I have created a simple JTable and wish to be able to disable a cell after right clicking it and selecting the option in the JPopupMenu with a JMenuItem that will disable the selected cell, here's my MouseAdapter:
private JPopupMenu popup;
private JMenuItem one;
table.addMouseListener(new MouseAdapter() {
#Override
public void mouseReleased(MouseEvent e) {
int r = table.rowAtPoint(e.getPoint());
if (r >= 0 && r < table.getRowCount()) {
table.setRowSelectionInterval(r, r);
} else {
table.clearSelection();
}
int rowindex = table.getSelectedRow();
if (rowindex < 0)
return;
if (e.isPopupTrigger() && e.getComponent() instanceof JTable) {
int rowIndex = table.rowAtPoint(e.getPoint());
int colIndex = table.columnAtPoint(e.getPoint());
one = new JMenuItem("Disable this cell");
popup = new JPopupMenu();
popup.add(one);
popup.show(e.getComponent(), e.getX(), e.getY());
}
}
});
Now, I know you can disable particular cell(s) by doing:
DefaultTableModel tab = new DefaultTableModel(data, columnNames) {
#Override
public boolean isCellEditable(int row, int column) {
return false;
}
};
but this is disabling the cell on creation of JTable but I need to disable the cell after creation. Any ideas/leads on how this can be done?
You'll need to modify your TableModel to add storage for the desired editable state of each cell, e.g. List<Boolean>. Your model can return the stored state from isCellEditable(), and your mouse handler can set the desired state in your TableModel. You may need the model/view conversion methods mentioned here.
Related
I would like to know how to set up a JComboBox in a particular cell in a JTable.
I have seen people using TableColumn setCellEditor(new DefaultCellEditor(comboBox)).
But this is for an entire column, I would like a specific cell.
So maybe I should do a custom TableCellEditor that would fit my needs, but I am a little lost on how to do it...
The goal of this is to manage filters on parameters. There are two kinds of filters:
The one that compares two values, for instance: number of balloons > 5
The one that will say is a value is inside a range of value, for instance: parameter name is inside {"one", "two", "three", "seven"}.
screenshot of my JTable:
As we can see in the picture, when there is the "comparator" "is among", we would need a JComboBox in cell[0][2] to choose the values of the range within a complete set of fields.
While cell[1][2] does not need a JComboBox, but just an editable cell.
I hope I have been clear and thank you for your help.
EDIT:
I was able to display a JComboBox only to realize, I couldn't select multiple values on it. So now I am trying to display a JList instead of a ComboBox.
But when I click on the cell, the JList is not displayed, I don't know why.
Here is my code:
JTable tableParametersFilter = new JTable(modelParametersFilter){
// Determine editor to be used by row
public TableCellEditor getCellEditor(int row, int column)
{
int modelColumn = convertColumnIndexToModel( column );
int modelRow = convertRowIndexToModel( row );
Parameter_Filter pf = view.listParameter_Filter.get(modelRow);
if(modelColumn == 2 && pf instanceof Parameter_Filter_To_List_Of_Fields) {
Parameter_Filter_To_List_Of_Fields pftlof = (Parameter_Filter_To_List_Of_Fields)pf;
JList<String> list = new JList<String>(pftlof.list_of_fields_total_names);
list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION );
list.setLayoutOrientation(JList.VERTICAL_WRAP);
list.setVisibleRowCount(-1);
return new TableCellEditor() {
#Override
public boolean stopCellEditing() {
return false;
}
#Override
public boolean shouldSelectCell(EventObject anEvent) {
return false;
}
#Override
public void removeCellEditorListener(CellEditorListener l) {
}
#Override
public boolean isCellEditable(EventObject anEvent) {
return true;
}
#Override
public Object getCellEditorValue() {
return list.getSelectedValuesList().toString();
}
#Override
public void cancelCellEditing() {
}
#Override
public void addCellEditorListener(CellEditorListener l) {
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
return list;
}
};
}
return super.getCellEditor(row, column);
}
};
Any suggestions?
I have solved my problem.
I have not been able to add multiple choice JComboBox, or a displayable JList on the Cell of the Jtable.
Instead, I have used a JOptionPane that displayed a JList.
