Selecting text in a JTable renderer?

Hi all,
I have a JTable with some non-editable cells. I don't want the user to be able to change these values, but I want the user to be able to select the text and copy it. I can''t seem to be able to do this with the default cell renderers, as they subclass JLabel and you can't select text in the JLabel (or can you?)
Anybody else have this problem?
I also tried to create my own table renderer by subclassing a JTextField, but when I call setText in the "getTableCellRendererComponent" method, it doesn't seem to set the text of the text field. Well it does, because I can then call getText() and that works fine, but it doesn't appear in the JTable.
any suggestions greatly appreciated,
J

Just in case anybody is interested, when you click on a table cell, the table cell editor is being used, not the cell editor.
Its simply a matter of setting a textfield for that cell editor and setting setEditable to false.
The user can then select the text, but not edit it. Works perfectly.
J

Similar Messages

Selecting Text in a JTable

Hi,
I have an application that uses a JTable with editable cells. When the user clicks a cell, I would like the cell's data to become highlighted. In other words, I don't just want the cell to get focus, I want the existing text within the cell to be selected.
Any thoughts on this? I'd be forever grateful (or at least for a few hours...)
Thanks,
-sheepy.

Just in case anybody is interested, when you click on a table cell, the table cell editor is being used, not the cell editor.
Its simply a matter of setting a textfield for that cell editor and setting setEditable to false.
The user can then select the text, but not edit it. Works perfectly.
J

How to catch selected text in JTable Column

Hi there,
I am learning JTable. Need help for How to get the selected text from the JTable Column which is set to be editable.
for example in JTextFiled you have method on getSelectedText(), is there any method for tracking the selected text.
Thanks in advance
Minal

