org.dspace.app.xmlui.aspect.administrative
Class SystemwideAlerts

java.lang.Object
  org.apache.cocoon.util.AbstractLogEnabled
      org.apache.cocoon.xml.AbstractXMLProducer
          org.apache.cocoon.xml.AbstractXMLPipe
              org.apache.cocoon.transformation.AbstractTransformer
                  org.dspace.app.xmlui.wing.AbstractWingTransformer
                      org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer
                          org.dspace.app.xmlui.aspect.administrative.SystemwideAlerts

All Implemented Interfaces:

org.apache.avalon.excalibur.pool.Poolable, org.apache.avalon.excalibur.pool.Recyclable, org.apache.cocoon.caching.CacheableProcessingComponent, org.apache.cocoon.sitemap.SitemapModelComponent, org.apache.cocoon.transformation.Transformer, org.apache.cocoon.xml.XMLPipe, org.apache.cocoon.xml.XMLProducer, org.apache.excalibur.xml.sax.XMLConsumer, DSpaceTransformer, WingTransformer, org.xml.sax.ContentHandler, org.xml.sax.ext.LexicalHandler

public class SystemwideAlerts
extends AbstractDSpaceTransformer
implements org.apache.cocoon.caching.CacheableProcessingComponent

This class maintains any system-wide alerts. If any alerts are activated then they are added to the page's metadata for display by the theme. This class also creates an interface for the alert system to be maintained.

Author:

Scott Phillips

Field Summary

static int	STATE_ALL_SESSIONS Possible user restricted states
static int	STATE_CURRENT_SESSIONS
static int	STATE_ONLY_ADMINISTRATIVE_SESSIONS

Fields inherited from class org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer

context, contextPath, eperson, knot, objectModel, parameters, servletPath, sitemapURI, url

Fields inherited from class org.apache.cocoon.xml.AbstractXMLProducer

contentHandler, EMPTY_CONTENT_HANDLER, lexicalHandler, xmlConsumer

Fields inherited from interface org.apache.cocoon.transformation.Transformer

ROLE

Constructor Summary

SystemwideAlerts()

Method Summary

static void	activateAlert() Activate the current alert.
void	addPageMeta(PageMeta pageMeta) If an alert is activated then add a count down message.
static boolean	canUserMaintainSession() Are users able to maintain a session, will return false if there is a current alert activated and sessions are restricted.
static boolean	canUserStartSession() Are users able to start a new session, will return false if there is a current alert activated and sessions are restricted.
static void	deactivateAlert() Deactivate the current alert.
static long	getCountDownToo() Get the time, in millieseconds, when the countdown timer is scheduled to end.
java.io.Serializable	getKey() Generate the unique caching key.
static java.lang.String	getMessage()
static int	getRestrictSessions()
org.apache.excalibur.source.SourceValidity	getValidity() Generate the cache validity object.
static boolean	isAlertActive() Check whether an alert is active.
static void	setCountDownToo(long countDownTo) Set the time, in millieseconds, to which the countdown timer should end.
static void	setMessage(java.lang.String message) Set the current alert's message.
static void	setRestrictSessions(int restrictsessions)

Methods inherited from class org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer

addBody, addOptions, addUserMeta, decodeFromURL, dispose, encodeForURL, generateURL, getComponentName, getObjectManager, handleException, recycle, setup

Methods inherited from class org.dspace.app.xmlui.wing.AbstractWingTransformer

createWingDocument, endDocument, endElement, endPrefixMapping, getDefaultMessageCatalogue, message, message, setupWing, startDocument, startElement, startPrefixMapping

Methods inherited from class org.apache.cocoon.xml.AbstractXMLPipe

characters, comment, endCDATA, endDTD, endEntity, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startCDATA, startDTD, startEntity

Methods inherited from class org.apache.cocoon.xml.AbstractXMLProducer

setConsumer, setContentHandler, setLexicalHandler

Methods inherited from class org.apache.cocoon.util.AbstractLogEnabled

getLogger, setLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

characters, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity

Methods inherited from interface org.xml.sax.ext.LexicalHandler

comment, endCDATA, endDTD, endEntity, startCDATA, startDTD, startEntity

Methods inherited from interface org.apache.cocoon.xml.XMLProducer

setConsumer

Field Detail

STATE_ALL_SESSIONS

public static final int STATE_ALL_SESSIONS

Possible user restricted states

See Also:

Constant Field Values

STATE_CURRENT_SESSIONS

public static final int STATE_CURRENT_SESSIONS

See Also:

Constant Field Values

STATE_ONLY_ADMINISTRATIVE_SESSIONS

public static final int STATE_ONLY_ADMINISTRATIVE_SESSIONS

See Also:

Constant Field Values

Constructor Detail

SystemwideAlerts

public SystemwideAlerts()

Method Detail

getKey

public java.io.Serializable getKey()

Generate the unique caching key.

Specified by:

getKey in interface org.apache.cocoon.caching.CacheableProcessingComponent

getValidity

public org.apache.excalibur.source.SourceValidity getValidity()

Generate the cache validity object.

Specified by:

getValidity in interface org.apache.cocoon.caching.CacheableProcessingComponent

addPageMeta

public void addPageMeta(PageMeta pageMeta)
                 throws WingException

If an alert is activated then add a count down message.

Specified by:

addPageMeta in interface DSpaceTransformer

Specified by:

addPageMeta in interface WingTransformer

Overrides:

addPageMeta in class AbstractDSpaceTransformer

Throws:

WingException

isAlertActive

public static boolean isAlertActive()

Check whether an alert is active.

activateAlert

public static void activateAlert()

Activate the current alert.

deactivateAlert

public static void deactivateAlert()

Deactivate the current alert.

setMessage

public static void setMessage(java.lang.String message)

Set the current alert's message.

Parameters:

message - The new message

getMessage

public static java.lang.String getMessage()

Returns:

the current alert's message

getCountDownToo

public static long getCountDownToo()

Get the time, in millieseconds, when the countdown timer is scheduled to end.

setCountDownToo

public static void setCountDownToo(long countDownTo)

Set the time, in millieseconds, to which the countdown timer should end. Note, that once the countdown has expried, the alert is still active. However the countdown will disappear.

getRestrictSessions

public static int getRestrictSessions()

setRestrictSessions

public static void setRestrictSessions(int restrictsessions)

canUserStartSession

public static boolean canUserStartSession()

Are users able to start a new session, will return false if there is a current alert activated and sessions are restricted.

Returns:

if false do not allow user to start a new session, otherwise no restriction.

canUserMaintainSession

public static boolean canUserMaintainSession()

Are users able to maintain a session, will return false if there is a current alert activated and sessions are restricted.

Returns:

if false do not allow user to maintain their current session or start a new session, otherwise no restriction.