Eclipse GEF and Draw2d Plug-in Developer Guide (Galileo) - SimpleObjectTransfer (Eclipse GEF API Specification)

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org.eclipse.gef.dnd
Class SimpleObjectTransfer

java.lang.Object
  ByteArrayTransfer
      
org.eclipse.gef.dnd.SimpleObjectTransfer

Direct Known Subclasses:: TemplateTransfer

public abstract class SimpleObjectTransfer
extends ByteArrayTransfer

Holds on to the object being transferred in a field so that DropTargetListeners can know what's being dragged before the drop occurs. The object isn't converted to bytes, so this Transfer will only work when dragging within the same instance of Eclipse. Subclasses should maintain a single instance of their Transfer and provide a static method to obtain that instance.

See Also:: Serialized Form

Constructor Summary

SimpleObjectTransfer ()


Method Summary

java.lang.Object getObject ()
          Returns the Object.

void javaToNative (java.lang.Object object, TransferData transferData)
          The data object is not converted to bytes.

java.lang.Object nativeToJava (TransferData transferData)
          The data object is not converted to bytes.

void setObject (java.lang.Object obj)
          Sets the Object.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleObjectTransfer

public SimpleObjectTransfer()

Method Detail

getObject

public java.lang.Object getObject()

Returns the Object.

Returns:: The Object

javaToNative

public void javaToNative(java.lang.Object object,
                         TransferData transferData)

The data object is not converted to bytes. It is held onto in a field. Instead, a checksum is written out to prevent unwanted drags across mulitple running copies of Eclipse.

See Also:: org.eclipse.swt.dnd.Transfer#javaToNative(Object, TransferData)

nativeToJava

public java.lang.Object nativeToJava(TransferData transferData)

The data object is not converted to bytes. It is held onto in a field. Instead, a checksum is written out to prevent unwanted drags across mulitple running. copies of Eclipse.

See Also:: org.eclipse.swt.dnd.Transfer#nativeToJava(TransferData)

setObject

public void setObject(java.lang.Object obj)

Sets the Object.

Parameters:: obj - The Object