uk.ac.starlink.topcat.activate
Class UrlColumnConfigurator.LocationColumnActivator

java.lang.Object
  extended by uk.ac.starlink.topcat.activate.UrlColumnConfigurator.LocationColumnActivator
All Implemented Interfaces:
Activator
Direct Known Subclasses:
UrlColumnConfigurator.UrlColumnActivator
Enclosing class:
UrlColumnConfigurator

protected abstract static class UrlColumnConfigurator.LocationColumnActivator
extends Object
implements Activator

Utility class providing a partial Activator implementation for UrlColumnConfigurators that want a location (file or URL) value.


Constructor Summary
protected UrlColumnConfigurator.LocationColumnActivator(uk.ac.starlink.table.ColumnData cdata, boolean invokeOnEdt)
          Constructor.
 
Method Summary
protected abstract  Outcome activateLocation(String loc, long lrow)
          Consumes the location string corresponding to the row to perform the activation action.
 Outcome activateRow(long lrow, ActivationMeta meta)
          Invokes some kind of action on the table row indicated by a given index.
 boolean invokeOnEdt()
          Indicates how this activator's activateRow method should be executed.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UrlColumnConfigurator.LocationColumnActivator

protected UrlColumnConfigurator.LocationColumnActivator(uk.ac.starlink.table.ColumnData cdata,
                                                        boolean invokeOnEdt)
Constructor.

Parameters:
cdata - column data containing location strings
invokeOnEdt - whether to invoke on the EDT
Method Detail

activateRow

public Outcome activateRow(long lrow,
                           ActivationMeta meta)
Description copied from interface: Activator
Invokes some kind of action on the table row indicated by a given index.

Specified by:
activateRow in interface Activator
Parameters:
lrow - row index
meta - additional activation metadata if available; may be null if no special information is available
Returns:
outcome

invokeOnEdt

public boolean invokeOnEdt()
Description copied from interface: Activator
Indicates how this activator's activateRow method should be executed. If true, it is intended to be invoked synchronously on the Event Dispatch Thread. If false, it is intended to be invoked asynchronously on some less time-critical thread. False should be returned if this activator may be time-consuming.

Specified by:
invokeOnEdt in interface Activator
Returns:
true if it is a good idea to invoke this activator on the EDT

activateLocation

protected abstract Outcome activateLocation(String loc,
                                            long lrow)
Consumes the location string corresponding to the row to perform the activation action.

Parameters:
loc - location string, not null or blank
lrow - row index
Returns:
outcome


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