/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.myfaces.trinidad.validator;
  
  import javax.el.ValueExpression;
  
  import javax.faces.application.FacesMessage;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.el.ValueBinding;
  import javax.faces.validator.Validator;
  import javax.faces.validator.ValidatorException;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFProperty;
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFValidator;
  import org.apache.myfaces.trinidad.bean.FacesBean;
  import org.apache.myfaces.trinidad.bean.PropertyKey;
  import org.apache.myfaces.trinidad.util.ComponentUtils;
  import org.apache.myfaces.trinidad.util.IntegerUtils;
  import org.apache.myfaces.trinidad.util.MessageFactory;
  
  /**
   * <p>Implementation for <code>java.lang.Double</code> values.</p>
   *
   */
  @JSFValidator(configExcluded=true)
  public class DoubleRangeValidator extends javax.faces.validator.DoubleRangeValidator
  {
    
    public static final String VALIDATOR_ID = "org.apache.myfaces.trinidad.DoubleRange";
  
    /**
     * <p>The message identifier of the {@link javax.faces.application.FacesMessage}
     * to be created if the maximum value check fails.  The message format
     * string for this message may optionally include <code>{0}</code>,
     * <code>{1}</code> and <code>{3}</code> placeholders,
     * which will be replaced by user input, component label and configured
     * maximum value.</p>
     */
    public static final String MAXIMUM_MESSAGE_ID =
        "org.apache.myfaces.trinidad.validator.DoubleRangeValidator.MAXIMUM";
  
    /**
     * <p>The message identifier of the {@link javax.faces.application.FacesMessage}
     * to be created if the minimum value check fails.  The message format
     * string for this message may optionally include <code>{0}</code>,
     * <code>{1}</code> and <code>{2}</code> placeholders, which will be replaced
     * by user input, component label and configured minimum value.</p>
     */
    public static final String MINIMUM_MESSAGE_ID =
        "org.apache.myfaces.trinidad.validator.DoubleRangeValidator.MINIMUM";
  
  
    /**
     * <p>The message identifier of the {@link javax.faces.application.FacesMessage}
     * to be created if the maximum or minimum value check fails, and both
     * the maximum and minimum values for this validator have been set.
     * The message format string for this message may optionally include
     * <code>{0}</code>, <code>{1}</code>, <code>{2}</code> and <code>{3}</code>
     * placeholders, which will be replaced by user input, component label,
     * configured minimum value and configured maximum value.</p>
     */
    public static final String NOT_IN_RANGE_MESSAGE_ID =
        "org.apache.myfaces.trinidad.validator.DoubleRangeValidator.NOT_IN_RANGE";
  
    /**
     * <p>The message identifier of the FacesMessage to be created if
     * the value cannot be converted
     */
    public static final String CONVERT_MESSAGE_ID =
        "org.apache.myfaces.trinidad.convert.DoubleConverter.CONVERT";
    
    /**
     * Construct a {@link Validator} with no preconfigured limits.
     */
    public DoubleRangeValidator()
    {
      super();
    }
  
    /**
     * Construct a {@link Validator} with the specified preconfigured
     * limit.
    *
    * @param maximum Maximum value to allow
    */
   public DoubleRangeValidator(double maximum) 
   {
     super(maximum);
   }
 
   /**
    * Construct a {@link Validator} with the specified preconfigured
    * limits.
    *
    * @param maximum Maximum value to allow
    * @param minimum Minimum value to allow
    *
    */
   public DoubleRangeValidator(double maximum, double minimum)
   {
     super(maximum, minimum);
   }
   
   /**
    * Return the maximum value to be enforced by this {@link
    * Validator} or null if it has not been
    * set.
    */
   @JSFProperty
   @Override
   public double getMaximum()
   {
     Object maxDouble = _facesBean.getProperty(_MAXIMUM_KEY);
     if(maxDouble == null)
       maxDouble = _MAXIMUM_KEY.getDefault();
     return ComponentUtils.resolveDouble(maxDouble);
   }
 
   /**
    * Set the maximum value to be enforced by this {@link Validator}.
    *
    * @param maximum The new maximum value
    *
    */
   @Override
   public void setMaximum(double maximum)
   {
     _facesBean.setProperty(_MAXIMUM_KEY, Double.valueOf(maximum));
   }
 
