1 /*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
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
26 package com.sun.glass.ui.monocle.linux;
27
28 import com.sun.glass.ui.monocle.input.InputDeviceRegistry;
29
30 import java.io.File;
31 import java.io.IOException;
32 import java.security.AllPermission;
33 import java.util.BitSet;
34 import java.util.HashMap;
35 import java.util.Map;
36
37 public class LinuxInputDeviceRegistry extends InputDeviceRegistry {
38
39 public LinuxInputDeviceRegistry(boolean headless) {
40 if (headless) {
41 // Keep the registry but do not bind it to udev.
42 return;
43 }
44 Map<File, LinuxInputDevice> deviceMap = new HashMap<>();
45 UdevListener udevListener = new UdevListener() {
46 @Override
47 public void udevEvent(String action, Map<String, String> event) {
48 String subsystem = event.get("SUBSYSTEM");
49 String devPath = event.get("DEVPATH");
50 String devName = event.get("DEVNAME");
51 if (subsystem != null && subsystem.equals("input")
52 && devPath != null && devName != null) {
53 try {
54 File sysPath = new File("/sys", devPath);
55 if (action.equals("add")
56 || (action.equals("change")
57 && !deviceMap.containsKey(sysPath))) {
58 File devNode = new File(devName);
59 LinuxInputDevice device = createDevice(
60 devNode, sysPath, event);
61 if (device != null) {
62 deviceMap.put(sysPath, device);
63 }
64 } else if (action.equals("remove")) {
65 LinuxInputDevice device = deviceMap.get(sysPath);
66 deviceMap.remove(sysPath);
67 if (device != null) {
68 devices.remove(device);
69 }
70 }
71 } catch (IOException e) {
72 e.printStackTrace();
73 }
74 }
75 }
76 };
77 Udev.getInstance().addListener(udevListener);
78 // Request updates for existing devices
79 SysFS.triggerUdevNotification("input");
80 }
81
82 private LinuxInputDevice createDevice(File devNode,
83 File sysPath,
84 Map<String, String> udevManifest)
85 throws IOException {
86 LinuxInputDevice device = new LinuxInputDevice(
87 devNode, sysPath, udevManifest);
88 return addDeviceInternal(device, "Linux input: " + devNode.toString());
89 }
90
91 public LinuxInputDevice addDevice(LinuxInputDevice device, String name) {
92 SecurityManager security = System.getSecurityManager();
93 if (security != null) {
94 security.checkPermission(new AllPermission());
95 }
96 return addDeviceInternal(device, name);
97 }
98
99 private LinuxInputDevice addDeviceInternal(LinuxInputDevice device, String name) {
100 LinuxInputProcessor processor = createInputProcessor(device);
101 if (processor == null) {
102 return null;
103 } else {
104 device.setInputProcessor(createInputProcessor(device));
105 Thread thread = new Thread(device);
106 thread.setName(name);
107 thread.setDaemon(true);
108 thread.start();
109 devices.add(device);
110 return device;
111 }
112 }
113
114 public void removeDevice(LinuxInputDevice device) {
115 SecurityManager security = System.getSecurityManager();
116 if (security != null) {
117 security.checkPermission(new AllPermission());
118 }
119 devices.remove(device);
120 }
121
122 private LinuxInputProcessor createInputProcessor(LinuxInputDevice device) {
123 if (device.isTouch()) {
124 BitSet absCaps = device.getCapability("abs");
125 boolean isMT = absCaps.get(Input.ABS_MT_POSITION_X)
126 && absCaps.get(Input.ABS_MT_POSITION_Y);
127 if (isMT) {
128 if (absCaps.get(Input.ABS_MT_TRACKING_ID)) {
129 return new LinuxStatefulMultiTouchProcessor(device);
130 } else {
131 return new LinuxStatelessMultiTouchProcessor(device);
132 }
133 } else {
134 return new LinuxSimpleTouchProcessor(device);
135 }
136 } else if (device.isRelative()) {
137 return new LinuxMouseProcessor();
138 } else {
139 BitSet keyCaps = device.getCapability("key");
140 if (keyCaps != null && !keyCaps.isEmpty()) {
141 return new LinuxKeyProcessor();
142 } else {
143 return null;
144 }
145 }
146 }
147
148 }