AlarmServerExample: Alarm manager console application

Found in examples\AppServices\AlarmServer\.

AlarmServerExample.h

// AlarmServerExample.h
//
// Copyright (c) 2006 Symbian Software Ltd.  All rights reserved.
//
//

#if (!defined __ALARMSERVEREXAMPLE_H__)
#define __ALARMSERVEREXAMPLE_H__
#include <asshddefs.h>

class CExampleAlarmServer : public CBase
    {
public:
    static CExampleAlarmServer* NewL();
    void EgAlarmServerL();
    ~CExampleAlarmServer(); 
    
private:
    void ConstructL();
    void SetFloatingAlarmL();
    void AddFetchDeleteFixedAlarmL();
    void WaitForAlarmToBeCleared();
    void DisplayNotificationType(TAlarmChangeEvent aAlarmChangeEvent,TAlarmId aAlarmId);
    void DisplayAlarmState(TAlarmState aState); 
    
private:    

    RASCliSession iAlarmServerSession;
    };
#endif /*__ALARMSERVEREXAMPLE_H__ */

AlarmServerExample.cpp

// AlarmServerExample.cpp
//
// Copyright (c) 2006 Symbian Software Ltd.  All rights reserved.

// System includes
#include <e32base.h>
#include <e32cons.h>
#include <asshdalarm.h>
#include <asclisession.h>

// Local includes
#include "AlarmServerExample.h"

// Global definition
static CConsoleBase* gConsole;
// Strings for display
_LIT(KConsoleStars,"\n*************************");

CExampleAlarmServer* CExampleAlarmServer::NewL()
    {
    CExampleAlarmServer* self = new (ELeave) CExampleAlarmServer();
    CleanupStack::PushL(self);
    self->ConstructL();
    CleanupStack::Pop(self);
    return self;
    }
    
void CExampleAlarmServer::ConstructL()
    {
    // connect to the alarm server
    User::LeaveIfError(iAlarmServerSession.Connect());
    }   
    
CExampleAlarmServer::~CExampleAlarmServer() 
    {
    iAlarmServerSession.Close();
    }

