SavePanelDialog.java

/*
   JMeld is a visual diff and merge tool.
   Copyright (C) 2007  Kees Kuip
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   This library 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
   Lesser General Public License for more details.
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA  02110-1301  USA
 */
package org.jmeld.ui;

import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import org.jmeld.JMeldException;
import org.jmeld.ui.text.BufferDocumentIF;
import org.jmeld.util.ObjectUtil;

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;
import java.util.List;

public class SavePanelDialog
{
  // Instance variables:
  private JMeldPanel meldPanel;
  private boolean ok;
  private List<BufferDocumentIF> documents;
  private JCheckBox[] checkBoxes;

  public SavePanelDialog(JMeldPanel meldPanel)
  {
    this.meldPanel = meldPanel;

    documents = new ArrayList<BufferDocumentIF>();
  }

  public void add(BufferDocumentIF document)
  {
    documents.add(document);
  }

  public void show()
  {
    JOptionPane pane;
    JDialog dialog;

    pane = new JOptionPane(getSavePanel(), JOptionPane.WARNING_MESSAGE);
    pane.setOptionType(JOptionPane.OK_CANCEL_OPTION);

    dialog = pane.createDialog(meldPanel, "Save files");
    dialog.setResizable(true);
    try
    {
      dialog.setVisible(true);

      if (ObjectUtil.equals(pane.getValue(), JOptionPane.OK_OPTION))
      {
        ok = true;
      }
    }
    finally
    {
      // Don't allow memoryleaks!
      dialog.dispose();
    }
  }

  public boolean isOK()
  {
    return ok;
  }

  public void doSave()
  {
    BufferDocumentIF document;

    if (checkBoxes == null)
    {
      return;
    }

    for (int i = 0; i < checkBoxes.length; i++)
    {
      if (!checkBoxes[i].isSelected())
      {
        continue;
      }

      document = documents.get(i);
      if (document == null)
      {
        continue;
      }

      try
      {
        document.write();
      }
      catch (JMeldException ex)
      {
        ex.printStackTrace();
        JOptionPane.showMessageDialog(meldPanel, "Can't write file"
                                                 + document.getName(),
          "Problem writing file", JOptionPane.ERROR_MESSAGE);
      }
    }
  }

  private JComponent getSavePanel()
  {
    JPanel panel;
    String columns;
    String rows;
    FormLayout layout;
    CellConstraints cc;
    JLabel label;
    JCheckBox checkBox;
    BufferDocumentIF document;
    Font font;

    columns = "10px, fill:pref, 10px";
    rows = "10px, fill:pref, 5px, fill:pref, 10px,";
    for (int i = 0; i < documents.size(); i++)
    {
      rows += " fill:pref, ";
    }

    rows += " 10px";

    layout = new FormLayout(columns, rows);
    cc = new CellConstraints();

    panel = new JPanel(layout);
    label = new JLabel("Some files have been changed");
    font = label.getFont().deriveFont(Font.BOLD);
    label.setFont(font);
    label.setHorizontalAlignment(JLabel.LEFT);
    panel.add(label, cc.xy(2, 2));
    label = new JLabel("Which ones would you like to save?");
    label.setFont(font);
    label.setHorizontalAlignment(JLabel.LEFT);
    panel.add(label, cc.xy(2, 4));

    checkBoxes = new JCheckBox[documents.size()];
    for (int i = 0; i < documents.size(); i++)
    {
      document = documents.get(i);
      if (document == null)
      {
        continue;
      }

      checkBox = new JCheckBox(document.getName());
      checkBoxes[i] = checkBox;
      if (!document.isChanged())
      {
        checkBox.setEnabled(false);
      }
      else
      {
        checkBox.setSelected(true);
      }

      panel.add(checkBox, cc.xy(2, 6 + i));
    }

    return panel;
  }
}