 
   /**
    * Return the minimum value to be enforced by this {@link
    * Validator}, or null if it has not been
    * set.
    */
   @JSFProperty
   @Override
   public double getMinimum()
   {
     Object minDouble = _facesBean.getProperty(_MINIMUM_KEY);
     if(minDouble == null)
       minDouble = _MINIMUM_KEY.getDefault();
     return ComponentUtils.resolveDouble(minDouble);
   }
 
   /**
    * Set the minimum value to be enforced by this {@link Validator}.
    *
    * @param minimum The new minimum value
    *
    */
   @Override
   public void setMinimum(double minimum)
   {
     _facesBean.setProperty(_MINIMUM_KEY, Double.valueOf(minimum));
   }
 
   /**
    * <p>Custom error message to be used, for creating detail part of the
    * {@link FacesMessage}, when input value exceeds the maximum value set.</p>
    * Overrides detail message identified by message id {@link #MAXIMUM_MESSAGE_ID}
    * @param maximumMessageDetail Custom error message.
    */
   public void setMessageDetailMaximum(String maximumMessageDetail)
   {
     _facesBean.setProperty(_MAXIMUM_MESSAGE_DETAIL_KEY, maximumMessageDetail);
   }
 
   /**
    *  <p>Return custom detail error message that was set for creating {@link FacesMessage},
    *  for cases where input value exceeds the <code>maximum</code> value set.</p>
    * @return Custom error message.
    * @see #setMessageDetailMaximum(String)
    */
   @JSFProperty
   public String getMessageDetailMaximum()
   {
     Object maxMsgDet = _facesBean.getProperty(_MAXIMUM_MESSAGE_DETAIL_KEY);
     return ComponentUtils.resolveString(maxMsgDet);
   }
 
   /**
    * <p>Custom error message to be used, for creating detail part of the
    * {@link FacesMessage}, when input value is less the set
    * <code>minimum</code> value.</p>
    * Overrides detail message identified by message id {@link #MINIMUM_MESSAGE_ID}
    * @param minimumMessageDetail Custom error message.
    */
   public void setMessageDetailMinimum(String minimumMessageDetail)
   {
     _facesBean.setProperty(_MINIMUM_MESSAGE_DETAIL_KEY, minimumMessageDetail);
   }
 
   /**
    * <p>Return custom detail error message that was set for creating {@link FacesMessage},
    * for cases where, input value is less than the <code>minimum</code> value set.</p>
    * @return Custom error message.
    * @see #setMessageDetailMinimum(String)
    */
   @JSFProperty
   public String getMessageDetailMinimum()
   {
     Object minMsgDet = _facesBean.getProperty(_MINIMUM_MESSAGE_DETAIL_KEY);
     return ComponentUtils.resolveString(minMsgDet);
   }
 
   /**
    * <p>Custom error message to be used, for creating detail part of the
    * {@link FacesMessage}, when input value is not with in the range,
    * when <code>minimum</code> and <code>maximum</code> is set.</p>
    * Overrides detail message identified by message id {@link #NOT_IN_RANGE_MESSAGE_ID}
    * @param notInRangeMessageDetail Custom error message.
    */
   public void setMessageDetailNotInRange(String notInRangeMessageDetail)
   {
     _facesBean.setProperty(_NOT_IN_RANGE_MESSAGE_DETAIL_KEY, notInRangeMessageDetail);
   }
 
   /**
    * <p>Return custom detail error message that was set for creating {@link FacesMessage},
    * for cases where, input value exceeds the <code>maximum</code> value and is
    * less than the <code>minimum</code> value set.</p>
    * @return Custom error message.
    * @see #setMessageDetailNotInRange(String)
    */
   @JSFProperty
   public String getMessageDetailNotInRange()
   {
     Object notInRngMsg = _facesBean.getProperty(_NOT_IN_RANGE_MESSAGE_DETAIL_KEY);
     return ComponentUtils.resolveString(notInRngMsg);
   }
 
   /**
    * <p>Custom hint maximum message.</p>
    * Overrides default hint message
    * @param hintMaximum Custom hint message.
    */
   public void setHintMaximum(String hintMaximum)
   {
     _facesBean.setProperty(_HINT_MAXIMUM_KEY, hintMaximum);
   }
 
