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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Watches USB states |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef CUSBSTATEWATCHER_H |
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20 #define CUSBSTATEWATCHER_H |
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21 |
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22 #include <e32std.h> |
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23 #include <d32usbc.h> |
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24 |
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25 #include "cusbdevcon.h" |
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26 |
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27 /** |
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28 * Usb State watcher |
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29 * Reports Usb state changes to CUsbDevCon |
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30 * |
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31 * @lib usbdevcon.lib |
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32 * @since S60 v.5.0 |
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33 */ |
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34 |
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35 class CUsbStateWatcher : public CActive |
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36 { |
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37 |
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38 public: |
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39 |
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40 /** |
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41 * Two-phased constructor. |
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42 * |
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43 * @since S60 v.5.0 |
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44 * @param aObserver Gets notifications when USB state changed |
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45 * @param aLdd Link to LDD services |
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46 * @return Constructed instance |
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47 */ |
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48 static CUsbStateWatcher* NewL(CUsbDevCon& aObserver, RDevUsbcClient& aLdd); |
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49 |
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50 /** |
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51 * Destructor. |
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52 * |
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53 * @since S60 v.5.0 |
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54 */ |
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55 virtual ~CUsbStateWatcher(); |
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56 |
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57 /** |
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58 * Activates USB states watching |
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59 * |
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60 * @since S60 v.5.0 |
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61 */ |
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62 void Activate(); |
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63 |
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64 private: |
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65 |
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66 /** |
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67 * Default construction |
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68 * |
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69 * @since S60 v.5.0 |
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70 * @param aObserver Gets notifications when USB state changed |
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71 * @param aLdd Link to LDD services |
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72 */ |
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73 CUsbStateWatcher(CUsbDevCon& aObserver, RDevUsbcClient& aLdd); |
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74 |
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75 /** |
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76 * Two-phased constructor. |
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77 * |
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78 * @since S60 v.5.0 |
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79 */ |
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80 void ConstructL(); |
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81 |
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82 // from CActive |
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83 |
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84 /** |
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85 * From CActive. |
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86 * |
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87 */ |
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88 void RunL(); |
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89 |
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90 /** |
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91 * From CActive. |
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92 * |
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93 */ |
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94 void DoCancel(); |
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95 |
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96 /** |
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97 * From CActive. |
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98 * |
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99 */ |
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100 TInt RunError( TInt /*aError*/ ); |
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101 |
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102 private: // data |
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103 |
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104 /** |
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105 * Device state |
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106 */ |
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107 TUint iState; |
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108 |
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109 /** |
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110 * Observer |
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111 * Not own. |
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112 */ |
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113 CUsbDevCon& iObserver; |
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114 |
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115 /** |
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116 * LDD |
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117 * Not own. |
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118 */ |
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119 RDevUsbcClient& iLdd; |
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120 |
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121 }; |
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122 |
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123 #endif // CUSBSTATEWATCHER_H |