author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:20:04 +0100 | |
branch | RCL_3 |
changeset 23 | 9386f31cc85b |
parent 0 | f63038272f30 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Monitors BTRegistry device changes and sends the |
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* new status to listener |
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* |
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*/ |
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|
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#include "btregistryobserver.h" |
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#include "debug.h" |
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|
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#include <bt_subscribe.h> |
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const TInt KDeviceArrayDefaultSize=10; |
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// --------------------------------------------------------------------- |
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// Constructor |
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// --------------------------------------------------------------------- |
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CBTRegistryObserver::CBTRegistryObserver(MBTRegistryObserver* aObserver, |
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const TBTRegistrySearch aPattern) |
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: CActive(CActive::EPriorityHigh), |
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iObserver(aObserver), iSearchPattern(aPattern) |
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{ |
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TRACE_FUNC_ENTRY |
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CActiveScheduler::Add(this); |
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// The priority will be EPriorityHigh only initially. |
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// after the first successfull retrieval of the devicelist |
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// the priority will be changed to EPriorityLow. |
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|
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// This will make the 1st devicelist drawn as quickly as possible, |
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// but the subsequent refrehes will not decrease the responsiveness |
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// of the Btui. |
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iAnotherEventPending=EFalse; |
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|
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TRACE_FUNC_EXIT |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::NewL |
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// --------------------------------------------------------------------- |
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CBTRegistryObserver* CBTRegistryObserver::NewL(MBTRegistryObserver* aObserver, |
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const TBTRegistrySearch aPattern) |
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{ |
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CBTRegistryObserver* self = new (ELeave) CBTRegistryObserver(aObserver, aPattern); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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// --------------------------------------------------------------------- |
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// Destructor |
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// --------------------------------------------------------------------- |
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CBTRegistryObserver::~CBTRegistryObserver() |
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{ |
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TRACE_FUNC_ENTRY |
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Cancel(); |
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iProperty.Close(); |
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delete iDevMan; |
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|
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DeleteAllocatedDevices(); |
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|
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delete iRegDeviceArray; |
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iRegDeviceArray=NULL; |
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TRACE_FUNC_EXIT |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::ConstructL() |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::ConstructL() |
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{ |
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TRACE_FUNC_ENTRY |
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iRegDeviceArray = new (ELeave) CBTDeviceArray(KDeviceArrayDefaultSize); |
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iDevMan = CBTEngDevMan::NewL(this); |
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iDevMan->SetPriority(CActive::EPriorityHigh); |
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|
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iProperty.Attach(KPropertyUidBluetoothCategory, KPropertyKeyBluetoothGetRegistryTableChange); |
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StartIfNotRunning(); |
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TRACE_FUNC_EXIT |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::Refresh |
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// This will simulate registry change event. |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::Refresh() |
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{ |
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TRACE_FUNC_ENTRY |
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__ASSERT_DEBUG(iDevMan, User::Invariant()); |
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|
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if (iDevMan->IsActive()) |
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{ |
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// An attempt to start a new search, during a prior |
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// one. |
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iAnotherEventPending=ETrue; |
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return; |
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} |
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Cancel(); |
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|
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DeleteAllocatedDevices(); |
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iDevMan->GetDevices(iSearchPattern, iRegDeviceArray); |
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109 |
|
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StartIfNotRunning(); |
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111 |
|
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112 |
TRACE_FUNC_EXIT |
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113 |
} |
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114 |
|
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115 |
// --------------------------------------------------------------------- |
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116 |
// CBTRegistryObserver::StartIfNotRunning |
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// this have to be called again each time there has been registry event |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::StartIfNotRunning() |
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120 |
{ |
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121 |
TRACE_FUNC_ENTRY |
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if (!IsActive()) |
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123 |
{ |
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TRACE_INFO(_L("Start()")) |
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iIsStopped = EFalse; |
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iProperty.Subscribe(iStatus); |
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SetActive(); |
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} |
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129 |
TRACE_FUNC_EXIT |
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130 |
} |
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131 |
// --------------------------------------------------------------------- |
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// CBTRegistryObserver::RunL |
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// From CAtive |
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// This is called when registry has changed. This will not |
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// be called when BTRegistry date retrieval is complete, since |
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// HandleGetDevicesComplete is called when RBTregistry data retrieval |
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// is complete |
