sysstatemgmt/systemstatemgr/cmd/src/cmdreqswpchange.cpp
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     1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include <s32strm.h>
       
    17 #include <barsread2.h>
       
    18 
       
    19 #include "cmdreqswpchange.h"
       
    20 #include "ssmdebug.h"
       
    21 #include "ssmpanic.h"
       
    22 #include "ssmcommandparameters.h"
       
    23 
       
    24 /**
       
    25 Used to create an instance of CCmdReqSwpChange class from a read stream.
       
    26 CSsmCommandList::InternalizeL() uses this method to construct a command from stream.
       
    27 
       
    28 @param aReadStream Read stream containing data through which object can be created
       
    29 @return	A pointer to an object of type CCmdReqSwpChange.
       
    30 */
       
    31 CCmdReqSwpChange* CCmdReqSwpChange::NewL(RReadStream& aReadStream)
       
    32 	{
       
    33 	CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange();
       
    34 	CleanupStack::PushL(self);
       
    35 	self->ConstructL(aReadStream);
       
    36 	CleanupStack::Pop(self);
       
    37 	return self;
       
    38 	}
       
    39 
       
    40 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
    41 /**
       
    42 Used to create an instance of CCmdReqSwpChange class from given parameters.
       
    43 This method is used by SsmCommandFactory to create a command.
       
    44  
       
    45 @param aSeverity The severity of the command
       
    46 @param aExecutionBehaviour The execution behaviour of the command
       
    47 @param aSwpInfo System wide property settings
       
    48 @param aPriority The priority of the command in the list
       
    49 @return	A pointer to an object of type CCmdReqSwpChange.
       
    50 */
       
    51 CCmdReqSwpChange* CCmdReqSwpChange::NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TSsmSwp& aSwpInfo, const TUint16 aPriority)
       
    52 	{
       
    53 	CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange(aSeverity, aExecutionBehaviour, aSwpInfo, aPriority);
       
    54 	CleanupStack::PushL(self);
       
    55 	self->ConstructL();
       
    56 	CleanupStack::Pop(self);
       
    57 	return self;
       
    58 	}
       
    59 #endif
       
    60 
       
    61 /**
       
    62 Used to create an instance of CCmdReqSwpChange class from given parameters.
       
    63 This method is used by SsmCommandFactory to create a command.
       
    64  
       
    65 @param aSeverity The severity of the command
       
    66 @param aExecutionBehaviour The execution behaviour of the command
       
    67 @param aSwpInfo System wide property settings
       
    68 @return	A pointer to an object of type CCmdReqSwpChange.
       
    69 */
       
    70 CCmdReqSwpChange* CCmdReqSwpChange::NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TSsmSwp& aSwpInfo)
       
    71 	{
       
    72 	CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange(aSeverity, aExecutionBehaviour, aSwpInfo);
       
    73 	CleanupStack::PushL(self);
       
    74 	self->ConstructL();
       
    75 	CleanupStack::Pop(self);
       
    76 	return self;
       
    77 	}
       
    78 
       
    79 /**
       
    80 Used to create an instance of CCmdReqSwpChange class from resource.
       
    81 
       
    82 @param aCommandParameters Object data from a resource file
       
    83 @return	A pointer to an object of type CCmdReqSwpChange.
       
    84 */	
       
    85 CCmdReqSwpChange* CCmdReqSwpChange::NewL(TSsmCommandParameters& aCommandParameters)
       
    86 	{
       
    87 	CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange();
       
    88 	CleanupStack::PushL(self);
       
    89 	self->ConstructL(aCommandParameters);
       
    90 	CleanupStack::Pop(self);
       
    91 	return self;
       
    92 	}
       
    93 
       
    94 /**
       
    95 Used to create an instance of CCmdReqSwpChange class from CCmdReqSwpChange object
       
    96 Must be used only by CLE
       
    97 @param aCmdReqSwpChange CCmdReqSwpChange reference
       
    98 @return A pointer to an object of type CCmdReqSwpChange.
       
    99 */
       
   100 CCmdReqSwpChange* CCmdReqSwpChange::NewLC(const CCmdReqSwpChange& aCmdReqSwpChange)
       
   101     {
       
   102 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   103     CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange(aCmdReqSwpChange.Severity(),aCmdReqSwpChange.ExecutionBehaviour(),
       
   104                                                            aCmdReqSwpChange.SsmSwpInfo(),aCmdReqSwpChange.Priority());
       
   105 #else
       
   106     CCmdReqSwpChange* self = new (ELeave) CCmdReqSwpChange(aCmdReqSwpChange.Severity(),aCmdReqSwpChange.ExecutionBehaviour(),
       
   107                                                                aCmdReqSwpChange.SsmSwpInfo());
       
