/**
 * This is my code.
 */
package org.examples.library.elements.impl;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.impl.EObjectImpl;

import org.examples.library.elements.Book;
import org.examples.library.elements.BookCategory;
import org.examples.library.elements.ElementsPackage;
import org.examples.library.elements.Writer;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Book</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.examples.library.elements.impl.BookImpl#getTitle <em>Title</em>}</li>
 *   <li>{@link org.examples.library.elements.impl.BookImpl#getPages <em>Pages</em>}</li>
 *   <li>{@link org.examples.library.elements.impl.BookImpl#getCategory <em>Category</em>}</li>
 *   <li>{@link org.examples.library.elements.impl.BookImpl#getAuthor <em>Author</em>}</li>
 * </ul>
 *
 * @generated
 */
public class BookImpl extends EObjectImpl implements Book
{
  /**
   * The default value of the '{@link #getTitle() <em>Title</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getTitle()
   * @generated
   * @ordered
   */
  protected static final String TITLE_EDEFAULT = null;

  /**
   * The cached value of the '{@link #getTitle() <em>Title</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getTitle()
   * @generated
   * @ordered
   */
  protected String title = TITLE_EDEFAULT;

  /**
   * The default value of the '{@link #getPages() <em>Pages</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getPages()
   * @generated
   * @ordered
   */
  protected static final int PAGES_EDEFAULT = 0;

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

  /**
   * This is true if the Pages attribute has been set.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   * @ordered
   */
  protected boolean pagesESet;

  /**
   * The default value of the '{@link #getCategory() <em>Category</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getCategory()
   * @generated
   * @ordered
   */
  protected static final BookCategory CATEGORY_EDEFAULT = BookCategory.MYSTERY;

  /**
   * The cached value of the '{@link #getCategory() <em>Category</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getCategory()
   * @generated
   * @ordered
   */
  protected BookCategory category = CATEGORY_EDEFAULT;

  /**
   * This is true if the Category attribute has been set.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   * @ordered
   */
  protected boolean categoryESet;

  /**
   * The cached value of the '{@link #getAuthor() <em>Author</em>}' reference.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getAuthor()
   * @generated
   * @ordered
   */
  protected Writer author;

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

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public String getTitle()
  {
    return title;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setTitle(String newTitle)
  {
    String oldTitle = title;
    title = newTitle;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, ElementsPackage.BOOK__TITLE, oldTitle, title));
  }

