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

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

- - ### Method Detail

    - #### retrieveHeadlessEvents

          java.util.List<java.util.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(java.util.List<java.util.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.