Java Reference
In-Depth Information
73
74
add(northPanel,
BorderLayout.NORTH
);
// add north panel
75
add(southPanel,
BorderLayout.SOUTH
);
// add south panel
76
77
radio[0].setSelected(
true
);
// set default selection
78
}
// end LookAndFeelFrame constructor
79
80
// use UIManager to change look-and-feel of GUI
81
private void
changeTheLookAndFeel(
int
value)
82
{
83
try
// change look-and-feel
84
{
85
// set look-and-feel for this application
UIManager.setLookAndFeel(looks[value].getClassName());
86
87
88
// update components in this application
SwingUtilities.updateComponentTreeUI(
this
);
89
90
}
91
catch
(Exception exception)
92
{
93
exception.printStackTrace();
94
}
95
}
96
97
// private inner class to handle radio button events
98
private class
ItemHandler
implements
ItemListener
99
{
100
// process user's look-and-feel selection
101
@Override
102
public void
itemStateChanged(ItemEvent event)
103
{
104
for
(
int
count =
0
; count < radio.length; count++)
105
{
106
if
(radio[count].isSelected())
107
{
108
label.setText(String.format(
109
"This is a %s look-and-feel"
, lookNames[count]));
110
comboBox.setSelectedIndex(count);
// set combobox index
111
changeTheLookAndFeel(count);
// change look-and-feel
112
}
113
}
114
}
115
}
// end private inner class ItemHandler
116
}
// end class LookAndFeelFrame
Fig. 22.9
|
Look-and-feel of a Swing-based GUI. (Part 3 of 3.)
1
// Fig. 22.10: LookAndFeelDemo.java
2
// Changing the look-and-feel.
3
import
javax.swing.JFrame;
4
Fig. 22.10
|
Test class for
LookAndFeelFrame
. (Part 1 of 2.)
