author | William Roberts <williamr@symbian.org> |
Fri, 23 Jul 2010 16:09:54 +0100 | |
branch | GCC_SURGE |
changeset 47 | d7383dba13ba |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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// Copyright (c) 1997-2009 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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// The implementation of a some classes |
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// to be provided by ECom. |
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// 1. Using the CExampleInterface class as a base. |
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// |
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// |
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|
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#include "Interface.h" |
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#include "ImplementationProxy.h" |
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#include "ExampleResolver.h" |
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#include "TestUtilities.h" // For __FILE__LINE__ |
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|
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// ____________________________________________________________________________ |
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// |
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/** Intended usage: This class implements the functionality promised by |
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the CExampleInterface defintion class. It does little apart from provides a test instance |
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which may be retrieved and run for testing purposes. |
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Its resolution is based upon its registered default data string that |
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advertises this class as being able to handle 'text\wml' data. |
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@since 7.0 |
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*/ |
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class CImplementationClassOne : public CExampleInterface |
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{ |
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// Methods |
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public: |
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/** |
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@fn NewL(TAny* aInitParams) |
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Intended Usage : Standardised safe construction which leaves nothing the cleanup stack. |
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Error Condition : Leaves with error code. |
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@leave KErrNoMemory. |
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@since 7.0 |
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@param aInitParams The parameter struct used for initialising this object |
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@return CImplementationClassOne* The class instance. |
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@pre None |
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@post CImplementationClassOne has been constructed, |
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and initialised. |
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*/ |
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static CImplementationClassOne* NewL(TAny* aInitParams); |
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|
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/** |
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@fn ~CImplementationClassOne() |
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Intended Usage : Default Destructor |
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Error Condition : None |
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@since 7.0 |
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@pre CImplementationClassOne has been constructed |
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@post CImplementationClassOne has been completely destroyed. |
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*/ |
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virtual ~CImplementationClassOne(); |
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|
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/** |
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@fn DoMethodL() |
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Intended Usage : Overload of the pure interface method |
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Representative of a method provided on |
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the interface by the interface definer. |
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Error Condition : Leaves with an error code. |
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@leave KErrNoMemory, KErrNotSupported. |
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@since 7.0 |
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@return None |
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@pre CImplementationClassOne has been constructed |
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@post Unspecified |
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*/ |
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void DoMethodL(); |
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|
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/** |
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@fn FireAndForget() |
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Intended Usage : Overload of the pure interface method |
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asynchronous function which |
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an interface definer could specify. |
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It allows the client to call the function in the knowledge |
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that the object will commit suicide when the |
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function completes. |
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Error Condition : None. |
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@since 7.0 |
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@return TInt KErrNone for success. |
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@pre CImplementationClassOne has been constructed |
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@post Unspecified |
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*/ |
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TInt FireAndForget(); |
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|
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/** |
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@fn ImplId() |
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Intended Usage : To verify the object returned by ECOM. |
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Error Condition : None. |
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@since 7.0s |
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@return TUid (ECOM's Implementation Uid for this class.) |
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@pre CImplementationClassThree has been constructed |
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@post Unspecified |
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*/ |
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TUid ImplId(); |
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private: |
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/** |
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@fn CImplementationClassOne() |
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Intended Usage : Default Constructor : usable only by derived classes |
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Error Condition : None |
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@since 7.0 |
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@pre None |
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@post CImplementationClassOne has been constructed |
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*/ |
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CImplementationClassOne(); |
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|
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/** |
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@fn ConstructL(TAny* aInitParams) |
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Intended Usage : Completes the safe construction of the CImplementationClassOne object |
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Error Condition : Leaves with the error code. |
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@leave KErrNoMemory. |
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@since 7.0 |
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@param aInitParams The parameter struct used for initialising this object |
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@pre CImplementationClassOne has been constructed |
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@post CImplementationClassOne has been fully initialised. |
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*/ |
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void ConstructL(TAny* aInitParams); |
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|
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// Provide the CActive overloads |
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void RunL(); |
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void DoCancel(); |
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TInt RunError(TInt aError); |
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|
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private: |
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/** A place for allocating some memory in the ConstructL */ |
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HBufC* iInternalDescriptor; |
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/** An int to be stored in TLS to test its useage */ |
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TInt iTLSInt; |
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|
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}; // End of CImplementationClassOne definition |
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|
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// __________________________________________________________________________ |
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// Implementation |
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|
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CImplementationClassOne* CImplementationClassOne::NewL(TAny* aInitParams) |
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// Intended Usage : Safe construction which leaves nothing upon the cleanup stack |
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// Error Condition : Will leave with an appropriate error code |
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// Dependencies : CBase |
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// @param " " |
