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Type:
Bug
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Status: Open
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Priority:
P3
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Resolution: Unresolved
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Affects Version/s: 8, 9, 10, 11
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Fix Version/s: tbd
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Component/s: client-libs
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Labels:None
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Subcomponent:
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CPU:generic
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OS:generic
In some cases the html text in JTextPane is broken.
It can be reproduced using this modified test case:
open/test/jdk/javax/swing/JTextPane/JTextPaneDocumentAlignment.java
======
import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import java.awt.*;
public class JTextPaneDocumentAlignment {
private static JFrame frame;
private static JTextPane jTextPane;
private static int position;
public static void main(String[] args) throws Exception{
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
frame = new JFrame();
frame.setUndecorated(true);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setSize(200, 200);
jTextPane = new JTextPane();
jTextPane.setContentType("text/html");
jTextPane.setText(
"<html><body><b id='test'>Test</b></body></html>");
SimpleAttributeSet right = new SimpleAttributeSet();
StyleConstants.setAlignment(right, StyleConstants.ALIGN_RIGHT);
jTextPane.getStyledDocument()
.setParagraphAttributes(0, 10, right, true);
frame.getContentPane().add(jTextPane);
frame.setVisible(true);
// pane.setFont(font.deriveFont(10.0f)); // UNCOMMENT THIS LINE
// SwingUtilities.updateComponentTreeUI(frame); // Should be no-op
}
});
Robot robot = new Robot();
robot.waitForIdle();
robot.delay(200);
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
try {
position = jTextPane.modelToView(1).x;
SimpleAttributeSet center = new SimpleAttributeSet();
StyleConstants.setAlignment(center,
StyleConstants.ALIGN_CENTER);
jTextPane.getStyledDocument()
.setParagraphAttributes(0, 10, center, true);
} catch (BadLocationException e) {
e.printStackTrace();
}
}
});
if(position < 100) {
throw new RuntimeException("Text is not right aligned " + position);
}
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
try {
position = jTextPane.modelToView(1).x;
} catch (BadLocationException e) {
e.printStackTrace();
}
}
});
if(position < 20) {
throw new RuntimeException("Text is not center aligned " + position);
}
System.out.println("ok");
}
}
======
To see a bug:
- Try to edit the text inside the pane, it will looks broken.
- or uncomment this line in the test // pane.setFont(font.deriveFont(10.0f));
- or uncomment this line in the test // SwingUtilities.updateComponentTreeUI(frame); // Should be no-op
It can be reproduced using this modified test case:
open/test/jdk/javax/swing/JTextPane/JTextPaneDocumentAlignment.java
======
import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import java.awt.*;
public class JTextPaneDocumentAlignment {
private static JFrame frame;
private static JTextPane jTextPane;
private static int position;
public static void main(String[] args) throws Exception{
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
frame = new JFrame();
frame.setUndecorated(true);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setSize(200, 200);
jTextPane = new JTextPane();
jTextPane.setContentType("text/html");
jTextPane.setText(
"<html><body><b id='test'>Test</b></body></html>");
SimpleAttributeSet right = new SimpleAttributeSet();
StyleConstants.setAlignment(right, StyleConstants.ALIGN_RIGHT);
jTextPane.getStyledDocument()
.setParagraphAttributes(0, 10, right, true);
frame.getContentPane().add(jTextPane);
frame.setVisible(true);
// pane.setFont(font.deriveFont(10.0f)); // UNCOMMENT THIS LINE
// SwingUtilities.updateComponentTreeUI(frame); // Should be no-op
}
});
Robot robot = new Robot();
robot.waitForIdle();
robot.delay(200);
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
try {
position = jTextPane.modelToView(1).x;
SimpleAttributeSet center = new SimpleAttributeSet();
StyleConstants.setAlignment(center,
StyleConstants.ALIGN_CENTER);
jTextPane.getStyledDocument()
.setParagraphAttributes(0, 10, center, true);
} catch (BadLocationException e) {
e.printStackTrace();
}
}
});
if(position < 100) {
throw new RuntimeException("Text is not right aligned " + position);
}
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
try {
position = jTextPane.modelToView(1).x;
} catch (BadLocationException e) {
e.printStackTrace();
}
}
});
if(position < 20) {
throw new RuntimeException("Text is not center aligned " + position);
}
System.out.println("ok");
}
}
======
To see a bug:
- Try to edit the text inside the pane, it will looks broken.
- or uncomment this line in the test // pane.setFont(font.deriveFont(10.0f));
- or uncomment this line in the test // SwingUtilities.updateComponentTreeUI(frame); // Should be no-op