JTable Document Listener for JTextField editor

hello, how can I tell if removeUpdate in DocumentListener has been triggered by the user performing a delete in a JTextField or by the user cancelling a previous edit?
example table
| abc | def | ghi |<- user clicks in this cell which puts it in editmode
| jkl | mno | pqr |<- user then clicks here which triggers removeUpdate for previous cell but how do I know this?
Regards,
b

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Multiple Buttons in JTable Headers: Listening for Mouse Clicks

I am writing a table which has table headers that contain multiple buttons. For the header cells, I am using a custom cell renderer which extends JPanel. A JLabel and JButtons are added to the JPanel.
Unfortunately, the buttons do not do anything. (Clicking in the area of a button doesn't appear to have any effect; the button doesn't appear to be pressed.)
Looking through the archives, I read a suggestion that the way to solve this problem is to listen for mouse clicks on the table header and then determine whether the mouse clicks fall in the area of the button. However, I cannot seem to get coordinates for the button that match the coordinates I see for mouse clicks.
The coordinates for mouse clicks seem to be relative to the top left corner of the table header (which would match the specification for mouse listeners). I haven't figured out how to get corresponding coordinates for the button. The coordinates returned by JButton.getBounds() seem to be relative to the top left corner of the panel. I hoped I could just add those to the coordinates for the panel to get coordinates relative to the table header, but JPanel.getBounds() gives me negative numbers for x and y (?!?). JPanel.getLocation() gives me the same negative numbers. When I tried JPanel.getLocationOnScreen(), I get an IllegalComponentStateException:
Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
Can someone tell me how to get coordinates for the button on the JTableHeader? Or is there an easier way to do this (some way to make the buttons actually work so I can just use an ActionListener like I normally would)?
Here is relevant code:
public class MyTableHeaderRenderer extends JPanel implements TableCellRenderer {
public MyTableHeaderRenderer() {
setOpaque(true);
// ... set colors...
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setLayout(new FlowLayout(FlowLayout.LEADING));
setAlignmentY(Component.CENTER_ALIGNMENT);
public Component getTableCellRendererComponent(JTable table,
                                                 Object value,
                                                 boolean isSelected,
                                                 boolean hasFocus,
                                                 int row,
                                                 int column){
if (table != null){
    removeAll();
    String valueString = (value == null) ? "" : value.toString();
    add(new JLabel(valueString));
    Insets zeroInsets = new Insets(0, 0, 0, 0);
    final JButton sortAscendingButton = new JButton("1");
    sortAscendingButton.setMargin(zeroInsets);
    table.getTableHeader().addMouseListener(new MouseAdapter(){
      public void mouseClicked(MouseEvent e) {
        Rectangle buttonBounds = sortAscendingButton.getBounds();
        Rectangle panelBounds = MyTableHeaderRenderer.this.getBounds();
        System.out.println(Revising based on (" + panelBounds.x + ", "
                           + panelBounds.y + ")...");
        buttonBounds.translate(panelBounds.x, panelBounds.y);
        if (buttonBounds.contains(e.getX(), e.getY())){ // The click was on this button.
          System.out.println("Calling sortAscending...");
          ((MyTableModel) table.getModel()).sortAscending(column);
        else{
          System.out.println("(" + e.getX() + ", " + e.getY() + ") is not within "
                             + sortAscendingButton.getBounds() + " [ revised to " + buttonBounds + "].");
    sortAscendingButton.setEnabled(true);
    add(sortAscendingButton);
    JButton button2 = new JButton("2");
    button2.setMargin(zeroInsets);
    add(button2);
    //etc
return this;
}

I found a solution to this: It's the getHeaderRect method in class JTableHeader.
table.getTableHeader().addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e) {
    Rectangle panelBounds = table.getTableHeader().getHeaderRect(column);
    Rectangle buttonBounds = sortAscendingButton.getBounds();
    buttonBounds.translate(panelBounds.x, panelBounds.y);
    if (buttonBounds.contains(e.getX(), e.getY()) && processedEvents.add(e)){ // The click was on this button.
      ((MyTableModel) table.getModel()).sortAscending(column);
});

