I am trying to update the scrollbar on the scrollpane automatically when going up and down in my custom made popupmenu. But it doesn´t work. Have a look at my fully runnable example below where I have added my custom JPopupMenu based component and a JComboBox to compare with. As you can see, in the JComboBox the scrollpane updates its position so the currently selected item always is visible. But that does not work with my component and I don´t know how to set that.
My SSCCE:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.ScrollPane;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Vector;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class ScrollFocus extends JFrame {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new ScrollFocus();
}
});
}
public ScrollFocus() {
this.setLayout(new BorderLayout());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Vector<String> values = new Vector<>();
values.add("a");
values.add("b");
values.add("c");
values.add("d");
values.add("e");
values.add("f");
values.add("g");
values.add("h");
values.add("i");
values.add("j");
JComboBox<String> comboBox = new JComboBox<>(values);
JScrollPane scrollPane = new JScrollPane(comboBox);
this.add(scrollPane, BorderLayout.NORTH);
CustomTextField customTextField = new CustomTextField();
this.add(customTextField, BorderLayout.CENTER);
pack();
setVisible(true);
}
class CustomTextField extends JTextField implements FocusListener {
private CustomPopup customPopup = new CustomPopup();
public CustomTextField() {
this.addFocusListener(this);
this.addKeyListener(new KeyAdapter() {
#Override
public void keyPressed(KeyEvent e) {
System.out.println("printing...");
setPopupSize();
setPosition();
customPopup.setVisible(true);
if(e.getKeyCode() == KeyEvent.VK_UP) {
if(customPopup.index < customPopup.getListSize())
customPopup.setSelectedIndex(customPopup.index--);
}
else if(e.getKeyCode() == KeyEvent.VK_DOWN){
if(customPopup.index >= 0)
customPopup.setSelectedIndex(customPopup.index++);
}
}
});
}
public void setPopupSize() {
customPopup.setPopupSize(new Dimension(this.getWidth(), 110));
}
public void setPosition() {
customPopup.setLocation(this.getLocation().x, this.getLocation().y);
}
#Override
public void focusGained(FocusEvent e) {
}
#Override
public void focusLost(FocusEvent e) {
customPopup.setVisible(false);
}
class CustomPopup extends JPopupMenu {
String[] values = new String[]{"Value1", "Value2", "Value3", "Value4", "Value5", "Value6", "Value7",
"Value8","Value9", "Value10", "Value11", "Value12", "Value13", "Value14", "Value15", "Value16",};
JList<String> list = new JList<>(values);
JScrollPane scrollPane = new JScrollPane(list);
public int index = 0;
public CustomPopup() {
this.setLayout(new GridLayout(0,1));
this.add(scrollPane);
pack();
}
public void setSelectedIndex(int index) {
list.setSelectedIndex(index);
}
public int getListSize() {
return values.length;
}
}
}
}
in the JComboBox the scrollpane updates its position so the currently selected item always is visible. But that does not work with my component and I don´t know how to set that.
list.setSelectedIndex(index);
list.ensureIndexIsVisible(index); // added
Also, do not use a KeyListener. Swing was designed to be used with Key Bindings. Read thw section from the Swing tutorial on How to Use Key Bindings for more information.
Related
I have a small text editor that I made in Java Swing with JTextArea.
I want to implement the following:
When the user presses Command+Backspace I want to remove all the text from the beginning of the line up to the cursor. How to implement this? I tried using KeyListeners but it doesn't work.
For example (before user presses Command+Backspace) ...
Result (after user presses Command+Backspace) ...
My code (Not 100% exact compared to the image):
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class Main{
static JFrame frame = new JFrame();
static JTextArea textArea = new JTextArea();
static JScrollPane scrollPane = new JScrollPane(textArea);
public static void main(String[] args) throws BadLocationException {
frame.setTitle("Untitled");
addComponentsToFrame();
textArea.addKeyListener(new KeyListener(){
#Override
public void keyTyped(KeyEvent e) {
if(e.getKeyCode() == (Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx() | KeyEvent.VK_BACK_SPACE)){
System.out.println("Delete"); //Placeholder
}
}
#Override
public void keyPressed(KeyEvent e) {}
#Override
public void keyReleased(KeyEvent e) {}
});
}
public static void addComponentsToFrame(){
scrollPane.setAutoscrolls(true);
frame.add(scrollPane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
For now when I have placed a print Statement as a place holder, since I don't know how to delete all the words from the beginning of the line up to the cursor (i.e. the logic).
