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1 /* |
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2 * Copyright (c) 2008-2009 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: This implements CPropertyWatcher class. |
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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 // SYSTEM INCLUDE |
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20 #include <e32base.h> |
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21 #include <e32std.h> // For DLL. |
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22 |
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23 // USER INCLUDE |
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24 #include "propertywatcher.h" |
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25 #include "harvesterlog.h" // For debugging. |
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26 #include "listener.h" |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // --------------------------------------------------------------------------- |
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31 // CPropertyWatcher::GetInstanceL |
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32 // --------------------------------------------------------------------------- |
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33 // |
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34 EXPORT_C CPropertyWatcher* CPropertyWatcher::GetInstanceL() |
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35 { |
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36 WRITELOG( "CPropertyWatcher::GetInstanceL() - begin" ); |
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37 |
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38 CPropertyWatcher* me = NULL; |
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39 me = static_cast<CPropertyWatcher*>( Dll::Tls() ); |
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40 if ( !me ) |
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41 { |
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42 CPropertyWatcher* self = new( ELeave ) CPropertyWatcher(); |
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43 User::LeaveIfError( Dll::SetTls( self ) ); |
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44 |
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45 WRITELOG( "CPropertyWatcher::GetInstanceL() - end returning self" ); |
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46 return self; |
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47 } |
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48 else |
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49 { |
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50 WRITELOG( "CPropertyWatcher::GetInstanceL() - end returning me" ); |
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51 return me; |
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52 } |
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53 } |
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54 |
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55 // --------------------------------------------------------------------------- |
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56 // CPropertyWatcher::Delete |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 EXPORT_C void CPropertyWatcher::Delete() |
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60 { |
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61 WRITELOG( "CPropertyWatcher::Delete() - begin" ); |
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62 |
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63 CPropertyWatcher *me = NULL; |
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64 me = static_cast<CPropertyWatcher*>( Dll::Tls() ); |
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65 |
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66 if ( me ) |
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67 { |
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68 delete me; |
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69 Dll::SetTls( NULL ); // Free TLS. |
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70 } |
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71 |
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72 WRITELOG( "CPropertyWatcher::Delete() - end" ); |
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73 } |
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74 |
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75 // --------------------------------------------------------------------------- |
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76 // CPropertyWatcher::ListenKeyChangesL |
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77 // --------------------------------------------------------------------------- |
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78 // |
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79 EXPORT_C void CPropertyWatcher::ListenKeyChangesL( |
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80 const TUid aPropertyCategory, |
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81 const TUint aKey, |
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82 const MKeyObserver* aValueObserver ) |
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83 { |
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84 WRITELOG( "CPropertyWatcher::ListenKeyChanges() - begin" ); |
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85 |
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86 const TInt listenerIndex = FindListener ( aPropertyCategory, aKey ); // Finds listener. |
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87 if ( listenerIndex >= 0 ) |
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88 { |
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89 iListenersArray[listenerIndex]->RegisterNewClientForKeyValueL( aValueObserver ); |
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90 return; |
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91 } |
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92 |
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93 // Create new listener. |
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94 CListener* listener = CListener::NewLC( |
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95 aPropertyCategory, |
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96 aKey |
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97 ); |
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98 |
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99 listener->RegisterNewClientForKeyValueL( aValueObserver ); |
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100 |
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101 // Add creted listener to array. |
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102 User::LeaveIfError( iListenersArray.Append( listener ) ); // Transfer ownership. |
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103 |
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104 CleanupStack::Pop( listener ); |
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105 |
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106 WRITELOG( "CPropertyWatcher::ListenKeyChanges() - end" ); |
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107 } |
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108 |
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109 // --------------------------------------------------------------------------- |
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110 // CPropertyWatcher::ListenKeyAndStatusChanges |
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111 // --------------------------------------------------------------------------- |
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112 // |
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113 EXPORT_C void CPropertyWatcher::ListenKeyAndStatusChangesL( |
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114 const TUid aPropertyCategory, |
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115 const TUint aKey, |
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116 const MKeyAndStatusObserver* aStatusObserver ) |
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117 { |
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118 WRITELOG( "CPropertyWatcher::ListenKeyAndStatusChanges - begin" ); |
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119 |
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120 const TInt listenerIndex = FindListener ( aPropertyCategory, aKey ); // Finds listener. |
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121 if ( listenerIndex >= 0 ) |
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122 { |