Document Listener for JTextArea in JTable

I am trying to implement a DocumentListener for JTextArea in JTable, but its not happening.
Can someone tell me what's wrong. SSCCE below.
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.text.Document;
public class MyTable_TextArea extends JTable {
     private DefaultTableModel defaultTableModel;
     private Object[][] dataArray;
     private Object[] columnNameArray;
     public final int TEXT_COLUMN = 0;
     // column headers
     public static final String TEXT_COLUMN_HEADER = "Text";
     // text area
     TextFieldRenderer3 textFieldRenderer3;
      * constructor
      * @param variableNameArray
      * @param columnNameArray
     public MyTable_TextArea(Object[][] variableNameArray, Object[] columnNameArray) {
          this.dataArray = variableNameArray;
          this.columnNameArray = columnNameArray;
          defaultTableModel = new DefaultTableModel(variableNameArray, columnNameArray);
          this.setModel(defaultTableModel)     ;
          // text field
        textFieldRenderer3 = new TextFieldRenderer3();
          MyDocumentListener myListener = new MyDocumentListener();
          textFieldRenderer3.getDocument().addDocumentListener(myListener);
        TableColumn modelColumn = this.getColumnModel().getColumn(TEXT_COLUMN);
          modelColumn.setCellRenderer(textFieldRenderer3);
      * nested class
     class MyDocumentListener implements DocumentListener {
         String newline = "\n";
         public void insertUpdate(DocumentEvent e) {
              System.out.println ("insert update");
             updateLog(e, "inserted into");
         public void removeUpdate(DocumentEvent e) {
              System.out.println ("remove update");
             updateLog(e, "removed from");
         public void changedUpdate(DocumentEvent e) {
             //Plain text components do not fire these events
         public void updateLog(DocumentEvent e, String action) {
             Document doc = (Document)e.getDocument();
             int changeLength = e.getLength();
             textFieldRenderer3.append(
                 changeLength + " character" +
                 ((changeLength == 1) ? " " : "s ") +
                 action + doc.getProperty("name") + "." + newline +
                 " Text length = " + doc.getLength() + newline);
      * @param args
     public static void main(String[] args) {
          try{
               UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
          catch (Exception e){
               e.printStackTrace();
         String[] columnNameArray = {
                   TEXT_COLUMN_HEADER,
                   "1",
                   "2",
          Object[][] dataArray = {      {"", "", ""},      };
          final MyTable_TextArea panel = new MyTable_TextArea(dataArray, columnNameArray);
          final JFrame frame = new JFrame();
          frame.getContentPane().add(new JScrollPane(panel));
          frame.setTitle("My Table");
          frame.setPreferredSize(new Dimension(500, 200));
          frame.addWindowListener(new WindowAdapter(){
               @Override
               public void windowClosing(WindowEvent e) {
          frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          frame.setLocation(300, 200);
          frame.pack();
          frame.setVisible(true);
class TextFieldRenderer3 extends JTextArea implements TableCellRenderer {
     Icon defaultIcon;
     boolean isChecked = false;
     public TextFieldRenderer3() {
          System.out.println ("TextFieldRenderer()");
          setToolTipText("Double click to type");
     @Override
     public Component getTableCellRendererComponent(JTable table,
               Object value,
               boolean isSelected,
               boolean hasFocus,
               int row,
               int column) {
          System.out.println ("TextFieldRenderer.getTableCellRendererComponent() row/column: " + row + "\t"+ column);
          return this;
}

