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/**
* @version 1.10 1999-10-14
* @author Cay Horstmann
*/
import java.awt.Component;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.text.BreakIterator;
import java.util.Locale;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class TextBoundaryTest {
public static void main(String[] args) {
JFrame frame = new TextBoundaryFrame();
frame.show();
}
}
class TextBoundaryFrame extends JFrame {
public TextBoundaryFrame() {
setSize(400, 400);
setTitle("TextBoundaryTest");
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
ActionListener listener = new ActionListener() {
public void actionPerformed(ActionEvent event) {
updateDisplay();
}
};
JPanel p = new JPanel();
addCheckBox(p, characterCheckBox, cbGroup, listener, false);
addCheckBox(p, wordCheckBox, cbGroup, listener, false);
addCheckBox(p, lineCheckBox, cbGroup, listener, false);
addCheckBox(p, sentenceCheckBox, cbGroup, listener, true);
getContentPane().setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.NONE;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("Locale"), gbc, 0, 0, 1, 1);
gbc.anchor = GridBagConstraints.WEST;
add(localeCombo, gbc, 1, 0, 1, 1);
add(p, gbc, 0, 1, 2, 1);
gbc.fill = GridBagConstraints.BOTH;
gbc.weighty = 100;
add(new JScrollPane(inputText), gbc, 0, 2, 2, 1);
add(new JScrollPane(outputText), gbc, 0, 3, 2, 1);
locales = BreakIterator.getAvailableLocales();
for (int i = 0; i < locales.length; i++)
localeCombo.addItem(locales[i].getDisplayName());
localeCombo.setSelectedItem(Locale.getDefault().getDisplayName());
localeCombo.addActionListener(listener);
inputText.setText("The quick, brown fox jump-ed\n"
+ "over the lazy \"dog.\" And then...what happened?");
updateDisplay();
}
public void addCheckBox(Container p, JCheckBox checkBox, ButtonGroup g,
ActionListener listener, boolean v) {
checkBox.setSelected(v);
checkBox.addActionListener(listener);
g.add(checkBox);
p.add(checkBox);
}
public void add(Component c, GridBagConstraints gbc, int x, int y, int w,
int h) {
gbc.gridx = x;
gbc.gridy = y;
gbc.gridwidth = w;
gbc.gridheight = h;
getContentPane().add(c, gbc);
}
public void updateDisplay() {
Locale currentLocale = locales[localeCombo.getSelectedIndex()];
BreakIterator currentBreakIterator = null;
if (characterCheckBox.isSelected())
currentBreakIterator = BreakIterator
.getCharacterInstance(currentLocale);
else if (wordCheckBox.isSelected())
currentBreakIterator = BreakIterator.getWordInstance(currentLocale);
else if (lineCheckBox.isSelected())
currentBreakIterator = BreakIterator.getLineInstance(currentLocale);
else if (sentenceCheckBox.isSelected())
currentBreakIterator = BreakIterator
.getSentenceInstance(currentLocale);
String text = inputText.getText();
currentBreakIterator.setText(text);
outputText.setText("");
int from = currentBreakIterator.first();
int to;
while ((to = currentBreakIterator.next()) != BreakIterator.DONE) {
outputText.append(text.substring(from, to) + "|");
from = to;
}
outputText.append(text.substring(from));
}
private Locale[] locales;
private BreakIterator currentBreakIterator;
private JComboBox localeCombo = new JComboBox();
private JTextArea inputText = new JTextArea(6, 40);
private JTextArea outputText = new JTextArea(6, 40);
private ButtonGroup cbGroup = new ButtonGroup();
private JCheckBox characterCheckBox = new JCheckBox("Character");
private JCheckBox wordCheckBox = new JCheckBox("Word");
private JCheckBox lineCheckBox = new JCheckBox("Line");
private JCheckBox sentenceCheckBox = new JCheckBox("Sentence");
}
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