Single JTable Column with several diff Cell Editors
Am trying to create a single JTable column that can have several different cell editors. Java seems to be bias to having 1 cell editor for the whole column.
For example in 1 column can I have
Row1 : TextBox
Row2: Check Box
Row3: Radio Buttons
Row4: JColorChooser
At the moment I can only have one CellEditor for the whole column which is not very helpful.
the default implementation offers to provide editors per column in the tableColumn and/or editors per class type by setting default editors ( JTable.setDefaultEditor(Class class, TableCellEditor editor) ). If you look at the getCellEditor method of JTable you see that first the tablecolumns are asked for an editor, and if this doesnt succeed a default editor for the class acording to the value at the passed grid position is determined.
If this does not fullfil your needs, you can still overwrite the getCellEditor method of JTable and return whatever editor is suitable.
regards,
stefan
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Edited by: MiseryMachine on Apr 3, 2008 1:21 PM
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For instance if you want to start with 5 rows available for input do the following to your internal table that you will bind:
data itab type standard table of sflight.
do 5 times.
append initial line to itab.
enddo.
context_node->bind_table( itab ).
The other option if you need n number of rows is to add a button to the table toolbar for adding more rows. When this button is pressed, you add a new context element to the node - thereby creating a new empty row in the table. -
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import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
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protected TableCellEditor editor, defaultEditor;
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editors.put(new Integer(row), editor);
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Object value,
boolean isSelected,
int row,
int column)
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value,
isSelected,
row,
column);
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-------------------Well, I found a solution in another post
(see http://forum.java.sun.com/thread.jsp?forum=57&thread=175984&message=953833#955064 for more details).
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private TableColumn wellColumn;
private TableColumn pumpColumn;
private TableColumn partColumn;
private LeaseDropDown leaseDropDown;
private WellDropDown wellDropDown;
private PumpDropDown pumpDropDown;
private PartDropDown partDropDown;
private int currentLease = 0;
private int currentWell = 0;
private int currentPump = 0;
public MyApplication() {
leaseColumn = pumpshopTable.getColumnModel().getColumn(1);
leaseDropDown = new LeaseDropDown(companies);
leaseColumn.setCellEditor(leaseDropDown);
DefaultTableCellRenderer leaseRenderer =
new DefaultTableCellRenderer();
leaseRenderer.setToolTipText("Click for leases");
leaseColumn.setCellRenderer(leaseRenderer);
//... same for lease, well, pump, part ...
leaseDropDown.addCellEditorListener(new CellEditorListener() {
public void editingCanceled(ChangeEvent e) {
} // end editingCanceled method
public void editingStopped(ChangeEvent e) {
updateCells();
} // end editingStopped method
}); // end addCellEditorListener inner class
//.... same inner class for well, pump, part ...
} // end MyApplication constructor
public void updateCells() {
currentLease = leaseDropDown.getSelectedLease();
//... get current well, pump, part ...
leaseDropDown = new LeaseDropDown(companies); // companies=Vector,col1
leaseColumn.setCellEditor(leaseDropDown);
//... same for lease, well, pump and part columns ...
} // end updateCells method
} // end MyApplication class
public class LeaseDropDown extends AbstractCellEditor
implements TableCellEditor {
private Vector companiesVector;
private JComboBox leaseList;
public LeaseDropDown(Vector cVector) {
companiesVector = cVector;
} // end LeaseDropDown constructor
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int rowIndex, int vColIndex) {
Company thisCompany = (Company) companiesVector.get(rowIndex);
Vector leasesVector = (Vector) thisCompany.getLeases();
leaseList = new JComboBox(leasesVector);
return leaseList;
} // end getTableCellEditorComponent method
public Object getCellEditorValue() {
return leaseList.getSelectedItem();
} // end getCellEditorValue method
public int getSelectedLease() {
JOptionPane.showInputDialog("Selected lease is: " +
leaseList.getSelectedIndex());
return leaseList.getSelectedIndex();
} // end getSelectedLease method
} // end LeaseDropDown class... LeaseDropDown can be extrapolated to well, pump, and part,
handing well the selected lease, handing pump the selected
lease and well, handing part the selected lease, well and pump.
I guess my question is how do I get the selected comboboxitem (I'd
settle for the entire combobox if there's no other way) to fill in the
next column? Why does the way I have it now work for the first 2 combobox
columns and not the third?I'll try to provide more details.
