java – 更改搜索值时在JTable中刷新/更新荧光笔
作者：互联网
如何在更改JTextField中的搜索值后刷新JTable中的荧光笔？它可以在JTextfield下使用JTextArea,但是JTable不会刷新荧光笔.有什么建议？？
这是我的代码：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.text.*;
import javax.swing.text.DefaultHighlighter.DefaultHighlightPainter;
public class BeispielTabelle {
JTextField field;
JTextArea textFeld = new JTextArea("Hello World!");
String input="Stefan";
//Titel der Tabelle
String[] title = {"EINS", "ZWEI", "DREI"};
//Tabellendaten
Object[][] playerdata = {
{"34", "Stefan", "Mein Name ist Stefan"},
{"32", "Dirk", "Ich bin der Dirk"},
{"99", "Patrick", "Ich heisse Patrick"},
{"100", "Anna", "Ich bin die Anna"},};
//TableModel
DefaultTableModel model = new DefaultTableModel(playerdata,title);
//Tabelle erstellen
JTable textTable = new JTable(model);
public JPanel erstelleTabelle() {
JPanel totalGUI = new JPanel();
//CellRenderer
SearchRenderer cellRenderer = new SearchRenderer();
//Spaltenbreiten festlegen
textTable.setDefaultRenderer(String.class, cellRenderer);
textTable.getColumnModel().getColumn(0).setCellRenderer(cellRenderer);
textTable.getColumnModel().getColumn(1).setCellRenderer(cellRenderer);
textTable.getColumnModel().getColumn(2).setCellRenderer(cellRenderer);
textTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); // Autoresizing abschalten, sonst sind alle Spalten gleich breit:
textTable.getColumnModel().getColumn(0).setPreferredWidth(60);
textTable.getColumnModel().getColumn(1).setPreferredWidth(60);
textTable.getColumnModel().getColumn(2).setPreferredWidth(180);
//das Ganze scrollbar machen
JScrollPane scrollPane = new JScrollPane(textTable);
//TextFeld erstellen
field = new JTextField();
field.addActionListener(new ActionListener () {
@Override
public void actionPerformed(ActionEvent e) {
input = field.getText();
System.out.println(input);
//updateRowHeights();
highlightText();
}
});
totalGUI.add(scrollPane);
totalGUI.add(field);
totalGUI.add(textFeld);
return totalGUI;
}
void highlightText() {
DefaultHighlightPainter yellowPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
Highlighter highlighter = textFeld.getHighlighter();
highlighter.removeAllHighlights();
String text = textFeld.getText();
String pattern = input;
int index = text.indexOf(pattern);
while ( index >= 0 ) {
int len = pattern.length();
try {
highlighter.addHighlight(index, index+len, yellowPainter);
} catch (BadLocationException e) {
e.printStackTrace();
}
index = text.indexOf(pattern, index+len);
}
}
private static void createAndShowGUI() {
//create main frame
JFrame mainFrame = new JFrame("");
BeispielTabelle test = new BeispielTabelle();
JPanel totalGUI = new JPanel();
totalGUI = test.erstelleTabelle();
totalGUI.setLayout(new BoxLayout(totalGUI, BoxLayout.Y_AXIS));
//visible mode
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.add(totalGUI); //integrate main panel to main frame
mainFrame.pack();
mainFrame.setVisible(true);
}
public static void main (String[] args) {
createAndShowGUI();
}//main
}//GUI_main
这是我的SearchRenderer
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.text.BadLocationException;
import java.awt.*;
public class SearchRenderer extends JTextArea implements TableCellRenderer {
/**
*
*/
private static final long serialVersionUID = 1L;
public SearchRenderer() {}//constructor
BeispielTabelle tabelle = new BeispielTabelle();
String textForSearch=tabelle.input;
@Override
public Component getTableCellRendererComponent (JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column ) {
this.setText((String) value);
if(value != null) {
String string = value.toString();
if(string.contains(textForSearch)){
int indexOf = string.indexOf(textForSearch);
while(indexOf >=0) {
try {