Credits: #Abra
Solution:
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.text.BadLocationException;
import java.awt.Toolkit;
public class TestSamplePrograms {
private JTextArea textarea;
private void buildAndShowGui() {
JFrame frame = new JFrame("Untitled");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(createTextArea(), BorderLayout.CENTER);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
private JScrollPane createTextArea() {
textarea = new JTextArea(20, 60);
InputMap im = textarea.getInputMap();
KeyStroke ks = KeyStroke.getKeyStroke(KeyEvent.VK_BACK_SPACE, Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx());
im.put(ks, "del2EoL");
ActionMap am = textarea.getActionMap();
am.put("del2EoL", new Delete2EOL());
JScrollPane pane = new JScrollPane(textarea);
return pane;
}
#SuppressWarnings("serial")
private class Delete2EOL extends AbstractAction {
#Override
public void actionPerformed(ActionEvent e) {
int caretOffset = textarea.getCaretPosition();
int lineNumber = 0;
try {
lineNumber = textarea.getLineOfOffset(caretOffset);
int startOffset = textarea.getLineStartOffset(lineNumber);
int endOffset = textarea.getLineEndOffset(lineNumber);
textarea.replaceRange("", startOffset, endOffset);
} catch (BadLocationException ex) {
throw new RuntimeException(ex);
}
}
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> new TestSamplePrograms().buildAndShowGui());
}
}
I have a small text editor that I made in Java Swing with JTextArea.
I want to implement the following:
When the user presses Command+Backspace I want to remove all the text from the beginning of the line up to the cursor. How to implement this? I tried using KeyListeners but it doesn't work.
For example (before user presses Command+Backspace) ...
Result (after user presses Command+Backspace) ...
My code (Not 100% exact compared to the image):
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class Main{
static JFrame frame = new JFrame();
static JTextArea textArea = new JTextArea();
static JScrollPane scrollPane = new JScrollPane(textArea);
public static void main(String[] args) throws BadLocationException {
frame.setTitle("Untitled");
addComponentsToFrame();
textArea.addKeyListener(new KeyListener(){
#Override
public void keyTyped(KeyEvent e) {
if(e.getKeyCode() == (Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx() | KeyEvent.VK_BACK_SPACE)){
System.out.println("Delete"); //Placeholder
}
}
#Override
public void keyPressed(KeyEvent e) {}
#Override
public void keyReleased(KeyEvent e) {}
});
}
public static void addComponentsToFrame(){
scrollPane.setAutoscrolls(true);
frame.add(scrollPane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
For now when I have placed a print Statement as a place holder, since I don't know how to delete all the words from the beginning of the line up to the cursor (i.e. the logic).
Credits: #Abra
Solution:
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.text.BadLocationException;
import java.awt.Toolkit;
public class TestSamplePrograms {
private JTextArea textarea;
private void buildAndShowGui() {
JFrame frame = new JFrame("Untitled");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(createTextArea(), BorderLayout.CENTER);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
private JScrollPane createTextArea() {
textarea = new JTextArea(20, 60);
InputMap im = textarea.getInputMap();
KeyStroke ks = KeyStroke.getKeyStroke(KeyEvent.VK_BACK_SPACE, Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx());
im.put(ks, "del2EoL");
ActionMap am = textarea.getActionMap();
am.put("del2EoL", new Delete2EOL());
JScrollPane pane = new JScrollPane(textarea);
return pane;
}
#SuppressWarnings("serial")
private class Delete2EOL extends AbstractAction {
#Override
public void actionPerformed(ActionEvent e) {
int caretOffset = textarea.getCaretPosition();
int lineNumber = 0;
try {
lineNumber = textarea.getLineOfOffset(caretOffset);
int startOffset = textarea.getLineStartOffset(lineNumber);
int endOffset = textarea.getLineEndOffset(lineNumber);
textarea.replaceRange("", startOffset, endOffset);
} catch (BadLocationException ex) {
throw new RuntimeException(ex);
}
}
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> new TestSamplePrograms().buildAndShowGui());
}
}
Try to use some "dark side" features of Swing and got problem when I try to populate the popup of a combo-box with some components. Here is my SSCCE:
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DateFormatSymbols;
import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import javax.swing.plaf.basic.ComboPopup;
public class ComboBoxTryout extends JComboBox {
private JPanel panel;
public ComboBoxTryout() {
initPanel();
}
private void initPanel() {
panel = new JPanel(new GridLayout(7, 1, 5, 5));
panel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
DateFormatSymbols symbols = new DateFormatSymbols();
for (String s : symbols.getWeekdays()) {
if (s != null && !s.trim().isEmpty()) {
panel.add(createCheckBox(s));
}
}
setPopupComponent(this, panel);
}
private JCheckBox createCheckBox(String text) {
final JCheckBox cb = new JCheckBox(text);
cb.setHorizontalAlignment(SwingConstants.LEADING);
cb.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
StringBuilder b = new StringBuilder();
for (Component c : panel.getComponents()) {
if (c instanceof JCheckBox && ((JCheckBox) c).isSelected()) {
if (b.length() > 0) {
b.append(", ");
}
b.append(((JCheckBox) c).getText().substring(0, 3));
}
}
getModel().setSelectedItem(b.toString());
}
});
return cb;
}
/**
* Sets the custom component as popup component for the combo-box.