Here's the code:
tableParametersFilter.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
JTable target = (JTable)e.getSource();
int row = target.getSelectedRow();
int column = target.getSelectedColumn();
if(column == 2){
Parameter_Filter pf = view.listParameter_Filter.get(row);
if(pf instanceof Parameter_Filter_To_List_Of_Fields) {
Parameter_Filter_To_List_Of_Fields pftlof = (Parameter_Filter_To_List_Of_Fields) pf;
JList<String> jlist = new JList<String>(pftlof.list_of_fields_total_names);
String StringOfIntArray = (String) tableParametersFilter.getValueAt( row, 2);
int[] list_parameter_id = Statique.StringOfIntArrayToIntegerArray(StringOfIntArray);
if(list_parameter_id.length < jlist.getModel().getSize()) {
int[] list_places = pftlof.getPlaceOfParameters(list_parameter_id);
for(int i = 0; i < list_places.length; i++) {
jlist.setSelectedIndices(list_places);
}
}
JScrollPane scrollPane = new JScrollPane(jlist);
scrollPane.setPreferredSize( new Dimension( 500, 500 ) );
JOptionPane.showMessageDialog(
null, scrollPane, "Multi-Select Example", JOptionPane.PLAIN_MESSAGE);
int[] SelectedIndices = jlist.getSelectedIndices();
Integer[] listParametersId = new Integer[SelectedIndices.length];
for(int i = 0; i < SelectedIndices.length; i++) {
int id = pftlof.list_of_fields_Total[SelectedIndices[i]].id;
try {
Parameter p = Parameter.getParameter(
id,
Parameter_Filter_To_List_Of_Fields.getTotal_Parameter_In_Parameter_Filter_To_List_Of_Fields());
listParametersId[i] = p.id;
} catch (NoSuchFieldException e1) {
e1.printStackTrace();
}
}
System.out.println(Arrays.toString(listParametersId));
tableParametersFilter.setValueAt(Arrays.toString(listParametersId), row, 2);
}
}
}
}
i have created a table and in one of the rows there's an evaluate button and an image button once u click on one of them an Action should happen but the problem is once i created an Action Listener inside the createCell method it doesn't seem to function once i click
Object[][] rows = new Object[articles.size()][];
for (int iter = 0; iter < rows.length; iter++) {
rows[iter] = new Object[]{
articles.get(iter).getName(),
0,
articles.get(iter).getDescription(),
articles.get(iter).getLabel(),
articles.get(iter).getQuantity(),
articles.get(iter).getRating(), 0
};
}
TableModel model = new DefaultTableModel(new String[]{"name", "description", "Image", "label", "quantity", "rating", "rate"}, rows);
Table table = new Table(model) {
#Override
protected Component createCell(Object value, int row, int column, boolean editable) {
Button eval = new Button("Evaluate");
Button img = new Button("See image");
if (row > -1 && column == 2) {
System.out.println("Value="+value.toString());
return img;
}
if (row > -1 && column == 6) {
return eval;
}
eval.addActionListener((ActionListener) (ActionEvent evt) -> {
System.out.println("click on eval");
});
img.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent evt) {
System.out.println("click on img");
}
});
return super.createCell(value, row, column, editable);
}
};
add(table);
You have this:
if (row > -1 && column == 6) {
return eval;
}
Before the code that adds the action listener so that code isn't reached.
I suggest running in the debugger and placing breakpoint, this helps track issues such as this quickly.
into something like this when I right click the row.after I clicked view profile it will popup and new jFrame and display his profile. i am using GUI builder. sorry for being noob. i'm still beginner.it's hard to find on google how to do right click thing.
UPDATE2
I created the menu now but how to get the Student ID cell only... this is my code
JMenuItem item = new JMenuItem("View Profile");
JMenuItem item2 = new JMenuItem("Delete");
item.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(studentList.this, "Testing");
}
});
jPopupMenu1.add(item);
jPopupMenu1.add(item2);
and on my MouseReleased
private void tableMouseReleased(java.awt.event.MouseEvent evt) {
int r = table.rowAtPoint(evt.getPoint());
if (r >= 0 && r < table.getRowCount()) {
table.setRowSelectionInterval(r, r);
} else {
table.clearSelection();
}
int rowindex = table.getSelectedRow();
if (rowindex < 0) {
return;
}
if (evt.isPopupTrigger() && evt.getComponent() instanceof JTable ) {
jPopupMenu1.show(evt.getComponent(), evt.getX(), evt.getY());
}
}
The easiest way would be to use JComponent#setComponentPopupMenu
You will also want to take a look at How to use menus
I have a JTable in a GUI and I want to return a number based on the value of the cell that a user clicks on. This is the code:
ListSelectionModel newmodel = mytable.getSelectionModel();
newmodel.addListSelectionListener(new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent e) {
int row = mytable.getSelectedRow();
int column = mytable.getSelectedColumn();
int cell = getNewNum();
datefield.setText(String.valueOf(cell));
}
});
I have a couple of problems with this. Firstly this method makes my table editable. Before I used this method I couldn't edit the table but now I can delete entries. I looked in the API but I don't know why this is. Secondly, if I click on a cell in row 3, say, and then I click on another row in cell 3, no event is registered. How can I make an event from clicking in a cell on the currently selected row?
A common method is to get the point where the user clicked through the event:
jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
#Override
public void mouseClicked(java.awt.event.MouseEvent evt) {
int row = jTable1.rowAtPoint(evt.getPoint());
int col = jTable1.columnAtPoint(evt.getPoint());
if (row >= 0 && col >= 0) {
......
}
}
});
Here is a second option using selection mode:
jTable1.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
#Override
public void mouseClicked(java.awt.event.MouseEvent evt) {
...
int row = jTable1.getSelectedRow();
int col = jTable1.getSelectedColumn());
if (evt.getClickCount() > 1) { // double-click etc...
