author | jqzuo |
Thu, 30 Jan 2014 10:36:40 -0500 | |
changeset 23276 | add6f5c93bc6 |
parent 23241 | e59e85da457f |
parent 22060 | cd4f9d7dbeda |
child 24525 | 8bb9924dc95b |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 2000, 2013, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.awt.dnd; |
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import java.awt.Component; |
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import java.awt.Point; |
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31 |
import java.awt.datatransfer.DataFlavor; |
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import java.awt.datatransfer.Transferable; |
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import java.awt.datatransfer.UnsupportedFlavorException; |
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import java.awt.dnd.DnDConstants; |
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import java.awt.dnd.DropTarget; |
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import java.awt.dnd.DropTargetContext; |
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import java.awt.dnd.DropTargetListener; |
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import java.awt.dnd.DropTargetEvent; |
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import java.awt.dnd.DropTargetDragEvent; |
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import java.awt.dnd.DropTargetDropEvent; |
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import java.awt.dnd.InvalidDnDOperationException; |
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import java.awt.dnd.peer.DropTargetContextPeer; |
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import java.util.HashSet; |
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import java.util.Map; |
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import java.util.Arrays; |
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import sun.util.logging.PlatformLogger; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import sun.awt.AppContext; |
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import sun.awt.AWTPermissions; |
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import sun.awt.SunToolkit; |
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import sun.awt.datatransfer.DataTransferer; |
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import sun.awt.datatransfer.ToolkitThreadBlockedHandler; |
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/** |
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* <p> |
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* The SunDropTargetContextPeer class is the generic class responsible for handling |
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* the interaction between a windowing systems DnD system and Java. |
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* </p> |
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* |
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* @since JDK1.3.1 |
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* |
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*/ |
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public abstract class SunDropTargetContextPeer implements DropTargetContextPeer, Transferable { |
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/* |
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* A boolean constant that requires the peer to wait until the |
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* SunDropTargetEvent is processed and return the status back |
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* to the native code. |
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*/ |
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public static final boolean DISPATCH_SYNC = true; |
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private DropTarget currentDT; |
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private DropTargetContext currentDTC; |
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private long[] currentT; |
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private int currentA; // target actions |
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private int currentSA; // source actions |
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private int currentDA; // current drop action |
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private int previousDA; |
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private long nativeDragContext; |
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private Transferable local; |
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private boolean dragRejected = false; |
