01 /*
02 * Copyright 2008-2015 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.griffon.runtime.lanterna;
17
18 import com.googlecode.lanterna.gui.Action;
19 import com.googlecode.lanterna.gui.GUIScreen;
20 import org.codehaus.griffon.runtime.core.threading.AbstractUIThreadManager;
21
22 import javax.annotation.Nonnull;
23 import javax.inject.Inject;
24
25 /**
26 * Executes code honoring Lanterna's threading model.
27 *
28 * @author Andres Almiray
29 * @since 2.0.0
30 */
31 public class LanternaUIThreadManager extends AbstractUIThreadManager {
32 private final GUIScreen screen;
33
34 @Inject
35 public LanternaUIThreadManager(@Nonnull GUIScreen screen) {
36 this.screen = screen;
37 }
38
39 public boolean isUIThread() {
40 return screen.isInEventThread();
41 }
42
43 @Override
44 public void runInsideUIAsync(@Nonnull Runnable runnable) {
45 runInsideUISync(runnable);
46 }
47
48 @Override
49 public void runInsideUISync(final @Nonnull Runnable runnable) {
50 if (isUIThread()) {
51 runnable.run();
52 } else {
53 screen.runInEventThread(new Action() {
54 public void doAction() {
55 runnable.run();
56 }
57 });
58 }
59 }
60 }
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