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/*
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* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.awt.X11;
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import java.awt.Point;
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import java.awt.dnd.DnDConstants;
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import java.awt.event.MouseEvent;
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import java.io.IOException;
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import sun.misc.Unsafe;
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/**
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* XDropTargetProtocol implementation for Motif DnD protocol.
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*
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* @since 1.5
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*/
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class MotifDnDDropTargetProtocol extends XDropTargetProtocol {
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private static final Unsafe unsafe = XlibWrapper.unsafe;
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private long sourceWindow = 0;
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private long sourceWindowMask = 0;
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private int sourceProtocolVersion = 0;
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private int sourceActions = DnDConstants.ACTION_NONE;
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private long[] sourceFormats = null;
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private long sourceAtom = 0;
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private int userAction = DnDConstants.ACTION_NONE;
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private int sourceX = 0;
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private int sourceY = 0;
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private XWindow targetXWindow = null;
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private boolean topLevelLeavePostponed = false;
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protected MotifDnDDropTargetProtocol(XDropTargetProtocolListener listener) {
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super(listener);
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}
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/**
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* Creates an instance associated with the specified listener.
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*
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* @throws NullPointerException if listener is <code>null</code>.
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*/
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static XDropTargetProtocol createInstance(XDropTargetProtocolListener listener) {
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return new MotifDnDDropTargetProtocol(listener);
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}
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public String getProtocolName() {
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return XDragAndDropProtocols.MotifDnD;
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}
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public void registerDropTarget(long window) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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MotifDnDConstants.writeDragReceiverInfoStruct(window);
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}
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public void unregisterDropTarget(long window) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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MotifDnDConstants.XA_MOTIF_ATOM_0.DeleteProperty(window);
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}
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public void registerEmbedderDropSite(long embedder) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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boolean overriden = false;
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int version = 0;
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long proxy = 0;
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long newProxy = XDropTargetRegistry.getDnDProxyWindow();
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int status = 0;
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long data = 0;
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int dataSize = MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE;
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WindowPropertyGetter wpg =
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new WindowPropertyGetter(embedder,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO,
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0, 0xFFFF, false,
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XlibWrapper.AnyPropertyType);
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try {
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status = wpg.execute(XToolkit.IgnoreBadWindowHandler);
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/*
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* DragICCI.h:
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*
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* typedef struct _xmDragReceiverInfoStruct{
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* BYTE byte_order;
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* BYTE protocol_version;
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* BYTE drag_protocol_style;
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* BYTE pad1;
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* CARD32 proxy_window B32;
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* CARD16 num_drop_sites B16;
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* CARD16 pad2 B16;
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* CARD32 heap_offset B32;
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* } xmDragReceiverInfoStruct;
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*/
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if (status == (int)XlibWrapper.Success && wpg.getData() != 0 &&
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wpg.getActualType() != 0 && wpg.getActualFormat() == 8 &&
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wpg.getNumberOfItems() >=
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MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) {
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overriden = true;
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data = wpg.getData();
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dataSize = wpg.getNumberOfItems();
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byte byteOrderByte = unsafe.getByte(data);
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{
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int tproxy = unsafe.getInt(data + 4);
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if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) {
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tproxy = MotifDnDConstants.Swapper.swap(tproxy);
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}
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proxy = tproxy;
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}
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if (proxy == newProxy) {
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// Embedder already registered.
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return;
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}
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{
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int tproxy = (int)newProxy;
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if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) {
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tproxy = MotifDnDConstants.Swapper.swap(tproxy);
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}
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unsafe.putInt(data + 4, tproxy);
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}
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} else {
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data = unsafe.allocateMemory(dataSize);
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unsafe.putByte(data, MotifDnDConstants.getByteOrderByte()); /* byte order */
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unsafe.putByte(data + 1, MotifDnDConstants.MOTIF_DND_PROTOCOL_VERSION); /* protocol version */
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unsafe.putByte(data + 2, (byte)MotifDnDConstants.MOTIF_DYNAMIC_STYLE); /* protocol style */
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unsafe.putByte(data + 3, (byte)0); /* pad */
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unsafe.putInt(data + 4, (int)newProxy); /* proxy window */
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unsafe.putShort(data + 8, (short)0); /* num_drop_sites */
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unsafe.putShort(data + 10, (short)0); /* pad */
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unsafe.putInt(data + 12, dataSize);
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}
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XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler);
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XlibWrapper.XChangeProperty(XToolkit.getDisplay(), embedder,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(),
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(),
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8, XlibWrapper.PropModeReplace,
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data, dataSize);
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XToolkit.RESTORE_XERROR_HANDLER();
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if (XToolkit.saved_error != null &&
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XToolkit.saved_error.get_error_code() != XlibWrapper.Success) {
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throw new XException("Cannot write Motif receiver info property");
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}
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} finally {
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if (!overriden) {
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unsafe.freeMemory(data);
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data = 0;
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}
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wpg.dispose();
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}
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putEmbedderRegistryEntry(embedder, overriden, version, proxy);
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}
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public void unregisterEmbedderDropSite(long embedder) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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EmbedderRegistryEntry entry = getEmbedderRegistryEntry(embedder);
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if (entry == null) {
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return;
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}
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if (entry.isOverriden()) {
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int status = 0;
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WindowPropertyGetter wpg =
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new WindowPropertyGetter(embedder,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO,
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0, 0xFFFF, false,
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XlibWrapper.AnyPropertyType);
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try {
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status = wpg.execute(XToolkit.IgnoreBadWindowHandler);
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/*
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* DragICCI.h:
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*
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* typedef struct _xmDragReceiverInfoStruct{
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* BYTE byte_order;
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* BYTE protocol_version;
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* BYTE drag_protocol_style;
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* BYTE pad1;
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* CARD32 proxy_window B32;
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* CARD16 num_drop_sites B16;
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* CARD16 pad2 B16;
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* CARD32 heap_offset B32;
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* } xmDragReceiverInfoStruct;
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*/
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if (status == (int)XlibWrapper.Success && wpg.getData() != 0 &&
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wpg.getActualType() != 0 && wpg.getActualFormat() == 8 &&
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wpg.getNumberOfItems() >=
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MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) {
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int dataSize = MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE;
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long data = wpg.getData();
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byte byteOrderByte = unsafe.getByte(data);
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int tproxy = (int)entry.getProxy();
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if (MotifDnDConstants.getByteOrderByte() != byteOrderByte) {
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tproxy = MotifDnDConstants.Swapper.swap(tproxy);
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}
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unsafe.putInt(data + 4, tproxy);
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XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler);
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XlibWrapper.XChangeProperty(XToolkit.getDisplay(), embedder,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(),
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(),
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8, XlibWrapper.PropModeReplace,
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data, dataSize);
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XToolkit.RESTORE_XERROR_HANDLER();
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if (XToolkit.saved_error != null &&
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XToolkit.saved_error.get_error_code() != XlibWrapper.Success) {
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throw new XException("Cannot write Motif receiver info property");
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}
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}
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} finally {
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wpg.dispose();
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}
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} else {
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.DeleteProperty(embedder);
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}
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}
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/*
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* Gets and stores in the registry the embedder's Motif DnD drop site info
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* from the embedded.
