*

 * 

 *

 * 

 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun

 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun

// Toolbar presenter like MemoryMeterAction, except:

/** Perform a system garbage collection.

// 1. Does not have a mark etc.

*

// 2. But pressing it runs GC.

* @author   Ian Formanek

// 3. Slim profile fits nicely in the menu bar (at top level).

*/

// 4. Displays textual memory usage directly, not via tooltip.

public class GarbageCollectAction extends CallableSystemAction 

// Intended to be unobtrusive enough to leave on for daily use.

{

	/** generated Serialized Version UID */

/**

	static final long serialVersionUID = -3365766607488094613L;

 * Perform a system garbage collection.

 * @author Jesse Glick

	/* Human presentable name of the action. This should be

 */

	 * presented as an item in a menu.

public class GarbageCollectAction extends CallableSystemAction {

	 * @return the name of the action

	 */

    public String getName() {

	public String getName() 

        return NbBundle.getBundle(GarbageCollectAction.class).getString("CTL_GarbageCollect"); // NOI18N

	{

    }

		return NbBundle.getBundle(GarbageCollectAction.class).getString("CTL_GarbageCollect"); // NOI18N

	}

    public HelpCtx getHelpCtx() {

        return new HelpCtx(GarbageCollectAction.class);

	/* Help context where to find more about the action.

    }

	 * @return the help context for this action

	 */

    public void performAction() {

	public HelpCtx getHelpCtx() 

        gc();

	{

    }

		return new HelpCtx (GarbageCollectAction.class);

	}

    private static void gc() {

        // Can be slow, would prefer not to block on it.

	public void performAction() 

        RequestProcessor.getDefault().post(new Runnable() {

	{

            public void run() {

		System.gc();

                System.gc();

		System.runFinalization();

                System.runFinalization();

		System.gc();

                System.gc();

	}

            }

        });

	/* URL to this action.

    }

	 * @return URL to the action icon

	 */

    protected boolean asynchronous() {

	protected String iconResource () 

        return false;

	{

    }

		return "org/openide/resources/actions/garbageCollect.gif"; // NOI18N

	}

    protected String iconResource() {

        return "org/openide/resources/actions/garbageCollect.gif"; // NOI18N

    }

    public Component getToolbarPresenter() {

        return new MemButton();

    }

    /*

    public static void main(String[] x) {

        javax.swing.JFrame f = new javax.swing.JFrame();

        f.getContentPane().add(new javax.swing.JTextField("Hello world"));

        javax.swing.JMenuBar b = new javax.swing.JMenuBar();

        b.add(new javax.swing.JMenu("Test"));

        b.add(new MemButton());

        f.setJMenuBar(b);

        f.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);

        f.pack();

        f.show();

    }

     */

    private static final class MemButton extends JButton implements ActionListener {

        private static final int TICK = 1000;

        private final Runtime r = Runtime.getRuntime();

        private final Format f = new MessageFormat("{0,number,0.0}/{1,number,0.0}Mb"); // NOI18N

        private final Timer t;

        private double proportion = 0.0d;

        public MemButton() {

            t = new Timer(TICK, this);

            addActionListener(this);

            // To get the size right:

            setText(f.format(new Object[] {new Double(999.0d), new Double(999.0d)}));

            setOpaque(false);

            setBorder(new EmptyBorder(1, 4, 1, 3));

            setPreferredSize(getPreferredSize());

        }

        public void addNotify() {

            super.addNotify();

            t.start();

            update();

        }

        public void removeNotify() {

            t.stop();

            super.removeNotify();

        }

        private void update() {

            long total = r.totalMemory();

            long used = total - r.freeMemory();

            proportion = ((double)used) / total;

            Double _total = new Double(((double)total) / 1024 / 1024);

            Double _used = new Double(((double)used) / 1024 / 1024);

            String text = f.format(new Object[] {_used, _total});

            setText(text);

        }

        protected void paintComponent(Graphics g) {

            Dimension size = getSize();

            g = g.create();

            g.clearRect(0, 0, size.width, size.height);

            g.setColor(UIManager.getDefaults().getColor("Button.focus")); // NOI18N

            g.fillRect(0, 0, (int)(size.width * proportion), size.height);

            super.paintComponent(g);

        }

        public void actionPerformed(ActionEvent e) {

            if (e.getSource() == this) {

                gc();

            } else {

                // Timer

                update();

            }

        }

    }