   /**
    * <p>Return custom hint maximum message.</p>
    * @return Custom hint message.
    * @see  #setHintMaximum(String)
    */
   @JSFProperty(tagExcluded=true)
   public String getHintMaximum()
   {
     Object obj = _facesBean.getProperty(_HINT_MAXIMUM_KEY);
     return ComponentUtils.resolveString(obj);
   }
 
   /**
    * <p>Custom hint minimum message.</p>
    * Overrides default hint message
    * @param hintMinimum Custom hint message.
    */
   @JSFProperty(tagExcluded=true)
   public void setHintMinimum(String hintMinimum)
   {
     _facesBean.setProperty(_HINT_MINIMUM_KEY, hintMinimum);
   }
 
   /**
    * <p>Return custom hint minimum message.</p>
    * @return Custom hint message.
    * @see  #setHintMinimum(String)
    */
   public String getHintMinimum()
   {
     Object obj = _facesBean.getProperty(_HINT_MINIMUM_KEY);
     return ComponentUtils.resolveString(obj);
   }
 
   /**
    * <p>Custom hint notInRange message.</p>
    * Overrides default hint message
    * @param hintNotInRange Custom hint message.
    */
   public void setHintNotInRange(String hintNotInRange)
   {
     _facesBean.setProperty(_HINT_NOT_IN_RANGE, hintNotInRange);
   }
 
   /**
    * <p>Return custom hint notInRange message.</p>
    * @return Custom hint message.
    * @see  #setHintNotInRange
    */
   @JSFProperty(tagExcluded=true)
   public String getHintNotInRange()
   {
     Object obj = _facesBean.getProperty(_HINT_NOT_IN_RANGE);
     return ComponentUtils.resolveString(obj);
   }
 
   @Override
   public void validate(
     FacesContext context,
     UIComponent component,
     Object value
     ) throws ValidatorException
   {
     if (isDisabled())
       return;
     
     if ((context == null) || (component == null))
     {
       throw new NullPointerException();
     }
 
     if (value == null)
     {
       return;
     }
     
     try
     {
       double doubleValue = _convertValueToDouble(value); 
       double min = getMinimum();
       double max = getMaximum();
 
       if(isMaximumSet() && isMinimumSet())
       {
         if(doubleValue < min || doubleValue > max)
         {
           throw new ValidatorException(
             _getNotInRangeMessage(context, component, value, min, max));
         }
       }
       
       if(isMaximumSet())
       {
         if (doubleValue > max)
         {
           throw new ValidatorException(
             _getMaximumMessage(context, component, value, max));
         }
       }
       
       if(isMinimumSet())
       {
         if (doubleValue < min)
         {
           throw new ValidatorException(
             _getMinimumMessage(context, component, value, min));
         }
       }
     }
     catch (NumberFormatException nfe)
     {
       FacesMessage msg = _getNotCorrectType(context);
       throw new ValidatorException(msg);
     }
   }
 
   //  StateHolder Methods
   @Override
   public Object saveState(FacesContext context)
   {
     return _facesBean.saveState(context);
   }
 
 
   @Override
   public void restoreState(FacesContext context, Object state)
   {
     _facesBean.restoreState(context, state);
   }
 
   /**
    * <p>Set the {@link ValueExpression} used to calculate the value for the
    * specified attribute if any.</p>
    *
    * @param name Name of the attribute for which to set a {@link ValueExpression}
    * @param expression The {@link ValueExpression} to set, or <code>null</code>
    *  to remove any currently set {@link ValueExpression}
    *
    * @exception NullPointerException if <code>name</code>
    *  is <code>null</code>
    * @exception IllegalArgumentException if <code>name</code> is not a valid
    *            attribute of this converter
    */
   public void setValueExpression(String name, ValueExpression expression)
   {
     ValidatorUtils.setValueExpression(_facesBean, name, expression) ;
   }
 
 
   /**
    * <p>Return the {@link ValueExpression} used to calculate the value for the
    * specified attribute name, if any.</p>
    *
    * @param name Name of the attribute or property for which to retrieve a
    *  {@link ValueExpression}
    *
    * @exception NullPointerException if <code>name</code>
    *  is <code>null</code>
    * @exception IllegalArgumentException if <code>name</code> is not a valid
    * attribute of this converter
    */
   public ValueExpression getValueExpression(String name)
   {
     return ValidatorUtils.getValueExpression(_facesBean, name);
   }
 
