package org.simantics.district.region.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.Simantics;
import org.simantics.db.request.Write;
import org.simantics.district.region.DiagramRegions;
import org.simantics.district.region.DiagramRegions.DiagramRegion;
import org.simantics.utils.ui.ISelectionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RemoveRegionHandler {

    private static final Logger LOGGER = LoggerFactory.getLogger(RemoveRegionHandler.class);
    public static final String COMMAND_ID = "org.simantics.district.region.ui.command.removeRegion";
    public static final String LABEL = "Remove Region";

    @CanExecute
    public boolean canExecute() {
        return true;
    }

    @Execute
    public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell activeShell,
            @Named(IServiceConstants.ACTIVE_PART) MPart part,
            @Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
        DiagramRegion region = ISelectionUtils.filterSingleSelection(selection, DiagramRegion.class);
        Simantics.getSession().asyncRequest((Write) graph -> {
            DiagramRegions.removeRegion(graph, region.getResource());
        });
    }
}