/*******************************************************************************
* Copyright (c) 2011 IBM Corporation and others.
* 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.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.ui.navigator.deferred;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.ui.progress.UIJob;
public class LoadingModelUIAnimationJob extends UIJob {
/* we update the animation frame every 250 ms */
private static final long DELAY = 200;
/* the node holding the place for the model (the "Loading ..." in the tree ) */
private LoadingModelNode placeHolder;
private AbstractTreeViewer viewer;
public LoadingModelUIAnimationJob(AbstractTreeViewer viewer,
LoadingModelNode placeHolder) {
super(placeHolder.getText());
this.viewer = viewer;
this.placeHolder = placeHolder;
/*
* this way we don't put alot of noise in the progress view, except for
* power users that turn on "show system jobs" in the view
*/
setSystem(true);
setRule(new NonConflictingRule());
}
public IStatus runInUIThread(IProgressMonitor monitor) {
if (!placeHolder.isDisposed()) {
/* update the animation frame */
viewer.update(placeHolder, null);
/* reschedule for the next animation frame */
schedule(DELAY);
}
return Status.OK_STATUS;
}
}