bundles/org.eclipse.rap.themeeditor/src/org/eclipse/rwt/internal/theme/css/StyleRule.java

/*******************************************************************************
 * Copyright (c) 2008 Innoopract Informationssysteme GmbH.
 * 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:
 *     Innoopract Informationssysteme GmbH - initial API and implementation
 ******************************************************************************/

package org.eclipse.rwt.internal.theme.css;

import java.util.ArrayList;
import java.util.List;

import org.w3c.css.sac.Selector;
import org.w3c.css.sac.SelectorList;


public class StyleRule implements ElementMatcher {

  private final SelectorList selectors;

  private final StylePropertyMap properties;

  /* BEGIN Modification for Theme Editor */
  private List comments;
  private int namePosition;
  private String name;
  private int lineNumber = -1;
  /* END Modification for Theme Editor */

  public StyleRule( final SelectorList selectors,
                    final StylePropertyMap properties )
  {
    this.selectors = selectors;
    this.properties = properties;
  /* BEGIN Modification for Theme Editor */
  comments = new ArrayList();
  /* END Modification for Theme Editor */
  }

  public SelectorList getSelectors() {
    return selectors;
  }

  public StylePropertyMap getProperties() {
    return properties;
  }

  public Selector getMatchingSelector( final Element element ) {
    Selector result = null;
    int maxSpecificity = -1;
    int length = selectors.getLength();
    for( int i = 0; i < length; i++ ) {
      Selector selector = selectors.item( i );
      ElementMatcher matcher = ( ElementMatcher )selector;
      if( matcher.matches( element ) ) {
        int specificity = ( ( Specific )selector ).getSpecificity();
        if( specificity > maxSpecificity  ) {
          result = selector;
          maxSpecificity = specificity;
        }
      }
    }
    return result;
  }

  public boolean matches( final Element element ) {
    return getMatchingSelector( element ) != null;
  }

  public String getSelectorText() {
    StringBuffer buffer = new StringBuffer();
    int length = selectors.getLength();
    for( int i = 0; i < length; i++ ) {
      Selector selector = selectors.item( i );
      if( i > 0 ) {
        buffer.append( ", " );
      }
      buffer.append( selector.toString() );
    }
    return buffer.toString();
  }

  /*
   * BEGIN Modification for Theme Editor
   */
  public List getComments() {
    return comments;
  }

  public void setComments( final List comments ) {
    if ( comments != null ) {
      this.comments = comments;
      parseComments();
    }
  }

  private void parseComments() {
    for( int i = 0; i < comments.size(); i++ ) {
      String comment = ( ( String )comments.get( i ) ).trim();
      if( comment.startsWith( "@name " ) ) {
        name = comment.substring( 6 );
        namePosition = i;
      }
    }
  }

  public String getName() {
    if( name == null ) {
      return getSelectorText();
    } else {
      return name;
    }
  }

  public void setName( final String name ) {
    if( this.name == null ) {
      comments.add( " @name " + name + " " );
      namePosition = comments.size() - 1;
    } else {
      comments.set( namePosition, " @name " + name + " " );
    }
    this.name = name;
  }

  public int getLineNumber() {
    return lineNumber;
  }

  public void setLineNumber( int lineNumber ) {
    this.lineNumber = lineNumber;
  }
  /*
   * END Modification for Theme Editor
   */
}