我需要突出显示文本并将整个屏幕/ View 移动到搜索的文本。例如:如果 View 包含 1 到 1000 个数字(行)，如果我输入搜索文本 55 并单击“搜索”按钮，首先它必须将屏幕移动到文本 55(第一次出现)，然后应该仅突出显示 55，而不是其他出现的 55。当我按住“搜索”按钮时，搜索应进一步进行并突出显示 155，然后突出显示 255、355、455、555 等。一次只能突出显示一个 55。
它应该具有与记事本相同的搜索体验。
这是一个有效的用例吗？我是 Swings 的新手，尝试构建一个小型应用程序作为学习的一部分。已经编写了示例代码(引用了其他帖子)，但这一次突出显示了所有出现的情况，并且不确定如何将 View 移动到第一个出现的情况。请提出建议。
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.text.BadLocationException;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Form extends JFrame {
private String textForSearch = "";
private JTable t;
public Form() {
t = new JTable();
String[] headers = new String[]{"first", "second", "third"};
DefaultTableModel model = new DefaultTableModel(0, 0);
model.setColumnIdentifiers(headers);
for(int i =0;i<1000;i++){
model.addRow(new Object[]{i});
model.addRow(new Object[]{i});
}
t.setModel(model);
for(int i =0;i<t.getColumnCount();i++){
t.getColumnModel().getColumn(0).setCellRenderer(getRenderer());
}
JScrollPane jsp = new JScrollPane(t);
final RightPanel right = new RightPanel();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(jsp, BorderLayout.CENTER);
add(right, BorderLayout.EAST);
pack();
setLocationRelativeTo(null);
}
private TableCellRenderer getRenderer() {
return new TableCellRenderer() {
JTextField f = new JTextField(5);
@Override
public Component getTableCellRendererComponent(JTable arg0, Object arg1, boolean arg2, boolean arg3, int arg4, int arg5) {
if(arg1 != null){
f.setText(arg1.toString());
String string = arg1.toString();
if(string.contains(textForSearch)){
int indexOf = string.indexOf(textForSearch);
try {
f.getHighlighter().addHighlight(indexOf,indexOf+textForSearch.length(),new javax.swing.text.DefaultHighlighter.DefaultHighlightPainter(Color.RED));
} catch (BadLocationException e) {
e.printStackTrace();
}
}
} else {
f.setText("");
f.getHighlighter().removeAllHighlights();
}
return f;
}
};
}
class RightPanel extends JPanel{
public RightPanel(){
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.insets = new Insets(5, 5, 5, 5);
c.gridy = 0;
final JTextField f = new JTextField();
add(f,c);
JButton b = new JButton("search");
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
textForSearch = f.getText();
t.repaint();
}
});
c.gridy++;
add(b,c);
}
}
public static void main(String[] args) throws Exception {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Form().setVisible(true);
}
});
}
}
编辑: 从其他帖子中，找到了将指针/屏幕移动到特定行的解决方案，但不确定如何获取搜索文本的 rowIndex 值:
public static void scrollToVisible(JTable table, int rowIndex, int vColIndex) {
if (!(table.getParent() instanceof JViewport)) return;
JViewport viewport = (JViewport) table.getParent();
Rectangle rect = table.getCellRect(rowIndex, vColIndex, true);
Point pt = viewport.getViewPosition();
rect.setLocation(rect.x - pt.x, rect.y - pt.y);
viewport.scrollRectToVisible(rect);
}
添加供其他人引用:
在屏幕中间显示所选行: http://www.java2s.com/Code/Java/Swing-JFC/ScrollingaCelltotheCenterofaJTableComponent.htm
最佳答案
我想我已经成功地做到了你想要的，就像你说的Notepad++搜索之类的。不要使用 new JTextField() 作为渲染器，只需扩展 JTextField 并实现 TableCellRenderer。然后在您的操作监听器中，找到具有该值的单元格的索引，并让渲染器仅突出显示该单元格。
✓ 每次搜索 1 次(而且仅突出显示 1 次)。
✓ 滚动找到的值。
✓ 没有搜索时发出蜂鸣声。
✓ 从头开始时会发出蜂鸣声。
✓ 搜索后不会丢失选择(您可以更改它)
预览:
代码中的一些额外注释。
package test;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.text.BadLocationException;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Form extends JFrame {
private String textForSearch = "";
private JTable t;
private static int rowIndex = -1;
public Form() {
t = new JTable();
String[] headers = new String[]{"first", "second", "third"};
DefaultTableModel model = new DefaultTableModel(0, 0);
model.setColumnIdentifiers(headers);
for(int i =0;i<1555;i++){
model.addRow(new Object[]{i});
}
t.setModel(model);
for(int i =0;i<t.getColumnCount();i++){
t.getColumnModel().getColumn(0).setCellRenderer(new MyTextFieldRenderer()); //Add JTextField as renderer
}
JScrollPane jsp = new JScrollPane(t);
final RightPanel right = new RightPanel();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(jsp, BorderLayout.CENTER);
add(right, BorderLayout.EAST);
pack();
setLocationRelativeTo(null);
}
private class MyTextFieldRenderer extends JTextField implements TableCellRenderer{
@Override
public Component getTableCellRendererComponent(JTable arg0, Object arg1, boolean arg2, boolean arg3, int row,
int col) {
String string = String.valueOf(arg1);
this.setText(string);
if(row == rowIndex) //Check if the row of the found text matches this value
{
int indexOf = getText().indexOf(textForSearch);
try {
getHighlighter().addHighlight(indexOf, indexOf + textForSearch.length(),
new javax.swing.text.DefaultHighlighter.DefaultHighlightPainter(Color.RED));
} catch (BadLocationException e) {
e.printStackTrace();
}
}
return this;
}
}
class RightPanel extends JPanel{
public RightPanel(){
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.insets = new Insets(5, 5, 5, 5);
c.gridy = 0;
final JTextField f = new JTextField(11);
add(f,c);
JButton b = new JButton("search");
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
//Start all over again
int tempRow = rowIndex;
if (rowIndex + 1 >= t.getRowCount())
{
rowIndex = -1;
Toolkit.getDefaultToolkit().beep(); //Notepad++ beeps i think
}
for (int row = rowIndex+1; row < t.getRowCount(); row++) { //Start checking all rows
Component cc = t.prepareRenderer(t.getCellRenderer(row, 0), row, 0);
if (cc instanceof MyTextFieldRenderer) {
MyTextFieldRenderer textField = (MyTextFieldRenderer) cc; //Grab the text of the renderer
if (textField.getText().contains(f.getText())) { //We got a match!
textForSearch = f.getText();
rowIndex = row;
int selRow = t.getSelectedRow();
//Selection code taken from here:
//https://stackoverflow.com/questions/853020/jtable-scrolling-to-a-specified-row-index/6229040#6229040
t.getSelectionModel().setSelectionInterval(row, row); //Scroll to the value
t.scrollRectToVisible(new Rectangle(t.getCellRect(row, 0, true)));
if (selRow!=-1) //Something was selected
t.setRowSelectionInterval(selRow, selRow); //Restore selection
break;
}
}
}
if (rowIndex == tempRow) //Index didn't change, means there is no value for this search
{
Toolkit.getDefaultToolkit().beep();
}
t.repaint();
}
});
c.gridy++;
add(b,c);
}
}
public static void main(String[] args) throws Exception {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Form().setVisible(true);
}
});
}
}
关于java - JTable 移动屏幕/指针来搜索文本，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50325546/