de.uni_tuebingen.sfb.lichtenstein.UI
Class FormulaTransferHandler

java.lang.Object
  javax.swing.TransferHandler
      de.uni_tuebingen.sfb.lichtenstein.UI.FormulaTransferHandler

All Implemented Interfaces:

Serializable

public class FormulaTransferHandler
extends TransferHandler

A transfer handler for formulas. Based on Sun’s Swing DnD tutorial.

Author:

Hendrik Maryns

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.TransferHandler

TransferHandler.DropLocation, TransferHandler.TransferSupport

Field Summary

Fields inherited from class javax.swing.TransferHandler

COPY, COPY_OR_MOVE, LINK, MOVE, NONE

Constructor Summary

FormulaTransferHandler()
Initialize the formula transfer handler.

Method Summary

boolean	canImport(TransferHandler.TransferSupport info)
protected Transferable	createTransferable(JComponent c) Puts the selected formulas from the list (c has to be a JList) into a DataHandler as a local JVM object.
protected void	exportDone(JComponent c, Transferable data, int action) Remove the formulas moved.
int	getSourceActions(JComponent c)
boolean	importData(TransferHandler.TransferSupport info) Put the formulas at the drop location in the order of the list.

Methods inherited from class javax.swing.TransferHandler

canImport, exportAsDrag, exportToClipboard, getCopyAction, getCutAction, getPasteAction, getVisualRepresentation, importData

Methods inherited from class java.lang.Object

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

Constructor Detail

FormulaTransferHandler

public FormulaTransferHandler()

Initialize the formula transfer handler. Sets the supported flavors. For now these are:

• new ActivationDataFlavor(Formula.class, DataFlavor.javaJVMLocalObjectMimeType, "Arrays of formulas");

Method Detail

createTransferable

protected Transferable createTransferable(JComponent c)

Puts the selected formulas from the list (c has to be a JList) into a DataHandler as a local JVM object.

Overrides:

createTransferable in class TransferHandler

Parameters:

c - Has to be a JList.

canImport

public boolean canImport(TransferHandler.TransferSupport info)

Overrides:

canImport in class TransferHandler

Returns:

Only drops of Formulas are allowed.

getSourceActions

public int getSourceActions(JComponent c)

Overrides:

getSourceActions in class TransferHandler

Returns:

Support both COPY and MOVE.

importData

public boolean importData(TransferHandler.TransferSupport info)

Put the formulas at the drop location in the order of the list. If the location is invalid, put them at the beginning.

Overrides:

importData in class TransferHandler

exportDone

protected void exportDone(JComponent c,
                          Transferable data,
                          int action)

Remove the formulas moved. Due to a bug in Swing, this method is complex. Simplify it if the bug is fixed.

Overrides:

exportDone in class TransferHandler