Here's an example of the model I used in my JTable. Not the "getValueAt" method & "getRecordAt" method. You will have to have a Record object - but it only contains the attributes of an inserted record (with appropriate getters & setters). Hope this helps.
public class FileModel5 extends AbstractTableModel
public boolean isEditable = false;
protected static int NUM_COLUMNS = 3;
// initialize number of rows to start out with ...
protected static int START_NUM_ROWS = 0;
protected int nextEmptyRow = 0;
protected int numRows = 0;
static final public String file = "File";
static final public String mailName = "Mail Id";
static final public String postName = "Post Office Id";
static final public String columnNames[] = {"File", "Mail Id", "Post Office Id"};
// List of data
protected Vector data = null;
public FileModel5()
data = new Vector();
public boolean isCellEditable(int rowIndex, int columnIndex)
// The 2nd & 3rd column or Value field is editable
if(isEditable)
if(columnIndex > 0)
return true;
return false;
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
public Class getColumnClass(int c)
return getValueAt(0, c).getClass();
* Retrieves number of columns
public synchronized int getColumnCount()
return NUM_COLUMNS;
* Get a column name
public String getColumnName(int col)
return columnNames[col];
* Retrieves number of records
public synchronized int getRowCount()
if (numRows < START_NUM_ROWS)
return START_NUM_ROWS;
else
return numRows;
* Returns cell information of a record at location row,column
public synchronized Object getValueAt(int row, int column)
try
FileRecord5 p = (FileRecord5)data.elementAt(row);
switch (column)
case 0:
return (String)p.file;
case 1:
return (String)p.mailName;
case 2:
return (String)p.postName;
catch (Exception e)
return "";
public void setValueAt(Object aValue, int row, int column)
FileRecord5 arow = (FileRecord5)data.elementAt(row);
arow.setElementAt((String)aValue, column);
fireTableCellUpdated(row, column);
* Returns information of an entire record at location row
public synchronized FileRecord5 getRecordAt(int row) throws Exception
try
return (FileRecord5)data.elementAt(row);
catch (Exception e)
throw new Exception("Record not found");
* Used to add or update a record
* @param tableRecord
public synchronized void updateRecord(FileRecord5 tableRecord)
String file = tableRecord.file;
FileRecord5 p = null;
int index = -1;
boolean found = false;
boolean addedRow = false;
int i = 0;
while (!found && (i < nextEmptyRow))
p = (FileRecord5)data.elementAt(i);
if (p.file.equals(file))
found = true;
index = i;
} else
i++;
if (found)
{ //update
data.setElementAt(tableRecord, index);
else
if (numRows <= nextEmptyRow)
//add a row
numRows++;
addedRow = true;
index = nextEmptyRow;
data.addElement(tableRecord);
//Notify listeners that the data changed.
if (addedRow)
nextEmptyRow++;
fireTableRowsInserted(index, index);
else
fireTableRowsUpdated(index, index);
* Used to delete a record
public synchronized void deleteRecord(String file)
FileRecord5 p = null;
int index = -1;
boolean found = false;
int i = 0;
while (!found && (i < nextEmptyRow))
p = (FileRecord5)data.elementAt(i);
if (p.file.equals(file))
found = true;
index = i;
} else
i++;
if (found)
data.removeElementAt(i);
nextEmptyRow--;
numRows--;
fireTableRowsDeleted(START_NUM_ROWS, numRows);
* Clears all records
public synchronized void clear()
int oldNumRows = numRows;
numRows = START_NUM_ROWS;
data.removeAllElements();
nextEmptyRow = 0;
if (oldNumRows > START_NUM_ROWS)
fireTableRowsDeleted(START_NUM_ROWS, oldNumRows - 1);
fireTableRowsUpdated(0, START_NUM_ROWS - 1);
* Loads the values into the combo box within the table for mail id
public void setUpMailColumn(JTable mapTable, ArrayList mailList)
TableColumn col = mapTable.getColumnModel().getColumn(1);
javax.swing.JComboBox comboMail = new javax.swing.JComboBox();
int s = mailList.size();
for(int i=0; i<s; i++)
comboMail.addItem(mailList.get(i));
col.setCellEditor(new DefaultCellEditor(comboMail));
//Set up tool tips.
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for mail Id list");
col.setCellRenderer(renderer);
//Set up tool tip for the mailName column header.
TableCellRenderer headerRenderer = col.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer)
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the Mail Id to see a list of choices");
* Loads the values into the combo box within the table for post office id
public void setUpPostColumn(JTable mapTable, ArrayList postList)
TableColumn col = mapTable.getColumnModel().getColumn(2);
javax.swing.JComboBox combo = new javax.swing.JComboBox();
int s = postList.size();
for(int i=0; i<s; i++)
combo.addItem(postList.get(i));
col.setCellEditor(new DefaultCellEditor(combo));
//Set up tool tips.
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for post office Id list");
col.setCellRenderer(renderer);
//Set up tool tip for the mailName column header.
TableCellRenderer headerRenderer = col.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer)
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the Post Office Id to see a list of choices");
}

How to select rows in the inner JTable rendered in an outer JTable cell

I have wrriten the following code for creating cell specific renderer - JTable rendered in a cell of a JTable.
table=new JTable(data,columnNames)
public TableCellRenderer getCellRenderer(int row, int column)
if ((row == 0) && (column == 0))
return new ColorRenderer();
else if((row == 1) && (column == 0))
return new ColorRenderer1();
else
return super.getCellRenderer(row, column);
ColorRenderer and ColorRenderer1 are two inner classes, which implement TableCellRenderer to draw inner JTable on the outer JTable cell, having 2 rows and 1 column each.
Now what is happening the above code keeps executing continously, that is the classes are being initialised continously, inner JTables are rendered (drawn) continously, and this makes the application slow after some time. It throws java.lang.OutOfMemoryException.
WHY IS IT SO??? I can't understand where's the bug..
Any advice please???
Moreover i want selections in inner tables and not on outer table, how can this be possible.
I am working on this since a long time but have not yet found a way out...

