| /* DragGestureEvent.java -- |
| Copyright (C) 2002 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.Cursor; |
| import java.awt.Image; |
| import java.awt.Point; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.event.InputEvent; |
| import java.util.EventObject; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| public class DragGestureEvent extends EventObject |
| { |
| /** |
| * Compatible with JDK 1.2+. |
| */ |
| private static final long serialVersionUID = 9080172649166731306L; |
| |
| private DragSource dragSource; |
| private Component component; |
| private final Point origin; |
| private final int action; |
| private List events; |
| private DragGestureRecognizer dgr; |
| |
| /** |
| * Constructs a new DragGestureEvent. |
| * @param dgr - DragGestureRecognizer firing this event |
| * @param action - user's preferred action |
| * @param origin - origin of the drag |
| * @param events - List of events that make up the gesture |
| * @throws IllegalArgumentException - if input parameters are null |
| */ |
| public DragGestureEvent(DragGestureRecognizer dgr, int action, Point origin, |
| List events) |
| { |
| super(dgr); |
| if (origin == null || events == null || dgr == null) |
| throw new IllegalArgumentException(); |
| |
| this.origin = origin; |
| this.action = action; |
| this.events = events; |
| this.dgr = dgr; |
| this.component = dgr.getComponent(); |
| this.dragSource = dgr.getDragSource(); |
| } |
| |
| /** |
| * Returns the source casted as a DragGestureRecognizer. |
| * |
| * @return the source casted as a DragGestureRecognizer. |
| */ |
| public DragGestureRecognizer getSourceAsDragGestureRecognizer() |
| { |
| return (DragGestureRecognizer) getSource(); |
| } |
| |
| /** |
| * Returns the Component corresponding to this. |
| * |
| * @return the Component corresponding to this. |
| */ |
| public Component getComponent() |
| { |
| return component; |
| } |
| |
| /** |
| * Gets the DragSource corresponding to this. |
| * |
| * @return the DragSource corresponding to this. |
| */ |
| public DragSource getDragSource() |
| { |
| return dragSource; |
| } |
| |
| /** |
| * Returns the origin of the drag. |
| * |
| * @return the origin of the drag. |
| */ |
| public Point getDragOrigin() |
| { |
| return origin; |
| } |
| |
| /** |
| * Gets an iterator representation of the List of events. |
| * |
| * @return an iterator representation of the List of events. |
| */ |
| public Iterator iterator() |
| { |
| return events.iterator(); |
| } |
| |
| /** |
| * Gets an array representation of the List of events. |
| * |
| * @return an array representation of the List of events. |
| */ |
| public Object[] toArray() |
| { |
| return events.toArray(); |
| } |
| |
| /** |
| * Gets an array representation of the List of events. |
| * |
| * @param array - the array to store the events in. |
| * @return an array representation of the List of events. |
| */ |
| public Object[] toArray(Object[] array) |
| { |
| return events.toArray(array); |
| } |
| |
| /** |
| * Gets the user's preferred action. |
| * |
| * @return the user's preferred action. |
| */ |
| public int getDragAction() |
| { |
| return action; |
| } |
| |
| /** |
| * Get the event that triggered this gesture. |
| * |
| * @return the event that triggered this gesture. |
| */ |
| public InputEvent getTriggerEvent() |
| { |
| return dgr.getTriggerEvent(); |
| } |
| |
| /** |
| * Starts the drag given the initial Cursor to display, the Transferable |
| * object, and the DragSourceListener to use. |
| * |
| * @exception InvalidDnDOperationException If the Drag and Drop system is |
| * unable to initiate a drag operation, or if the user attempts to start |
| * a drag while an existing drag operation is still executing. |
| */ |
| public void startDrag(Cursor dragCursor, Transferable trans) |
| { |
| startDrag(dragCursor, null, null, trans, null); |
| } |
| |
| /** |
| * Starts the drag given the initial Cursor to display, the Transferable |
| * object, and the DragSourceListener to use. |
| * |
| * @exception InvalidDnDOperationException If the Drag and Drop system is |
| * unable to initiate a drag operation, or if the user attempts to start |
| * a drag while an existing drag operation is still executing. |
| */ |
| public void startDrag(Cursor dragCursor, Transferable trans, |
| DragSourceListener l) |
| { |
| startDrag(dragCursor, null, null, trans, l); |
| } |
| |
| /** |
| * Starts the drag given the initial Cursor to display, the Transferable |
| * object, and the DragSourceListener to use. |
| * |
| * @exception InvalidDnDOperationException If the Drag and Drop system is |
| * unable to initiate a drag operation, or if the user attempts to start |
| * a drag while an existing drag operation is still executing. |
| */ |
| public void startDrag(Cursor dragCursor, Image dragImage, Point imageOffset, |
| Transferable trans, DragSourceListener l) |
| { |
| dragSource.startDrag(this, dragCursor, dragImage, imageOffset, trans, l); |
| } |
| } // class DragGestureEvent |