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1
30 package com.genimen.djeneric.ui;
31
32 import java.awt.Component  ;
33 import java.awt.Graphics ;
34 import java.awt.event.MouseAdapter ;
35 import java.awt.event.MouseEvent ;
36 import java.net.URL ;
37
38 import javax.swing.Icon ;
39 import javax.swing.ImageIcon ;
40 import javax.swing.JTabbedPane ;
41
42 public class DjTabbedPane extends JTabbedPane
43 {
44 private static final long serialVersionUID = 1L;
45 protected ImageIcon _closingIcon;
46
47 public DjTabbedPane()
48 {
49 this(getImageIcon("close.gif"));
50 }
51
52 public DjTabbedPane(ImageIcon closingIcon)
53 {
54 this._closingIcon = closingIcon;
55
56 addMouseListener(new ClosingListener());
57 }
58
59 public void addTab(String title, ImageIcon icon, Component component, String tip)
60 {
61 if (component instanceof DjCloseable) super.addTab(title, new ClosingIcon(_closingIcon, icon), component, tip);
62 else super.addTab(title, icon, component, tip);
63 }
64
65 public void addTab(String title, ImageIcon icon, Component component)
66 {
67 addTab(title, icon, component, null);
68 }
69
70 public void addTab(String title, Component component)
71 {
72 addTab(title, null, component, null);
73 }
74
75 public static ImageIcon getImageIcon(String fileName)
76 {
77 URL url = DjTabbedPane.class.getResource("images/" + fileName);
78 if (url != null)
79 {
80 return new ImageIcon (url);
81 }
82 else return null;
83 }
84
85 protected class ClosingListener extends MouseAdapter
86 {
87
88 public void mouseReleased(MouseEvent e)
89 {
90 int i = getSelectedIndex();
91
92 if (i == -1) return;
93
94 if (getIconAt(i) instanceof ClosingIcon)
95 {
96 ClosingIcon icon = (ClosingIcon) getIconAt(i);
97
98 if (icon != null && icon.contains(e.getX(), e.getY()))
99 {
100 Component c = getComponentAt(i);
101
102 if (c instanceof DjCloseable)
103 {
104 DjCloseable closeable = (DjCloseable) c;
105 if (closeable.canClose()) closeable.close();
106 }
107 }
108 }
109 }
110
111 }
112
113 protected class ClosingIcon implements Icon
114 {
115 private Icon _closeIcon;
116 private Icon _icon;
117 private int _x = 0;
118 private int _y = 0;
119 private int _height = 10;
120 private int _width = 10;
121 private int _combinedWidth = 10;
122
123 public ClosingIcon(ImageIcon closeIcon, ImageIcon icon)
124 {
125 _closeIcon = closeIcon;
126 _icon = icon;
127
128 if (closeIcon != null)
129 {
130 _height = closeIcon.getIconHeight();
131 _width = closeIcon.getIconWidth();
132 _combinedWidth = _width;
133 }
134 if (icon != null)
135 {
136 _combinedWidth += 2 + icon.getIconWidth();
137 _height = Math.max(_height, icon.getIconHeight());
138 }
139 }
140
141 public int getIconHeight()
142 {
143 return _height;
144 }
145
146 public int getIconWidth()
147 {
148 return _combinedWidth;
149 }
150
151 public void paintIcon(Component c, Graphics g, int x, int y)
152 {
153 _x = x;
154 _y = y;
155
156 if (_closeIcon != null)
157 {
158 _closeIcon.paintIcon(c, g, x, y + 1);
159 if (_icon != null) _icon.paintIcon(c, g, x + _closeIcon.getIconWidth() + 2, y + 1);
160 }
161 else
162 {
163 System.err.println("DjTabbedPane: no icon");
164 g.drawRect(x, y + 1, _width, _height);
165 }
166 }
167
168 public boolean contains(int xEvent, int yEvent)
169 {
170 if (!(xEvent >= _x) || !(xEvent <= _x + _width))
171 {
172 return false;
173 }
174 if (!(yEvent >= _y) || !(yEvent <= _y + _height))
175 {
176 return false;
177 }
178
179 return true;
180 }
181 }
182 } |
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