public void search() {
hilit.removeAllHighlights();
String s = entry.getText();
if (s.length() <= 0) {
message("Nothing to search");
return;
}
String content = textArea.getText();
int index = content.indexOf(s, 0);
if (index >= 0) {
try {
int end = index + s.length();
hilit.addHighlight(index, end, painter);
textArea.setCaretPosition(end);
entry.setBackground(entryBg);
message("'" + s + "' found. Press ESC to end search");
} catch (BadLocationException e) {
e.printStackTrace();
}
} else {
entry.setBackground(ERROR_COLOR);
message("'" + s + "' found. Press ESC to start a new search");
}
}
public TextFieldDemo() {
initComponents();
InputStream in = getClass().getResourceAsStream("content.txt");
try {
textArea.read(new InputStreamReader(in), null);
} catch (IOException e) {
e.printStackTrace();
}
hilit = new DefaultHighlighter();
painter = new DefaultHighlighter.DefaultHighlightPainter(HILIT_COLOR);
textArea.setHighlighter(hilit);
entryBg = entry.getBackground();
entry.getDocument().addDocumentListener(this);
InputMap im = entry.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
ActionMap am = entry.getActionMap();
im.put(KeyStroke.getKeyStroke("ESCAPE"), CANCEL_ACTION);
am.put(CANCEL_ACTION, new CancelAction());
}
private void initComponents() {
entry = new JTextField();
textArea = new JTextArea();
status = new JLabel();
jLabel1 = new JLabel();
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setTitle("TextFieldDemo");
textArea.setColumns(20);
textArea.setLineWrap(true);
textArea.setRows(5);
textArea.setWrapStyleWord(true);
textArea.setEditable(false);
jScrollPane1 = new JScrollPane(textArea);
jLabel1.setText("Enter text to search:");
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
ParallelGroup hGroup = layout.createParallelGroup(GroupLayout.Alignment.LEADING);
SequentialGroup h1 = layout.createSequentialGroup();
ParallelGroup h2 = layout.createParallelGroup(GroupLayout.Alignment.TRAILING);
h1.addContainerGap();
h2.addComponent(
jScrollPane1,
GroupLayout.Alignment.LEADING,
GroupLayout.DEFAULT_SIZE,
450,
Short.MAX_VALUE);
h2.addComponent(
status, GroupLayout.Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 450, Short.MAX_VALUE);
SequentialGroup h3 = layout.createSequentialGroup();
h3.addComponent(jLabel1);
h3.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED);
h3.addComponent(entry, GroupLayout.DEFAULT_SIZE, 321, Short.MAX_VALUE);
h2.addGroup(h3);
h1.addGroup(h2);
h1.addContainerGap();
hGroup.addGroup(GroupLayout.Alignment.TRAILING, h1);
layout.setHorizontalGroup(hGroup);
ParallelGroup vGroup = layout.createParallelGroup(GroupLayout.Alignment.LEADING);
SequentialGroup v1 = layout.createSequentialGroup();
v1.addContainerGap();
ParallelGroup v2 = layout.createParallelGroup(GroupLayout.Alignment.BASELINE);
v2.addComponent(jLabel1);
v2.addComponent(
entry, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE);
v1.addGroup(v2);
v1.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED);
v1.addComponent(jScrollPane1, GroupLayout.DEFAULT_SIZE, 233, Short.MAX_VALUE);
v1.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED);
v1.addComponent(status);
v1.addContainerGap();
vGroup.addGroup(v1);
layout.setVerticalGroup(vGroup);
pack();
}