*
* #param combo combo-box to get new popup component.
* #param comp new popup component.
*/
public static void setPopupComponent(JComboBox<?> combo, Component comp) {
final ComboPopup popup = (ComboPopup) combo.getUI().getAccessibleChild(combo, 0);
if (popup instanceof Container) {
Container c = (Container) popup;
c.removeAll();
c.setLayout(new GridLayout(1, 1));
c.add(comp);
c.setPreferredSize(comp.getPreferredSize());
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frm = new JFrame("Test");
frm.add(new ComboBoxTryout(), BorderLayout.NORTH);
frm.setSize(250, 600);
frm.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frm.setLocationRelativeTo(null);
frm.setVisible(true);
}
});
}
}
I can open the combo-box but when I click a check-box in the popup the combo-box goes closed and check-box is still not selected. But, when I change the line
frm.add(new ComboBoxTryout(), BorderLayout.NORTH);
to
frm.add(new ComboBoxTryout(), BorderLayout.SOUTH);
all works fine: I can change state of check-boxes and popup is still visible! Any suggestions, how to get it working for BorderLayout.NORTH?
The following doesn't use a regular JComboBox, but rather mimics one to give you more control.
This example is inspired from Creating Pop-Up Components and from your code.
It uses a Popup component and listeners on the button and on the textfield (textfield + button to look like a combobox, this part is not visually optimized in this example) to manage the popup hiding/showing.
import java.awt.Component;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.text.DateFormatSymbols;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.Popup;
import javax.swing.PopupFactory;
import javax.swing.SwingConstants;
public class ButtonPopupSample {
private final JTextField tField;
private final JButton start;
private final JPanel panel;
private boolean popping = false;
private Popup popup;
ButtonPopupSample() {
panel = new JPanel(new GridLayout(7, 1, 5, 5));
panel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
DateFormatSymbols symbols = new DateFormatSymbols();
for (String s : symbols.getWeekdays()) {
if (s != null && !s.trim().isEmpty()) {
panel.add(createCheckBox(s));
}
}
JFrame frame = new JFrame("Button Popup Sample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
tField = new JTextField(20);
tField.setEditable(false);
start = new JButton("Pop");
ActionListener actionListener = new ActionListener() {
#Override
public void actionPerformed(final ActionEvent e) {
popOrNot();
}
};
start.addActionListener(actionListener);
tField.addMouseListener(new MouseAdapter() {
#Override
public void mousePressed(final MouseEvent me) {
popOrNot();
}
});
JPanel contPan = new JPanel();
contPan.add(tField);
contPan.add(start);
frame.setContentPane(contPan);
frame.setSize(350, 250);
frame.setVisible(true);
}
private JCheckBox createCheckBox(final String text) {
final JCheckBox cb = new JCheckBox(text);
cb.setHorizontalAlignment(SwingConstants.LEADING);
cb.addActionListener(new ActionListener() {
#Override
public void actionPerformed(final ActionEvent e) {
StringBuilder b = new StringBuilder();
for (Component c : panel.getComponents()) {
if (c instanceof JCheckBox && ((JCheckBox) c).isSelected()) {
if (b.length() > 0) {
b.append(", ");
}
b.append(((JCheckBox) c).getText().substring(0, 3));
}
}
tField.setText(b.toString());
}
});
return cb;
}
private void popOrNot() {
if (popping) {
popup.hide();
} else {
PopupFactory factory = PopupFactory.getSharedInstance();
Point location = tField.getLocationOnScreen();
popup = factory.getPopup(tField, panel, location.x, location.y + tField.getHeight());
popup.show();
}
popping = !popping;
}
public static void main(final String args[]) {
new ButtonPopupSample();
}
}
Solution found. A strange focus change event provides the above described problem. So processing of this event must be prevented.