I use a JComboBox implementation as a cell in a JTable. The CombBox is editable . This is what I get when I try to type in something.
java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:1507)
at java.awt.Component.getLocationOnScreen(Component.java:1481)
at javax.swing.JPopupMenu.show(JPopupMenu.java:921)
at javax.swing.plaf.basic.BasicComboPopup.show(BasicComboPopup.java:177)
at javax.swing.plaf.basic.BasicComboBoxUI.setPopupVisible(BasicComboBoxUI.java:927)
at javax.swing.JComboBox.setPopupVisible(JComboBox.java:790)
at javax.swing.JComboBox.showPopup(JComboBox.java:775)
I read some related bugs on the sun site but I am not sure if this is a bug and if it is then has it been fixed or work-around provided.
any insights ?? -
JTable custom cell editor focus problem
Hi I have created a JTable (using Java 1.4.2) and have three cell Editors, one is a JFormattedTextField, one is a JComboBox and one is a custom cell editor.
When I press tab I can select the cell with the JFormattedTextField and when I start typing the JFormattedTextField accepts my input and it is displayed in the cell. This is the type of behaviour I would like but it does not seem to work for my other 2 cell editors:
When I tab to the JComboBox cell I can see that the cell is selected but typing or using the arrow keys does not allow me to select a new value in the JComboBox. (I have also tried typing space or enter to activate the JComboBox whilst the cell is selected.) The only ways to select a new value at the moment is to first click on the cell with the mouse and then use the keyboard to select a new value. It is like the actual JComboBox is not receiving the focus? Does anyone know how to solve this problem?
I also seem to have the same problem with my custom cell editor. My custom editor is a JPanel which contains JFormattedTextField again I can tab to the cell and see that it is selected but to activate the JFormattedTextField I have to actually select it with the mouse.
I have been stuck on this for some time so if any one has any suggestions they would be much appreciated !Hi I have created a JTable (using Java 1.4.2) and have three cell Editors, one is a JFormattedTextField, one is a JComboBox and one is a custom cell editor.
When I press tab I can select the cell with the JFormattedTextField and when I start typing the JFormattedTextField accepts my input and it is displayed in the cell. This is the type of behaviour I would like but it does not seem to work for my other 2 cell editors:
When I tab to the JComboBox cell I can see that the cell is selected but typing or using the arrow keys does not allow me to select a new value in the JComboBox. (I have also tried typing space or enter to activate the JComboBox whilst the cell is selected.) The only ways to select a new value at the moment is to first click on the cell with the mouse and then use the keyboard to select a new value. It is like the actual JComboBox is not receiving the focus? Does anyone know how to solve this problem?
I also seem to have the same problem with my custom cell editor. My custom editor is a JPanel which contains JFormattedTextField again I can tab to the cell and see that it is selected but to activate the JFormattedTextField I have to actually select it with the mouse.
I have been stuck on this for some time so if any one has any suggestions they would be much appreciated ! -
Hi,
I'm trying to resize my JTable columns with this code, but it's not working. What I am doing wrong?
for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) {
TableColumn tc = table.getColumnModel().getColumn(i);
int width = (i == 0)? 10 : table.getWidth()/2 - 10; // three columns
tc.setPreferredWidth(width);
Thanks,
Andr�Now my problem is that using either of these methods
is they don't carry the user's selected column width
through updates.It sounds like the change event your table model is firing is causing the entire table to be rebuilt. I would guess that you are firing fireTableStructureChanged() which would cause the entire table to be rebuilt (columns, cell values, etc.) Just fire a change event for the minimum necessary. If you can't identify what data in your table has changed (to fire cell or row change events), but the structure (columns) of the table hasn't changed, just fire fireTableDataChanged(). This will cause the cells to be redrawn with the new values, but shouldn't cause the columns to be rebuilt and resized. -
Hai,
I inserted as a dropdownkey in table, Parent node ABc is bind to table , the child node DEf bind to coloumn dropdownbyindex. i set child node singleton as false, but its giving null pointer exception.
IXXXView.IABCNode iu=wdContext.nodeABC();
IXXXView.IDEFElement c=iu.nodeDEF().createDEFElement();
How to Solve this.
Hope Anil and Piyush will help me they already know about this problem.
regards,Hai Bharadwaj,
happy to see you again, I think I am in wrong with creating table cell editor.
i will say my requirement please help me to do:
in the table the first coloumn is number, second one is name, third one is *** ,this coloumn contains two standard Strings male and female, the can select from dropdown index.
what i did is I created context node parent ABC
in that attributes name , age and another node DEF having attribute S.
I created a table and bind the node ABC(its not allow me to check DEF node).
i deleted table cell editor of column *** and created new editor dropdownindex. and binded texts is node DEF
DEF is set to singleton false.
Give me the suggetion.
regrds,
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