--- old/src/java.desktop/share/classes/java/awt/datatransfer/Clipboard.java 2015-01-13 22:33:53.618260100 +0400 +++ /dev/null 2015-01-13 22:33:53.000000000 +0400 @@ -1,352 +0,0 @@ -/* - * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package java.awt.datatransfer; - -import sun.datatransfer.DataFlavorUtil; - -import java.util.Objects; -import java.util.Set; -import java.util.HashSet; -import java.util.Arrays; - -import java.io.IOException; - -/** - * A class that implements a mechanism to transfer data using - * cut/copy/paste operations. - *
- * {@link FlavorListener}s may be registered on an instance of the
- * Clipboard class to be notified about changes to the set of
- * {@link DataFlavor}s available on this clipboard (see
- * {@link #addFlavorListener}).
- *
- * @see java.awt.Toolkit#getSystemClipboard
- * @see java.awt.Toolkit#getSystemSelection
- *
- * @author Amy Fowler
- * @author Alexander Gerasimov
- */
-public class Clipboard {
-
- String name;
-
- /**
- * The owner of the clipboard.
- */
- protected ClipboardOwner owner;
- /**
- * Contents of the clipboard.
- */
- protected Transferable contents;
-
- /**
- * An aggregate of flavor listeners registered on this local clipboard.
- *
- * @since 1.5
- */
- private Set
- * If there is an existing owner different from the argument
- *
- * The method throws
+ * {@link FlavorListener}s may be registered on an instance of the
+ * Clipboard class to be notified about changes to the set of
+ * {@link DataFlavor}s available on this clipboard (see
+ * {@link #addFlavorListener}).
+ *
+ * @see java.awt.Toolkit#getSystemClipboard
+ * @see java.awt.Toolkit#getSystemSelection
+ *
+ * @author Amy Fowler
+ * @author Alexander Gerasimov
+ */
+public class Clipboard {
+
+ String name;
+
+ /**
+ * The owner of the clipboard.
+ */
+ protected ClipboardOwner owner;
+ /**
+ * Contents of the clipboard.
+ */
+ protected Transferable contents;
+
+ /**
+ * An aggregate of flavor listeners registered on this local clipboard.
+ *
+ * @since 1.5
+ */
+ private Set
+ * If there is an existing owner different from the argument
+ *
+ * The method throws DataFlavor
s that is available on
- * this local clipboard. It is used for tracking changes
- * of DataFlavor
s available on this clipboard.
- *
- * @since 1.5
- */
- private Setowner
, that owner is notified that it no longer
- * holds ownership of the clipboard contents via an invocation
- * of ClipboardOwner.lostOwnership()
on that owner.
- * An implementation of setContents()
is free not
- * to invoke lostOwnership()
directly from this method.
- * For example, lostOwnership()
may be invoked later on
- * a different thread. The same applies to FlavorListener
s
- * registered on this clipboard.
- * IllegalStateException
if the clipboard
- * is currently unavailable. For example, on some platforms, the system
- * clipboard is unavailable while it is accessed by another application.
- *
- * @param contents the transferable object representing the
- * clipboard content
- * @param owner the object which owns the clipboard content
- * @throws IllegalStateException if the clipboard is currently unavailable
- * @see java.awt.Toolkit#getSystemClipboard
- */
- public synchronized void setContents(Transferable contents, ClipboardOwner owner) {
- final ClipboardOwner oldOwner = this.owner;
- final Transferable oldContents = this.contents;
-
- this.owner = owner;
- this.contents = contents;
-
- if (oldOwner != null && oldOwner != owner) {
- DataFlavorUtil.getDesktopService().invokeOnEventThread(() ->
- oldOwner.lostOwnership(Clipboard.this, oldContents));
- }
- fireFlavorsChanged();
- }
-
- /**
- * Returns a transferable object representing the current contents
- * of the clipboard. If the clipboard currently has no contents,
- * it returns null
. The parameter Object requestor is
- * not currently used. The method throws
- * IllegalStateException
if the clipboard is currently
- * unavailable. For example, on some platforms, the system clipboard is
- * unavailable while it is accessed by another application.
