///////////////////////////////////////////////////////////////////////////////
// For information as to what this class does, see the Javadoc, below.       //
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,       //
// 2007, 2008, 2009, 2010, 2014, 2015, 2022 by Peter Spirtes, Richard        //
// Scheines, Joseph Ramsey, and Clark Glymour.                               //
//                                                                           //
// This program is free software; you can redistribute it and/or modify      //
// it under the terms of the GNU General Public License as published by      //
// the Free Software Foundation; either version 2 of the License, or         //
// (at your option) any later version.                                       //
//                                                                           //
// This program is distributed in the hope that it will be useful,           //
// but WITHOUT ANY WARRANTY; without even the implied warranty of            //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
// GNU General Public License for more details.                              //
//                                                                           //
// You should have received a copy of the GNU General Public License         //
// along with this program; if not, write to the Free Software               //
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA //
///////////////////////////////////////////////////////////////////////////////
package edu.cmu.tetradapp.editor;

import edu.cmu.tetrad.graph.Graph;
import edu.cmu.tetrad.session.DelegatesEditing;
import edu.cmu.tetradapp.model.BayesPmWrapper;
import edu.cmu.tetradapp.workbench.GraphWorkbench;

import javax.swing.*;
import java.awt.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

/**
 * Displays a workbench editing workbench area together with a toolbench for
 * editing tetrad-style graphs.
 *
 * @author Aaron Powers
 * @author josephramsey
 */
public class BayesPmEditor extends JPanel
        implements PropertyChangeListener, DelegatesEditing {

    private final JPanel targetPanel;
    private final BayesPmWrapper wrapper;

    /**
     * The wizard that lets the user edit values.
     */
    private BayesPmEditorWizard wizard;

    /**
     * Constructs a new editor for parameterized models (for now only for Bayes
     * net parameterized models).
     */
    public BayesPmEditor(BayesPmWrapper wrapper) {
        this.wrapper = wrapper;
        setLayout(new BorderLayout());

        this.targetPanel = new JPanel();
        this.targetPanel.setLayout(new BorderLayout());

        setEditorPanel();

        add(this.targetPanel, BorderLayout.CENTER);
        validate();

        if (wrapper.getNumModels() > 1) {
            JComboBox<Integer> comp = new JComboBox<>();

            for (int i = 0; i < wrapper.getNumModels(); i++) {
                comp.addItem(i + 1);
            }

            comp.addActionListener(e -> {
                wrapper.setModelIndex((Integer) comp.getSelectedItem() - 1);
                setEditorPanel();
                validate();
            });

            comp.setMaximumSize(comp.getPreferredSize());

            Box b = Box.createHorizontalBox();
            b.add(new JLabel("Using model"));
            b.add(comp);
            b.add(new JLabel("from "));
            b.add(new JLabel(wrapper.getModelSourceName()));
            b.add(Box.createHorizontalGlue());

            add(b, BorderLayout.NORTH);
        }
    }

    private void setEditorPanel() {
        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());

        if (this.wrapper.getBayesPm().getDag().getNumNodes() == 0) {
            throw new IllegalArgumentException("There are no nodes in that Bayes PM.");
        }

        setLayout(new BorderLayout());

        Graph graph = this.wrapper.getBayesPm().getDag();
        GraphWorkbench workbench = new GraphWorkbench(graph);
        workbench.enableEditing(false);
        BayesPmEditorWizard wizard = new BayesPmEditorWizard(this.wrapper.getBayesPm(), workbench);

        JScrollPane workbenchScroll = new JScrollPane(workbench);
        JScrollPane wizardScroll = new JScrollPane(wizard);

        workbenchScroll.setPreferredSize(new Dimension(450, 450));
        wizardScroll.setPreferredSize(new Dimension(450, 450));

        JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
                workbenchScroll, wizardScroll);
        splitPane.setOneTouchExpandable(true);
        splitPane.setDividerLocation(workbenchScroll.getPreferredSize().width);
        panel.add(splitPane, BorderLayout.CENTER);

        JMenuBar menuBar = new JMenuBar();
        JMenu file = new JMenu("File");
        menuBar.add(file);
//        file.add(new SaveScreenshot(this, true, "Save Screenshot..."));
        file.add(new SaveComponentImage(workbench, "Save Graph Image..."));
        panel.add(menuBar, BorderLayout.NORTH);

        setName("Bayes PM Editor");
        wizard.addPropertyChangeListener(this);

        wizard.setEditingLatentVariablesAllowed(isEditingLatentVariablesAllowed());
        wizard.setEditingMeasuredVariablesAllowed(true);
        this.wizard = wizard;

        this.targetPanel.add(panel, BorderLayout.CENTER);
    }

    /**
     * G
     * Reacts to property change events.
     */
    public void propertyChange(PropertyChangeEvent e) {
        if ("editorClosing".equals(e.getPropertyName())) {
            firePropertyChange("editorClosing", null, getName());
        }

        if ("closeFrame".equals(e.getPropertyName())) {
            firePropertyChange("closeFrame", null, null);
        }

        if ("modelChanged".equals(e.getPropertyName())) {
            firePropertyChange("modelChanged", e.getOldValue(),
                    e.getNewValue());
        }

    }

    /**
     * Sets the name fo the Bayes PM.
     */
    public void setName(String name) {
        String oldName = getName();
        super.setName(name);
        firePropertyChange("name", oldName, getName());
    }

    public JComponent getEditDelegate() {
        return this.wizard;
    }

    /**
     * True iff the editing of latent variables is allowed.
     */
    private boolean isEditingLatentVariablesAllowed() {
        return true;
    }

}