With your help i have overcome the problem of continous repeatition.
The major problem which I am facing is, in selecting rows in the inner rendered JTables.
I have added listener on outer JTable which select rows on the outer JTable, hence the complete inner JTable which being treated as a row, gets selected.
The thing is i need to select the rows of inner rendered JTables,not the outer JTable.
How to go about it??
I have even added listener to inner rendered JTables, but only first row of every table gets selected.
Please help....
Thanks in advance.

To change the font of a selected row in a Jtable

Hello,
Is it possible to change the font of a selected row in a jtable?
i.e. if all the table is set to a bold font, how would you change the font of the row selected to a normal (not bold) font?
thank you.

String will be left justified
Integer will be right justified
Date will be a simple date without the time.
As it will with this renderer.Only if your custom renderer duplicates the code
found in each of the above renderers. This is a waste
of time to duplicate code. The idea is to reuse code
not duplicate and debug again.
No, no, no there will be NO duplicated code.
A single renderer class can handle all types ofdata.
Sure you can fit a square peg into a round hole if
you work hard enough. Why does the JDK come with
separate renderers for Date, Integer, Double, Icon,
Boolean? So that, by default the rendering for common classes is done correctly.
Because its a better design then having code
with a bunch of "instanceof" checks and nested
if...else code.This is only required for customization BEYOND what the default renderers provide
>
And you would only have to use instanceof checkswhen you required custom
rendering for a particular classAgreed, but as soon as you do require custom
renderering you need to customize your renderer.
which you would also have to do with theprepareRenderer calls too
Not true. The code is the same whether you treat
every cell as a String or whether you use a custom
renderer for every cell. Here is the code to make the
text of the selected line(s) bold:
public Component prepareRenderer(TableCellRenderer
renderer, int row, int column)
Component c = super.prepareRenderer(renderer, row,
, column);
     if (isRowSelected(row))
          c.setFont( c.getFont().deriveFont(Font.BOLD) );
     return c;
}It will work for any renderer used by the table since
the prepareRenderer(...) method returns a Component.
There is no need to do any kind of "instanceof"
checking. It doesn't matter whether the cell is
renderered with the "Object" renderer or the
"Integer" renderer.
If the user wants to treat all columns as Strings or
treat individual columns as String, Integer, Data...,
then they only need to override the getColumnClass()
method. There is no change to the prepareRenderer()
code.
Have you actually tried the code to see how simple it
is?
I've posted my code. Why don't you post your solution
that will allow the user to bold the text of a Date,
Integer, and String data in separate column and then
let the poster decide.Well, I don't see a compilable, runnable demo anywhere in this thread. So here's one
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.Vector;
public class TableRendererDemo extends JFrame{
    String[] headers = {"String","Integer","Float","Boolean","Date"};
    private JTable table;
    public TableRendererDemo() {
        buildGUI();
    private void buildGUI() {
        JPanel mainPanel = (JPanel) getContentPane();
        mainPanel.setLayout(new BorderLayout());
        Vector headerVector = new Vector(Arrays.asList(headers));
         Vector data = createDataVector();
        DefaultTableModel tableModel = new DefaultTableModel(data, headerVector){
            public Class getColumnClass(int columnIndex) {
                return getValueAt(0,columnIndex).getClass();
        table = new JTable(tableModel);
//        table.setDefaultRenderer(Object.class, new MyTableCellRenderer());
        table.setDefaultRenderer(String.class, new MyTableCellRenderer());
        table.setDefaultRenderer(Integer.class, new MyTableCellRenderer());
        table.setDefaultRenderer(Float.class, new MyTableCellRenderer());
        table.setDefaultRenderer(Date.class, new MyTableCellRenderer());
        JScrollPane jsp = new JScrollPane(table);
        mainPanel.add(jsp, BorderLayout.CENTER);
        pack();
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    private Vector createDataVector(){
        Vector dataVector = new Vector();
        for ( int i = 0 ; i < 10; i++){
            Vector rowVector = new Vector();
            rowVector.add(new String("String "+i));
            rowVector.add(new Integer(i));
            rowVector.add(new Float(1.23));
            rowVector.add( (i % 2 == 0 ? Boolean.TRUE : Boolean.FALSE));
            rowVector.add(new Date());
            dataVector.add(rowVector);
        return dataVector;
    public static void main(String[] args) {
        Runnable runnable = new Runnable() {
            public void run() {
                TableRendererDemo tableRendererDemo = new TableRendererDemo();
                tableRendererDemo.setVisible(true);
        SwingUtilities.invokeLater(runnable);
    class MyTableCellRenderer extends DefaultTableCellRenderer{
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
             super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            if ( isSelected){
                setFont(getFont().deriveFont(Font.BOLD));
            else{
                setFont(getFont().deriveFont(Font.PLAIN));
            if ( value instanceof Date){
                SimpleDateFormat formatter =(SimpleDateFormat) SimpleDateFormat.getDateInstance(DateFormat.MEDIUM);
                setText(formatter.format((Date)value));
            if(value instanceof Number){
               setText(((Number)value).toString());
            return this;
}Hardly a "bunch of instanceof or nested loops. I only used the Date instanceof to allow date format to be specified/ modified. If it was left out the Date column would be "18 Apr 2005" ( DateFormat.MEDIUM, which is default).
Cheers
DB