- *
- * @param requestor the object requesting the clip data (not used)
- * @return the current transferable object on the clipboard
- * @throws IllegalStateException if the clipboard is currently unavailable
- * @see java.awt.Toolkit#getSystemClipboard
- */
- public synchronized Transferable getContents(Object requestor) {
- return contents;
- }
-
-
- /**
- * Returns an array of DataFlavor
s in which the current
- * contents of this clipboard can be provided. If there are no
- * DataFlavor
s available, this method returns a zero-length
- * array.
- *
- * @return an array of DataFlavor
s in which the current
- * contents of this clipboard can be provided
- *
- * @throws IllegalStateException if this clipboard is currently unavailable
- *
- * @since 1.5
- */
- public DataFlavor[] getAvailableDataFlavors() {
- Transferable cntnts = getContents(null);
- if (cntnts == null) {
- return new DataFlavor[0];
- }
- return cntnts.getTransferDataFlavors();
- }
-
- /**
- * Returns whether or not the current contents of this clipboard can be
- * provided in the specified DataFlavor
.
- *
- * @param flavor the requested DataFlavor
for the contents
- *
- * @return true
if the current contents of this clipboard
- * can be provided in the specified DataFlavor
;
- * false
otherwise
- *
- * @throws NullPointerException if flavor
is null
- * @throws IllegalStateException if this clipboard is currently unavailable
- *
- * @since 1.5
- */
- public boolean isDataFlavorAvailable(DataFlavor flavor) {
- if (flavor == null) {
- throw new NullPointerException("flavor");
- }
-
- Transferable cntnts = getContents(null);
- if (cntnts == null) {
- return false;
- }
- return cntnts.isDataFlavorSupported(flavor);
- }
-
- /**
- * Returns an object representing the current contents of this clipboard
- * in the specified DataFlavor
.
- * The class of the object returned is defined by the representation
- * class of flavor
.
- *
- * @param flavor the requested DataFlavor
for the contents
- *
- * @return an object representing the current contents of this clipboard
- * in the specified DataFlavor
- *
- * @throws NullPointerException if flavor
is null
- * @throws IllegalStateException if this clipboard is currently unavailable
- * @throws UnsupportedFlavorException if the requested DataFlavor
- * is not available
- * @throws IOException if the data in the requested DataFlavor
- * can not be retrieved
- *
- * @see DataFlavor#getRepresentationClass
- *
- * @since 1.5
- */
- public Object getData(DataFlavor flavor)
- throws UnsupportedFlavorException, IOException {
- if (flavor == null) {
- throw new NullPointerException("flavor");
- }
-
- Transferable cntnts = getContents(null);
- if (cntnts == null) {
- throw new UnsupportedFlavorException(flavor);
- }
- return cntnts.getTransferData(flavor);
- }
-
-
- /**
- * Registers the specified FlavorListener
to receive
- * FlavorEvent
s from this clipboard.
- * If listener
is null
, no exception
- * is thrown and no action is performed.
- *
- * @param listener the listener to be added
- *
- * @see #removeFlavorListener
- * @see #getFlavorListeners
- * @see FlavorListener
- * @see FlavorEvent
- * @since 1.5
- */
- public synchronized void addFlavorListener(FlavorListener listener) {
- if (listener == null) {
- return;
- }
-
- if (flavorListeners == null) {
- flavorListeners = new HashSet<>();
- currentDataFlavors = getAvailableDataFlavorSet();
- }
-
- flavorListeners.add(listener);
- }
-
- /**
- * Removes the specified FlavorListener
so that it no longer
- * receives FlavorEvent
s from this Clipboard
.
- * This method performs no function, nor does it throw an exception, if
- * the listener specified by the argument was not previously added to this
- * Clipboard
.
- * If listener
is null
, no exception
- * is thrown and no action is performed.
- *
- * @param listener the listener to be removed
- *
- * @see #addFlavorListener
- * @see #getFlavorListeners
- * @see FlavorListener
- * @see FlavorEvent
- * @since 1.5
- */
- public synchronized void removeFlavorListener(FlavorListener listener) {
- if (listener == null || flavorListeners == null) {
- return;
- }
- flavorListeners.remove(listener);
- }
-
- /**
- * Returns an array of all the FlavorListener
s currently
- * registered on this Clipboard
.
