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1 | /** |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * License: LGPLv3 or later | |
5 | * | |
6 | * This module is licensed under the GNU Lesser General Public License | |
7 | * Version 3. Please see the file "COPYING" in this directory for more | |
8 | * information about the GNU Lesser General Public License Version 3. | |
9 | * | |
10 | * Copyright (C) 2015 Kevin Lamonte | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public License | |
14 | * as published by the Free Software Foundation; either version 3 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this program; if not, see | |
24 | * http://www.gnu.org/licenses/, or write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
26 | * 02110-1301 USA | |
27 | * | |
28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
29 | * @version 1 | |
30 | */ | |
31 | package jexer.io; | |
32 | ||
33 | import java.util.List; | |
34 | import java.util.LinkedList; | |
35 | ||
36 | import jexer.TKeypress; | |
37 | import jexer.bits.Color; | |
38 | import jexer.event.TInputEvent; | |
39 | import jexer.event.TKeypressEvent; | |
40 | import jexer.event.TMouseEvent; | |
41 | import jexer.event.TResizeEvent; | |
42 | import jexer.session.SessionInfo; | |
43 | import jexer.session.TSessionInfo; | |
44 | import static jexer.TKeypress.*; | |
45 | ||
46 | /** | |
47 | * This class reads keystrokes and mouse events from an AWT Frame. | |
48 | */ | |
49 | public final class AWTTerminal { | |
50 | ||
51 | /** | |
52 | * The session information. | |
53 | */ | |
54 | private SessionInfo sessionInfo; | |
55 | ||
56 | /** | |
57 | * Getter for sessionInfo. | |
58 | * | |
59 | * @return the SessionInfo | |
60 | */ | |
61 | public SessionInfo getSessionInfo() { | |
62 | return sessionInfo; | |
63 | } | |
64 | ||
65 | /** | |
66 | * The event queue, filled up by a thread reading on input. | |
67 | */ | |
68 | private List<TInputEvent> eventQueue; | |
69 | ||
70 | /** | |
71 | * If true, we want the reader thread to exit gracefully. | |
72 | */ | |
73 | private boolean stopReaderThread; | |
74 | ||
75 | /** | |
76 | * The reader thread. | |
77 | */ | |
78 | private Thread readerThread; | |
79 | ||
80 | /** | |
81 | * true if mouse1 was down. Used to report mouse1 on the release event. | |
82 | */ | |
83 | private boolean mouse1; | |
84 | ||
85 | /** | |
86 | * true if mouse2 was down. Used to report mouse2 on the release event. | |
87 | */ | |
88 | private boolean mouse2; | |
89 | ||
90 | /** | |
91 | * true if mouse3 was down. Used to report mouse3 on the release event. | |
92 | */ | |
93 | private boolean mouse3; | |
94 | ||
95 | /** | |
96 | * Check if there are events in the queue. | |
97 | * | |
98 | * @return if true, getEvents() has something to return to the backend | |
99 | */ | |
100 | public boolean hasEvents() { | |
101 | synchronized (eventQueue) { | |
102 | return (eventQueue.size() > 0); | |
103 | } | |
104 | } | |
105 | ||
106 | /** | |
107 | * Constructor sets up state for getEvent(). | |
108 | * | |
109 | * @param screen the top-level AWT frame | |
110 | */ | |
111 | public AWTTerminal(final AWTScreen screen) { | |
112 | mouse1 = false; | |
113 | mouse2 = false; | |
114 | mouse3 = false; | |
115 | stopReaderThread = false; | |
116 | sessionInfo = new TSessionInfo(); | |
117 | eventQueue = new LinkedList<TInputEvent>(); | |
118 | } | |
119 | ||
120 | /** | |
121 | * Restore terminal to normal state. | |
122 | */ | |
123 | public void shutdown() { | |
124 | // System.err.println("=== shutdown() ==="); System.err.flush(); | |
125 | } | |
126 | ||
127 | /** | |
128 | * Return any events in the IO queue. | |
129 | * | |
130 | * @param queue list to append new events to | |
131 | */ | |
132 | public void getEvents(final List<TInputEvent> queue) { | |
133 | synchronized (eventQueue) { | |
134 | if (eventQueue.size() > 0) { | |
135 | synchronized (queue) { | |
136 | queue.addAll(eventQueue); | |
137 | } | |
138 | eventQueue.clear(); | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | /** | |
144 | * Return any events in the IO queue due to timeout. | |
145 | * | |
146 | * @param queue list to append new events to | |
147 | */ | |
148 | public void getIdleEvents(final List<TInputEvent> queue) { | |
149 | ||
150 | // Insert any polling action here... | |
151 | ||
152 | // Return any events that showed up | |
153 | synchronized (eventQueue) { | |
154 | if (eventQueue.size() > 0) { | |
155 | synchronized (queue) { | |
156 | queue.addAll(eventQueue); | |
157 | } | |
158 | eventQueue.clear(); | |
159 | } | |
160 | } | |
161 | } | |
162 | ||
163 | } |