ptolemy.vergil.toolbox
Class PtolemyTransferable

java.lang.Object
  ptolemy.vergil.toolbox.PtolemyTransferable

All Implemented Interfaces:

java.awt.datatransfer.Transferable, java.io.Serializable

public class PtolemyTransferable
extends java.lang.Object
implements java.awt.datatransfer.Transferable, java.io.Serializable

A transferable object that contains a local JVM reference to a number of named objects. To get a reference to an iterator on the objects, request data with the data flavor given in the static namedObjFlavor variable. This class will also return a MoML representation of the objects, if data is requested with the DataFlavor.stringFlavor or DataFlavor.plainTextFlavor.

Since:

Ptolemy II 1.0

Version:

$Id: PtolemyTransferable.java 57040 2010-01-27 20:52:32Z cxh $

Author:

Steve Neuendorffer

See Also:

Serialized Form

Accepted Rating:

Red (johnr)

Proposed Rating:

Red (eal)

Field Summary

private java.awt.datatransfer.DataFlavor[]	_flavors
private java.util.List	_objectList
static java.awt.datatransfer.DataFlavor	namedObjFlavor The flavor that requests a local virtual machine reference to the contained object.

Constructor Summary

PtolemyTransferable()
Create a new transferable object that contains no objects.

Method Summary

java.lang.String	_getMoML() Return a string with a MoML description of all the objects in the list.
void	addObject(NamedObj object) Add the given named object to the objects contained in this transferable.
java.lang.Object	getTransferData(java.awt.datatransfer.DataFlavor flavor) Return an object that represents the data contained within this transferable with the given flavor.
java.awt.datatransfer.DataFlavor[]	getTransferDataFlavors() Return the data flavors that this transferable supports.
boolean	isDataFlavorSupported(java.awt.datatransfer.DataFlavor flavor) Return true if the given data flavor is supported.
void	removeObject(NamedObj object) Remove the given object from this transferable.

Methods inherited from class java.lang.Object

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

Field Detail

namedObjFlavor

public static final java.awt.datatransfer.DataFlavor namedObjFlavor

The flavor that requests a local virtual machine reference to the contained object.

_flavors

private final java.awt.datatransfer.DataFlavor[] _flavors

_objectList

private java.util.List _objectList

Constructor Detail

PtolemyTransferable

public PtolemyTransferable()

Create a new transferable object that contains no objects.

Method Detail

addObject

public void addObject(NamedObj object)

Add the given named object to the objects contained in this transferable. If the object already exists in this transferable, then do not add it again.

Parameters:

object - The object to be added to this transferable.

getTransferDataFlavors

public java.awt.datatransfer.DataFlavor[] getTransferDataFlavors()

Return the data flavors that this transferable supports.

Specified by:

getTransferDataFlavors in interface java.awt.datatransfer.Transferable

Returns:

The data flavors.

isDataFlavorSupported

public boolean isDataFlavorSupported(java.awt.datatransfer.DataFlavor flavor)

Return true if the given data flavor is supported.

Specified by:

isDataFlavorSupported in interface java.awt.datatransfer.Transferable

Parameters:

flavor - The data flavor that is searched for.

Returns:

true if the given data flavor is supported.

getTransferData

public java.lang.Object getTransferData(java.awt.datatransfer.DataFlavor flavor)
                                 throws java.awt.datatransfer.UnsupportedFlavorException,
                                        java.io.IOException

Return an object that represents the data contained within this transferable with the given flavor. If the flavor is namedObjFlavor, return an iterator of the objects that this transferable refers to. If the flavor is DataFlavor.plainTextFlavor, return an InputStream that contains a MoML representation of the objects. If the flavor is DataFlavor.stringFlavor return a string that contains the MoML representation.

Specified by:

getTransferData in interface java.awt.datatransfer.Transferable

Parameters:

flavor - The data flavor.

Returns:

An object with the given flavor.

Throws:

java.awt.datatransfer.UnsupportedFlavorException - If the given flavor is not supported.

java.io.IOException - If thrown while creating the MoML.

removeObject

public void removeObject(NamedObj object)

Remove the given object from this transferable. If the object does not exist in the transferable, then do nothing.

Parameters:

object - The object to be removed.

_getMoML

public java.lang.String _getMoML()
                          throws java.io.IOException

Return a string with a MoML description of all the objects in the list.

Returns:

the MoML description.

Throws:

java.io.IOException - If thrown while creating the MoML.