I've implemented in the cell editor. I don't see how to get the value being typed (and nothing appears in the text area)
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.EventObject;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.event.CellEditorListener;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.text.Document;
public class MyTable_TextArea extends JTable {
     private DefaultTableModel defaultTableModel;
     private Object[][] dataArray;
     private Object[] columnNameArray;
     public final int TEXT_COLUMN = 0;
     // column headers
     public static final String TEXT_COLUMN_HEADER = "Text";
     // text area
     TextAreaEditor textAreaEditor;
      * constructor
      * @param variableNameArray
      * @param columnNameArray
     public MyTable_TextArea(Object[][] variableNameArray, Object[] columnNameArray) {
          this.dataArray = variableNameArray;
          this.columnNameArray = columnNameArray;
          defaultTableModel = new DefaultTableModel(variableNameArray, columnNameArray);
          this.setModel(defaultTableModel)     ;
          // text field
        textAreaEditor = new TextAreaEditor();
          MyDocumentListener myListener = new MyDocumentListener();
          textAreaEditor.getDocument().addDocumentListener(myListener);
        TableColumn modelColumn = this.getColumnModel().getColumn(TEXT_COLUMN);
          modelColumn.setCellEditor(textAreaEditor);
      * nested class
     class MyDocumentListener implements DocumentListener {
         String newline = "\n";
         public void insertUpdate(DocumentEvent e) {
              System.out.println ("insert update");
             updateLog(e, "inserted into");
         public void removeUpdate(DocumentEvent e) {
              System.out.println ("remove update");
             updateLog(e, "removed from");
         public void changedUpdate(DocumentEvent e) {
             //Plain text components do not fire these events
         public void updateLog(DocumentEvent e, String action) {
             Document doc = (Document)e.getDocument();
             int changeLength = e.getLength();
             textAreaEditor.append(
                 changeLength + " character" +
                 ((changeLength == 1) ? " " : "s ") +
                 action + doc.getProperty("name") + "." + newline +
                 " Text length = " + doc.getLength() + newline);
      * @param args
     public static void main(String[] args) {
          try{
               UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
          catch (Exception e){
               e.printStackTrace();
         String[] columnNameArray = {
                   TEXT_COLUMN_HEADER,
                   "1",
                   "2",
          Object[][] dataArray = {      {"", "", ""},      };
          final MyTable_TextArea panel = new MyTable_TextArea(dataArray, columnNameArray);
          final JFrame frame = new JFrame();
          frame.getContentPane().add(new JScrollPane(panel));
          frame.setTitle("My Table");
          frame.setPreferredSize(new Dimension(500, 200));
          frame.addWindowListener(new WindowAdapter(){
               @Override
               public void windowClosing(WindowEvent e) {
          frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          frame.setLocation(300, 200);
          frame.pack();
          frame.setVisible(true);
class TextAreaEditor extends JTextArea implements TableCellEditor {
     Icon defaultIcon;
     boolean isChecked = false;
     public TextAreaEditor() {
          System.out.println ("TextAreaEditor()");
          setToolTipText("Double click to type");
     @Override
     public Component getTableCellEditorComponent(JTable arg0,
               Object arg1,
               boolean arg2,
               int arg3,
               int arg4) {
          System.out.println ("TextAreaEditor() arg1: " + arg1 + "arg2: " + arg2 + " arg3: " + arg3 + " arg4: " + arg4 );
          return null;
     @Override
     public void addCellEditorListener(CellEditorListener arg0) {
          System.out.println ("TextAreaEditor().addCellEditorListener");
     @Override
     public void cancelCellEditing() {
          System.out.println ("TextAreaEditor().cancelCellEditing");
     @Override
     public Object getCellEditorValue() {
          System.out.println ("TextAreaEditor().getCellEditorValue");
          return null;
     @Override
     public boolean isCellEditable(EventObject arg0) {
          System.out.println ("TextAreaEditor().isCellEditable");
          return true;
     @Override
     public void removeCellEditorListener(CellEditorListener arg0) {
          System.out.println ("TextAreaEditor().removeCellEditorListener");
     @Override
     public boolean shouldSelectCell(EventObject arg0) {
          System.out.println ("TextAreaEditor().shouldSelectCell");
          return false;
     @Override
     public boolean stopCellEditing() {
          System.out.println ("TextAreaEditor().stopCellEditing");
          return false;
}

JTextfield listening for changes from other class

Hi,
Assuming I have a Jtextfield in one of the class1 extend Jframe,
how do I update the jtextfield so that it could up make accessible by other class and continuously updated to reflect the input for value rom another class2.
In other words very much similar to the observable model view concept
class 1 may be look like
private void initComponents() {
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setEditable(false);
class 2 may be look similar to the following
public void out_1(){
setStop1("N");
for (int i=1;i<100;i++){
class_1.getJTextField1().setText(String.valueOf(i)); // System.out.println(i);
setOuti(i);
setStop1("N");

