Alarm API

The Alarm API provides functionality for scheduling the system alarm. It allows you to run other applications and have them perform operations at a specific time. You can schedule an alarm to go off once or to repeat at specific intervals.

Each application has its own individual alarm storage, that is, applications cannot view or edit alarms set by other applications.

Once an alarm goes off, it will be removed from the alarm storage automatically. AlarmManager provides methods to manage alarms such as adding and removing. For more information on the Alarm features, see Alarm Guide.

Since: 1.0

Summary of Interfaces and Methods

1. Type Definitions

1.1. AlarmId

An alarm identifier.

typedef DOMString AlarmId;

Since: 1.0

1.2. ByDayValue

Specifies the values for the daysOfTheWeek attribute.

        enum ByDayValue { "MO", "TU", "WE", "TH", "FR", "SA", "SU" };

Since: 1.0

"MO" to "SU" correspond to "Monday" to "Sunday".

2. Interfaces

2.1. AlarmManagerObject

The AlarmManagerObject interface defines what is instantiated by the Tizen object from the Tizen Platform. The tizen.alarm object allows access to the functionality of the Alarm API.

        [NoInterfaceObject] interface AlarmManagerObject {
            readonly attribute AlarmManager alarm;
        };

        Tizen implements AlarmManagerObject;

Since: 1.0

2.2. AlarmManager

The AlarmManager interface provides methods to manage alarms.

        [NoInterfaceObject] interface AlarmManager {
            const long PERIOD_MINUTE = 60;
    
            const long PERIOD_HOUR = 3600;
    
            const long PERIOD_DAY = 86400;
    
            const long PERIOD_WEEK = 604800;
    
            void add(Alarm alarm, ApplicationId applicationId, optional ApplicationControl? appControl) raises(WebAPIException);
    
            void remove(AlarmId id) raises(WebAPIException);
    
            void removeAll() raises(WebAPIException);
    
            Alarm get(AlarmId id) raises(WebAPIException);
    
            Alarm[] getAll() raises(WebAPIException);
        };

Since: 1.0

Constants

• PERIOD_MINUTE

  The period of a minute. It defines the number of seconds per minute.

  Since: 1.0

• PERIOD_HOUR

  The period of an hour. It defines the number of seconds per hour.

  Since: 1.0

• PERIOD_DAY

  The period of a day. It defines the number of seconds per day.

  Since: 1.0

• PERIOD_WEEK

  The period of a week. It defines the number of seconds in a week.

  Since: 1.0

Methods

add

Adds an alarm to the storage.

    void add(Alarm alarm, ApplicationId applicationId, optional ApplicationControl? appControl);

Since: 1.0

Sets an alarm with the application ID to be run. You should definitely provide the application ID to run and the application control information if it is necessary. For more information about the application control, see The Application API.

Privilege level: public

Privilege: http://tizen.org/privilege/alarm

Parameters:

• alarm: An alarm to add. It can be either AlarmRelative or AlarmAbsolute.
• applicationId: The application ID to run when the alarm is triggered.
• appControl optional nullable: The data structure describing application control details.

Exceptions:

• WebAPIException

  • with error type TypeMismatchError, if any input parameter is not compatible with the expected type for that parameter.

  • with error type InvalidValuesError, if any input parameter does not contain a valid value.

  • with error type SecurityError, if the application does not have the privilege to call this method.

  • with error type UnknownError, if any other error occurs.

Code example:

     // Triggers an alarm on a given date/time
     var alarm = new tizen.AlarmAbsolute(new Date(2014, 10, 4, 8, 0));
     var appControl = new tizen.ApplicationControl("http://tizen.org/appcontrol/operation/view");
     tizen.alarm.add(alarm, tizen.application.getCurrentApplication().appInfo.id, appControl);
     console.log("Alarm added with id: " + alarm.id);

remove

Removes an alarm from the storage.

    void remove(AlarmId id);

Since: 1.0

If an alarm goes off, it will be removed from the storage automatically.

Privilege level: public

Privilege: http://tizen.org/privilege/alarm

Parameters:

• id: The ID of the alarm to remove

Exceptions:

• WebAPIException

  • with error type NotFoundError, if this alarm identifier cannot be found in the storage.

  • with error type InvalidValuesError, if any input parameter does not contain a valid value.

  • with error type SecurityError, if the application does not have the privilege to call this method.

  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     var alarms = tizen.alarm.getAll();
    
     // Removes the first alarm
     if (alarms.length > 0) {
       try {
         tizen.alarm.remove(alarms[0].id);
         console.log("Successfully removed the first alarm.");
       } catch(error) {
         console.log("Failed to remove the first alarm.");
       }
     }

removeAll

Removes all alarms added by an application.

    void removeAll();

Since: 1.0

Because each application has its own alarm storage, this method removes alarms only added by the calling application.

