在下面的代码,对于同一个表的不同行,我想设置可编辑 ComboBox担任主编的第一行(以便用户可以从可用的选项中选择或键入自己的),为第二排和默认文件选择textFiled的行的其余部分。
问题:和步骤重现:
1-运行的代码,2-单击第二行,并选择一个文件夹(该行变为黄色)3 -现在点击第一行选择电影的类型(只需点击,无需输入任何内容或选择)4-现在再拍点击回到第二行(文件夹选择)
你会看到此行的内容将被复制到第一行?
我知道有很多事情我没有做这不是线程安全的,处理引用等等吧,或许处理波动。 我在想,如果你们能帮助我解决此问题,并把这个代码的东西固体。
以下以上步骤之后:
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.File;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import javax.swing.table.TableModel;
public class CCellEditor extends DefaultCellEditor {
private JTable m_Table = null;
public CCellEditor(JFrame parentFrame, JTable table) {
super(new JTextField());
super.setClickCountToStart(1);
m_Table = table;
}
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, final int row, int column){
if(row==0) // comBoBox for First row
{
Object[] objectArray = {"3D","2D"};
JComboBox comboBox = new JComboBox(objectArray);
comboBox.setEditable(true);
comboBox.setSelectedItem(value);
ItemListener itemListener = new ItemListener() {
public void itemStateChanged(ItemEvent e) {
if(e.getStateChange() == ItemEvent.SELECTED) {
if(null != m_Table.getCellEditor()){
m_Table.getCellEditor().stopCellEditing();
}
m_Table.setValueAt(e.getItem(), row, 1);
}
}
};
comboBox.addItemListener(itemListener);
PopupMenuListener popMenuEvent = new PopupMenuListener() {
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
String sValue = (String)m_Table.getValueAt(row, 1);
if(null != m_Table.getCellEditor()){
m_Table.getCellEditor().stopCellEditing();
}
m_Table.setValueAt(sValue, row, 1);
}
public void popupMenuCanceled(PopupMenuEvent e) {
}
};
comboBox.addPopupMenuListener(popMenuEvent);
return comboBox;
}
else if(row==1) // fileChooser for Second row
{
JFileChooser fileChooser;
fileChooser = new JFileChooser("c:\\");
fileChooser.setFileSelectionMode( JFileChooser.DIRECTORIES_ONLY );
fileChooser.setVisible(true);
int returnVal = fileChooser.showOpenDialog(null);
JTextField textField = (JTextField)super.getTableCellEditorComponent(table, value, isSelected, row, column);
textField.setBackground(Color.yellow);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File m_fFirmware= fileChooser.getSelectedFile();
textField.setText(m_fFirmware.getPath());
return textField;
}else
{
return textField;
}
}
// for any other rows
JTextField textField = (JTextField)super.getTableCellEditorComponent(table, value, isSelected, row, column);
return textField;
}
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String[] columnTitles = { "Name", "Value"};
Object[][] dataEntries = {
{ "Movie Type:", "3D" }, {"Folder:","C:"}, {"# of Movies requested:","5"}};
TableModel model = new EditableTableModel(columnTitles, dataEntries);
JTable table = new JTable(model);
table.createDefaultColumnsFromModel();
table.setDefaultEditor(Object.class, new CCellEditor(frame, table));
frame.add(new JScrollPane(table));
frame.setSize(300, 200);
frame.setVisible(true);
}
}
这里是EditableTableModel类:
import javax.swing.table.AbstractTableModel;
class EditableTableModel extends AbstractTableModel {
String[] columnTitles;
Object[][] dataEntries;
int rowCount;
public EditableTableModel(String[] columnTitles, Object[][] dataEntries) {
this.columnTitles = columnTitles;
this.dataEntries = dataEntries;
}
public int getRowCount() {
return dataEntries.length;
}
public int getColumnCount() {
return columnTitles.length;
}
public Object getValueAt(int row, int column) {
return dataEntries[row][column];
}
public String getColumnName(int column) {
return columnTitles[column];
}
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
public boolean isCellEditable(int row, int column) {
return true;
}
public void setValueAt(Object value, int row, int column) {
dataEntries[row][column] = value;
}
}