|
1 #ifndef __USB_DEVICE_WATCHER_H__ |
|
2 #define __USB_DEVICE_WATCHER_H__ |
|
3 |
|
4 /* |
|
5 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
6 * All rights reserved. |
|
7 * This component and the accompanying materials are made available |
|
8 * under the terms of the License "Eclipse Public License v1.0" |
|
9 * which accompanies this distribution, and is available |
|
10 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
11 * |
|
12 * Initial Contributors: |
|
13 * Nokia Corporation - initial contribution. |
|
14 * |
|
15 * Contributors: |
|
16 * |
|
17 * Description: |
|
18 * |
|
19 * |
|
20 */ |
|
21 |
|
22 /** |
|
23 @file UsbDeviceWatcher.h |
|
24 */ |
|
25 |
|
26 #include <e32base.h> |
|
27 |
|
28 // Forward declarations |
|
29 |
|
30 class RUsbHubDriver; |
|
31 |
|
32 namespace NUnitTesting_USBDI |
|
33 { |
|
34 |
|
35 // Forward declarations |
|
36 |
|
37 class CUsbHostDevice; |
|
38 |
|
39 /** |
|
40 */ |
|
41 class MUsbDeviceObserver |
|
42 { |
|
43 public: |
|
44 /** |
|
45 Called when a USB device has been connected to the host |
|
46 @param aError an error code relating to USB device attachment from the Hub driver |
|
47 */ |
|
48 virtual void UsbDeviceAttachedL(TInt aError) = 0; |
|
49 }; |
|
50 |
|
51 /** |
|
52 This class represents a watcher for USB devices inserted into the host |
|
53 */ |
|
54 class CUsbDeviceWatcher : public CActive |
|
55 { |
|
56 public: |
|
57 /** |
|
58 Symbian factory construction |
|
59 @return a pointer to an instance of a Usb device watcher |
|
60 */ |
|
61 static CUsbDeviceWatcher* NewL(RUsbHubDriver& aUsbHubDriver,MUsbDeviceObserver& aUsbDeviceObserver); |
|
62 |
|
63 /** |
|
64 Destructor |
|
65 */ |
|
66 ~CUsbDeviceWatcher(); |
|
67 |
|
68 /** |
|
69 */ |
|
70 void StartWatchingL(CUsbHostDevice* aUsbDevice); |
|
71 |
|
72 private: |
|
73 /** |
|
74 Cancel watching for new USB devices |
|
75 */ |
|
76 void DoCancel(); |
|
77 |
|
78 /** |
|
79 |
|
80 */ |
|
81 void RunL(); |
|
82 |
|
83 /** |
|
84 @return KErrNone |
|
85 */ |
|
86 TInt RunError(TInt aError); |
|
87 |
|
88 private: |
|
89 /** |
|
90 Constructor |
|
91 @param aUsbHubDriver the Host USB Hub driver |
|
92 */ |
|
93 CUsbDeviceWatcher(RUsbHubDriver& aUsbHubDriver,MUsbDeviceObserver& aUsbDeviceObserver); |
|
94 |
|
95 /** |
|
96 2nd phase constructor |
|
97 */ |
|
98 void ConstructL(); |
|
99 |
|
100 private: |
|
101 /** |
|
102 The Usb hub driver (uses-a) |
|
103 */ |
|
104 RUsbHubDriver& iUsbHubDriver; |
|
105 |
|
106 /** |
|
107 The usb device resource (uses-a) |
|
108 */ |
|
109 CUsbHostDevice* iUsbHostDevice; |
|
110 |
|
111 /** |
|
112 The observer for USB device connection |
|
113 */ |
|
114 MUsbDeviceObserver& iUsbDeviceObserver; |
|
115 }; |
|
116 |
|
117 |
|
118 } |
|
119 |
|
120 |
|
121 #endif |