org.eclipse.mylyn.reviews.r4e-gerrit.ui/src/org/eclipse/mylyn/reviews/r4e_gerrit/ui/internal/commands/documentation/RestAPIHandler.java

/*******************************************************************************
 * Copyright (c) 2013 Ericsson
 * 
 * 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
 * 
 * Description:
 * 	This class implements the implementation of the R4E-Gerrit UI REST API 	reviews handler.
 * 
 * Contributors:
 *   Jacques Bouthillier - Initial Implementation of the plug-in handler
 ******************************************************************************/

package org.eclipse.mylyn.reviews.r4e_gerrit.ui.internal.commands.documentation;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.mylyn.reviews.r4e_gerrit.ui.R4EGerritUi;
import org.eclipse.mylyn.reviews.r4e_gerrit.ui.internal.utils.R4EGerritServerUtility;
import org.eclipse.mylyn.reviews.r4e_gerrit.ui.internal.utils.UIUtils;
import org.eclipse.mylyn.reviews.r4egerrit.ui.views.R4EGerritTableView;
import org.osgi.framework.Version;

/**
 * @author Jacques Bouthillier
 * @version $Revision: 1.0 $
 *
 */

public class RestAPIHandler extends AbstractHandler {

	private final String REST_API_DOCUMENTATION = "Documentation/rest-api.html";
	/* (non-Javadoc)
	 * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
	 */
	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		R4EGerritUi.Ftracer.traceInfo("Search the documentation RestAPIHandler  " ); //$NON-NLS-1$
		Version version = R4EGerritTableView.getActiveView().getlastGerritServerVersion();
		//Testing the Gerrit server before getting the documentation
		if (version != null) {
			if (version.getMajor() >= 2) {
				if (version.getMinor() < 5) {
					String msg = "Selected Gerrit server: " + version.toString();
					String reason = "Gerrit server is too old, need at least Gerrit version 2.5 \nto get Gerrit Code Review - REST API documentation.";
					R4EGerritUi.Ftracer.traceInfo(msg );
					UIUtils.showErrorDialog(msg, reason);
					return null;
				}
			}
		}
		
		R4EGerritServerUtility.getInstance().openWebBrowser (REST_API_DOCUMENTATION);
		
		return null;
	}

}