diva.sketch.toolbox

Class CompositeTransducer

java.lang.Object

diva.sketch.toolbox.CompositeTransducer

All Implemented Interfaces:

Transducer, ClipboardOwner, Transferable, Cloneable

public class CompositeTransducer
extends Object
implements Transducer, Cloneable

A composite class that can be used to multiplex between different transducers. This transducer supports the union of all the data flavors of the children.

Version:

$Revision: 1.3 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Constructor Summary

Constructors

Constructor and Description
CompositeTransducer(Transducer[] children) This constructor should only be called once, to create the prototype object.

Method Summary

Modifier and Type	Method and Description
Object	getTransferData(DataFlavor flavor) Perform recognition on the sketch model and return the transfer data as a string, or as plain text (based on StringSelection's implementation of getTransferData();
DataFlavor[]	getTransferDataFlavors() Return the union of all the children's data flavors.
boolean	isDataFlavorSupported(DataFlavor in) Return whether any of the child transducers support the given flavor.
void	lostOwnership(Clipboard clipboard, Transferable contents) Do nothing.
Transducer	newInstance(SketchModel in) Apply the transducer to the given set of strokes by performing sketch recognition on the given strokes.
protected void	setSketchModel(SketchModel in) Set the sketch model for a new instance of the transducer.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeTransducer

public CompositeTransducer(Transducer[] children)

This constructor should only be called once, to create the prototype object. From then on, the newInstance() method should be used to construct

Method Detail

getTransferDataFlavors

public DataFlavor[] getTransferDataFlavors()

Return the union of all the children's data flavors.

Specified by:

getTransferDataFlavors in interface Transferable

getTransferData

public Object getTransferData(DataFlavor flavor)
                       throws UnsupportedFlavorException,
                              IOException

Perform recognition on the sketch model and return the transfer data as a string, or as plain text (based on StringSelection's implementation of getTransferData();

Specified by:

getTransferData in interface Transferable

Throws:

UnsupportedFlavorException

IOException

isDataFlavorSupported

public boolean isDataFlavorSupported(DataFlavor in)

Return whether any of the child transducers support the given flavor.

Specified by:

isDataFlavorSupported in interface Transferable

lostOwnership

public void lostOwnership(Clipboard clipboard,
                          Transferable contents)

Do nothing.

Specified by:

lostOwnership in interface ClipboardOwner

newInstance

public Transducer newInstance(SketchModel in)

Apply the transducer to the given set of strokes by performing sketch recognition on the given strokes.

Specified by:

newInstance in interface Transducer

setSketchModel

protected void setSketchModel(SketchModel in)
                       throws RuntimeException

Set the sketch model for a new instance of the transducer. Called by newInstance(). Sets up the mapping of flavors to the transducers that support those transducers.

Throws:

RuntimeException