Privilege level: public

Privilege: http://tizen.org/privilege/alarm

Exceptions:

• WebAPIException

  • with error type SecurityError, if the application does not have the privilege to call this method.

  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     tizen.alarm.removeAll();
     console.log("remove all registered alarms in the storage.");
     

get

Returns an alarm as per the specified identifier.

    Alarm get(AlarmId id);

Since: 1.0

Parameters:

• id: The alarm ID to retrieve.

Return value:

Alarm An alarm object with the specified ID.

Exceptions:

• WebAPIException

  • with error type NotFoundError, if this alarm identifier cannot be found in the storage.

  • with error type InvalidValuesError, if any input parameter does not contain a valid value.

  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     // Sets an alarm
     var date = new Date();
     date.setHours(date.getHours()+1);
     var abs_alarm = new tizen.AlarmAbsolute(date);
    
     // Adds an alarm
     tizen.alarm.add(abs_alarm, tizen.application.getCurrentApplication().appInfo.id);
    
     // Gets an alarm
     var alarm = tizen.alarm.get(abs_alarm.id);
     console.log("The alarm will trigger at " + alarm.getNextScheduledDate());

getAll

Retrieves all alarms in an application storage.

    Alarm[] getAll();

Since: 1.0

Alarms that have already been triggered are removed automatically from the storage.

Return value:

Alarm[] All Alarm objects.

Exceptions:

• WebAPIException
  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     var alarms = tizen.alarm.getAll();
     console.log(alarms.length + " alarms present in the storage.");
     

2.3. Alarm

The Alarm interface is an abstract interface for alarm types.

        [NoInterfaceObject] interface Alarm {
            readonly attribute AlarmId? id;
        };

Since: 1.0

Attributes

• readonly AlarmId id The alarm identifier
  Since: 1.0

2.4. AlarmRelative

The AlarmRelative interface provides the relative alarm, which occurs at a fixed interval in future.

        [Constructor(long delay, optional long? period)]
        interface AlarmRelative : Alarm {
            readonly attribute long delay;
    
            readonly attribute long? period;
    
            long? getRemainingSeconds() raises(WebAPIException);
        };

Since: 1.0

This alarm triggers after a duration mentioned in the delay attribute from the moment the alarm is added. If a period is provided, the alarm keeps triggering for the given interval.

Remark : Since Tizen 2.4 behaviour of this alarm has changed. In order to decrease the power consumption, the operating system decides when this alarm is going to be fired and what is the period between subsequent executions. It is guaranteed that this alarm will be fired after at least delay seconds. If period is provided, it will be adjusted by the operating system, however this value will not be lower than 600 seconds.

Code example:

     // Gets the current application ID.
     var appId = tizen.application.getCurrentApplication().appInfo.id;
    
     // Sets an alarm in 3 hours from now
     var alarm1 = new tizen.AlarmRelative(3 * tizen.alarm.PERIOD_HOUR);
     tizen.alarm.add(alarm1, appId);
    
     // Sets an alarm in one hour, recurring after every 10 minutes
     var alarm2 = new tizen.AlarmRelative(tizen.alarm.PERIOD_HOUR, 10 * tizen.alarm.PERIOD_MINUTE);
     tizen.alarm.add(alarm2, appId);

Constructors

    AlarmRelative(long delay, optional long? period);

Attributes

• readonly long delay
  An attribute to store the difference in time (in seconds) between when an alarm is added and when it is triggered.
  Since: 1.0
  Remark : Since Tizen 2.4 the operating system adjusts this value to decrease the power consumption.
• readonly long nullable
  An attribute to store the duration in seconds between each trigger of an alarm. By default, this attribute is set to null, indicating that this alarm does not repeat.
  Since: 1.0
  Remark : Since Tizen 2.4 the operating system adjusts this value to decrease the power consumption.

Methods

getRemainingSeconds

Returns the duration in seconds before the next alarm is triggered.

    long? getRemainingSeconds();
                 

Since: 1.0

If the alarm has expired, this method returns null.

Return value:

long The duration before the next alarm is triggered.

Exceptions:

• WebAPIException
  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     // Gets the current application ID.
     var appId = tizen.application.getCurrentApplication().appInfo.id;
    
     // Sets an alarm in 3 hours from now
     var alarm = new tizen.AlarmRelative(3 * tizen.alarm.PERIOD_HOUR);
     tizen.alarm.add(alarm, appId);
    
     var sec = alarm.getRemainingSeconds();
     console.log("remaining time is " + sec);

2.5. AlarmAbsolute

The AlarmAbsolute interface provides an absolute alarm, which triggers at a specified absolute date.

