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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/dummy__backup__statepolicy_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/AppFramework/ssmanager/policies/sysstates/dummy_backup_statepolicy.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/AppFramework/ssmanager/policies/sysstates/dummy_backup_statepolicy.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
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<a name="l00002"></a>00002 <span class="comment">// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00003"></a>00003 <span class="comment">// All rights reserved.</span>
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<a name="l00004"></a>00004 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00005"></a>00005 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00006"></a>00006 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00007"></a>00007 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00008"></a>00008 <span class="comment">//</span>
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<a name="l00009"></a>00009 <span class="comment">// Initial Contributors:</span>
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<a name="l00010"></a>00010 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00011"></a>00011 <span class="comment">//</span>
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<a name="l00012"></a>00012 <span class="comment">// Contributors:</span>
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<a name="l00013"></a>00013 <span class="comment">//</span>
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<a name="l00014"></a>00014 <span class="comment">// Description: A dummy back up state policy is provided to demonstrate the utility</span>
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<a name="l00015"></a>00015 <span class="comment">// of System State Manager framework.</span>
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<a name="l00016"></a>00016 <span class="comment">//</span>
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<a name="l00017"></a>00017
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<a name="l00032"></a>00032 <span class="preprocessor">#include &lt;ssm/ssmcommandlist.h&gt;</span>
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<a name="l00033"></a>00033 <span class="preprocessor">#include &lt;ssm/ssmcommandlistresourcereader.h&gt;</span>
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<a name="l00034"></a>00034 <span class="preprocessor">#include &lt;ssm/ssmsubstates.hrh&gt;</span>
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<a name="l00035"></a>00035 <span class="preprocessor">#include &quot;dummy_backup_statepolicy.h&quot;</span>
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<a name="l00036"></a>00036
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<a name="l00040"></a>00040 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCommandListPath, <span class="stringliteral">&quot;z:\\private\\2000d75b\\ssmaeg\\state_dummy_backup\\&quot;</span>);
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<a name="l00041"></a>00041
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<a name="l00045"></a>00045 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KExamplePolicyPanic,<span class="stringliteral">&quot;Dummy Back up State Policy&quot;</span>);
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<a name="l00046"></a>00046
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<a name="l00052"></a>00052 EXPORT_C MSsmStatePolicy* CSsmDummyBackUpStatePolicy::NewL()
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<a name="l00053"></a>00053         {
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<a name="l00054"></a>00054         CSsmDummyBackUpStatePolicy* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) CSsmDummyBackUpStatePolicy;
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<a name="l00055"></a>00055         CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00056"></a>00056         <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00057"></a>00057         CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00058"></a>00058         <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00059"></a>00059         }
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<a name="l00060"></a>00060
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<a name="l00064"></a>00064 CSsmDummyBackUpStatePolicy::CSsmDummyBackUpStatePolicy()
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<a name="l00065"></a>00065         {
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<a name="l00066"></a>00066         }
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<a name="l00067"></a>00067
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<a name="l00071"></a>00071 CSsmDummyBackUpStatePolicy::~CSsmDummyBackUpStatePolicy()
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<a name="l00072"></a>00072         {
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<a name="l00073"></a>00073         <span class="keyword">delete</span> iCommandListResourceReader;
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<a name="l00074"></a>00074         iFs.Close();
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<a name="l00075"></a>00075         iCurrentlySupportedTransitions.Close();
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<a name="l00076"></a>00076         }
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<a name="l00077"></a>00077
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<a name="l00083"></a>00083 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::ConstructL()
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<a name="l00084"></a>00084         {
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<a name="l00085"></a>00085         User::LeaveIfError(iFs.Connect());
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087         <span class="comment">// Add supported transitions from Backup &#39;ESsmBackupSubState&#39;</span>
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<a name="l00088"></a>00088         iCurrentlySupportedTransitions.AppendL(TSsmState(ESsmShutdown, KSsmAnySubState));
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<a name="l00089"></a>00089         iCurrentlySupportedTransitions.AppendL(TSsmState(ESsmFail, KSsmAnySubState));