// Called each time the alarm server generates an event. Displays a description of the event.
void CExampleAlarmServer::DisplayNotificationType(TAlarmChangeEvent aAlarmChangeEvent, TAlarmId /*aAlarmId*/)
    {
    switch (aAlarmChangeEvent)
        {
        case EAlarmChangeEventUndefined:
            _LIT(KConsoleMsg, "\nAn undefined alarm event has occurred.");
            gConsole->Printf(KConsoleMsg);
            break;
        case EAlarmChangeEventState:
            _LIT(KConsoleMsg1, "\nAn alarm has changed state.");
            gConsole->Printf(KConsoleMsg1);
            break;
        case EAlarmChangeEventStatus:
            _LIT(KConsoleMsg2, "\nAn alarm has changed status.");
            gConsole->Printf(KConsoleMsg2);
            break;
        case EAlarmChangeEventCharacteristics:
            _LIT(KConsoleMsg3, "\nAn alarm has changed characteristics..");
            gConsole->Printf(KConsoleMsg3);
            break;
        case EAlarmChangeEventAlarmDeletion:
            _LIT(KConsoleMsg4, "\nAn alarm has been deleted from the queue.");
            gConsole->Printf(KConsoleMsg4);
            break;
        case EAlarmChangeEventAlarmAddition:
            _LIT(KConsoleMsg5, "\nAn alarm has been added to the queue.");
            gConsole->Printf(KConsoleMsg5);
            break;
        case EAlarmChangeEventTimerExpired:
            _LIT(KConsoleMsg6, "\nAn alarm has expired.");
            gConsole->Printf(KConsoleMsg6);
            break;
        case EAlarmChangeEventSoundPlaying:
            _LIT(KConsoleMsg7, "\nThe sound for an alarm has just started playing.");
            gConsole->Printf(KConsoleMsg7);
            break;
        case EAlarmChangeEventSoundStopped:
            _LIT(KConsoleMsg8, "\nThe sound for an alarm has just stopped playing.");
            gConsole->Printf(KConsoleMsg8);
            break;
        case EAlarmChangeEventPlayIntervalsChanged:
            _LIT(KConsoleMsg9, "\nThe sound intervals associated with sound timing have changed.");
            gConsole->Printf(KConsoleMsg9);
            break;
        case EAlarmChangeEventGlobalSoundStateChanged:
            _LIT(KConsoleMsg10, "\nThe global sound state (on/off) has changed.");
            gConsole->Printf(KConsoleMsg10);
            break;
        case EAlarmChangeEventHeadQueueItemChanged:
            _LIT(KConsoleMsg11, "\nThe next alarm at the head of the alarm queue has changed.");
            gConsole->Printf(KConsoleMsg11);
            break;
        case EAlarmChangeEventSystemDateTimeChanged:
            _LIT(KConsoleMsg12, "\nThe system date or time has changed, or the days defined as workdays have changed.");
            gConsole->Printf(KConsoleMsg12);
            break;
        case EAlarmChangeEventAlarmUIVisible:
            _LIT(KConsoleMsg13, "\nThe alarm alert server has been instructed to show the 'alarm expired' display.");
            gConsole->Printf(KConsoleMsg13);
            break;
        case EAlarmChangeEventAlarmUIInvisible:
            _LIT(KConsoleMsg14, "\nThe alarm alert server has been instructed to hide the 'alarm expired' display.");
            gConsole->Printf(KConsoleMsg14);
            break;
        case EAlarmChangeEventSoundSilence:
            _LIT(KConsoleMsg15, "\nAlarm sounds have been temporarily silenced, the current alarm has been paused or re-enabled.");
            gConsole->Printf(KConsoleMsg15);
            break;
        case EAlarmChangeEventAlarmData:
            _LIT(KConsoleMsg16, "\nThe data associated with an alarm has changed.");
            gConsole->Printf(KConsoleMsg16);
            break;
        case EAlarmChangeEventRestoreStarted:
            _LIT(KConsoleMsg17, "\nA restore from backup of the alarm server has started. Alarms cannot be added/deleted until this has finished.");
            gConsole->Printf(KConsoleMsg17);
            break;
        case EAlarmChangeEventRestoreFailed:
            _LIT(KConsoleMsg18, "\nA restore from backup of the alarm server has failed. Alarms can be added/deleted again.");
            gConsole->Printf(KConsoleMsg18);
            break;
        case EAlarmChangeEventRestoreCompleted:
            _LIT(KConsoleMsg19, "\nA restore from backup of the alarm server has completed. The alarm queue has changed.");
            gConsole->Printf(KConsoleMsg19);
            break;
        case EAlarmChangeEventLast:
            _LIT(KConsoleMsg20, "\nLast change event (anchor). This is always at the end of the list.");
            gConsole->Printf(KConsoleMsg20);
            break;
        }
    }
    

// Waits for the alarm to be cleared by the user.
// In the meantime, prints out descriptions of all change events generated by server.
void CExampleAlarmServer::WaitForAlarmToBeCleared()
    {
    TAlarmChangeEvent alarmChangeEvent;
    do
        {
        TRequestStatus status; 
        TAlarmId alarmId;
        iAlarmServerSession.NotifyChange(status, alarmId);
        User::WaitForRequest(status);
        alarmChangeEvent = static_cast<TAlarmChangeEvent>(status.Int());
        DisplayNotificationType(alarmChangeEvent,alarmId);
        }
    // EAlarmChangeEventAlarmUIInvisible is generated when the alarm is cleared
    while (alarmChangeEvent != EAlarmChangeEventAlarmUIInvisible);
    }
    
// Sets a floating alarm and adds it to the alarmserver queue.
// This is an alarm that is set using local time, for example a morning wake up call.
void CExampleAlarmServer::SetFloatingAlarmL()
    {
    /*
    There are two types of alarms - floating and fixed.
    For a floating alarm, time is set in local time by using TASShdAlarm::NextDueTime().
    A floating alarm will be rescheduled when the UTC offset is changed.

    In case of fixed alarms, time is set in UTC by using TASShdAlarm::SetUtcNextDueTime().
    A fixed alarm will not be rescheduled when the UTC offset is changed.
    */
    _LIT(KConsoleMsg, "\nPress any key to add a floating alarm");
    gConsole->Printf(KConsoleMsg);
    _LIT(KConsoleMsg2,"\nWhen notification occurs, press Clear to continue");
    gConsole->Printf(KConsoleMsg2);
    gConsole->Getch();
    gConsole->Printf(KConsoleStars);

