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1 /* |
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2 * Copyright (c) 2002-2006 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: CCFContextSubscriptionImpl class implementation. |
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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 <s32strm.h> |
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20 #include <s32mem.h> |
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21 #include <cfcontextdataobject.h> |
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22 |
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23 #include "CFContextSubscriptionImpl.h" |
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24 #include "CFContextQueryImpl.h" |
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25 #include "cfcontextsubscriptionlistener.h" |
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26 #include "CFContextIndicationImpl.h" |
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27 #include "cfcontextobject.h" |
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28 #include "cftrace.h" |
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29 #include "CFContextDataProxy.h" |
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30 |
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31 // CONSTANTS |
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32 |
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33 #ifdef _DEBUG |
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34 // Panic category |
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35 _LIT( KPanicCat, "CONTEXTSUBS" ); |
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36 |
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37 // Panic reasons |
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38 enum TPanicReason |
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39 { |
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40 ENoListenerSet |
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41 }; |
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42 |
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43 // Local panic function |
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44 LOCAL_C void Panic( TInt aCode ) |
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45 { |
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46 User::Panic( KPanicCat, aCode ); |
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47 } |
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48 |
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49 #endif |
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50 |
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51 // MEMBER FUNCTIONS |
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52 |
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53 EXPORT_C CCFContextSubscriptionImpl* CCFContextSubscriptionImpl::NewL() |
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54 { |
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55 FUNC_LOG; |
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56 |
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57 CCFContextSubscriptionImpl* self = CCFContextSubscriptionImpl::NewLC(); |
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58 CleanupStack::Pop( self ); |
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59 |
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60 return self; |
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61 } |
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62 |
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63 EXPORT_C CCFContextSubscriptionImpl* CCFContextSubscriptionImpl::NewLC() |
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64 { |
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65 FUNC_LOG; |
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66 |
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67 CCFContextSubscriptionImpl* self = new( ELeave ) CCFContextSubscriptionImpl; |
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68 CleanupStack::PushL( self ); |
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69 self->ConstructL(); |
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70 |
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71 return self; |
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72 } |
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73 |
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74 EXPORT_C CCFContextSubscriptionImpl* CCFContextSubscriptionImpl::NewL( |
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75 RReadStream& aStream) |
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76 { |
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77 FUNC_LOG; |
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78 |
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79 CCFContextSubscriptionImpl* self = |
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80 CCFContextSubscriptionImpl::NewLC( aStream ); |
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81 CleanupStack::Pop( self ); |
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82 |
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83 return self; |
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84 } |
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85 |
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86 EXPORT_C CCFContextSubscriptionImpl* CCFContextSubscriptionImpl::NewLC( |
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87 RReadStream& aStream ) |
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88 { |
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89 FUNC_LOG; |
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90 |
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91 CCFContextSubscriptionImpl* self = new( ELeave ) CCFContextSubscriptionImpl; |
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92 CleanupStack::PushL( self ); |
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93 self->ConstructL( aStream ); |
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94 |
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95 return self; |
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96 } |
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97 |
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98 CCFContextSubscriptionImpl::~CCFContextSubscriptionImpl() |
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99 { |
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100 FUNC_LOG; |
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101 |
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102 delete iContextQuery; |
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103 } |
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104 |
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105 CCFContextSubscriptionImpl::CCFContextSubscriptionImpl() |
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106 { |
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107 FUNC_LOG; |
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108 } |
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109 |
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110 void CCFContextSubscriptionImpl::ConstructL() |
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111 { |
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112 FUNC_LOG; |
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113 |
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114 iContextQuery = CCFContextQueryImpl::NewL( KNullDesC, KNullDesC ); |
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115 } |
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116 |
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117 void CCFContextSubscriptionImpl::ConstructL( RReadStream& aStream ) |
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118 { |
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119 FUNC_LOG; |
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120 |
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121 ConstructL(); |
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122 InternalizeL( aStream ); |
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123 } |
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124 |
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125 // METHODS |
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126 |
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127 //----------------------------------------------------------------------------- |
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128 // CCFContextSubscriptionImpl::SetContextTypeL |
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129 //----------------------------------------------------------------------------- |
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130 // |
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131 void CCFContextSubscriptionImpl::SetContextTypeL( |
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132 const TDesC& aContextType ) |
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133 { |
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134 FUNC_LOG; |
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135 |
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136 iContextQuery->SetTypeL( aContextType ); |