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setPages(int newPages)
  {
    int oldPages = pages;
    pages = newPages;
    boolean oldPagesESet = pagesESet;
    pagesESet = true;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, ElementsPackage.BOOK__PAGES, oldPages, pages, !oldPagesESet));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void unsetPages()
  {
    int oldPages = pages;
    boolean oldPagesESet = pagesESet;
    pages = PAGES_EDEFAULT;
    pagesESet = false;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.UNSET, ElementsPackage.BOOK__PAGES, oldPages, PAGES_EDEFAULT, oldPagesESet));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public boolean isSetPages()
  {
    return pagesESet;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public BookCategory getCategory()
  {
    return category;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setCategory(BookCategory newCategory)
  {
    BookCategory oldCategory = category;
    category = newCategory == null ? CATEGORY_EDEFAULT : newCategory;
    boolean oldCategoryESet = categoryESet;
    categoryESet = true;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, ElementsPackage.BOOK__CATEGORY, oldCategory, category, !oldCategoryESet));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void unsetCategory()
  {
    BookCategory oldCategory = category;
    boolean oldCategoryESet = categoryESet;
    category = CATEGORY_EDEFAULT;
    categoryESet = false;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.UNSET, ElementsPackage.BOOK__CATEGORY, oldCategory, CATEGORY_EDEFAULT, oldCategoryESet));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public boolean isSetCategory()
  {
    return categoryESet;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public Writer getAuthor()
  {
    if (author != null && author.eIsProxy())
    {
      InternalEObject oldAuthor = (InternalEObject)author;
      author = (Writer)eResolveProxy(oldAuthor);
      if (author != oldAuthor)
      {
        if (eNotificationRequired())
          eNotify(new ENotificationImpl(this, Notification.RESOLVE, ElementsPackage.BOOK__AUTHOR, oldAuthor, author));
      }
    }
    return author;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public Writer basicGetAuthor()
  {
    return author;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public NotificationChain basicSetAuthor(Writer newAuthor, NotificationChain msgs)
  {
    Writer oldAuthor = author;
    author = newAuthor;
    if (eNotificationRequired())
    {
      ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, ElementsPackage.BOOK__AUTHOR, oldAuthor, newAuthor);
      if (msgs == null) msgs = notification; else msgs.add(notification);
    }
    return msgs;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setAuthor(Writer newAuthor)
  {
    if (newAuthor != author)
    {
      NotificationChain msgs = null;
      if (author != null)
        msgs = ((InternalEObject)author).eInverseRemove(this, ElementsPackage.WRITER__BOOKS, Writer.class, msgs);
      if (newAuthor != null)
        msgs = ((InternalEObject)newAuthor).eInverseAdd(this, ElementsPackage.WRITER__BOOKS, Writer.class, msgs);
      msgs = basicSetAuthor(newAuthor, msgs);
      if (msgs != null) msgs.dispatch();
    }
    else if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, ElementsPackage.BOOK__AUTHOR, newAuthor, newAuthor));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__AUTHOR:
        if (author != null)
          msgs = ((InternalEObject)author).eInverseRemove(this, ElementsPackage.WRITER__BOOKS, Writer.class, msgs);
        return basicSetAuthor((Writer)otherEnd, msgs);
    }
    return super.eInverseAdd(otherEnd, featureID, msgs);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__AUTHOR:
        return basicSetAuthor(null, msgs);
    }
    return super.eInverseRemove(otherEnd, featureID, msgs);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public Object eGet(int featureID, boolean resolve, boolean coreType)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__TITLE:
        return getTitle();
      case ElementsPackage.BOOK__PAGES:
        return getPages();
      case ElementsPackage.BOOK__CATEGORY:
        return getCategory();
      case ElementsPackage.BOOK__AUTHOR:
        if (resolve) return getAuthor();
        return basicGetAuthor();
    }
    return super.eGet(featureID, resolve, coreType);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eSet(int featureID, Object newValue)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__TITLE:
        setTitle((String)newValue);
        return;
      case ElementsPackage.BOOK__PAGES:
        setPages((Integer)newValue);
        return;
      case ElementsPackage.BOOK__CATEGORY:
        setCategory((BookCategory)newValue);
        return;
      case ElementsPackage.BOOK__AUTHOR:
        setAuthor((Writer)newValue);
        return;
    }
    super.eSet(featureID, newValue);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__TITLE:
        setTitle(TITLE_EDEFAULT);
        return;
      case ElementsPackage.BOOK__PAGES:
        unsetPages();
        return;
      case ElementsPackage.BOOK__CATEGORY:
        unsetCategory();
        return;
      case ElementsPackage.BOOK__AUTHOR:
        setAuthor((Writer)null);
        return;
    }
    super.eUnset(featureID);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID)
  {
    switch (featureID)
    {
      case ElementsPackage.BOOK__TITLE:
        return TITLE_EDEFAULT == null ? title != null : !TITLE_EDEFAULT.equals(title);
      case ElementsPackage.BOOK__PAGES:
        return isSetPages();
      case ElementsPackage.BOOK__CATEGORY:
        return isSetCategory();
      case ElementsPackage.BOOK__AUTHOR:
        return author != null;
    }
    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(" (title: ");
    result.append(title);
    result.append(", pages: ");
    if (pagesESet) result.append(pages); else result.append("<unset>");
    result.append(", category: ");
    if (categoryESet) result.append(category); else result.append("<unset>");
    result.append(')');
    return result.toString();
  }

} //BookImpl