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.text.DateFormatSymbols;
import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import javax.swing.plaf.basic.ComboPopup;
#SuppressWarnings("serial")
public class ComboBoxTryout extends JComboBox {
private JPanel panel;
private boolean avoidFocusChange;
/**
*
*/
public ComboBoxTryout() {
initPanel();
}
private void initPanel() {
panel = new JPanel(new GridLayout(7, 1, 5, 5));
panel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
DateFormatSymbols symbols = new DateFormatSymbols();
for (String s : symbols.getWeekdays()) {
if (s != null && !s.trim().isEmpty()) {
panel.add(createCheckBox(s));
}
}
setPopupComponent(this, panel);
}
#Override
protected void processFocusEvent(FocusEvent e) {
if (avoidFocusChange && FocusEvent.FOCUS_LOST == e.getID() && panel.isAncestorOf(e.getOppositeComponent())) {
System.out.println(e); // skip it
} else {
super.processFocusEvent(e);
}
avoidFocusChange = false;
}
private JCheckBox createCheckBox(String text) {
final JCheckBox cb = new JCheckBox(text);
cb.setHorizontalAlignment(SwingConstants.LEADING);
cb.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
StringBuilder b = new StringBuilder();
for (Component c : panel.getComponents()) {
if (c instanceof JCheckBox && ((JCheckBox) c).isSelected()) {
if (b.length() > 0) {
b.append(", ");
}
b.append(((JCheckBox) c).getText().substring(0, 3));
}
}
getModel().setSelectedItem(b.toString());
}
});
cb.addMouseListener(new MouseAdapter() {
#Override
public void mousePressed(MouseEvent e) {
avoidFocusChange = SwingUtilities.isLeftMouseButton(e);
}
});
return cb;
}
/**
* Sets the custom component as popup component for the combo-box.
*
* #param combo combo-box to get new popup component.
* #param comp new popup component.
*/
public static void setPopupComponent(JComboBox<?> combo, Component comp) {
final ComboPopup popup = (ComboPopup) combo.getUI().getAccessibleChild(combo, 0);
if (popup instanceof Container) {
Container c = (Container) popup;
c.removeAll();
c.setLayout(new GridLayout(1, 1));
c.add(comp);
Dimension dim = comp.getPreferredSize();
dim.width += 10; // need 10 px more width
c.setPreferredSize(dim);
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frm = new JFrame("Test");
frm.add(new ComboBoxTryout(), BorderLayout.NORTH);
frm.setSize(250, 600);
frm.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frm.setLocationRelativeTo(null);
frm.setVisible(true);
}
});
}
}
If somebody finds a better solution, please post it!!!
I would like to have a jtable with 4 columns.
One column must be a combobox.
Other columns are strings.
When i click one time on a cell, i would like the cell become editable with blinking caret/cursor.Also, if i click on the combobox i would like the combox set popup visble.
I have read and tested tutorial "How to Use Tables", and if i make just one click on combobox in the cell, it opens. My first problem is that i don't understand why the code in the tutorial works when we implement abstract table model and not working DefaultTableModel.
My code is :
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import javax.swing.DefaultCellEditor;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
public class JtabletestOK {
public static void main(String[] args) {
JtabletestOK test = new JtabletestOK();
test.go();
}
public void go() {
//create the frame
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//create a table and add it to a scroll pane in a new tab
JTable jTable1 = new JTable()
{
// Place cell in edit mode when it 'gains focus'
public void changeSelection(
int row, int column, boolean toggle, boolean extend)
{
super.changeSelection(row, column, toggle, extend);
if (editCellAt(row, column))
{
Component editor = getEditorComponent();
editor.requestFocusInWindow();
// System.out.println("ffin focus gagne");
if (editor instanceof JTextField) {
JTextField jf = (JTextField) editor;
jf.select(0, jf.toString().length());
}}
}
};
jTable1.setPreferredScrollableViewportSize(new Dimension(800,100));
jTable1.setFillsViewportHeight(true);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(jTable1);
Object columnNames[] = { "DataCombo", "Data 2", "Data 3", "Data 4" };
DefaultTableModel model = new DefaultTableModel(columnNames, 0);
Object rowData[] = { "", "Row1-Column2", "Row1-Column3", "Row1-Column3" };
model.addRow(rowData);
jTable1.setModel(model);
String[] comboBoxArray = {"proem1","veitem2","atem3"};
JComboBox jcb = new JComboBox(comboBoxArray);
jcb.setEditable(true);
TableColumn colCombo = jTable1.getColumnModel().getColumn(0);
colCombo.setCellEditor(new DefaultCellEditor(jcb));
jcb.setEditable(true);
frame.getContentPane().add(scrollPane);
frame.pack();
frame.setVisible(true);
}
The source with abstract model is here :
http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/uiswing/examples/components/TableRenderDemoProject/src/components/TableRenderDemo.java
Just find the problem : When commenting the statement jcb.setEditable(true); , if i do a single click on the comboxcell it opens the cell.
