MAC OS X Java Swing Mouse Fired Event Does Not Trigger

Question

I had a problem with the release of Java swing mouse, which appears, it seems, only to implement mac os java (there is no such problem in Windows Java).

My configuration: OS X 10.9 Java version: 1.7.0_45, vendor: Oracle Corporation

To redo this problem, run this oracle demo lesson class

public class MouseEventDemo extends JPanel
    implements MouseListener {
BlankArea blankArea;
JTextArea textArea;
static final String NEWLINE = System.getProperty("line.separator");

public static void main(String[] args) {
    /* Use an appropriate Look and Feel */
    try {
        //UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
        //UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
        UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
    } catch (UnsupportedLookAndFeelException ex) {
        ex.printStackTrace();
    } catch (IllegalAccessException ex) {
        ex.printStackTrace();
    } catch (InstantiationException ex) {
        ex.printStackTrace();
    } catch (ClassNotFoundException ex) {
        ex.printStackTrace();
    }
    /* Turn off metal use of bold fonts */
    UIManager.put("swing.boldMetal", Boolean.FALSE);
    //Schedule a job for the event dispatch thread:
    //creating and showing this application GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            createAndShowGUI();
        }
    });
}

/**
 * Create the GUI and show it.  For thread safety,
 * this method should be invoked from the
 * event dispatch thread.
 */
private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("MouseEventDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Create and set up the content pane.
    JComponent newContentPane = new MouseEventDemo();
    newContentPane.setOpaque(true); //content panes must be opaque
    frame.setContentPane(newContentPane);

    //Display the window.
    frame.pack();
    frame.setVisible(true);
}

public MouseEventDemo() {
    super(new GridLayout(0,1));
    blankArea = new BlankArea(Color.YELLOW);
    add(blankArea);
    textArea = new JTextArea();
    textArea.setEditable(false);
    JScrollPane scrollPane = new JScrollPane(textArea);
    scrollPane.setVerticalScrollBarPolicy(
            JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    scrollPane.setPreferredSize(new Dimension(200, 75));
    add(scrollPane);
    TextField tf=new TextField(10);
    add(tf);

    //Register for mouse events on blankArea and the panel.
    blankArea.addMouseListener(this);
    addMouseListener(this);
    setPreferredSize(new Dimension(450, 450));
    setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
}

void eventOutput(String eventDescription, MouseEvent e) {
    textArea.append(eventDescription + " detected on "
            + e.getComponent().getClass().getName()
            + "." + NEWLINE);
    textArea.setCaretPosition(textArea.getDocument().getLength());
}

public void mousePressed(MouseEvent e) {
    eventOutput("Mouse pressed (# of clicks: "
            + e.getClickCount() + ")", e);
}

public void mouseReleased(MouseEvent e) {
    eventOutput("Mouse released (# of clicks: "
            + e.getClickCount() + ")", e);
}

public void mouseEntered(MouseEvent e) {
    eventOutput("Mouse entered", e);
}

public void mouseExited(MouseEvent e) {
    eventOutput("Mouse exited", e);
}

public void mouseClicked(MouseEvent e) {
    eventOutput("Mouse clicked (# of clicks: "
            + e.getClickCount() + ")", e);
}


public class BlankArea extends JLabel {
    Dimension minSize = new Dimension(100, 50);

    public BlankArea(Color color) {
        setBackground(color);
        setOpaque(true);
        setBorder(BorderFactory.createLineBorder(Color.black));
    }

    public Dimension getMinimumSize() {
        return minSize;
    }

    public Dimension getPreferredSize() {
        return minSize;
    }
}
}

The Mouse Release event for BlankArea fires great in all cases except the following:

• Click on an empty space (yellow square)
• Drag the mouse outside the main frame of the application.
• Return the mouse inside the main frame to the text area (not to the empty area of ​​the source).
• Release the mouse button. Result → Mouse release does not start. (Problem with specific OS X)

Thanks for your help in advance.

: TextField . , , TextField, "mouse_released" , TextArea.

Answer 1

Java 6 Mac OS X. , getComponent() " ". , , . Windows , .

: 1.7.0_45 Mac OS X, JDK-8013475.