   108 #endif
       
   109     CleanupStack::PushL(self);
       
   110     self->ConstructL(aCmdReqSwpChange);
       
   111     return self;
       
   112     }
       
   113 
       
   114 void CCmdReqSwpChange::ConstructL(const CCmdReqSwpChange& aCmdReqSwpChange)
       
   115     {
       
   116     iConditionalResourceId = aCmdReqSwpChange.ConditionalInformation();
       
   117 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   118 	if (iConditionalResourceId != 0)
       
   119         {
       
   120         SetCommandResourceFileNameL(aCmdReqSwpChange.GetCommandResourceFileName());
       
   121         } 
       
   122 #endif 
       
   123     }
       
   124 
       
   125 /**
       
   126 Destructor
       
   127 */	
       
   128 CCmdReqSwpChange::~CCmdReqSwpChange()
       
   129 	{
       
   130 	Cancel();
       
   131 	iSsmStateManager.Close();
       
   132 	}
       
   133 
       
   134 /**
       
   135 Initialises the BIC's active object and initiates the command
       
   136 
       
   137 @param aStatus 	the TRequestStatus of the active object calling this BIC
       
   138 */	
       
   139 void CCmdReqSwpChange::Execute( TRequestStatus& aStatus )
       
   140 	{
       
   141 	aStatus = KRequestPending;
       
   142 	iExecuteRequest = &aStatus;
       
   143 
       
   144 	TInt err = iSsmStateManager.Connect();
       
   145     if(err == KErrNone)
       
   146 		{
       
   147         iSsmStateManager.RequestSwpChange(iSwpInfo, iStatus);
       
   148 		}
       
   149     else
       
   150 		{
       
   151         // pass the error connecting to RunL
       
   152         iStatus = KRequestPending;
       
   153         TRequestStatus* statusPtr = &iStatus;
       
   154         User::RequestComplete(statusPtr, err);
       
   155 		}
       
   156 
       
   157 	if (iExecutionBehaviour != ESsmWaitForSignal)
       
   158 		{
       
   159 		// complete the command request and initiate execution of next command
       
   160 		CompleteExecuteRequest(KErrNone);
       
   161 		}
       
   162 	SetActive();
       
   163 	}
       
   164 
       
   165 /**
       
   166 Releases resources associated with this BIC
       
   167 */	
       
   168 void CCmdReqSwpChange::Release()
       
   169 	{
       
   170 	delete this;
       
   171 	}
       
   172 
       
   173 /**
       
   174 Initiates a Cancel on the object. 
       
   175 */	
       
   176 void CCmdReqSwpChange::ExecuteCancel()
       
   177 	{
       
   178 	//cancel the outstanding request
       
   179 	Cancel();
       
   180 	//and complete the request with KErrCancel
       
   181 	CompleteDeferredExecuteRequest(KErrCancel);
       
   182 	}
       
   183 
       
   184 /**
       
   185 Returns the Type of the BIC
       
   186 @return	The Type of the BIC
       
   187 */	
       
   188 TSsmCommandType CCmdReqSwpChange::Type() const
       
   189 	{
       
   190 	return (ESsmCmdReqSwProperty);
       
   191 	}
       
   192 
       
   193 /**
       
   194 Returns the Version of the BIC
       
   195 @return	The maximum supported version of the BIC
       
   196 */	
       
   197 TInt CCmdReqSwpChange::MaxSupportedVersion()
       
   198 	{
       
   199 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   200 	return (static_cast<TInt>(ECmdReqSwPropertyVersionWithPriority));
       
   201 #else
       
   202 	return (static_cast<TInt>(ECmdReqSwPropertyInitialVersion));
       
   203 #endif
       
   204 	}
       
   205 
       
   206 /**
       
   207 Configures the BIC using data contained in a ReadStream
       
   208 @param aReadStream A read stream containing BIC data
       
   209 */
       
   210 void CCmdReqSwpChange::InternalizeL(RReadStream& aReadStream)
       
   211 	{
       
   212 	iSeverity = static_cast<TCmdErrorSeverity>(aReadStream.ReadInt16L());
       
   213 	iExecutionBehaviour = static_cast<TSsmExecutionBehaviour>(aReadStream.ReadUint8L());
       
   214 	const TUint key = aReadStream.ReadUint32L();
       
   215 	const TInt value = aReadStream.ReadInt32L();
       
   216 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   217 	iPriority = aReadStream.ReadUint16L();
       
   218 #endif
       
   219 	TSsmSwp swpinfo(key, value);
       
   220 
       
   221 	iSwpInfo = swpinfo;
       
   222 	}
       
   223 
       
   224 /**
       
   225 Externalises the configuration of the BIC
       
   226 @param aWriteStream A write stream to write BIC data to
       
   227 */
       
   228 void CCmdReqSwpChange::ExternalizeL(RWriteStream& aWriteStream) const
       
   229 	{
       
   230 	aWriteStream.WriteInt16L(iSeverity);
       
