uk.ac.starlink.ttools.plot2.task
Interface PointSelectionListener

All Superinterfaces:
EventListener

public interface PointSelectionListener
extends EventListener

Listens for events representing the selection of a data point in a plot. This usually happens when a user clicks on a plot.

Since:
21 Nov 2014
Author:
Mark Taylor

Method Summary
 void pointSelected(PointSelectionEvent evt)
          Called when an attempt has been made to select a point, usually by clicking on a plot.
 

Method Detail

pointSelected

void pointSelected(PointSelectionEvent evt)
Called when an attempt has been made to select a point, usually by clicking on a plot. The selection event is triggered by the attempt; the content of the event indicates whether any point(s) were actually selected.

Note that because identification of a selected point is a potentially expensive operation (it requires a scan of all plotted data points), this method is called asynchronously, rather than from the associated mouse listener. Invocation will however be on the Event Dispatch Thread as usual.

Parameters:
evt - selection event


Copyright © 2015 Central Laboratory of the Research Councils. All Rights Reserved.