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// @return CImplementationClassOne* a pointer to the fully instantiated CImplementationClassOne object |
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// @pre None |
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// @post The object has been fully instantiated |
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// Static member |
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{ |
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CImplementationClassOne* self=new(ELeave) CImplementationClassOne(); // calls c'tor |
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CleanupStack::PushL(self); // Make the construction safe by using the cleanup stack |
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self->ConstructL(aInitParams); // Complete the 'construction'. |
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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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CImplementationClassOne::~CImplementationClassOne() |
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// Default virtual d'tor |
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{ |
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delete iInternalDescriptor; |
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} |
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|
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CImplementationClassOne::CImplementationClassOne() |
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// Default c'tor for use by derived and |
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// static construction methods only |
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: CExampleInterface() |
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{ |
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// Deliberately do nothing here : See ConstructL() for initialisation completion. |
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} |
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|
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void CImplementationClassOne::ConstructL(TAny* aInitParams) |
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// Intended Usage : Safely complete the initialization of the constructed object |
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// Error Condition : Will leave with an appropriate error code |
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// Dependencies : CBase |
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// @return void |
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// @pre CImplementationClassOne has been constructed |
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// @post The CImplementationClassOne object has been fully instantiated |
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// |
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{ |
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TExampleInterfaceInitParams* params = REINTERPRET_CAST(TExampleInterfaceInitParams*, |
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aInitParams); |
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if(params->descriptor) |
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iInternalDescriptor = params->descriptor->AllocL(); |
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|
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Dll::SetTls(&iTLSInt); |
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} |
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|
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void CImplementationClassOne::DoMethodL() |
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{ |
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// Access TLS to ensure it has been set properly |
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REINTERPRET_CAST(TInt*, Dll::Tls()); |
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} |
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|
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TInt CImplementationClassOne::FireAndForget() |
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{ |
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TRAPD(error,DoMethodL()); |
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return error; // Always KErrNotSupported |
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} |
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|
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// Provide the CActive overloads |
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void CImplementationClassOne::RunL() |
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{ |
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// Do nothing : should never be called |
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__ASSERT_DEBUG(EFalse,User::Invariant()); |
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} |
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|
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void CImplementationClassOne::DoCancel() |
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{ |
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// Do nothing |
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} |
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|
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TInt CImplementationClassOne::RunError(TInt aError) |
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{ |
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return aError; |
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} |
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TUid CImplementationClassOne::ImplId() |
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{ |
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TUid idVal = {0x10009DC3}; |
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return (idVal); |
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} |
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|
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// ____________________________________________________________________________ |
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// |
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/** Intended usage: This class implements the functionality promised by |
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the CExampleInterface defintion class. It does little apart from provides a test instance |
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which may be retrieved and run for testing purposes. |
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Its resolution is based upon its registered default data string that |
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advertises this class as being able to handle 'text\*' data. |
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I.e. it should be 'found' by wildcard matching for any text handling type. |
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@since 7.0 |
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|
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*/ |
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class CImplementationClassTwo : public CExampleInterface |
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{ |
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// Methods |
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public: |
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/** |
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@fn NewL(TAny* aParams) |
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Intended Usage : Standardised safe construction which leaves nothing the cleanup stack. |
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Error Condition : Leaves with error code. |
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@leave KErrNoMemory. |
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@since 7.0 |
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@return CImplementationClassTwo* The class instance. |
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@pre None |
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@post CImplementationClassTwo has been constructed, |
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and initialised. |
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*/ |
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static CImplementationClassTwo* NewL(TAny* aParams); |
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|
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/** |
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@fn ~CImplementationClassTwo() |
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Intended Usage : Default Destructor |
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Error Condition : None |
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@since 7.0 |
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@pre CImplementationClassTwo has been constructed |
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@post CImplementationClassTwo has been completely destroyed. |
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*/ |
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virtual ~CImplementationClassTwo(); |
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|
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/** |
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@fn DoMethodL() |
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Intended Usage : Overload of the pure interface method |
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Representative of a method provided on |
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the interface by the interface definer. |
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Error Condition : Leaves with an error code. |
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@leave KErrNoMemory, KErrNotSupported. |
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@since 7.0 |
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@return None |
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@pre CImplementationClassTwo has been constructed |
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@post Unspecified |
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*/ |
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void DoMethodL(); |
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|
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/** |
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@fn FireAndForget() |
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Intended Usage : Overload of the pure interface method |
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asynchronous function which |
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an interface definer could specify. |
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It allows the client to call the function in the knowledge |
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that the object will commit suicide when the |
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function completes. |
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Error Condition : None. |
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@since 7.0 |
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@return TInt KErrNone for success. |
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@pre CImplementationClassTwo has been constructed |
