1 /* |
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2 * Copyright (c) 2006-2007 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: Cch client api |
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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 // INCLUDE FILES |
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20 #include "cchimpl.h" |
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21 #include "cchclientobserver.h" |
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22 #include "cchlogger.h" |
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23 #include "cchserviceimpl.h" |
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24 // EXTERNAL DATA STRUCTURES |
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25 // None |
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26 |
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27 // EXTERNAL FUNCTION PROTOTYPES |
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28 // None |
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29 |
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30 // CONSTANTS |
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31 // None |
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32 |
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33 // MACROS |
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34 // None |
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35 |
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36 // LOCAL CONSTANTS AND MACROS |
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37 // None |
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38 |
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39 // MODULE DATA STRUCTURES |
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40 // None |
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41 |
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42 // LOCAL FUNCTION PROTOTYPES |
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43 // None |
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44 |
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45 // FORWARD DECLARATIONS |
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46 // None |
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47 |
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48 // ============================= LOCAL FUNCTIONS ============================= |
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49 |
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50 // ============================ MEMBER FUNCTIONS ============================= |
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51 |
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52 // --------------------------------------------------------------------------- |
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53 // CCchClientObserver::CCchClientObserver |
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54 // C++ default constructor can NOT contain any code, that might leave. |
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55 // --------------------------------------------------------------------------- |
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56 // |
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57 CCchClientObserver::CCchClientObserver( CCchServiceImpl& aCchService ) |
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58 : CActive ( EPriorityStandard ) |
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59 , iCchService( aCchService ) |
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60 , iBackwardSupportObserver( NULL ) |
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61 { |
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62 CActiveScheduler::Add( this ); |
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63 } |
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64 |
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65 CCchClientObserver::~CCchClientObserver() |
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66 { |
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67 iObservers.Reset(); |
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68 |
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69 Cancel(); |
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70 } |
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71 |
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72 // --------------------------------------------------------------------------- |
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73 // CCchClientObserver::ConstructL |
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74 // Symbian 2nd phase constructor can leave. |
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75 // --------------------------------------------------------------------------- |
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76 // |
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77 void CCchClientObserver::ConstructL() |
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78 { |
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79 CCHLOGSTRING( "CCchClientObserver::ConstructL: IN" ); |
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80 |
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81 CCHLOGSTRING( "CCchClientObserver::ConstructL: OUT" ); |
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82 } |
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83 // --------------------------------------------------------------------------- |
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84 // CCchClientObserver::NewL |
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85 // Two-phased constructor. |
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86 // --------------------------------------------------------------------------- |
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87 // |
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88 CCchClientObserver* CCchClientObserver::NewL( CCchServiceImpl& aCchService ) |
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89 { |
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90 CCHLOGSTRING( "CCchClientObserver::NewL: IN" ); |
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91 CCchClientObserver* self = |
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92 CCchClientObserver::NewLC( aCchService ); |
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93 CleanupStack::Pop( self ); |
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94 CCHLOGSTRING( "CCchClientObserver::NewL: OUT" ); |
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95 return self; |
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96 } |
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97 |
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98 // --------------------------------------------------------------------------- |
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99 // CCchClientObserver::NewLC |
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100 // Two-phased constructor. |
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101 // --------------------------------------------------------------------------- |
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102 // |
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103 CCchClientObserver* CCchClientObserver::NewLC( CCchServiceImpl& aCchService ) |
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104 { |
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105 CCHLOGSTRING( "CCchClientObserver::NewLC: IN" ); |
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106 CCchClientObserver* self = |
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107 new (ELeave) CCchClientObserver( aCchService ); |
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108 CleanupStack::PushL( self ); |
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109 self->ConstructL(); |
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110 CCHLOGSTRING( "CCchClientObserver::NewLC: OUT" ); |
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111 return self; |
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112 } |
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113 |
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114 // --------------------------------------------------------------------------- |
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115 // CCchClientObserver::SetObserver |
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116 // --------------------------------------------------------------------------- |
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117 // |
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118 void CCchClientObserver::SetObserver( MCchServiceStatusObserver& aObserver ) |
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119 { |
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120 CCHLOGSTRING( "CCchClientObserver::SetObserver: IN - deprecated use AddObserver" ); |
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121 |
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122 // This is for old API user support remove this when all are using new API |
