【发布时间】：2019-03-21 14:03:34
【问题描述】：
我的 JCheckBox “检查所有”标题列的工作原理是，如果我选中该框，则该列中的所有复选框都会被选中。我想这样做，如果您选中复选框标题以使列中的所有框都被选中，则取消选中列中的复选框之一将取消选中复选框标题。
public class TablePanel extends javax.swing.JPanel {
public TablePanel() {
initComponents();
populateStringArrays(); //populate string arrays that will populate my table
table.setModel(tableModel);
table.getTableHeader().setReorderingAllowed(false);
setWidthOfTable();
loadTable(); //loads table with my array
table.getColumnModel().getColumn(5).setHeaderRenderer(new BoxRenderer(new MyItemListener()));
}
public class BoxRenderer extends JCheckBox implements TableCellRenderer, MouseListener{
String columnTitle = "Rings";
protected BoxRenderer rendererComponent;
int column;
boolean mousePressed = false;
public BoxRenderer(ItemListener listener){
rendererComponent = this;
rendererComponent.addItemListener(listener);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if(table != null){
JTableHeader header = table.getTableHeader();
if(header != null){
rendererComponent.setForeground(header.getForeground());
rendererComponent.setBackground(header.getBackground());
rendererComponent.setFont(header.getFont());
Border border = header.getBorder();
header.setBorder(BorderFactory.createRaisedBevelBorder());
rendererComponent.setHorizontalTextPosition(SwingConstants.LEADING);
rendererComponent.setHorizontalAlignment(CENTER);
header.addMouseListener(rendererComponent);
}
}
setColumn(column);
rendererComponent.setText(columnTitle);
return rendererComponent;
}
protected void setColumn(int column) {
this.column = column;
}
public int getColumn() {
return column;
}
protected void handleClickEvent(MouseEvent e) {
if (mousePressed) {
mousePressed=false;
JTableHeader header = (JTableHeader)(e.getSource());
JTable tableView = header.getTable();
TableColumnModel columnModel = tableView.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int column = tableView.convertColumnIndexToModel(viewColumn);
if (viewColumn == this.column && e.getClickCount() == 1 && column != -1) {
doClick();
}
}
}
public void mouseClicked(MouseEvent e) {
((JTableHeader)e.getSource()).repaint();
}
public void mousePressed(MouseEvent e) {
mousePressed = true;
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
}
class MyItemListener implements ItemListener{
@Override
public void itemStateChanged(ItemEvent e) {
Object source = e.getSource();
if (source instanceof AbstractButton == false){
return;}
boolean checked = e.getStateChange() == ItemEvent.SELECTED;
System.out.println("Boolean checked = " + checked);
if(checked == true){
checkAll();
}else{
uncheckAll();
}
}
}
private void checkAll(){
for(int i=0; i<tableRecordArrayList.size(); i++){
table.getModel().setValueAt(true, i, 5);
}
}
private void uncheckAll(){
for(int i=0; i<tableRecordArrayList.size(); i++){
table.getModel().setValueAt(false, i, 5);
}
}
class TableModel extends javax.swing.table.AbstractTableModel{
/**Constructor**/
@Override
public int getRowCount() {
return tableRecordArrayList.size();
}
@Override
public int getColumnCount() {
return 6;
}
/**refresh for changes**/
public void refreshTable(){
fireTableDataChanged();
}
@Override
public Object getValueAt(int row, int column) {
TableRecord record = tableRecordArrayList.get(row);
switch(column){
case 0:
return record.firstName;
case 1:
return record.middleName;
case 2:
return record.lastName;
case 3:
return record.age;
case 4:
return record.height;
case 5:
return record.ring;
}
return "N/A";
}
@Override
public String getColumnName(int column){
/**set the title of the columns of the table**/
switch(column){
case 0:
return "First Name";
case 1:
return "Middle Name";
case 2:
return "Last Name";
case 3:
return "Age";
case 4:
return "Height(cm)";
case 5:
return "Has Championship Ring";
}
return "N/A";
}
/**turn column into checkboxes**/
@Override
public Class<?> getColumnClass(int column){
if(column == 5){
return Boolean.class;
}
return String.class;
}
@Override
public boolean isCellEditable(int row, int column){
return column == 5;
}
@Override
public void setValueAt(Object avalue, int row, int column){
TableRecord record;
Boolean v;
switch(column){
case 5:
record = tableRecordArrayList.get(row);
v = (Boolean) avalue;
record.ring = v;
fireTableCellUpdated(row,1);
printArrayList();
fireTableDataChanged();
break;
}
}
}
}
这个问题已经解决了。请访问此链接以找到解决方案。
https://coderanch.com/t/700630/java/uncheck-JCheckBox-header-columns#3288215
【问题讨论】：
-
我已经尝试将一个全新的标题渲染器附加到表格中，希望它会再次取消选中它，但是当我取消选中列中的单元格时它没有
-
如需尽快获得更好的帮助，请发帖minimal reproducible example 或Short, Self Contained, Correct Example。
标签： java swing jtable jcheckbox jtableheader