Handling keyTyped events in JTable for TAB key
In my app, I have a JTable. Some columns are non-editable.
I have attached a keyListener to the table and have overridden keyTyped() and keyReleased() methods.
In keyReleased(), I do something depending on the key code. For example: if its the VK_DELETE, I delete the row. If its some other user configured key, then I show a popup dialog where the user can enter some data, etc...
In keyTyped(), I first check if the column is one of the specific columns. Then I get the keyChar. After this, I show a dialog and pre-populate a JTextField on this dialog with that keyChar.
My issue is that 'TAB' key events arrive in keyTyped() and not in keyReleased(). As a result, the dialog is shown and the tab takes place inside the JTextfield which is incorrect.
I would like to ignore TAB keyTyped events. When I look up the keyCode in keyTyped() method, it is 0. So there is no way for me to tell what key was typed.
How can I ignore TAB events in my keyTyped() method?
thx
I now do the following to determine if TAB key has been typed
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (c == KeyEvent.VK_TAB) {
Is this correct ?
Edited by: tsc on Sep 28, 2007 12:40 PM
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I did this some time ago for a small project. Please note that the code that I'm pasting is a little too specific for your goal, but you'll be able to modify it so that it works.
public class TableKeyboardAction extends AbstractAction {
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public TableKeyboardAction() {
super();
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* @param ae The ActionEvent indicating that either TAB, SHIFT+TAB or ENTER has been
* pressed.
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
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JTable table = (JTable)ae.getSource();
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boolean tab = ac.equals("\t");
boolean enter = ac.equals("\n");
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if (tce.stopCellEditing()) {
if (row == table.getModel().getRowCount()) table.transferFocus();
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else {
((DoubleTableModel)table.getModel()).fireTableDataChanged();
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JTable (Java L&F)
Navigate out forward | Tab
Navigate out forward | Ctrl+Tab
Navigate out backward | Shift+Tab
Navigate out backward | Ctrl+Shift+Tab
Move to next cell | Tab
Move to next cell | Right Arrow
Move to previous cell | Shift+Tab
Move to previous cell | Left Arrow
Wrap to next row | Tab
Wrap to next row | Right Arrow
Wrap to previous row | Shift+Tab or Left
Wrap to previous row | Shift+Tab or Left
Block move vertical | PgUp, PgDn
Block move left | Ctrl+PgUp
Block move right | Ctrl+PgDn
Block extend vertical | Shift+PgUp/PgDn
Block extend left | Ctrl+Shift+PgUp
Block extend right | Ctrl+Shift+PgDn
Move to first cell in row | Home
Move to last cell in row | End
Move to first cell in table | Ctrl+Home
Move to last cell in table | Ctrl+End
Select all cells | Ctrl+A
Deselect current selection | Up/Down Arrow
Deselect current selection | Ctrl+Up/Down Arrow
Deselect current selection | Pgup/Pgdn
Deselect current selection | Ctrl+Pgup/Pgdn
Deselect current selection | Home/End
Deselect current selection | Ctrl+Home/End
Extend selection one row | Shift+Up/Down
Extend selection one column | Shift+Left/Right
Extend selection to beginning/end of row | Shift+Home/End
Extend selection to beginning/end of column | Ctrl+Shift+Home/End
Edit cell without overriding current contents | F2
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import java.awt.event.*;
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[/code[ -
Customize "Tab" key for JTextArea to focus next component.
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//prepare the component.
JComponent comp = new JTextArea();
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textArea.getInputMap().remove(....);but that won't work because the binding is actually defined in the parent InputMap. So I think you need to use code like:
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comp.getInputMap().getParent().remove(
KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0));
comp.getInputMap().remove(
KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0));after coding this, I am using the setFocusTraversalKeys for adding only "TAB" key as ForwardTraversalKey as given below.
Set newForwardKeys = new HashSet();
newForwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0));
comp.setFocusTraversalKeys(
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,newForwardKeys);
Set newBackwardKeys = new HashSet();
newBackwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, KeyEvent.SHIFT_DOWN_MASK));
comp.setFocusTraversalKeys(
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,newBackwardKeys);The only problem that remains now is that I have to press the "TAB" twice in order to get out of the JTextArea column
regards,
nirvan. -
Hello All,
Can anyone please help me with Tab key navigation in a JTable.I
read all the messages in this group but couldn't implement one.It
would be a great help if anyone can provide me a working example of how
to control the tab key in the JTable. I have a JTable with some of the
columns not editable, I want the focus to be in the first cell and
whenever the TAB key is pressed, the focus should go to next editable
cell and select the data in it.For example: if you take a simple table of 4 columns with column 2 not editable, The focus should begin with the first cell(1st column,1st row) and goto (3rd column,1st row) whenever TAB is pressed.It should work in reverse when SHIFT-TAB is pressed.
I'm new to Java Swing.I would greatly appreciate if anyone can provide me a working example.
Thanks in advance,
siddu.OK Here is what I have ...
public class MultipleEditorsPerColumnJTable extends JTable {
/** Creates a new instance of MultipleEditorsPerColumnJTable */
public MultipleEditorsPerColumnJTable( int the_column) {
this.myColumn = the_column;
this.rowEditors = new ArrayList();
setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);
setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,int condition, boolean pressed) {
boolean isSelected = false;
if (ks == KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0)) {
int selRow = getSelectedRow();
int rowCount = getRowCount();
int selCol = getSelectedColumn();
if (selCol == 1) { isSelected= getCellEditor(selRow,selCol).stopCellEditing();}
int targetRow = (selRow + 1) % rowCount;
this.editCellAt(targetRow, 1);
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Has anyone had any success downloading their eTextbooks for Chegg?
Would just like to know because college classes are coming up for me and was thinking of getting my textbook through my Ipad Air (even though it's highly expensive from that too unfortunatley). Wondering if anyone tried downloading from it and had a
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Pse 10 organizer freezes freezes
Organizer Loads pictures. Within 10 seconds not responding/freezes. Should I do a reinstall?If I do will I lose my aibums, tags, etc.? Please help
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Any help would be appreciated!