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Diffstat (limited to 'libjava/classpath/java/awt/dnd/DropTarget.java')
-rw-r--r-- | libjava/classpath/java/awt/dnd/DropTarget.java | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/dnd/DropTarget.java b/libjava/classpath/java/awt/dnd/DropTarget.java new file mode 100644 index 00000000000..9fd7ef896fb --- /dev/null +++ b/libjava/classpath/java/awt/dnd/DropTarget.java @@ -0,0 +1,293 @@ +/* DropTarget.java -- + Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.dnd; + +import java.awt.Component; +import java.awt.GraphicsEnvironment; +import java.awt.HeadlessException; +import java.awt.Point; +import java.awt.datatransfer.FlavorMap; +import java.awt.event.ActionEvent; +import java.awt.event.ActionListener; +import java.io.Serializable; +import java.util.EventListener; +import java.util.TooManyListenersException; + +/** + * @author Michael Koch + * @since 1.2 + */ +public class DropTarget + implements DropTargetListener, EventListener, Serializable +{ + /** + * Compatible with JDK 1.2+ + */ + private static final long serialVersionUID = -6283860791671019047L; + + /** @specnote According to the online documentation, this is + * protected, but in reality it is public. */ + public static class DropTargetAutoScroller + implements ActionListener + { + private Component component; + private Point point; + + protected DropTargetAutoScroller (Component c, Point p) + { + component = c; + point = p; + } + + protected void updateLocation (Point newLocn) + { + point = newLocn; + } + + protected void stop () + { + } + + public void actionPerformed (ActionEvent e) + { + } + } + + private Component component; + private FlavorMap flavorMap; + private int actions; + private DropTargetContext dropTargetContext; + private DropTargetListener dropTargetListener; + private boolean active = true; + + /** + * Creates a <code>DropTarget</code> object. + * + * @exception HeadlessException If GraphicsEnvironment.isHeadless() + * returns true. + */ + public DropTarget () + { + this (null, 0, null, true, null); + } + + /** + * Creates a <code>DropTarget</code> object. + * + * @exception HeadlessException If GraphicsEnvironment.isHeadless() + * returns true. + */ + public DropTarget (Component c, DropTargetListener dtl) + { + this (c, 0, dtl, true, null); + } + + /** + * Creates a <code>DropTarget</code> object. + * + * @exception HeadlessException If GraphicsEnvironment.isHeadless() + * returns true. + */ + public DropTarget (Component c, int i, DropTargetListener dtl) + { + this (c, i, dtl, true, null); + } + + /** + * Creates a <code>DropTarget</code> object. + * + * @exception HeadlessException If GraphicsEnvironment.isHeadless() + * returns true. + */ + public DropTarget (Component c, int i, DropTargetListener dtl, boolean b) + { + this (c, i, dtl, b, null); + } + + /** + * Creates a <code>DropTarget</code> object. + * + * @exception HeadlessException If GraphicsEnvironment.isHeadless() + * returns true. + */ + public DropTarget (Component c, int i, DropTargetListener dtl, boolean b, + FlavorMap fm) + { + if (GraphicsEnvironment.isHeadless ()) + throw new HeadlessException (); + + component = c; + actions = i; + dropTargetListener = dtl; + flavorMap = fm; + + setActive (b); + } + + /** + * Sets the component associated with this drop target object. + */ + public void setComponent (Component c) + { + component = c; + } + + /** + * Returns the component associated with this drop target object. + */ + public Component getComponent () + { + return component; + } + + /** + * Sets the default actions. + */ + public void setDefaultActions (int ops) + { + actions = ops; + } + + /** + * Returns the default actions. + */ + public int getDefaultActions () + { + return actions; + } + + public void setActive (boolean active) + { + this.active = active; + } + + public boolean isActive() + { + return active; + } + + /** + * Adds a new <code>DropTargetListener</code>. + * + * @exception TooManyListenersException Sun's JDK does not, despite + * documentation, throw this exception here when you install an additional + * <code>DropTargetListener</code>. So to be compatible, we do the same + * thing. + */ + public void addDropTargetListener (DropTargetListener dtl) + throws TooManyListenersException + { + dropTargetListener = dtl; + } + + public void removeDropTargetListener(DropTargetListener dtl) + { + // FIXME: Do we need to do something with dtl ? + dropTargetListener = null; + } + + public void dragEnter(DropTargetDragEvent dtde) + { + } + + public void dragOver(DropTargetDragEvent dtde) + { + } + + public void dropActionChanged(DropTargetDragEvent dtde) + { + } + + public void dragExit(DropTargetEvent dte) + { + } + + public void drop(DropTargetDropEvent dtde) + { + } + + public FlavorMap getFlavorMap() + { + return flavorMap; + } + + public void setFlavorMap(FlavorMap fm) + { + flavorMap = fm; + } + + public void addNotify(java.awt.peer.ComponentPeer peer) + { + } + + public void removeNotify(java.awt.peer.ComponentPeer peer) + { + } + + public DropTargetContext getDropTargetContext() + { + if (dropTargetContext == null) + dropTargetContext = createDropTargetContext (); + + return dropTargetContext; + } + + protected DropTargetContext createDropTargetContext() + { + return new DropTargetContext (this); + } + + protected DropTarget.DropTargetAutoScroller createDropTargetAutoScroller + (Component c, Point p) + { + return new DropTarget.DropTargetAutoScroller (c, p); + } + + protected void initializeAutoscrolling(Point p) + { + } + + protected void updateAutoscroll(Point dragCursorLocn) + { + } + + protected void clearAutoscroll() + { + } +} // class DropTarget |