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*/
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public void registerEmbeddedDropSite(long embedded) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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boolean overriden = false;
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int version = 0;
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long proxy = 0;
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int status = 0;
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WindowPropertyGetter wpg =
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new WindowPropertyGetter(embedded,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO,
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0, 0xFFFF, false,
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XlibWrapper.AnyPropertyType);
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try {
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status = wpg.execute(XToolkit.IgnoreBadWindowHandler);
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280 |
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/*
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* DragICCI.h:
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*
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* typedef struct _xmDragReceiverInfoStruct{
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* BYTE byte_order;
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* BYTE protocol_version;
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* BYTE drag_protocol_style;
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* BYTE pad1;
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* CARD32 proxy_window B32;
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* CARD16 num_drop_sites B16;
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* CARD16 pad2 B16;
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* CARD32 heap_offset B32;
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* } xmDragReceiverInfoStruct;
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*/
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if (status == (int)XlibWrapper.Success && wpg.getData() != 0 &&
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wpg.getActualType() != 0 && wpg.getActualFormat() == 8 &&
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wpg.getNumberOfItems() >=
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MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) {
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overriden = true;
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long data = wpg.getData();
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byte byteOrderByte = unsafe.getByte(data);
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{
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int tproxy = unsafe.getInt(data + 4);
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if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) {
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tproxy = MotifDnDConstants.Swapper.swap(tproxy);
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}
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proxy = tproxy;
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}
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}
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} finally {
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wpg.dispose();
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}
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putEmbedderRegistryEntry(embedded, overriden, version, proxy);
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}
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public boolean isProtocolSupported(long window) {
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WindowPropertyGetter wpg =
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new WindowPropertyGetter(window,
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MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO,
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0, 0xFFFF, false,
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XlibWrapper.AnyPropertyType);
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try {
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int status = wpg.execute(XToolkit.IgnoreBadWindowHandler);
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329 |
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if (status == (int)XlibWrapper.Success && wpg.getData() != 0 &&
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wpg.getActualType() != 0 && wpg.getActualFormat() == 8 &&
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332 |
wpg.getNumberOfItems() >=
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MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) {
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return true;
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} else {
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return false;
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}
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} finally {
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wpg.dispose();
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}
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}
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342 |
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private boolean processTopLevelEnter(XClientMessageEvent xclient) {
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assert XToolkit.isAWTLockHeldByCurrentThread();
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345 |
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if (targetXWindow != null || sourceWindow != 0) {
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return false;
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348 |
}
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349 |
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350 |
if (!(XToolkit.windowToXWindow(xclient.get_window()) instanceof XWindow)
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351 |
&& getEmbedderRegistryEntry(xclient.get_window()) == null) {
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return false;
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}
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354 |
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long source_win = 0;
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356 |
long source_win_mask = 0;
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357 |
int protocol_version = 0;
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358 |
long property_atom = 0;
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359 |
long[] formats = null;
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360 |
|
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361 |
{
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362 |
long data = xclient.get_data();
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363 |
byte eventByteOrder = unsafe.getByte(data + 1);
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364 |
source_win = MotifDnDConstants.Swapper.getInt(data + 8, eventByteOrder);
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365 |
property_atom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder);
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366 |
}
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367 |
|
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368 |
/* Extract the available data types. */
|
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369 |
{
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370 |
WindowPropertyGetter wpg =
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371 |
new WindowPropertyGetter(source_win,
|
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372 |
XAtom.get(property_atom),
|
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373 |
0, 0xFFFF,
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374 |
false,
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375 |
MotifDnDConstants.XA_MOTIF_DRAG_INITIATOR_INFO.getAtom());
|
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376 |
|
|
377 |
try {
|
|
378 |
int status = wpg.execute(XToolkit.IgnoreBadWindowHandler);
|
|
379 |
|
|
380 |
if (status == XlibWrapper.Success && wpg.getData() != 0 &&
|
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381 |
wpg.getActualType() ==
|
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382 |
MotifDnDConstants.XA_MOTIF_DRAG_INITIATOR_INFO.getAtom() &&
|
|
383 |
wpg.getActualFormat() == 8 &&
|
|
384 |
wpg.getNumberOfItems() ==
|
|
385 |
MotifDnDConstants.MOTIF_INITIATOR_INFO_SIZE) {
|
|
386 |
|
|
387 |
long data = wpg.getData();
|
|
388 |
byte propertyByteOrder = unsafe.getByte(data);
|
|
389 |
|
|
390 |
protocol_version = unsafe.getByte(data + 1);
|
|
391 |
|
|
392 |
if (protocol_version !=
|
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393 |
MotifDnDConstants.MOTIF_DND_PROTOCOL_VERSION) {
|
|
394 |
return false;
|
|
395 |
}
|
|
396 |
|
|
397 |
int index =
|
|
398 |
MotifDnDConstants.Swapper.getShort(data + 2, propertyByteOrder);
|
|
399 |
|
|
400 |
formats = MotifDnDConstants.getTargetListForIndex(index);
|
|
401 |
} else {
|
|
402 |
formats = new long[0];
|
|
403 |
}
|
|
404 |
} finally {
|
|
405 |
wpg.dispose();
|
|
406 |
}
|
|
407 |
}
|
|
408 |
|
|
409 |
/*
|
|
410 |
* Select for StructureNotifyMask to receive DestroyNotify in case of source
|
|
411 |
* crash.