this.getHighlighter().addHighlight(indexOf,indexOf+textForSearch.length(),new javax.swing.text.DefaultHighlighter.DefaultHighlightPainter(Color.GREEN));
} catch (BadLocationException e) {
e.printStackTrace();
}
indexOf = string.indexOf(textForSearch, indexOf+textForSearch.length());
}
}
} else {
this.setText("");
this.getHighlighter().removeAllHighlights();
}
return this;
}
}
解决方法:
也许你可以使用JTable #repaint()
import java.awt.*;
import java.util.Objects;
import java.util.regex.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.text.*;
public final class SearchRendererTest {
private final JTextField field = new JTextField("Stefan");
private final SearchRenderer renderer = new SearchRenderer();
//Titel der Tabelle
private final String[] title = {"EINS", "ZWEI", "DREI"};
//Tabellendaten
private final Object[][] playerdata = {
{"34", "Stefan", "Mein Name ist Stefan"},
{"32", "Dirk", "Ich bin der Dirk"},
{"99", "Patrick", "Ich heisse Patrick"},
{"100", "Anna", "Ich bin die Anna"},
};
private final TableModel model = new DefaultTableModel(playerdata, title);
private final JTable table = new JTable(model);
public JComponent makeUI() {
table.setDefaultRenderer(Object.class, renderer);
field.getDocument().addDocumentListener(new DocumentListener() {
@Override public void insertUpdate(DocumentEvent e) {
fireDocumentChangeEvent();
}
@Override public void removeUpdate(DocumentEvent e) {
fireDocumentChangeEvent();
}
@Override public void changedUpdate(DocumentEvent e) {
/* not needed */
}
});
fireDocumentChangeEvent();
JPanel sp = new JPanel(new BorderLayout(5, 5));
sp.add(new JLabel("regex pattern:"), BorderLayout.WEST);
sp.add(field);
sp.add(Box.createVerticalStrut(2), BorderLayout.SOUTH);
sp.setBorder(BorderFactory.createTitledBorder("Search"));
JPanel p = new JPanel(new BorderLayout(5, 5));
p.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
p.add(sp, BorderLayout.NORTH);
p.add(new JScrollPane(table));
return p;
}
private void fireDocumentChangeEvent() {
String pattern = field.getText().trim();
renderer.setPattern(pattern);
table.repaint();
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new SearchRendererTest().makeUI());
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
class SearchRenderer implements TableCellRenderer {
private static final Color BACKGROUND_SELECTION_COLOR = new Color(220, 240, 255);
private final transient Highlighter.HighlightPainter highlightPainter
= new DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
private final JTextField field = new JTextField();
private String pattern = "";
private String prev;
public boolean setPattern(String str) {
if (str == null || str.equals(pattern)) {
return false;
} else {
prev = pattern;
pattern = str;
return true;
}
}
public SearchRenderer() {
super();
field.setOpaque(true);
field.setBorder(BorderFactory.createEmptyBorder());
field.setForeground(Color.BLACK);
field.setBackground(Color.WHITE);
field.setEditable(false);
}
@Override public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
String txt = Objects.toString(value, "");
Highlighter highlighter = field.getHighlighter();
highlighter.removeAllHighlights();
field.setText(txt);
field.setBackground(isSelected ? BACKGROUND_SELECTION_COLOR : Color.WHITE);
if (pattern != null && !pattern.isEmpty() && !pattern.equals(prev)) {
Matcher matcher = Pattern.compile(pattern).matcher(txt);
if (matcher.find()) {
int start = matcher.start();
int end = matcher.end();
try {
highlighter.addHighlight(start, end, highlightPainter);
} catch (BadLocationException e) {
e.printStackTrace();
}
}
}
return field;
}
}
标签：jtextarea,java,swing,jtable,swing-highlighter 来源： https://codeday.me/bug/20190831/1772272.html