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daa4106c | 1 | /* |
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2 | * Jexer - Java Text User Interface |
3 | * | |
e16dda65 | 4 | * The MIT License (MIT) |
00d2622b | 5 | * |
e16dda65 | 6 | * Copyright (C) 2016 Kevin Lamonte |
00d2622b | 7 | * |
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8 | * Permission is hereby granted, free of charge, to any person obtaining a |
9 | * copy of this software and associated documentation files (the "Software"), | |
10 | * to deal in the Software without restriction, including without limitation | |
11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
12 | * and/or sell copies of the Software, and to permit persons to whom the | |
13 | * Software is furnished to do so, subject to the following conditions: | |
00d2622b | 14 | * |
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15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
00d2622b | 17 | * |
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18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
24 | * DEALINGS IN THE SOFTWARE. | |
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25 | * |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
28 | */ | |
29 | package jexer; | |
30 | ||
31 | import jexer.bits.CellAttributes; | |
32 | import jexer.bits.GraphicsChars; | |
33 | import jexer.event.TKeypressEvent; | |
34 | import jexer.event.TMouseEvent; | |
35 | import static jexer.TKeypress.*; | |
36 | ||
37 | /** | |
38 | * TRadioButton implements a selectable radio button. | |
39 | */ | |
40 | public final class TRadioButton extends TWidget { | |
41 | ||
42 | /** | |
43 | * RadioButton state, true means selected. | |
44 | */ | |
45 | private boolean selected = false; | |
46 | ||
47 | /** | |
48 | * Get RadioButton state, true means selected. | |
49 | * | |
50 | * @return if true then this is the one button in the group that is | |
51 | * selected | |
52 | */ | |
7c870d89 | 53 | public boolean isSelected() { |
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54 | return selected; |
55 | } | |
56 | ||
57 | /** | |
58 | * Set RadioButton state, true means selected. Note package private | |
59 | * access. | |
60 | * | |
61 | * @param selected if true then this is the one button in the group that | |
62 | * is selected | |
63 | */ | |
64 | void setSelected(final boolean selected) { | |
65 | this.selected = selected; | |
66 | } | |
67 | ||
68 | /** | |
69 | * Label for this radio button. | |
70 | */ | |
71 | private String label; | |
72 | ||
73 | /** | |
74 | * ID for this radio button. Buttons start counting at 1 in the | |
75 | * RadioGroup. | |
76 | */ | |
77 | private int id; | |
78 | ||
79 | /** | |
80 | * Get ID for this radio button. Buttons start counting at 1 in the | |
81 | * RadioGroup. | |
82 | * | |
83 | * @return the ID | |
84 | */ | |
85 | public int getId() { | |
86 | return id; | |
87 | } | |
88 | ||
89 | /** | |
90 | * Public constructor. | |
91 | * | |
92 | * @param parent parent widget | |
93 | * @param x column relative to parent | |
94 | * @param y row relative to parent | |
95 | * @param label label to display next to (right of) the radiobutton | |
96 | * @param id ID for this radio button | |
97 | */ | |
98 | public TRadioButton(final TRadioGroup parent, final int x, final int y, | |
99 | final String label, final int id) { | |
100 | ||
101 | // Set parent and window | |
a83fea2b | 102 | super(parent, x, y, label.length() + 4, 1); |
00d2622b | 103 | |
00d2622b | 104 | this.label = label; |
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105 | this.id = id; |
106 | ||
7c870d89 | 107 | setCursorVisible(true); |
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108 | setCursorX(1); |
109 | } | |
110 | ||
111 | /** | |
112 | * Returns true if the mouse is currently on the radio button. | |
113 | * | |
114 | * @param mouse mouse event | |
115 | * @return if true the mouse is currently on the radio button | |
116 | */ | |
117 | private boolean mouseOnRadioButton(final TMouseEvent mouse) { | |
118 | if ((mouse.getY() == 0) | |
119 | && (mouse.getX() >= 0) | |
120 | && (mouse.getX() <= 2) | |
121 | ) { | |
122 | return true; | |
123 | } | |
124 | return false; | |
125 | } | |
126 | ||
127 | /** | |
128 | * Draw a radio button with label. | |
129 | */ | |
130 | @Override | |
131 | public void draw() { | |
132 | CellAttributes radioButtonColor; | |
133 | ||
7c870d89 | 134 | if (isAbsoluteActive()) { |
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135 | radioButtonColor = getTheme().getColor("tradiobutton.active"); |
136 | } else { | |
137 | radioButtonColor = getTheme().getColor("tradiobutton.inactive"); | |
138 | } | |
139 | ||
140 | getScreen().putCharXY(0, 0, '(', radioButtonColor); | |
141 | if (selected) { | |
142 | getScreen().putCharXY(1, 0, GraphicsChars.CP437[0x07], | |
143 | radioButtonColor); | |
144 | } else { | |
145 | getScreen().putCharXY(1, 0, ' ', radioButtonColor); | |
146 | } | |
147 | getScreen().putCharXY(2, 0, ')', radioButtonColor); | |
0d47c546 | 148 | getScreen().putStringXY(4, 0, label, radioButtonColor); |
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149 | } |
150 | ||
151 | /** | |
152 | * Handle mouse button presses. | |
153 | * | |
154 | * @param mouse mouse button press event | |
155 | */ | |
156 | @Override | |
157 | public void onMouseDown(final TMouseEvent mouse) { | |
7c870d89 | 158 | if ((mouseOnRadioButton(mouse)) && (mouse.isMouse1())) { |
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159 | // Switch state |
160 | selected = !selected; | |
161 | if (selected) { | |
162 | ((TRadioGroup) getParent()).setSelected(this); | |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | /** | |
168 | * Handle keystrokes. | |
169 | * | |
170 | * @param keypress keystroke event | |
171 | */ | |
172 | @Override | |
173 | public void onKeypress(final TKeypressEvent keypress) { | |
174 | ||
175 | if (keypress.equals(kbSpace)) { | |
176 | selected = !selected; | |
177 | if (selected) { | |
178 | ((TRadioGroup) getParent()).setSelected(this); | |
179 | } | |
180 | return; | |
181 | } | |
182 | ||
183 | // Pass to parent for the things we don't care about. | |
184 | super.onKeypress(keypress); | |
185 | } | |
186 | ||
187 | } |