org.jfree.report.states
Class PreGroupHeaderState

java.lang.Object
  org.jfree.report.states.ReportState
      org.jfree.report.states.PreGroupHeaderState

All Implemented Interfaces:

java.lang.Cloneable

public final class PreGroupHeaderState

extends ReportState

Processes an groupheader. Activates the next group and fires the GroupStartEvent for that group. then the PostGroupHeaderState-State gets activated.

Author:

David Gilbert

Field Summary

Fields inherited from class org.jfree.report.states.ReportState

BEFORE_FIRST_GROUP, BEFORE_FIRST_PAGE, BEFORE_FIRST_ROW

Constructor Summary

PreGroupHeaderState(ReportState previous)
Creates a new 'PRE-GROUP-HEADER' state.

Method Summary

ReportState	advance() Advances from this state to the 'POST-GROUP-HEADER' state after fireing the GroupStartedEvent.
boolean	isPrefetchState() Returns the corrected display item for this state.

Methods inherited from class org.jfree.report.states.ReportState

advanceItem, clone, createStateProgress, enterGroup, fireGroupFinishedEvent, fireGroupStartedEvent, fireItemsAdvancedEvent, fireItemsFinishedEvent, fireItemsStartedEvent, fireLayoutCompleteEvent, firePageCanceledEvent, firePageFinishedEvent, firePageStartedEvent, firePrepareEvent, fireReportDoneEvent, fireReportFinishedEvent, fireReportInitializedEvent, fireReportStartedEvent, getAncestorHashcode, getCurrentDataItem, getCurrentDisplayItem, getCurrentGroupIndex, getCurrentPage, getDataRow, getDataRowBackend, getDataRowPreview, getErrors, getFunctions, getLevel, getLevels, getNumberOfRows, getProperties, getProperty, getProperty, getReport, getReportDefinition, isAncestor, isErrorOccured, isFinish, isLastItemInGroup, isPrepareRun, isProceeding, isStart, leaveGroup, nextPage, resetState, setAncestorHashcode, setCurrentGroupIndex, setCurrentItem, setCurrentPage, setProperty

Methods inherited from class java.lang.Object

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

Constructor Detail

PreGroupHeaderState

public PreGroupHeaderState(ReportState previous)

Creates a new 'PRE-GROUP-HEADER' state.

Parameters:

previous - the previous state.

Method Detail

advance

public ReportState advance()

Advances from this state to the 'POST-GROUP-HEADER' state after fireing the GroupStartedEvent.

Specified by:

advance in class ReportState

Returns:

the next state ('POST-GROUP-HEADER').

isPrefetchState

public boolean isPrefetchState()

Returns the corrected display item for this state. As the currentItem has not yet advanced we perform a readAHead lookup when populating elements.

Overrides:

isPrefetchState in class ReportState

Returns:

true; Header related states preview the next itemband DataRow.