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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: Class for monitoring P&S property changes. |
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15 * Part of: Tactile Feedback. |
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16 * |
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17 */ |
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18 |
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19 #include <e32std.h> |
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20 #include <e32cmn.h> |
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21 |
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22 #include "tactilepropertywatcher.h" |
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23 |
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24 // --------------------------------------------------------------------------- |
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25 // Constructor. |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 CTactilePropertyWatcher::CTactilePropertyWatcher( |
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29 MTactilePropertyObserver& aObserver, |
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30 const TUid aCategory, |
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31 const TInt aKey, |
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32 CActive::TPriority aPriority ) : |
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33 CActive( aPriority ), |
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34 iObserver( aObserver ), |
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35 iCategory( aCategory ), |
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36 iKey( aKey ) |
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37 |
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38 { |
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39 CActiveScheduler::Add( this ); |
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40 } |
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41 |
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42 // --------------------------------------------------------------------------- |
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43 // 2nd phase constructor. |
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44 // --------------------------------------------------------------------------- |
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45 // |
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46 void CTactilePropertyWatcher::ConstructL() |
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47 { |
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48 User::LeaveIfError( iProperty.Attach( iCategory, iKey ) ); |
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49 |
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50 Subscribe(); |
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51 } |
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52 |
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53 // --------------------------------------------------------------------------- |
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54 // 2-phased constructor. |
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55 // --------------------------------------------------------------------------- |
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56 // |
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57 CTactilePropertyWatcher* CTactilePropertyWatcher::NewL( |
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58 MTactilePropertyObserver& aObserver, |
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59 const TUid aCategory, |
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60 const TInt aKey, |
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61 CActive::TPriority aPriority ) |
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62 { |
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63 CTactilePropertyWatcher* self = new (ELeave) |
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64 CTactilePropertyWatcher( aObserver, aCategory, aKey, aPriority ); |
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65 CleanupStack::PushL( self ); |
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66 self->ConstructL(); |
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67 CleanupStack::Pop( self ); |
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68 return self; |
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69 } |
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70 |
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71 // --------------------------------------------------------------------------- |
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72 // Destructor. |
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73 // --------------------------------------------------------------------------- |
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74 // |
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75 CTactilePropertyWatcher::~CTactilePropertyWatcher() |
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76 { |
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77 Cancel(); |
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78 iProperty.Close(); |
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79 } |
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80 |
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81 // --------------------------------------------------------------------------- |
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82 // Retrieves an integer value associated with this property. |
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83 // --------------------------------------------------------------------------- |
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84 // |
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85 void CTactilePropertyWatcher::GetL( TInt& aValue ) |
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86 { |
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87 User::LeaveIfError( iProperty.Get( aValue ) ); |
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88 } |
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89 |
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90 |
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91 // --------------------------------------------------------------------------- |
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92 // Retrieves a buffer associated with this property. |
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93 // --------------------------------------------------------------------------- |
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94 // |
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95 void CTactilePropertyWatcher::GetL( TDes8& aValue ) |
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96 { |
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97 User::LeaveIfError( iProperty.Get( aValue ) ); |
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98 } |
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99 |
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100 // --------------------------------------------------------------------------- |
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101 // Retrieves an integer value associated with this property. |
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102 // --------------------------------------------------------------------------- |
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103 // |
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104 TInt CTactilePropertyWatcher::Get( TInt& aValue ) |
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105 { |
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106 return iProperty.Get( aValue ); |
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107 } |
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108 |
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109 // --------------------------------------------------------------------------- |
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110 // Retrieves a buffer associated with this property. |
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111 // --------------------------------------------------------------------------- |
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112 // |
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113 TInt CTactilePropertyWatcher::Get( TDes8& aValue ) |
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114 { |
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115 return iProperty.Get( aValue ); |
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116 } |
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117 |
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118 // --------------------------------------------------------------------------- |
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119 // Sets a P&S property to an integer value. The attached version of |
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120 // RProperty::Set is used which is faster than using RProperty::Set |
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121 // directly without attach. |
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122 // --------------------------------------------------------------------------- |
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123 // |
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124 void CTactilePropertyWatcher::SetL( const TInt aValue ) |
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125 { |
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126 User::LeaveIfError( iProperty.Set( aValue ) ); |
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127 } |
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128 |
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129 // --------------------------------------------------------------------------- |
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130 // Sets a P&S property to a (large)bytearray value. The attached version of |
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131 // RProperty::Set is used which is faster than using RProperty::Set |
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132 // directly without attach. |
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133 // --------------------------------------------------------------------------- |
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134 // |
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135 void CTactilePropertyWatcher::SetL( const TDesC8& aValue ) |
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136 { |
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137 User::LeaveIfError( iProperty.Set( aValue ) ); |
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138 } |
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139 |
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140 // --------------------------------------------------------------------------- |
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141 // |
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142 // --------------------------------------------------------------------------- |
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143 // |
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144 void CTactilePropertyWatcher::Subscribe() |
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145 { |
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146 if ( !IsActive() ) |
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147 { |
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148 iProperty.Subscribe( iStatus ); |
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149 |
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150 SetActive(); |
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151 } |
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152 } |
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153 |
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154 // --------------------------------------------------------------------------- |
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155 // From class CActive |
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156 // --------------------------------------------------------------------------- |
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157 // |
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158 void CTactilePropertyWatcher::DoCancel() |
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159 { |
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160 iProperty.Cancel(); |
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161 } |
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162 |
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163 // --------------------------------------------------------------------------- |
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164 // From class CActive |
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165 // --------------------------------------------------------------------------- |
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166 // |
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167 void CTactilePropertyWatcher::RunL() |
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168 { |
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169 if ( iStatus.Int() == KErrNone ) |
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170 { |
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171 // Subscribe first, then notify the observer that a property |
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172 // has changed. |
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173 Subscribe(); |
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174 iObserver.PropertyChangedL( iCategory, iKey ); |
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175 } |
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176 else if ( iStatus.Int() == KErrNotFound ) |
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177 { |
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178 // We get here if a property gets deleted. We still need to subscribe |
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179 // to it because it might get redefined later. |
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180 Subscribe(); |
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181 } |
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182 } |
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183 |
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184 // End of File |