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examples/SysLibs/ECom/InterfaceClient/InterfaceClient.cpp

// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
//

#include <badesca.h>

#include <interface.h>

#include "CommonFramework.h"
#include "InterfaceClient.h"

// Utility clean up function
void CleanupEComArray(TAny* aArray);

// do the example
LOCAL_C void doExampleL()
    {
        _LIT(KText,"ECom client example\n\n");
        console->Printf(KText);

        TInterfaceClient client;
        client.GetDefaultL();
        client.GetBySpecificationL();
        client.GetByDiscoveryL();
        
        REComSession::FinalClose();
        }

void TInterfaceClient::GetDefaultL()
        {
        _LIT(KText,"Case 1: getting the default implementation\n");
        console->Printf(KText);

        // Get the default implementation and call its method
        CExampleInterface* ex1 = CExampleInterface::NewL();
        CleanupStack::PushL(ex1);
        TBuf<100> buf;
        ex1 -> DoMethodL(buf);
        CleanupStack::PopAndDestroy(); //ex1

        // Print results
        console -> Printf(buf);
        }

void TInterfaceClient::GetBySpecificationL()
        {
        _LIT(KText,"\nCase 2: getting an implementation by specification\n");
        console->Printf(KText);

        // Prepare data to pass to implementation
        CExampleInterface::TExampleInterfaceInitParams p;
        p.integer = 0;
        _LIT(KMsg1,"Data in value: %d\n");
        console -> Printf(KMsg1,p.integer);

        // Get the implementation that has a data identifier text/xml
        _LIT8(KSpec,"text/xml");
        CExampleInterface* ex1 = CExampleInterface::NewL(KSpec,p);
        CleanupStack::PushL(ex1);
        TBuf<100> buf;
        ex1 -> DoMethodL(buf);
        CleanupStack::PopAndDestroy(); //ex1

        // Print results
        console -> Printf(buf);
        _LIT(KMsg2,"Data out value: %d\n");
        console -> Printf(KMsg2,p.integer);
        }


void TInterfaceClient::GetByDiscoveryL()
        {
        _LIT(KText,"\nCase 3: getting all implementations\n");
        console->Printf(KText);

        // Read info about all implementations into infoArray
        RImplInfoPtrArray infoArray;
        // Note that a special cleanup function is required to reset and destroy
        // all items in the array, and then close it.
        TCleanupItem cleanup(CleanupEComArray, &infoArray);
        CleanupStack::PushL(cleanup);
        CExampleInterface::ListAllImplementationsL(infoArray);

        // Loop through each info for each implementation
        // and create and use each in turn
        CExampleInterface* ex;
        TBuf<255> buf;
        for (TInt i=0; i< infoArray.Count(); i++)
                {
                // Slice off first sub-section in the data section
                TPtrC8 type = infoArray[i]->DataType();
                type.Set(type.Left(type.Locate('|')));
                // Need to convert narrow descriptor to be wide in order to print it
                buf.Copy(type);
                console -> Printf(buf);
                console -> Printf(_L(": "));

                // Create object of type and call its function
                ex = CExampleInterface::NewL(type);
                CleanupStack::PushL(ex);
                ex -> DoMethodL(buf);
                CleanupStack::PopAndDestroy(); //ex

                // Print results
                console -> Printf(buf); 
                
                ex = NULL;
                buf.Zero();
                }

        // Clean up
        CleanupStack::PopAndDestroy(); //infoArray, results in a call to CleanupEComArray
        }

// CleanupEComArray function is used for cleanup support of locally declared arrays
void CleanupEComArray(TAny* aArray)
        {
        (static_cast<RImplInfoPtrArray*> (aArray))->ResetAndDestroy();
        (static_cast<RImplInfoPtrArray*> (aArray))->Close();
        }

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Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.