org.eclipse.jface.text.presentation
Interface IPresentationDamager

All Known Implementing Classes:

DefaultDamagerRepairer

public interface IPresentationDamager

Presentation damagers are used by a presentation reconciler to determine the region of the document's presentation which must be rebuilt because of the occurrence of a document change. A presentation damager is assumed to be specific for a particular document content type. A presentation damager is expected to return a damage region which is a valid input for a presentation repairer. I.e. having access to the damage region only the repairer must be able to derive all the information neede to sucessfully repair this region.

This interface must either be implemented by clients or clients use the rule-based default implementation RuleBasedDamagerRepairer. Implementers should be registered with a presentation reconciler in order get involved in the reconciling process.

See Also:

IPresentationReconciler, IDocument, DocumentEvent, IPresentationRepairer

Method Summary

IRegion	getDamageRegion(ITypedRegion partition, DocumentEvent event, boolean documentPartitioningChanged) Returns the damage in the document's presentation caused by the given document change.
void	setDocument(IDocument document) Tells the presentation damager on which document it will work.

Method Detail

setDocument

public void setDocument(IDocument document)

Tells the presentation damager on which document it will work.

Parameters:

document - the damager's working document

getDamageRegion

public IRegion getDamageRegion(ITypedRegion partition,
                               DocumentEvent event,
                               boolean documentPartitioningChanged)

Returns the damage in the document's presentation caused by the given document change. The damage is restricted to the specified partition for which the presentation damager is responsible. The damage may also depend on whether the document change also caused changes of the document's partitioning.

Parameters:

partition - the partition inside which the damage must be determined

event - the event describing the change whose damage must be determined

Returns:

the computed damage