/*******************************************************************************
* Copyright (c) 2010, 2011 LogSaw project 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:
* LogSaw project committers - initial API and implementation
*******************************************************************************/
package net.sf.logsaw.ui.commands.handlers;
import net.sf.logsaw.ui.editors.ILogViewEditor;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.services.IEvaluationService;
/**
* This handler navigates to the next page of the active <code>LogViewEditor</code>.
*
* @author Philipp Nanz
*/
public class NextPageHandler extends AbstractHandler {
/* (non-Javadoc)
* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
// Get the editor
IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);
IWorkbenchPage page = window.getActivePage();
ILogViewEditor editor =
(ILogViewEditor) page.getActiveEditor().getAdapter(ILogViewEditor.class);
if (editor != null) {
editor.nextPage();
// Request re-evaluation
IEvaluationService service =
(IEvaluationService) window.getService(IEvaluationService.class);
service.requestEvaluation("net.sf.logsaw.ui.expressions.logViewEditor.isPreviousPageAllowed"); //$NON-NLS-1$
service.requestEvaluation("net.sf.logsaw.ui.expressions.logViewEditor.isNextPageAllowed"); //$NON-NLS-1$
}
return null;
}
}