1 /*

     2 * Copyright (c) 2009 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:  Base class for all screensavers.

    15 *

    16 */

    17 

    18 #include "screensaver_p.h"

    19 

    20 /*!

    21     \class Screensaver

    22     \brief The private implementation of the Screensaver.

    23  */

    24 

    25 /*!

    26     Constructs a new ScreensaverPrivate with \a screensaverPublic.

    27  */

    28 ScreensaverPrivate::ScreensaverPrivate(Screensaver * const screensaverPublic) :

    29     m_q(screensaverPublic), mState(ScreensaverStateConstructed)

    30 {

    31 }

    32 

    33 /*!

    34     Destructs the class.

    35  */

    36 ScreensaverPrivate::~ScreensaverPrivate()

    37 {

    38 }

    39 

    40 /*!

    41     Return current state.

    42     \return Current state.

    43  */

    44 ScreensaverState ScreensaverPrivate::currentState()

    45 {

    46     return mState;

    47 }

    48 

    49 /*!

    50     Change state on Initialized.

    51  */

    52 void ScreensaverPrivate::initialize()

    53 {

    54     switch (mState)

    55     {

    56     case ScreensaverStateConstructed:

    57     case ScreensaverStateClosed:

    58         break;

    59     default:

    60         return;

    61     }

    62 

    63     mState = ScreensaverStateInitialized;

    64     if (!m_q->onInitialize()) {

    65         emit m_q->faulted();

    66     }

    67 }

    68 

    69 /*!

    70     Change state on Foreground.

    71  */

    72 void ScreensaverPrivate::foreground()

    73 {

    74     switch (mState)

    75     {

    76     case ScreensaverStateInitialized:

    77     case ScreensaverStateBackground:

    78     case ScreensaverStatePowerSave:

    79     case ScreensaverStatePartialForeground:

    80         break;

    81     default:

    82         return;

    83     }

    84 

    85     mState = ScreensaverStateForeground;

    86     if (!m_q->onForeground()) {

    87         emit m_q->faulted();

    88     }

    89 }

    90 

    91 /*!

    92     Change state on PartialForeground.

    93  */

    94 void ScreensaverPrivate::partialForeground()

    95 {

    96     switch (mState)

    97     {

    98     case ScreensaverStateInitialized:

    99     case ScreensaverStateForeground:

   100     case ScreensaverStateBackground:

   101         break;

   102     default:

   103         return;

   104     }

   105 

   106     mState = ScreensaverStatePartialForeground;

   107     if (!m_q->onPartialForeground()) {

   108         emit m_q->faulted();

   109     }

   110 }

   111 

   112 /*!

   113     Change state on Background.

   114  */

   115 void ScreensaverPrivate::background()

   116 {

   117     switch (mState)

   118     {

   119     case ScreensaverStateInitialized:

   120     case ScreensaverStateForeground:

   121     case ScreensaverStatePartialForeground:

   122     case ScreensaverStatePowerSave:

   123         break;

   124     default:

   125         return;

   126     }

   127 

   128     mState = ScreensaverStateBackground;

   129     if (!m_q->onBackground()) {

   130         emit m_q->faulted();

   131     }

   132 }

   133 

   134 /*!

   135     Change state on Disabled.

   136  */

   137 void ScreensaverPrivate::powerSave()

   138 {

   139     switch (mState)

   140     {

   141     case ScreensaverStateBackground:

   142         break;

   143     default:

   144         return;

   145     }

   146 

   147     mState = ScreensaverStatePowerSave;

   148     if (!m_q->onPowerSave()) {

   149         emit m_q->faulted();

   150     }

   151 }

   152 

   153 /*!

   154     Change state on Closed.

   155  */

   156 void ScreensaverPrivate::close()

   157 {

   158     switch (mState)

   159     {

   160     case ScreensaverStateInitialized:

   161     case ScreensaverStateBackground:

   162     case ScreensaverStateForeground:

   163     case ScreensaverStatePartialForeground:

   164     case ScreensaverStatePowerSave:

   165         break;

   166     default:

   167         return;

   168     }

   169 

   170     mState = ScreensaverStateClosed;

   171     if (!m_q->onClose()) {

   172         emit m_q->faulted();

   173     }

   174 }