HI,
I have attempted with the following coding , test 1 the source display generated using Netbeans GUI , t est2 the worker code ,and mybean the bean , so far nothing seems to work .
I have not try the threaded swing concept as I am not familar with the concurrency but i am not sure whether propertylistener will do the job or not
In summary , list of method employed are :
binding the jtextfield1 to a bean,
jtextfield add document listener ,
Coding objective
1. Test 1 defined jtexfield1 and jbutton
2 Jbutton added actionlistener , where upon click,
Execute Test 2 which will assign a series of integer to the bean , own setters & getters, Output is achieved via Test 1 jtextfield1 supposingly to display all the running number from 1 to 99 continuously until the test2 out_1 method finished the execution
Anyone could provide the assistance .
Thank
* Test_1.java
* Created on July 25, 2007, 9:23 PM
package sapcopa;
import java.beans.PropertyChangeListener;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.Document;
import sapcopa.MyBean.*;
public class Test_1 extends javax.swing.JFrame {
/** Creates new form Test_1 */
// private Test_2 t2=new Test_2();
private String input_txt;
public Test_1() {
myBean1=new MyBean();
myBean1.addPropertyChangeListener(new java.beans.PropertyChangeListener(){
public void propertyChange(java.beans.PropertyChangeEvent evt) {
bean_chg(evt);
initComponents();
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
myBean1 = new sapcopa.MyBean();
jTextField1 = new javax.swing.JTextField();
jTextField1.getDocument().addDocumentListener(new MyDocumentListener());
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setEditable(false);
jTextField1.setText(myBean1.getRecord_Process());
jTextField1.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent evt) {
txt1_chg(evt);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
But1(evt);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(19, 19, 19)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 250, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(32, 32, 32)
.addComponent(jButton1)))
.addContainerGap(131, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(21, 21, 21)
.addComponent(jButton1)
.addContainerGap(216, Short.MAX_VALUE))
pack();
}// </editor-fold>//GEN-END:initComponents
private void txt1_chg(java.beans.PropertyChangeEvent evt) {//GEN-FIRST:event_txt1_chg
// TODO add your handling code here:
//myBean1=new MyBean();
try {
jTextField1.setText(myBean1.getRecord_Process());
} catch (Exception e){
e.printStackTrace();
}//GEN-LAST:event_txt1_chg
private void bean_chg(java.beans.PropertyChangeEvent evt){
jTextField1.setText(myBean1.getRecord_Process());
private void But1(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_But1
//getJTextField1().getDocument().addDocumentListener(new MyDocumentListener());
Test_2 t2=new Test_2();
t2.out_1();
try{
System.out.println("Button 1 mybean->"+myBean1.getRecord_Process());
} catch (Exception e){
e.printStackTrace();
// TODO add your handling code here:
}//GEN-LAST:event_But1
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Test_1().setVisible(true);
public javax.swing.JTextField getJTextField1() {
return jTextField1;
public void setJTextField1(javax.swing.JTextField jTextField1) {
this.jTextField1 = jTextField1;
class MyDocumentListener implements DocumentListener {
final String newline = "\n";
public void insertUpdate(DocumentEvent e) {
// updateLog(e, "inserted into");
String vstr=myBean1.getRecord_Process().toString();
jTextField1.setText(vstr);
public void removeUpdate(DocumentEvent e) {
//updateLog(e, "removed from");
String vstr=myBean1.getRecord_Process().toString();
jTextField1.setText(vstr);
public void changedUpdate(DocumentEvent e) {
//Plain text components don't fire these events.
String vstr=myBean1.getRecord_Process().toString();
jTextField1.setText(vstr);
public void updateLog(DocumentEvent e, String action) {
Document doc = (Document)e.getDocument();
int changeLength = e.getLength();
// jTextField1.setText(String.valueOf(changeLength));
String vstr=myBean1.getRecord_Process().toString();
jTextField1.setText(vstr);
public String getInput_txt() {
return input_txt;
public void setInput_txt(String input_txt) {
this.input_txt = input_txt;
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JTextField jTextField1;
private sapcopa.MyBean myBean1;
// End of variables declaration//GEN-END:variables
* Test_2.java
* Created on July 25, 2007, 9:26 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package sapcopa;
import sapcopa.MyBean.*;
public class Test_2 {
private Test_1 t1=new Test_1();
private int outi;
private String stop1;
MyBean mybean;
/** Creates a new instance of Test_2 */
public Test_2() {
public void out_1(){
setStop1("N");
mybean=new MyBean();
for (int i=1;i<100;i++){
mybean.setRecord_Process(String.valueOf(i));
setOuti(i);
setStop1("N");
setStop1("Y");
public int getOuti() {
return outi;
public void setOuti(int outi) {
this.outi = outi;
public String getStop1() {
return stop1;
public void setStop1(String stop1) {
this.stop1 = stop1;
* MyBean.java
* Created on July 24, 2007, 12:00 AM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package sapcopa;
import javax.swing.JTextField;
public class MyBean {
/** Creates a new instance of MyBean */
public MyBean() {
* Holds value of property record_Process.
private JTextField txt_rec_process;
private String record_Process;
* Utility field used by bound properties.
private java.beans.PropertyChangeSupport propertyChangeSupport = new java.beans.PropertyChangeSupport(this);
* Adds a PropertyChangeListener to the listener list.
* @param l The listener to add.
public void addPropertyChangeListener(java.beans.PropertyChangeListener l) {
propertyChangeSupport.addPropertyChangeListener(l);
* Removes a PropertyChangeListener from the listener list.
* @param l The listener to remove.
public void removePropertyChangeListener(java.beans.PropertyChangeListener l) {
propertyChangeSupport.removePropertyChangeListener(l);
* Getter for property record_Process.
* @return Value of property record_Process.
public String getRecord_Process() {
return this.record_Process;
* Setter for property record_Process.
* @param record_Process New value of property record_Process.
public void setRecord_Process(String record_Process) {
String oldRecord_Process = this.record_Process;
this.record_Process = record_Process;
propertyChangeSupport.firePropertyChange("record_Process", oldRecord_Process, record_Process);
* Holds value of property rec_Match.
private String rec_Match;
* Getter for property rec_Match.
* @return Value of property rec_Match.
public String getRec_Match() {
return this.rec_Match;
* Setter for property rec_Match.
* @param rec_Match New value of property rec_Match.
public void setRec_Match(String rec_Match) {
String oldRec_Match = this.rec_Match;
this.rec_Match = rec_Match;
propertyChangeSupport.firePropertyChange("rec_Match", oldRec_Match, rec_Match);
public JTextField getTxt_rec_process() {
return txt_rec_process;
public void setTxt_rec_process(JTextField txt_rec_process) {
JTextField oldTxt_rec_process=this.txt_rec_process;
this.txt_rec_process = txt_rec_process;
propertyChangeSupport.firePropertyChange("txt_rec_process", oldTxt_rec_process, txt_rec_process);
}