- *
- * @return all of this clipboard's FlavorListener
s or an empty
- * array if no listeners are currently registered
- * @see #addFlavorListener
- * @see #removeFlavorListener
- * @see FlavorListener
- * @see FlavorEvent
- * @since 1.5
- */
- public synchronized FlavorListener[] getFlavorListeners() {
- return flavorListeners == null ? new FlavorListener[0] :
- flavorListeners.toArray(new FlavorListener[flavorListeners.size()]);
- }
-
- /**
- * Checks change of the DataFlavor
s and, if necessary,
- * notifies all listeners that have registered interest for notification
- * on FlavorEvent
s.
- *
- * @since 1.5
- */
- private void fireFlavorsChanged() {
- if (flavorListeners == null) {
- return;
- }
-
- SetDataFlavor
s currently available
- * on this clipboard.
- *
- * @return a set of DataFlavor
s currently available
- * on this clipboard
- *
- * @since 1.5
- */
- private SetDataFlavor
s that is available on
+ * this local clipboard. It is used for tracking changes
+ * of DataFlavor
s available on this clipboard.
+ *
+ * @since 1.5
+ */
+ private Setowner
, that owner is notified that it no longer
+ * holds ownership of the clipboard contents via an invocation
+ * of ClipboardOwner.lostOwnership()
on that owner.
+ * An implementation of setContents()
is free not
+ * to invoke lostOwnership()
directly from this method.
+ * For example, lostOwnership()
may be invoked later on
+ * a different thread. The same applies to FlavorListener
s
+ * registered on this clipboard.
+ * IllegalStateException
if the clipboard
+ * is currently unavailable. For example, on some platforms, the system
+ * clipboard is unavailable while it is accessed by another application.
+ *
+ * @param contents the transferable object representing the
+ * clipboard content
+ * @param owner the object which owns the clipboard content
+ * @throws IllegalStateException if the clipboard is currently unavailable
+ * @see java.awt.Toolkit#getSystemClipboard
+ */
+ public synchronized void setContents(Transferable contents, ClipboardOwner owner) {
+ final ClipboardOwner oldOwner = this.owner;
+ final Transferable oldContents = this.contents;
+
+ this.owner = owner;
+ this.contents = contents;
+
+ if (oldOwner != null && oldOwner != owner) {
+ DataFlavorUtil.getDesktopService().invokeOnEventThread(() ->
+ oldOwner.lostOwnership(Clipboard.this, oldContents));
+ }
+ fireFlavorsChanged();
+ }
+
+ /**
+ * Returns a transferable object representing the current contents
+ * of the clipboard. If the clipboard currently has no contents,
+ * it returns null
. The parameter Object requestor is
+ * not currently used. The method throws
+ * IllegalStateException
if the clipboard is currently
+ * unavailable. For example, on some platforms, the system clipboard is
+ * unavailable while it is accessed by another application.
+ *
+ * @param requestor the object requesting the clip data (not used)
+ * @return the current transferable object on the clipboard
+ * @throws IllegalStateException if the clipboard is currently unavailable
+ * @see java.awt.Toolkit#getSystemClipboard
+ */
+ public synchronized Transferable getContents(Object requestor) {
+ return contents;
+ }
+
+
+ /**
+ * Returns an array of DataFlavor
s in which the current
+ * contents of this clipboard can be provided. If there are no
+ * DataFlavor
s available, this method returns a zero-length
+ * array.
+ *
+ * @return an array of DataFlavor
s in which the current
+ * contents of this clipboard can be provided
+ *
+ * @throws IllegalStateException if this clipboard is currently unavailable
+ *
+ * @since 1.5
+ */
+ public DataFlavor[] getAvailableDataFlavors() {
+ Transferable cntnts = getContents(null);
+ if (cntnts == null) {
+ return new DataFlavor[0];
+ }
+ return cntnts.getTransferDataFlavors();
+ }
+
+ /**
+ * Returns whether or not the current contents of this clipboard can be
+ * provided in the specified DataFlavor
.