How to get selected text values in a textarea by mouse click?

Hi Everyone,
What I am trying to do is to click on some texts in a textarea, then get the selected text value.
If you guys have used an accounting software called Simply Accounting, you might understand better.
I list all my customer names in a textarea. What I want is, when I click on one customer, another GUI pops up with this customer's information. My problem is that I don't know how to get the selected text value from a textarea.
Could anyone give a hand here? Thank you in advance.

Is there some reason you aren't using a JList or
JTable to display
the user names/information?Thank you for es5f2000's reply. You just gave me a better idea! There is not a particular reason I have to use TextArea to list my customers. As long as the component can make my idea alive, I definitely use it. Still, if there is any way to get a selected text value, it will help me a lot with my project. Thank you.

Using browser javascript to copy selected text from a pdf file opened in Air app.

I have posted this question on reader forum as well, but I think it is more suited here...
I am trying to create a note-taking application in air. I want to extract selected text from pdf file as a string object or to the clipboard.
Obviously, all pdfs in my local storage will not be scripted to recieve postMessages and act accordingly, and that is not practical either. So, my problem is, how can I copy the selected text in the pdf file (opened as an object in htmlloader within my Air app) to clipboard or directly in another control by say clicking a button in air application? I suppose, this is possible using javascript, however, I don't know which reader methods are exposed to the wrapper htmlloader control. In short, I want to execute app.execMenuItem("Copy") command through htmlloader javascript. Any alternate solutions are also welcome.
This is similar to passing inbuilt commands/methods/functions (of adobe reader) to pdf-reader plugin embedded in a webpage via javascript. This is possible in IE where the pdf is rendered as activex object, and hence JSObject interface of pdf document/reader is accessible to the browser javascript. I have also read that this same JSObject is accessible to VB as interface for IAC, so as the Air is Adobe's own product, I was wondering if equivalent of JSObject is accessible to htmlloader control as well.
Thanks in advance...
Mits

