J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.awt.motif; |
| 27 | |
| 28 | import java.awt.Component; |
| 29 | import java.awt.Cursor; |
| 30 | import java.awt.Window; |
| 31 | |
| 32 | import java.awt.datatransfer.Transferable; |
| 33 | |
| 34 | import java.awt.dnd.DragSourceContext; |
| 35 | import java.awt.dnd.DragSourceDragEvent; |
| 36 | import java.awt.dnd.DragSourceDropEvent; |
| 37 | import java.awt.dnd.DragSourceEvent; |
| 38 | import java.awt.dnd.DragGestureEvent; |
| 39 | import java.awt.dnd.InvalidDnDOperationException; |
| 40 | |
| 41 | import java.awt.event.InputEvent; |
| 42 | |
| 43 | import java.util.Map; |
| 44 | |
| 45 | import sun.awt.SunToolkit; |
| 46 | |
| 47 | import sun.awt.dnd.SunDragSourceContextPeer; |
| 48 | import sun.awt.dnd.SunDropTargetContextPeer; |
| 49 | |
| 50 | /** |
| 51 | * The X11DragSourceContextPeer class is the class responsible for handling |
| 52 | * the interaction between the XDnD/Motif DnD subsystem and Java drag sources. |
| 53 | * |
| 54 | * @since 1.5 |
| 55 | */ |
| 56 | final class X11DragSourceContextPeer extends SunDragSourceContextPeer { |
| 57 | |
| 58 | private static final X11DragSourceContextPeer theInstance = |
| 59 | new X11DragSourceContextPeer(null); |
| 60 | |
| 61 | /** |
| 62 | * construct a new X11DragSourceContextPeer |
| 63 | */ |
| 64 | |
| 65 | private X11DragSourceContextPeer(DragGestureEvent dge) { |
| 66 | super(dge); |
| 67 | } |
| 68 | |
| 69 | static X11DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException { |
| 70 | theInstance.setTrigger(dge); |
| 71 | return theInstance; |
| 72 | } |
| 73 | |
| 74 | protected void startDrag(Transferable transferable, |
| 75 | long[] formats, Map formatMap) { |
| 76 | Component component = getTrigger().getComponent(); |
| 77 | Component c = null; |
| 78 | MWindowPeer wpeer = null; |
| 79 | |
| 80 | for (c = component; c != null && !(c instanceof java.awt.Window); |
| 81 | c = MComponentPeer.getParent_NoClientCode(c)); |
| 82 | |
| 83 | if (c instanceof Window) { |
| 84 | wpeer = (MWindowPeer)c.getPeer(); |
| 85 | } |
| 86 | |
| 87 | if (wpeer == null) { |
| 88 | throw new InvalidDnDOperationException( |
| 89 | "Cannot find top-level for the drag source component"); |
| 90 | } |
| 91 | |
| 92 | startDrag(component, |
| 93 | wpeer, |
| 94 | transferable, |
| 95 | getTrigger().getTriggerEvent(), |
| 96 | getCursor(), |
| 97 | getCursor() == null ? 0 : getCursor().getType(), |
| 98 | getDragSourceContext().getSourceActions(), |
| 99 | formats, |
| 100 | formatMap); |
| 101 | |
| 102 | /* This implementation doesn't use native context */ |
| 103 | setNativeContext(0); |
| 104 | |
| 105 | SunDropTargetContextPeer.setCurrentJVMLocalSourceTransferable(transferable); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * downcall into native code |
| 110 | */ |
| 111 | |
| 112 | private native long startDrag(Component component, |
| 113 | MWindowPeer wpeer, |
| 114 | Transferable transferable, |
| 115 | InputEvent nativeTrigger, |
| 116 | Cursor c, int ctype, int actions, |
| 117 | long[] formats, Map formatMap); |
| 118 | |
| 119 | /** |
| 120 | * set cursor |
| 121 | */ |
| 122 | |
| 123 | public void setCursor(Cursor c) throws InvalidDnDOperationException { |
| 124 | SunToolkit.awtLock(); |
| 125 | super.setCursor(c); |
| 126 | SunToolkit.awtUnlock(); |
| 127 | } |
| 128 | |
| 129 | protected native void setNativeCursor(long nativeCtxt, Cursor c, int cType); |
| 130 | |
| 131 | } |