|
|
412 |
*/
|
|
413 |
XWindowAttributes wattr = new XWindowAttributes();
|
|
414 |
try {
|
|
415 |
XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler);
|
|
416 |
int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(),
|
|
417 |
source_win, wattr.pData);
|
|
418 |
|
|
419 |
XToolkit.RESTORE_XERROR_HANDLER();
|
|
420 |
|
|
421 |
if (status == 0 ||
|
|
422 |
(XToolkit.saved_error != null &&
|
|
423 |
XToolkit.saved_error.get_error_code() != XlibWrapper.Success)) {
|
|
424 |
throw new XException("XGetWindowAttributes failed");
|
|
425 |
}
|
|
426 |
|
|
427 |
source_win_mask = wattr.get_your_event_mask();
|
|
428 |
} finally {
|
|
429 |
wattr.dispose();
|
|
430 |
}
|
|
431 |
|
|
432 |
XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler);
|
|
433 |
XlibWrapper.XSelectInput(XToolkit.getDisplay(), source_win,
|
|
434 |
source_win_mask |
|
|
435 |
XlibWrapper.StructureNotifyMask);
|
|
436 |
|
|
437 |
XToolkit.RESTORE_XERROR_HANDLER();
|
|
438 |
|
|
439 |
if (XToolkit.saved_error != null &&
|
|
440 |
XToolkit.saved_error.get_error_code() != XlibWrapper.Success) {
|
|
441 |
throw new XException("XSelectInput failed");
|
|
442 |
}
|
|
443 |
|
|
444 |
sourceWindow = source_win;
|
|
445 |
sourceWindowMask = source_win_mask;
|
|
446 |
sourceProtocolVersion = protocol_version;
|
|
447 |
/*
|
|
448 |
* TOP_LEVEL_ENTER doesn't communicate the list of supported actions
|
|
449 |
* They are provided in DRAG_MOTION.
|
|
450 |
*/
|
|
451 |
sourceActions = DnDConstants.ACTION_NONE;
|
|
452 |
sourceFormats = formats;
|
|
453 |
sourceAtom = property_atom;
|
|
454 |
|
|
455 |
return true;
|
|
456 |
}
|
|
457 |
|
|
458 |
private boolean processDragMotion(XClientMessageEvent xclient) {
|
|
459 |
long data = xclient.get_data();
|
|
460 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
461 |
byte eventReason = (byte)(unsafe.getByte(data) &
|
|
462 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
463 |
int x = 0;
|
|
464 |
int y = 0;
|
|
465 |
|
|
466 |
short flags = MotifDnDConstants.Swapper.getShort(data + 2, eventByteOrder);
|
|
467 |
|
|
468 |
int motif_action = (flags & MotifDnDConstants.MOTIF_DND_ACTION_MASK) >>
|
|
469 |
MotifDnDConstants.MOTIF_DND_ACTION_SHIFT;
|
|
470 |
int motif_actions = (flags & MotifDnDConstants.MOTIF_DND_ACTIONS_MASK) >>
|
|
471 |
MotifDnDConstants.MOTIF_DND_ACTIONS_SHIFT;
|
|
472 |
|
|
473 |
int java_action = MotifDnDConstants.getJavaActionsForMotifActions(motif_action);
|
|
474 |
int java_actions = MotifDnDConstants.getJavaActionsForMotifActions(motif_actions);
|
|
475 |
|
|
476 |
/* Append source window id to the event data, so that we can send the
|
|
477 |
response properly. */
|
|
478 |
{
|
|
479 |
int win = (int)sourceWindow;
|
|
480 |
if (eventByteOrder != MotifDnDConstants.getByteOrderByte()) {
|
|
481 |
win = MotifDnDConstants.Swapper.swap(win);
|
|
482 |
}
|
|
483 |
unsafe.putInt(data + 12, win);
|
|
484 |
}
|
|
485 |
|
|
486 |
XWindow xwindow = null;
|
|
487 |
{
|
|
488 |
XBaseWindow xbasewindow = XToolkit.windowToXWindow(xclient.get_window());
|
|
489 |
if (xbasewindow instanceof XWindow) {
|
|
490 |
xwindow = (XWindow)xbasewindow;