    TASShdAlarm alarm;
    alarm.Category() = KASCliCategoryClock;
    // Alarm occurs once, today. This is the default.
    alarm.RepeatDefinition() = EAlarmRepeatDefintionRepeatOnce;
    _LIT(KAlarmMessage,"\nThis is a floating alarm.");
    alarm.Message() = KAlarmMessage;
    // Get the local time and set it as the alarm's due time
    alarm.NextDueTime().HomeTime();
    // Set alarm to expire in the past - should go off immediately.
    // Note that if the alarm was of type EAlarmRepeatDefintionRepeatNext24Hours
    // it would expire tomorrow.
    alarm.NextDueTime() -= TTimeIntervalSeconds(2); 
    
      // WriteUserData capability is required to add an alarm
      User::LeaveIfError(iAlarmServerSession.AlarmAdd(alarm));
    // Wait for the user to clear the alarm
    WaitForAlarmToBeCleared();
    }

// Displays the state of the alarm
void CExampleAlarmServer::DisplayAlarmState(TAlarmState aState)
    {
    switch (aState)
        {
        case EAlarmStateInPreparation:
            _LIT(KConsoleMsg1, "\nThe alarm state is not currently known by the alarm server..");
            gConsole->Printf(KConsoleMsg1);
            break;
        case EAlarmStateQueued:
            _LIT(KConsoleMsg2, "\nThe alarm is in the queue.");
            gConsole->Printf(KConsoleMsg2);
            break;
        case EAlarmStateSnoozed:
            _LIT(KConsoleMsg3, "\nThe alarm is snoozed. When the snooze period is over, the alarm expires again.");
            gConsole->Printf(KConsoleMsg3);
            break;
        case EAlarmStateWaitingToNotify:
            _LIT(KConsoleMsg4, "\nThe alarm is waiting to be notified.");
            gConsole->Printf(KConsoleMsg4);
            break;
        case EAlarmStateNotifying:
            _LIT(KConsoleMsg5, "\nThe alarm is currently notifying"); 
            gConsole->Printf(KConsoleMsg5);
            break;
        case EAlarmStateNotified:
            _LIT(KConsoleMsg6, "\nThe alarm has already notified and has been dismissed.");
            gConsole->Printf(KConsoleMsg6);
            break;
        }
    }
    

// Sets a fixed alarm and adds it to the alarmserver's queue.
// This is an alarm that is set using UTC, so will not change if 
// for instance the system time zone changes.
// This function fetches and prints alarm details.
void CExampleAlarmServer::AddFetchDeleteFixedAlarmL()
    {
    gConsole->Printf(KConsoleStars);
    _LIT(KConsoleMsg, "\nPress any key to add a fixed alarm");
    gConsole->Printf(KConsoleMsg);
    gConsole->Getch();

    TASShdAlarm alarm;
    TAlarmCategory alarmCategory = KASCliCategoryClock;
    alarm.Category()=alarmCategory;
    _LIT(KAlarmMessage, "This is a fixed alarm");
    alarm.Message() = KAlarmMessage;
    _LIT(KAlarmSound, "Chimes");
    alarm.SoundName() = KAlarmSound;
    // Alarm occurs once. 
    alarm.RepeatDefinition() = EAlarmRepeatDefintionRepeatOnce;
    
    TTime time;
    // Time is set in UTC for a fixed alarm 
    time.UniversalTime();
    // Set alarm to expire in 2 seconds. 
    time += TTimeIntervalSeconds(2);
    alarm.SetUtcNextDueTime(time);
    
      // WriteUserData capability is required to add an alarm
    User::LeaveIfError(iAlarmServerSession.AlarmAdd(alarm));
  
    // Fetch some details about the alarm from the server and print them
    const TAlarmId id = alarm.Id();
    TAlarmCategory category;
    User::LeaveIfError(iAlarmServerSession.GetAlarmCategory(id, category));
    User::LeaveIfError(iAlarmServerSession.GetAlarmDetails(id, alarm));

    TAlarmState state = alarm.State();
    DisplayAlarmState(state);
    
    TAlarmMessage message = alarm.Message();
    TBuf<256> messageBuf;
    messageBuf.Copy(message);
    _LIT(KConsoleMessage,"\nThe alarm's message is....:");
    gConsole->Printf(KConsoleMessage);
    gConsole->Printf(messageBuf);
    
    TAlarmSoundName soundName = alarm.SoundName();
    messageBuf.Copy(soundName);
    _LIT(KConsoleSoundName,"\nThe alarm's sound name is ....:");
    gConsole->Printf(KConsoleSoundName);
    gConsole->Printf(messageBuf);
        
