/**
* Receives notification that a new group is about to start. If this is the group defined for the
* function, then the minimum value is reset to zero.
*
* @param event Information about the event.
*/
public void groupStarted(final ReportEvent event) {
if (FunctionUtilities.isDefinedGroup(getGroup(), event)) {
clear();
}
if (FunctionUtilities.isDefinedGroup(getCrosstabFilterGroup(), event)) {
final int groupIndex = event.getState().getCurrentGroupIndex();
this.lastGroupSequenceNumber =
(int) event.getState().getCrosstabColumnSequenceCounter(groupIndex);
}
}
public void summaryRowSelection(final ReportEvent event) {
if (rowbandingOnGroup == false) {
return;
}
if (StringUtils.isEmpty(group)) {
final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
if (group instanceof CrosstabRowGroup) {
final GroupBody body = group.getBody();
if (body instanceof CrosstabColumnGroupBody) {
if (Boolean.TRUE.equals(
group.getAttribute(
AttributeNames.Crosstab.NAMESPACE, AttributeNames.Crosstab.PRINT_SUMMARY))) {
triggerVisibleStateCrosstab(event);
}
}
}
} else {
if (FunctionUtilities.isDefinedGroup(group, event)) {
final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
if (Boolean.TRUE.equals(
group.getAttribute(
AttributeNames.Crosstab.NAMESPACE, AttributeNames.Crosstab.PRINT_SUMMARY))) {
triggerVisibleStateCrosstab(event);
}
}
}
}
/**
* Receives notification that report generation initializes the current run.
*
* <p>The event carries a ReportState.Started state. Use this to initialize the report.
*
* @param event The event.
*/
public void reportInitialized(final ReportEvent event) {
if (ignoreCrosstabMode) {
// If the user forces us into relational-mode, then we obey ..
rowbandingOnGroup = StringUtils.isEmpty(group) == false;
} else {
// check whether there is a crosstab
if (FunctionUtilities.isCrosstabDefined(event)) {
// when we have one, we always rowband on a group instead of an item-count
rowbandingOnGroup = true;
} else {
// we only row-band on an item-count if the group is not empty.
rowbandingOnGroup = StringUtils.isEmpty(group) == false;
}
}
trigger = !getInitialState();
count = 0;
}
/**
* Triggers the visible state of the specified itemband element. If the named element was visible
* at the last call, it gets now invisible and vice versa. This creates the effect, that an
* element is printed every other line.
*
* @param event the current report event.
*/
private void triggerVisibleState(final ReportEvent event) {
// avoid divide by zero exception
if (numberOfElements == 0) {
return;
}
if ((count % numberOfElements) == 0) {
trigger = (!trigger);
}
count += 1;
final ItemBand itemBand = event.getReport().getItemBand();
if (itemBand == null) {
return;
}
if (element == null) {
if (trigger) {
itemBand.getStyle().setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, visibleBackground);
} else {
itemBand
.getStyle()
.setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, invisibleBackground);
}
} else {
final Element[] e = FunctionUtilities.findAllElements(itemBand, getElement());
if (e.length > 0) {
for (int i = 0; i < e.length; i++) {
if (trigger) {
e[i].getStyle().setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, visibleBackground);
} else {
e[i].getStyle()
.setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, invisibleBackground);
}
}
} else {
if (warned == false) {
RowBandingFunction.logger.warn(
"The Band does not contain an element named " + getElement());
warned = true;
}
}
}
}
public void groupStarted(final ReportEvent event) {
if (rowbandingOnGroup == false) {
return;
}
if (StringUtils.isEmpty(group)) {
final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
if (group instanceof CrosstabRowGroup) {
final GroupBody body = group.getBody();
if (body instanceof CrosstabColumnGroupBody) {
triggerVisibleStateCrosstab(event);
}
}
} else {
if (FunctionUtilities.isDefinedGroup(group, event)) {
triggerVisibleStateCrosstab(event);
}
}
}
/**
* Triggers the visible state of the specified itemband element. If the named element was visible
* at the last call, it gets now invisible and vice versa. This creates the effect, that an
* element is printed every other line.
*
* @param event the current report event.
*/
private void triggerVisibleStateCrosstab(final ReportEvent event) {
if ((count % numberOfElements) == 0) {
trigger = (!trigger);
}
count += 1;
final CrosstabCellBody cellBody = event.getReport().getCrosstabCellBody();
if (cellBody == null) {
return;
}
if (element == null) {
final int elementCount = cellBody.getElementCount();
for (int i = 1; i < elementCount; i += 1) {
final Element cell = cellBody.getElement(i);
if (trigger) {
cell.getStyle().setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, visibleBackground);
} else {
cell.getStyle().setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, invisibleBackground);
}
}
} else {
final Element[] e = FunctionUtilities.findAllElements(cellBody, getElement());
if (e.length > 0) {
for (int i = 0; i < e.length; i++) {
if (trigger) {
e[i].getStyle().setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, visibleBackground);
} else {
e[i].getStyle()
.setStyleProperty(ElementStyleKeys.BACKGROUND_COLOR, invisibleBackground);
}
}
} else {
if (warned == false) {
RowBandingFunction.logger.warn(
"The cell-body does not contain an element named " + getElement());
warned = true;
}
}
}
}