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protected int dropStatus = STATUS_NONE; |
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protected boolean dropComplete = false; |
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// The flag is used to monitor whether the drop action is |
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// handled by a user. That allows to distinct during |
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// which operation getTransferData() method is invoked. |
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boolean dropInProcess = false; |
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/* |
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* global lock |
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*/ |
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protected static final Object _globalLock = new Object(); |
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private static final PlatformLogger dndLog = PlatformLogger.getLogger("sun.awt.dnd.SunDropTargetContextPeer"); |
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/* |
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* a primitive mechanism for advertising intra-JVM Transferables |
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*/ |
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protected static Transferable currentJVMLocalSourceTransferable = null; |
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116 |
public static void setCurrentJVMLocalSourceTransferable(Transferable t) throws InvalidDnDOperationException { |
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synchronized(_globalLock) { |
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if (t != null && currentJVMLocalSourceTransferable != null) { |
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throw new InvalidDnDOperationException(); |
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} else { |
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currentJVMLocalSourceTransferable = t; |
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} |
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} |
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} |
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126 |
/** |
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* obtain the transferable iff the operation is in the same VM |
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*/ |
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130 |
private static Transferable getJVMLocalSourceTransferable() { |
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return currentJVMLocalSourceTransferable; |
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} |
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/* |
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* constants used by dropAccept() or dropReject() |
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*/ |
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protected final static int STATUS_NONE = 0; // none pending |
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protected final static int STATUS_WAIT = 1; // drop pending |
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protected final static int STATUS_ACCEPT = 2; |
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protected final static int STATUS_REJECT = -1; |
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/** |
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* create the peer |
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*/ |
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146 |
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public SunDropTargetContextPeer() { |
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148 |
super(); |
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} |
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150 |
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/** |
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152 |
* @return the DropTarget associated with this peer |
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*/ |
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154 |
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public DropTarget getDropTarget() { return currentDT; } |
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156 |
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/** |
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158 |
* @param actions set the current actions |
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159 |
*/ |
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160 |
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161 |
public synchronized void setTargetActions(int actions) { |
