Package weka.gui.beans

# Interface HeadlessEventCollector

All Known Implementing Classes:
  `AttributeSummarizer`, `CostBenefitAnalysis`, `DataVisualizer`, `ModelPerformanceChart`, `ScatterPlotMatrix`, `TextViewer`

public interface HeadlessEventCollector
Interface for Knowledge Flow components that (typically) provide an interactive graphical visualization to implement. This allows events that would normally be processed to provide a graphical display to be collected and retrieved when running in headless mode (perhaps on a server for example). A copy of the component that is running with access to a display can be passed the list of events in order to construct its display-dependent output.

Version:
  $Revision: 8034 $
Author:
  Mark Hall (mhall{[at]}pentaho{[dot]}com).

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `processHeadlessEvents(List<EventObject> headless)`
  Process a list of events that have been collected earlier.
  `List<EventObject>`
  `retrieveHeadlessEvents()`
  Get the list of events processed in headless mode.

- ## Method Details

  - ### retrieveHeadlessEvents

    List<EventObject> retrieveHeadlessEvents()
    Get the list of events processed in headless mode. May return null or an empty list if not running in headless mode or no events were processed
    Returns:
      a list of EventObjects or null.

  - ### processHeadlessEvents

    void processHeadlessEvents(List<EventObject> headless)
    Process a list of events that have been collected earlier. Has no affect if the component is running in headless mode.
    Parameters:
      `headless` - a list of EventObjects to process.