   231 	aWriteStream.WriteUint8L(iExecutionBehaviour);
       
   232 	aWriteStream.WriteUint32L(iSwpInfo.Key());
       
   233 	aWriteStream.WriteInt32L(iSwpInfo.Value());
       
   234 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   235 	aWriteStream.WriteUint16L(iPriority);
       
   236 #endif
       
   237 	}
       
   238 
       
   239 /**
       
   240 Completes the tasks of the BIC
       
   241 */
       
   242 void CCmdReqSwpChange::RunL()
       
   243 	{
       
   244 	CompleteDeferredExecuteRequest(iStatus.Int());
       
   245 	}
       
   246 
       
   247 /**
       
   248 Called during cancellation of the active BIC
       
   249 */
       
   250 void CCmdReqSwpChange::DoCancel()
       
   251 	{
       
   252 	iSsmStateManager.RequestSwpChangeCancel();
       
   253 	}
       
   254 
       
   255 /**
       
   256 default constructor.
       
   257 */
       
   258 CCmdReqSwpChange::CCmdReqSwpChange()
       
   259 	: iSwpInfo(0,0)
       
   260 	{
       
   261 	}
       
   262 
       
   263 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   264 /**
       
   265 Overloaded constructor.
       
   266 @param aSeverity The severity of the command
       
   267 @param aExecutionBehaviour The execution behaviour of the command
       
   268 @param aSwpInfo System wide property settings
       
   269 @param aPriority The priority of the command in the list
       
   270 */
       
   271 CCmdReqSwpChange::CCmdReqSwpChange(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TSsmSwp aSwpInfo, const TUint16 aPriority)
       
   272 	: CSsmDeferrableCommand(aSeverity, aExecutionBehaviour, aPriority), iSwpInfo(aSwpInfo)
       
   273 	{
       
   274 	}
       
   275 #endif
       
   276 
       
   277 /**
       
   278 Overloaded constructor.
       
   279 @param aSeverity The severity of the command
       
   280 @param aExecutionBehaviour The execution behaviour of the command
       
   281 @param aSwpInfo System wide property settings
       
   282 */
       
   283 CCmdReqSwpChange::CCmdReqSwpChange(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TSsmSwp aSwpInfo)
       
   284 	: CSsmDeferrableCommand(aSeverity, aExecutionBehaviour), iSwpInfo(aSwpInfo)
       
   285 	{
       
   286 	
       
   287 	}
       
   288 
       
   289 /**
       
   290 Connect to RSsmStateManager and validate the commands data.
       
   291 */
       
   292 void CCmdReqSwpChange::ConstructL()
       
   293 	{
       
   294 	ValidateL();
       
   295 	}
       
   296 
       
   297 /**
       
   298 Constructs the object through read stream.
       
   299 @param aReadStream A read stream containing BIC data
       
   300 */
       
   301 void CCmdReqSwpChange::ConstructL(RReadStream& aReadStream)
       
   302 	{
       
   303 	InternalizeL(aReadStream);
       
   304 	ConstructL();	// connect to RSsmStateManager and validate the data
       
   305 	}
       
   306 
       
   307 /**
       
   308 Constructs an object from resource file.
       
   309 @param aCommandParameters Object data from a resource file
       
   310 */
       
   311 void CCmdReqSwpChange::ConstructL(TSsmCommandParameters& aCommandParameters)
       
   312 	{
       
   313 	RResourceReader& reader = aCommandParameters.MainReader();
       
   314 	const TSsmCommandType type = static_cast<TSsmCommandType>(reader.ReadInt16L());
       
   315 	SSMLOGLEAVEIFFALSE(type == Type(), KErrNotSupported);
       
   316 	const TInt version = reader.ReadInt16L();
       
   317 	SSMLOGLEAVEIFFALSE(__COMPARE_VERSION(version, CCmdReqSwpChange::MaxSupportedVersion()), KErrNotSupported);
       
   318 	iSeverity = static_cast<TCmdErrorSeverity>(reader.ReadInt16L());
       
   319 	iExecutionBehaviour = static_cast<TSsmExecutionBehaviour>(reader.ReadUint8L());
       
   320 	const TUint key = reader.ReadUint32L();
       
   321 	const TInt value = reader.ReadInt32L();
       
   322 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   323 	iPriority = (version > ECmdReqSwPropertyInitialVersion) ? reader.ReadUint16L() : KDefaultCommandPriority;
       
   324 #endif
       
   325 	TSsmSwp swpInfo(key, value);
       
   326 	iSwpInfo = swpInfo;
       
   327 
       
   328 	ConstructL();	// connect to RSsmStateManager and validate the data
       
   329 	}
       
   330