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Class java.awt.dnd.DragSourceContext 

java.lang.Object
    |
    +----java.awt.dnd.DragSourceContext
public class DragSourceContext
extends Object
implements DragSourceListener

The DragSourceContext class is responsible for managing the initiator side of the Drag and Drop protocol. In particular it is responsible for managing event notifications to the DragSourceListener, and providing the Transferable state to enable the data transfer.

Since:
JDK1.2

Variable Index

o actions
o CHANGED
o component
o cursor
o cursorDirty
o DEFAULT
o dragSource
o ENTER
o image
o listener
o offset
o OVER
o peer
o transferable

Constructor Index

o DragSourceContext(DragSource, DragSourceContextPeer, Component, int, Cursor, Image, Point, Transferable, DragSourceListener)
construct a DragSourceContext (called from DragSource)

Method Index

o addDragSourceListener(DragSourceListener)
change the DragSourceListener
o cancelDrag()
cancel the operation
o checkCurrentCursor(int, int)
check the cursor for updates and implement defaults check the cursor for updates and implement defaults
o dragDropEnd(DragSourceDropEvent)
intercept the dragDropEnd event from the peer
o dragEnter(DragSourceDragEvent)
intercept the dragEnter event from the peer
o dragExit(DragSourceEvent)
intercept the dragExit event from the peer
o dragGestureChanged(DragSourceDragEvent)
intercept the dragGestureChanged event from the peer
o dragOver(DragSourceDragEvent)
intercept the dragOver event from the peer
o getComponent()
o getCursor()
o getDragImage()
o getDragImageOffset()
o getDragSource()
o getSourceActions()
o getTransferable()
o getTrigger()
o removeDragSourceListener(DragSourceListener)
change the DragSourceListener
o setCursor(Cursor)
change the drag cursor

Variables

o DEFAULT 
protected static final int DEFAULT
o ENTER 
protected static final int ENTER
o OVER 
protected static final int OVER
o CHANGED 
protected static final int CHANGED
o dragSource 
protected DragSource dragSource
o peer 
protected DragSourceContextPeer peer
o cursor 
protected Cursor cursor
o component 
protected Component component
o actions 
protected int actions
o image 
protected Image image
o offset 
protected Point offset
o transferable 
protected Transferable transferable
o listener 
protected DragSourceListener listener
o cursorDirty 
protected boolean cursorDirty

Constructors

o DragSourceContext 
public DragSourceContext(DragSource ds,
                         DragSourceContextPeer dscp,
                         Component c,
                         int a,
                         Cursor dragCursor,
                         Image dragImage,
                         Point offset,
                         Transferable t,
                         DragSourceListener dsl)
construct a DragSourceContext (called from DragSource)

Parameters:
ds - The DragSource that originated this operation
dscp - The DragSourceContextPeer for this operation
a - The operation(s)
dragCursor - The initial Cursor
dragImage - The image to drag (or null)
offset - The offset of the image origin from the hotspot at the instant of the triggering event
t - The Transferable
dsl - The DragSourceListener

Methods

o getDragSource 
public DragSource getDragSource()
Returns:
the DragSource that instantiated this DragSourceContext
o getComponent 
public Component getComponent()
Returns:
the Component that started the Drag
o getTrigger 
public AWTEvent getTrigger()
Returns:
the Event that triggered the Drag
o cancelDrag 
public void cancelDrag() throws InvalidDnDOperationException
cancel the operation

o getSourceActions 
public int getSourceActions()
Returns:
the current actions
o setCursor 
public void setCursor(Cursor c)
change the drag cursor

o getCursor 
public Cursor getCursor()
Returns:
the current drag cursor
o getDragImage 
public Image getDragImage()
Returns:
the drag image
o getDragImageOffset 
public Point getDragImageOffset()
Returns:
the image offset
o addDragSourceListener 
public void addDragSourceListener(DragSourceListener dsl) throws TooManyListenersException
change the DragSourceListener

o removeDragSourceListener 
public void removeDragSourceListener(DragSourceListener dsl)
change the DragSourceListener

o dragEnter 
public void dragEnter(DragSourceDragEvent dsde)
intercept the dragEnter event from the peer

o dragOver 
public void dragOver(DragSourceDragEvent dsde)
intercept the dragOver event from the peer

o dragExit 
public void dragExit(DragSourceEvent dse)
intercept the dragExit event from the peer

o dragGestureChanged 
public void dragGestureChanged(DragSourceDragEvent dsde)
intercept the dragGestureChanged event from the peer

o dragDropEnd 
public void dragDropEnd(DragSourceDropEvent dsde)
intercept the dragDropEnd event from the peer

o getTransferable 
public Transferable getTransferable()
o checkCurrentCursor 
protected void checkCurrentCursor(int target,
                                  int status)
check the cursor for updates and implement defaults check the cursor for updates and implement defaults 

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