Coordinate conversion utilities
17
18@interface BaseView : NSView {
19 @private
20  NSTrackingArea *trackingArea_;
21  BOOL dragging_;
22  scoped_nsobject<NSEvent> pendingExitEvent_;
23}
24
25- (id)initWithFrame:(NSRect)frame;
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|.
41UI_EXPORT extern NSString* kViewDidBecomeFirstResponder;
42UI_EXPORT extern NSString* kSelectionDirection;
43
44#endif  // UI_BASE_COCOA_BASE_VIEW_H_
45