+ *
+ * @param flavor the requested DataFlavor
for the contents
+ *
+ * @return true
if the current contents of this clipboard
+ * can be provided in the specified DataFlavor
;
+ * false
otherwise
+ *
+ * @throws NullPointerException if flavor
is null
+ * @throws IllegalStateException if this clipboard is currently unavailable
+ *
+ * @since 1.5
+ */
+ public boolean isDataFlavorAvailable(DataFlavor flavor) {
+ if (flavor == null) {
+ throw new NullPointerException("flavor");
+ }
+
+ Transferable cntnts = getContents(null);
+ if (cntnts == null) {
+ return false;
+ }
+ return cntnts.isDataFlavorSupported(flavor);
+ }
+
+ /**
+ * Returns an object representing the current contents of this clipboard
+ * in the specified DataFlavor
.
+ * The class of the object returned is defined by the representation
+ * class of flavor
.
+ *
+ * @param flavor the requested DataFlavor
for the contents
+ *
+ * @return an object representing the current contents of this clipboard
+ * in the specified DataFlavor
+ *
+ * @throws NullPointerException if flavor
is null
+ * @throws IllegalStateException if this clipboard is currently unavailable
+ * @throws UnsupportedFlavorException if the requested DataFlavor
+ * is not available
+ * @throws IOException if the data in the requested DataFlavor
+ * can not be retrieved
+ *
+ * @see DataFlavor#getRepresentationClass
+ *
+ * @since 1.5
+ */
+ public Object getData(DataFlavor flavor)
+ throws UnsupportedFlavorException, IOException {
+ if (flavor == null) {
+ throw new NullPointerException("flavor");
+ }
+
+ Transferable cntnts = getContents(null);
+ if (cntnts == null) {
+ throw new UnsupportedFlavorException(flavor);
+ }
+ return cntnts.getTransferData(flavor);
+ }
+
+
+ /**
+ * Registers the specified FlavorListener
to receive
+ * FlavorEvent
s from this clipboard.
+ * If listener
is null
, no exception
+ * is thrown and no action is performed.
+ *
+ * @param listener the listener to be added
+ *
+ * @see #removeFlavorListener
+ * @see #getFlavorListeners
+ * @see FlavorListener
+ * @see FlavorEvent
+ * @since 1.5
+ */
+ public synchronized void addFlavorListener(FlavorListener listener) {
+ if (listener == null) {
+ return;
+ }
+
+ if (flavorListeners == null) {
+ flavorListeners = new HashSet<>();
+ currentDataFlavors = getAvailableDataFlavorSet();
+ }
+
+ flavorListeners.add(listener);
+ }
+
+ /**
+ * Removes the specified FlavorListener
so that it no longer
+ * receives FlavorEvent
s from this Clipboard
.
+ * This method performs no function, nor does it throw an exception, if
+ * the listener specified by the argument was not previously added to this
+ * Clipboard
.
+ * If listener
is null
, no exception
+ * is thrown and no action is performed.
+ *
+ * @param listener the listener to be removed
+ *
+ * @see #addFlavorListener
+ * @see #getFlavorListeners
+ * @see FlavorListener
+ * @see FlavorEvent
+ * @since 1.5
+ */
+ public synchronized void removeFlavorListener(FlavorListener listener) {
+ if (listener == null || flavorListeners == null) {
+ return;
+ }
+ flavorListeners.remove(listener);
+ }
+
+ /**
+ * Returns an array of all the FlavorListener
s currently
+ * registered on this Clipboard
.
+ *
+ * @return all of this clipboard's FlavorListener
s or an empty
+ * array if no listeners are currently registered
+ * @see #addFlavorListener
+ * @see #removeFlavorListener
+ * @see FlavorListener
+ * @see FlavorEvent
+ * @since 1.5
+ */
+ public synchronized FlavorListener[] getFlavorListeners() {
+ return flavorListeners == null ? new FlavorListener[0] :
+ flavorListeners.toArray(new FlavorListener[flavorListeners.size()]);
+ }
+
+ /**
+ * Checks change of the DataFlavor
s and, if necessary,
+ * notifies all listeners that have registered interest for notification
+ * on FlavorEvent
s.
+ *
+ * @since 1.5
+ */
+ private void fireFlavorsChanged() {
+ if (flavorListeners == null) {
+ return;
+ }
+
+ SetDataFlavor
s currently available
+ * on this clipboard.
+ *
+ * @return a set of DataFlavor
s currently available
+ * on this clipboard
+ *
+ * @since 1.5
+ */
+ private Set