File	Doc	Category	Size	Date	Package
DnDEventMulticaster.java	API Doc	Java SE 5 API	7404	Fri Aug 26 14:56:48 BST 2005	java.awt.dnd

DnDEventMulticaster

• java.lang.Object
  • java.awt.AWTEventMulticaster

Fields Summary

Constructors Summary
protected DnDEventMulticaster(EventListener a, EventListener b) Creates an event multicaster instance which chains listener-a with listener-b. Input parameters a and b should not be null, though implementations may vary in choosing whether or not to throw NullPointerException in that case. param a listener-a param b listener-b super(a,b);

Methods Summary
public static java.awt.dnd.DragSourceListener	add(java.awt.dnd.DragSourceListener a, java.awt.dnd.DragSourceListener b) Adds drag-source-listener-a with drag-source-listener-b and returns the resulting multicast listener. param a drag-source-listener-a param b drag-source-listener-b return (DragSourceListener)addInternal(a, b);
public static java.awt.dnd.DragSourceMotionListener	add(java.awt.dnd.DragSourceMotionListener a, java.awt.dnd.DragSourceMotionListener b) Adds drag-source-motion-listener-a with drag-source-motion-listener-b and returns the resulting multicast listener. param a drag-source-motion-listener-a param b drag-source-motion-listener-b return (DragSourceMotionListener)addInternal(a, b);
protected static java.util.EventListener	addInternal(java.util.EventListener a, java.util.EventListener b) Returns the resulting multicast listener from adding listener-a and listener-b together. If listener-a is null, it returns listener-b; If listener-b is null, it returns listener-a If neither are null, then it creates and returns a new AWTEventMulticaster instance which chains a with b. param a event listener-a param b event listener-b if (a == null) return b; if (b == null) return a; return new DnDEventMulticaster(a, b);
public void	dragDropEnd(java.awt.dnd.DragSourceDropEvent dsde) Handles the DragSourceDropEvent by invoking dragDropEnd on listener-a and listener-b. param dsde the DragSourceDropEvent ((DragSourceListener)a).dragDropEnd(dsde); ((DragSourceListener)b).dragDropEnd(dsde);
public void	dragEnter(java.awt.dnd.DragSourceDragEvent dsde) Handles the DragSourceDragEvent by invoking dragEnter on listener-a and listener-b. param dsde the DragSourceDragEvent ((DragSourceListener)a).dragEnter(dsde); ((DragSourceListener)b).dragEnter(dsde);
public void	dragExit(java.awt.dnd.DragSourceEvent dse) Handles the DragSourceEvent by invoking dragExit on listener-a and listener-b. param dse the DragSourceEvent ((DragSourceListener)a).dragExit(dse); ((DragSourceListener)b).dragExit(dse);
public void	dragMouseMoved(java.awt.dnd.DragSourceDragEvent dsde) Handles the DragSourceDragEvent by invoking dragMouseMoved on listener-a and listener-b. param dsde the DragSourceDragEvent ((DragSourceMotionListener)a).dragMouseMoved(dsde); ((DragSourceMotionListener)b).dragMouseMoved(dsde);
public void	dragOver(java.awt.dnd.DragSourceDragEvent dsde) Handles the DragSourceDragEvent by invoking dragOver on listener-a and listener-b. param e the DragSourceDragEvent ((DragSourceListener)a).dragOver(dsde); ((DragSourceListener)b).dragOver(dsde);
public void	dropActionChanged(java.awt.dnd.DragSourceDragEvent dsde) Handles the DragSourceDragEvent by invoking dropActionChanged on listener-a and listener-b. param dsde the DragSourceDragEvent ((DragSourceListener)a).dropActionChanged(dsde); ((DragSourceListener)b).dropActionChanged(dsde);
public static java.awt.dnd.DragSourceListener	remove(java.awt.dnd.DragSourceListener l, java.awt.dnd.DragSourceListener oldl) Removes the old drag-source-listener from drag-source-listener-l and returns the resulting multicast listener. param l drag-source-listener-l param oldl the drag-source-listener being removed return (DragSourceListener)removeInternal(l, oldl);
public static java.awt.dnd.DragSourceMotionListener	remove(java.awt.dnd.DragSourceMotionListener l, java.awt.dnd.DragSourceMotionListener ol) Removes the old drag-source-motion-listener from drag-source-motion-listener-l and returns the resulting multicast listener. param l drag-source-motion-listener-l param ol the drag-source-motion-listener being removed return (DragSourceMotionListener)removeInternal(l, ol);
protected java.util.EventListener	remove(java.util.EventListener oldl) Removes a listener from this multicaster and returns the resulting multicast listener. param oldl the listener to be removed if (oldl == a) return b; if (oldl == b) return a; EventListener a2 = removeInternal(a, oldl); EventListener b2 = removeInternal(b, oldl); if (a2 == a && b2 == b) { return this; // it's not here } return addInternal(a2, b2);
protected static java.util.EventListener	removeInternal(java.util.EventListener l, java.util.EventListener oldl) Returns the resulting multicast listener after removing the old listener from listener-l. If listener-l equals the old listener OR listener-l is null, returns null. Else if listener-l is an instance of AWTEventMulticaster, then it removes the old listener from it. Else, returns listener l. param l the listener being removed from param oldl the listener being removed if (l == oldl || l == null) { return null; } else if (l instanceof DnDEventMulticaster) { return ((DnDEventMulticaster)l).remove(oldl); } else { return l; // it's not here }
protected static void	save(java.io.ObjectOutputStream s, java.lang.String k, java.util.EventListener l) AWTEventMulticaster.save(s, k, l);