Application +Services

Alarm Server

The +AlarmServer is used to set alarms such as clock or calendar applications. +The Alarm Server manages a queue of alarms and notifies the user in conjunction +with other Application Framework components.

The AlarmServer maintains +the queue of all system-wide alarms, this is known as Alarm handling. Session +alarms are for a single session only and are completed when an alarm expires. +Non session alarms occur if a session orphans its alarm by closing its connection +to the AlarmServer.

Calendar Conversion

For +applications that require Chinese date support calcon is a calendar conversion +utility which provides conversion between Gregorian and Chinese Lunar calendar +dates. The conversion is restricted to date conversion – time conversion is +not supported. Corrections have been applied where Chinese lunar days are +deemed to start at times other than midnight.

Julian dates are used +for internal storage. A Julian date is a count of days from a point in time +(defined as noon 24/11/4713 BC). Chinese Lunar calendar dates consist of:

Year cycle
Year (1-60)
Month (1-12)
Whether or not the month +is a leap month
Day in the month (1-29 +or 1-30 in a leap month)

Help Model

Hlpmodel +enables the user to search for specific information on a help database. Help +databases contain rich text formatted data (including pictures) and metadata +used to identify help information for searching.

The help launcher +is a small DLL that allows the device-specific help application to be launched +with a context sensitive identifier, so that a suitable help topic is displayed +within the help application.

Time Zone Server

Time +Zone Server provides functionality to convert between UTC times and local +“wall-clock” times. It allows for Daylight Savings Time (DST) rules and adjusts +local times accordingly. This functionality applies to both the current locale +and other specified locales. It also applies to any time, historical or future +(within a given range) at the specified locale

The application allows +time conversion between UTC and local “wall-clock” time and automatic clock +adjustment for daylight saving.

The Time Zone Compiler creates a Time +Zone Database for Symbian from the Olson Tz database, which provides a collaborative +compilation of information about the world's time zones.

Time Zone Localization

The +Time Zone Localization component provides localisation support for time zone +names. The component makes use of the standard Symbian resource framework +for loading localizable strings. This allows licensees to provide localized +time zone and city name strings for target markets.

Localizable text +includes:

Time zone ID, generated +by the TzCompiler
Time zone standard name
Time zone daylight savings +name
Time zone short standard +name
Time zone short daylight +savings name

Versit

The +Versit component provides a set of classes that can be used by application +or system developers to import and export data. The data is formatted according +to a set of standards initially defined by the Versit consortium.

The +plain-text formatted data can be included in emails, saved to disk or transferred +from one application to another using streams. Two specifications have been +published: vCard for the transmission of contact information and vCal for +the transmission of calendaring information.

Although the information +contained in contact data is different from that contained in calendar data, +the basic formatting of the information follows the same style. It is this +formatting style that has had a strong influence on the functional requirements +of the Versit component.