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 java.awt;
27
28 import java.util.LinkedList;
29 import sun.awt.AppContext;
30 import sun.awt.SunToolkit;
31
32 /**
33 * A mechanism for ensuring that a series of AWTEvents are executed in a
34 * precise order, even across multiple AppContexts. The nested events will be
35 * dispatched in the order in which their wrapping SequencedEvents were
36 * constructed. The only exception to this rule is if the peer of the target of
37 * the nested event was destroyed (with a call to Component.removeNotify)
38 * before the wrapping SequencedEvent was able to be dispatched. In this case,
39 * the nested event is never dispatched.
40 *
41 * @author David Mendenhall
42 */
43 class SequencedEvent extends AWTEvent implements ActiveEvent {
44 /*
45 * serialVersionUID
46 */
47 private static final long serialVersionUID = 547742659238625067L;
48
49 private static final int ID =
50 java.awt.event.FocusEvent.FOCUS_LAST + 1;
51 private static final LinkedList list = new LinkedList();
52
53 private final AWTEvent nested;
54 private AppContext appContext;
55 private boolean disposed;
56
57 /**
58 * Constructs a new SequencedEvent which will dispatch the specified
59 * nested event.
60 *
61 * @param nested the AWTEvent which this SequencedEvent's dispatch()
62 * method will dispatch
63 */
64 public SequencedEvent(AWTEvent nested) {
65 super(nested.getSource(), ID);
66 this.nested = nested;
67 // All AWTEvents that are wrapped in SequencedEvents are (at
68 // least currently) implicitly generated by the system
69 SunToolkit.setSystemGenerated(nested);
70 synchronized (SequencedEvent.class) {
71 list.add(this);
72 }
73 }
74
75 /**
76 * Dispatches the nested event after all previous nested events have been
|
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 java.awt;
27
28 import java.util.LinkedList;
29 import sun.awt.AWTAccessor;
30 import sun.awt.AppContext;
31 import sun.awt.SunToolkit;
32
33 /**
34 * A mechanism for ensuring that a series of AWTEvents are executed in a
35 * precise order, even across multiple AppContexts. The nested events will be
36 * dispatched in the order in which their wrapping SequencedEvents were
37 * constructed. The only exception to this rule is if the peer of the target of
38 * the nested event was destroyed (with a call to Component.removeNotify)
39 * before the wrapping SequencedEvent was able to be dispatched. In this case,
40 * the nested event is never dispatched.
41 *
42 * @author David Mendenhall
43 */
44 class SequencedEvent extends AWTEvent implements ActiveEvent {
45 /*
46 * serialVersionUID
47 */
48 private static final long serialVersionUID = 547742659238625067L;
49
50 private static final int ID =
51 java.awt.event.FocusEvent.FOCUS_LAST + 1;
52 private static final LinkedList list = new LinkedList();
53
54 private final AWTEvent nested;
55 private AppContext appContext;
56 private boolean disposed;
57
58 static {
59 AWTAccessor.setSequencedEventAccessor(new AWTAccessor.SequencedEventAccessor() {
60 public AWTEvent getNested(AWTEvent sequencedEvent) {
61 return ((SequencedEvent)sequencedEvent).nested;
62 }
63 public boolean isSequencedEvent(AWTEvent event) {
64 return event instanceof SequencedEvent;
65 }
66 });
67 }
68
69 /**
70 * Constructs a new SequencedEvent which will dispatch the specified
71 * nested event.
72 *
73 * @param nested the AWTEvent which this SequencedEvent's dispatch()
74 * method will dispatch
75 */
76 public SequencedEvent(AWTEvent nested) {
77 super(nested.getSource(), ID);
78 this.nested = nested;
79 // All AWTEvents that are wrapped in SequencedEvents are (at
80 // least currently) implicitly generated by the system
81 SunToolkit.setSystemGenerated(nested);
82 synchronized (SequencedEvent.class) {
83 list.add(this);
84 }
85 }
86
87 /**
88 * Dispatches the nested event after all previous nested events have been
|