Skip to content

Commit 615dce2

Browse files
tips4javatips4java
authored
Add files via upload
1 parent 695177c commit 615dce2

File tree

1 file changed

+128
-0
lines changed

1 file changed

+128
-0
lines changed

‎source/BoundsPopupMenuListenerDemo.java‎

Lines changed: 128 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,128 @@
1+
import java.awt.*;
2+
import java.awt.event.*;
3+
import javax.swing.*;
4+
import javax.swing.border.*;
5+
import javax.swing.event.*;
6+
import javax.swing.UIManager.*;
7+
8+
public class BoundsPopupMenuListenerDemo extends JPanel
9+
implements ChangeListener, ItemListener
10+
{
11+
private BoundsPopupMenuListener listener;
12+
private JCheckBox scrollBarRequired;
13+
private JCheckBox popupWider;
14+
private JSpinner maximumWidth;
15+
private JCheckBox popupAbove;
16+
private JComboBox<String> comboBox;
17+
18+
BoundsPopupMenuListenerDemo()
19+
{
20+
setLayout( new BorderLayout(10, 10) );
21+
setBorder( new EmptyBorder(20, 20, 20, 20) );
22+
23+
JComponent left = createLeftPanel();
24+
JComponent right = createRightPanel();
25+
26+
add(left, BorderLayout.CENTER);
27+
add(right, BorderLayout.EAST);
28+
}
29+
30+
private JComponent createLeftPanel()
31+
{
32+
listener = new BoundsPopupMenuListener(false, false, -1, false);
33+
34+
String[] items =
35+
{
36+
"Item1",
37+
"Item2",
38+
"Item3",
39+
"Item4 contains longer text to display",
40+
"Item5",
41+
"Item6",
42+
"Item7",
43+
"Item8"
44+
};
45+
46+
comboBox = new JComboBox<>( items );
47+
comboBox.setPrototypeDisplayValue("ItemWWW");
48+
comboBox.setMaximumRowCount(5);
49+
comboBox.addPopupMenuListener( listener );
50+
Dimension d = comboBox.getPreferredSize();
51+
d.width = 1024;
52+
comboBox.setMaximumSize( d );
53+
54+
Box content = new Box( BoxLayout.Y_AXIS );
55+
content.add( comboBox );
56+
content.add( Box.createVerticalGlue() );
57+
58+
return content;
59+
}
60+
61+
public JPanel createRightPanel()
62+
{
63+
RelativeLayout rl = new RelativeLayout(RelativeLayout.Y_AXIS);
64+
rl.setAlignment(RelativeLayout.LEADING);
65+
rl.setFill( true );
66+
JPanel main = new JPanel( rl );
67+
main.setBorder( new TitledBorder("Change Properties:") );
68+
69+
scrollBarRequired = new JCheckBox("ScrollBar Required");
70+
scrollBarRequired.addItemListener( this );
71+
main.add( scrollBarRequired );
72+
73+
popupWider = new JCheckBox("Popup Wider");
74+
popupWider.addItemListener( this );
75+
main.add( popupWider );
76+
77+
JPanel width = new JPanel();
78+
maximumWidth = new JSpinner(new SpinnerNumberModel(-1, -1, 599 ,50));
79+
maximumWidth.addChangeListener( this );
80+
width.add( maximumWidth );
81+
width.add( new JLabel("Maximum Width") );
82+
main.add( width );
83+
84+
popupAbove = new JCheckBox("Popup Above");
85+
popupAbove.addItemListener( this );
86+
main.add( popupAbove );
87+
88+
return main;
89+
}
90+
91+
public void itemStateChanged(ItemEvent e)
92+
{
93+
JCheckBox checkBox = (JCheckBox)e.getSource();
94+
95+
if (checkBox == scrollBarRequired)
96+
listener.setScrollBarRequired( checkBox.isSelected() );
97+
else if (checkBox == popupWider)
98+
listener.setPopupWider( checkBox.isSelected() );
99+
else if (checkBox == popupAbove)
100+
listener.setPopupAbove( checkBox.isSelected() );
101+
102+
}
103+
104+
public void stateChanged(ChangeEvent e)
105+
{
106+
listener.setMaximumWidth( (Integer)maximumWidth.getValue() );
107+
}
108+
109+
public static void main(String[] args)
110+
{
111+
SwingUtilities.invokeLater(new Runnable() {
112+
public void run() {
113+
createAndShowGUI();
114+
}
115+
});
116+
}
117+
118+
public static void createAndShowGUI()
119+
{
120+
JFrame frame = new JFrame("Bounds Popup Menu Listener");
121+
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
122+
frame.add( new BoundsPopupMenuListenerDemo() );
123+
frame.pack();
124+
frame.setLocationRelativeTo(null);
125+
frame.setVisible(true);
126+
127+
}
128+
}

0 commit comments

Comments
 (0)