1/*
2 * Copyright (c) 2011, 2012, 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
26package com.apple.laf;
27
28import java.awt.*;
29import java.awt.event.*;
30import java.awt.geom.*;
31
32import javax.swing.*;
33import javax.swing.border.Border;
34import javax.swing.plaf.*;
35import javax.swing.text.*;
36
37import com.apple.laf.AquaUtils.RecyclableSingleton;
38import com.apple.laf.AquaUtils.RecyclableSingletonFromDefaultConstructor;
39
40public class AquaTextPasswordFieldUI extends AquaTextFieldUI {
41    private static final RecyclableSingleton<CapsLockSymbolPainter> capsLockPainter = new RecyclableSingletonFromDefaultConstructor<CapsLockSymbolPainter>(CapsLockSymbolPainter.class);
42    static CapsLockSymbolPainter getCapsLockPainter() {
43        return capsLockPainter.get();
44    }
45
46    public static ComponentUI createUI(final JComponent c) {
47        return new AquaTextPasswordFieldUI();
48    }
49
50    @Override
51    protected String getPropertyPrefix() {
52        return "PasswordField";
53    }
54
55    @Override
56    public View create(final Element elem) {
57        return new AquaPasswordView(elem);
58    }
59
60    @Override
61    protected void installListeners() {
62        super.installListeners();
63        getComponent().addKeyListener(getCapsLockPainter());
64    }
65
66    @Override
67    protected void uninstallListeners() {
68        getComponent().removeKeyListener(getCapsLockPainter());
69        super.uninstallListeners();
70    }
71
72    @Override
73    protected void paintBackgroundSafely(final Graphics g) {
74        super.paintBackgroundSafely(g);
75
76        final JTextComponent component = getComponent();
77        if (component == null) return;
78        if (!component.isFocusOwner()) return;
79
80        final boolean capsLockDown = Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK);
81        if (!capsLockDown) return;
82
83        final Rectangle bounds = component.getBounds();
84        getCapsLockPainter().paintBorder(component, g, bounds.x, bounds.y, bounds.width, bounds.height);
85    }
86
87    protected class AquaPasswordView extends PasswordView {
88        public AquaPasswordView(final Element elem) {
89            super(elem);
90            setupDefaultEchoCharacter();
91        }
92
93        protected void setupDefaultEchoCharacter() {
94            // this allows us to change the echo character in CoreAquaLookAndFeel.java
95            final Character echoChar = (Character)UIManager.getDefaults().get(getPropertyPrefix() + ".echoChar");
96            if (echoChar != null) {
97                LookAndFeel.installProperty(getComponent(), "echoChar", echoChar);
98            }
99        }
100    }
101
102    static class CapsLockSymbolPainter extends KeyAdapter implements Border, UIResource {
103        protected Shape capsLockShape;
104        protected Shape getCapsLockShape() {
105            if (capsLockShape != null) return capsLockShape;
106
107            final RoundRectangle2D rect = new RoundRectangle2D.Double(0.5, 0.5, 16, 16, 8, 8);
108            final GeneralPath shape = new GeneralPath(rect);
109            shape.setWindingRule(Path2D.WIND_EVEN_ODD);
110
111            // arrow
112            shape.moveTo( 8.50,  2.00);
113            shape.lineTo( 4.00,  7.00);
114            shape.lineTo( 6.25,  7.00);
115            shape.lineTo( 6.25, 10.25);
116            shape.lineTo(10.75, 10.25);
117            shape.lineTo(10.75,  7.00);
118            shape.lineTo(13.00,  7.00);
119            shape.lineTo( 8.50,  2.00);
120
121            // base line
122            shape.moveTo(10.75, 12.00);
123            shape.lineTo( 6.25, 12.00);
124            shape.lineTo( 6.25, 14.25);
125            shape.lineTo(10.75, 14.25);
126            shape.lineTo(10.75, 12.00);
127
128            return capsLockShape = shape;
129        }
130
131        @Override
132        public Insets getBorderInsets(final Component c) {
133            return new Insets(0, 0, 0, 0);
134        }
135
136        @Override
137        public boolean isBorderOpaque() {
138            return false;
139        }
140
141        @Override
142        public void paintBorder(final Component c, Graphics g, final int x, final int y, final int width, final int height) {
143            g = g.create(width - 23, height / 2 - 8, 18, 18);
144
145            g.setColor(UIManager.getColor("PasswordField.capsLockIconColor"));
146            ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
147            ((Graphics2D)g).fill(getCapsLockShape());
148            g.dispose();
149        }
150
151        @Override
152        public void keyPressed(final KeyEvent e) {
153            update(e);
154        }
155
156        @Override
157        public void keyReleased(final KeyEvent e) {
158            update(e);
159        }
160
161        void update(final KeyEvent e) {
162            if (KeyEvent.VK_CAPS_LOCK != e.getKeyCode()) return;
163            e.getComponent().repaint();
164        }
165    }
166}
167