dragsourcecontextpeer.java

来自「java1.6众多例子参考」· Java 代码 · 共 64 行

/*
 * @(#)DragSourceContextPeer.java	1.16 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.awt.dnd.peer;

import java.awt.event.InputEvent;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Image;
import java.awt.Point;
import java.awt.Rectangle;

import java.awt.datatransfer.Transferable;

import java.awt.dnd.DragSource;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragSourceContext;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.InvalidDnDOperationException;


/**
 * <p>
 * This interface is supplied by the underlying window system platform to
 * expose the behaviors of the Drag and Drop system to an originator of
 * the same
 * </p>
 *
 * @version 	1.16, 11/17/05
 * @since 1.2
 *
 */

public interface DragSourceContextPeer {

    /**
     * start a drag
     */

    void startDrag(DragSourceContext dsc, Cursor c, Image dragImage, Point imageOffset) throws InvalidDnDOperationException;

    /**
     * return the current drag cursor
     */

    Cursor getCursor();

    /**
     * set the current drag cursor
     */

    void setCursor(Cursor c) throws InvalidDnDOperationException;

    /**
     * notify the peer that the Transferables DataFlavors have changed
     */

    void transferablesFlavorsChanged();
}