File	Doc	Category	Size	Date	Package
DropTargetContext.java	API Doc	Java SE 5 API	12411	Fri Aug 26 14:56:48 BST 2005	java.awt.dnd

DropTargetContext

• java.lang.Object

Fields Summary
private static final long	serialVersionUID
private DropTarget	dropTarget The DropTarget associated with this DropTargetContext.
private transient DropTargetContextPeer	dropTargetContextPeer
private transient Transferable	transferable

Constructors Summary
DropTargetContext(DropTarget dt) Construct a DropTargetContext given a specified DropTarget. param dt the DropTarget to associate with super(); dropTarget = dt;

Methods Summary
protected void	acceptDrag(int dragOperation) accept the Drag. param dragOperation the supported action(s) DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { peer.acceptDrag(dragOperation); }
protected void	acceptDrop(int dropOperation) called to signal that the drop is acceptable using the specified operation. must be called during DropTargetListener.drop method invocation. param dropOperation the supported action(s) DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { peer.acceptDrop(dropOperation); }
public void	addNotify(java.awt.dnd.peer.DropTargetContextPeer dtcp) Called when associated with the DropTargetContextPeer. param dtcp the DropTargetContextPeer dropTargetContextPeer = dtcp;
protected java.awt.datatransfer.Transferable	createTransferableProxy(java.awt.datatransfer.Transferable t, boolean local) Creates a TransferableProxy to proxy for the specified Transferable. param t the Transferable to be proxied param local true if t represents the result of a local drag-n-drop operation. return the new TransferableProxy instance. return new TransferableProxy(t, local);
public void	dropComplete(boolean success) This method signals that the drop is completed and if it was successful or not. param success true for success, false if not throws InvalidDnDOperationException if a drop is not outstanding/extant DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { peer.dropComplete(success); }
public java.awt.Component	getComponent() This method returns the Component associated with this DropTargetContext. return the Component associated with this Context return dropTarget.getComponent();
protected java.awt.datatransfer.DataFlavor[]	getCurrentDataFlavors() get the available DataFlavors of the Transferable operand of this operation. return a DataFlavor[] containing the supported DataFlavors of the Transferable operand. DropTargetContextPeer peer = getDropTargetContextPeer(); return peer != null ? peer.getTransferDataFlavors() : new DataFlavor[0];
protected java.util.List	getCurrentDataFlavorsAsList() This method returns a the currently available DataFlavors of the Transferable operand as a java.util.List. return the currently available DataFlavors as a java.util.List return Arrays.asList(getCurrentDataFlavors());
public java.awt.dnd.DropTarget	getDropTarget() This method returns the DropTarget associated with this DropTargetContext. return the DropTarget associated with this DropTargetContext return dropTarget;
java.awt.dnd.peer.DropTargetContextPeer	getDropTargetContextPeer() Get the DropTargetContextPeer return the platform peer return dropTargetContextPeer;
protected int	getTargetActions() This method returns an int representing the current actions this DropTarget will accept. return the current actions acceptable to this DropTarget DropTargetContextPeer peer = getDropTargetContextPeer(); return ((peer != null) ? peer.getTargetActions() : dropTarget.getDefaultActions() );
protected java.awt.datatransfer.Transferable	getTransferable() get the Transferable (proxy) operand of this operation throws InvalidDnDOperationException if a drag is not outstanding/extant return the Transferable DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer == null) { throw new InvalidDnDOperationException(); } else { if (transferable == null) { Transferable t = peer.getTransferable(); boolean isLocal = peer.isTransferableJVMLocal(); synchronized (this) { if (transferable == null) { transferable = createTransferableProxy(t, isLocal); } } } return transferable; }
protected boolean	isDataFlavorSupported(java.awt.datatransfer.DataFlavor df) This method returns a boolean indicating if the given DataFlavor is supported by this DropTargetContext. param df the DataFlavor return if the DataFlavor specified is supported return getCurrentDataFlavorsAsList().contains(df);
protected void	rejectDrag() reject the Drag. DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { peer.rejectDrag(); }
protected void	rejectDrop() called to signal that the drop is unacceptable. must be called during DropTargetListener.drop method invocation. DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { peer.rejectDrop(); }
public void	removeNotify() Called when disassociated with the DropTargetContextPeer. dropTargetContextPeer = null; transferable = null;
protected void	setTargetActions(int actions) This method sets the current actions acceptable to this DropTarget. param actions an int representing the supported action(s) DropTargetContextPeer peer = getDropTargetContextPeer(); if (peer != null) { synchronized (peer) { peer.setTargetActions(actions); getDropTarget().doSetDefaultActions(actions); } } else { getDropTarget().doSetDefaultActions(actions); }