/*
 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
 * Copyright (C) $$Year-Rel$$ The Jalview Authors
 * 
 * This file is part of Jalview.
 * 
 * Jalview 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 3
 * of the License, or (at your option) any later version.
 *  
 * Jalview 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
 * The Jalview Authors are detailed in the 'AUTHORS' file.
 */
package jalview.jbgui;

import jalview.datamodel.AlignmentI;
import jalview.io.DataSourceType;
import jalview.io.FileFormat;
import jalview.io.FormatAdapter;
import jalview.io.cache.JvCacheableInputBox;
import jalview.util.MessageManager;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.text.JTextComponent;

public class GFinder extends JPanel
{
  private static final java.awt.Font VERDANA_12 = new java.awt.Font("Verdana", 0,
          12);

  private static final String FINDER_CACHE_KEY = "CACHE.FINDER";

  protected JButton createFeatures = new JButton();

  protected JvCacheableInputBox<String> searchBox = new JvCacheableInputBox<>(
          getCacheKey());

  protected JCheckBox caseSensitive = new JCheckBox();

  protected JCheckBox searchDescription = new JCheckBox();

  public GFinder()
  {
    try
    {
      jbInit();
    } catch (Exception e)
    {
      e.printStackTrace();
    }
  }

  private void jbInit() throws Exception
  {
    BorderLayout mainBorderLayout = new BorderLayout();
    this.setLayout(mainBorderLayout);
    mainBorderLayout.setHgap(5);
    mainBorderLayout.setVgap(5);

    JLabel jLabelFind = new JLabel(MessageManager.getString("label.find"));
    jLabelFind.setFont(VERDANA_12);

    JButton findAll = new JButton(
            MessageManager.getString("action.find_all"));
    findAll.setFont(VERDANA_12);
    findAll.addActionListener(new java.awt.event.ActionListener()
    {
      @Override
      public void actionPerformed(ActionEvent e)
      {
        findAll_actionPerformed();
      }
    });

    JButton findNext = new JButton(
            MessageManager.getString("action.find_next"));
    findNext.setFont(VERDANA_12);
    findNext.addActionListener(new java.awt.event.ActionListener()
    {
      @Override
      public void actionPerformed(ActionEvent e)
      {
        findNext_actionPerformed();
      }
    });

    JPanel actionsPanel = new JPanel();
    GridLayout gridLayout1 = new GridLayout();
    actionsPanel.setLayout(gridLayout1);
    gridLayout1.setHgap(0);
    gridLayout1.setRows(3);
    gridLayout1.setVgap(2);

    createFeatures.setEnabled(false);
    createFeatures.setFont(VERDANA_12);
    createFeatures.setMargin(new Insets(0, 0, 0, 0));
    createFeatures.setText(MessageManager.getString("label.new_feature"));
    createFeatures.addActionListener(new java.awt.event.ActionListener()
    {
      @Override
      public void actionPerformed(ActionEvent e)
      {
        createFeatures_actionPerformed();
      }
    });
    searchBox.setFont(new java.awt.Font("Verdana", Font.PLAIN, 12));
    ((JTextComponent) searchBox.getEditor().getEditorComponent())
            .addCaretListener(new CaretListener()
            {
              @Override
              public void caretUpdate(CaretEvent e)
              {
                textfield_caretUpdate();
              }
            });
    searchBox.getEditor().getEditorComponent()
            .addKeyListener(new java.awt.event.KeyAdapter()
            {
              @Override
              public void keyPressed(KeyEvent e)
              {
                textfield_keyPressed(e);
              }
            });

    caseSensitive.setHorizontalAlignment(SwingConstants.LEFT);
    caseSensitive.setText(MessageManager.getString("label.match_case"));

    searchDescription
            .setText(MessageManager.getString("label.include_description"));

    actionsPanel.add(findNext, null);
    actionsPanel.add(findAll, null);
    actionsPanel.add(createFeatures, null);
    this.add(jLabelFind, java.awt.BorderLayout.WEST);
    this.add(actionsPanel, java.awt.BorderLayout.EAST);

    JPanel jPanel2 = new JPanel();
    jPanel2.setPreferredSize(new Dimension(10, 1));
    JPanel jPanel3 = new JPanel();
    jPanel3.setPreferredSize(new Dimension(10, 1));
    JPanel jPanel4 = new JPanel();
    jPanel4.setLayout(new BorderLayout());
    this.add(jPanel2, java.awt.BorderLayout.SOUTH);
    this.add(jPanel3, java.awt.BorderLayout.NORTH);
    this.add(jPanel4, java.awt.BorderLayout.CENTER);
    jPanel4.add(searchBox, java.awt.BorderLayout.NORTH);

    JPanel optionsPanel = new JPanel();

    GridLayout optionsGridLayout = new GridLayout();
    optionsGridLayout.setHgap(0);
    optionsGridLayout.setRows(2);
    optionsGridLayout.setVgap(2);
    optionsPanel.setLayout(optionsGridLayout);
    optionsPanel.add(caseSensitive, null);
    optionsPanel.add(searchDescription, null);

    jPanel4.add(optionsPanel, java.awt.BorderLayout.WEST);
  }

  protected void textfield_keyPressed(KeyEvent e)
  {
    if (e.getKeyCode() == KeyEvent.VK_ENTER)
    {
      if (!searchBox.isPopupVisible())
      {
        e.consume();
        findNext_actionPerformed();
      }
    }
  }

  protected void findNext_actionPerformed()
  {
  }

  protected void findAll_actionPerformed()
  {
  }

  public void createFeatures_actionPerformed()
  {
  }

  public void textfield_caretUpdate()
  {
    // disabled as appears to be running a non-functional
    if (false && searchBox.getUserInput().indexOf(">") > -1)
    {
      SwingUtilities.invokeLater(new Runnable()
      {
        @Override
        public void run()
        {
          String str = searchBox.getUserInput();
          AlignmentI al = null;
          try
          {
            al = new FormatAdapter().readFile(str, DataSourceType.PASTE,
                    FileFormat.Fasta);
          } catch (Exception ex)
          {
          }
          if (al != null && al.getHeight() > 0)
          {
            str = jalview.analysis.AlignSeq.extractGaps(
                    jalview.util.Comparison.GapChars,
                    al.getSequenceAt(0).getSequenceAsString());
            // todo and what? set str as searchBox text?
          }
        }
      });
    }
  }

  /**
   * Returns unique key used for storing Finder cache items in the cache data
   * structure
   * 
   * @return
   */
  public String getCacheKey()
  {
    return FINDER_CACHE_KEY;
  }

}