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137 } |
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138 |
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139 //----------------------------------------------------------------------------- |
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140 // CCFContextSubscriptionImpl::ContextType |
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141 //----------------------------------------------------------------------------- |
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142 // |
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143 const TDesC& CCFContextSubscriptionImpl::ContextType() const |
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144 { |
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145 FUNC_LOG; |
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146 |
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147 return iContextQuery->Type(); |
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148 } |
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149 |
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150 //----------------------------------------------------------------------------- |
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151 // CCFContextSubscriptionImpl::SetContextSourceL |
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152 //----------------------------------------------------------------------------- |
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153 // |
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154 void CCFContextSubscriptionImpl::SetContextSourceL( |
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155 const TDesC& aContextSource ) |
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156 { |
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157 FUNC_LOG; |
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158 |
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159 iContextQuery->SetSourceL( aContextSource ); |
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160 } |
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161 |
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162 //----------------------------------------------------------------------------- |
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163 // CCFContextSubscriptionImpl::ContextSource |
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164 //----------------------------------------------------------------------------- |
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165 // |
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166 const TDesC& CCFContextSubscriptionImpl::ContextSource() const |
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167 { |
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168 FUNC_LOG; |
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169 |
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170 return iContextQuery->Source(); |
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171 } |
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172 |
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173 //----------------------------------------------------------------------------- |
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174 // CCFContextSubscriptionImpl::SubTypeMatch |
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175 //----------------------------------------------------------------------------- |
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176 // |
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177 TBool CCFContextSubscriptionImpl::SubTypeMatch() const |
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178 { |
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179 FUNC_LOG; |
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180 |
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181 return iContextQuery->SubTypeMatch(); |
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182 } |
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183 |
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184 //----------------------------------------------------------------------------- |
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185 // CCFContextSubscriptionImpl::SetSubTypeMatch |
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186 //----------------------------------------------------------------------------- |
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187 // |
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188 void CCFContextSubscriptionImpl::SetSubTypeMatch( |
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189 TBool aMatchSubTypes ) |
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190 { |
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191 FUNC_LOG; |
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192 |
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193 iContextQuery->SetSubTypeMatch( aMatchSubTypes ); |
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194 } |
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195 |
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196 //----------------------------------------------------------------------------- |
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197 // CCFContextSubscriptionImpl::OnlyChangesIndicated |
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198 //----------------------------------------------------------------------------- |
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199 // |
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200 TBool CCFContextSubscriptionImpl::OnlyChangesIndicated() const |
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201 { |
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202 FUNC_LOG; |
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203 |
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204 return iOnlyChangesIndicated; |
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205 } |
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206 |
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207 //----------------------------------------------------------------------------- |
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208 // CCFContextSubscriptionImpl::SetOnlyChangesIndicated |
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209 //----------------------------------------------------------------------------- |
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210 // |
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211 void CCFContextSubscriptionImpl::SetOnlyChangesIndicated( |
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212 TBool aIndicateChangesOnly ) |
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213 { |
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214 FUNC_LOG; |
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215 |
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216 iOnlyChangesIndicated = aIndicateChangesOnly; |
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217 } |
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218 |
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219 //----------------------------------------------------------------------------- |
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220 // CCFContextSubscriptionImpl::SetOnlyChangesIndicated |
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221 //----------------------------------------------------------------------------- |
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222 // |
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223 void CCFContextSubscriptionImpl::SetDataObjectEnabled( TBool aEnabled ) |
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224 { |
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225 FUNC_LOG; |
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226 |
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227 iDataObjectEnabled = aEnabled; |
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228 } |
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229 |
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230 //----------------------------------------------------------------------------- |
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231 // CCFContextSubscriptionImpl::DataObjectEnabled |
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232 //----------------------------------------------------------------------------- |
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233 // |
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234 TBool CCFContextSubscriptionImpl::DataObjectEnabled() const |
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235 { |
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236 FUNC_LOG; |
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237 |
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238 return iDataObjectEnabled; |
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239 } |
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240 |
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241 //----------------------------------------------------------------------------- |
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242 // CCFContextSubscriptionImpl::ExternalizeL |
