sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __LOGVIEWWINDOW_H__
sl@0: #define __LOGVIEWWINDOW_H__
sl@0: 
sl@0: // System includes
sl@0: #include <e32base.h>
sl@0: 
sl@0: // User includes
sl@0: #include <logwrap.h>
sl@0: #include "LogServShared.h"
sl@0: #include "LogViewWindowFetcher.h"
sl@0: #include "LogViewWindowLockObserver.h"
sl@0: #include "LogViewChangeObserverInternal.h"
sl@0: 
sl@0: // Classes referenced
sl@0: class CLogClient;
sl@0: class CLogPackage;
sl@0: class CLogChangeDefinition;
sl@0: class CLogFilterList;
sl@0: class MLogViewChangeObserver;
sl@0: class CLogViewSetupClientOp;
sl@0: class CLogViewWindowFetcher;
sl@0: class CLogViewWindowLockObserver;
sl@0: class CLogViewWindowChangeObserver;
sl@0: 
sl@0: 
sl@0: /////////////////////////////////////////////////////////////////////////////////////////
sl@0: // -----> CLogViewWindow (header)
sl@0: /////////////////////////////////////////////////////////////////////////////////////////
sl@0: NONSHARABLE_CLASS(CLogViewWindow) : public CLogActive, public MLogViewChangeObserverInternal, public MLogViewWindowFetcherObserver, public MLogViewWindowLockObserver
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: 	{
sl@0: public:
sl@0: 	CLogViewWindow(RLogSession& aSession, TLogViewId aViewId, TInt aWindowSize, MLogViewChangeObserver* aCascadeObserver, TInt aPriority);
sl@0: 	~CLogViewWindow();
sl@0: 	void ConstructL(CLogPackage& aPackage);
sl@0: 
sl@0: public:
sl@0: 
sl@0: 	/**
sl@0: 	 * Prepare the view
sl@0: 	 */
sl@0: 	TInt Setup(const CLogFilterList& aFilterList, TInt aParam, TLogFilterConstructionType aFilterConstructionType);
sl@0: 
sl@0: 	/**
sl@0: 	 * Move the view position
sl@0: 	 */
sl@0: 	TBool NavigateL(TLogNavigation aNavigate, TRequestStatus& aStatus);
sl@0: 
sl@0: 	/**
sl@0: 	 * Remove the specified log event from the window if its present
sl@0: 	 */
sl@0: 	void RemoveFromWindowIfPresentL(TLogId aId);
sl@0: 
sl@0: 	/**
sl@0: 	 * Access the change observer (needed to construct the view)
sl@0: 	 */
sl@0: 	MLogViewChangeObserverInternal& ChangeObserver();
sl@0: 
sl@0: 	/**
sl@0: 	 * Access the event at the current position
sl@0: 	 */
sl@0: 	const CLogEvent& CurrsorEvent() const;
sl@0: 
sl@0: 	/** gets iViewRecordCount */
sl@0: 	inline TInt ViewRecordCount() const;
sl@0: 
sl@0: private: // FROM MLogViewWindowLockObserver
sl@0: 	void HandleWindowLockStatusChangeL(TLogViewLockStatus aStatus);
sl@0: 
sl@0: private: // FROM MLogViewWindowFetcherObserver
sl@0: 	void HandleFetchedWindowItemL(TInt aItemIndex, CLogEvent* aEvent);
sl@0: 
sl@0: public: // FROM MLogViewChangeObserver
sl@0: 	void HandleLogViewChangeEventAddedL(TLogId aId,   TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount);
sl@0: 	void HandleLogViewChangeEventChangedL(TLogId aId, TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount);
sl@0: 	void HandleLogViewChangeEventDeletedL(TLogId aId, TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount);
sl@0: 
sl@0: private: // FROM MLogViewChangeObserverInternal
sl@0: 	void HandleLogViewChangeEventLogClearedL();
sl@0: 
sl@0: private: // FROM CLogActive
sl@0: 	void DoRunL();
sl@0: 	void DoCancel();
sl@0: 	void DoComplete(TInt& aComplete);
sl@0: 
sl@0: private:
sl@0: 	enum TWindowState
sl@0: 		{
sl@0: 		EStateIdle = 0,
sl@0: 		EStateFetchingWindow,
sl@0: 		EStateProcessingWindow,
sl@0: 		EStateNavigateWithinWindow,
sl@0: 		EStateLocked
sl@0: 		};
sl@0: 
sl@0: private:
sl@0: 	void StateHandleWindowFetchStarting();
sl@0: 	void StateHandleWindowFetchedL();
sl@0: 	void StateHandleNavigation();
sl@0: 
sl@0: private:
sl@0: 	void CompleteRequest(TInt aCompletionCode = KErrNone);
sl@0: 	void CalculateWindowForCursorPosition(TInt aCursorPosition, TLogWindow& aWindow) const;
sl@0: 	void Reset();
sl@0: 	void SilentCancel();
sl@0: 	void RefetchL(const TLogWindow& aWindow, TInt aCursor);
sl@0: 	void ChangeState(TWindowState aNewState);
sl@0: 	void RemoveEvent(TInt aIndex);
sl@0: 	TInt CalculateCursorPosition(TLogNavigation aNavigate) const;
sl@0: 	TInt FindEvent(TLogId aId);
sl@0: 	TInt FindAndRemoveEvent(TLogId aId);
sl@0: 
sl@0: private:
sl@0: 	RLogSession& iSession;
sl@0: 	const TLogViewId iViewId;
sl@0: 	const TInt iWindowSize;
sl@0: 	MLogViewChangeObserver* iCascadeObserver;
sl@0: 	RPointerArray<CLogEvent> iEvents;
sl@0: 
sl@0: 	TWindowState iState;
sl@0: 	TLogWindowAndCursor iWindow;
sl@0: 	TInt iViewRecordCount;
sl@0: 
sl@0: 	CLogViewSetupClientOp* iWindowPreparer;
sl@0: 	CLogViewWindowFetcher* iWindowFetcher;
sl@0: 	CLogViewWindowLockObserver* iWindowLockObserver;
sl@0: 	CLogViewWindowChangeObserver* iWindowChangeObserver;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: inline 
sl@0: TInt CLogViewWindow::ViewRecordCount() const
sl@0: 	{
sl@0: 	return iViewRecordCount;
sl@0: 	}
sl@0: 
sl@0: #endif