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

Modifier and Type	Method and Description
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