author | Tom Pritchard <tomp@symbian.org> |
Tue, 27 Jul 2010 16:01:31 +0100 | |
branch | AT_Test_LTSY |
changeset 55 | 2a8729f72b74 |
parent 0 | 3553901f7fa8 |
child 24 | 6638e7f4bd8f |
child 42 | 3adadc800673 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2000-2009 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: |
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// SIGNALSTRENGHWATCHER.CPP |
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// |
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// |
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// User includes |
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#include "watcherlog.h" |
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#include "signalstrengthwatcher.h" |
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|
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// System includes |
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#include <sacls.h> |
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#include <commsdat.h> |
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// In dBm |
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const TInt32 KSignalStrengthHigh = -51; |
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const TInt32 KSignalStrengthMedium = -77; |
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const TInt32 KSignalStrengthNone = -113; |
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const TInt8 KSignalZeroBars = 0; |
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const TInt8 KSignalThreeBars = 3; |
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const TInt8 KSignalFiveBars = 5; |
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|
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// |
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// ------> Global exports |
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// |
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// |
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// ------> CSignalStrengthWatcher (source) |
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// |
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CSignalStrengthWatcher::CSignalStrengthWatcher() |
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: CPhoneWatcher() |
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{ |
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} |
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CSignalStrengthWatcher* CSignalStrengthWatcher::NewL(TAny* /*aWatcherParams*/) |
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{ |
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CSignalStrengthWatcher* self= new (ELeave) CSignalStrengthWatcher(); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(); |
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return self; |
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} |
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void CSignalStrengthWatcher::ConstructL() |
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{ |
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CWatcherBase::ConstructL(); |
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User::LeaveIfError(iNetworkStrengthProperty.Attach(KUidSystemCategory, KUidNetworkStrength.iUid)); |
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} |
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CSignalStrengthWatcher::~CSignalStrengthWatcher() |
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{ |
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Cancel(); |
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iNetworkStrengthProperty.Close(); |
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} |
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// |
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// |
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// |
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void CSignalStrengthWatcher::HandlePhoneStateEventL(TInt aCompletionCode) |
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{ |
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switch(SignalStrengthState()) |
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{ |
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case ESignalStrengthNotYetInitialised: |
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case ESignalStrengthStateRequestInitialSignalStrength: |
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LOGSIGNAL1("SignalStrengthWatcher : Requesting initial signal strength"); |
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Phone().GetSignalStrength(iStatus, iSignalStrength, iSignalBars); |
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SignalStrengthState() = ESignalStrengthWaitingForInitialSignalStrength; |
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SetActive(); |
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break; |
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case ESignalStrengthWaitingForInitialSignalStrength: |
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SignalStrengthState() = ESignalStrengthStateIssuingSignalChangeNotificationRequest; |
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HandleSignalStrengthUpdateL(aCompletionCode); |
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break; |
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case ESignalStrengthStateIssuingSignalChangeNotificationRequest: |
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HandleSignalStrengthUpdateL(aCompletionCode); |
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break; |
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default: |
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__ASSERT_DEBUG(0, SignalPanic(EUnexpectedState)); |
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} |
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} |
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void CSignalStrengthWatcher::HandleCancel() |
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{ |
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if (Phone().SubSessionHandle() == KNullHandle) |
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return; |
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|
106 |
|
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107 |
if (SignalStrengthState() == ESignalStrengthWaitingForInitialSignalStrength) |
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|
108 |
Phone().CancelAsyncRequest(EMobilePhoneGetSignalStrength); |
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109 |
else if (SignalStrengthState() == ESignalStrengthStateIssuingSignalChangeNotificationRequest) |
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|
110 |
Phone().CancelAsyncRequest(EMobilePhoneNotifySignalStrengthChange); |
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111 |
} |
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|
112 |
|
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113 |
void CSignalStrengthWatcher::ReleasePhoneResources() |
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114 |
// |
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115 |
// Called by the phone watcher base class. Release any telephony related |
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116 |
// resources and reset and state. |
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117 |
// |
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118 |
{ |
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119 |
// This is only called within RunL and therefore we can't be active |
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120 |
__ASSERT_DEBUG(!IsActive(), SignalPanic(EUnexpectedActiveState)); |
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121 |
|
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122 |
// Reset state |
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123 |
iState = ESignalStrengthNotYetInitialised; |
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124 |
} |
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125 |
|
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|
126 |
|
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127 |
// |
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128 |
// |
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129 |
// |