But i don't know why it works better. Also, i would like the combox editable.
How i can have the same behavior for others cells.
Hello again, i have updated the code in order to have
- cells become editable if i click one time on the cell by overriding the method
- combobox become editable if i click one time on the cell by overriding the method
I put my new code here, it may help other :
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.AbstractAction;
import javax.swing.AbstractCellEditor;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.DefaultCellEditor;
import javax.swing.DefaultComboBoxModel;
import javax.swing.InputMap;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableColumn;
import javax.swing.text.JTextComponent;
public class JtabletestOK {
public static void main(String[] args) {
JtabletestOK test = new JtabletestOK();
test.go();
}
public void go() {
//create the frame
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//create a table and add it to a scroll pane in a new tab
JTable jTable1 = new JTable()
{
// Place cell in edit mode when it 'gains focus'
public void changeSelection(
int row, int column, boolean toggle, boolean extend)
{
super.changeSelection(row, column, toggle, extend);
if (column > 0)
{
if (editCellAt(row, column))
{
Component editor = getEditorComponent();
editor.requestFocusInWindow();
// System.out.println("ffin focus gagne");
if (editor instanceof JTextField) {
JTextField jf = (JTextField) editor;
jf.select(0, jf.toString().length());
}}
}
}
};
jTable1.setPreferredScrollableViewportSize(new Dimension(800,100));
jTable1.setFillsViewportHeight(true);
replaceTabByEnter(jTable1);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(jTable1);
Object columnNames[] = { "DataCombo", "Data 2", "Data 3", "Data 4" };
DefaultTableModel model = new DefaultTableModel(columnNames, 0);
Object rowData[] = { "", "Row1-Column2", "Row1-Column3", "Row1-Column3" };
model.addRow(rowData);
jTable1.setModel(model);
String[] comboBoxArray = {"proem1","veitem2","atem3"};
JComboBox jca = new JComboBox(comboBoxArray);
jca.setSelectedItem("");
JTextComponent editor = (JTextComponent) jca.getEditor().getEditorComponent();
jca.addPopupMenuListener(new PopupMenuListener() {
#Override
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
JComponent ja = (JComponent) e.getSource();
}
#Override
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
JComponent ja = (JComponent) e.getSource();
JTable jtb = (JTable) ja.getParent();
jtb.changeSelection(0,1,false,false);
}
#Override
public void popupMenuCanceled(PopupMenuEvent e) {
}
});
editor.addMouseListener(new MouseListener() {
#Override
public void mouseClicked(MouseEvent e) {
System.out.println("Not mouseClicked yet.");
}
#Override
public void mousePressed(MouseEvent e) {
System.out.println("Not mousePressed yet.");
}
#Override
public void mouseReleased(MouseEvent e) {
JComponent ja = (JComponent) e.getSource();
JComponent jcbloc = (JComponent) ja.getParent();
JComboBox jcb = (JComboBox) jcbloc;
jcb.setPopupVisible(true);
System.out.println("Not mouseReleased yet.");
}
#Override
public void mouseEntered(MouseEvent e) {
System.out.println("Not mouseEntered yet.");
}
#Override
public void mouseExited(MouseEvent e) {
System.out.println("Not mouseExited yet.");
}
});
autocompletecombo jcb =new autocompletecombo(jca);
TableColumn colCombo = jTable1.getColumnModel().getColumn(0);
jca.setEditable(true);
comboboxEditor cbe = new comboboxEditor(jca);
colCombo.setCellEditor(cbe);
frame.getContentPane().add(scrollPane);
frame.pack();
frame.setVisible(true);
}
public void replaceTabByEnter(JTable jtane) {
KeyStroke tab = KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0);
KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);
InputMap im = jtane.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
im.put(enter, im.get(tab));
}
class comboboxEditor extends AbstractCellEditor implements TableCellEditor{
JComboBox comboBox;
JTextField jtf;
S11InitialSelection sjcb;
#Override
public Object getCellEditorValue() {
return comboBox.getSelectedItem();
}
public comboboxEditor(JComboBox jcb) {
comboBox = jcb;
jtf.selectAll();
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
comboBox.setSelectedItem(value);
return comboBox;
}
public boolean stopCellEditing() {
fireEditingStopped();
// jt.EditNextCell();
return true;
}
}
}
When i click on the combobox i would like to highlight the text by selecting it.
