/*******************************************************************************
 * Copyright (c) 2004, 2007 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 Corp. - Rational Software - initial implementation
 *     Markus Schorn (Wind River Systems)
 *     Ed Swartz (Nokia)
 *******************************************************************************/
package org.eclipse.cdt.internal.ui.util;

import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.IViewSite;
import org.eclipse.ui.IWorkbenchSite;

import org.eclipse.cdt.ui.CUIPlugin;

/**
 * Utilities for clearing and setting status line.  Client should
 * invoke {@link #clearStatusLine(IWorkbenchSite)} before an operation
 * and invoke {@link #showStatusLineMessage(IWorkbenchSite, String)} on
 * error.
 * @author eswartz
 *
 */
public abstract class StatusLineHandler {
	public static void showStatusLineMessage(final IWorkbenchSite site, final String message) {
		// run the code to update the status line on the Display thread
		// this way any other thread can invoke operationNotAvailable(String)
		CUIPlugin.getStandardDisplay().asyncExec(new Runnable(){
			/* (non-Javadoc)
			 * @see java.lang.Runnable#run()
			 */
			public void run() {
				IStatusLineManager statusManager = null;
				 if (site instanceof IViewSite){
				 	statusManager = ((IViewSite) site).getActionBars().getStatusLineManager();
				 }
				 else if (site instanceof IEditorSite){
				 	statusManager = ((IEditorSite) site).getActionBars().getStatusLineManager();
				 }	
				 if( statusManager != null )
				 	statusManager.setErrorMessage(message);
			}
		});
	}
	public static void clearStatusLine(final IWorkbenchSite site) {
		// run the code to update the status line on the Display thread
		// this way any other thread can invoke clearStatusLine()
		CUIPlugin.getStandardDisplay().asyncExec(new Runnable(){
			/* (non-Javadoc)
			 * @see java.lang.Runnable#run()
			 */
			public void run() {
				IStatusLineManager statusManager = null;
				 if (site instanceof IViewSite){
				 	statusManager = ((IViewSite) site).getActionBars().getStatusLineManager();
				 }
				 else if (site instanceof IEditorSite){
				 	statusManager = ((IEditorSite) site).getActionBars().getStatusLineManager();
				 }	
				 if( statusManager != null )
				 	statusManager.setErrorMessage( "" ); //$NON-NLS-1$
			}
		});
	}

}