|
|
491 |
}
|
|
492 |
}
|
|
493 |
|
|
494 |
if (eventReason == MotifDnDConstants.OPERATION_CHANGED) {
|
|
495 |
/* OPERATION_CHANGED event doesn't provide coordinates, so we use
|
|
496 |
previously stored position and component ref. */
|
|
497 |
x = sourceX;
|
|
498 |
y = sourceY;
|
|
499 |
|
|
500 |
if (xwindow == null) {
|
|
501 |
xwindow = targetXWindow;
|
|
502 |
}
|
|
503 |
} else {
|
|
504 |
x = MotifDnDConstants.Swapper.getShort(data + 8, eventByteOrder);
|
|
505 |
y = MotifDnDConstants.Swapper.getShort(data + 10, eventByteOrder);
|
|
506 |
|
|
507 |
if (xwindow == null) {
|
|
508 |
long receiver =
|
|
509 |
XDropTargetRegistry.getRegistry().getEmbeddedDropSite(
|
|
510 |
xclient.get_window(), x, y);
|
|
511 |
|
|
512 |
if (receiver != 0) {
|
|
513 |
XBaseWindow xbasewindow = XToolkit.windowToXWindow(receiver);
|
|
514 |
if (xbasewindow instanceof XWindow) {
|
|
515 |
xwindow = (XWindow)xbasewindow;
|
|
516 |
}
|
|
517 |
}
|
|
518 |
}
|
|
519 |
|
|
520 |
if (xwindow != null) {
|
|
521 |
Point p = xwindow.toLocal(x, y);
|
|
522 |
x = p.x;
|
|
523 |
y = p.y;
|
|
524 |
}
|
|
525 |
}
|
|
526 |
|
|
527 |
if (xwindow == null) {
|
|
528 |
if (targetXWindow != null) {
|
|
529 |
notifyProtocolListener(targetXWindow, x, y,
|
|
530 |
DnDConstants.ACTION_NONE, java_actions,
|
|
531 |
xclient, MouseEvent.MOUSE_EXITED);
|
|
532 |
}
|
|
533 |
} else {
|
|
534 |
int java_event_id = 0;
|
|
535 |
|
|
536 |
if (targetXWindow == null) {
|
|
537 |
java_event_id = MouseEvent.MOUSE_ENTERED;
|
|
538 |
} else {
|
|
539 |
java_event_id = MouseEvent.MOUSE_DRAGGED;
|
|
540 |
}
|
|
541 |
|
|
542 |
notifyProtocolListener(xwindow, x, y, java_action, java_actions,
|
|
543 |
xclient, java_event_id);
|
|
544 |
}
|
|
545 |
|
|
546 |
sourceActions = java_actions;
|
|
547 |
userAction = java_action;
|
|
548 |
sourceX = x;
|
|
549 |
sourceY = y;
|
|
550 |
targetXWindow = xwindow;
|
|
551 |
|
|
552 |
return true;
|
|
553 |
}
|
|
554 |
|
|
555 |
private boolean processTopLevelLeave(XClientMessageEvent xclient) {
|
|
556 |
assert XToolkit.isAWTLockHeldByCurrentThread();
|
|
557 |
|
|
558 |
long data = xclient.get_data();
|
|
559 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
560 |
|
|
561 |
long source_win = MotifDnDConstants.Swapper.getInt(data + 8, eventByteOrder);
|
|
562 |
|
|
563 |
/* Ignore Motif DnD messages from all other windows. */
|
|
564 |
if (source_win != sourceWindow) {
|
|
565 |
return false;
|
|
566 |
}
|
|
567 |
|
|
568 |
/*
|
|
569 |
* Postpone upcall to java, so that we can abort it in case
|
|
570 |
* if drop immediatelly follows (see BugTraq ID 4395290).
|
|
571 |
* Send a dummy ClientMessage event to guarantee that a postponed java
|
|
572 |
* upcall will be processed.
|
|
573 |
*/
|
|
574 |
topLevelLeavePostponed = true;
|
|
575 |
{
|
|
576 |
long proxy;
|
|
577 |
|
|
578 |
/*
|
|
579 |
* If this is an embedded drop site, the event should go to the
|
|
580 |
* awt_root_window as this is a proxy for all embedded drop sites.
|
|
581 |
* Otherwise the event should go to the event->window, as we don't use
|
|
582 |
* proxies for normal drop sites.