I don't remember how to get the textfield from the jcombobox in order to use selectAll() method or something like that.
I have find a solution for that :
public void mouseReleased(MouseEvent e) {
JComponent ja = (JComponent) e.getSource();
JComponent jcbloc = (JComponent) ja.getParent();
JComboBox jcb = (JComboBox) jcbloc;
jcb.setPopupVisible(true);
JTextComponent editor = (JTextComponent) jcb.getEditor().getEditorComponent();
editor.setSelectionStart(0);
editor.setSelectionEnd(editor.getText().length());
System.out.println("Not mouseReleased yet.");
}
Thanks for your help.
I have finally find how to solve all my problems. I post all the code.
I hope it will help others. If you find better way to adress the problem, i'm open.
It remains two strange thing but it work as i want, so if somenone as an idea :
If i move the code
if(e.getKeyChar() == KeyEvent.VK_ENTER){
JComponent ja = (JComponent) e.getSource();
JComboBox jcbloc = (JComboBox) ja.getParent();
JTable jtb = (JTable) jcbloc.getParent();
jtb.changeSelection(0,1,false,false);
}
in keyReleased instead of keyPressed, it doesn't work.
When i press enter on basic cell text, the program go to next cell alone. I don't understand how it goes alone to next cell on enter key.
All the code here :
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.AbstractAction;
import javax.swing.AbstractCellEditor;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.DefaultCellEditor;
import javax.swing.DefaultComboBoxModel;
import javax.swing.InputMap;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import javax.swing.plaf.basic.BasicTextUI;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableColumn;
import javax.swing.text.JTextComponent;
public class JtabletestOKStackOver {
public static void main(String[] args) {
JtabletestOKStackOver test = new JtabletestOKStackOver();
test.go();
}
public void go() {
//create the frame
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//create a table and add it to a scroll pane in a new tab
JTable jTable1 = new JTable()
{
// Place cell in edit mode when it 'gains focus'
public void changeSelection(
int row, int column, boolean toggle, boolean extend)
{
super.changeSelection(row, column, toggle, extend);
if (column > -1)
{
if (editCellAt(row, column))
{
Component editor = getEditorComponent();
editor.requestFocusInWindow();
if (editor instanceof JTextField) {
JTextField jf = (JTextField) editor;
jf.select(0, jf.toString().length());
}
if (editor instanceof JComboBox) {
JComboBox jcb = (JComboBox) editor;
jcb.setPopupVisible(true);
JTextComponent editorCombo = (JTextComponent) jcb.getEditor().getEditorComponent();
editorCombo.setSelectionStart(0);
editorCombo.setSelectionEnd(editorCombo.getText().length());
}
}
}
}
};
jTable1.setPreferredScrollableViewportSize(new Dimension(800,100));
jTable1.setFillsViewportHeight(true);
jTable1.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(jTable1);
Object columnNames[] = { "DataCombo", "Data 2", "Data 3", "Data 4" };
DefaultTableModel model = new DefaultTableModel(columnNames, 0);
Object rowData[] = { "", "Row1-Column2", "Row1-Column3", "Row1-Column3" };
model.addRow(rowData);
jTable1.setModel(model);
String[] comboBoxArray = {"proem1","veitem2","atem3"};
JComboBox jca = new JComboBox(comboBoxArray);
jca.setSelectedItem("");
JTextComponent editor = (JTextComponent) jca.getEditor().getEditorComponent();
editor.addKeyListener(new KeyListener() {
#Override
public void keyTyped(KeyEvent e) {
}
#Override
public void keyPressed(KeyEvent e) {
if(e.getKeyChar() == KeyEvent.VK_ENTER){
JComponent ja = (JComponent) e.getSource();
JComboBox jcbloc = (JComboBox) ja.getParent();
JTable jtb = (JTable) jcbloc.getParent();
jtb.changeSelection(0,1,false,false);
}
}
#Override
public void keyReleased(KeyEvent e) {
}
});
editor.addFocusListener(new FocusListener() {
