/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.style.css.selector;

import org.pentaho.reporting.engine.classic.core.style.css.namespaces.NamespaceCollection;
import org.pentaho.reporting.engine.classic.core.style.css.namespaces.NamespaceDefinition;
import org.w3c.css.sac.ElementSelector;

import java.io.Serializable;

public class CSSElementSelector extends AbstractSelector implements ElementSelector, Serializable {
  private short selectorType;
  private String namespace;
  private String localName;

  public CSSElementSelector( final short selectorType, final String namespace, final String localName ) {
    this.selectorType = selectorType;
    this.namespace = namespace;
    this.localName = localName;
  }

  /**
   * Returns the <a href="http://www.w3.org/TR/REC-xml-names/#dt-NSName">namespace URI</a> of this element selector.
   * <p>
   * <code>NULL</code> if this element selector can match any namespace.
   * </p>
   */
  public String getNamespaceURI() {
    return namespace;
  }

  /**
   * Returns the <a href="http://www.w3.org/TR/REC-xml-names/#NT-LocalPart">local part</a> of the <a
   * href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">qualified name</a> of this element.
   * <p>
   * <code>NULL</code> if this element selector can match any element.
   * </p>
   * </ul>
   */
  public String getLocalName() {
    return localName;
  }

  /**
   * An integer indicating the type of <code>Selector</code>
   */
  public short getSelectorType() {
    return selectorType;
  }

  protected SelectorWeight createWeight() {
    return new SelectorWeight( 0, 0, 0, 1 );
  }

  public String print( final NamespaceCollection namespaces ) {
    final StringBuilder b = new StringBuilder();
    if ( namespace != null ) {
      if ( "*".equals( namespace ) ) {
        b.append( "*|" );
      } else if ( "".equals( namespace ) ) {
        b.append( "|" );
      } else {
        final NamespaceDefinition definition = namespaces.getDefinition( namespace );
        if ( definition == null ) {
          b.append( "\"" );
          b.append( namespace );
          b.append( "\"" );
          b.append( "|" );
        } else {
          b.append( definition.getPrefix() );
          b.append( "|" );
        }
      }
      b.append( localName );
    } else if ( localName != null ) {
      b.append( localName );
    }
    return b.toString();
  }
}