uifw/AknGlobalUI/AknCapServer/src/ecompluginnotifier.cpp
author William Roberts <williamr@symbian.org>
Wed, 10 Nov 2010 12:08:34 +0000
branchRCL_3
changeset 76 5c9f0ba5102a
parent 0 2f259fa3e83a
permissions -rw-r--r--
Improve debug tracing of AknGlobalNote::StartL - Bug 2673
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
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/*
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* Copyright (c) 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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*
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*/
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/*
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* ============================================================================
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* TODO: Appropriate header needs to go here
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* ============================================================================
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*/
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#include <ecompluginnotifier.h>
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#include <coemain.h>
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EXPORT_C TEComPluginInfo::TEComPluginInfo(const TUid& aUid, const TInt aVersion, const TDriveUnit& aDrive)
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: iUid(aUid), iVersion(aVersion), iDrive(aDrive)
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	{
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	}
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CEComPluginNotifier::CEComPluginNotifier(const TUid& aInterfaceId, TCallBack& aCallBack)
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:CActive(EActivePriorityDefault), iInterfaceId(aInterfaceId), iCallBack(aCallBack)
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	{
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	// TODO: What happens if this fails?
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	CActiveScheduler::Add(this);
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	}
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void CEComPluginNotifier::ConstructL()
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	{
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	iEComSession = &REComSession::OpenL();
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	}
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CEComPluginNotifier::~CEComPluginNotifier()
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	{
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	Cancel();
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	if (iEComSession)
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		{
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		iEComSession->Close();
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		iEComSession = NULL;
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		}
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	iPreviousPlugins.Reset();
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	}
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EXPORT_C CEComPluginNotifier* CEComPluginNotifier::NewL(const TUid& iInterfaceId, TCallBack& aCallBack)
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	{
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	CEComPluginNotifier* self = CEComPluginNotifier::NewLC(iInterfaceId, aCallBack);
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	CleanupStack::Pop(self);
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	return self;
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	}
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EXPORT_C CEComPluginNotifier* CEComPluginNotifier::NewLC(const TUid& iInterfaceId, TCallBack& aCallBack)
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	{
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	CEComPluginNotifier* self = new (ELeave) CEComPluginNotifier(iInterfaceId, aCallBack);
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	CleanupStack::PushL(self);
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	self->ConstructL();
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	return self;
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	}
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EXPORT_C void CEComPluginNotifier::Start()
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	{
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	// Load initial list of plugins for the UID
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	if(iInterfaceId.iUid != 0)
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		EComPluginUtils::GetInfoArrayL(iInterfaceId, iPreviousPlugins);
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	if (!IsActive())
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		{
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		iEComSession->NotifyOnChange(iStatus);
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		SetActive();
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		}
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	}
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void CEComPluginNotifier::RunL()
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	{
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	// TODO: Should the client be notified if there was an error?
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	if (iStatus.Int() == KErrNone )
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		{
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		if(iInterfaceId.iUid == 0)
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			{
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			RunCallBack();
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			}
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		else
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			{
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			TRAP_IGNORE(CheckForEComPluginChangeL())
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			}
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		// TODO: Should this be outside the if? What if there was a connection error?
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		Start();
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		}
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	}
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void CEComPluginNotifier::DoCancel()
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	{
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	iEComSession->CancelNotifyOnChange(iStatus);
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	}
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   114
	
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   115
	
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void CEComPluginNotifier::CheckForEComPluginChangeL()
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	{
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	// TODO: Deal with errors here
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	REComPluginInfoArray newPlugins;
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	EComPluginUtils::GetInfoArrayL(iInterfaceId, newPlugins);
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   121
	
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	TBool pluginsChanged = EFalse;
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   123
	
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	TInt prevCount = iPreviousPlugins.Count();
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	TInt newCount = newPlugins.Count();
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   126
	
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	if(newCount != prevCount)
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		{
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		pluginsChanged = ETrue;
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		}
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	else
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		{
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		while(prevCount>0)
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			{
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			prevCount--;
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			TUid prevUid = (iPreviousPlugins[prevCount]).iUid;
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			TInt prevVer = (iPreviousPlugins[prevCount]).iVersion;
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			TBool found = EFalse;
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			newCount = newPlugins.Count();
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			while(newCount>0)
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				{
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				newCount--;
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				TUid newUid = (newPlugins[newCount]).iUid;
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				TInt newVer = (newPlugins[newCount]).iVersion;
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				if(prevUid == newUid && prevVer == newVer)
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					{
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					found = ETrue;
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					}
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				}
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			if(!found)
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				{
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				pluginsChanged = ETrue;
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				break;
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				}
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			}
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		}
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   160
	
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	if(pluginsChanged)
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		{
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		RunCallBack();
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		}
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   165
	
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	iPreviousPlugins.Reset();
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	iPreviousPlugins = newPlugins;
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	}
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   169
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   170
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void CEComPluginNotifier::RunCallBack()
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	{
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	(iCallBack.iFunction)(iCallBack.iPtr);
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	}
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   176
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// a kind of cleanup item for ecom info array
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NONSHARABLE_CLASS(CCleanupEComArray) : public CBase
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    {
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public:
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    ~CCleanupEComArray()
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        {
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        iArray.ResetAndDestroy();
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        iArray.Close();
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        }
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    RImplInfoPtrArray iArray;
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    };
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/**
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 * Reusable utility functions from here, exported as static functions
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 * of CEComPluginUtils
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 **/ 
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EXPORT_C TInt EComPluginUtils::GetInfoArrayL(const TUid aInterfaceId, REComPluginInfoArray& aReturnArray)
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	{
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	CCleanupEComArray* plugins = new (ELeave) CCleanupEComArray;
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	CleanupStack::PushL(plugins);
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	REComSession::ListImplementationsL(aInterfaceId, plugins->iArray);
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	CreateInfoArray(plugins->iArray, aReturnArray);
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	CleanupStack::PopAndDestroy(plugins);
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	return KErrNone;
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	}
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   203
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   204
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EXPORT_C TInt EComPluginUtils::CreateInfoArray(const RImplInfoPtrArray aEComArray, REComPluginInfoArray& aReturnArray)
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	{
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	for(TInt i=0; i<aEComArray.Count(); i++)
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		{
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		TUid uid = (aEComArray[i])->ImplementationUid();
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		TInt ver = (aEComArray[i])->Version();
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		TDriveUnit drive = (aEComArray[i])->Drive();
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		TEComPluginInfo info(uid, ver, drive);
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		aReturnArray.Append(info);
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		}
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	return KErrNone;
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	}