// Copyright (c) 1997-2009 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:

//

#ifndef __COEVWMAN_H__

#define __COEVWMAN_H__

#include <viewcli.h>	// class MVwsSessionWrapperObserver

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <vwsdefpartner.h>

#endif

class CCoeAppUi;

class CCoeEnv;

class MCoeView;

class MCoeViewDeactivationObserver;

class MCoeViewActivationObserver;

class CCoeControl;

class CCoeView;

class MCoeViewObserver;

class CCoeViewObserver;

class CVwsSessionWrapper;

/**

 * The CCoeViewManager class provides Cone's view management and implements the view specific functionality accessed

 * through the CCoeAppUi API.

 *

 */

class CCoeViewManager : public CBase, public MVwsSessionWrapperObserver

	{

public:

	static CCoeViewManager* NewL(CCoeEnv& aCoeEnv,CCoeAppUi& aAppUi,CCoeAppUi* aPreviousAppUi);

	~CCoeViewManager();

private:

	CCoeViewManager(CCoeEnv& aCoeEnv,CCoeAppUi& aAppUi,CCoeAppUi* aPreviousAppUi);

	void ConstructL();

public: // view activation

	void ActivateViewL(const TVwsViewId& aViewId, TBool aActivatingTopView = EFalse);

	void ActivateViewL(const TVwsViewId& aViewId,const TUid& aCustomMessageId,const TDesC8& aCustomMessage, TBool aActivatingTopView = EFalse);

	void ActivateTopViewL();

	void DeactivateActiveViewL();

	void DeactivateActiveViewIfOwnerMatchL();

	void CreateActivateViewEventL(const TVwsViewId& aViewId,const TUid& aCustomMessageId,const TDesC8& aCustomMessage);

public: // view registration

	void RegisterViewL(MCoeView& aView);

	void DeregisterView(const MCoeView& aView);

	void RegisterApplicationViewL(const TUid& aAppUid);			

	void DeregisterApplicationView();

	void CheckInitializeViewsL(const TUid& aAppUid);

	void SetDefaultViewL(const MCoeView& aView);

	void SetApplicationViewAsDefaultL();

	TInt GetDefaultViewId(TVwsViewId& aViewId) const;

	TInt GetActiveViewId(TVwsViewId& aViewId) const;

public: // view switch observation

	void AddViewDeactivationObserverL(MCoeViewDeactivationObserver* aViewDeactivationObserver);

	void RemoveViewDeactivationObserver(MCoeViewDeactivationObserver* aViewDeactivationObserver);

	void NotifyNextDeactivation(const TVwsViewId& aViewId, MCoeViewDeactivationObserver& aViewDeactivationObserver);

	void NotifyNextDeactivation(MCoeViewDeactivationObserver& aViewDeactivationObserver);

	void AddViewActivationObserverL(MCoeViewActivationObserver* aViewActivationObserver);

	void RemoveViewActivationObserver(MCoeViewActivationObserver* aViewActivationObserver);

	void NotifyNextActivation(const TVwsViewId& aViewId, MCoeViewActivationObserver& aViewActivationObserver);

	void NotifyNextActivation(MCoeViewActivationObserver& aViewActivationObserver);

	void AddViewObserverL(MCoeViewObserver* aViewObserver);

	void RemoveViewObserver(MCoeViewObserver* aViewObserver);

public: // View session configuration

	TInt EnableExternalViewSwitches(TBool aEnable);

private: // From MVwsSessionWrapperObserver.

	void HandleViewEventL(const TVwsViewEvent& aEvent);

public: // view related interfaces.

	void DoActivationL(const TVwsViewId& aViewId,const TVwsViewId& aPreviousViewId,const TUid& aCustomMessageId,TInt aCustomMessageLength);

	void DoDeactivation(const TVwsViewId& aViewId, const TVwsViewId& aActiveViewId, const TVwsViewEvent::TVwsViewEventType aType);

	void HandleViewDeactivationNotification(const TVwsViewId& aViewId,const TVwsViewId& aActiveViewId);

	void HandleViewActivationNotification(const TVwsViewId& aActiveViewId,const TVwsViewId& aViewToDeactivatedId);

	TVwsViewIdAndMessage HandleScreenDeviceChangedL(const TVwsViewId& aViewId);

	TInt ViewIndex(const MCoeView& aView) const;

	TInt ViewIndex(const TVwsViewId& aViewId) const;

 	void SetSystemDefaultViewL(const TVwsViewId& aViewId,TInt aMode);

	void SetSystemDefaultViewL(const TVwsViewId& aViewId);

 	TBool IsViewConstructed(const TVwsViewId& aViewId) const;

	void GetSystemDefaultViewL(TVwsViewId& aViewId);

	TBool CheckSourceOfViewSwitchL(const TSecurityPolicy& aSecurityPolicy,const char* aDiagnostic) const;

	TInt GetTopViewId(TVwsViewId& aViewId) const;

	void SetCustomControl(const TInt aCustomControl);

	void SetWindowGroupOrdinal(const TInt aWindowGroupOrdinal);

	void UpdateViewServerBackgroundColor(const TRgb& aBgColor);

private:

	friend class CTestDriver;

private:

	void CompleteActivation(TInt aActiveViewIndex,const TVwsViewId& aViewId,const TVwsViewId& aPreviousViewId);

private:

	CCoeAppUi& iAppUi;

	CCoeEnv& iCoeEnv;

	TPtrC8 iCustomMessage;

	CCoeAppUi* iPreviousAppUi;

	TBool iRegisteredApplicationView;

	CCoeViewObserver* iViewObserver;

	CArrayPtrFlat<CCoeView> iViewArray;

	CVwsSessionWrapper* iVwsSession;

	CArrayPtrFlat<MCoeViewDeactivationObserver> iViewDeactivationObserverArray;

	MCoeViewDeactivationObserver* iNextViewDeactivationObserver;

	CArrayPtrFlat<MCoeViewActivationObserver> iViewActivationObserverArray;

	MCoeViewActivationObserver* iNextViewActivationObserver;

	CArrayPtrFlat<MCoeViewObserver> iViewObserverArray;

	TInt iActiveViewIndex;

	TVwsViewId iDefaultViewId;

	TVwsViewId iLastActiveViewId;

	TVwsViewId iActiveViewId;

	TVwsViewId iApplicationViewId;

	TBool iActivatingTopView;

	TVwsViewId iActivatingViewId;

	TInt iCustomControl;

	TInt iWindowGroupOrdinal;

	};

#endif // __COEVWMAN_H__