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 com.sun.javafx.binding;
27
28 import java.util.function.Predicate;
29 import javafx.beans.WeakListener;
30
31 public class ExpressionHelperBase {
32
33 protected static int trim(int size, Object[] listeners) {
34 Predicate<Object> p = t -> t instanceof WeakListener &&
35 ((WeakListener)t).wasGarbageCollected();
36 int index = 0;
37 for (; index < size; index++) {
38 if (p.test(listeners[index])) {
39 break;
40 }
41 }
42 if (index < size) {
43 for (int src = index + 1; src < size; src++) {
44 if (!p.test(listeners[src])) {
45 listeners[index++] = listeners[src];
46 }
47 }
48 int oldSize = size;
49 size = index;
50 for (; index < oldSize; index++) {
51 listeners[index] = null;
52 }
53 }
54
55 return size;
56 }
57
58 }
|
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 com.sun.javafx.binding;
27
28 import java.util.Map;
29 import java.util.function.Predicate;
30
31 import javafx.beans.WeakListener;
32
33 public class ExpressionHelperBase {
34
35 protected static int trim(int size, Object[] listeners) {
36 Predicate<Object> p = t -> t instanceof WeakListener &&
37 ((WeakListener)t).wasGarbageCollected();
38 int index = 0;
39 for (; index < size; index++) {
40 if (p.test(listeners[index])) {
41 break;
42 }
43 }
44 if (index < size) {
45 for (int src = index + 1; src < size; src++) {
46 if (!p.test(listeners[src])) {
47 listeners[index++] = listeners[src];
48 }
49 }
50 int oldSize = size;
51 size = index;
52 for (; index < oldSize; index++) {
53 listeners[index] = null;
54 }
55 }
56
57 return size;
58 }
59
60 protected static void removeWeakListeners(final Map<?, Integer> listeners) {
61 Predicate<Object> p = t -> t instanceof WeakListener &&
62 ((WeakListener)t).wasGarbageCollected();
63
64 listeners.entrySet().removeIf(e -> p.test(e.getKey()));
65 }
66
67 }
|