7 * published by the Free Software Foundation. Oracle designates this
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 package com.sun.glass.ui;
26
27 /**
28 * A high-resolution timer.
29 *
30 * An application may either override its run() method, or pass a Runnable
31 * object to the constructor of the Timer class.
32 * <p>
33 * The run() method may be invoked on a thread other than the UI thread. If
34 * a developer wants to process timer events on the UI thread, they can use
35 * the Application.invokeLater/invokeAndWait() API.
36 */
37 public abstract class Timer {
38
39 private final static double UNSET_PERIOD = -1.0; // 0 is valid value, so can't use it here
40 private final static double SET_PERIOD = -2.0; // token value for vsync timer
41
42 private final Runnable runnable;
43 private long ptr;
44 private double period = UNSET_PERIOD;
45
46 protected abstract long _start(Runnable runnable);
47 protected abstract long _start(Runnable runnable, int period);
48 protected abstract void _stop(long timer);
49
50 /**
51 * Constructs a new timer.
52 *
53 * If the application overrides the Timer.run(), it should call super.run()
54 * in order to run the runnable passed to the constructor.
55 */
56 protected Timer(Runnable runnable) {
57 if (runnable == null) {
58 throw new IllegalArgumentException("runnable shouldn't be null");
59 }
60 this.runnable = runnable;
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7 * published by the Free Software Foundation. Oracle designates this
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 package com.sun.glass.ui;
26
27 import java.lang.annotation.Native;
28
29 /**
30 * A high-resolution timer.
31 *
32 * An application may either override its run() method, or pass a Runnable
33 * object to the constructor of the Timer class.
34 * <p>
35 * The run() method may be invoked on a thread other than the UI thread. If
36 * a developer wants to process timer events on the UI thread, they can use
37 * the Application.invokeLater/invokeAndWait() API.
38 */
39 public abstract class Timer {
40
41 @Native private final static double UNSET_PERIOD = -1.0; // 0 is valid value, so can't use it here
42 @Native private final static double SET_PERIOD = -2.0; // token value for vsync timer
43
44 private final Runnable runnable;
45 private long ptr;
46 private double period = UNSET_PERIOD;
47
48 protected abstract long _start(Runnable runnable);
49 protected abstract long _start(Runnable runnable, int period);
50 protected abstract void _stop(long timer);
51
52 /**
53 * Constructs a new timer.
54 *
55 * If the application overrides the Timer.run(), it should call super.run()
56 * in order to run the runnable passed to the constructor.
57 */
58 protected Timer(Runnable runnable) {
59 if (runnable == null) {
60 throw new IllegalArgumentException("runnable shouldn't be null");
61 }
62 this.runnable = runnable;
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