|
|
583 |
*/
|
|
584 |
if (getEmbedderRegistryEntry(xclient.get_window()) != null) {
|
|
585 |
proxy = XDropTargetRegistry.getDnDProxyWindow();
|
|
586 |
} else {
|
|
587 |
proxy = xclient.get_window();
|
|
588 |
}
|
|
589 |
|
|
590 |
XClientMessageEvent dummy = new XClientMessageEvent();
|
|
591 |
|
|
592 |
try {
|
|
593 |
dummy.set_type(XlibWrapper.ClientMessage);
|
|
594 |
dummy.set_window(xclient.get_window());
|
|
595 |
dummy.set_format(32);
|
|
596 |
dummy.set_message_type(0);
|
|
597 |
dummy.set_data(0, 0);
|
|
598 |
dummy.set_data(1, 0);
|
|
599 |
dummy.set_data(2, 0);
|
|
600 |
dummy.set_data(3, 0);
|
|
601 |
dummy.set_data(4, 0);
|
|
602 |
XlibWrapper.XSendEvent(XToolkit.getDisplay(),
|
|
603 |
proxy, false, XlibWrapper.NoEventMask,
|
|
604 |
dummy.pData);
|
|
605 |
} finally {
|
|
606 |
dummy.dispose();
|
|
607 |
}
|
|
608 |
}
|
|
609 |
return true;
|
|
610 |
}
|
|
611 |
|
|
612 |
private boolean processDropStart(XClientMessageEvent xclient) {
|
|
613 |
long data = xclient.get_data();
|
|
614 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
615 |
|
|
616 |
long source_win =
|
|
617 |
MotifDnDConstants.Swapper.getInt(data + 16, eventByteOrder);
|
|
618 |
|
|
619 |
/* Ignore Motif DnD messages from all other windows. */
|
|
620 |
if (source_win != sourceWindow) {
|
|
621 |
return false;
|
|
622 |
}
|
|
623 |
|
|
624 |
long property_atom =
|
|
625 |
MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder);
|
|
626 |
|
|
627 |
short flags =
|
|
628 |
MotifDnDConstants.Swapper.getShort(data + 2, eventByteOrder);
|
|
629 |
|
|
630 |
int motif_action = (flags & MotifDnDConstants.MOTIF_DND_ACTION_MASK) >>
|
|
631 |
MotifDnDConstants.MOTIF_DND_ACTION_SHIFT;
|
|
632 |
int motif_actions = (flags & MotifDnDConstants.MOTIF_DND_ACTIONS_MASK) >>
|
|
633 |
MotifDnDConstants.MOTIF_DND_ACTIONS_SHIFT;
|
|
634 |
|
|
635 |
int java_action = MotifDnDConstants.getJavaActionsForMotifActions(motif_action);
|
|
636 |
int java_actions = MotifDnDConstants.getJavaActionsForMotifActions(motif_actions);
|
|
637 |
|
|
638 |
int x = MotifDnDConstants.Swapper.getShort(data + 8, eventByteOrder);
|
|
639 |
int y = MotifDnDConstants.Swapper.getShort(data + 10, eventByteOrder);
|
|
640 |
|
|
641 |
XWindow xwindow = null;
|
|
642 |
{
|
|
643 |
XBaseWindow xbasewindow = XToolkit.windowToXWindow(xclient.get_window());
|
|
644 |
if (xbasewindow instanceof XWindow) {
|
|
645 |
xwindow = (XWindow)xbasewindow;
|
|
646 |
}
|
|
647 |
}
|
|
648 |
|
|
649 |
if (xwindow == null) {
|
|
650 |
long receiver =
|
|
651 |
XDropTargetRegistry.getRegistry().getEmbeddedDropSite(
|
|
652 |
xclient.get_window(), x, y);
|
|
653 |
|
|
654 |
if (receiver != 0) {
|
|
655 |
XBaseWindow xbasewindow = XToolkit.windowToXWindow(receiver);
|
|
656 |
if (xbasewindow instanceof XWindow) {
|
|
657 |
xwindow = (XWindow)xbasewindow;
|
|
658 |
}
|
|
659 |
}
|
|
660 |
}
|
|
661 |
|
|
662 |
if (xwindow != null) {
|
|
663 |
Point p = xwindow.toLocal(x, y);
|
|
664 |
x = p.x;
|
|
665 |
y = p.y;
|
|
666 |
}
|
|
667 |
|
|
668 |
if (xwindow != null) {
|
|
669 |
notifyProtocolListener(xwindow, x, y, java_action, java_actions,
|
|
670 |
xclient, MouseEvent.MOUSE_RELEASED);
|
|
671 |
} else if (targetXWindow != null) {
|
|
672 |
notifyProtocolListener(targetXWindow, x, y,
|
|
673 |
DnDConstants.ACTION_NONE, java_actions,
|
|
674 |
xclient, MouseEvent.MOUSE_EXITED);
|
|
675 |
}
|
|
676 |
|
|
677 |
return true;
|
|
678 |
}
|
|
679 |
|
|
680 |
public int getMessageType(XClientMessageEvent xclient) {
|
|
681 |
if (xclient.get_message_type() !=
|
|
682 |
MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) {
|
|
683 |
|
|
684 |
return UNKNOWN_MESSAGE;
|
|
685 |
}
|
|
686 |
|
|
687 |
long data = xclient.get_data();
|
|
688 |
byte reason = (byte)(unsafe.getByte(data) &
|
|
689 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
690 |
|
|
691 |
switch (reason) {
|
|
692 |
case MotifDnDConstants.TOP_LEVEL_ENTER :
|
|
693 |
return ENTER_MESSAGE;
|
|
694 |
case MotifDnDConstants.DRAG_MOTION :
|
|
695 |
case MotifDnDConstants.OPERATION_CHANGED :
|
|
696 |
return MOTION_MESSAGE;
|
|
697 |
case MotifDnDConstants.TOP_LEVEL_LEAVE :
|
|
698 |
return LEAVE_MESSAGE;
|
|
699 |
case MotifDnDConstants.DROP_START :
|
|
700 |
return DROP_MESSAGE;
|
|
701 |
default:
|
|
702 |
return UNKNOWN_MESSAGE;
|
|
703 |
}
|
|
704 |
}
|
|
705 |
|
|
706 |
protected boolean processClientMessageImpl(XClientMessageEvent xclient) {
|
|
707 |
if (xclient.get_message_type() !=
|
|
708 |
MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) {
|
|
709 |
if (topLevelLeavePostponed) {
|
|
710 |
topLevelLeavePostponed = false;
|
|
711 |
cleanup();
|
|
712 |
}
|
|
713 |
|
|
714 |
return false;
|
|
715 |
}
|
|
716 |
|
|
717 |
long data = xclient.get_data();
|
|
718 |
byte reason = (byte)(unsafe.getByte(data) &
|
|
719 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
720 |
byte origin = (byte)(unsafe.getByte(data) &
|
|
721 |
MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK);
|
|
722 |
|
|
723 |
if (topLevelLeavePostponed) {
|
|
724 |
topLevelLeavePostponed = false;
|
|
725 |
if (reason != MotifDnDConstants.DROP_START) {
|
|
726 |
cleanup();
|
|
727 |
}
|
|
728 |
}
|
|
729 |
|
|
730 |
/* Only initiator messages should be handled. */
|
|
731 |
if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) {
|
|
732 |
return false;
|
|
733 |
}
|
|
734 |
|
|
735 |
switch (reason) {
|
|
736 |
case MotifDnDConstants.TOP_LEVEL_ENTER :
|
|
737 |
return processTopLevelEnter(xclient);
|
|
738 |
case MotifDnDConstants.DRAG_MOTION :
|
|
739 |
case MotifDnDConstants.OPERATION_CHANGED :
|
|
740 |
return processDragMotion(xclient);
|
|
741 |
case MotifDnDConstants.TOP_LEVEL_LEAVE :
|
|
742 |
return processTopLevelLeave(xclient);
|
|
743 |
case MotifDnDConstants.DROP_START :
|
|
744 |
return processDropStart(xclient);
|
|
745 |
default:
|
|
746 |
return false;
|
|
747 |
}
|
|
748 |
}
|
|
749 |
|
|
750 |
/*
|
|
751 |
* Currently we don't synthesize enter/leave messages for Motif DnD
|
|
752 |
* protocol. See comments in XDropTargetProtocol.postProcessClientMessage.
