org.artoflife.gui.population
Class PopulationViewTransferHandler

java.lang.Object
  |
  +--javax.swing.TransferHandler
        |
        +--org.artoflife.gui.population.PopulationViewTransferHandler

All Implemented Interfaces:

java.io.Serializable

public class PopulationViewTransferHandler

extends javax.swing.TransferHandler

Handles transfer of Individuals from a PopulationView for DnD and clipboard operations. Creates PaintableIndividualTransferables only for Individuals with a org.artoflife.gp.paintable.PaintablePhenotype.

Author:

Steve Meyfroidt

See Also:

Serialized Form

To do:

nicer error handling for incompatible genoypes

Field Summary

Fields inherited from class javax.swing.TransferHandler

COPY, COPY_OR_MOVE, MOVE, NONE

Constructor Summary

PopulationViewTransferHandler()

Method Summary

boolean	canImport(javax.swing.JComponent comp, java.awt.datatransfer.DataFlavor[] transferFlavors) A PopulationView can import two flavors: PaintableIndividualTransferable.SERIALISED_INDIVIDUAL_FLAVOR PaintableIndividualTransferable.INDIVIDUAL_FILE_FLAVOR
protected java.awt.datatransfer.Transferable	createTransferable(javax.swing.JComponent c)
protected void	exportDone(javax.swing.JComponent source, java.awt.datatransfer.Transferable data, int action) After a drop has been completed (or an export done, which is overkill since this includes clipboard operations), clear the per-VM drag state held in PopulationView.
int	getSourceActions(javax.swing.JComponent c)
javax.swing.Icon	getVisualRepresentation(java.awt.datatransfer.Transferable t)
boolean	importData(javax.swing.JComponent comp, java.awt.datatransfer.Transferable t) Called by the default javax.swing.TransferHandler.DropHandler but we install a custom PopulationViewDropTargetListener that calls importData(JComponent, Transferable, Point) instead, so this method will fail if called (assertion failure).
boolean	importData(javax.swing.JComponent comp, java.awt.datatransfer.Transferable t, java.awt.Point location) An alternative to the usual importData(JComponent, Transferable) called by the default DropHandler, but not when a PopulationView uses one of these TransferHandlers to handle DnD.

Methods inherited from class javax.swing.TransferHandler

exportAsDrag, exportToClipboard, getCopyAction, getCutAction, getPasteAction

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PopulationViewTransferHandler

public PopulationViewTransferHandler()

Method Detail

canImport

public boolean canImport(javax.swing.JComponent comp,
                         java.awt.datatransfer.DataFlavor[] transferFlavors)

A PopulationView can import two flavors:

• PaintableIndividualTransferable.SERIALISED_INDIVIDUAL_FLAVOR
• PaintableIndividualTransferable.INDIVIDUAL_FILE_FLAVOR

Overrides:

canImport in class javax.swing.TransferHandler

Parameters:

comp - must be a PopulationView, else assertion failure

See Also:

TransferHandler.canImport(JComponent, DataFlavor[])

createTransferable

protected java.awt.datatransfer.Transferable createTransferable(javax.swing.JComponent c)

Overrides:

createTransferable in class javax.swing.TransferHandler

Parameters:

c - must be a PopulationView, else assertion failure

Returns:

a org.artoflife.gui.population.PaintableIndividualTransferable for the currently selected Individual which must not be null

See Also:

TransferHandler.createTransferable(JComponent)

exportDone

protected void exportDone(javax.swing.JComponent source,
                          java.awt.datatransfer.Transferable data,
                          int action)

After a drop has been completed (or an export done, which is overkill since this includes clipboard operations), clear the per-VM drag state held in PopulationView. A hack to overcome Sun's DnD impl.

Overrides:

exportDone in class javax.swing.TransferHandler

See Also:

TransferHandler.exportDone(JComponent, Transferable, int)

getSourceActions

public int getSourceActions(javax.swing.JComponent c)

Overrides:

getSourceActions in class javax.swing.TransferHandler

Returns:

DnDConstants.ACTION_COPY_OR_MOVE

See Also:

TransferHandler.getSourceActions(JComponent)

getVisualRepresentation

public javax.swing.Icon getVisualRepresentation(java.awt.datatransfer.Transferable t)

Overrides:

getVisualRepresentation in class javax.swing.TransferHandler

Returns:

an Icon fetched from the PaintableIndividualTransferable (there ought to be a cleaner way of doing this though)

See Also:

TransferHandler.getVisualRepresentation(Transferable)

importData

public boolean importData(javax.swing.JComponent comp,
                          java.awt.datatransfer.Transferable t)

Called by the default javax.swing.TransferHandler.DropHandler but we install a custom PopulationViewDropTargetListener that calls importData(JComponent, Transferable, Point) instead, so this method will fail if called (assertion failure).

Overrides:

importData in class javax.swing.TransferHandler

To do:

this will get called on paste however, which will fail

importData

public boolean importData(javax.swing.JComponent comp,
                          java.awt.datatransfer.Transferable t,
                          java.awt.Point location)

An alternative to the usual importData(JComponent, Transferable) called by the default DropHandler, but not when a PopulationView uses one of these TransferHandlers to handle DnD.

Note that the INDIVIDUAL_FILE_FLAVOR handling accepts multiple files.

See Also:

canImport(JComponent, DataFlavor[]), TransferHandler.importData(JComponent, Transferable)