package org.simantics.district.route.ui.handlers;

import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.widgets.Shell;
import org.simantics.district.route.Route;
import org.simantics.district.route.ui.internal.Activator;
import org.simantics.utils.ui.ISelectionUtils;

/**
 * @author Tuukka Lehtonen
 */
public class DiscardRoute {

    @CanExecute
    public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
        return ISelectionUtils.filterSingleSelection(selection, Route.class) != null;
    }

    @Execute
    public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell activeShell,
            @Named(IServiceConstants.ACTIVE_PART) MPart part,
            @Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
        // get selected route
        Route route = ISelectionUtils.filterSingleSelection(selection, Route.class);
        if (route != null)
            Activator.getDefault().getRouteService().discardRoute(route);
    }

}