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java.lang.Objectorg.apache.fop.area.IDTracker
public class IDTracker
Used by the AreaTreeHandler to keep track of ID reference usage on a PageViewport level.
| Constructor Summary | |
|---|---|
IDTracker()
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| Method Summary | |
|---|---|
void |
addUnresolvedIDRef(java.lang.String idref,
Resolvable res)
Add an Resolvable object with an unresolved idref |
boolean |
alreadyResolvedID(java.lang.String id)
Check if an ID has already been resolved |
void |
associateIDWithPageViewport(java.lang.String id,
PageViewport pv)
Tie a PageViewport with an ID found on a child area of the PV. |
PageViewport |
getFirstPageViewportContaining(java.lang.String id)
Get the first PageViewport containing content generated
by the FO with the given id. |
PageViewport |
getLastPageViewportContaining(java.lang.String id)
Get the last PageViewport containing content generated
by the FO with the given id. |
java.util.List<PageViewport> |
getPageViewportsContainingID(java.lang.String id)
Get the list of page viewports that have an area with a given id. |
void |
signalIDProcessed(java.lang.String id)
Signals that all areas for the formatting object with the given ID have been generated. |
void |
signalPendingID(java.lang.String id)
This method tie an ID to the areaTreeHandler until this one is ready to be processed. |
void |
tryIDResolution(PageViewport pv)
Tries to resolve all unresolved ID references on the given page. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public IDTracker()
| Method Detail |
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public void associateIDWithPageViewport(java.lang.String id,
PageViewport pv)
id - the property ID of the areapv - a page viewport that contains the area with this IDpublic void signalPendingID(java.lang.String id)
id - the id of the object being processedpublic void signalIDProcessed(java.lang.String id)
id - the id of the formatting object which was just finishedpublic boolean alreadyResolvedID(java.lang.String id)
id - the id to check
public void tryIDResolution(PageViewport pv)
pv - page viewport whose ID refs to resolvepublic java.util.List<PageViewport> getPageViewportsContainingID(java.lang.String id)
id - the id to lookup
public PageViewport getFirstPageViewportContaining(java.lang.String id)
PageViewport containing content generated
by the FO with the given id.
id - the id
PageViewport for the id; null if
no matching PageViewport was foundpublic PageViewport getLastPageViewportContaining(java.lang.String id)
PageViewport containing content generated
by the FO with the given id.
id - the id
PageViewport for the id; null if
no matching PageViewport was found
public void addUnresolvedIDRef(java.lang.String idref,
Resolvable res)
idref - the idref whose target id has not yet been locatedres - the Resolvable object needing the idref to be resolved
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