1 files changed, 54 insertions, 0 deletions
diff --git a/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/navigator/deferred/LoadingModelUIAnimationJob.java b/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/navigator/deferred/LoadingModelUIAnimationJob.java
new file mode 100644
index 00000000..680a91d9
--- /dev/null
+++ b/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/navigator/deferred/LoadingModelUIAnimationJob.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * 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;
+
+	}
+}