...
If you go:
public boolean isCellEditable(int row, int col) {
return false;
}
Then your JTable will not be editable.
Finally in order to get the value you want, you just need to call the getValueAt(row,col) of your JTable Model, or get the contents like this:
Object foo = jTable1.getModel().getValueAt(row, col);
This is my first time asking here so forgive me if something isn't appropriate, and sorry if my English isn't very good.
Well, to make it short, currently I'm developing a Java desktop app with Swing and I have a problem using table. I have rows with each row have a button to delete the row. Everything is okay (i can delete rows with no problem) until i try to delete the last row. The last row can be deleted but apparently there is an exception, something like this:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 4 >= 4
at java.util.Vector.elementAt(Vector.java:427)
at javax.swing.table.DefaultTableModel.setValueAt(DefaultTableModel.java:648)
at javax.swing.JTable.setValueAt(JTable.java:2710)
at javax.swing.JTable.editingStopped(JTable.java:4712)
at javax.swing.AbstractCellEditor.fireEditingStopped(AbstractCellEditor.java:125)
From the stack trace, it seems that "4" is my previously deleted last row index, but i have no idea how to deal with this. I already search for solution but i still can't solve it. Note that there are still other rows when i delete the last row, and after that i can't delete the others rows. The same exception also resulted when i click the delete button.
Oh. and I use removeRow() from DefaultTableModel to delete the row. Any help will be appreciated. Thanks.
EDIT
These are the code I use.
public class ViewDetail extends JInternalFrame implements ActionListener {
...
String column[] = { "Aaa", "Bbb", "Delete This"};
tableModel = new DefaultTableModel();
Object row[][] = new Object[size][column.length];
//fill the data from db
int r = 0;
for (int i = 0; i < size; i++) {
row[r][0] = ...;
row[r][1] = ...;
row[r][2] = "Delete";
r++;
}
tableModel.setDataVector(row, column);
table = new JTable(tableModel);
tableColumn = table.getColumn("Aaa");
tableColumn.setPreferredWidth(75);
tableColumn = table.getColumn("Bbb");
tableColumn.setPreferredWidth(75);
tableColumn = table.getColumn("Delete This");
tableColumn.setPreferredWidth(75);
tableColumn.setCellRenderer(new ButtonRenderer());
tableColumn.setCellEditor(new ButtonEditor(new JCheckBox());
...
}
public class ButtonRenderer extends JButton implements TableCellRenderer {
public ButtonRenderer() {
setOpaque(true);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(UIManager.getColor("Button.background"));
}
setText((value == null) ? "" : value.toString());
return this;
}
}
public class ButtonEditor extends DefaultCellEditor {
protected JButton button;
private String label;
private boolean isPushed;
private JTable table;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
isPushed = true;
this.table = table;
return button;
}
public Object getCellEditorValue() {
if (isPushed) {
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
tableModel.removeRow(table.getSelectedRow());
}
isPushed = false;
return new String(label);
}
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
protected void fireEditingStopped() {
super.fireEditingStopped();
}
}
Swing is trying to set the new value into the row you remove! Try moving the remove code into a Runnable and use invokeLater in the swing utility class to execute it.
could you post the code where you init, add elements and delete in your JTable?
My first guess is that you are either doing the classical mistake
"I have 4 elements in my table so to delete the last one I remove(4)" when you your table goes from 0 to 3 in indices
or you are trying to remove several object in the same loop like
for(int i = 0; i<lenght; i++){
if(i%2==0){//every even number
tab.remove(i);
}
}
then your are modifying the size of your table, the elements are shifted but your not taking it in account when removing.
those are just guesses/pointer to what might cause the problem. please post your code if this doesn't solve it
The Table Button Column shows how you can render a column as a button and how to add an Action that is executed when the button is clicked. The example Action just happens to show how to delete a row.
Here you need to remove only 0 th row that should be iterated
private void refreshTable() {
int rowCount= model.getRowCount();
// System.out.println(rowCount);
for(int i=0;i<rowCount;i++ ){
model.removeRow(0);
//System.out.println(i);
}
}
you can add new vaiable and check to fireEditingStopped() :
public class ButtonEditor extends DefaultCellEditor {
//create new variable
private boolean isDeleteRow = false;
/////////////////
protected JButton button;
private String label;
private boolean isPushed;
private JTable table;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
isPushed = true;
this.table = table;
// set false when click to button
isDeleteRow = false;
/////////////////
return button;
}
public Object getCellEditorValue() {
if (isPushed) {
// set true when isPushed button
isDeleteRow = true;
/////////////////
}
isPushed = false;
return new String(label);
}
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
protected void fireEditingStopped() {
super.fireEditingStopped();
//check if isDeleteRow, remove row
if(isDeleteRow)
{
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
tableModel.removeRow(table.getSelectedRow());
}
/////////////////
}
}