/*******************************************************************************
 * Copyright (c) 2007- VTT Technical Research Centre of Finland.
 * 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.proconf.g3d.actions;

import java.util.List;

import org.simantics.db.Graph;
import org.simantics.db.GraphRequestStatus;
import org.simantics.db.Resource;
import org.simantics.layer0.utils.IEntity;
import org.simantics.layer0.utils.EntityFactory;
import org.simantics.proconf.g3d.Activator;
import org.simantics.proconf.g3d.Resources;
import org.simantics.proconf.g3d.base.ThreeDimensionalEditorBase;
import org.simantics.proconf.g3d.common.StructuredResourceSelection;

public class RemoveAction extends WriteAction {
    
    public RemoveAction(ThreeDimensionalEditorBase parent) {
        super(parent,false);
    }
    
    public void init() {
        setText("Remove");
        setToolTipText("Remove the object");
        this.setImageDescriptor(Activator.imageDescriptorFromPlugin(Activator.PLUGIN_ID, "icons/delete.png"));
    }
    public GraphRequestStatus doChanges(Graph graph) {
        StructuredResourceSelection sel = parent.getSelectionAdapter().getCurrentSelection();
        List<Resource> res = sel.getSelectionList();
        for (Resource r : res) {
                IEntity t = EntityFactory.create(graph, r);
                if (t.isInstanceOf(Resources.g3dResource.G3DNode)) {
                    IEntity parentNode = t.getSingleRelatedObject(Resources.g3dResource.HasParent);
                    parentNode.removeStatement(Resources.g3dResource.HasChild, t);
                }

            }
        return GraphRequestStatus.transactionComplete();
     
    }
    
    @Override
    public boolean usable(Graph graph,List<Resource> resources) {
        return resources.size() > 0;
    }

}