org.jfree.report.states
Class PreItemGroupState

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

All Implemented Interfaces:

java.lang.Cloneable

public final class PreItemGroupState

extends ReportState

Prepare to print the items. This state fires the itemStarted-Event and advances to the InItemGroupState state.

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

PreItemGroupState(ReportState previous)
Creates a new 'pre-item-group' state.

Method Summary

ReportState	advance() Advances to the next state.
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

PreItemGroupState

public PreItemGroupState(ReportState previous)

Creates a new 'pre-item-group' state.

Parameters:

previous - the previous state.

Method Detail

advance

public ReportState advance()

Advances to the next state. Normally this will be the 'IN-ITEM-GROUP' state, but if the report's data (TableModel) has no rows, proceed to the 'POST-ITEM-GROUP' state.

Specified by:

advance in class ReportState

Returns:

the next state.

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.