/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* For information about the authors of this project Have a look
* at the AUTHORS file in the root of this project.
*/
package net.sourceforge.fullsync.ui;
import java.util.Timer;
import java.util.TimerTask;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
/**
* @author <a href="mailto:codewright@gmx.net">Jan Kopcsek</a>
*/
public class SystemStatusPage extends WizardDialog {
private Label totalMemory;
private Label maxMemory;
private Label freeMemory;
private ProgressBar progressBarMemory;
private Timer timer;
private Composite content;
public SystemStatusPage(Shell parent) {
super(parent);
}
@Override
public String getTitle() {
return "System Status";
}
@Override
public String getCaption() {
return "System Status";
}
@Override
public String getDescription() {
return "";
}
@Override
public Image getIcon() {
return null;
}
@Override
public Image getImage() {
return null;
}
@Override
public void createContent(final Composite content) {
this.content = content;
// FIXME: add interesting versions and the system properties used by the launcher,...
// TODO: add a way to report a bug here?
try {
content.setLayout(new GridLayout());
Group groupMemory = new Group(content, SWT.NONE);
groupMemory.setLayout(new GridLayout(2, false));
groupMemory.setText("VM Memory");
progressBarMemory = new ProgressBar(groupMemory, SWT.NONE);
GridData progressBarMemoryLData = new GridData();
progressBarMemoryLData.horizontalAlignment = SWT.FILL;
progressBarMemoryLData.horizontalSpan = 2;
progressBarMemory.setLayoutData(progressBarMemoryLData);
// total memory
Label labelTotalMemory = new Label(groupMemory, SWT.NONE);
labelTotalMemory.setText("Total Memory:");
totalMemory = new Label(groupMemory, SWT.RIGHT);
GridData totalMemoryLData = new GridData();
totalMemoryLData.horizontalAlignment = SWT.FILL;
totalMemory.setLayoutData(totalMemoryLData);
// max memory
Label labelMaxMemory = new Label(groupMemory, SWT.NONE);
labelMaxMemory.setText("Max Memory:");
maxMemory = new Label(groupMemory, SWT.RIGHT);
GridData maxMemoryLData = new GridData();
maxMemoryLData.horizontalAlignment = SWT.FILL;
maxMemory.setLayoutData(maxMemoryLData);
// free memory
Label labelFreeMemory = new Label(groupMemory, SWT.NONE);
labelFreeMemory.setText("Free Memory:");
freeMemory = new Label(groupMemory, SWT.RIGHT);
freeMemory.setText("<free memory>");
GridData freeMemoryLData = new GridData();
freeMemoryLData.horizontalAlignment = SWT.FILL;
freeMemory.setLayoutData(freeMemoryLData);
// gc button
Button buttonMemoryGc = new Button(groupMemory, SWT.PUSH | SWT.CENTER);
buttonMemoryGc.setText("Clean up");
GridData buttonMemoryGcLData = new GridData();
buttonMemoryGc.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent evt) {
System.gc();
}
});
buttonMemoryGcLData.horizontalAlignment = SWT.END;
buttonMemoryGcLData.horizontalSpan = 2;
buttonMemoryGc.setLayoutData(buttonMemoryGcLData);
updateView();
timer = new Timer(true);
timer.schedule(new TimerTask() {
@Override
public void run() {
updateView();
}
}, 1000, 1000);
}
catch (Exception e) {
e.printStackTrace();
}
}
@Override
public boolean apply() {
return true;
}
@Override
public boolean cancel() {
return true;
}
public void updateView() {
if (!content.isDisposed()) {
Display display = getDisplay();
if ((display == null) || display.isDisposed()) {
timer.cancel();
return;
}
final Composite comp = content;
display.syncExec(new Runnable() {
private final String[] units = { "B", "KiB", "MiB", "GiB", "TiB" };
private final long kilo = 1024;
private void setFormattedText(final Label l, final long origValue) {
long unit = 0, value = origValue;
while (value > kilo) {
value /= kilo;
unit++;
}
l.setText(String.valueOf(value) + " " + units[(int) unit]);
}
@Override
public void run() {
Runtime rt = Runtime.getRuntime();
long ltotalMemory = rt.totalMemory();
long lmaxMemory = rt.maxMemory();
long lfreeMemory = rt.freeMemory();
setFormattedText(totalMemory, ltotalMemory);
setFormattedText(maxMemory, lmaxMemory);
setFormattedText(freeMemory, lfreeMemory);
progressBarMemory.setMaximum((int) (ltotalMemory / kilo));
progressBarMemory.setSelection((int) ((ltotalMemory - lfreeMemory) / kilo));
comp.layout();
}
});
}
}
@Override
public void dispose() {
timer.cancel();
super.dispose();
}
}