/*
 Copyright 2008-2010 Gephi
 Authors : Eduardo Ramos <eduramiba@gmail.com>
 Website : http://www.gephi.org

 This file is part of Gephi.

 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 Copyright 2011 Gephi Consortium. All rights reserved.

 The contents of this file are subject to the terms of either the GNU
 General Public License Version 3 only ("GPL") or the Common
 Development and Distribution License("CDDL") (collectively, the
 "License"). You may not use this file except in compliance with the
 License. You can obtain a copy of the License at
 http://gephi.org/about/legal/license-notice/
 or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
 specific language governing permissions and limitations under the
 License.  When distributing the software, include this License Header
 Notice in each file and include the License files at
 /cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
 License Header, with the fields enclosed by brackets [] replaced by
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 "Portions Copyrighted [year] [name of copyright owner]"

 If you wish your version of this file to be governed by only the CDDL
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 "[Contributor] elects to include this software in this distribution
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 However, if you add GPL Version 3 code and therefore, elected the GPL
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 Contributor(s):

 Portions Copyrighted 2011 Gephi Consortium.
 */

package org.gephi.datalab.plugin.manipulators.general;

import javax.swing.Icon;
import org.gephi.datalab.api.GraphElementsController;
import org.gephi.datalab.plugin.manipulators.general.ui.AddEdgeToGraphUI;
import org.gephi.datalab.spi.ManipulatorUI;
import org.gephi.datalab.spi.general.GeneralActionsManipulator;
import org.gephi.graph.api.GraphController;
import org.gephi.graph.api.GraphModel;
import org.gephi.graph.api.Node;
import org.openide.util.ImageUtilities;
import org.openide.util.Lookup;
import org.openide.util.NbBundle;
import org.openide.util.lookup.ServiceProvider;

/**
 * GeneralActionsManipulator that adds a new edge to the graph, asking for source and target nodes and type of edge in UI.
 *
 * @author Eduardo Ramos
 */
@ServiceProvider(service = GeneralActionsManipulator.class)
public class AddEdgeToGraph implements GeneralActionsManipulator {

    private Node source = null, target = null;
    private boolean directed;
    private Object edgeTypeLabel = null;
    private GraphModel graphModel = null;

    @Override
    public void execute() {
        if (source != null && target != null) {
            Lookup.getDefault().lookup(GraphElementsController.class)
                .createEdge(source, target, directed, edgeTypeLabel);
        }
    }

    @Override
    public String getName() {
        return NbBundle.getMessage(AddNodeToGraph.class, "AddEdgeToGraph.name");
    }

    @Override
    public String getDescription() {
        return "";
    }

    @Override
    public boolean canExecute() {
        return Lookup.getDefault().lookup(GraphElementsController.class).getNodesCount() > 0;//At least 1 nodes
    }

    @Override
    public ManipulatorUI getUI() {
        GraphModel currentGraphModel = Lookup.getDefault().lookup(GraphController.class).getGraphModel();
        if (graphModel != null && graphModel !=
            currentGraphModel) {//If graph model has changed since last execution, change default mode for edges to create in UI, else keep this parameter across calls
            directed = currentGraphModel.isDirected() ||
                currentGraphModel.isMixed();//Get graph directed state. Set to true if graph is directed or mixed
            graphModel = currentGraphModel;
            source = null;
        }
        return new AddEdgeToGraphUI();
    }

    @Override
    public int getType() {
        return 0;
    }

    @Override
    public int getPosition() {
        return 200;
    }

    @Override
    public Icon getIcon() {
        return ImageUtilities.loadImageIcon("DataLaboratoryPlugin/plus-white.png", false);
    }

    public boolean isDirected() {
        return directed;
    }

    public void setDirected(boolean directed) {
        this.directed = directed;
    }

    public Node getSource() {
        return source;
    }

    public void setSource(Node source) {
        this.source = source;
    }

    public Node getTarget() {
        return target;
    }

    public void setTarget(Node target) {
        this.target = target;
    }

    public Object getEdgeTypeLabel() {
        return edgeTypeLabel;
    }

    public void setEdgeTypeLabel(Object edgeTypeLabel) {
        this.edgeTypeLabel = edgeTypeLabel;
    }
}
