Glass pane

Hello,
I have a question about the following program.
import java.awt.*;
import javax.swing.*;
public class Test extends JApplet {
public void init() {
JButton button = new JButton("CLICK!");
getContentPane().setLayout(new GridLayout(1, 1));
getContentPane().add(button);
GlassPane glassPane = new GlassPane();
setGlassPane(glassPane);
glassPane.setOpaque(false);
glassPane.setVisible(true);
class GlassPane extends JPanel {
public void paintComponent(Graphics g) {
g.fillRect(0, 0, 50, 50);
It works just like the way I want but, when rectangle is visible I don't want user to be able to click on the button. Is there a method that can help me do that or is there anything else you can think of?
Thanks for your time.
Berk Can Celebisoy

I don't want it clickable but I want visible as it
is.
Berk.'enabled' and 'visible' are too different animals.
.setEnabled(false) will leave it visible, but make it unclickable

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Different glass pane behaviour in Mac and Windows

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Hi,
We are using glass pane implementation on a search screen.
When I click on Search button in af:query component (having selectInputDate (Date Picker) components)., glass pane is firing correctly,
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( (EMPNO = :empNum ) AND (DEPTNO = :deptNum ) AND (TO_CHAR( TO_TIMESTAMP(HIREDATE), 'yyyy-mm-dd hh24:mi:ss.ff') = :hireDts ) ) (View Criteria)
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Edited by: user10115793 on Nov 15, 2011 12:58 AM

Splitpane under a glass pane

I have a lot of components under a transparent glass pane.
I dispatch mouse events captured by the topmost glasspane
to underling components converting coordinates with
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validate(), repaint() methods invoked on the split at event
dispatching time are completely unusefull.
The glasspane gets MouseListener and MouseMotionListener
events.
Whats the trik to get the split working?
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Thanks for the response. The application I am writing has a split pane down the middle, with a glasspane on each side already over what are called View containers. However, a View in either of those containers may contain another splitpane.
I was hoping for a simpler framework style solution such that the developers of a View would not be required to implement their own glasspane functionality and have to tie into the active View management.
My current recourse is to utilize the KeyboardFocusManager to attempt to accomplish what I was trying to do with the GlassPane: set the active view based on selection in any portion of the View (component or empty Panel area). Got the first half working pretty easily, I expect the second have to be quite more challenging.
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How can I block the keyboard using the glass pane ?

I have a problem with the GlassPaneDemo from the Java Tutorial in
the
uiswing/components/example-swing
folder.
When the glass pane is visible it blocks the mouse input but the
keyboard input doesn't. For example if the glass pane is visible and
you press the F10 key, the menu will be activated. So the keyboard is
not at all blocked.
Can this problem be fixed ? I mean, to really block the keyboard
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Here I wrote down the specification written in the
Java Documentation at the setGlassPane method from the
RootPaneContainer interface:
The glassPane is always the first child of the rootPane and the
rootPanes layout manager ensures that it's always as big as the
rootPane. By default it's transparent and not visible. It can be
used to temporarily grab all keyboard and mouse input by adding
listeners and the making it visible. by default it's not visible.
As it may be seen, one says that the keyboard input can be blocked.
HOW ?
In hope that I resolve the problem, I have made some changes such as,
adding a key listener to the glass pane add listening to the keyboard events,
but I failed to fix the problem.
Faithfully yours,
Sarmis

Here is an example that I think will work for you.
Note the consume() call on the event object. I think that is what you're after.
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import javax.swing.*;
public class Comparer extends JFrame implements ActionListener
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        JButton theButton = new JButton("Glass");
        theButton.addActionListener(this);
        getContentPane().add(theButton);
        pack();
    public void actionPerformed(ActionEvent anEvent)
        myGlassPane.setVisible(true);
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        new Comparer().setVisible(true);
class GlassComponent extends JComponent implements AWTEventListener
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        addMouseListener( new MouseAdapter() {} );
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                this.myParentWindow = SwingUtilities.windowForComponent(this);
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        else
            Toolkit.getDefaultToolkit().removeAWTEventListener(this);
        super.setVisible(aVisibleBoolean);
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        if(anEvent instanceof KeyEvent && anEvent.getSource() instanceof Component)
            if(SwingUtilities.windowForComponent( (Component)anEvent.getSource()) == this.myParentWindow )
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} HTH,
Fredrik

