1 /**
2 * This file Copyright (c) 2014-2015 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.ui.framework.task;
35
36 import info.magnolia.cms.security.User;
37 import info.magnolia.context.Context;
38 import info.magnolia.context.MgnlContext;
39 import info.magnolia.context.SimpleContext;
40 import info.magnolia.context.SystemContext;
41 import info.magnolia.event.EventBus;
42 import info.magnolia.objectfactory.ComponentProvider;
43 import info.magnolia.task.event.TaskEvent;
44 import info.magnolia.ui.api.event.AdmincentralEventBus;
45
46 import java.util.Locale;
47
48 import javax.inject.Inject;
49 import javax.inject.Named;
50
51 import com.vaadin.server.VaadinSession;
52
53 /**
54 * Dispatches Task events on an {@link EventBus} for a certain user.
55 */
56 public class LocalTaskDispatcher implements TaskEventDispatcher {
57
58 private final User user;
59 private final Locale locale;
60 private EventBus eventBus;
61 private VaadinSession vaadinSession;
62 private ComponentProvider componentProvider;
63
64 @Inject
65 public LocalTaskDispatcher(@Named(AdmincentralEventBus.NAME) final EventBus eventBus, VaadinSession vaadinSession, Context context, ComponentProvider componentProvider) {
66 this.eventBus = eventBus;
67 this.vaadinSession = vaadinSession;
68 this.componentProvider = componentProvider;
69 this.user = context.getUser();
70 this.locale = context.getLocale();
71 }
72
73 @Override
74 public void onTaskEvent(final TaskEvent taskEvent) {
75 vaadinSession.access(new Runnable() {
76 @Override
77 public void run() {
78 boolean hasContext = MgnlContext.hasInstance();
79 if (!hasContext) {
80 MgnlContext.setInstance(new SimpleContext(componentProvider.getComponent(SystemContext.class)) {
81 @Override
82 public User getUser() {
83 return LocalTaskDispatcher.this.user;
84 }
85
86 @Override
87 public Locale getLocale() {
88 return LocalTaskDispatcher.this.locale;
89 }
90 });
91 }
92 try {
93 eventBus.fireEvent(taskEvent);
94 } catch (Exception ignore) {
95 } finally {
96 if (!hasContext) {
97 MgnlContext.setInstance(null);
98 }
99 }
100 }
101 });
102 }
103 }