Listener for custom JTable

I need to know when a user clicks in a certain column in a JTable. This column displays checkboxes. How do i implement a listener for this and where do i put it? I've tried implementing actionlistener with an editor class, but the event never fires.

In the future, Swing related questions should be posted in the Swing forum.
You need to add a TableModelListener to the TableModel. It will notify you when the value of a cell is changed.

"Files" and other tabs not visible for document library after script editor webpart is added

I created a document library and uploaded a few documents to ti. On the ribbon, I could see both "Files" and "Library" tabs. I then added a Script Editor webpart to this page because I needed to run some javascript on this
page. Now, when I go to that document library page (AllItems.aspx) then I don't see the Files and Library tab. My guess is that this is because these tabs are context sensitive so they only appear when Sharepoint knows you're working with a document
library and since now I have both the webpart that shows the document library and the Script editor webpart, that context is not there. If I click somewhere on the page close to the actual list of documents, then the Files and Library tabs reappear since
now Sharepoint knows that I'm working with a document library. Is there any way aroudn this? We don't want to have to ask our customer to click somewhere on the screen in order to get access to these tabs. I'm not sure why Sharepoint would
be confused by the Script editor webpart. It is not visible so when the page is not in edit more, you can't even see that Script editor. So, my question is: is there any way to:
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I also experienced this issue when I wanted to insert some customized text on the same page that had a document library. For example, I created a document library and then on the AllItems.aspx page I inserted a content editor webpart so that I can
show some text at the top. That also caused the Files and Library tabs to disappear.
thanks,

Hi,
I understand Files/Libraray tab disappear after you add web parts to a document library, once you click somewhere in library list, it will appear again.
This is by design. As workaround, please try to use SharePoint Desginer to edit Allitems page of document library instead of using script web part.
https://social.msdn.microsoft.com/Forums/office/en-US/fd1bb098-6425-437c-b3f8-25bf65bcaad3/ribbon-control-disappears-on-sharepoint2013-document-libraries-when-content-editor-web-part-has?forum=sharepointdevelopment
Regards,
Rebecca Tu
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

Mouse motion listener for JTable with JScrollpane

Hi All,
I have added mouse motion listener for JTable which is added in JScrollPane. But if i move the mouse, over the vertical/horizontal scroll bars, mouse motion listener doesn't works.
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Regards,
Tamizhan

I am having one popup window which shows address information. This window contains JTable with JScrollPane and JButton components to show the details. While showing this information window, if the mouse cursor is over popupwindow, it should show the window otherwise it should hide the window after 30 seconds.
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Listen for change in JTextField

I would like to write an event listener to listen for any changes made to a JTextField. Normally I would think that keyListeners would do the trick except that the contents of this field can be altered by the application itself, and I would like to trap those changes too.
Does anyone know of an event listener that listens for any changes made in the text of a JTextField, regardless of how those changes are made?

use DocumentListener
for more info see http://java.sun.com/docs/books/tutorial/uiswing/components/generaltext.html#doclisteners

