/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2006 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** All rights reserved **
** **
** This program and the accompanying materials are made available under **
** the terms of the Eclipse Public License v1.0 which accompanies this **
** distribution, and is available at: **
** http://www.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal.util;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Widget;
import org.eclipse.ui.progress.UIJob;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* @author bpasero
*/
public class JobRunner {
/* Copied from BusyIndicator */
private static int nextBusyId = 1;
private static final String BUSYID_NAME = "SWT BusyIndicator"; //$NON-NLS-1$
/* Default Delay */
private static final int DELAY = 800;
/**
* @param runnable
* @param widget
*/
public static void runInUIThread(final Widget widget, final Runnable runnable) {
runInUIThread(0, widget, runnable);
}
/**
* @param runnable
* @param widget
*/
public static void runDelayedInUIThread(final Widget widget, final Runnable runnable) {
runInUIThread(DELAY, widget, runnable);
}
/**
* @param delay
* @param runnable
* @param widget
*/
public static void runInUIThread(int delay, final Widget widget, final Runnable runnable) {
Assert.isNotNull(runnable);
UIJob uiJob = new UIJob("UIJob Runner") { //$NON-NLS-1$
@Override
public IStatus runInUIThread(IProgressMonitor monitor) {
if (widget == null || !widget.isDisposed())
runnable.run();
return Status.OK_STATUS;
}
};
uiJob.setSystem(true);
uiJob.setUser(false);
uiJob.schedule(delay);
}
/**
* @param runnable
* @param widget
*/
public static void runSyncedInUIThread(final Widget widget, final Runnable runnable) {
Assert.isNotNull(runnable);
Assert.isNotNull(widget);
if (!widget.isDisposed()) {
widget.getDisplay().syncExec(new Runnable() {
public void run() {
if (!widget.isDisposed())
runnable.run();
}
});
}
}
/**
* @param runnable
*/
public static void runInBackgroundThread(final Runnable runnable) {
runInBackgroundThread(0, runnable);
}
/**
* @param runnable
*/
public static void runDelayedInBackgroundThread(final Runnable runnable) {
runInBackgroundThread(DELAY, runnable);
}
/**
* @param delay
* @param runnable
*/
public static void runInBackgroundThread(int delay, final Runnable runnable) {
Assert.isNotNull(runnable);
Job job = new Job("Job Runner") { //$NON-NLS-1$
@Override
public IStatus run(IProgressMonitor monitor) {
runnable.run();
return Status.OK_STATUS;
}
};
job.setSystem(true);
job.setUser(false);
job.schedule(delay);
}
/**
* @param job
*/
public static void runUIUpdater(UIBackgroundJob job) {
Assert.isNotNull(job);
job.setSystem(true);
job.setUser(false);
job.schedule();
}
/**
* @param runnable
*/
public static void runInBackgroundWithBusyIndicator(final Runnable runnable) {
final Display display = Display.getCurrent();
final Integer busyId = Integer.valueOf(nextBusyId++);
/* Guard against Illegal-Thread-Access */
if (display == null)
throw new IllegalStateException("Method was not called from the UI-Thread!");
/* Set the Cursor */
Cursor cursor = display.getSystemCursor(SWT.CURSOR_APPSTARTING);
Shell[] shells = display.getShells();
for (Shell shell : shells) {
Integer id = (Integer) shell.getData(BUSYID_NAME);
if (id == null) {
shell.setCursor(cursor);
shell.setData(BUSYID_NAME, busyId);
}
}
/* Run the Runnable and update cursor afterwards */
runUIUpdater(new UIBackgroundJob(null) {
@Override
protected void runInBackground(IProgressMonitor monitor) {
runnable.run();
}
@Override
protected void runInUI(IProgressMonitor monitor) {
if (!display.isDisposed()) {
Shell[] shells = display.getShells();
for (Shell shell : shells) {
Integer id = (Integer) shell.getData(BUSYID_NAME);
if (busyId.equals(id)) {
shell.setCursor(null);
shell.setData(BUSYID_NAME, null);
}
}
}
}
});
}
/**
* @param delay
* @param flag
*/
public static void runDelayedFlagInversion(int delay, final AtomicBoolean flag) {
flag.set(!flag.get());
runInBackgroundThread(delay, new Runnable() {
public void run() {
flag.set(!flag.get());
}
});
}
}