 
   /**
    * <p>Set the {@link ValueBinding} used to calculate the value for the
    * specified attribute if any.</p>
    *
    * @param name Name of the attribute for which to set a {@link ValueBinding}
    * @param binding The {@link ValueBinding} to set, or <code>null</code>
    *  to remove any currently set {@link ValueBinding}
    *
    * @exception NullPointerException if <code>name</code>
    *  is <code>null</code>
    * @exception IllegalArgumentException if <code>name</code> is not a valid
    *            attribute of this validator
    * @deprecated
    */
   public void setValueBinding(String name, ValueBinding binding)
   {
     ValidatorUtils.setValueBinding(_facesBean, name, binding) ;
   }
 
   /**
    * <p>Return the {@link ValueBinding} used to calculate the value for the
    * specified attribute name, if any.</p>
    *
    * @param name Name of the attribute or property for which to retrieve a
    *  {@link ValueBinding}
    *
    * @exception NullPointerException if <code>name</code>
    *  is <code>null</code>
    * @exception IllegalArgumentException if <code>name</code> is not a valid
    * attribute of this validator
    * @deprecated
    */
   public ValueBinding getValueBinding(String name)
   {
     return ValidatorUtils.getValueBinding(_facesBean, name);
   }
   
   @JSFProperty(istransient=true, tagExcluded=true)
   @Override
   public boolean isTransient()
   {
     return (_transientValue);
   }
 
   @Override
   public void setTransient(boolean transientValue)
   {
     _transientValue = transientValue;
   }
 
   @Override
   public boolean equals(Object otherObj) {
     if (!(otherObj instanceof DoubleRangeValidator)) 
     {
       return false;
     }
       
     DoubleRangeValidator other = (DoubleRangeValidator) otherObj;
     
     return ((this.getMaximum() == other.getMaximum())
             && (this.getMinimum() == other.getMinimum())
             && (this.isMaximumSet() == other.isMaximumSet())
             && (this.isMinimumSet() == other.isMinimumSet())
             && (this.isDisabled() == other.isDisabled())
             && (this.isTransient() == other.isTransient()));
   }
 
   @Override
   public int hashCode() {
     int result = 17;
     Object maxMsgDet        =  getMessageDetailMaximum();
     Object minMsgDet        =  getMessageDetailMinimum();
     Object notInRangeMsgDet =  getMessageDetailNotInRange();
     
     result = result * 37 + (isDisabled() ? 1 : 0);
     result = result * 37 + (isTransient() ? 1 : 0);
     result = result * 37 + Double.valueOf(this.getMinimum()).hashCode(); 
     result = result * 37 + Double.valueOf(this.getMaximum()).hashCode();
     result = result * 37 + Boolean.valueOf(isMinimumSet()).hashCode();
     result = result * 37 + Boolean.valueOf(isMaximumSet()).hashCode();
     result = result * 37 + ( maxMsgDet == null ? 0 : maxMsgDet.hashCode());
     result = result * 37 + ( minMsgDet == null ? 0 : minMsgDet.hashCode());
     result = result * 37 + ( notInRangeMsgDet == null ? 0 : notInRangeMsgDet.hashCode());
     
     return result;
   }
 
   /**
     * Return whether it is disabled.
     * @return true if it's disabled and false if it's enabled. 
     */ 
   public void setDisabled(boolean isDisabled)
   {
     _facesBean.setProperty(_DISABLED_KEY, Boolean.valueOf(isDisabled));
   }
 
   /**
     * Return whether it is disabled.
     * @return true if it's disabled and false if it's enabled. 
     */  
   public boolean isDisabled()
   {
     Boolean disabled = (Boolean) _facesBean.getProperty(_DISABLED_KEY);
     
     return (disabled != null) ? disabled.booleanValue() : false;
   }  
 
   protected boolean isMaximumSet()
   {
     return _facesBean.getProperty(_MAXIMUM_KEY) != null;
   }
 
   protected boolean isMinimumSet()
   {
     return _facesBean.getProperty(_MINIMUM_KEY) != null;
   }
 
   private FacesMessage _getNotCorrectType(
     FacesContext context)
   {
     return MessageFactory.getMessage(context, CONVERT_MESSAGE_ID);
   }
 