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Disabling GUI controlls causing the loose of the controls beauty.
However, sometimes it is neccessary, to display the control in
a uneditable mode, especially when the input can not be consumed.
The perfect idea to maintain the beauty of the GUI contorls and
make them uneditable, is to put a glass infront of them, so you just
look from pattern :).
This is a greate idea provided through GlassPane in the Swing API.
But, still there is a limitation, why?
The glass pane should be as large as the JRootPane, which means
that you have to cover the whole top-level container :(.
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I have a TabbedPane that consists of multiple tabs and the tabbed pane is loacted in a JApplet. I need to move between the tabs while making the controls in side the tabbs uneditable. Here I was constrained by the
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tab.
Please what do you think ? :-)

I think it is not useful because you can create your own glasspane for any component you want !
Look at this thread :
http://forum.java.sun.com/thread.jsp?forum=57&thread=268566
I hope this helps,
Denis

Redrawing glass pane

Hi, I have a program where I am storing information which takes up some time. I created a progressbar and put it in the glass pane and update it several times during this process. Below i posted a simplified example. In this example it works as it should and the progress bar gets redrawn every time I call pb.update().
However the code I use in the application is complex and the progress bar does not get drawn onto the screen until the method finishes, which is too late. I have tried putting repaint() calls at the end of the update() method, but that does not work. Although the program enters the paint method, nothing gets drawn onto the screen. The only thing that helped was paintimmediately(), which painted the contentPane() on the screen, but did not paint the glassPane.
My question is, how does java determine when to redraw the glass pane, since I don't have a repaint() call anywhere. Is there a way to force java to draw the glasspane on the screen? Or if you have any tips as to what could be the problem.
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
public class Main extends JFrame {
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     setSize(200,50);
     setVisible(true);
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     setGlassPane(pb);
     pb.setVisible(true);
     Thread t = new Thread();
     try {
         t.sleep(1000);
         pb.update();
         t.sleep(1000);
         pb.update();
         t.sleep(1000);
         pb.update();
         t.sleep(1000);
         pb.update();
         t.sleep(300);
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     pb.setVisible(false);
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     JFrame.setDefaultLookAndFeelDecorated(true);
     Main app = new Main();
     app.addWindowListener(
        new WindowAdapter() {
           public void windowClosing( WindowEvent e )
          System.exit( 0 );
public class ProgressBar extends JComponent {
JProgressBar jProg;
int cur;
    public ProgressBar () {
     init();
     cur = 0;
     setOpaque(false);
    public void init() {
        jProg = new javax.swing.JProgressBar(0,100);
     jProg.setValue(0);
     jProg.setStringPainted(true);
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     jProg.setValue(cur);
}

Read the Swing tutorial on [url http://java.sun.com/docs/books/tutorial/uiswing/components/progress.html]How to Use Progress Bars for a working example. You should also read the section from the tutorial on "How to Use Threads" since you are not using the Thread correctly in you simple demo.

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In the code below, the glass pane is a JPanel which everybody knows is a Swing lightweight component. Then why JComboBox requires setLightWeightPopupEnabled(false) for its proper functioning? What on earth does the method, in the first place? Why glass pane? What oddity in the hell does the glass pane have that other Swing component doesn't, never?
import javax.swing.*;
import java.awt.*;
public class GlassPaneOddity{
public static void main(String[] args){
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This is a quite interesting subject:
The JRootPane has basically 2 components (although its layout is managing a few more):
- the glasspane
- the layered pane
The z-order of components inside containers (so also for JRootPane) is defined to be:
- index 0 is highest
- index 1 is lower but higher than 2 etc...
The glasspane is added always on index 0 (meaning highest)
The layered pane is added after (meaning lower)
Inside the layered pane are added:
- the content pane
- the menubar
And the layout of the rootpane (RootLayout) takes care of the positioning of the glasspane, layered pane, content pane and the menubar.
The layered pane has a layer for content (containing contentpane and menubar) but also for popups. The popups are shown on top of the content pane, but always under the glasspane.
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It isn't that hard to do, but I recommend using JLayeredPane instead of the glass pane. The glass pane has the unique property of being above all other container, but also has important functionality that relays events down through the content pane.
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Author, HARDCORE JFC
[email protected]

Glass Pane Effect in JDev.

i experts,
I am using JDev 11.1.1.5.0, I am using the following code for rendering messages.
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Thanks,
-Arun

you mean
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Glass pane effect in faces message.

Hi experts,
I am using JDev 11.1.1.5.0, I am using the following code for rendering messages.
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-Arun

duplicate of {thread:id=2534727}
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