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138 |
// ---------------------------------------------------------------------- |
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139 |
|
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140 |
void CBTRegistryObserver::RunL() |
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141 |
{ |
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142 |
TRACE_FUNC_ENTRY |
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if(iDevMan && iDevMan->IsActive()) |
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144 |
{ |
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// An attempt to start a new search, during a prior |
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// one. We will not start a new search, but we |
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// will do it after the current search is complete |
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iAnotherEventPending=ETrue; |
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StartIfNotRunning(); |
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150 |
TRACE_FUNC_EXIT |
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return; |
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152 |
} |
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if(!IsActive()) |
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SetPriority(CActive::EPriorityLow); |
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155 |
|
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156 |
|
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157 |
|
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TInt registryTable; |
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iProperty.Get(registryTable); |
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iAnotherEventPending=EFalse; |
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161 |
|
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162 |
if(iDevMan && iStatus.Int() == KErrNone && registryTable == KRegistryChangeRemoteTable) |
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163 |
{ |
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TRACE_INFO(_L("Remote table change")) |
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165 |
|
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DeleteAllocatedDevices(); |
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iDevMan->GetDevices(iSearchPattern, iRegDeviceArray); |
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168 |
} |
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169 |
StartIfNotRunning(); |
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170 |
TRACE_FUNC_EXIT |
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171 |
} |
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172 |
|
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173 |
// --------------------------------------------------------------------- |
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174 |
// CBTRegistryObserver::HandleGetDevicesComplete |
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// From MBTEngDevManObserver |
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176 |
// |
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177 |
// This function will not filter out refreshes with no changes, |
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// since the connect status may have been changed in those cases, and |
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// this class does not know about that |
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180 |
// |
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181 |
// It is worth to mention that CBTDeviceContainer will not refresh parts |
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// of the screen that are not changed. |
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183 |
// --------------------------------------------------------------------- |
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184 |
void CBTRegistryObserver::HandleGetDevicesComplete(TInt aErr, CBTDeviceArray* aDeviceArray) |
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185 |
{ |
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186 |
TRACE_FUNC_ENTRY |
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TRACE_INFO((_L("aErr = %d"), aErr)) |
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188 |
|
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// the initial view refresh is done. We will decrese |
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// the priority of this component to quarantee UI |
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191 |
// responsiveness |
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192 |
if(!iDevMan->IsActive()) |
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iDevMan->SetPriority(CActive::EPriorityLow); |
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194 |
|
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195 |
TRAP_IGNORE( |
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196 |
if( aErr != KErrNotFound) |
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197 |
iObserver->RegistryChangedL(aDeviceArray ); |
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198 |
else |
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199 |
{ |
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// handle the empty response case. The DevMan may issue |
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201 |
// NULL in that case |
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iObserver->RegistryChangedL(iRegDeviceArray ); |
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203 |
} |
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204 |
); |
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205 |
|
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206 |
DeleteAllocatedDevices(); |
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207 |
|
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208 |
if(iAnotherEventPending) |
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209 |
{ |
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210 |
// Current results are not sent further, since |
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211 |
// there has been changes, witch may have rendered the current |
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// results allready obsolate. Therefore a refresh is made instead |
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213 |
|
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214 |
iAnotherEventPending=EFalse; |
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215 |
iDevMan->GetDevices(iSearchPattern, iRegDeviceArray); |
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} |
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TRACE_FUNC_EXIT |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::DeleteAllocatedDevices |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::DeleteAllocatedDevices() |
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{ |
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TRACE_FUNC_ENTRY |
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if(iRegDeviceArray) |
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{ |
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iRegDeviceArray->ResetAndDestroy(); |
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} |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::Cancel |
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// From CActive |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::Cancel() |
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{ |
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TRACE_FUNC_ENTRY |
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iIsStopped = ETrue; |
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iAnotherEventPending=EFalse; |
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CActive::Cancel(); |
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if (iDevMan) iDevMan->Cancel(); |
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DeleteAllocatedDevices(); |
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TRACE_FUNC_EXIT |
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} |
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// --------------------------------------------------------------------- |
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// CBTRegistryObserver::DoCancel |
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// From CActive |
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// --------------------------------------------------------------------- |
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void CBTRegistryObserver::DoCancel() |
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{ |
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TRACE_FUNC_ENTRY |
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iProperty.Cancel(); |
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TRACE_FUNC_EXIT |
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} |