        [Constructor(Date date),
    
         Constructor(Date date, ByDayValue[] daysOfTheWeek),
    
         Constructor(Date date, long period)]
        interface AlarmAbsolute : Alarm {
            readonly attribute Date date;
    
            readonly attribute long? period;
    
            readonly attribute ByDayValue[] daysOfTheWeek;
    
            Date? getNextScheduledDate() raises(WebAPIException);
        };

Since: 1.0

If a period is provided, the alarm keeps triggering for the given interval. If the daysOfTheWeek array is not empty, the alarm triggers every week, for the given days, at the time defined by the date attribute.

Code example:

     // Gets the current application ID.
     var appId = tizen.application.getCurrentApplication().appInfo.id;
    
     // Sets an alarm on January 1st 2014 08:00
     var date = new Date(2014, 0, 1, 8, 0);
     var alarm1 = new tizen.AlarmAbsolute(date);
     tizen.alarm.add(alarm1, appId);
    
     // Sets an alarm on January 1st 2014 08:00, repeating every 2 days
     var alarm2 = new tizen.AlarmAbsolute(date, 2 * tizen.alarm.PERIOD_DAY);
     tizen.alarm.add(alarm2, appId);
    
     // Sets an alarm occurring on every Saturday and Sunday, at 08:00, starting from January 1st 2014
     var alarm3 = new tizen.AlarmAbsolute(date, ["SA", "SU"]);
     tizen.alarm.add(alarm3, appId);
     

Constructors

    AlarmAbsolute(Date date);

    AlarmAbsolute(Date date, ByDayValue[] daysOfTheWeek);

    AlarmAbsolute(Date date, long period);

Attributes

• readonly Date date
  An attribute to store the absolute date/time when the alarm is initially triggered.
  This attribute is precise to the second. Milliseconds will be ignored.
  Since: 1.0
• readonly long period [nullable]
  An attribute to store the duration in seconds between each trigger of the alarm.
  By default, this attribute is set to null, indicating that this alarm does not repeat. The _period_ and _daysOfTheWeek_ attributes are mutually exclusive.
  Since: 1.0
• readonly ByDayValue daysOfTheWeek
  An attribute to store the days of the week associated with the recurrence rule.
  By default, this attribute is set to an empty array. The _period_ and _daysOfTheWeek_ attributes are mutually exclusive.
  Since: 1.0

Methods

getNextScheduledDate

Returns the date / time of the next alarm trigger.

    Date? getNextScheduledDate();

Since: 1.0

If the alarm has expired, this method returns null. The returned date is precise to the second.

Return value:

Date The date/time of the next alarm trigger.

Exceptions:

• WebAPIException
  • with error type UnknownError, if the method cannot be completed because of an unknown error.

Code example:

     // Gets the current application ID.
     var appId = tizen.application.getCurrentApplication().appInfo.id;
    
     // Sets an alarm on January 1st 2014 08:00
     var date = new Date(2014, 0, 1, 8, 0);
     var alarm1 = new tizen.AlarmAbsolute(date);
     tizen.alarm.add(alarm1, appId);
    
     var date = alarm1.getNextScheduledDate();
     console.log("next scheduled time is " + date);
     

3. Full WebIDL

    module Alarm {
        typedef DOMString AlarmId;
    
        enum ByDayValue { "MO", "TU", "WE", "TH", "FR", "SA", "SU" };
    
        [NoInterfaceObject] interface AlarmManagerObject {
            readonly attribute AlarmManager alarm;
        };
        Tizen implements AlarmManagerObject;
    
        [NoInterfaceObject] interface AlarmManager {
            const long PERIOD_MINUTE = 60;
    
            const long PERIOD_HOUR = 3600;
    
            const long PERIOD_DAY = 86400;
    
            const long PERIOD_WEEK = 604800;
    
            void add(Alarm alarm, ApplicationId applicationId, optional ApplicationControl? appControl) raises(WebAPIException);
    
            void remove(AlarmId id) raises(WebAPIException);
    
            void removeAll() raises(WebAPIException);
    
            Alarm get(AlarmId id) raises(WebAPIException);
    
            Alarm[] getAll() raises(WebAPIException);
        };
    
        [NoInterfaceObject] interface Alarm {
            readonly attribute AlarmId? id;
        };
    
        [Constructor(long delay, optional long? period)]
        interface AlarmRelative : Alarm {
            readonly attribute long delay;
    
            readonly attribute long? period;
    
            long? getRemainingSeconds() raises(WebAPIException);
        };
    
        [Constructor(Date date),
    
         Constructor(Date date, ByDayValue[] daysOfTheWeek),
    
         Constructor(Date date, long period)]
        interface AlarmAbsolute : Alarm {
            readonly attribute Date date;
    
            readonly attribute long? period;
    
            readonly attribute ByDayValue[] daysOfTheWeek;
    
            Date? getNextScheduledDate() raises(WebAPIException);
        };
    };