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162 |
currentA = actions & |
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(DnDConstants.ACTION_COPY_OR_MOVE | DnDConstants.ACTION_LINK); |
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} |
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/** |
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167 |
* @return the current target actions |
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*/ |
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public int getTargetActions() { |
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return currentA; |
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} |
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/** |
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175 |
* get the Transferable associated with the drop |
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*/ |
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public Transferable getTransferable() { |
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return this; |
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} |
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/** |
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183 |
* @return current DataFlavors available |
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*/ |
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// NOTE: This method may be called by privileged threads. |
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// DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
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188 |
public DataFlavor[] getTransferDataFlavors() { |
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final Transferable localTransferable = local; |
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191 |
if (localTransferable != null) { |
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return localTransferable.getTransferDataFlavors(); |
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193 |
} else { |
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return DataTransferer.getInstance().getFlavorsForFormatsAsArray |
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(currentT, DataTransferer.adaptFlavorMap |
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(currentDT.getFlavorMap())); |
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} |
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} |
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/** |
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* @return if the flavor is supported |
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*/ |
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204 |
public boolean isDataFlavorSupported(DataFlavor df) { |
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Transferable localTransferable = local; |
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207 |
if (localTransferable != null) { |
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return localTransferable.isDataFlavorSupported(df); |
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209 |
} else { |
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return DataTransferer.getInstance().getFlavorsForFormats |
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(currentT, DataTransferer.adaptFlavorMap |
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(currentDT.getFlavorMap())). |
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containsKey(df); |
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} |
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} |
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/** |
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* @return the data |
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*/ |
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public Object getTransferData(DataFlavor df) |
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throws UnsupportedFlavorException, IOException, |
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InvalidDnDOperationException |
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{ |
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SecurityManager sm = System.getSecurityManager(); |
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try { |
7493 | 228 |
if (!dropInProcess && sm != null) { |
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sm.checkPermission(AWTPermissions.ACCESS_CLIPBOARD_PERMISSION); |
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} |
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} catch (Exception e) { |
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Thread currentThread = Thread.currentThread(); |
