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1 /* |
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2 * Copyright (c) 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: |
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15 * Implementation for the CEventManagerBase class |
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16 * |
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17 */ |
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18 |
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19 |
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20 #include <e32base.h> |
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21 #include "doseventmanagerbase.h" |
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22 #include "dosevent.h" |
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23 #include "doswaitingevent.h" |
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24 |
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25 // |
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26 // --------------------------------------------------------- |
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27 // CDosEventManagerBase Constructor |
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28 // --------------------------------------------------------- |
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29 // |
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30 |
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31 CEventManagerBase::CEventManagerBase() : iOrder(CDosEvent::Compare) |
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32 { |
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33 } |
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34 |
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35 // |
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36 // --------------------------------------------------------- |
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37 // CDosEventManagerBase Destructor |
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38 // --------------------------------------------------------- |
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39 // |
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40 |
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41 CEventManagerBase::~CEventManagerBase() |
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42 { |
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43 iEventArray.ResetAndDestroy(); |
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44 iEventArray.Close(); |
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45 } |
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46 |
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47 // |
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48 // --------------------------------------------------------- |
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49 // CDosEventManagerBase::RaiseEvent |
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50 // |
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51 // This version of the function is used by the derived |
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52 // class. |
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53 // --------------------------------------------------------- |
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54 // |
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55 |
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56 TInt CEventManagerBase::RaiseEvent(TUint aEvent,TAny* aParameter,TInt aParLength) |
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57 { |
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58 CDosEvent* event=NULL; |
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59 TInt err=KErrNone; |
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60 |
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61 LookForEventInArray(aEvent,event); |
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62 if(event) |
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63 { |
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64 //Create the waiting event |
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65 |
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66 CDosWaitingEvent* waitingEvent = NULL; |
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67 waitingEvent = new CDosWaitingEvent; |
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68 if(waitingEvent) |
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69 { |
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70 TRAP(err,waitingEvent->SetParameterL(aParameter,aParLength)); |
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71 if(!err) |
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72 { |
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73 event->InformListeners(waitingEvent); |
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74 if(!waitingEvent->IsQueued()) //If it hasn't been queued anywhere we delete it here. |
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75 { |
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76 delete waitingEvent; |
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77 } |
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78 } |
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79 else |
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80 { |
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81 delete waitingEvent; |
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82 } |
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83 return err; |
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84 } |
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85 return KErrNoMemory; |
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86 } |
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87 //If the event is not in the array this call is ignored |
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88 return KErrNotFound; |
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89 } |
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90 |
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91 // |
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92 // --------------------------------------------------------- |
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93 // CDosEventManagerBase::RaiseEvent |
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94 // |
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95 // This version is intended to be used by calls originated |
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96 // by RDosEventSnd. |
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97 // --------------------------------------------------------- |
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98 // |
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99 |
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100 TInt CEventManagerBase::RaiseEvent(const RMessage2& aMessage) |
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101 { |
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102 CDosEvent* event=NULL; |
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103 TInt err=KErrNone; |
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104 |
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105 LookForEventInArray((TInt32)aMessage.Ptr0(),event); |
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106 if(event) |
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107 { |
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108 //Create the waiting event |
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109 |
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110 CDosWaitingEvent* waitingEvent = NULL; |
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111 waitingEvent = new CDosWaitingEvent; |
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112 if(waitingEvent) |
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113 { |
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114 TRAP(err,waitingEvent->SetParameterL(aMessage)); |
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115 if(!err) |
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116 { |
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117 event->InformListeners(waitingEvent); |
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118 if(!waitingEvent->IsQueued()) //If it hasn't been queued anywhere we delete it here. |
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119 { |
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120 delete waitingEvent; |
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121 } |
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122 } |
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123 else |
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124 { |
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125 delete waitingEvent; |
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126 } |
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127 return err; |
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128 } |
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129 return KErrNoMemory; |
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130 } |
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131 //If the event is not in the array this call is ignored |
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132 return KErrNotFound; |
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133 } |
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134 |
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135 // |
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136 // --------------------------------------------------------- |
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137 // CDosEventManagerBase::RegisterListenerL |
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138 // --------------------------------------------------------- |
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139 // |
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140 |
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141 TInt CEventManagerBase::RegisterListenerL(CDosEventRcvService* aListener,TUint aEvent) |
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142 { |
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143 //We look for the Event in the array. |
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144 CDosEvent* event=NULL; |
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145 |
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146 LookForEventInArray(aEvent,event); |
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147 if(!event) |
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148 { |
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149 //The Event didn't exist so we create it |
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150 event = CDosEvent::NewL(aEvent); |
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151 |
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152 //We add it to iEventArray |
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153 iEventArray.InsertInOrder(event,iOrder); |
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154 } |
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155 |
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156 //We add the listener to the Event's list |
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157 event->AddListener(aListener); |
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158 |
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159 return KErrNone; |
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160 } |
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161 |
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162 // |
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163 // --------------------------------------------------------- |
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164 // CDosEventManagerBase::LookForEventInArray |
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165 // --------------------------------------------------------- |
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166 // |
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167 |
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168 void CEventManagerBase::LookForEventInArray(TUint aEventName,CDosEvent*& aEventPtr) |
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169 { |
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170 for(TInt i=iEventArray.Count()-1;i>=0;i--) //it counts backwards for eficiency |
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171 { |
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172 if(iEventArray[i]->Event()==aEventName) |
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173 { |
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174 //Found |
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175 aEventPtr = iEventArray[i]; |
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176 break; |
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177 } |
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178 |
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179 if(iEventArray[i]->Event()<aEventName) |
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180 { |
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181 //Not found |
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182 aEventPtr = NULL; |
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183 break; |
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184 } |
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185 } |
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186 } |
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187 |
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188 // |
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189 // --------------------------------------------------------- |
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190 // CDosEventManagerBase::UnRegisterListener |
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191 // --------------------------------------------------------- |
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192 // |
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193 |
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194 TInt CEventManagerBase::UnRegisterListener(CDosEventRcvService* aListener, TUint aEvent) |
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195 { |
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196 CDosEvent* event=NULL; |
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197 |
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198 LookForEventInArray(aEvent,event); |
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199 if(!event) |
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200 { |
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201 //The event wasn't found on the Events array |
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202 return KErrNotFound; |
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203 } |
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204 |
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205 //Remove the listener from the list |
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206 event->RemoveListener(aListener); |
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207 |
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208 //Check if the event doesn't have anymore listeners. |
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209 if(event->ListenerCount()==0) |
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210 { |
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211 TInt index; |
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212 //No more Listeners. The event can be removed from the list |
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213 iEventArray.FindInOrder(event,index,iOrder); |
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214 iEventArray.Remove(index); |
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215 delete event; |
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216 } |
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217 return KErrNone; |
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218 } |
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219 |
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220 |