1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef CXUIAPPLICATIONSTATE_H

    19 #define CXUIAPPLICATIONSTATE_H

    20 

    21 #include <QObject>

    22 #include "cxeerror.h"

    23 #include "cxuiapplicationframeworkmonitor.h"

    24 

    25 class CxuiApplication;

    26 class CxuiCaptureKeyHandler;

    27 class CxeSettings;

    28 class CxuiDocumentLoader;

    29 class CxuiErrorManager;

    30 class CxuiEventLog;

    31 

    32 

    33 /*!

    34 * @brief Class maintaining application overall state.

    35 */

    36 class CxuiApplicationState : public QObject

    37 {

    38     Q_OBJECT

    39     Q_ENUMS(State)

    40 

    41 public:

    42 

    43     enum State {

    44         Normal,

    45         Standby,

    46         Error,

    47         Background

    48     };

    49 

    50     CxuiApplicationState(CxuiApplication &application,

    51                          CxeSettings &settings,

    52                          CxuiCaptureKeyHandler &keyHandler,

    53                          CxuiDocumentLoader *documentLoader);

    54     ~CxuiApplicationState();

    55 

    56 

    57 public:

    58     State currentState() const;

    59 

    60 signals:

    61     void stateChanged(CxuiApplicationState::State newState,

    62                       CxuiApplicationState::State oldState);

    63 

    64 public slots:

    65     void startMonitoring();

    66     void handleApplicationError(CxeError::Id error);

    67     void enterStandby();

    68     void exitStandby();

    69 

    70 private slots:

    71     void handleForegroundStateChanged(CxuiApplicationFrameworkMonitor::ForegroundState state);

    72     void handleUsbMassMemoryModeChanged(bool active);

    73     void handleBatteryEmpty();

    74     void handleSevereError();

    75     void handleErrorCleared();

    76 

    77 private:

    78     void setState(State newState);

    79     void checkErrors();

    80 

    81 private:

    82     State mState;

    83     CxuiApplicationFrameworkMonitor *mApplicationMonitor;

    84     CxuiErrorManager *mErrorManager;

    85     CxuiEventLog *mEventLog;

    86 };

    87 

    88 #endif // CXUIAPPLICATIONSTATE_H