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currentThread.getUncaughtExceptionHandler().uncaughtException(currentThread, e); |
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return null; |
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} |
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|
2 | 237 |
Long lFormat = null; |
238 |
Transferable localTransferable = local; |
|
239 |
||
240 |
if (localTransferable != null) { |
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241 |
return localTransferable.getTransferData(df); |
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242 |
} |
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243 |
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244 |
if (dropStatus != STATUS_ACCEPT || dropComplete) { |
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throw new InvalidDnDOperationException("No drop current"); |
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} |
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248 |
Map flavorMap = DataTransferer.getInstance().getFlavorsForFormats |
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(currentT, DataTransferer.adaptFlavorMap |
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(currentDT.getFlavorMap())); |
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252 |
lFormat = (Long)flavorMap.get(df); |
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if (lFormat == null) { |
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throw new UnsupportedFlavorException(df); |
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} |
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256 |
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257 |
if (df.isRepresentationClassRemote() && |
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currentDA != DnDConstants.ACTION_LINK) { |
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259 |
throw new InvalidDnDOperationException("only ACTION_LINK is permissable for transfer of java.rmi.Remote objects"); |
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260 |
} |
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261 |
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262 |
final long format = lFormat.longValue(); |
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16705 | 263 |
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2 | 264 |
Object ret = getNativeData(format); |
265 |
||
266 |
if (ret instanceof byte[]) { |
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267 |
try { |
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268 |
return DataTransferer.getInstance(). |
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269 |
translateBytes((byte[])ret, df, format, this); |
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270 |
} catch (IOException e) { |
|
271 |
throw new InvalidDnDOperationException(e.getMessage()); |
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272 |
} |
|
273 |
} else if (ret instanceof InputStream) { |
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274 |
try { |
|
275 |
return DataTransferer.getInstance(). |
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276 |
translateStream((InputStream)ret, df, format, this); |
2 | 277 |
} catch (IOException e) { |
278 |
throw new InvalidDnDOperationException(e.getMessage()); |
|
279 |
} |
|
280 |
} else { |
|
281 |
throw new IOException("no native data was transfered"); |
|
282 |
} |
|
283 |
} |
|
284 |
||
285 |
protected abstract Object getNativeData(long format) |
|
286 |
throws IOException; |
|
287 |
||
288 |
/** |
|
289 |
* @return if the transfer is a local one |
|
290 |
*/ |
|
291 |
public boolean isTransferableJVMLocal() { |
|
292 |
return local != null || getJVMLocalSourceTransferable() != null; |
|
293 |
} |
|
294 |
||
295 |
private int handleEnterMessage(final Component component, |
|
296 |
final int x, final int y, |
|
297 |
final int dropAction, |
|
298 |
final int actions, final long[] formats, |
|
299 |
final long nativeCtxt) { |
|
300 |
return postDropTargetEvent(component, x, y, dropAction, actions, |
|
301 |
formats, nativeCtxt, |
|
302 |
SunDropTargetEvent.MOUSE_ENTERED, |
|
303 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
304 |
} |
|
305 |
||
306 |
/** |
|
307 |
* actual processing on EventQueue Thread |
|
308 |
*/ |
|
309 |
||
310 |
protected void processEnterMessage(SunDropTargetEvent event) { |
|
311 |
Component c = (Component)event.getSource(); |
|
312 |
DropTarget dt = c.getDropTarget(); |
|
313 |
Point hots = event.getPoint(); |
|
314 |
||
315 |
local = getJVMLocalSourceTransferable(); |
|
316 |
||
317 |
if (currentDTC != null) { // some wreckage from last time |