    _LIT(KDeleteMsg, "\n\nPress any key to finish");
    gConsole->Printf(KDeleteMsg);
    gConsole->Getch();

    User::LeaveIfError(iAlarmServerSession.AlarmDelete(id));
    }
    

void CExampleAlarmServer::EgAlarmServerL()
    {
    SetFloatingAlarmL();
    AddFetchDeleteFixedAlarmL();
    }

static void DoExampleL()
    {
    // Create the console to print the messages to.
    _LIT(KConsoleMessageDisplay, "Alarm Server Example");
    gConsole = Console::NewL(KConsoleMessageDisplay,TSize(KConsFullScreen,KConsFullScreen));
    CleanupStack::PushL(gConsole);
    gConsole->Printf(KConsoleMessageDisplay);
    gConsole->Printf(KConsoleStars);

    CExampleAlarmServer* egAlarmServer= CExampleAlarmServer::NewL();
    TRAPD(err, egAlarmServer->EgAlarmServerL());
    if (err)
        {
        _LIT(KFailed,"\n\nExample failed: leave code=%d");
        gConsole->Printf(KFailed, err);
        gConsole->Getch();
        }
    delete egAlarmServer;  
    CleanupStack::PopAndDestroy(gConsole);
    }

// Standard entry point function
TInt E32Main()
    {
    __UHEAP_MARK;
    // Active scheduler required as this is a console app
    CActiveScheduler* scheduler=new CActiveScheduler;
    // If active scheduler has been created, install it.
    if (scheduler)
        {
        CActiveScheduler::Install(scheduler);
        // Cleanup stack needed
        CTrapCleanup* cleanup=CTrapCleanup::New();
        if (cleanup)
            {
            TRAP_IGNORE(DoExampleL());
            delete cleanup;
            }
        delete scheduler;
        } 
    __UHEAP_MARKEND;
    return KErrNone;
    }

// BLD.INF
// Component description file
//
// Copyright (c) 2006 Symbian Software Ltd.  All rights reserved.

PRJ_MMPFILES

AlarmServerExample.mmp

// AlarmServerExample.mmp
//
// Copyright (c) 2006 Symbian Software Ltd.  All rights reserved.

TARGET      AlarmServerExample.exe
TARGETTYPE  exe
UID     0xE8000093


CAPABILITY  WriteUserData

// using relative paths for source and user includes

SOURCEPATH      .
SOURCE          AlarmServerExample.cpp
USERINCLUDE      .
SYSTEMINCLUDE  \Epoc32\include


LIBRARY       EUSER.LIB
LIBRARY       AlarmClient.lib
LIBRARY       AlarmShared.lib 

This example application demonstrates the client API to the alarm server. It adds a floating alarm and a fixed alarm to the alarm server queue. Before adding the alarms, the application connects to the alarm server using RASCliSession::Connect().

After connecting to the server, an object of TASShdAlarm class is created with the following characteristics to represent an alarm on the server:

• The repeat definition is set to EAlarmRepeatDefintionRepeatOnce using TASShdAlarm::RepeatDefinition(). This enables the alarm to occur only once.

• The due time (expiry time) for the floating alarm is set in local time using TASShdAlarm::NextDueTime().

• The due time (expiry time) for the fixed alarm is set in universal time using TASShdAlarm::SetUtcNextDueTime().

• The floating alarm is set to display a message on expiry using TASShdAlarm::Message().

• The fixed alarm is set to play a sound on expiry using TASShdAlarm::SoundName(), along with displaying a message.

The alarm is added to the server queue using RASCliSession::AlarmAdd() and change event notification is requested from the server using RASCliSession::NotifyChange().

The application also demonstrates how to query the server for an alarm using its ID. The category and details of an alarm can be retrieved using RASCliSession::GetAlarmCategory() and RASCliSession::GetAlarmDetails() respectively. Finally, the alarm is deleted from the server using RASCliSession::AlarmDelete().

This is a console application, which builds an executable called AlaramServerExample.exe in the standard location (\epoc32\release\winscw\<build_variant> for CodeWarrior). After launching the executable, depending on the emulator you are using, you may need to navigate from the app launcher/shell screen to view the console. Alternatively, adding the string textshell to the emulator configuration file epoc.ini causes the emulator to start in text mode.

• RASCliSession

• TASShdAlarm

• Alarm Server Overview