Doublebox.java :  » Ajax » zk » org » zkoss » zul » Java Open Source

/* Doublebox.java

  Purpose:
    
  Description:
    
  History:
    Sat Oct 14 12:59:39     2006, Created by henrichen

Copyright (C) 2006 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
  This program is distributed under LGPL Version 3.0 in the hope that
  it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.zul;

import org.zkoss.zk.ui.WrongValueException;

import org.zkoss.zul.mesg.MZul;
import org.zkoss.zul.impl.NumberInputElement;

/**
 * An edit box for holding an float point value (double).
 * <p>Default {@link #getZclass}: z-doublebox.(since 3.5.0)
 *
 * @author henrichen
 */
public class Doublebox extends NumberInputElement implements org.zkoss.zul.api.Doublebox {
  public Doublebox() {
    setCols(11);
  }
  public Doublebox(double value) throws WrongValueException {
    this();
    setValue(value);
  }
  public Doublebox(Double value) throws WrongValueException {
    this();
    setValue(value);
  }

  /** Returns the value (in Double), might be null unless
   * a constraint stops it.
   * @exception WrongValueException if user entered a wrong value
   */
  public Double getValue() throws WrongValueException {
    return (Double)getTargetValue();
  }
  /** Returns the value in double. If null, zero is returned.
   */
  public double doubleValue() throws WrongValueException {
    final Object val = getTargetValue();
    return val != null ? ((Double)val).doubleValue(): 0.0;
  }
  /** Returns the value in integer. If null, zero is returned.
   */
  public int intValue() throws WrongValueException {
    final Object val = getTargetValue();
    return val != null ? ((Double)val).intValue(): 0;
  }
  /** Returns the value in long. If null, zero is returned.
   */
  public long longValue() throws WrongValueException {
    final Object val = getTargetValue();
    return val != null ? ((Double)val).longValue(): 0;
  }
  /** Returns the value in short. If null, zero is returned.
   */
  public short shortValue() throws WrongValueException {
    final Object val = getTargetValue();
    return val != null ? ((Double)val).shortValue(): 0;
  }
  /** Sets the value (in Double).
   * @exception WrongValueException if value is wrong
   */
  public void setValue(Double value) throws WrongValueException {
    validate(value);
    setRawValue(value);
  }
  /** Sets the value (in double)
   * @exception WrongValueException if value is wrong
   */
  public void setValue(double value) throws WrongValueException {
    setValue(new Double(value));
  }

  //-- super --//
  public String getZclass() {
    return _zclass == null ? "z-doublebox" : _zclass;
  }
  protected Object coerceFromString(String value) throws WrongValueException {
    final Object[] vals = toNumberOnly(value);
    final String val = (String)vals[0];
    if (val == null || val.length() == 0)
      return null;

    try {
      double v = Double.parseDouble(val);
      int divscale = vals[1] != null ? ((Integer)vals[1]).intValue(): 0;
      if (divscale > 0)
        v /= Math.pow(10, divscale);
      return new Double(v);
    } catch (NumberFormatException ex) {
      throw showCustomError(
        new WrongValueException(this, MZul.NUMBER_REQUIRED, value));
    }
  }
  protected String coerceToString(Object value) {
    return value != null && getFormat() == null ?
        value.toString(): formatNumber(value, null);
  }
}