|
318 |
currentDTC.removeNotify(); |
|
319 |
currentDTC = null; |
|
320 |
} |
|
321 |
||
322 |
if (c.isShowing() && dt != null && dt.isActive()) { |
|
323 |
currentDT = dt; |
|
324 |
currentDTC = currentDT.getDropTargetContext(); |
|
325 |
||
326 |
currentDTC.addNotify(this); |
|
327 |
||
328 |
currentA = dt.getDefaultActions(); |
|
329 |
||
330 |
try { |
|
331 |
((DropTargetListener)dt).dragEnter(new DropTargetDragEvent(currentDTC, |
|
332 |
hots, |
|
333 |
currentDA, |
|
334 |
currentSA)); |
|
335 |
} catch (Exception e) { |
|
336 |
e.printStackTrace(); |
|
337 |
currentDA = DnDConstants.ACTION_NONE; |
|
338 |
} |
|
339 |
} else { |
|
340 |
currentDT = null; |
|
341 |
currentDTC = null; |
|
342 |
currentDA = DnDConstants.ACTION_NONE; |
|
343 |
currentSA = DnDConstants.ACTION_NONE; |
|
344 |
currentA = DnDConstants.ACTION_NONE; |
|
345 |
} |
|
346 |
||
347 |
} |
|
348 |
||
349 |
/** |
|
350 |
* upcall to handle exit messages |
|
351 |
*/ |
|
352 |
||
353 |
private void handleExitMessage(final Component component, |
|
354 |
final long nativeCtxt) { |
|
355 |
/* |
|
356 |
* Even though the return value is irrelevant for this event, it is |
|
357 |
* dispatched synchronously to fix 4393148 properly. |
|
358 |
*/ |
|
359 |
postDropTargetEvent(component, 0, 0, DnDConstants.ACTION_NONE, |
|
360 |
DnDConstants.ACTION_NONE, null, nativeCtxt, |
|
361 |
SunDropTargetEvent.MOUSE_EXITED, |
|
362 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
363 |
} |
|
364 |
||
365 |
/** |
|
366 |
* |
|
367 |
*/ |
|
368 |
||
369 |
protected void processExitMessage(SunDropTargetEvent event) { |
|
370 |
Component c = (Component)event.getSource(); |
|
371 |
DropTarget dt = c.getDropTarget(); |
|
372 |
DropTargetContext dtc = null; |
|
373 |
||
374 |
if (dt == null) { |
|
375 |
currentDT = null; |
|
376 |
currentT = null; |
|
377 |
||
378 |
if (currentDTC != null) { |
|
379 |
currentDTC.removeNotify(); |
|
380 |
} |
|
381 |
||
382 |
currentDTC = null; |
|
383 |
||
384 |
return; |
|
385 |
} |
|
386 |
||
387 |
if (dt != currentDT) { |
|
388 |
||
389 |
if (currentDTC != null) { |
|
390 |
currentDTC.removeNotify(); |
|
391 |
} |
|
392 |
||
393 |
currentDT = dt; |
|
394 |
currentDTC = dt.getDropTargetContext(); |
|
395 |
||
396 |
currentDTC.addNotify(this); |
|
397 |
} |
|
398 |
||
399 |
dtc = currentDTC; |
|
400 |
||
401 |
if (dt.isActive()) try { |
|
402 |
((DropTargetListener)dt).dragExit(new DropTargetEvent(dtc)); |
|
403 |
} catch (Exception e) { |
|
404 |
e.printStackTrace(); |
|
405 |
} finally { |
|
406 |
currentA = DnDConstants.ACTION_NONE; |
|
407 |
currentSA = DnDConstants.ACTION_NONE; |
|
408 |
currentDA = DnDConstants.ACTION_NONE; |
|
409 |
currentDT = null; |
|
410 |
currentT = null; |
|
411 |
||
412 |
currentDTC.removeNotify(); |
|
413 |
currentDTC = null; |
|
414 |
||
415 |
local = null; |
|
416 |
||
417 |
dragRejected = false; |
|
418 |
} |
|
419 |
} |
|
420 |
||
421 |
private int handleMotionMessage(final Component component, |
|
422 |
final int x, final int y, |
|
423 |
final int dropAction, |
|
424 |
final int actions, final long[] formats, |
|
425 |
final long nativeCtxt) { |
|
426 |
return postDropTargetEvent(component, x, y, dropAction, actions, |
|
427 |
formats, nativeCtxt, |
|
428 |
SunDropTargetEvent.MOUSE_DRAGGED, |
|
429 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
430 |
} |
|
431 |
||
432 |
/** |
|
433 |
* |
|
434 |
*/ |
|
435 |
||
436 |
protected void processMotionMessage(SunDropTargetEvent event, |
|
437 |
boolean operationChanged) { |
|
438 |
Component c = (Component)event.getSource(); |
|
439 |
Point hots = event.getPoint(); |
|
440 |
int id = event.getID(); |
|
441 |
DropTarget dt = c.getDropTarget(); |
|
442 |
DropTargetContext dtc = null; |
|
443 |
||
444 |
if (c.isShowing() && (dt != null) && dt.isActive()) { |
|
445 |
if (currentDT != dt) { |
|
446 |
if (currentDTC != null) { |
|
447 |
currentDTC.removeNotify(); |
|
448 |
} |
|
449 |
||
450 |
currentDT = dt; |
|
451 |
currentDTC = null; |
|
452 |
} |
|
453 |
||
454 |
dtc = currentDT.getDropTargetContext(); |
|
455 |
if (dtc != currentDTC) { |
|
456 |
if (currentDTC != null) { |
|
457 |
currentDTC.removeNotify(); |
|
458 |
} |
|
459 |
||
460 |
currentDTC = dtc; |
|
461 |
currentDTC.addNotify(this); |
|
462 |
} |
|
463 |
||
464 |
currentA = currentDT.getDefaultActions(); |
|
465 |
||
466 |
try { |
|
467 |
DropTargetDragEvent dtde = new DropTargetDragEvent(dtc, |
|
468 |
hots, |
|
469 |
currentDA, |
|
470 |
currentSA); |
|
471 |
DropTargetListener dtl = (DropTargetListener)dt; |
|
472 |
if (operationChanged) { |
|
473 |
dtl.dropActionChanged(dtde); |
|
474 |
} else { |
|
475 |
dtl.dragOver(dtde); |
|
476 |
} |
|
477 |
||
478 |
if (dragRejected) { |
|
479 |
