| 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 | } |