FocusLost event for JTextField sometimes triggered, sometimes not

Some background.
A column in a table consists of a number of cells.
Each cell can be a JTextField or a JComboBox.
I have written a CellEditor who returns either a JTextField or a JComboBox depending on some conditions.
The JTextField listens for a FocusLost event to update the database.
When I leave the first cell the FocusLost event is always triggered.
For the ther cells the FocusLost event is triggeed every now and then.
In the mean time I have found a simple workaround by placing the update code in method getCellEditorValue() which is called always by the table when moving to the next cell.
I am just curious if someone has an explanation for this inconsistent behaviour of the FocusLost event.
Code is below:
* QuoteProductPropertyValueEditor.java
* Created on May 4, 2005
package tsquote.gui;
* @author johnz
import java.awt.Component;
import java.util.EventObject;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import tsquote.controller.QueryHandler;
import tsquote.exception.FinderException;
import tsquote.gui.control.GenericTableModel;
import tsquote.gui.control.Table;
import tsquote.util.Messager;
public class QuoteProductPropertyValueEditor implements TableCellEditor {
      * We use EvetListenerList, because it is thread-safe
     protected EventListenerList listenerList = new EventListenerList();
     protected ChangeEvent changeEvent = new ChangeEvent(this);
     private List<Component> componentList = new ArrayList();
     private Map<Integer, Integer> indexMap = new HashMap(); // maps row to index
     private Table table;
     private int currentRow;
     private QueryHandler queryHandler = QueryHandler.getInstance();
     public QuoteProductPropertyValueEditor() {
          super();
     public Object getCellEditorValue() {
          Component component = componentList.get(indexMap.get(currentRow));
          if (component instanceof JComboBox) {
               JComboBox comboBox = (JComboBox) component;
               return comboBox.getSelectedItem();
          JTextField textField = (JTextField) component;
          return textField.getText();
     public Component getTableCellEditorComponent(
               JTable jTable,
               Object value,
               boolean isSelected,
               int row,
               int column) {
          final int thisRow = row;
          System.out.println("getTableCellEditorComponent(): thisRow=" + thisRow);
          table = (Table) jTable;
          currentRow = thisRow;
          if (!indexMap.containsKey(thisRow)) {
               System.out.println("Control added: thisRow=" + thisRow);
               indexMap.put(thisRow, componentList.size());
               // This is actually a tsquote.gui.control.Table
               GenericTableModel genericTableModel = table.getGenericTableModel();
               List<Map> list = genericTableModel.getList();
               Map recordMap = list.get(thisRow);
               Boolean hasList = (Boolean) recordMap.get("product_property.has_list");
               if (hasList) {
                    JComboBox comboBox = new JComboBox();
                    componentList.add(comboBox);
                    comboBox.addActionListener(new ActionListener() {
                         public void actionPerformed(ActionEvent event) {
                              fireEditingStopped();
                    for (int i=0; i<=row +1; i++) {
                         comboBox.addItem("Item" + i);
               } else {
                    JTextField textField = new JTextField();
                    componentList.add(textField);
                    textField.addFocusListener(new FocusAdapter() {
                         public void focusLost(FocusEvent e) {
                              System.out.println("textField: thisRow=" + thisRow);
                              JTextField textField = (JTextField) componentList.get(indexMap.get(thisRow));
                              String newValue = textField.getText();
                              fireEditingStopped();
                              updateQuoteProductProperty(thisRow, newValue);
                    String text = (String) recordMap.get("quote_product_property.value");
                    textField.setText(text);
          Component component = componentList.get(indexMap.get(thisRow));
          if (component instanceof JComboBox) {
               JComboBox comboBox = (JComboBox) component;
               if (value == null) {
                    comboBox.setSelectedIndex(0);
               } else {
                    comboBox.setSelectedItem(value);
          } else {
               JTextField textField = (JTextField) component;
               textField.setText((String) value);
          return component;
     private void updateQuoteProductProperty(
               int row,
               String newValue) {
          // Get PK quote_prodcut_property from list
          GenericTableModel genericTableModel = table.getGenericTableModel();
          List<Map> list = genericTableModel.getList();
          Map modelRecordMap = list.get(row);
          String storedValue = (String) modelRecordMap.get("quote_product_property.value");
          // If nothing changed, ready
//          if (storedValue == null) {
//               if (newValue == null) {
//                    return;
//          } else {
//               if (storedValue.equals(newValue)){
//                    return;
          // Update model
          modelRecordMap.put ("quote_product_property.value", newValue);
          Integer quoteProductPropertyID = (Integer) modelRecordMap.get("quote_product_property.quote_product_property_id");
          try {
               queryHandler.setTable("quote_product_property");
               queryHandler.setWhere("quote_product_property_id=?", quoteProductPropertyID);
               Map recordMap = queryHandler.getMap();
               recordMap.put("value", newValue);
               recordMap.get("quote_product_property.value");
               queryHandler.updateRecord("quote_product_property", "quote_product_property_id", recordMap);
          } catch (FinderException fE) {
               Messager.warning("Cannot find record in quote_product_property\n" + fE.getMessage());
     public void addCellEditorListener(CellEditorListener listener) {
          listenerList.add(CellEditorListener.class, listener);
     public void removeCellEditorListener(CellEditorListener listener) {
          listenerList.remove(CellEditorListener.class, listener);
     public void cancelCellEditing() {
          fireEditingCanceled();
     public boolean stopCellEditing() {
          fireEditingStopped();
          return true;
     public boolean isCellEditable(EventObject event) {
          return true;
     public boolean shouldSelectCell(EventObject event) {
          return true;
     protected void fireEditingStopped() {
          CellEditorListener listener;
          Object[] listeners = listenerList.getListenerList();
          for (int i = 0; i < listeners.length; i++) {
               if (listeners[i] == CellEditorListener.class) {
                    listener = (CellEditorListener) listeners[i + 1];
                    listener.editingStopped(changeEvent);
     protected void fireEditingCanceled() {
          CellEditorListener listener;
          Object[] listeners = listenerList.getListenerList();
          for (int i = 0; i < listeners.length; i++) {
               if (listeners[i] == CellEditorListener.class) {
                    listener = (CellEditorListener) listeners[i + 1];
                    listener.editingCanceled(changeEvent);
}