currentDA = DnDConstants.ACTION_NONE; |
|
480 |
} |
|
481 |
} catch (Exception e) { |
|
482 |
e.printStackTrace(); |
|
483 |
currentDA = DnDConstants.ACTION_NONE; |
|
484 |
} |
|
485 |
} else { |
|
486 |
currentDA = DnDConstants.ACTION_NONE; |
|
487 |
} |
|
488 |
} |
|
489 |
||
490 |
/** |
|
491 |
* upcall to handle the Drop message |
|
492 |
*/ |
|
493 |
||
494 |
private void handleDropMessage(final Component component, |
|
495 |
final int x, final int y, |
|
496 |
final int dropAction, final int actions, |
|
497 |
final long[] formats, |
|
498 |
final long nativeCtxt) { |
|
499 |
postDropTargetEvent(component, x, y, dropAction, actions, |
|
500 |
formats, nativeCtxt, |
|
501 |
SunDropTargetEvent.MOUSE_DROPPED, |
|
15987 | 502 |
!SunDropTargetContextPeer.DISPATCH_SYNC); |
2 | 503 |
} |
504 |
||
505 |
/** |
|
506 |
* |
|
507 |
*/ |
|
508 |
||
509 |
protected void processDropMessage(SunDropTargetEvent event) { |
|
510 |
Component c = (Component)event.getSource(); |
|
511 |
Point hots = event.getPoint(); |
|
512 |
DropTarget dt = c.getDropTarget(); |
|
513 |
||
514 |
dropStatus = STATUS_WAIT; // drop pending ACK |
|
515 |
dropComplete = false; |
|
516 |
||
517 |
if (c.isShowing() && dt != null && dt.isActive()) { |
|
518 |
DropTargetContext dtc = dt.getDropTargetContext(); |
|
519 |
||
520 |
currentDT = dt; |
|
521 |
||
522 |
if (currentDTC != null) { |
|
523 |
currentDTC.removeNotify(); |
|
524 |
} |
|
525 |
||
526 |
currentDTC = dtc; |
|
527 |
currentDTC.addNotify(this); |
|
528 |
currentA = dt.getDefaultActions(); |
|
529 |
||
530 |
synchronized(_globalLock) { |
|
531 |
if ((local = getJVMLocalSourceTransferable()) != null) |
|
532 |
setCurrentJVMLocalSourceTransferable(null); |
|
533 |
} |
|
534 |
||
7493 | 535 |
dropInProcess = true; |
536 |
||
2 | 537 |
try { |
538 |
((DropTargetListener)dt).drop(new DropTargetDropEvent(dtc, |
|
539 |
hots, |
|
540 |
currentDA, |
|
541 |
currentSA, |
|
542 |
local != null)); |
|
543 |
} finally { |
|
544 |
if (dropStatus == STATUS_WAIT) { |
|
545 |
rejectDrop(); |
|
546 |
} else if (dropComplete == false) { |
|
547 |
dropComplete(false); |
|
548 |
} |
|
7493 | 549 |
dropInProcess = false; |
2 | 550 |
} |
551 |
} else { |
|
552 |
rejectDrop(); |
|
553 |
} |
|
554 |
} |
|
555 |
||
556 |
protected int postDropTargetEvent(final Component component, |
|
557 |
final int x, final int y, |
|
558 |
final int dropAction, |
|
559 |
final int actions, |
|
560 |
final long[] formats, |
|
561 |
final long nativeCtxt, |
|
562 |
final int eventID, |
|
563 |
final boolean dispatchType) { |
|
564 |
AppContext appContext = SunToolkit.targetToAppContext(component); |
|
565 |
||
566 |
EventDispatcher dispatcher = |
|
567 |
new EventDispatcher(this, dropAction, actions, formats, nativeCtxt, |
|
568 |
dispatchType); |
|
569 |
||
570 |
SunDropTargetEvent event = |
|
571 |
new SunDropTargetEvent(component, eventID, x, y, dispatcher); |
|
572 |
||
573 |
if (dispatchType == SunDropTargetContextPeer.DISPATCH_SYNC) { |
|
574 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().lock(); |
|
575 |
} |
|
576 |
||
577 |
// schedule callback |
|
578 |
SunToolkit.postEvent(appContext, event); |
|
579 |
||
580 |
eventPosted(event); |
|
581 |
||
582 |
if (dispatchType == SunDropTargetContextPeer.DISPATCH_SYNC) { |
|
583 |
while (!dispatcher.isDone()) { |
|
584 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().enter(); |
|
585 |
} |
|
586 |
||
587 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().unlock(); |
|
588 |
||
589 |
// return target's response |
|
590 |
return dispatcher.getReturnValue(); |
|
591 |
} else { |
|
592 |
return 0; |
|
593 |
} |
|
594 |
} |
|
595 |
||
596 |
/** |
|
597 |
* acceptDrag |
|
598 |
*/ |
|
599 |
||
600 |
public synchronized void acceptDrag(int dragOperation) { |
|
601 |
if (currentDT == null) { |
|
602 |
throw new InvalidDnDOperationException("No Drag pending"); |
|
603 |
} |
|
604 |
currentDA = mapOperation(dragOperation); |
|
605 |
if (currentDA != DnDConstants.ACTION_NONE) { |
|
606 |
dragRejected = false; |
|
607 |
} |
|
608 |
} |
|
609 |
||
610 |
/** |
|
611 |
* rejectDrag |
|
612 |
*/ |
|
613 |
||
614 |
public synchronized void rejectDrag() { |
|
615 |
if (currentDT == null) { |
|
616 |
throw new InvalidDnDOperationException("No Drag pending"); |
|
617 |
} |
|
618 |
currentDA = DnDConstants.ACTION_NONE; |
|
619 |
dragRejected = true; |
|
620 |
} |
|
621 |
||
622 |
/** |
|
623 |
* acceptDrop |
|
624 |
*/ |
|
625 |
||
626 |
public synchronized void acceptDrop(int dropOperation) { |
|
627 |
if (dropOperation == DnDConstants.ACTION_NONE) |
|
628 |
throw new IllegalArgumentException("invalid acceptDrop() action"); |
|
629 |
||
23241
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
630 |
