153 lines
4.5 KiB
Java
153 lines
4.5 KiB
Java
/* DropTargetDragEvent.java --
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Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.dnd;
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import java.awt.Point;
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import java.awt.datatransfer.DataFlavor;
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import java.awt.datatransfer.Transferable;
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import java.util.List;
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/**
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* @since 1.2
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*/
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public class DropTargetDragEvent extends DropTargetEvent
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{
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/**
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* Compatible with 1.2+
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*/
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private static final long serialVersionUID = -8422265619058953682L;
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private final int dropAction;
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private final int srcActions;
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private final Point location;
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/**
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* Initializes a <code>DropTargetDragEvent</code>.
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*
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* @exception IllegalArgumentException If dropAction is not one of DnDConstants,
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* srcActions is not a bitwise mask of DnDConstants, or dtc is null.
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* @exception NullPointerException If location is null.
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*/
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public DropTargetDragEvent (DropTargetContext context, Point location,
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int dropAction, int srcActions)
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{
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super (context);
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if (location == null)
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throw new NullPointerException ();
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if (context == null)
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throw new IllegalArgumentException ();
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if (dropAction != DnDConstants.ACTION_NONE
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&& dropAction != DnDConstants.ACTION_COPY
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&& dropAction != DnDConstants.ACTION_MOVE
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&& dropAction != DnDConstants.ACTION_COPY_OR_MOVE
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&& dropAction != DnDConstants.ACTION_LINK
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&& dropAction != DnDConstants.ACTION_REFERENCE)
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throw new IllegalArgumentException ();
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int srcActionsMask = DnDConstants.ACTION_NONE
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| DnDConstants.ACTION_COPY
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| DnDConstants.ACTION_MOVE
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| DnDConstants.ACTION_COPY_OR_MOVE
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| DnDConstants.ACTION_LINK
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| DnDConstants.ACTION_REFERENCE;
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if (~(srcActions ^ srcActionsMask) != 0)
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throw new IllegalArgumentException ();
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this.dropAction = dropAction;
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this.srcActions = srcActions;
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this.location = location;
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}
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public void acceptDrag (int dragOperation)
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{
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context.acceptDrag (dragOperation);
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}
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public DataFlavor[] getCurrentDataFlavors ()
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{
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return context.getCurrentDataFlavors ();
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}
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public List<DataFlavor> getCurrentDataFlavorsAsList ()
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{
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return context.getCurrentDataFlavorsAsList ();
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}
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public int getDropAction()
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{
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return dropAction & ((DropTargetContext) source).getTargetActions();
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}
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public Point getLocation ()
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{
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return location;
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}
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public int getSourceActions ()
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{
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return srcActions;
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}
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public boolean isDataFlavorSupported (DataFlavor df)
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{
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return context.isDataFlavorSupported (df);
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}
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public void rejectDrag ()
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{
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context.rejectDrag ();
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}
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/**
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* TODO
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*
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* @return
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*
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* @since 1.5
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*/
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public Transferable getTransferable()
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{
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return context.getTransferable();
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}
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} // class DropTargetDragEvent
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