//
// DoubleOption.java
//

/*
LOCI Plugins for ImageJ: a collection of ImageJ plugins including the
Bio-Formats Importer, Bio-Formats Exporter, Bio-Formats Macro Extensions,
Data Browser and Stack Slicer. Copyright (C) 2005-@year@ Melissa Linkert,
Curtis Rueden and Christopher Peterson.

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 loci.plugins.prefs;

import ij.Macro;
import ij.Prefs;

import java.util.HashMap;

/**
 * A double option for one of the LOCI plugins.
 *
 * <dl><dt><b>Source code:</b></dt>
 * <dd><a href="http://trac.openmicroscopy.org.uk/ome/browser/bioformats.git/components/loci-plugins/src/loci/plugins/prefs/DoubleOption.java">Trac</a>,
 * <a href="http://git.openmicroscopy.org/?p=bioformats.git;a=blob;f=components/loci-plugins/src/loci/plugins/prefs/DoubleOption.java;hb=HEAD">Gitweb</a></dd></dl>
 */
public class DoubleOption extends Option {

  // -- Fields --

  /** The option's default value. */
  protected double defaultValue;

  /** The option's current value. */
  protected double value;

  // -- Constructors --

  /** Constructs a double option with the parameters from the given map. */
  public DoubleOption(HashMap<String, String> entry) {
    this(entry.get(INI_KEY),
      !"false".equals(entry.get(INI_SAVE)), // default behavior is saved
      entry.get(INI_LABEL),
      entry.get(INI_INFO),
      0); // default value is 0
  }

  /** Constructs a double option with the given parameters. */
  public DoubleOption(String key, boolean save, String label,
    String info, double defaultValue)
  {
    super(key, save, label, info);
    this.defaultValue = defaultValue;
    this.value = defaultValue;
  }

  // -- DoubleOption methods --

  /** Gets the default value of the option. */
  public double getDefault() {
    return defaultValue;
  }

  /** Gets the current value of the option. */
  public double getValue() {
    return value;
  }

  /** Sets the current value of the option. */
  public void setValue(double value) {
    this.value = value;
  }

  // -- Option methods --

  /* @see Option#parseOption(String arg) */
  public void parseOption(String arg) {
    String s = Macro.getValue(arg, key, null);
    if (s != null) value = Double.parseDouble(s);
    else if (label != null) {
      s = Macro.getValue(arg, label, null);
      if (s != null) value = Double.parseDouble(s);
    }
  }

  /* @see Option#loadOption() */
  public void loadOption() {
    value = Prefs.get(KEY_PREFIX + key, defaultValue);
  }

  /* @see Option#saveOption() */
  public void saveOption() {
    if (save) Prefs.set(KEY_PREFIX + key, value);
  }

}