#Override
public void focusGained(FocusEvent e) {
JComponent ja = (JComponent) e.getSource();
JComponent jcbloc = (JComponent) ja.getParent();
JComboBox jcb = (JComboBox) jcbloc;
jcb.setPopupVisible(true);
JTextComponent editor = (JTextComponent) jcb.getEditor().getEditorComponent();
editor.setSelectionStart(0);
editor.setSelectionEnd(editor.getText().length());
}
#Override
public void focusLost(FocusEvent e) {
}
});
TableColumn colCombo = jTable1.getColumnModel().getColumn(0);
jca.setEditable(true);
comboboxEditor cbe = new comboboxEditor(jca);
colCombo.setCellEditor(cbe);
TableColumn colAutre = jTable1.getColumnModel().getColumn(1);
TableColumn colAutre2 = jTable1.getColumnModel().getColumn(2);
TableColumn colAutre3 = jTable1.getColumnModel().getColumn(3);
textCellEditor dce = new textCellEditor(new JTextField());
colAutre.setCellEditor(dce);
colAutre2.setCellEditor(dce);
colAutre3.setCellEditor(dce);
frame.getContentPane().add(scrollPane);
frame.pack();
frame.setVisible(true);
}
class comboboxEditor extends AbstractCellEditor implements TableCellEditor{
JComboBox comboBox;
public comboboxEditor(JComboBox jcb) {
comboBox = jcb;
}
public Object getCellEditorValue() {
return comboBox.getSelectedItem();
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
comboBox.setSelectedItem(value);
return comboBox;
}
public boolean stopCellEditing() {
fireEditingStopped();
return true;
}
}
class textCellEditor extends AbstractCellEditor implements TableCellEditor{
JTextField jtextfield;
public textCellEditor(JTextField jtf) {
jtextfield = jtf;
}
public Object getCellEditorValue() {
return jtextfield.getText();
}
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
if (isSelected) {
// cell (and perhaps other cells) are selected
}
if (value== null)
{
value="";
}
value = value.toString();
if (value instanceof Integer) {
value = value.toString();
}
jtextfield.setText((String) value);
// Return the configured component
return jtextfield;
}
public boolean stopCellEditing() {
fireEditingStopped();
return true;
}
}
}
Thanks for your help.
Don't use an ActionListener on the combo box. The "popup" will be displayed by the editor when you click on the cell.
My first problem is that i don't understand why the code in the tutorial works when we implement abstract table model and not working DefaultTableModel.
Editing is controlled by the isCellEditable(...) method of the TableModel. When you click on a cell that is editable the JTable will use the appropriate editor. If the editor is a combo box, then the popup will be displayed when the cell is clicked.
Just find the problem : When commenting the statement jcb.setEditable(true); , if i do a single click on the comboxcell it opens the cell. But i don't know why it works better
When you click on a cell I believe the MouseEvent is forwarded to the editor (ie the combo box). Since the combo box is editable the MouseEvent goes to the text field, so focus remains of the text field and the popup is not displayed. Try this with a normal combo box, not displayed in a JTable so see the same behaviour.
I don't know why your code with AbstractTableModel works (because I cannot see it). But I can help you to make your example working.
jcb.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
System.out.println("test");
final JComboBox j= (JComboBox)evt.getSource();
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
if (j.isDisplayable()) j.setPopupVisible(true);
}
});
}});
I have created a JButton class that recieving Action, the JButton class includes keystrokes & mouse listener so i can use the same class in multiple frames as needed.
My problems is that:
JButton not getting the focus when pressing the key, but it doing the action.
i need to make a new background or something that tell the user that the button did the action.
Any ideas??