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243 //----------------------------------------------------------------------------- |
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244 // |
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245 EXPORT_C void CCFContextSubscriptionImpl::ExternalizeL( |
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246 RWriteStream& aStream ) |
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247 { |
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248 FUNC_LOG; |
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249 |
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250 // Context query |
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251 iContextQuery->ExternalizeL( aStream ); |
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252 |
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253 // Indicate only changes flag |
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254 aStream.WriteInt16L( iOnlyChangesIndicated ); |
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255 |
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256 // Enable data object |
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257 aStream.WriteInt16L( iDataObjectEnabled ); |
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258 |
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259 // Commit stream |
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260 aStream.CommitL(); |
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261 } |
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262 |
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263 //----------------------------------------------------------------------------- |
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264 // CCFContextSubscriptionImpl::InternalizeL |
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265 //----------------------------------------------------------------------------- |
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266 // |
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267 EXPORT_C void CCFContextSubscriptionImpl::InternalizeL( |
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268 RReadStream& aStream) |
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269 { |
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270 FUNC_LOG; |
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271 |
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272 // Context query |
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273 iContextQuery->InternalizeL( aStream ); |
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274 |
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275 // Indicate only changes flag |
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276 iOnlyChangesIndicated = aStream.ReadInt16L(); |
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277 |
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278 // Enable data object |
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279 iDataObjectEnabled = aStream.ReadInt16L(); |
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280 } |
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281 |
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282 //----------------------------------------------------------------------------- |
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283 // CCFContextSubscriptionImpl::Size |
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284 //----------------------------------------------------------------------------- |
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285 // |
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286 EXPORT_C TInt CCFContextSubscriptionImpl::Size() const |
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287 { |
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288 FUNC_LOG; |
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289 |
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290 TInt size = 0; |
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291 |
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292 // Context query |
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293 size += iContextQuery->Size(); |
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294 |
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295 // Indicate only changes flag |
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296 size += sizeof( iOnlyChangesIndicated ); |
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297 |
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298 // Enable data object flag |
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299 size += sizeof( iDataObjectEnabled ); |
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300 |
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301 return size; |
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302 } |
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303 |
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304 //----------------------------------------------------------------------------- |
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305 // CCFContextSubscriptionImpl::SubscriptionListener |
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306 //----------------------------------------------------------------------------- |
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307 // |
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308 EXPORT_C MCFContextSubscriptionListener& |
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309 CCFContextSubscriptionImpl::SubscriptionListener() const |
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310 { |
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311 FUNC_LOG; |
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312 |
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313 return *iSubscriptionListener; |
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314 } |
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315 |
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316 //----------------------------------------------------------------------------- |
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317 // CCFContextSubscriptionImpl::SetSubscriptionListener |
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318 //----------------------------------------------------------------------------- |
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319 // |
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320 EXPORT_C void CCFContextSubscriptionImpl::SetSubscriptionListener( |
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321 MCFContextSubscriptionListener& aListener ) |
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322 { |
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323 FUNC_LOG; |
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324 |
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325 iSubscriptionListener = &aListener; |
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326 } |
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327 |
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328 //----------------------------------------------------------------------------- |
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329 // CCFContextSubscriptionImpl::EvaluateContextChangeL |
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330 //----------------------------------------------------------------------------- |
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331 // |
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332 EXPORT_C void CCFContextSubscriptionImpl::EvaluateContextChangeL( |
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333 const CCFContextObject& aNewContext, |
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334 const CCFContextObject& /*aOldContext*/, |
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335 TBool aValueChanged ) const |
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336 { |
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337 FUNC_LOG; |
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338 |
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339 __ASSERT_DEBUG( iSubscriptionListener, Panic( ENoListenerSet ) ); |
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340 |
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341 if( NotificationNeeded( aNewContext, aValueChanged ) ) |
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342 { |
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343 CCFContextIndicationImpl* indication = |
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344 CCFContextIndicationImpl::NewLC( KNullUid ); |
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345 indication->SetContextL( aNewContext ); |
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346 iSubscriptionListener->ContextIndicationL( indication ); |
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347 CleanupStack::Pop( indication ); |
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348 } |
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349 } |
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350 |
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351 //----------------------------------------------------------------------------- |
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352 // CCFContextSubscriptionImpl::EvaluateContextChangeL |