   /**
    * Try to call doubleValue() from java.lang.Number. Since not all
    * "number" implement java.lang.Number, we try to call string
    * and parse the String representation of the "number". If that fails
    * we aren't working with a number so we throw a NumberFormatException  
    * 
    * @param value the number value
    * @return parsed number value
    * @throws NumberFormatException if the value is not a number
    */
   private double _convertValueToDouble(Object value) throws NumberFormatException
   {
     if(value instanceof Number)
     {
       return ((Number)value).doubleValue();
     }
     else
     {
       return Double.parseDouble(value.toString());
     }
   }
 
   private FacesMessage _getNotInRangeMessage(
     FacesContext context,
     UIComponent component,
     Object value,
     Object min,
     Object max)
   {
       Object msg   = _getRawNotInRangeMessageDetail();
       Object label = ValidatorUtils.getComponentLabel(component);
 
       Object[] params = {label, value, min, max};
 
       return MessageFactory.getMessage(context, NOT_IN_RANGE_MESSAGE_ID,
                                         msg, params, component);
   }
 
 
     
     private Object _getRawNotInRangeMessageDetail()
     {
       return _facesBean.getRawProperty(_NOT_IN_RANGE_MESSAGE_DETAIL_KEY);
     }
 
 
     private FacesMessage _getMaximumMessage(
       FacesContext context,
       UIComponent component,
       Object value,
       Object max)
     {
 
       Object msg   = _getRawMaximumMessageDetail();
       Object label = ValidatorUtils.getComponentLabel(component);
 
       Object[] params = {label, value, max};
 
       return MessageFactory.getMessage(context,
                                        MAXIMUM_MESSAGE_ID,
                                        msg,
                                        params,
                                        component);
     }
 
     private Object _getRawMaximumMessageDetail()
     {
       return _facesBean.getRawProperty(_MAXIMUM_MESSAGE_DETAIL_KEY);
     }
 
     private FacesMessage _getMinimumMessage(
       FacesContext context,
       UIComponent component,
       Object value,
       Object min)
     {
       Object msg      = _getRawMinimumMessageDetail();
       Object label    = ValidatorUtils.getComponentLabel(component);
 
       Object[] params = {label, value, min};
 
       return MessageFactory.getMessage(context, MINIMUM_MESSAGE_ID,
                                        msg, params, component);
     }
 
     private Object _getRawMinimumMessageDetail()
     {
       return _facesBean.getRawProperty(_MINIMUM_MESSAGE_DETAIL_KEY);
     }
 
   private static final FacesBean.Type _TYPE = new FacesBean.Type();
 
   private static final PropertyKey _MINIMUM_KEY =
     _TYPE.registerKey("minimum", Double.class,
                                  // Don't rely on autoboxing: there's a method overload
                                  Double.valueOf(Double.MIN_VALUE));
 
   private static final PropertyKey _MAXIMUM_KEY =
     _TYPE.registerKey("maximum", Double.class,
                                  // Don't rely on autoboxing: there's a method overload
                                  Double.valueOf(Double.MAX_VALUE));
 
   private static final PropertyKey _MAXIMUM_MESSAGE_DETAIL_KEY =
     _TYPE.registerKey("messageDetailMaximum", String.class);
 
   private static final PropertyKey _MINIMUM_MESSAGE_DETAIL_KEY =
     _TYPE.registerKey("messageDetailMinimum", String.class);
 
   private static final PropertyKey _NOT_IN_RANGE_MESSAGE_DETAIL_KEY =
     _TYPE.registerKey("messageDetailNotInRange", String.class);
 
   private static final PropertyKey  _HINT_MAXIMUM_KEY =
     _TYPE.registerKey("hintMaximum", String.class);
 
   private static final PropertyKey  _HINT_MINIMUM_KEY =
     _TYPE.registerKey("hintMinimum", String.class);
 
   private static final PropertyKey  _HINT_NOT_IN_RANGE =
     _TYPE.registerKey("hintNotInRange", String.class);
   
   // Default is false
   private static final PropertyKey _DISABLED_KEY =
     _TYPE.registerKey("disabled", Boolean.class, Boolean.FALSE);
 
   private FacesBean _facesBean = ValidatorUtils.getFacesBean(_TYPE);
 
   private boolean _transientValue = false;
 }