The JTextField listens for a FocusLost event to update the database.I don't recommend using a FocusListener. Wouldn't you get a FocusLost event even if the user cancels any changes made to the cell?
Whenver I want to know if data has changed in the table I use a TableModelListener:
http://forum.java.sun.com/thread.jspa?threadID=527578&messageID=2533071
I'm not very good at writing cell editors so I don't. I just override the getCellEditor method to return an appropriate editor. Here's a simple example:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableComboBoxByRow extends JFrame
     ArrayList editors = new ArrayList(3);
     public TableComboBoxByRow()
          // Create the editors to be used for each row
          String[] items1 = { "Red", "Blue", "Green" };
          JComboBox comboBox1 = new JComboBox( items1 );
          DefaultCellEditor dce1 = new DefaultCellEditor( comboBox1 );
          editors.add( dce1 );
          String[] items2 = { "Circle", "Square", "Triangle" };
          JComboBox comboBox2 = new JComboBox( items2 );
          DefaultCellEditor dce2 = new DefaultCellEditor( comboBox2 );
          editors.add( dce2 );
          String[] items3 = { "Apple", "Orange", "Banana" };
          JComboBox comboBox3 = new JComboBox( items3 );
          DefaultCellEditor dce3 = new DefaultCellEditor( comboBox3 );
          editors.add( dce3 );
          // Create the table with default data
          Object[][] data =
               {"Color", "Red"},
               {"Shape", "Square"},
               {"Fruit", "Banana"},
               {"Plain", "Text"}
          String[] columnNames = {"Type","Value"};
          DefaultTableModel model = new DefaultTableModel(data, columnNames);
          JTable table = new JTable(model)
               // Determine editor to be used by row
               public TableCellEditor getCellEditor(int row, int column)
                    int modelColumn = convertColumnIndexToModel( column );
                    if (modelColumn == 1 && row < 3)
                         return (TableCellEditor)editors.get(row);
                    else
                         return super.getCellEditor(row, column);
          JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
     public static void main(String[] args)
          TableComboBoxByRow frame = new TableComboBoxByRow();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}

How do I listen for changes in a container's components?

I have a JScrollPane that contains a JTextPane. I want any Container that can possibly contain my JScrollPane to be able to listen for changes in the JTextPane's Document.
For example, at the moment I'm using a JTabbedPane to hold a number of my JScrollPanes and I want to alter the tab title when any associated JScrollPane-JTextPane-Document is updated.
Any suggestions on how best to handle this?

I would use a controller object that manages all your gui components (tabs, scrolls, documents, text panes). Your controller object can register as a listener to the appropriate component, and when it changes, update the title of a tab (or do whatever else) as appropriate.
Never put business logic like this stuff inside the actual gui components. Create, layout, etc. all the gui components (and related components like Document) from another controller like object instead. It makes handling the various listener stuff like this much easier. Read up on MVC (model view controller) stuff for more info.
As for the actual mechanics, you could get the document that is used in the JTextPane and register as a DocumentListener. As a document listener, you get notified of all changes that are made to that document.

Document in the JtextField

Hi,
In my application Jtextfield is there. Which takes the all Uppercase,Lowercase alphabets, Numbers,and the Special symbols.Send the document class for that if any one knows.It is the subclass. In super class only take the uppercase alphabets.
Regards,
Naresh

Read the JTextField API before posting questions in the forum.
a) You will find a link to the Swing tutorial on "How to Use Text Fields" which has all kinds of information on this topic.
b) You will find an example of a custom Document that converts all lower case characters to upper case characters.