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123 if( iBackwardSupportObserver ) |
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124 { |
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125 // remove existing observer |
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126 CCHLOGSTRING( "CCchClientObserver::SetObserver: removing old observer" ); |
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127 RemoveObserver(); |
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128 } |
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129 |
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130 CCHLOGSTRING( "CCchClientObserver::SetObserver: adding new observer" ); |
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131 // This is for old API user support remove this when all are using new API |
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132 AddObserver( aObserver ); |
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133 iBackwardSupportObserver = &aObserver; |
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134 |
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135 CCHLOGSTRING( "CCchClientObserver::SetObserver: OUT" ); |
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136 } |
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137 |
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138 // --------------------------------------------------------------------------- |
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139 // CCchClientObserver::RemoveObserver |
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140 // --------------------------------------------------------------------------- |
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141 // |
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142 void CCchClientObserver::RemoveObserver( ) |
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143 { |
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144 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: IN - deprecated use the one with parameter" ); |
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145 |
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146 if( iBackwardSupportObserver ) |
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147 { |
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148 // remove using observer set in SetObserver. This is for old API user support |
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149 // remove this when all are using new API |
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150 RemoveObserver( *iBackwardSupportObserver ); |
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151 iBackwardSupportObserver = NULL; |
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152 } |
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153 |
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154 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: OUT" ); |
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155 } |
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156 |
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157 // --------------------------------------------------------------------------- |
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158 // CCchClientObserver::AddObserver |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 TInt CCchClientObserver::AddObserver( |
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162 MCchServiceStatusObserver& aObserver ) |
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163 { |
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164 CCHLOGSTRING2( "CCchClientObserver::AddObserver: IN count=%d", iObservers.Count() ); |
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165 |
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166 TInt index = iObservers.Find( &aObserver ); |
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167 |
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168 // Insert if not already observing |
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169 if ( index == KErrNotFound ) |
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170 { |
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171 CCHLOGSTRING( "CCchClientObserver::AddObserver: observer added" ); |
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172 iObservers.Append( &aObserver ); |
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173 } |
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174 else |
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175 { |
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176 CCHLOGSTRING( "CCchClientObserver::AddObserver: observer KErrAlreadyExists" ); |
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177 return KErrAlreadyExists; |
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178 } |
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179 |
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180 if ( iObservers.Count() ) |
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181 { |
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182 if ( !IsActive() ) |
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183 { |
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184 iCchService.CchImpl()->CchClient().SubscribeToEvents( |
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185 TServiceSelection( iCchService.ServiceId(), ECCHUnknown ), |
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186 iServiceStatus, |
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187 iStatus ); |
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188 |
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189 CCHLOGSTRING( "CCchClientObserver::AddObserver: setting active" ); |
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190 |
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191 SetActive(); |
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192 } |
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193 |
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194 CCHLOGSTRING( "CCchClientObserver::AddObserver: subscrbing to events" ); |
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195 |
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196 } |
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197 else |
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198 { |
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199 CCHLOGSTRING( "CCchClientObserver::AddObserver: already subscribed subscrbing to events - skipping" ); |
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200 } |
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201 |
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202 CCHLOGSTRING2( "CCchClientObserver::AddObserver: OUT count=%d", iObservers.Count() ); |
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203 return KErrNone; |
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204 } |
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205 |
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206 // --------------------------------------------------------------------------- |
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207 // CCchClientObserver::RemoveObserver |
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208 // --------------------------------------------------------------------------- |
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209 // |
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210 TInt CCchClientObserver::RemoveObserver( |
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211 MCchServiceStatusObserver& aObserver ) |
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212 { |
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213 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: IN" ); |
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214 CCHLOGSTRING2( "CCchClientObserver::RemoveObserver IN: COUNT=%d", iObservers.Count() ); |
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215 |
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216 TInt index = iObservers.Find( &aObserver ); |
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217 |
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218 if ( index == KErrNotFound ) |
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219 { |
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220 CCHLOGSTRING("CCchClientObserver::RemoveObserver - observer NOT found KErnotFound returned" ); |
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221 return KErrNotFound; |
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222 } |
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223 else |
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224 { |
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225 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: removing observer" ); |
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226 |
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227 // Observer found. |
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228 iObservers.Remove( index ); |
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229 iObservers.Compress(); |