if (dropStatus == STATUS_WAIT || dropStatus == STATUS_ACCEPT) { |
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
631 |
currentDA = currentA = mapOperation(dropOperation & currentSA); |
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
632 |
|
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
633 |
dropStatus = STATUS_ACCEPT; |
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
634 |
dropComplete = false; |
e59e85da457f
8029979: Allow multiple calls to DropTargetDropEvent.acceptDrop()
anthony
parents:
21280
diff
changeset
|
635 |
} else { |
2 | 636 |
throw new InvalidDnDOperationException("invalid acceptDrop()"); |
637 |
} |
|
638 |
} |
|
639 |
||
640 |
/** |
|
641 |
* reject Drop |
|
642 |
*/ |
|
643 |
||
644 |
public synchronized void rejectDrop() { |
|
645 |
if (dropStatus != STATUS_WAIT) { |
|
646 |
throw new InvalidDnDOperationException("invalid rejectDrop()"); |
|
647 |
} |
|
648 |
dropStatus = STATUS_REJECT; |
|
649 |
/* |
|
650 |
* Fix for 4285634. |
|
651 |
* The target rejected the drop means that it doesn't perform any |
|
652 |
* drop action. This change is to make Solaris behavior consistent |
|
653 |
* with Win32. |
|
654 |
*/ |
|
655 |
currentDA = DnDConstants.ACTION_NONE; |
|
656 |
dropComplete(false); |
|
657 |
} |
|
658 |
||
659 |
/** |
|
660 |
* mapOperation |
|
661 |
*/ |
|
662 |
||
663 |
private int mapOperation(int operation) { |
|
664 |
int[] operations = { |
|
665 |
DnDConstants.ACTION_MOVE, |
|
666 |
DnDConstants.ACTION_COPY, |
|
667 |
DnDConstants.ACTION_LINK, |
|
668 |
}; |
|
669 |
int ret = DnDConstants.ACTION_NONE; |
|
670 |
||
671 |
for (int i = 0; i < operations.length; i++) { |
|
672 |
if ((operation & operations[i]) == operations[i]) { |
|
673 |
ret = operations[i]; |
|
674 |
break; |
|
675 |
} |
|
676 |
} |
|
677 |
||
678 |
return ret; |
|
679 |
} |
|
680 |
||
681 |
/** |
|
682 |
* signal drop complete |
|
683 |
*/ |
|
684 |
||
685 |
public synchronized void dropComplete(boolean success) { |
|
686 |
if (dropStatus == STATUS_NONE) { |
|
687 |
throw new InvalidDnDOperationException("No Drop pending"); |
|
688 |
} |
|
689 |
||
690 |
if (currentDTC != null) currentDTC.removeNotify(); |
|
691 |
||
692 |
currentDT = null; |
|
693 |
currentDTC = null; |
|
694 |
currentT = null; |
|
695 |
currentA = DnDConstants.ACTION_NONE; |
|
696 |
||
697 |
synchronized(_globalLock) { |
|
698 |
currentJVMLocalSourceTransferable = null; |
|
699 |
} |
|
700 |
||
701 |
dropStatus = STATUS_NONE; |
|
702 |
dropComplete = true; |
|
703 |
||
704 |
try { |
|
705 |
doDropDone(success, currentDA, local != null); |
|
706 |
} finally { |
|
707 |
currentDA = DnDConstants.ACTION_NONE; |
|
708 |
// The native context is invalid after the drop is done. |
|
709 |
// Clear the reference to prohibit access. |
|
710 |
nativeDragContext = 0; |
|
711 |
} |
|
712 |
} |
|
713 |
||
714 |
protected abstract void doDropDone(boolean success, |
|
715 |
int dropAction, boolean isLocal); |
|
716 |
||
717 |
protected synchronized long getNativeDragContext() { |
|
718 |
return nativeDragContext; |
|
719 |
} |
|
720 |
||
721 |
protected void eventPosted(SunDropTargetEvent e) {} |
|
722 |
||
723 |
protected void eventProcessed(SunDropTargetEvent e, int returnValue, |
|
724 |
boolean dispatcherDone) {} |
|
725 |
||
726 |
protected static class EventDispatcher { |
|
727 |
||
728 |
private final SunDropTargetContextPeer peer; |
|
729 |
||
730 |
// context fields |
|
731 |
private final int dropAction; |
|
732 |
private final int actions; |
|
733 |
private final long[] formats; |
|
734 |
private long nativeCtxt; |
|
735 |
private final boolean dispatchType; |
|
736 |
private boolean dispatcherDone = false; |
|
737 |
||
738 |
// dispatcher state fields |
|
739 |
private int returnValue = 0; |
|
740 |
// set of events to be dispatched by this dispatcher |
|
741 |
private final HashSet eventSet = new HashSet(3); |
|
742 |
||
743 |
static final ToolkitThreadBlockedHandler handler = |
|
744 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler(); |
|
745 |
||
746 |
EventDispatcher(SunDropTargetContextPeer peer, |
|
747 |
int dropAction, |
|
748 |
int actions, |
|
749 |
long[] formats, |
|
750 |
long nativeCtxt, |
|
751 |
boolean dispatchType) { |
|
752 |
||
753 |
this.peer = peer; |
|
754 |
this.nativeCtxt = nativeCtxt; |
|
755 |
this.dropAction = dropAction; |
|
756 |
this.actions = actions; |
|
757 |
this.formats = |
|
758 |
(null == formats) ? null : Arrays.copyOf(formats, formats.length); |
|
759 |
this.dispatchType = dispatchType; |
|
760 |
} |
|
761 |
||
762 |
void dispatchEvent(SunDropTargetEvent e) { |
|
763 |
int id = e.getID(); |
|
764 |
||
765 |
switch (id) { |
|
766 |
case SunDropTargetEvent.MOUSE_ENTERED: |
|
767 |
dispatchEnterEvent(e); |