|
|
753 |
*/
|
|
754 |
protected void sendEnterMessageToToplevel(long win,
|
|
755 |
XClientMessageEvent xclient) {
|
|
756 |
throw new Error("UNIMPLEMENTED");
|
|
757 |
}
|
|
758 |
|
|
759 |
protected void sendLeaveMessageToToplevel(long win,
|
|
760 |
XClientMessageEvent xclient) {
|
|
761 |
throw new Error("UNIMPLEMENTED");
|
|
762 |
}
|
|
763 |
|
|
764 |
public boolean forwardEventToEmbedded(long embedded, long ctxt,
|
|
765 |
int eventID) {
|
|
766 |
// UNIMPLEMENTED.
|
|
767 |
return false;
|
|
768 |
}
|
|
769 |
|
|
770 |
public boolean isXEmbedSupported() {
|
|
771 |
return false;
|
|
772 |
}
|
|
773 |
|
|
774 |
public boolean sendResponse(long ctxt, int eventID, int action) {
|
|
775 |
XClientMessageEvent xclient = new XClientMessageEvent(ctxt);
|
|
776 |
if (xclient.get_message_type() !=
|
|
777 |
MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) {
|
|
778 |
return false;
|
|
779 |
}
|
|
780 |
|
|
781 |
long data = xclient.get_data();
|
|
782 |
byte reason = (byte)(unsafe.getByte(data) &
|
|
783 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
784 |
byte origin = (byte)(unsafe.getByte(data) &
|
|
785 |
MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK);
|
|
786 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
787 |
byte response_reason = (byte)0;
|
|
788 |
|
|
789 |
/* Only initiator messages should be handled. */
|
|
790 |
if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) {
|
|
791 |
return false;
|
|
792 |
}
|
|
793 |
|
|
794 |
switch (reason) {
|
|
795 |
case MotifDnDConstants.TOP_LEVEL_ENTER:
|
|
796 |
case MotifDnDConstants.TOP_LEVEL_LEAVE:
|
|
797 |
/* Receiver shouldn't rely to these messages. */
|
|
798 |
return false;
|
|
799 |
case MotifDnDConstants.DRAG_MOTION:
|
|
800 |
switch (eventID) {
|
|
801 |
case MouseEvent.MOUSE_ENTERED:
|
|
802 |
response_reason = MotifDnDConstants.DROP_SITE_ENTER;
|
|
803 |
break;
|
|
804 |
case MouseEvent.MOUSE_DRAGGED:
|
|
805 |
response_reason = MotifDnDConstants.DRAG_MOTION;
|
|
806 |
break;
|
|
807 |
case MouseEvent.MOUSE_EXITED:
|
|
808 |
response_reason = MotifDnDConstants.DROP_SITE_LEAVE;
|
|
809 |
break;
|
|
810 |
}
|
|
811 |
break;
|
|
812 |
case MotifDnDConstants.OPERATION_CHANGED:
|
|
813 |
case MotifDnDConstants.DROP_START:
|
|
814 |
response_reason = reason;
|
|
815 |
break;
|
|
816 |
default:
|
|
817 |
// Unknown reason. Shouldn't get here.
|
|
818 |
assert false;
|
|
819 |
}
|
|
820 |
|
|
821 |
XClientMessageEvent msg = new XClientMessageEvent();
|
|
822 |
|
|
823 |
try {
|
|
824 |
msg.set_type(XlibWrapper.ClientMessage);
|
|
825 |
msg.set_window(MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder));
|
|
826 |
msg.set_format(8);
|
|
827 |
msg.set_message_type(MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom());
|
|
828 |
|
|
829 |
long responseData = msg.get_data();
|
|
830 |
|
|
831 |
unsafe.putByte(responseData, (byte)(response_reason |
|
|
832 |
MotifDnDConstants.MOTIF_MESSAGE_FROM_RECEIVER));
|
|
833 |
unsafe.putByte(responseData + 1, MotifDnDConstants.getByteOrderByte());
|
|
834 |
|
|
835 |
int response_flags = 0;
|
|
836 |
|
|
837 |
if (response_reason != MotifDnDConstants.DROP_SITE_LEAVE) {
|
|
838 |
short flags = MotifDnDConstants.Swapper.getShort(data + 2,
|
|
839 |
eventByteOrder);
|
|
840 |
byte dropSiteStatus = (action == DnDConstants.ACTION_NONE) ?