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230 |
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231 // Cancel subcribe to events and free up memory. |
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232 if ( !iObservers.Count() ) |
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233 { |
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234 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: unsubscrbing from events" ); |
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235 iCchService.CchImpl()->CchClient().SubscribeToEventsCancel( ); |
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236 iObservers.Reset(); |
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237 } |
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238 } |
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239 |
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240 CCHLOGSTRING2( "CCchClientObserver::RemoveObserver OUT: COUNT=%d", iObservers.Count() ); |
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241 |
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242 CCHLOGSTRING( "CCchClientObserver::RemoveObserver: OUT" ); |
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243 return KErrNone; |
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244 } |
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245 |
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246 // --------------------------------------------------------------------------- |
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247 // CCchClientObserver::DoCancel |
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248 // --------------------------------------------------------------------------- |
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249 // |
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250 void CCchClientObserver::DoCancel() |
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251 { |
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252 CCHLOGSTRING( "CCchClientObserver::DoCancel: IN" ); |
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253 |
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254 CCHLOGSTRING( "CCchClientObserver::DoCancel: OUT" ); |
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255 } |
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256 |
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257 // --------------------------------------------------------------------------- |
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258 // CCchClientObserver::RunL |
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259 // --------------------------------------------------------------------------- |
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260 // |
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261 void CCchClientObserver::RunL() |
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262 { |
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263 TServiceStatus serviceStatus = iServiceStatus(); |
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264 CCHLOGSTRING( "CCchClientObserver::RunL: IN" ); |
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265 |
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266 //if someone is observing and correct service is changed |
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267 if ( iObservers.Count() && ( serviceStatus.ServiceId() == iCchService.ServiceId() ) ) |
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268 { |
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269 TCchServiceStatus status; |
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270 |
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271 status.SetError( serviceStatus.iError ); |
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272 status.SetState( serviceStatus.iState ); |
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273 |
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274 CCHLOGSTRING2( "CCchClientObserver::RunL: count=%d", iObservers.Count() ); |
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275 |
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276 // If observer array can change while iterating it add support for that. |
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277 // Then there is a need to iterate starting from beginning until done and save |
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278 // already notified observers etc |
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279 TInt count( iObservers.Count() ); |
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280 |
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281 for( TInt i=0; i < count; i++ ) |
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282 { |
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283 CCHLOGSTRING2( "CCchClientObserver::RunL: looping observers: %d", i ); |
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284 |
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285 // If some client removes observer in middle of iteration start from beginning of array again. |
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286 if ( count > iObservers.Count() ) |
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287 { |
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288 CCHLOGSTRING( "CCchClientObserver::RunL: Start from beginning of array" ); |
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289 |
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290 i = 0; |
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291 count = iObservers.Count(); |
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292 } |
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293 |
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294 if( iObservers[ i ] ) |
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295 { |
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296 CCHLOGSTRING2( "CCchClientObserver::RunL: send service status changed to client: %d", i ); |
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297 iObservers[ i ]->ServiceStatusChanged( iCchService.ServiceId(), |
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298 serviceStatus.Type(), status ); |
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299 } |
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300 } |
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301 } |
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302 |
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303 if ( iObservers.Count() ) |
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304 { |
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305 if ( !IsActive() ) |
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306 { |
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307 CCHLOGSTRING( "CCchClientObserver::RunL: Subscribing " ); |
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308 iCchService.CchImpl()->CchClient().SubscribeToEvents( |
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309 TServiceSelection( iCchService.ServiceId(), ECCHUnknown ), |
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310 iServiceStatus, |
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311 iStatus ); |
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312 |
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313 CCHLOGSTRING( "CCchClientObserver::RunL: Setting active" ); |
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314 SetActive(); |
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315 } |
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316 } |
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317 |
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318 |
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319 CCHLOGSTRING( "CCchClientObserver::RunL: OUT" ); |
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320 } |
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321 |
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322 // --------------------------------------------------------------------------- |
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323 // CCchClientObserver::RunError |
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324 // --------------------------------------------------------------------------- |
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325 // |
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326 TInt CCchClientObserver::RunError( TInt /*aError*/ ) |
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327 { |
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328 CCHLOGSTRING( "CCchClientObserver::RunError: IN OUT" ); |
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329 return KErrNone; |
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330 } |
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331 |
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332 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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333 |
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334 // End of File |
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