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1
7
8 package javax.swing.plaf.synth;
9
10 import javax.swing.*;
11 import javax.swing.event.*;
12 import javax.swing.border.*;
13 import javax.swing.plaf.*;
14 import javax.swing.plaf.basic.*;
15
16 import java.beans.PropertyChangeListener  ;
17 import java.beans.PropertyChangeEvent ;
18
19 import java.awt.*;
20 import java.awt.event.*;
21 import sun.swing.plaf.synth.SynthUI;
22
23
24
30 class SynthScrollPaneUI extends BasicScrollPaneUI implements
31 PropertyChangeListener , SynthUI {
32 private SynthStyle style;
33
34 public static ComponentUI createUI(JComponent x) {
35 return new SynthScrollPaneUI ();
36 }
37
38 public void update(Graphics g, JComponent c) {
39 SynthContext context = getContext(c);
40
41 SynthLookAndFeel.update(context, g);
42 context.getPainter().paintScrollPaneBackground(context,
43 g, 0, 0, c.getWidth(), c.getHeight());
44 paint(context, g);
45 context.dispose();
46 }
47
48 public void paint(Graphics g, JComponent c) {
49 SynthContext context = getContext(c);
50
51 paint(context, g);
52 context.dispose();
53 }
54
55 protected void paint(SynthContext context, Graphics g) {
56 Border vpBorder = scrollpane.getViewportBorder();
57 if (vpBorder != null) {
58 Rectangle r = scrollpane.getViewportBorderBounds();
59 vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height);
60 }
61 }
62
63
64 public void paintBorder(SynthContext context, Graphics g, int x,
65 int y, int w, int h) {
66 context.getPainter().paintScrollPaneBorder(context, g, x, y, w, h);
67 }
68
69 protected void installDefaults(JScrollPane scrollpane) {
70 updateStyle(scrollpane);
71 }
72
73 private void updateStyle(JScrollPane c) {
74 SynthContext context = getContext(c, ENABLED);
75 SynthStyle oldStyle = style;
76
77 style = SynthLookAndFeel.updateStyle(context, this);
78 if (style != oldStyle) {
79 Border vpBorder = scrollpane.getViewportBorder();
80 if ((vpBorder == null) ||( vpBorder instanceof UIResource)) {
81 scrollpane.setViewportBorder(new ViewportBorder(context));
82 }
83 if (oldStyle != null) {
84 uninstallKeyboardActions(c);
85 installKeyboardActions(c);
86 }
87 }
88 context.dispose();
89 }
90
91
92 protected void installListeners(JScrollPane c) {
93 super.installListeners(c);
94 c.addPropertyChangeListener(this);
95 }
96
97 protected void uninstallDefaults(JScrollPane c) {
98 SynthContext context = getContext(c, ENABLED);
99
100 style.uninstallDefaults(context);
101 context.dispose();
102
103 if (scrollpane.getViewportBorder() instanceof UIResource) {
104 scrollpane.setViewportBorder(null);
105 }
106 }
107
108
109 protected void uninstallListeners(JComponent c) {
110 super.uninstallListeners(c);
111 c.removePropertyChangeListener(this);
112 }
113
114
115 public SynthContext getContext(JComponent c) {
116 return getContext(c, getComponentState(c));
117 }
118
119 private SynthContext getContext(JComponent c, int state) {
120 return SynthContext.getContext(SynthContext .class, c,
121 SynthLookAndFeel.getRegion(c), style, state);
122 }
123
124
125 private Region getRegion(JComponent c) {
126 return SynthLookAndFeel.getRegion(c);
127 }
128
129
130 private int getComponentState(JComponent c) {
131 return SynthLookAndFeel.getComponentState(c);
132 }
133
134 public void propertyChange(PropertyChangeEvent e) {
135 if (SynthLookAndFeel.shouldUpdateStyle(e)) {
136 updateStyle(scrollpane);
137 }
138 }
139
140
141
142 private class ViewportBorder extends AbstractBorder implements UIResource {
143 private Insets insets;
144
145 ViewportBorder(SynthContext context) {
146 this.insets = (Insets)context.getStyle().get(context,
147 "ScrollPane.viewportBorderInsets");
148 if (this.insets == null) {
149 this.insets = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
150 }
151 }
152
153 public void paintBorder(Component c, Graphics g, int x, int y,
154 int width, int height) {
155 JComponent jc = (JComponent)c;
156 SynthContext context = getContext(jc);
157 SynthStyle style = context.getStyle();
158 if (style == null) {
159 assert false: "SynthBorder is being used outside after the " +
160 " UI has been uninstalled";
161 return;
162 }
163 context.getPainter().paintViewportBorder(context, g, x, y, width,
164 height);
165 context.dispose();
166 }
167
168 public Insets getBorderInsets(Component c) {
169 return getBorderInsets(c, null);
170 }
171
172 public Insets getBorderInsets(Component c, Insets insets) {
173 if (insets == null) {
174 return new Insets(this.insets.top, this.insets.left,
175 this.insets.bottom, this.insets.right);
176 }
177 insets.top = this.insets.top;
178 insets.bottom = this.insets.bottom;
179 insets.left = this.insets.left;
180 insets.right = this.insets.left;
181 return insets;
182 }
183
184 public boolean isBorderOpaque() {
185 return false;
186 }
187 }
188 }
189 |
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