|
768 |
break; |
|
769 |
case SunDropTargetEvent.MOUSE_DRAGGED: |
|
770 |
dispatchMotionEvent(e); |
|
771 |
break; |
|
772 |
case SunDropTargetEvent.MOUSE_EXITED: |
|
773 |
dispatchExitEvent(e); |
|
774 |
break; |
|
775 |
case SunDropTargetEvent.MOUSE_DROPPED: |
|
776 |
dispatchDropEvent(e); |
|
777 |
break; |
|
778 |
default: |
|
779 |
throw new InvalidDnDOperationException(); |
|
780 |
} |
|
781 |
} |
|
782 |
||
783 |
private void dispatchEnterEvent(SunDropTargetEvent e) { |
|
784 |
synchronized (peer) { |
|
785 |
||
786 |
// store the drop action here to track operation changes |
|
787 |
peer.previousDA = dropAction; |
|
788 |
||
789 |
// setup peer context |
|
790 |
peer.nativeDragContext = nativeCtxt; |
|
791 |
peer.currentT = formats; |
|
792 |
peer.currentSA = actions; |
|
793 |
peer.currentDA = dropAction; |
|
794 |
// To allow data retrieval. |
|
795 |
peer.dropStatus = STATUS_ACCEPT; |
|
796 |
peer.dropComplete = false; |
|
797 |
||
798 |
try { |
|
799 |
peer.processEnterMessage(e); |
|
800 |
} finally { |
|
801 |
peer.dropStatus = STATUS_NONE; |
|
802 |
} |
|
803 |
||
804 |
setReturnValue(peer.currentDA); |
|
805 |
} |
|
806 |
} |
|
807 |
||
808 |
private void dispatchMotionEvent(SunDropTargetEvent e) { |
|
809 |
synchronized (peer) { |
|
810 |
||
811 |
boolean operationChanged = peer.previousDA != dropAction; |
|
812 |
peer.previousDA = dropAction; |
|
813 |
||
814 |
// setup peer context |
|
815 |
peer.nativeDragContext = nativeCtxt; |
|
816 |
peer.currentT = formats; |
|
817 |
peer.currentSA = actions; |
|
818 |
peer.currentDA = dropAction; |
|
819 |
// To allow data retrieval. |
|
820 |
peer.dropStatus = STATUS_ACCEPT; |
|
821 |
peer.dropComplete = false; |
|
822 |
||
823 |
try { |
|
824 |
peer.processMotionMessage(e, operationChanged); |
|
825 |
} finally { |
|
826 |
peer.dropStatus = STATUS_NONE; |
|
827 |
} |
|
828 |
||
829 |
setReturnValue(peer.currentDA); |
|
830 |
} |
|
831 |
} |
|
832 |
||
833 |
private void dispatchExitEvent(SunDropTargetEvent e) { |
|
834 |
synchronized (peer) { |
|
835 |
||
836 |
// setup peer context |
|
837 |
peer.nativeDragContext = nativeCtxt; |
|
838 |
||
839 |
peer.processExitMessage(e); |
|
840 |
} |
|
841 |
} |
|
842 |
||
843 |
private void dispatchDropEvent(SunDropTargetEvent e) { |
|
844 |
synchronized (peer) { |
|
845 |
||
846 |
// setup peer context |
|
847 |
peer.nativeDragContext = nativeCtxt; |
|
848 |
peer.currentT = formats; |
|
849 |
peer.currentSA = actions; |
|
850 |
peer.currentDA = dropAction; |
|
851 |
||
852 |
peer.processDropMessage(e); |
|
853 |
} |
|
854 |
} |
|
855 |
||
856 |
void setReturnValue(int ret) { |
|
857 |
returnValue = ret; |
|
858 |
} |
|
859 |
||
860 |
int getReturnValue() { |
|
861 |
return returnValue; |
|
862 |
} |
|
863 |
||
864 |
boolean isDone() { |
|
865 |
return eventSet.isEmpty(); |
|
866 |
} |
|
867 |
||
868 |
void registerEvent(SunDropTargetEvent e) { |
|
869 |
handler.lock(); |
|
18178
ee71c923891d
8016747: Replace deprecated PlatformLogger isLoggable(int) with isLoggable(Level)
chegar
parents:
16705
diff
changeset
|
870 |
if (!eventSet.add(e) && dndLog.isLoggable(PlatformLogger.Level.FINE)) { |
3938
ef327bd847c0
6879044: Eliminate the dependency on logging from the AWT/2D/Swing classes
mchung
parents:
2
diff
changeset
|
871 |
dndLog.fine("Event is already registered: " + e); |
2 | 872 |
} |
873 |
handler.unlock(); |
|
874 |
} |
|
875 |
||
876 |
void unregisterEvent(SunDropTargetEvent e) { |
|
877 |
handler.lock(); |
|
878 |
try { |
|
879 |
if (!eventSet.remove(e)) { |
|
880 |
// This event has already been unregistered. |
|
881 |
return; |
|
882 |
} |
|
883 |
if (eventSet.isEmpty()) { |
|
884 |
if (!dispatcherDone && dispatchType == DISPATCH_SYNC) { |
|
885 |
handler.exit(); |
|
886 |
} |
|
887 |
dispatcherDone = true; |
|
888 |
} |
|
889 |
} finally { |
|
890 |
handler.unlock(); |
|
891 |
} |
|
892 |
||
893 |
try { |
|
894 |
peer.eventProcessed(e, returnValue, dispatcherDone); |
|
895 |
} finally { |
|
896 |
/* |
|
897 |
* Clear the reference to the native context if all copies of |
|
898 |
* the original event are processed. |
|
899 |
*/ |
|
900 |
if (dispatcherDone) { |
|
901 |
nativeCtxt = 0; |
|
902 |
// Fix for 6342381 |
|
903 |
peer.nativeDragContext = 0; |
|
904 |
||
905 |
} |
|
906 |
} |
|
907 |
} |
|
908 |
||
909 |
public void unregisterAllEvents() { |
|
910 |
Object[] events = null; |
|
911 |
handler.lock(); |
|
912 |
try { |
|
913 |
events = eventSet.toArray(); |
|
914 |
} finally { |
|
915 |
handler.unlock(); |
|
916 |
} |
|
917 |
||
918 |
if (events != null) { |
|
919 |
for (int i = 0; i < events.length; i++) { |
|
920 |
unregisterEvent((SunDropTargetEvent)events[i]); |
|
921 |
} |
|
922 |
} |
|
923 |
} |
|
924 |
} |
|
925 |
} |