|
|
841 |
MotifDnDConstants.MOTIF_INVALID_DROP_SITE :
|
|
842 |
MotifDnDConstants.MOTIF_VALID_DROP_SITE;
|
|
843 |
|
|
844 |
/* Clear action and drop site status bits. */
|
|
845 |
response_flags = flags &
|
|
846 |
~MotifDnDConstants.MOTIF_DND_ACTION_MASK &
|
|
847 |
~MotifDnDConstants.MOTIF_DND_STATUS_MASK;
|
|
848 |
/* Fill in new action and drop site status. */
|
|
849 |
response_flags |=
|
|
850 |
MotifDnDConstants.getMotifActionsForJavaActions(action) <<
|
|
851 |
MotifDnDConstants.MOTIF_DND_ACTION_SHIFT;
|
|
852 |
response_flags |=
|
|
853 |
dropSiteStatus << MotifDnDConstants.MOTIF_DND_STATUS_SHIFT;
|
|
854 |
} else {
|
|
855 |
response_flags = 0;
|
|
856 |
}
|
|
857 |
|
|
858 |
unsafe.putShort(responseData + 2, (short)response_flags);
|
|
859 |
|
|
860 |
/* Write time stamp. */
|
|
861 |
int time = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder);
|
|
862 |
unsafe.putInt(responseData + 4, time);
|
|
863 |
|
|
864 |
/* Write coordinates. */
|
|
865 |
if (response_reason != MotifDnDConstants.DROP_SITE_LEAVE) {
|
|
866 |
short x = MotifDnDConstants.Swapper.getShort(data + 8,
|
|
867 |
eventByteOrder);
|
|
868 |
short y = MotifDnDConstants.Swapper.getShort(data + 10,
|
|
869 |
eventByteOrder);
|
|
870 |
unsafe.putShort(responseData + 8, x); // x
|
|
871 |
unsafe.putShort(responseData + 10, y); // y
|
|
872 |
} else {
|
|
873 |
unsafe.putShort(responseData + 8, (short)0); // x
|
|
874 |
unsafe.putShort(responseData + 10, (short)0); // y
|
|
875 |
}
|
|
876 |
|
|
877 |
XToolkit.awtLock();
|
|
878 |
try {
|
|
879 |
XlibWrapper.XSendEvent(XToolkit.getDisplay(),
|
|
880 |
msg.get_window(),
|
|
881 |
false, XlibWrapper.NoEventMask,
|
|
882 |
msg.pData);
|
|
883 |
} finally {
|
|
884 |
XToolkit.awtUnlock();
|
|
885 |
}
|
|
886 |
} finally {
|
|
887 |
msg.dispose();
|
|
888 |
}
|
|
889 |
|
|
890 |
return true;
|
|
891 |
}
|
|
892 |
|
|
893 |
public Object getData(long ctxt, long format)
|
|
894 |
throws IllegalArgumentException, IOException {
|
|
895 |
XClientMessageEvent xclient = new XClientMessageEvent(ctxt);
|
|
896 |
|
|
897 |
if (xclient.get_message_type() !=
|
|
898 |
MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) {
|
|
899 |
throw new IllegalArgumentException();
|
|
900 |
}
|
|
901 |
|
|
902 |
long data = xclient.get_data();
|
|
903 |
byte reason = (byte)(unsafe.getByte(data) &
|
|
904 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
905 |
byte origin = (byte)(unsafe.getByte(data) &
|
|
906 |
MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK);
|
|
907 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
908 |
|
|
909 |
if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) {
|
|
910 |
throw new IOException("Cannot get data: corrupted context");
|
|
911 |
}
|
|
912 |
|
|
913 |
long selatom = 0;
|
|
914 |
|
|
915 |
switch (reason) {
|
|
916 |
case MotifDnDConstants.DRAG_MOTION :
|
|
917 |
case MotifDnDConstants.OPERATION_CHANGED :
|
|
918 |
selatom = sourceAtom;
|
|
919 |
break;
|
|
920 |
case MotifDnDConstants.DROP_START :
|
|
921 |
selatom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder);
|
|
922 |
break;
|
|
923 |
default:
|
|
924 |
throw new IOException("Cannot get data: invalid message reason");
|
|
925 |
}
|
|
926 |
|
|
927 |
if (selatom == 0) {
|
|
928 |
throw new IOException("Cannot get data: drag source property atom unavailable");
|
|
929 |
}
|
|
930 |
|
|
931 |
long time_stamp = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder);
|
|
932 |
XAtom selectionAtom = XAtom.get(selatom);
|
|
933 |
|
|
934 |
XSelection selection = XSelection.getSelection(selectionAtom);
|
|
935 |
if (selection == null) {
|
|
936 |
selection = new XSelection(selectionAtom, null);
|
|
937 |
}
|
|
938 |
|
|
939 |
return selection.getData(format, time_stamp);
|
|
940 |
}
|
|
941 |
|
|
942 |
public boolean sendDropDone(long ctxt, boolean success, int dropAction) {
|
|
943 |
XClientMessageEvent xclient = new XClientMessageEvent(ctxt);
|
|
944 |
|
|
945 |
if (xclient.get_message_type() !=
|
|
946 |
MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) {
|
|
947 |
return false;
|
|
948 |
}
|
|
949 |
|
|
950 |
long data = xclient.get_data();
|
|
951 |
byte reason = (byte)(unsafe.getByte(data) &
|
|
952 |
MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK);
|
|
953 |
byte origin = (byte)(unsafe.getByte(data) &
|
|
954 |
MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK);
|
|
955 |
byte eventByteOrder = unsafe.getByte(data + 1);
|
|
956 |
|
|
957 |
if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) {
|
|
958 |
return false;
|
|
959 |
}
|
|
960 |
|
|
961 |
if (reason != MotifDnDConstants.DROP_START) {
|
|
962 |
return false;
|
|
963 |
}
|
|
964 |
|
|
965 |
long time_stamp = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder);
|
|
966 |
long sel_atom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder);
|
|
967 |
|
|
968 |
long status_atom = 0;
|
|
969 |
|
|
970 |
if (success) {
|
|
971 |
status_atom = MotifDnDConstants.XA_XmTRANSFER_SUCCESS.getAtom();
|
|
972 |
} else {
|
|
973 |
status_atom = MotifDnDConstants.XA_XmTRANSFER_FAILURE.getAtom();
|
|
974 |
}
|
|
975 |
|
|
976 |
XToolkit.awtLock();
|
|
977 |
try {
|
|
978 |
XlibWrapper.XConvertSelection(XToolkit.getDisplay(),
|
|
979 |
sel_atom,
|
|
980 |
status_atom,
|
|
981 |
MotifDnDConstants.XA_MOTIF_ATOM_0.getAtom(),
|
|
982 |
XWindow.getXAWTRootWindow().getWindow(),
|
|
983 |
time_stamp);
|
|
984 |
|
|
985 |
/*
|
|
986 |
* Flush the buffer to guarantee that the drop completion event is sent
|
|
987 |
* to the source before the method returns.