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123 iListenersArray[listenerIndex]->RegisterNewClientForKeyAndStatusL( aStatusObserver ); |
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124 return; |
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125 } |
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126 |
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127 // Create new listener. |
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128 CListener* listener = CListener::NewLC( |
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129 aPropertyCategory, |
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130 aKey |
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131 ); |
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132 |
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133 listener->RegisterNewClientForKeyAndStatusL( aStatusObserver ); |
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134 |
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135 // Add created listener to array. |
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136 User::LeaveIfError( iListenersArray.Append( listener ) ); // Transfer ownership. |
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137 |
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138 CleanupStack::Pop( listener ); |
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139 |
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140 WRITELOG( "CPropertyWatcher::ListenKeyChanges() - end" ); |
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141 } |
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142 |
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143 // --------------------------------------------------------------------------- |
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144 // CPropertyWatcher::StopListeningKeyChanges |
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145 // --------------------------------------------------------------------------- |
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146 // |
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147 EXPORT_C void CPropertyWatcher::StopListeningKeyChanges( |
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148 const TUid aPropertyCategory, |
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149 const TUint aKey, |
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150 const MKeyObserver* aKeyObserver ) |
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151 { |
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152 WRITELOG( "CPropertyWatcher::StopListeningKeyChangesL() - begin" ); |
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153 |
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154 const TInt listenerIndex = FindListener ( aPropertyCategory, aKey ); // Finds listener. |
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155 if ( listenerIndex >= 0 ) |
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156 { |
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157 iListenersArray[listenerIndex]->UnregisterKeyClient( aKeyObserver ); |
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158 } |
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159 |
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160 WRITELOG( "CPropertyWatcher::StopListeningKeyChangesL() - end" ); |
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161 } |
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162 |
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163 // --------------------------------------------------------------------------- |
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164 // CPropertyWatcher::StopListeningKeyAndStatusChanges |
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165 // --------------------------------------------------------------------------- |
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166 // |
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167 EXPORT_C void CPropertyWatcher::StopListeningKeyAndStatusChanges( |
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168 const TUid aPropertyCategory, |
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169 const TUint aKey, |
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170 MKeyAndStatusObserver* aStatusObserver ) |
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171 { |
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172 WRITELOG( "CPropertyWatcher::StopListeningKeyAndStatusChanges() - begin" ); |
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173 |
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174 const TInt listenerIndex = FindListener ( aPropertyCategory, aKey ); // Finds listener. |
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175 if ( listenerIndex >= 0 ) |
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176 { |
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177 iListenersArray[listenerIndex]->UnregisterKeyAndStatusClient( aStatusObserver ); |
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178 } |
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179 |
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180 WRITELOG( "CPropertyWatcher::StopListeningKeyAndStatusChanges() - end" ); |
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181 } |
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182 |
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183 // --------------------------------------------------------------------------- |
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184 // CPropertyWatcher::~CPropertyWatcher |
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185 // --------------------------------------------------------------------------- |
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186 // |
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187 CPropertyWatcher::~CPropertyWatcher() |
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188 { |
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189 WRITELOG( "CPropertyWatcher::~CPropertyWatcher() - begin" ); |
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190 |
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191 iListenersArray.ResetAndDestroy(); // Clean array and objects. |
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192 |
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193 WRITELOG( "CPropertyWatcher::~CPropertyWatcher() - end" ); |
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194 } |
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195 |
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196 // --------------------------------------------------------------------------- |
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197 // CPropertyWatcher::FindListener |
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198 // --------------------------------------------------------------------------- |
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199 // |
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200 TInt CPropertyWatcher::FindListener( const TUid aPropertyCategory, const TUint aKey ) const |
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201 { |
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202 WRITELOG( "CPropertyWatcher::FindListener() - begin" ); |
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203 |
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204 TInt listenerIndex ( KErrNotFound ); |
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205 |
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206 for ( TInt i = iListenersArray.Count(); --i >= 0; ) |
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207 { |
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208 CListener& listenerItem = *iListenersArray[i]; |
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209 |
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210 if ( aKey == listenerItem.ObservedKey() && |
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211 aPropertyCategory == listenerItem.ObservedCategory() ) |
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212 { |
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213 listenerIndex = i; |
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214 } |
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215 } |
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216 |
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217 WRITELOG( "CPropertyWatcher::FindListener() - end" ); |
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218 return listenerIndex; |
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219 } |
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220 |
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221 // End of file. |