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[fanfix.git] / src / jexer / backend / AWTBackend.java
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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 */
31package jexer.backend;
32
33import java.util.List;
34
35import jexer.event.TInputEvent;
36import jexer.io.AWTScreen;
37import jexer.io.AWTTerminal;
38
39/**
40 * This class uses standard AWT calls to handle screen, keyboard, and mouse
41 * I/O.
42 */
43public final class AWTBackend extends Backend {
44
45 /**
46 * Input events are processed by this Terminal.
47 */
48 private AWTTerminal terminal;
49
50 /**
51 * Public constructor.
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52 *
53 * @param listener the object this backend needs to wake up when new
54 * input comes in
1ac2ccb1 55 */
92554d64 56 public AWTBackend(final Object listener) {
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57 // Create a screen
58 AWTScreen screen = new AWTScreen();
59 this.screen = screen;
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60
61 // Create the AWT event listeners
62 terminal = new AWTTerminal(listener, screen);
63
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64 // Hang onto the session info
65 this.sessionInfo = terminal.getSessionInfo();
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66 }
67
68 /**
69 * Sync the logical screen to the physical device.
70 */
71 @Override
72 public void flushScreen() {
73 screen.flushPhysical();
74 }
75
76 /**
77 * Get keyboard, mouse, and screen resize events.
78 *
79 * @param queue list to append new events to
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80 */
81 @Override
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82 public void getEvents(final List<TInputEvent> queue) {
83 if (terminal.hasEvents()) {
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84 terminal.getEvents(queue);
85 }
86 }
87
88 /**
89 * Close the I/O, restore the console, etc.
90 */
91 @Override
92 public void shutdown() {
93 terminal.shutdown();
94 }
95
96}