IEventListener

All Known Subinterfaces:

ILocationExtractionStrategy, ITextExtractionStrategy

All Known Implementing Classes:

FilteredEventListener, FilteredTextEventListener, GlyphEventListener, GlyphTextEventListener, LocationTextExtractionStrategy, RegexBasedLocationExtractionStrategy, SimpleTextExtractionStrategy, TaggedPdfReaderTool.MarkedContentEventListener, TextMarginFinder
```
public interface IEventListener
```
A callback interface that receives notifications from the PdfCanvasProcessor as various events occur (see EventType).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`eventOccurred(IEventData data, EventType type)`	Called when some event occurs during parsing a content stream.
`java.util.Set<EventType>`	`getSupportedEvents()`	Provides the set of event types this listener supports.

- Method Detail
  - eventOccurred
```
void eventOccurred(IEventData data,
                   EventType type)
```
    Called when some event occurs during parsing a content stream.
    
    Parameters:
    
    data - Combines the data required for processing corresponding event type.
    
    type - Event type.
  - getSupportedEvents
```
java.util.Set<EventType> getSupportedEvents()
```
    Provides the set of event types this listener supports. Returns null if all possible event types are supported.
    
    Returns:
    
    Set of event types supported by this listener or null if all possible event types are supported.