ShowInPASTAHandler.java

package ch.hsr.ifs.pasta.plugin.handlers;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;

import ch.hsr.ifs.pasta.ASTView;
import ch.hsr.ifs.pasta.events.PastaEventConstants;

public class ShowInPASTAHandler extends AbstractHandler {

	@Override
	public Object execute(final ExecutionEvent event) throws ExecutionException {

		final ISelection selection = getSelection();
		if (selection instanceof ITextSelection) {
			sendEvent(selection);
		}
		return null;

	}

	private ISelection getSelection() {
		return CUIPlugin.getActivePage().getActiveEditor().getEditorSite().getSelectionProvider().getSelection();
	}

	private void sendEvent(final Object data) {
		final Event selectionEvent = new Event(PastaEventConstants.SHOW_SELECTION, createMap(data));
		final BundleContext ctx = FrameworkUtil.getBundle(ASTView.class).getBundleContext();
		final ServiceReference<?> ref = ctx.getServiceReference(EventAdmin.class.getName());
		if (ref != null) {
			final EventAdmin admin = (EventAdmin) ctx.getService(ref);
			admin.sendEvent(selectionEvent);
			ctx.ungetService(ref);
		}
	}

	private Map<String, Object> createMap(final Object data) {
		final Map<String, Object> map = new HashMap<>();
		map.put(PastaEventConstants.SELECTION, data);
		return map;
	}

}