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<a name="l00090"></a>00090         iCurrentlySupportedTransitions.AppendL(TSsmState(ESsmShutdown, ESsmShutdownSubStateCritical));
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<a name="l00091"></a>00091         iCurrentlySupportedTransitions.AppendL(TSsmState(ESsmNormal, KSsmAnySubState));
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<a name="l00092"></a>00092         iCurrentlySupportedTransitions.AppendL(TSsmState(ESsmRestore, ESsmRestoreSubState));
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<a name="l00093"></a>00093         <span class="comment">// create resource reader</span>
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<a name="l00094"></a>00094         iCommandListResourceReader = CSsmCommandListResourceReader::NewL(iFs, KCommandListPath(), *<span class="keyword">this</span>);
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<a name="l00095"></a>00095         }
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<a name="l00096"></a>00096
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<a name="l00105"></a>00105 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::Initialize(TRequestStatus&amp; aStatus)
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<a name="l00106"></a>00106         {
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<a name="l00107"></a>00107         __ASSERT_ALWAYS(iCommandListResourceReader, User::Panic(KExamplePolicyPanic, EInvalidResourceReader));
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<a name="l00108"></a>00108         <span class="comment">// initialise command list resource reader.</span>
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<a name="l00109"></a>00109         iCommandListResourceReader-&gt;Initialise(aStatus);
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<a name="l00110"></a>00110         }
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<a name="l00111"></a>00111
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<a name="l00119"></a>00119 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::InitializeCancel()
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<a name="l00120"></a>00120         {
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<a name="l00121"></a>00121         __ASSERT_ALWAYS(iCommandListResourceReader, User::Panic(KExamplePolicyPanic, EInvalidResourceReader));
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<a name="l00122"></a>00122         iCommandListResourceReader-&gt;InitialiseCancel();
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<a name="l00123"></a>00123         }
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<a name="l00124"></a>00124
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<a name="l00130"></a>00130 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::Release()
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<a name="l00131"></a>00131         {
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<a name="l00132"></a>00132         <span class="keyword">delete</span> <span class="keyword">this</span>;
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<a name="l00133"></a>00133         }
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<a name="l00134"></a>00134
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<a name="l00153"></a>00153 MSsmStatePolicy::TResponse CSsmDummyBackUpStatePolicy::TransitionAllowed(<span class="keyword">const</span> TSsmStateTransition&amp; aRequest, TSsmStateTransition <span class="keyword">const</span>* aCurrent, TSsmStateTransition <span class="keyword">const</span>* aQueued, <span class="keyword">const</span> RMessagePtr2&amp; aMessage)
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<a name="l00154"></a>00154         {
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<a name="l00155"></a>00155         TResponse response = ENotAllowed;
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<a name="l00156"></a>00156         <span class="keywordflow">if</span> (!aMessage.HasCapability(ECapabilityPowerMgmt))
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<a name="l00157"></a>00157                 {
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<a name="l00158"></a>00158                 <span class="keywordflow">return</span> response;
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<a name="l00159"></a>00159                 }
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<a name="l00160"></a>00160
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<a name="l00161"></a>00161         <span class="comment">//Check if the requested transition is supported from current state</span>
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<a name="l00162"></a>00162         <span class="keywordflow">if</span> (TransitionSupported(aRequest.State()))
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<a name="l00163"></a>00163                 {
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<a name="l00164"></a>00164                 <span class="keywordflow">if</span>((NULL == aCurrent) &amp;&amp; (NULL == aQueued))
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<a name="l00165"></a>00165                         {
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<a name="l00166"></a>00166                         <span class="comment">// SsmServer is idle</span>
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<a name="l00167"></a>00167                         response = EDefinitelyAllowed;
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<a name="l00168"></a>00168                         }
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<a name="l00169"></a>00169                 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(aRequest.State().MainState() == ESsmFail || aRequest.State().MainState() == ESsmShutdown)
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<a name="l00170"></a>00170                         {
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<a name="l00171"></a>00171                         <span class="comment">// Going into failed state will override anything currently ongoing or queued</span>
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<a name="l00172"></a>00172                         response = EReplaceCurrentClearQueue;
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<a name="l00173"></a>00173                         }
