base_view.h revision 21d179b334e59e9a3bfcaed4c4430bef1bc5759d 
1// Copyright (c) 2009 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 CHROME_BROWSER_UI_COCOA_BASE_VIEW_H_
6#define CHROME_BROWSER_UI_COCOA_BASE_VIEW_H_
7#pragma once
8
9#import <Cocoa/Cocoa.h>
10
11#include "base/scoped_nsobject.h"
12#include "gfx/rect.h"
13
14// A view that provides common functionality that many views will need:
15// - Automatic registration for mouse-moved events.
16// - Funneling of mouse and key events to two methods
17// - Coordinate conversion utilities
18
19@interface BaseView : NSView {
20 @private
21  NSTrackingArea *trackingArea_;
22  BOOL dragging_;
23  scoped_nsobject<NSEvent> pendingExitEvent_;
24}
25
26- (id)initWithFrame:(NSRect)frame;
27
28// Override these methods in a subclass.
29- (void)mouseEvent:(NSEvent *)theEvent;
30- (void)keyEvent:(NSEvent *)theEvent;
31
32// Useful rect conversions (doing coordinate flipping)
33- (gfx::Rect)flipNSRectToRect:(NSRect)rect;
34- (NSRect)flipRectToNSRect:(gfx::Rect)rect;
35
36@end
37
38// A notification that a view may issue when it receives first responder status.
39// The name is |kViewDidBecomeFirstResponder|, the object is the view, and the
40// NSSelectionDirection is wrapped in an NSNumber under the key
41// |kSelectionDirection|.
42extern NSString* kViewDidBecomeFirstResponder;
43extern NSString* kSelectionDirection;
44
45#endif  // CHROME_BROWSER_UI_COCOA_BASE_VIEW_H_
46