JlayeredPane in netbeans

[mukesh tiwari]

Hello all, I am trying to put two components Jeditorpane and Jtextarea
in Jlayeredpane. I am using Netbeans. I added jeditorpane and
jtextarea in jlayeredpane and two buttons. When i click on button1
then it should show message "Hello world doing nice".

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
jTextArea1.setText("");
jTextArea1.setOpaque(true);
jLayeredPane1.moveToFront(jEditorPane1);
jEditorPane1.setText("Hello world doing nice");
}
and when click on button2 then it should show message "Hello world not
doing good".

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
jEditorPane1.setText("");
jEditorPane1.setOpaque(true);
jLayeredPane1.moveToFront(jTextArea1);
jTextArea1.setText("Hello world not doing good");
}
But when i click on button1 then it shows message "Hello world doing
nice" but when i click on button2 then it does not show message "Hello
world not doing good" as it should move the component to front. Could
some one please tell me how to solve this. Here is source code which
is partially generated by netbeans and partially written by me. Thank
you.

public class test extends javax.swing.JFrame {

/** Creates new form test */
public test() {
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.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jLayeredPane1 = new javax.swing.JLayeredPane();
jScrollPane1 = new javax.swing.JScrollPane();
jEditorPane1 = new javax.swing.JEditorPane();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();


setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLayeredPane1.add(jTextArea1);// i added this component using
custom code property
jLayeredPane1.add(jEditorPane1); //i added this component using
custom code property

jEditorPane1.setText("");//i added this component using custom
code property
jScrollPane1.setViewportView(jEditorPane1);

jScrollPane1.setBounds(0, 0, 480, 200);
jLayeredPane1.add(jScrollPane1,
javax.swing.JLayeredPane.DEFAULT_LAYER);

jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setText("");//i added this component using custom code
property
jScrollPane2.setViewportView(jTextArea1);

jScrollPane2.setBounds(0, 0, 480, 200);
jLayeredPane1.add(jScrollPane2,
javax.swing.JLayeredPane.DEFAULT_LAYER);

jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("jButton2");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(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()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLayeredPane1,
javax.swing.GroupLayout.PREFERRED_SIZE, 505,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(143, 143, 143)
.addComponent(jButton2)))
.addContainerGap(68, Short.MAX_VALUE))
);
layout.setVerticalGroup(

layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(42, 42, 42)
.addComponent(jLayeredPane1,
javax.swing.GroupLayout.PREFERRED_SIZE, 228,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(33, 33, 33)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addContainerGap(43, Short.MAX_VALUE))
);

pack();
}// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.setText("");
jTextArea1.setOpaque(true);
jLayeredPane1.moveToFront(jEditorPane1);
jEditorPane1.setText("Hello world doing nice");
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jEditorPane1.setText("");
jEditorPane1.setOpaque(true);
jLayeredPane1.moveToFront(jTextArea1);
jTextArea1.setText("Hello world not doing good");
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new test().setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JEditorPane jEditorPane1;
private javax.swing.JLayeredPane jLayeredPane1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTextArea jTextArea1;
// End of variables declaration
}

 

[markspace]

Hello all, I am trying to put two components Jeditorpane and Jtextarea
in Jlayeredpane. I am using Netbeans. I added jeditorpane and
jtextarea in jlayeredpane and two buttons. When i click on button1
then it should show message "Hello world doing nice".

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
jTextArea1.setText("");
jTextArea1.setOpaque(true);
jLayeredPane1.moveToFront(jEditorPane1);
jEditorPane1.setText("Hello world doing nice");
}
and when click on button2 then it should show message "Hello world not
doing good".

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
jEditorPane1.setText("");
jEditorPane1.setOpaque(true);
jLayeredPane1.moveToFront(jTextArea1);
jTextArea1.setText("Hello world not doing good");
}

I simplified these methods to remove unnecessary calls. The result is
better and the text now displays. However the formatting is still a bit
odd, it looks like some of the text is offset slightly from the origin.
I'm not sure why that is.

Here are the improved event handlers.

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// jTextArea1.setText("");
// jTextArea1.setOpaque(true);
// jLayeredPane1.moveToFront(jEditorPane1);
jEditorPane1.setText("Hello world doing nice");
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// jEditorPane1.setText("");
// jEditorPane1.setOpaque(true);
// jLayeredPane1.moveToFront(jTextArea1);
jTextArea1.setText("Hello world not doing good");
}

 

[mukesh tiwari]

I simplified these methods to remove unnecessary calls.  The result is
better and the text now displays.  However the formatting is still a bit
odd, it looks like some of the text is offset slightly from the origin.
  I'm not sure why that is.

Here are the improved event handlers.

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
     // TODO add your handling code here:
//    jTextArea1.setText("");
//    jTextArea1.setOpaque(true);
//    jLayeredPane1.moveToFront(jEditorPane1);
     jEditorPane1.setText("Hello world doing nice");

}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
     // TODO add your handling code here:
//    jEditorPane1.setText("");
//    jEditorPane1.setOpaque(true);
//    jLayeredPane1.moveToFront(jTextArea1);
     jTextArea1.setText("Hello world not doing good");



}

Hi markspace
Thank you for your reply but this is not fulfilling the purpose
because texts are deformed in second case. I don't know if i
understand the JlayeredPane fully but what in my mind is , i added
two components [ jeditorpane and jtextarea ] in jLayeredpane in same
Default_Layer and use the function moveTofront and moveToback to move
these components in same layer.When jeditorpane will be in front
position then it will hide all the contents of jtextarea and vice-
versa. Its like dynamically changing the components position in layer
but i don't think this is happening. Thanks again for your valuable
insights.
Regards
Mukesh Tiwari

 

[John B. Matthews]

Thank you for your reply, but this is not fulfilling the purpose
because texts are deformed in second case. I don't know if I
understand the JLayeredPane fully, but what in my mind is [this]: I
added two components [ jeditorpane and jtextarea ] in jLayeredpane in
same Default_Layer and use the function moveTofront and moveToback to
move these components in same layer. When jeditorpane will be in
front position then it will hide all the contents of jtextarea and
vice- versa. It's like dynamically changing the components position
in layer, but I don't think this is happening.

LayeredPane is intended to show overlapping components simultaneously,
as might be seen in JDesktopPane:

<http://download.oracle.com/javase/tutorial/uiswing/components/layeredpane.html>

To show "different components at different times," CardLayout might be
a better choice:

<http://download.oracle.com/javase/tutorial/uiswing/layout/visual.html#card>

As an aside, I found it helpful to explore individual components using
manual layouts before advancing to multiple, nested components in a GUI
editor:

<http://download.oracle.com/javase/tutorial/uiswing/layout/visual.html>
<http://download.oracle.com/javase/tutorial/uiswing/components/index.html>