Thank you Thom for your reply...
from
http://www.adobe.com/devnet/acrobat/javascript.html
...Through JavaScript extensions, the viewer application and its plug-ins expose much of their functionality to document authors, form designers, and plug-in developers...
As it is explicitly mentioned, that the functionality of adobe reader are exposed for plugin development, I thought someone here might have used external javascript to execute some safe methods in adobe reader. The functionality (i.e. external javascript interface-JSObject) is already available for VB programmers to develop IAC. Further, the Acrobat SDK example called "AcroPDFinHML" shows how one can embed a pdf-reader in a html page and execute some safe methods (like gotonextpage(), zooming etc.) in IE as ActiveX plugin. I have checked it myself for adobe reader 9, and it works perfectly, so there is no security issue as such to implement the same for another browser (like in my case, the htmlloader control in flex/air app).
I intend to create a note taking application in air, where it is very much required that I should be able to copy selected text from various pdf documents, that are open in my app, and subsequently paste/collect/save the collected notes and process them afterwords (offcourse, from the pdfs that allow me copying text). However, it is not happening for me here. As the pdfs are opened through adobe reader plugin, it does not register the copy command executed by my air app. It registers the system level copy command (by keyboard shortcut Ctrl+C), but my air app has no way to execute the system level copy command programmatically. So I am kind of stuck here...
Thanks again for your reply. Having known what am I intend to accomplish, any other (may be alternative) solutions will be appreciated nonetheless...
Mits

Changing text color of item renderer in datagrid

Hi,
I have the following datagrid:
<mx:DataGridColumn field="name" ......... />
<mx:DataGridColumn itemRenderer="myRenderer" ...... />
In myRenderer, I extend from the TextInput class; with the
text color:WHITE
My question is:
When I do a mouse rollover/selection on any row of the
datagrid, how can I change the text color of my renderer?
If I add the rollover/selection event listener for my
renderer, it will only change the color when my mouse is over its
column.
I want it to change colour whenever the row is selected/
rollover.
Thank you very much.
Regards,
hy

Hi,
The rollOverColor and selectionColor style on the Datagrid
will only work for the normal columns.
Since my column extends from the TextInput, the rollOverColor
and selectionColor style does not seem to have any effect on the
itemrenderer.
hy

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Hi,
not a dumb question at all. Before answering it, here some comments on the code you pasted in your question
1. UIComponent uiComponent = facesContext.getViewRoot().findComponent(componentId);
This code line is not used at all in your method. So it seems you can get rid of it
2. "Component = AdfPage.PAGE.findComponentByAbsoluteId('" + componentId + "'); Component.focus();");
I suggest to change it to
"var component = AdfPage.PAGE.findComponentByAbsoluteId('" + componentId + "'); component.focus();");
as it is better coding practice to have variable names starting with a lower case letter and being flagged with the "var" identifier
For pre-selecting text in an an input component, there is no API available in ADF Faces, which means you need to reach out to the rendered HTML ouput. To access the markup for the rendered component, you can try
var markup = AdfRichUIPeer.getDomContentElementForComponent(component)
If this markup returns the HTML input component then you can use JavaScript you find on the Internet to select the area of it. If it does not return the input component then you may have to use
document.getElementById(componentId+'::content')
Note however that working directly with generated HTML output bears the risk that your code breaks when - for whatever reason - the ADF Faces component rendering changes in the future
Frank
Frank

Can no longer select text in email template or read only field with mouse using IE or Firefox?

Hi Guys,
I can no longer select text in email template or read only field using my mouse in IE or Firefox anymore. We are using CRM 2011 rollup 18 applied with IE 11 and the latest version of Firefox. We only applied roll up 18 in Feb when this issue began.
Thanks
Dave
David Kelly

When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.
(1) Bypass Firefox's Cache
Use Ctrl+Shift+r to reload the page fresh from the server.
(You also can clear Firefox's cache completely using:
orange Firefox button ''or'' Tools menu > Options > Advanced
On the Network mini-tab > Cached Web Content : "Clear Now")
(2) Remove the site's cookies (save any pending work first) using either of these. While viewing a page on the site:
* right-click and choose View Page Info > Security > "View Cookies"
* Alt+t (open the classic Tools menu) > Page Info > Security > "View Cookies"
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These features rely on JavaScript, and it sounds as though you have scripting enabled if you get (the wrong) color changes. Some add-ons might alter the way scripts operate, so a standard diagnostic to bypass interference by extensions (and some custom settings) is to try Firefox's Safe Mode.
First, I recommend backing up your Firefox settings in case something goes wrong. See [[Backing up your information]]. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.)
Next, restart Firefox in Firefox's Safe Mode ([[Safe Mode]]) using
Help > Restart with Add-ons Disabled
In the dialog, click "Start in Safe Mode."
If those features work correctly, this points to one of your extensions or custom settings as the problem.
To also disable plugins, you can use this page:
orange Firefox button ''or'' classic Tools menu > Add-ons > Plugins category
Any change?

