PhpmdHandler.java

/*******************************************************************************
 * Copyright (c) 2009, 2010 Dejan Spasic
 * 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
 *******************************************************************************/

package org.phpsrc.eclipse.pti.tools.phpmd.handlers;

import java.util.ArrayList;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.handlers.HandlerUtil;

import org.phpsrc.eclipse.pti.tools.phpmd.PhpmdLog;
import org.phpsrc.eclipse.pti.tools.phpmd.PhpmdPlugin;
import org.phpsrc.eclipse.pti.tools.phpmd.core.IResourceCollector;
import org.phpsrc.eclipse.pti.tools.phpmd.core.ResourceCollectorFactory;
import org.phpsrc.eclipse.pti.tools.phpmd.views.PhpmdView;

public class PhpmdHandler extends AbstractHandler {
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection currentSelection = HandlerUtil.getCurrentSelection(event);
		final IResource resource = determineFirstResourceOrNull(currentSelection);

		if (null == resource) {
			return null;
		}

		Job job = createJob(resource);
		job.schedule();
		
		showPhpmdView(event);

		return null;
	}

	private IResource determineFirstResourceOrNull(ISelection currentSelection) {
		IResourceCollector collector = ResourceCollectorFactory.factory(currentSelection);

		if (null == collector) {
			return null;
		}

		collector.collect();
		ArrayList<IResource> resourceList = collector.getResources();

		if (resourceList.isEmpty()) {
			return null;
		}

		return resourceList.get(0);
	}

	private Job createJob(final IResource resource) {
		Job job = new Job("PHP Mess Detection") {
			protected IStatus run(IProgressMonitor monitor) {
				monitor.beginTask("Begin Mess Detection", 2);

				monitor.worked(1);
				PhpmdPlugin.getDefault().getPhpmd().execute(resource);
				monitor.worked(2);

				return Status.OK_STATUS;
			}
		};

		job.setUser(false);
		return job;
	}
	
	private void showPhpmdView(ExecutionEvent event) {
		IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);

		if (null == window) {
			return;
		}

		IWorkbenchPage page = window.getActivePage();
		
		if (null == page) {
			return;
		}

		try {
			page.showView(PhpmdView.ID);
		}
		catch (PartInitException e) {
			PhpmdLog.logError("Failed to open PHPMD View", e);
		}
	}
}