/**
 * Copyright (c) 2002-2006 IBM Corporation and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: 
 *   IBM - Initial API and implementation
 */
package org.eclipse.xsd.impl;


import java.util.List;

import javax.xml.namespace.QName;

import org.w3c.dom.Element;
import org.w3c.dom.Node;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.xsd.XSDAnnotation;
import org.eclipse.xsd.XSDConcreteComponent;
import org.eclipse.xsd.XSDDiagnostic;
import org.eclipse.xsd.XSDFactory;
import org.eclipse.xsd.XSDFixedFacet;
import org.eclipse.xsd.XSDLengthFacet;
import org.eclipse.xsd.XSDMaxLengthFacet;
import org.eclipse.xsd.XSDMinLengthFacet;
import org.eclipse.xsd.XSDPackage;
import org.eclipse.xsd.XSDSimpleTypeDefinition;
import org.eclipse.xsd.util.XSDConstants;
import org.eclipse.xsd.util.XSDUtil;


/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Length Facet</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.xsd.impl.XSDLengthFacetImpl#getValue <em>Value</em>}</li>
 * </ul>
 *
 * @generated
 */
public class XSDLengthFacetImpl 
  extends XSDFixedFacetImpl 
  implements XSDLengthFacet
{
  /**
   * The default value of the '{@link #getValue() <em>Value</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getValue()
   * @generated
   * @ordered
   */
  protected static final int VALUE_EDEFAULT = 0;

  /**
   * The cached value of the '{@link #getValue() <em>Value</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getValue()
   * @generated
   * @ordered
   */
  protected int value = VALUE_EDEFAULT;

  public static XSDLengthFacet createLengthFacet(Node node)
  {
    if (XSDConstants.nodeType(node) == XSDConstants.LENGTH_ELEMENT)
    {
      XSDLengthFacet xsdLengthFacet = XSDFactory.eINSTANCE.createXSDLengthFacet();
      xsdLengthFacet.setElement((Element)node);
      return xsdLengthFacet;
    }

    return null;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected XSDLengthFacetImpl()
  {
    super();
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  protected EClass eStaticClass()
  {
    return XSDPackage.Literals.XSD_LENGTH_FACET;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public int getValue()
  {
    return value;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setValue(int newValue)
  {
    int oldValue = value;
    value = newValue;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, XSDPackage.XSD_LENGTH_FACET__VALUE, oldValue, value));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public Object eGet(int featureID, boolean resolve, boolean coreType)
  {
    switch (featureID)
    {
      case XSDPackage.XSD_LENGTH_FACET__VALUE:
        return getValue();
    }
    return super.eGet(featureID, resolve, coreType);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eSet(int featureID, Object newValue)
  {
    switch (featureID)
    {
      case XSDPackage.XSD_LENGTH_FACET__VALUE:
        setValue((Integer)newValue);
        return;
    }
    super.eSet(featureID, newValue);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case XSDPackage.XSD_LENGTH_FACET__VALUE:
        setValue(VALUE_EDEFAULT);
        return;
    }
    super.eUnset(featureID);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID)
  {
    switch (featureID)
    {
      case XSDPackage.XSD_LENGTH_FACET__VALUE:
        return value != VALUE_EDEFAULT;
    }
    return super.eIsSet(featureID);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public String toString()
  {
    if (eIsProxy()) return super.toString();

    StringBuffer result = new StringBuffer(super.toString());
    result.append(" (value: ");
    result.append(value);
    result.append(')');
    return result.toString();
  }

  @Override
  public Element createElement()
  {
    Element newElement = createElement(XSDConstants.LENGTH_ELEMENT);
    setElement(newElement);
    return newElement;
  }

  @Override
  public void validate()
  {
    super.validate();

    XSDSimpleTypeDefinition xsdSimpleTypeDefinition = getSimpleTypeDefinition();
    XSDMinLengthFacet xsdMinLengthFacet = xsdSimpleTypeDefinition.getMinLengthFacet();
    XSDMaxLengthFacet xsdMaxLengthFacet = xsdSimpleTypeDefinition.getMaxLengthFacet();
    if (xsdMinLengthFacet != null || xsdMaxLengthFacet != null)
    {
      XSDDiagnostic xsdDiagnostic = 
        reportConstraintViolation
          (XSDConstants.PART2,
           "length-minLength-maxLength",
           getElement(),
           null,
           new Object [] {});
      if (xsdMinLengthFacet != null)
      {
        xsdDiagnostic.getComponents().add(xsdMinLengthFacet);
      }
      if (xsdMaxLengthFacet != null)
      {
        xsdDiagnostic.getComponents().add(xsdMaxLengthFacet);
      }
    }
  }

  @Override
  protected void validateRestriction(XSDFixedFacet xsdFixedFacet)
  {
    if (getValue() != ((XSDLengthFacet)xsdFixedFacet).getValue())
    {
      XSDDiagnostic xsdDiagnostic =
        reportConstraintViolation
          (XSDConstants.PART2,
           "length-valid-restriction",
           getElement(),
           XSDConstants.VALUE_ATTRIBUTE,
           new Object [] { getValue(), xsdFixedFacet.getEffectiveValue(), xsdFixedFacet.getSimpleTypeDefinition().getURI() });
      xsdDiagnostic.getComponents().add(xsdFixedFacet);
    }
  }

  @Override
  protected void changeAttribute(EAttribute eAttribute)
  {
    super.changeAttribute(eAttribute);
    if (eAttribute == XSDPackage.Literals.XSD_FACET__LEXICAL_VALUE)
    {
      if (getLexicalValue() == null)
      {
        setValue(0);
      }
      else
      {
        try
        {
          int newValue = Integer.parseInt(getLexicalValue());
          if (newValue != getValue())
          {
            setValue(newValue);
          }
        }
        catch (NumberFormatException exception)
        {
          setValue(0);
        }
      }
      traverseToRootForAnalysis();
    }
  }

  @Override
  public boolean isConstraintSatisfied(Object value)
  {
    if (value instanceof List<?>)
    {
      return ((List<?>)value).size() == getValue();
    }
    else if (value instanceof String)
    {
      return ((String)value).length() == getValue();
    }
    else if (value instanceof XSDUtil.ByteSequence)
    {
      return ((XSDUtil.ByteSequence)value).getBytes().length == getValue();
    }
    else if (value instanceof QName)
    {
      QName qName = (QName)value;
      int size = qName.getPrefix().length();
      if (size > 0) ++size;
      size += qName.getLocalPart().length();
      return size == getValue();
    }
    else
    {
      return false;
    }
  }

  @Override
  public Object getEffectiveValue()
  {
    return getValue();
  }

  @Override
  public XSDConcreteComponent cloneConcreteComponent(boolean deep, boolean shareDOM)
  {
    XSDLengthFacetImpl clonedLengthFacet =
      (XSDLengthFacetImpl)getXSDFactory().createXSDLengthFacet();
    clonedLengthFacet.isReconciling = true;

    if (getLexicalValue() != null)
    {
      clonedLengthFacet.setLexicalValue(getLexicalValue());
    }
    if (isSetFixed())
    {
      clonedLengthFacet.setFixed(isFixed());
    }

    if (deep)
    {
      if (getAnnotation() != null)
      {
        clonedLengthFacet.setAnnotation((XSDAnnotation)getAnnotation().cloneConcreteComponent(deep, shareDOM));
      }
    }

    if (shareDOM && getElement() != null)
    {
      clonedLengthFacet.setElement(getElement());
    }

    clonedLengthFacet.isReconciling = shareDOM;
    return clonedLengthFacet;
  }
}