/*+
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* Copyright (c) 2003 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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#ifndef CDLSERVER_H+
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#define CDLSERVER_H+
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+
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// CDL server classes+
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+
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#include <e32base.h>+
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#include "CdlClientServer.h"+
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#include "CdlClientServerStd.h"+
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#include "CdlRefs.h"+
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#include "CdlDllWatcher.h"+
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+
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class TDriveUnit;+
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+
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enum TCdlPanic+
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	{+
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	// client panics+
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	EPanicBadDescriptor,+
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	EPanicIllegalFunction,+
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	EPanicNotifyActive,+
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	EPanicNoCustomisationRequested,+
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	EPanicBufRequestedWithoutSetup,+
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	EPanicParamOutOfRange,+
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+
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	// server panics+
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	EServerPanicBase = 100,+
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	EPanicTDllListOpEqNullCurrent,+
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	EPanicTDllListOpLtNullCurrent,+
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	EPanicTDllListCurrentNullCurrent,+
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	EPanicTDllListNextNullCurrent,+
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	EPanicTDllListNextNullDirs,+
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	};+
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+
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void PanicClient(const RMessagePtr2& aMessage,TCdlPanic TCdlPanic);+
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void Panic(TCdlPanic TCdlPanic);+
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+
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+
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/**+
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* Timer used to shut down the server after 2 seconds with no clients.+
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*/+
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class CShutdown : public CTimer+
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	{+
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	enum {KCdlShutdownDelay=2000000};	// 2 seconds+
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public:+
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	CShutdown();+
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	void ConstructL();+
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	void Start();+
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private:+
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	void RunL();+
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	};+
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+
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+
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/**+
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* The CDL server.+
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* This maintains a watch on the available CDL DLLs. It also maintains the total global+
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* customisation state.+
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*/+
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class CCdlServer : public CServer2, MCdlDllsObserver+
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	{+
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public:+
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	static CServer2* NewLC();+
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	~CCdlServer();+
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	void AddSession();+
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	void DropSession();+
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	CCdlRefs* GetStateLC(const CCdlUids& aUids) const;+
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	void SetStateL(CCdlRefs* aState);+
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	const CCdlRefs& AllRefs() const;+
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	inline CCdlRefCollection* FileContentsLC(const TDesC& aFileName) { return iDllWatcher->FileContentsLC(aFileName); }+
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	TInt IsPluginInRom(const TDesC& aFileName, TBool& aIsInRom);+
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	TInt PluginDrive(const TDesC& aFileName, TDriveUnit& aDrive);+
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+
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private:+
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	CCdlServer();+
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	void ConstructL();+
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	CSession2* NewSessionL(const TVersion& aVersion,const RMessage2& aMessage) const;+
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	TInt RunError(TInt aError);+
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+
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private: // from MCdlDllsObserver+
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	void McdoPrepareForChangesL();+
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	void McdoFileAddedL(const TDesC& aFile);+
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	void McdoFileRemovedL(const TDesC& aFile);+
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	void McdoChangesCompleteL();+
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+
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private:+
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	TInt iSessionCount;+
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	// All the following are owned+
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	CShutdown iShutdown;+
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	CCdlEngineRef* iEngRef;+
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	CCdlRefs* iState;+
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	RFs iFs;+
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	CCdlDllsWatcherBase* iDllWatcher;+
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	CCdlRefs* iAllRefs;+
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	};+
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+
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+
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/**+
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* The CDL server's client session.+
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* This maintains a list of the UIDs that the client is interested in.+
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* Changes in available customisations and in the relevant global customisation state+
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* are sent to the client.+
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*/+
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class CCdlSession : public CSession2+
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	{+
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public:+
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	CCdlSession();+
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	void CreateL();+
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	void HandleCustChangeL(const CCdlUids& aUids);+
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	void HandleRefsChangeL();+
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private:+
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	~CCdlSession();+
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	CCdlServer& Server();+
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	void ServiceL(const RMessage2& aMessage);+
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	void RequestGetCustL(const RMessage2& aMessage);+
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	void GetCustL(const RMessage2& aMessage);+
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	void SetUidsToNotifyL(const RMessage2& aMessage);+
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	void NotifyChangeL(const RMessage2& aMessage);+
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	void CancelNotifyChangeL(const RMessage2& aMessage);+
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	void SetCustL(const RMessage2& aMessage);+
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	void GetRefsSizeL(const RMessage2& aMessage);+
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	void GetAllRefsSizeL(const RMessage2& aMessage);+
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	void GetNamesSizeL(const RMessage2& aMessage);+
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	void GetTempBufL(const RMessage2& aMessage);+
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	void IsPluginInRomL(const RMessage2& aMessage);+
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	void PluginDriveL(const RMessage2& aMessage);+
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	TBool NotifyPending() const;+
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	void NotifyCustChangeL();+
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	void WriteAndComplete(const RMessagePtr2& aMessage, TInt aParam, const TDesC8& aDes, TInt aCode = KErrNone);+
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	TInt ValidIntL(TInt aVal, TInt aMin, TInt aMax) const;+
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private:+
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	RMessagePtr2 iNotify;+
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	HBufC8* iSendingBuf;		//owned+
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	CCdlRefs* iSendingState;	//owned+
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	CCdlUids iUids;+
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	TBool iQueuedCustChange;	// is there a global customisation change waiting to be sent to the client?+
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	TBool iQueuedRefsChange;	// is there a refs list change waiting to be sent to the client?+
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	HBufC8* iTempBuf;			//owned+
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	};+
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+
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#endif+
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