1 /*
2 * Copyright 2002-2003 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.swing.plaf.synth;
27
28 import javax.swing;
29 import javax.swing.event;
30 import javax.swing.border;
31 import javax.swing.plaf;
32 import javax.swing.plaf.basic;
33
34 import java.beans.PropertyChangeListener;
35 import java.beans.PropertyChangeEvent;
36
37 import java.awt;
38 import java.awt.event;
39 import sun.swing.plaf.synth.SynthUI;
40
41
42 /**
43 * Synth's ScrollPaneUI.
44 *
45 * @author Scott Violet
46 */
47 class SynthScrollPaneUI extends BasicScrollPaneUI implements
48 PropertyChangeListener, SynthUI {
49 private SynthStyle style;
50
51 public static ComponentUI createUI(JComponent x) {
52 return new SynthScrollPaneUI();
53 }
54
55 public void update(Graphics g, JComponent c) {
56 SynthContext context = getContext(c);
57
58 SynthLookAndFeel.update(context, g);
59 context.getPainter().paintScrollPaneBackground(context,
60 g, 0, 0, c.getWidth(), c.getHeight());
61 paint(context, g);
62 context.dispose();
63 }
64
65 public void paint(Graphics g, JComponent c) {
66 SynthContext context = getContext(c);
67
68 paint(context, g);
69 context.dispose();
70 }
71
72 protected void paint(SynthContext context, Graphics g) {
73 Border vpBorder = scrollpane.getViewportBorder();
74 if (vpBorder != null) {
75 Rectangle r = scrollpane.getViewportBorderBounds();
76 vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height);
77 }
78 }
79
80
81 public void paintBorder(SynthContext context, Graphics g, int x,
82 int y, int w, int h) {
83 context.getPainter().paintScrollPaneBorder(context, g, x, y, w, h);
84 }
85
86 protected void installDefaults(JScrollPane scrollpane) {
87 updateStyle(scrollpane);
88 }
89
90 private void updateStyle(JScrollPane c) {
91 SynthContext context = getContext(c, ENABLED);
92 SynthStyle oldStyle = style;
93
94 style = SynthLookAndFeel.updateStyle(context, this);
95 if (style != oldStyle) {
96 Border vpBorder = scrollpane.getViewportBorder();
97 if ((vpBorder == null) ||( vpBorder instanceof UIResource)) {
98 scrollpane.setViewportBorder(new ViewportBorder(context));
99 }
100 if (oldStyle != null) {
101 uninstallKeyboardActions(c);
102 installKeyboardActions(c);
103 }
104 }
105 context.dispose();
106 }
107
108
109 protected void installListeners(JScrollPane c) {
110 super.installListeners(c);
111 c.addPropertyChangeListener(this);
112 }
113
114 protected void uninstallDefaults(JScrollPane c) {
115 SynthContext context = getContext(c, ENABLED);
116
117 style.uninstallDefaults(context);
118 context.dispose();
119
120 if (scrollpane.getViewportBorder() instanceof UIResource) {
121 scrollpane.setViewportBorder(null);
122 }
123 }
124
125
126 protected void uninstallListeners(JComponent c) {
127 super.uninstallListeners(c);
128 c.removePropertyChangeListener(this);
129 }
130
131
132 public SynthContext getContext(JComponent c) {
133 return getContext(c, getComponentState(c));
134 }
135
136 private SynthContext getContext(JComponent c, int state) {
137 return SynthContext.getContext(SynthContext.class, c,
138 SynthLookAndFeel.getRegion(c), style, state);
139 }
140
141
142 private Region getRegion(JComponent c) {
143 return SynthLookAndFeel.getRegion(c);
144 }
145
146
147 private int getComponentState(JComponent c) {
148 return SynthLookAndFeel.getComponentState(c);
149 }
150
151 public void propertyChange(PropertyChangeEvent e) {
152 if (SynthLookAndFeel.shouldUpdateStyle(e)) {
153 updateStyle(scrollpane);
154 }
155 }
156
157
158
159 private class ViewportBorder extends AbstractBorder implements UIResource {
160 private Insets insets;
161
162 ViewportBorder(SynthContext context) {
163 this.insets = (Insets)context.getStyle().get(context,
164 "ScrollPane.viewportBorderInsets");
165 if (this.insets == null) {
166 this.insets = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
167 }
168 }
169
170 public void paintBorder(Component c, Graphics g, int x, int y,
171 int width, int height) {
172 JComponent jc = (JComponent)c;
173 SynthContext context = getContext(jc);
174 SynthStyle style = context.getStyle();
175 if (style == null) {
176 assert false: "SynthBorder is being used outside after the " +
177 " UI has been uninstalled";
178 return;
179 }
180 context.getPainter().paintViewportBorder(context, g, x, y, width,
181 height);
182 context.dispose();
183 }
184
185 public Insets getBorderInsets(Component c, Insets insets) {
186 if (insets == null) {
187 return new Insets(this.insets.top, this.insets.left,
188 this.insets.bottom, this.insets.right);
189 }
190 insets.top = this.insets.top;
191 insets.bottom = this.insets.bottom;
192 insets.left = this.insets.left;
193 insets.right = this.insets.left;
194 return insets;
195 }
196
197 public boolean isBorderOpaque() {
198 return false;
199 }
200 }
201 }
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