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@post Unspecified |
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*/ |
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TInt FireAndForget(); |
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|
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/** |
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@fn ImplId() |
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Intended Usage : To verify the object returned by ECOM. |
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Error Condition : None. |
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@since 7.0s |
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@return TUid (ECOM's Implementation Uid for this class.) |
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@pre CImplementationClassThree has been constructed |
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@post Unspecified |
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*/ |
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TUid ImplId(); |
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|
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private: |
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/** |
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@fn CImplementationClassTwo() |
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Intended Usage : Default Constructor : usable only by derived classes |
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Error Condition : None |
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@since 7.0 |
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@pre None |
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@post CImplementationClassTwo has been constructed |
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*/ |
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CImplementationClassTwo(); |
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|
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/** |
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@fn ConstructL() |
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Intended Usage : Completes the safe construction of the CImplementationClassTwo object |
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Error Condition : Leaves with the error code. |
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@leave KErrNoMemory. |
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@since 7.0 |
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@pre CImplementationClassTwo has been constructed |
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@post CImplementationClassTwo has been fully initialised. |
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*/ |
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void ConstructL(); |
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|
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// Provide the CActive overloads |
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void RunL(); |
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void DoCancel(); |
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TInt RunError(TInt aError); |
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}; // End of CImplementationClassTwo definition |
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|
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// __________________________________________________________________________ |
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// Implementation |
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|
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CImplementationClassTwo* CImplementationClassTwo::NewL(TAny* /* aParams */) |
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// Intended Usage : Safe construction which leaves nothing upon the cleanup stack |
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// Error Condition : Will leave with an appropriate error code |
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// Dependencies : CBase |
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// @param " " |
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// @return CImplementationClassTwo* a pointer to the fully instantiated CImplementationClassTwo object |
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// @pre None |
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// @post The object has been fully instantiated |
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// Static member |
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{ |
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CImplementationClassTwo* self=new(ELeave) CImplementationClassTwo(); // calls c'tor |
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CleanupStack::PushL(self); // Make the construction safe by using the cleanup stack |
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self->ConstructL(); // Complete the 'construction'. |
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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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CImplementationClassTwo::~CImplementationClassTwo() |
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// Default virtual d'tor |
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{ |
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// Do Nothing |
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} |
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|
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CImplementationClassTwo::CImplementationClassTwo() |
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// Default c'tor for use by derived and |
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// static construction methods only |
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: CExampleInterface() |
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{ |
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CActiveScheduler::Add(this); |
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} |
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|
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void CImplementationClassTwo::ConstructL() |
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// Intended Usage : Safely complete the initialization of the constructed object |
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// Error Condition : Will leave with an appropriate error code |
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// Dependencies : CBase |
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// @return void |
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// @pre CImplementationClassTwo has been constructed |
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// @post The CImplementationClassTwo object has been fully instantiated |
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// |
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{ |
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// Do Nothing |
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} |
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|
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void CImplementationClassTwo::DoMethodL() |
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{ |
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// Do nothing |
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} |
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|
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TInt CImplementationClassTwo::FireAndForget() |
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{ |
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TInt error = KErrNone; |
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TRAP(error,DoMethodL()); |
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if(!IsActive()) |
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{ |
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SetActive(); |
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iStatus = KRequestPending; |
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TRequestStatus* status = &iStatus; |
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User::RequestComplete(status, KErrNone); |
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} |
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return error; |
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} |
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|
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// Provide the CActive overloads |
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void CImplementationClassTwo::RunL() |
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{ |
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delete this; // AAARGH : Scary!!!! |
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} |
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|
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void CImplementationClassTwo::DoCancel() |
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404 |
{ |
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// Do nothing |
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} |
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|
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TInt CImplementationClassTwo::RunError(TInt aError) |
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{ |
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return aError; |
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} |
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|
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TUid CImplementationClassTwo::ImplId() |
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{ |
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TUid idVal = {0x10009DC4}; |
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return (idVal); |
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} |
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|
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// __________________________________________________________________________ |
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// Exported proxy for instantiation method resolution |
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// Define the interface UIDs |
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const TImplementationProxy ImplementationTable[] = |
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{ |
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IMPLEMENTATION_PROXY_ENTRY(0x10009DC3, CImplementationClassOne::NewL), |
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IMPLEMENTATION_PROXY_ENTRY(0x10009DC4, CImplementationClassTwo::NewL), |
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IMPLEMENTATION_PROXY_ENTRY(0x10009DD0, CExampleResolver::NewL) |
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}; |
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EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount) |
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{ |
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aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy); |
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return ImplementationTable; |
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} |
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