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///////////////////////////////////////////////////////////////////////////////
// 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.tetradapp.model.NoteModel;
import edu.cmu.tetradapp.util.StringTextField;

import javax.swing.*;
import java.awt.*;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;

/**
 * Provides a little display/editor for notes in the session workbench. This may be elaborated in the future to allow
 * marked up text.
 *
 * @author josephramsey
 */
public class NoteEditor extends JPanel {

    /**
     * The model for the note.
     */
    private final NoteModel noteModel;


    /**
     * Constructs the editor given the model
     */
    public NoteEditor(NoteModel noteModel) {
        this.noteModel = noteModel;
        setup();
    }

    //============================ Private Methods =========================//

    private void setup() {
        Font font = new Font("Monospaced", Font.PLAIN, 14);
        JTextPane textPane = new JTextPane(this.noteModel.getNote());
        JTextField field = new StringTextField(this.noteModel.getName(), 20);

        field.setFont(font);
        textPane.setFont(font);
        textPane.setCaretPosition(textPane.getStyledDocument().getLength());

        JScrollPane scroll = new JScrollPane(textPane);
        scroll.setPreferredSize(new Dimension(400, 400));

        field.addFocusListener(new FieldListener(field));

        this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
        this.add(Box.createVerticalStrut(10));

        Box box = Box.createHorizontalBox();
        box.add(new JLabel(" Name: "));
        box.add(field);
        box.add(Box.createHorizontalGlue());

        this.add(box);
        this.add(Box.createVerticalStrut(10));

        Box box1 = Box.createHorizontalBox();
        box1.add(new JLabel(" Note Area: "));
        box1.add(Box.createHorizontalGlue());

        this.add(box1);
        this.add(scroll);
    }

    //============================= Inner Class ============================//

    private class FieldListener extends FocusAdapter {

        private final JTextField field;
        private String current;

        public FieldListener(JTextField field) {
            this.field = field;
            this.current = field.getText();
        }


        public void focusLost(FocusEvent evt) {
            doAction();
        }


        private void doAction() {
            String text = this.field.getText();
            if (this.current.equals(text)) {
                return;
            }
            this.current = text;
            NoteEditor.this.noteModel.setName(text);
            NoteEditor.this.firePropertyChange("changeNodeLabel", null, text);
        }
    }


}