1 /*
2 * Copyright (c) 2010, 2015, 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 javafx.scene.control.skin;
27
28 import com.sun.javafx.scene.NodeHelper;
29 import com.sun.javafx.scene.control.behavior.BehaviorBase;
30 import com.sun.javafx.scene.control.skin.Utils;
31 import javafx.scene.Node;
32 import javafx.scene.Scene;
33 import javafx.scene.control.Button;
34 import javafx.scene.control.ContextMenu;
35 import com.sun.javafx.scene.control.behavior.ButtonBehavior;
36 import javafx.scene.control.Control;
37 import javafx.scene.input.KeyCode;
38 import javafx.scene.input.KeyCodeCombination;
39
40 /**
41 * Default skin implementation for the {@link Button} control.
42 *
43 * @see Button
44 * @since 9
45 */
46 public class ButtonSkin extends LabeledSkinBase<Button> {
47
48 /***************************************************************************
49 * *
50 * Private fields *
51 * *
52 **************************************************************************/
53
54 private KeyCodeCombination defaultAcceleratorKeyCodeCombination;
55 private KeyCodeCombination cancelAcceleratorKeyCodeCombination;
56 private final BehaviorBase<Button> behavior;
57
58
59
60 /***************************************************************************
61 * *
62 * Listeners *
63 * *
64 **************************************************************************/
65
66 Runnable defaultButtonRunnable = () -> {
67 if (getSkinnable().getScene() != null && NodeHelper.isTreeVisible(getSkinnable()) && !getSkinnable().isDisabled()) {
68 getSkinnable().fire();
69 }
70 };
71
72 Runnable cancelButtonRunnable = () -> {
73 if (getSkinnable().getScene() != null && NodeHelper.isTreeVisible(getSkinnable()) && !getSkinnable().isDisabled()) {
74 getSkinnable().fire();
75 }
76 };
77
78
79
80 /***************************************************************************
81 * *
82 * Constructors *
83 * *
84 **************************************************************************/
85
86 /**
87 * Creates a new ButtonSkin instance, installing the necessary child
88 * nodes into the Control {@link Control#getChildren() children} list, as
89 * well as the necessary input mappings for handling key, mouse, etc events.
90 *
91 * @param control The control that this skin should be installed onto.
92 */
93 public ButtonSkin(Button control) {
94 super(control);
95
96 // install default input map for the Button control
97 behavior = new ButtonBehavior<>(control);
98 // control.setInputMap(behavior.getInputMap());
99
100 // Register listeners
101 registerChangeListener(control.defaultButtonProperty(), o -> setDefaultButton(getSkinnable().isDefaultButton()));
102 registerChangeListener(control.cancelButtonProperty(), o -> setCancelButton(getSkinnable().isCancelButton()));
103 registerChangeListener(control.focusedProperty(), o -> {
104 if (!getSkinnable().isFocused()) {
105 ContextMenu cm = getSkinnable().getContextMenu();
106 if (cm != null) {
107 if (cm.isShowing()) {
108 cm.hide();
109 Utils.removeMnemonics(cm, getSkinnable().getScene());
110 }
111 }
112 }
113 });
114 registerChangeListener(control.parentProperty(), o -> {
115 if (getSkinnable().getParent() == null && getSkinnable().getScene() != null) {
116 if (getSkinnable().isDefaultButton()) {
117 getSkinnable().getScene().getAccelerators().remove(defaultAcceleratorKeyCodeCombination);
118 }
119 if (getSkinnable().isCancelButton()) {
120 getSkinnable().getScene().getAccelerators().remove(cancelAcceleratorKeyCodeCombination);
121 }
122 }
123 });
124
125 // set visuals
126 if (getSkinnable().isDefaultButton()) {
127 /*
128 ** were we already the defaultButton, before the listener was added?
129 ** don't laugh, it can happen....
130 */
131 setDefaultButton(true);
132 }
133
134 if (getSkinnable().isCancelButton()) {
135 /*
136 ** were we already the defaultButton, before the listener was added?
137 ** don't laugh, it can happen....
138 */
139 setCancelButton(true);
140 }
141 }
142
143
144
145 /***************************************************************************
146 * *
147 * Public API *
148 * *
149 **************************************************************************/
150
151 /** {@inheritDoc} */
152 @Override public void dispose() {
153 super.dispose();
154
155 if (behavior != null) {
156 behavior.dispose();
157 }
158 }
159
160
161
162 /***************************************************************************
163 * *
164 * Private implementation *
165 * *
166 **************************************************************************/
167
168 private void setDefaultButton(boolean value) {
169 Scene scene = getSkinnable().getScene();
170 if (scene != null) {
171 KeyCode acceleratorCode = KeyCode.ENTER;
172 defaultAcceleratorKeyCodeCombination = new KeyCodeCombination(acceleratorCode);
173
174 Runnable oldDefault = scene.getAccelerators().get(defaultAcceleratorKeyCodeCombination);
175 if (!value) {
176 /**
177 * first check of there's a default button already
178 */
179 if (defaultButtonRunnable.equals(oldDefault)) {
180 /**
181 * is it us?
182 */
183 scene.getAccelerators().remove(defaultAcceleratorKeyCodeCombination);
184 }
185 }
186 else {
187 if (!defaultButtonRunnable.equals(oldDefault)) {
188 scene.getAccelerators().remove(defaultAcceleratorKeyCodeCombination);
189 scene.getAccelerators().put(defaultAcceleratorKeyCodeCombination, defaultButtonRunnable);
190 }
191 }
192 }
193 }
194
195 private void setCancelButton(boolean value) {
196 Scene scene = getSkinnable().getScene();
197 if (scene != null) {
198 KeyCode acceleratorCode = KeyCode.ESCAPE;
199 cancelAcceleratorKeyCodeCombination = new KeyCodeCombination(acceleratorCode);
200
201 Runnable oldCancel = scene.getAccelerators().get(cancelAcceleratorKeyCodeCombination);
202 if (!value) {
203 /**
204 * first check of there's a cancel button already
205 */
206 if (cancelButtonRunnable.equals(oldCancel)) {
207 /**
208 * is it us?
209 */
210 scene.getAccelerators().remove(cancelAcceleratorKeyCodeCombination);
211 }
212 }
213 else {
214 if (!cancelButtonRunnable.equals(oldCancel)) {
215 scene.getAccelerators().remove(cancelAcceleratorKeyCodeCombination);
216 scene.getAccelerators().put(cancelAcceleratorKeyCodeCombination, cancelButtonRunnable);
217 }
218 }
219 }
220 }
221 }