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353 //----------------------------------------------------------------------------- |
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354 // |
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355 EXPORT_C void CCFContextSubscriptionImpl::EvaluateContextChangeL( |
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356 const CCFContextObject& aNewContext, |
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357 CCFContextDataObject& aData, |
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358 TBool aValueChanged ) const |
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359 { |
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360 FUNC_LOG; |
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361 |
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362 __ASSERT_DEBUG( iSubscriptionListener, Panic( ENoListenerSet ) ); |
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363 |
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364 if( NotificationNeeded( aNewContext, aValueChanged ) ) |
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365 { |
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366 CCFContextIndicationImpl* indication = |
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367 CCFContextIndicationImpl::NewLC( aData.Uid() ); |
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368 indication->SetContextL( aNewContext ); |
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369 |
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370 // If data object associated and it is required by the subscriber, add |
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371 // it in the context indication. |
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372 if( iDataObjectEnabled ) |
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373 { |
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374 // Stream data object |
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375 HBufC8* data = HBufC8::NewLC( aData.Size() ); |
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376 TPtr8 dataPtr( data->Des() ); |
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377 RDesWriteStream writeStream( dataPtr ); |
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378 writeStream.PushL(); |
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379 aData.ExternalizeL( writeStream ); |
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380 writeStream.CommitL(); |
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381 indication->SetDataObject( data ); |
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382 |
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383 // Clean up |
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384 CleanupStack::PopAndDestroy( &writeStream ); |
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385 CleanupStack::Pop( data ); |
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386 } |
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387 iSubscriptionListener->ContextIndicationL( indication ); |
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388 CleanupStack::Pop( indication ); |
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389 } |
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390 } |
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391 |
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392 //----------------------------------------------------------------------------- |
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393 // CCFContextSubscriptionImpl::IsSame |
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394 //----------------------------------------------------------------------------- |
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395 // |
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396 EXPORT_C TBool CCFContextSubscriptionImpl::IsSame( |
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397 const CCFContextSubscriptionImpl& aSubscription ) const |
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398 { |
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399 FUNC_LOG; |
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400 |
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401 // Check if we have the same session |
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402 if( &aSubscription.SubscriptionListener() != iSubscriptionListener ) |
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403 { |
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404 return EFalse; |
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405 } |
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406 |
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407 if( CCFContextQueryImpl::IsSame( |
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408 *iContextQuery, |
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409 *aSubscription.iContextQuery ) ) |
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410 { |
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411 return ETrue; |
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412 } |
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413 |
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414 return EFalse; |
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415 } |
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416 |
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417 //----------------------------------------------------------------------------- |
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418 // CCFContextSubscriptionImpl::Matches |
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419 //----------------------------------------------------------------------------- |
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420 // |
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421 EXPORT_C TBool CCFContextSubscriptionImpl::Matches( |
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422 const TDesC& aContextType ) const |
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423 { |
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424 FUNC_LOG; |
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425 |
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426 return iContextQuery->Type() == aContextType; |
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427 } |
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428 |
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429 //----------------------------------------------------------------------------- |
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430 // CCFContextSubscriptionImpl::Matches |
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431 //----------------------------------------------------------------------------- |
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432 // |
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433 EXPORT_C TBool CCFContextSubscriptionImpl::Matches( const TDesC& aContextType, |
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434 const TDesC& aContextSource ) const |
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435 { |
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436 FUNC_LOG; |
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437 |
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438 return iContextQuery->Matches( aContextType, aContextSource ); |
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439 } |
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440 |
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441 //----------------------------------------------------------------------------- |
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442 // CCFContextSubscriptionImpl::NotificationNeeded |
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443 //----------------------------------------------------------------------------- |
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444 // |
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445 TBool CCFContextSubscriptionImpl::NotificationNeeded( |
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446 const CCFContextObject& aNewContext, |
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447 TBool aValueChanged ) const |
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448 { |
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449 FUNC_LOG; |
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450 |
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451 TBool need = EFalse; |
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452 if( !iOnlyChangesIndicated || ( iOnlyChangesIndicated && aValueChanged ) ) |
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453 { |
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454 if( iContextQuery->Matches( aNewContext.Type(), aNewContext.Source() ) ) |
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455 { |
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456 need = ETrue; |
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457 } |
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458 } |
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459 |
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460 return need; |
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461 } |