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/* @test
* @bug 4694598
* @key headful
* @summary JEditor pane throws NullPointerException on mouse movement.
* @run main bug4694598
*/
import java.awt.AWTException;
import java.awt.Robot;
import java.io.IOException;
import java.io.Writer;
import java.lang.reflect.InvocationTargetException;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class bug4694598 {
JFrame frame;
volatile int bottom;
final Path frameContentFile = Path.of("FrameContent.html");
public void setupGUI() {
frame = new JFrame("Test 4694598");
JEditorPane jep = new JEditorPane();
jep.setEditable(false);
frame.getContentPane().add(jep);
frame.setLocation(50, 50);
frame.setSize(400, 400);
String frameContentString = "\n" +
" Frame content.\n" +
"";
try (Writer writer = Files.newBufferedWriter(frameContentFile)) {
writer.write(frameContentString);
} catch (IOException ioe){
throw new RuntimeException("Could not create html file to embed", ioe);
}
URL frameContentUrl;
try {
frameContentUrl = frameContentFile.toUri().toURL();
} catch (MalformedURLException mue) {
throw new RuntimeException("Can not convert path to URL", mue);
}
jep.setContentType("text/html");
String html = " " +
"" +
// ! Without <![CDATA[ bug is not reproducable
"<NOFRAMES>" +
"]]>" +
" ";
jep.setText(html);
frame.setVisible(true);
}
public void performTest() throws InterruptedException,
InvocationTargetException, AWTException {
Robot robo = new Robot();
robo.waitForIdle();
final int range = 20;
SwingUtilities.invokeAndWait(() -> {
bottom = frame.getLocationOnScreen().y
+ frame.getSize().height - range;
});
for (int i = 0; i < range; i++) {
robo.mouseMove(300, bottom + i);
robo.waitForIdle();
robo.delay(50);
}
}
public void cleanupGUI() {
if (frame != null) {
frame.setVisible(false);
frame.dispose();
}
try {
Files.deleteIfExists(frameContentFile);
} catch (IOException ignore) {}
}
public static void main(String[] args) throws InterruptedException,
InvocationTargetException, AWTException {
bug4694598 app = new bug4694598();
SwingUtilities.invokeAndWait(app::setupGUI);
app.performTest();
SwingUtilities.invokeAndWait(app::cleanupGUI);
}
}