|
|
988 |
*/
|
|
989 |
XlibWrapper.XFlush(XToolkit.getDisplay());
|
|
990 |
} finally {
|
|
991 |
XToolkit.awtUnlock();
|
|
992 |
}
|
|
993 |
|
|
994 |
/* Trick to prevent cleanup() from posting dragExit */
|
|
995 |
targetXWindow = null;
|
|
996 |
|
|
997 |
/* Cannot do cleanup before the drop finishes as we may need
|
|
998 |
source protocol version to send drop finished message. */
|
|
999 |
cleanup();
|
|
1000 |
return true;
|
|
1001 |
}
|
|
1002 |
|
|
1003 |
public final long getSourceWindow() {
|
|
1004 |
return sourceWindow;
|
|
1005 |
}
|
|
1006 |
|
|
1007 |
/**
|
|
1008 |
* Reset the state of the object.
|
|
1009 |
*/
|
|
1010 |
public void cleanup() {
|
|
1011 |
// Clear the reference to this protocol.
|
|
1012 |
XDropTargetEventProcessor.reset();
|
|
1013 |
|
|
1014 |
if (targetXWindow != null) {
|
|
1015 |
notifyProtocolListener(targetXWindow, 0, 0,
|
|
1016 |
DnDConstants.ACTION_NONE, sourceActions,
|
|
1017 |
null, MouseEvent.MOUSE_EXITED);
|
|
1018 |
}
|
|
1019 |
|
|
1020 |
if (sourceWindow != 0) {
|
|
1021 |
XToolkit.awtLock();
|
|
1022 |
try {
|
|
1023 |
XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler);
|
|
1024 |
XlibWrapper.XSelectInput(XToolkit.getDisplay(), sourceWindow,
|
|
1025 |
sourceWindowMask);
|
|
1026 |
XToolkit.RESTORE_XERROR_HANDLER();
|
|
1027 |
} finally {
|
|
1028 |
XToolkit.awtUnlock();
|
|
1029 |
}
|
|
1030 |
}
|
|
1031 |
|
|
1032 |
sourceWindow = 0;
|
|
1033 |
sourceWindowMask = 0;
|
|
1034 |
sourceProtocolVersion = 0;
|
|
1035 |
sourceActions = DnDConstants.ACTION_NONE;
|
|
1036 |
sourceFormats = null;
|
|
1037 |
sourceAtom = 0;
|
|
1038 |
userAction = DnDConstants.ACTION_NONE;
|
|
1039 |
sourceX = 0;
|
|
1040 |
sourceY = 0;
|
|
1041 |
targetXWindow = null;
|
|
1042 |
topLevelLeavePostponed = false;
|
|
1043 |
}
|
|
1044 |
|
|
1045 |
public boolean isDragOverComponent() {
|
|
1046 |
return targetXWindow != null;
|
|
1047 |
}
|
|
1048 |
|
|
1049 |
private void notifyProtocolListener(XWindow xwindow, int x, int y,
|
|
1050 |
int dropAction, int actions,
|
|
1051 |
XClientMessageEvent xclient,
|
|
1052 |
int eventID) {
|
|
1053 |
long nativeCtxt = 0;
|
|
1054 |
|
|
1055 |
// Make a copy of the passed XClientMessageEvent structure, since
|
|
1056 |
// the original structure can be freed before this
|
|
1057 |
// SunDropTargetEvent is dispatched.
|
|
1058 |
if (xclient != null) {
|
|
1059 |
int size = new XClientMessageEvent(nativeCtxt).getSize();
|
|
1060 |
|
|
1061 |
nativeCtxt = unsafe.allocateMemory(size + 4 * Native.getLongSize());
|
|
1062 |
|
|
1063 |
unsafe.copyMemory(xclient.pData, nativeCtxt, size);
|
|
1064 |
}
|
|
1065 |
|
|
1066 |
getProtocolListener().handleDropTargetNotification(xwindow, x, y,
|
|
1067 |
dropAction,
|
|
1068 |
actions,
|
|
1069 |
sourceFormats,
|
|
1070 |
nativeCtxt,
|
|
1071 |
eventID);
|
|
1072 |
}
|
|
1073 |
}
|