8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javafx.concurrent;
27
28 import javafx.application.Platform;
29 import javafx.beans.property.BooleanProperty;
30 import javafx.beans.property.DoubleProperty;
31 import javafx.beans.property.ObjectProperty;
32 import javafx.beans.property.ReadOnlyBooleanProperty;
33 import javafx.beans.property.ReadOnlyDoubleProperty;
34 import javafx.beans.property.ReadOnlyObjectProperty;
35 import javafx.beans.property.ReadOnlyStringProperty;
36 import javafx.beans.property.SimpleBooleanProperty;
37 import javafx.beans.property.SimpleDoubleProperty;
38 import javafx.beans.property.SimpleObjectProperty;
39 import javafx.beans.property.SimpleStringProperty;
40 import javafx.beans.property.StringProperty;
41 import javafx.event.Event;
42 import javafx.event.EventDispatchChain;
43 import javafx.event.EventHandler;
44 import javafx.event.EventTarget;
45 import javafx.event.EventType;
46 import java.util.concurrent.Callable;
47 import java.util.concurrent.FutureTask;
977 @Override public final double getProgress() { checkThread(); return progress.get(); }
978 @Override public final ReadOnlyDoubleProperty progressProperty() { checkThread(); return progress; }
979
980 private final BooleanProperty running = new SimpleBooleanProperty(this, "running", false);
981 private void setRunning(boolean value) { checkThread(); running.set(value); }
982 @Override public final boolean isRunning() { checkThread(); return running.get(); }
983 @Override public final ReadOnlyBooleanProperty runningProperty() { checkThread(); return running; }
984
985 private final StringProperty message = new SimpleStringProperty(this, "message", "");
986 @Override public final String getMessage() { checkThread(); return message.get(); }
987 @Override public final ReadOnlyStringProperty messageProperty() { checkThread(); return message; }
988
989 private final StringProperty title = new SimpleStringProperty(this, "title", "");
990 @Override public final String getTitle() { checkThread(); return title.get(); }
991 @Override public final ReadOnlyStringProperty titleProperty() { checkThread(); return title; }
992
993 @Override public final boolean cancel() {
994 return cancel(true);
995 }
996
997 @Override public boolean cancel(boolean mayInterruptIfRunning) {
998 // Delegate to the super implementation to actually attempt to cancel this thing
999 boolean flag = super.cancel(mayInterruptIfRunning);
1000 // If cancel succeeded (according to the semantics of the Future cancel method),
1001 // then we need to make sure the State flag is set appropriately
1002 if (flag) {
1003 // If this method was called on the FX application thread, then we can
1004 // just update the state directly and this will make sure that after
1005 // the cancel method was called, the state will be set correctly
1006 // (otherwise it would be indeterminate). However if the cancel method was
1007 // called off the FX app thread, then we must use runLater, and the
1008 // state flag will not be readable immediately after this call. However,
1009 // that would be the case anyway since these properties are not thread-safe.
1010 if (isFxApplicationThread()) {
1011 setState(State.CANCELLED);
1012 } else {
1013 runLater(() -> setState(State.CANCELLED));
1014 }
1015 }
1016 // return the flag
1017 return flag;
1018 }
1019
|
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javafx.concurrent;
27
28 import java.security.AccessController;
29 import java.security.Permission;
30 import java.security.PrivilegedAction;
31 import javafx.application.Platform;
32 import javafx.beans.property.BooleanProperty;
33 import javafx.beans.property.DoubleProperty;
34 import javafx.beans.property.ObjectProperty;
35 import javafx.beans.property.ReadOnlyBooleanProperty;
36 import javafx.beans.property.ReadOnlyDoubleProperty;
37 import javafx.beans.property.ReadOnlyObjectProperty;
38 import javafx.beans.property.ReadOnlyStringProperty;
39 import javafx.beans.property.SimpleBooleanProperty;
40 import javafx.beans.property.SimpleDoubleProperty;
41 import javafx.beans.property.SimpleObjectProperty;
42 import javafx.beans.property.SimpleStringProperty;
43 import javafx.beans.property.StringProperty;
44 import javafx.event.Event;
45 import javafx.event.EventDispatchChain;
46 import javafx.event.EventHandler;
47 import javafx.event.EventTarget;
48 import javafx.event.EventType;
49 import java.util.concurrent.Callable;
50 import java.util.concurrent.FutureTask;
980 @Override public final double getProgress() { checkThread(); return progress.get(); }
981 @Override public final ReadOnlyDoubleProperty progressProperty() { checkThread(); return progress; }
982
983 private final BooleanProperty running = new SimpleBooleanProperty(this, "running", false);
984 private void setRunning(boolean value) { checkThread(); running.set(value); }
985 @Override public final boolean isRunning() { checkThread(); return running.get(); }
986 @Override public final ReadOnlyBooleanProperty runningProperty() { checkThread(); return running; }
987
988 private final StringProperty message = new SimpleStringProperty(this, "message", "");
989 @Override public final String getMessage() { checkThread(); return message.get(); }
990 @Override public final ReadOnlyStringProperty messageProperty() { checkThread(); return message; }
991
992 private final StringProperty title = new SimpleStringProperty(this, "title", "");
993 @Override public final String getTitle() { checkThread(); return title.get(); }
994 @Override public final ReadOnlyStringProperty titleProperty() { checkThread(); return title; }
995
996 @Override public final boolean cancel() {
997 return cancel(true);
998 }
999
1000 // Need to assert the modifyThread permission so an app can cancel
1001 // a task that it created (the default executor for the service runs in
1002 // its own thread group)
1003 // Note that this is needed when running as an applet or a web start app.
1004 private static final Permission modifyThreadPerm = new RuntimePermission("modifyThread");
1005
1006 @Override public boolean cancel(boolean mayInterruptIfRunning) {
1007 // Delegate to the super implementation to actually attempt to cancel this thing
1008 // Assert the modifyThread permission
1009 boolean flag = AccessController.doPrivileged(
1010 (PrivilegedAction<Boolean>) () -> super.cancel(mayInterruptIfRunning),
1011 null,
1012 modifyThreadPerm);
1013
1014 // If cancel succeeded (according to the semantics of the Future cancel method),
1015 // then we need to make sure the State flag is set appropriately
1016 if (flag) {
1017 // If this method was called on the FX application thread, then we can
1018 // just update the state directly and this will make sure that after
1019 // the cancel method was called, the state will be set correctly
1020 // (otherwise it would be indeterminate). However if the cancel method was
1021 // called off the FX app thread, then we must use runLater, and the
1022 // state flag will not be readable immediately after this call. However,
1023 // that would be the case anyway since these properties are not thread-safe.
1024 if (isFxApplicationThread()) {
1025 setState(State.CANCELLED);
1026 } else {
1027 runLater(() -> setState(State.CANCELLED));
1028 }
1029 }
1030 // return the flag
1031 return flag;
1032 }
1033
|