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<a name="l00174"></a>00174                 }
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<a name="l00175"></a>00175         <span class="keywordflow">return</span> response;
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<a name="l00176"></a>00176         }
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<a name="l00186"></a>00186 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::PrepareCommandList(TSsmState aState, TInt <span class="comment">/*aReason*/</span>, TRequestStatus&amp; aStatus)
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<a name="l00187"></a>00187         {
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<a name="l00188"></a>00188         __ASSERT_ALWAYS(iCommandListResourceReader, User::Panic(KExamplePolicyPanic, EInvalidResourceReader));
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<a name="l00189"></a>00189         <span class="comment">//Let&#39;s start from the beginning if no specific sub state is selected</span>
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<a name="l00190"></a>00190         <span class="keyword">const</span> TUint16 substate = aState.SubState();
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<a name="l00191"></a>00191         <span class="comment">//Build the command list from a resource for this substate</span>
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<a name="l00192"></a>00192         iCommandListResourceReader-&gt;PrepareCommandList(substate, aState, aStatus);
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<a name="l00193"></a>00193         }
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<a name="l00194"></a>00194
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<a name="l00200"></a>00200 <span class="keywordtype">void</span> CSsmDummyBackUpStatePolicy::PrepareCommandListCancel()
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<a name="l00201"></a>00201         {
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<a name="l00202"></a>00202         __ASSERT_ALWAYS(iCommandListResourceReader, User::Panic(KExamplePolicyPanic, EInvalidResourceReader));
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<a name="l00203"></a>00203         iCommandListResourceReader-&gt;PrepareCommandListCancel();
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<a name="l00204"></a>00204         }
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<a name="l00205"></a>00205
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<a name="l00212"></a>00212 CSsmCommandList* CSsmDummyBackUpStatePolicy::CommandList()
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<a name="l00213"></a>00213         {
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<a name="l00214"></a>00214         __ASSERT_ALWAYS(iCommandListResourceReader, User::Panic(KExamplePolicyPanic, EInvalidResourceReader));
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<a name="l00215"></a>00215         <span class="keywordflow">return</span> iCommandListResourceReader-&gt;GetCommandList();
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<a name="l00216"></a>00216         }
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<a name="l00217"></a>00217
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<a name="l00229"></a>00229 TBool CSsmDummyBackUpStatePolicy::GetNextState(TSsmState <span class="comment">/*aCurrentTransition*/</span>, TInt <span class="comment">/*aReason*/</span>, TInt <span class="comment">/*aError*/</span>, TInt <span class="comment">/*aSeverity*/</span>, TSsmState&amp; <span class="comment">/*aNextState*/</span>)
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<a name="l00230"></a>00230         {
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<a name="l00231"></a>00231         <span class="keywordflow">return</span> EFalse;
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<a name="l00232"></a>00232         }
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<a name="l00233"></a>00233
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<a name="l00244"></a>00244 TBool CSsmDummyBackUpStatePolicy::ConditionalCommandAllowedL(CResourceFile&amp; <span class="comment">/*aResourceFile*/</span>, TInt <span class="comment">/*aResourceId*/</span>)
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<a name="l00245"></a>00245         {
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<a name="l00246"></a>00246         <span class="keywordflow">return</span> EFalse; <span class="comment">//command list doesn&#39;t contains commands which have conditions and hence returning EFalse </span>
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<a name="l00247"></a>00247         }
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<a name="l00248"></a>00248
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<a name="l00249"></a>00249 <span class="comment">/*</span>
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<a name="l00250"></a>00250 <span class="comment">Helper function to check whether a requested transition is supported or not.</span>
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<a name="l00251"></a>00251 <span class="comment">@param aRequestedState Requested transition</span>
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<a name="l00252"></a>00252 <span class="comment">@return ETrue if transition is supported</span>
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<a name="l00253"></a>00253 <span class="comment">                EFalse if transition is not supported</span>
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<a name="l00254"></a>00254 <span class="comment">*/</span>
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<a name="l00255"></a>00255 TBool CSsmDummyBackUpStatePolicy::TransitionSupported(<span class="keyword">const</span> TSsmState&amp; aRequestedState)<span class="keyword"> const</span>
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<a name="l00256"></a>00256 <span class="keyword">        </span>{
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<a name="l00257"></a>00257         <span class="keywordflow">return</span> (iCurrentlySupportedTransitions.Find(aRequestedState) &gt; KErrNotFound);
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<a name="l00258"></a>00258         }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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