/
MainPanel.java
100 lines (91 loc) · 3.86 KB
/
MainPanel.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
// -*- mode:java; encoding:utf-8 -*-
// vim:set fileencoding=utf-8:
// @homepage@
package example;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.util.Optional;
import javax.swing.*;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreePath;
public final class MainPanel extends JPanel {
private MainPanel() {
super(new GridLayout(2, 1));
JTree tree1 = new JTree() {
@Override public String getToolTipText(MouseEvent e) {
return Optional.ofNullable(getPathForLocation(e.getX(), e.getY()))
.map(TreePath::getLastPathComponent)
.map(txt -> "getToolTipText: " + txt)
.orElse(null);
}
};
ToolTipManager.sharedInstance().registerComponent(tree1);
JTree tree2 = new JTree() {
@Override public void updateUI() {
setCellRenderer(null);
super.updateUI();
// init();
TreeCellRenderer r = getCellRenderer();
setCellRenderer((tree, value, selected, expanded, leaf, row, hasFocus) -> {
Component c = r.getTreeCellRendererComponent(
tree, value, selected, expanded, leaf, row, hasFocus);
if (c instanceof JComponent) {
String txt = Optional.ofNullable(value)
.map(str -> "TreeCellRenderer: " + str)
.orElse(null);
((JComponent) c).setToolTipText(txt);
}
return c;
});
}
// private void init() {
// setLeafIcon(DefaultLookup.getIcon(this, ui, "Tree.leafIcon"));
// setClosedIcon(DefaultLookup.getIcon(this, ui, "Tree.closedIcon"));
// setOpenIcon(DefaultLookup.getIcon(this, ui, "Tree.openIcon"));
// setTextSelectionColor(DefaultLookup.getColor(this, ui, "Tree.selectionForeground"));
// setTextNonSelectionColor(DefaultLookup.getColor(this, ui, "Tree.textForeground"));
// setBackgroundSelectionColor(
// DefaultLookup.getColor(this, ui, "Tree.selectionBackground"));
// setBackgroundNonSelectionColor(DefaultLookup.getColor(this, ui, "Tree.textBackground"));
// setBorderSelectionColor(DefaultLookup.getColor(this, ui, "Tree.selectionBorderColor"));
// // ... = DefaultLookup.getBoolean(this, ui, "Tree.drawsFocusBorderAroundIcon", false);
// // ... = DefaultLookup.getBoolean(this, ui, "Tree.drawDashedFocusIndicator", false);
// // ... = DefaultLookup.getBoolean(this, ui, "Tree.rendererFillBackground", true);
// Insets i = DefaultLookup.getInsets(this, ui, "Tree.rendererMargins");
// if (i != null) {
// setBorder(BorderFactory.createEmptyBorder(i.top, i.left, i.bottom, i.right));
// }
// }
};
// tree2.setToolTipText(" ");
ToolTipManager.sharedInstance().registerComponent(tree2);
add(makeTitledPanel("Override getToolTipText", new JScrollPane(tree1)));
add(makeTitledPanel("Use TreeCellRenderer", new JScrollPane(tree2)));
setPreferredSize(new Dimension(320, 240));
}
private static Component makeTitledPanel(String title, Component c) {
JPanel p = new JPanel(new BorderLayout());
p.setBorder(BorderFactory.createTitledBorder(title));
p.add(c);
return p;
}
public static void main(String[] args) {
EventQueue.invokeLater(MainPanel::createAndShowGui);
}
private static void createAndShowGui() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (UnsupportedLookAndFeelException ignored) {
Toolkit.getDefaultToolkit().beep();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
return;
}
JFrame frame = new JFrame("@title@");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}