Here is my code:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.KeyStroke;
import javax.swing.SwingConstants;
import javax.swing.border.LineBorder;
import swtdesigner.SwingResourceManager;
public class IButtonSave extends JButton{
private static final long serialVersionUID = 1L;
private Action action = null;
public IButtonSave() {
super();
setFocusPainted(true);
setFocusable(true);
try {
jbInit();
} catch (Throwable e) {
e.printStackTrace();
}
}
private void jbInit() throws Exception {
setMargin(new Insets(0, 0, 0, 0));
setBorder(new LineBorder(Color.black, 1, true));
setIconTextGap(0);
setHorizontalTextPosition(SwingConstants.CENTER);
setVerticalTextPosition(SwingConstants.TOP);
setPreferredSize(new Dimension(50, 43));
setMinimumSize(new Dimension(50, 43));
setMaximumSize(new Dimension(50, 43));
addMouseListener(new ThisMouseListener());
setVerifyInputWhenFocusTarget(true);
}
public void setAction(Action a){
action = a;
KeyStroke ks = KeyStroke.getKeyStroke(KeyEvent.VK_F1,0,true);
KeyStroke ks2 = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0);
getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(ks, "Save");
getInputMap(JComponent.WHEN_FOCUSED).put(ks2, "Save");
getActionMap().put("Save", a);
setText("Save [F1]");
setIcon(SwingResourceManager.getIcon(SwingResourceManager.class, "/images/small/save.png"));
setToolTipText("[F1]");
}
private class ThisMouseListener extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
this_mouseClicked(e);
}
}
protected void this_mouseClicked(MouseEvent e) {
if(e.getClickCount() >= 1){
action.actionPerformed(null);
}
}
}
Why extend JButton class when you can simply add KeyBindings to its instance?
Not to sure what you want but this works fine for me:
Basically a JButton which can be activated by mouse click, or pressing F1 (as long as focus is in window and if pressed will shift focus to JButton) or ENTER (only when in focus of JButton).
When the AbstractAction is called it will call requestFocusInWindow() on JButton (thus pressing F1 will make button gain focus which is what I think you wanted):
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
public class Test {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JButton btn = new JButton("Button");
AbstractAction aa = new AbstractAction() {
#Override
public void actionPerformed(ActionEvent ae) {
System.out.println("Here");
btn.requestFocusInWindow();//request that the button has focus
}
};
//so button can be pressed using F1 and ENTER
btn.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "Enter");
btn.getActionMap().put("Enter", aa);
btn.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0), "F1");
btn.getActionMap().put("F1", aa);
btn.addActionListener(aa);//so button can be clicked
JTextField tf = new JTextField("added to show ENTER wont work unless button in focus");
frame.add(tf);
frame.add(btn, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
});
}
}
UPADTE:
alternatively as #GuillaumePolet suggested (+1 to him) override processKeyBinding of JButton and check for appropriate key and than call the method:
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
public class Test {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
final JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JButton btn = new JButton("Button") {
#Override
protected boolean processKeyBinding(KeyStroke ks, KeyEvent ke, int i, boolean bln) {
boolean b = super.processKeyBinding(ks, ke, i, bln);
if (b && ks.getKeyCode() == KeyEvent.VK_F1) {
requestFocusInWindow();
}
return b;
}
};
AbstractAction aa = new AbstractAction() {
#Override
public void actionPerformed(ActionEvent ae) {
System.out.println("Here");
}
};
//so button can be pressed using F1 and ENTER
btn.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "Enter");
btn.getActionMap().put("Enter", aa);
btn.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0), "F1");
btn.getActionMap().put("F1", aa);
btn.addActionListener(aa);//so button can be clicked
JTextField tf = new JTextField("added to show ENTER wont work unless button in focus");
frame.add(tf);
frame.add(btn, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
});
}
}
Not sure this is the best way to do it, but it works decently enough and if it is not the best way, you get a free SSCCE out of this answer.
I override processKeyBindings() and if it returns true then I grab the focus to indicate that the action has been performed. If you want to do something else you just need to modify the code there.
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
public class IButtonSave extends JButton {
private static final long serialVersionUID = 1L;
public IButtonSave() {
super();
setFocusPainted(true);
setFocusable(true);
}
#Override
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed) {
boolean processKeyBinding = super.processKeyBinding(ks, e, condition, pressed);
if (processKeyBinding) {
requestFocusInWindow();
}
return processKeyBinding;
}
#Override
public void setAction(Action a) {
super.setAction(a);
KeyStroke ks = KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0, true);
KeyStroke ks2 = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);
getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(ks, "Save");
getInputMap(JComponent.WHEN_FOCUSED).put(ks2, "Save");
getActionMap().put("Save", a);
setText("Save [F1]");
setToolTipText("[F1]");
}
protected void initUI() {
JFrame frame = new JFrame(IButtonSave.class.getSimpleName());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTextArea textarea = new JTextArea(5, 30);
JPanel buttonPanel = new JPanel();
AbstractAction someAction = new AbstractAction() {
#Override
public void actionPerformed(ActionEvent e) {
System.err.println("Action performed");
}
};
IButtonSave button = new IButtonSave();
button.setAction(someAction);
buttonPanel.add(button);
frame.add(new JScrollPane(textarea));
frame.add(buttonPanel, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new IButtonSave().initUI();
}
});
}
}