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130 |
|
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131 |
void CSignalStrengthWatcher::HandleSignalStrengthUpdateL(TInt aCompletionCode) |
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132 |
{ |
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LOGSIGNAL1("SignalStrengthNotifier : Handling signal strength update"); |
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134 |
if (aCompletionCode < KErrNone) |
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135 |
{ |
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136 |
LOGSIGNAL2("SignalStrengthNotifier : Handling request error (%d)", aCompletionCode); |
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|
137 |
|
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138 |
// Indicate we don't know what the signal strength is |
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139 |
TInt ret = iNetworkStrengthProperty.Set(ESANetworkStrengthUnknown); |
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140 |
if (!(ret == KErrNone || ret == KErrNotFound)) |
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141 |
User::Leave(ret); |
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|
142 |
|
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143 |
if (aCompletionCode == KErrNotSupported) |
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|
144 |
{ |
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145 |
// If the TSY returns 'Not supported' then it isn't |
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146 |
// worth re-sending the request, so give up gracefully. |
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147 |
SetDisabled(_L("SignalStrengthNotifier : TSY returned not supported (%d)"), aCompletionCode); |
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148 |
} |
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149 |
else if (aCompletionCode == KErrCancel) |
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|
150 |
{ |
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151 |
// Signal Strength watcher was cancelled |
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152 |
SetDisabled(_L("SignalStrengthNotifier : TSY has cancelled request (%d)"), aCompletionCode); |
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153 |
} |
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154 |
else if (aCompletionCode == KWatcherBaseModemNotDetected) |
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|
155 |
{ |
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156 |
// We should release all telephony related resources until the |
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157 |
// phone is available again. |
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158 |
Cancel(); |
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|
159 |
Reset(); |
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|
160 |
|
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161 |
// The modem / phone cannot be found. Wait until it becomes available again... |
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|
162 |
WaitForPhoneToPowerUpL(); |
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|
163 |
} |
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|
164 |
else if (ErrorCountIncrement() >= KErrorRetryCount) |
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|
165 |
{ |
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|
166 |
// We've already tried as many times as possible. Shut ourselves down forever. |
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|
167 |
// This watcher will be restarted when the machine is rebooted. |
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|
168 |
SetDisabled(_L("SignalStrengthNotifier : Max retries reached or exceeded. Shutting down until reboot."), 0); |
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|
169 |
} |
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|
170 |
else |
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|
171 |
{ |
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|
172 |
// Doing this means we will asynchronously request the signal strength |
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|
173 |
// so that we can update to a real value again. |
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|
174 |
SignalStrengthState() = ESignalStrengthNotYetInitialised; |
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|
175 |
SuspendFor(KErrorRetryPausePeriod); |
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|
176 |
} |
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|
177 |
} |
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|
178 |
else |
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|
179 |
{ |
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|
180 |
LOGSIGNAL2("SignalStrengthNotifier : Signal strength is: %d", (TInt) iSignalStrength); |
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|
181 |
LOGSIGNAL2("SignalStrengthNotifier : Signal bars is: %d", iSignalBars); |
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|
182 |
|
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|
183 |
// What is the signal strength now? |
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|
184 |
TInt newState = ESANetworkStrengthUnknown; |
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|
185 |
// iSignalStrength is in dBm - hence use of negative numbers |
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|
186 |
if ((iSignalStrength == KSignalStrengthNone) || (iSignalBars == KSignalZeroBars)) |
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|
187 |
newState = ESANetworkStrengthNone; |
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|
188 |
else if ((iSignalStrength < KSignalStrengthMedium) || (iSignalBars < KSignalThreeBars)) |
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|
189 |
newState = ESANetworkStrengthLow; |
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|
190 |
else if ((iSignalStrength < KSignalStrengthHigh) || (iSignalBars < KSignalFiveBars)) |
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|
191 |
newState = ESANetworkStrengthMedium; |
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|
192 |
else |
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|
193 |
newState = ESANetworkStrengthHigh; |
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|
194 |
|
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|
195 |
// Update properties |
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|
196 |
LOGSIGNAL1("SignalStrengthNotifier : Informing properties of signal strength change"); |
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|
197 |
TInt ret = iNetworkStrengthProperty.Set(newState); |
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|
198 |
if (!(ret == KErrNone || ret == KErrNotFound)) |
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|
199 |
User::Leave(ret); |
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|
200 |
|
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|
201 |
LOGSIGNAL1("SignalStrengthNotifier : Requesting signal strength change notification"); |
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|
202 |
Phone().NotifySignalStrengthChange(iStatus, iSignalStrength, iSignalBars); |
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|
203 |
SetActive(); |
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|
204 |
} |
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|
205 |
} |
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|
206 |
|
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|
207 |
|
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|
208 |
// |
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diff
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// |
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// Panic Function |
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void CSignalStrengthWatcher::SignalPanic(TWatcherPanic aPanicNumber) |
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{ |
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_LIT(panicText,"Signal Strength Watcher"); |
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User::Panic(panicText,aPanicNumber); |
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} |
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