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My application allows the user to select between the Data Provider for ODBC and the Data Provider for Oracle. (ODP)
When using the ODBC provider the statement:
Select text from all_views where view_name='MYVIEW'
returns the expected string.
If I connect via ODP however it returns an empty string.
(If I use 'Select *' it tells me the text_length is 154 in this specific case - so there is definately text available.)
I'm thinking it has something to do with the fact that the data type is LONG.
In both cases I retreive the data using rdr.GetChars(), which should work.
If I use the dbms_metadata.get_ddl function instead, it does return the string (Probably because the return type is not LONG)
Unfortunately that function only works for Views in the current schema, while the original Select works for any view.
(And I dont know what version of Oracle this function was added in - I have to support older versions too.)
Similarly, if I use one of the XML functions to retreive the text as XML it works fine.
(Again it is probably returned as a VARCHAR2 instead of a LONG.)
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The problem appears to be specific to this column in all_views.
Anyone know a solution to this?
Thanks
Mike

Thanks that was it.
I had not seen those properties since I am working with the 'generic' objects (DbCommand rather than OracleCommand, etc.)
What is strange is that I was able to retreive data from my own LONG column WITHOUT setting this value to -1.
(It defaulted to 0 in both cases.)
The only difference was that when I retreived data from my own column I specified CommandBehaviour.SequentialAccess.
When I retreived the all_views.text column I did not specify a behaviour at all.
However the Oracle docs said that SequentialAccess is not supported ... so I guess that is not correct.
(Maybe it doesn't 'work', but it certainly seems to cause things to work differently)
Thanks
Mike

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I want to use Mozilla Firefox very much for a long time. I like it because the UI is very clean, easy to use, the icon vey pretty. When I use in my Android Mobile, it is very easy and intelligent to select content of page site. Very good!
But I had to install Chrome instead so I've always been using "Print a selected content to PDF" but I couldn't find ways to do that with Firefox. Chrome is doing very good.
I searched all add-ons, pdf printer software but they are only saving or printing all the page (website) to PDF.
Please help me the ways to save a selected content to PDF. Thanks very much.

Hii hanh01001..
I think i know one solution to the problem
https://addons.mozilla.org/en-US/firefox/addon/print-selected-text/?src=api
this is an add on that is used to print the selected text only..
have a nice day :) :)
---Thanks tracy :)

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In the preOpen event of the second dropdown list you put something like (in formCalc):
if (dropdown1 == 1) then
$.clearItems()
$.setItems("Year, 2 Year, 3 Year")
elseif (dropdown1 == 2) then
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First tap where you want the selection to start. (It might help to zoom in as far as possible first. You can do this using the volume buttons in the newly-released Firefox 1.1rc1.) Then hold the Shift key while pressing the arrow keys on the N900 keyboard to select text.
Note: We are aware that this is not a very user-friendly way to select text, and we hope to include a better design in a future version of mobile Firefox.

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Hi,
I am using an <af:inputText> component, within which I would want to know if any text has been selected.
InputText.getValue() would give me the total value that is there within the inputText component. But if I have selected a part of the text, I would like to get hold of that.
Is there a way in ADF, to get that selected Text ?
Thanks,
Pawan.

Hi,
If I am to use javascript, can i directly use the IE/FF (browser-specific) code to get hold of the selected text ?
The ADF javascript API doesn't seem to have a way to get the selected text.
Thanks,
Pawan.

Selecting text in a JTable renderer?

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