context.arch.widget
Class WSoundLevel

java.lang.Object
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  +--context.arch.BaseObject
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        +--context.arch.widget.Widget
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              +--context.arch.widget.WSoundLevel

public class WSoundLevel

extends Widget

This class contains definitions for a context widget that provides information on the ambient sound level in a particular location. The information is in the form of a location and a volume value. It has the following callbacks: UPDATE. It supports polling and subscriptions. Currently it only uses the SoundLevel widget written in Frontier and itself relying on the Sonic Mac application (ie, the generator). It handles only a single SoundLevel instance. Since the widget is entirely implemented in Frontier, this class only contains definitions useful for the application programmer wishing to use the SoundLevel widget.

See Also:

Widget

Field Summary

static java.lang.String	CLASSNAME Name of widget
static java.lang.String	LOCATION Tag for user location
java.lang.String	VERSION_NUMBER Widget version number
static java.lang.String	VOLUME Tag for user id

Fields inherited from class context.arch.widget.Widget

attributes, attributeTypes, callbacks, CLASS, CurrentOffset, DEFAULT_PORT, id, PUT_DATA, PUT_DATA_REPLY, QUERY, QUERY_ATTRIBUTES, QUERY_ATTRIBUTES_REPLY, QUERY_CALLBACKS, QUERY_CALLBACKS_REPLY, QUERY_REPLY, QUERY_SERVICES, QUERY_SERVICES_REPLY, QUERY_VERSION, QUERY_VERSION_REPLY, services, SPACER, storage, subscribers, TIMESTAMP, UPDATE, UPDATE_AND_QUERY, UPDATE_AND_QUERY_REPLY, VERSION, VERSION_NUMBER

Fields inherited from class context.arch.BaseObject

communications, EXIT_OK, handlers, ID, parser, PING, PING_REPLY, serviceHandlers

Constructor Summary

WSoundLevel()
Dummy constructor to allow compilation

Method Summary

protected AttributeNameValues	queryGenerator() This method implements the abstract method Widget.queryGenerator().
protected Attributes	setAttributes() This method implements the abstract method Widget.setAttributes().
protected Callbacks	setCallbacks() This method implements the abstract method Widget.setCallbacks().
protected Services	setServices() This method implements the abstract method Widget.setServices().

Methods inherited from class context.arch.widget.Widget

addSubscriber, canHandle, canHandle, canHandle, canHandle, executeService, getAttributeType, getCurrentTime, getNewOffset, getNewOffsetNoDelay, isAttribute, isCallback, notify, processCallbackReply, putData, queryAttributes, queryCallbacks, queryServices, queryWidget, removeSubscriber, retrieveData, runUserMethod, runWidgetMethod, sendToSubscribers, setAttribute, store, store, updateWidgetInformation

Methods inherited from class context.arch.BaseObject

askInterpreter, decodeData, encodeData, executeAsynchronousWidgetService, executeSynchronousWidgetService, getHostAddress, getId, getVersion, getVersion, getWidgetAttributes, getWidgetCallbacks, getWidgetServices, main, pingComponent, pollWidget, putDataInWidget, queryVersion, quit, retrieveDataFrom, retrieveDataFrom, retrieveDataFrom, retrieveDataFrom, retrieveDataFrom, retrieveDataFrom, retrieveDataFrom, returnPing, runComponentMethod, runMethod, serviceResult, setId, setVersion, subscribeTo, subscribeTo, subscribeTo, subscribeTo, unsubscribeFrom, updateAndPollWidget, userCallback, userRequest, userRequest, userRequest

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VERSION_NUMBER

public java.lang.String VERSION_NUMBER

Widget version number

VOLUME

public static final java.lang.String VOLUME

Tag for user id

LOCATION

public static final java.lang.String LOCATION

Tag for user location

CLASSNAME

public static final java.lang.String CLASSNAME

Name of widget

Constructor Detail

WSoundLevel

public WSoundLevel()

Dummy constructor to allow compilation

Method Detail

setAttributes

protected Attributes setAttributes()

This method implements the abstract method Widget.setAttributes(). It defines the attributes for the widget as: empty

Overrides:

setAttributes in class Widget

Returns:

the Attributes used by this widget

setCallbacks

protected Callbacks setCallbacks()

This method implements the abstract method Widget.setCallbacks(). It defines the callbacks for the widget as: empty

Overrides:

setCallbacks in class Widget

Returns:

the Callbacks used by this widget

setServices

protected Services setServices()

This method implements the abstract method Widget.setServices(). It currently has no services and returns an empty Services object.

Overrides:

setServices in class Widget

Returns:

the Services provided by this widget

queryGenerator

protected AttributeNameValues queryGenerator()

This method implements the abstract method Widget.queryGenerator(). It just returns null.

Overrides:

queryGenerator in class Widget

Returns:

the AttributeNameValues from this widget's generator