Custom Document + Array of JTextFields

Hi,
I read through the tutorial and managed to get a Custom Document going for my JTextFields (of which i am using quite a few =))
To cut my code down and aid getting data back from the textfields, I changed them from a page of declarations to a couple of grouped arrays.
However, now that I have done that, whenever i change the text in one of the textfields, the text in all the textfields in the array change...
I'm assuming it's something to do with the super.insertString(offs, str, a); that is being called from the Custom Document, but I'm not sure how to fix it up...
Any help would be most appreciated.
Cheers
Andy

whenever i change the text in one of the textfields, the text in all the textfields in the array change...This means that each text field is using the same document. It's hard to help since you don't post any code. Your code should look something like:
textField1 = new JTextField()
textField1.setDocument( new CustomDocument() );
textField2 = new JTextField()
textField2.setDocument( new CustomDocument() );

I need help figuring out how to creat a button listener for my panel

import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;
   import java.util.Scanner;
    public class ExpressionCalculatorPanel extends JPanel
   // Variables to be used
      private JLabel inputLabel, resultLabel;
      private JTextField ExpressionCalculator;
      private JButton computeButton;
   // Constructor: Sets up the main GUI components.
       public ExpressionCalculatorPanel()
         inputLabel = new JLabel ("Enter a value of x");
         resultLabel = new JLabel ("Final result = ---");
         ExpressionCalculator = new JTextField (5);
         ExpressionCalculator.addActionListener(new ButtonListener());
           // Set buttons and listeners
         computeButton = new JButton("Compute Final Result");
         computeButton.addActionListener(new ButtonListener());
           // Add to panels
         add (computeButton);
         add (inputLabel);
         add (resultLabel);
         setPreferredSize (new Dimension(300, 75));
         setBackground (Color.white);
   // Represents an action listener for the temperature input field.
       private class ButtonListener implements ActionListener
      // Performs the conversion when the enter key is pressed in
      // the text field.
          public void actionPerformed (ActionEvent event)
   }

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Scanner;
public class ExpressionCalculatorPanel extends JPanel
// Variables to be used
private JLabel inputLabel, resultLabel;
private JTextField ExpressionCalculator;
private JButton computeButton;
// Constructor: Sets up the main GUI components.
public ExpressionCalculatorPanel()
inputLabel = new JLabel ("Enter a value of x");
resultLabel = new JLabel ("Final result = ---");
ExpressionCalculator = new JTextField (5);
ExpressionCalculator.addActionListener(new ButtonListener());
     // Set buttons and listeners
computeButton = new JButton("Compute Final Result");
computeButton.addActionListener(new ButtonListener());
     // Add to panels
add (computeButton);
add (inputLabel);
add (resultLabel);
setPreferredSize (new Dimension(300, 75));
setBackground (Color.white);
// Represents an action listener for the temperature input field.
private class ButtonListener implements ActionListener
// Performs the conversion when the enter key is pressed in
// the text field.
public void actionPerformed (ActionEvent event)
}

Disable focus on cell after JTable is disabled for editing

Hi!
I have, (like so many others ) problems with JTable.
I have a table, wich in default is non-editable. I can add rows using the "new"-button, and enter values with inputdialogs.
I can also select rows in the table( still without editing) and delete the selected rows with the "delete"-button.
BUT!
I have a "edit"-button(togglebutton). When this is pressed, user is allowed to edit cells in the table by double-clicking on them. If the user press the edit-button for the second time while the marker is in the active cell, the table once again becomes non-editable, except the active cell.
if the user, before clicking the editbutton for the second time clicks one time on an other cell, it works out great, and non of the cells are editable...
If anyone can help me, I'll be very greatfull and my boss very happy.
moitor

stop the edition of the JTable before setting your JTable as non editable
TableCellEditor editor = table.getCellEditor();
if (editor != null)
editor.stopCellEditing();

Listening for Changes to JTextArea

I am writing a program that listens for changes to the contents of a JTextArea to obtain input for its execution. But I have implemented DocumentListener, PropertyChangeListener to listen for changes to the JTextArea for deriving input without success. Please could anyone advice on what to do.
My code is below.
   myListener implements DocumentListener{
   JTextArea txt = new JTextArea();
   txt.getDocument().addDocumentListener(this);
   public void changedUpdate(DocumentEvent e){}
   public void removeUpdate(DocumentEvent e){}
   public void insertUpdate(DocumentEvent e){
    try{
     //my code for obtaining input from txt is here
     int start = e.getOffset();
     Document doc = e.getDocument();
    }catch(BadLocationException ble){
}

Here's a link to the Swing tutorial on "How to Write a Document Listener":
http://java.sun.com/docs/books/tutorial/uiswing/events/documentlistener.html

JTable Document Listener for JTextField editor

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