content: /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code 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 General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  /*
   * This file is available under and governed by the GNU General Public
   * License version 2 only, as published by the Free Software Foundation.
   * However, the following notice accompanied the original version of this
   * file and, per its terms, should not be removed:
   *
   * Copyright (c) 2000 World Wide Web Consortium,
   * (Massachusetts Institute of Technology, Institut National de
   * Recherche en Informatique et en Automatique, Keio University). All
   * Rights Reserved. This program is distributed under the W3C's Software
   * Intellectual Property License. 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 W3C License http://www.w3.org/Consortium/Legal/ for more details.
   */
  
  package org.w3c.dom.css;
  
  import org.w3c.dom.DOMException;
  
  /**
   *  The <code>CSSStyleDeclaration</code> interface represents a single CSS
   * declaration block. This interface may be used to determine the style
   * properties currently set in a block or to set style properties explicitly
   * within the block.
   * <p> While an implementation may not recognize all CSS properties within a
   * CSS declaration block, it is expected to provide access to all specified
   * properties in the style sheet through the <code>CSSStyleDeclaration</code>
   *  interface. Furthermore, implementations that support a specific level of
   * CSS should correctly handle CSS shorthand properties for that level. For
   * a further discussion of shorthand properties, see the
   * <code>CSS2Properties</code> interface.
   * <p> This interface is also used to provide a read-only access to the
   * computed values of an element. See also the <code>ViewCSS</code>
   * interface.  The CSS Object Model doesn't provide an access to the
   * specified or actual values of the CSS cascade.
   * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document Object Model (DOM) Level 2 Style Specification</a>.
   * @since DOM Level 2
   */
  public interface CSSStyleDeclaration {
      /**
       *  The parsable textual representation of the declaration block
       * (excluding the surrounding curly braces). Setting this attribute will
       * result in the parsing of the new value and resetting of all the
       * properties in the declaration block including the removal or addition
       * of properties.
       */
      public String getCssText();
      /**
       *  The parsable textual representation of the declaration block
       * (excluding the surrounding curly braces). Setting this attribute will
       * result in the parsing of the new value and resetting of all the
       * properties in the declaration block including the removal or addition
       * of properties.
       * @exception DOMException
       *   SYNTAX_ERR: Raised if the specified CSS string value has a syntax
       *   error and is unparsable.
       *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is
       *   readonly or a property is readonly.
       */
      public void setCssText(String cssText)
                         throws DOMException;
  
      /**
       *  Used to retrieve the value of a CSS property if it has been explicitly
       * set within this declaration block.
       * @param propertyName  The name of the CSS property. See the CSS
       *   property index.
       * @return  Returns the value of the property if it has been explicitly
       *   set for this declaration block. Returns the empty string if the
       *   property has not been set.
       */
      public String getPropertyValue(String propertyName);
  
      /**
       *  Used to retrieve the object representation of the value of a CSS
       * property if it has been explicitly set within this declaration block.
       * This method returns <code>null</code> if the property is a shorthand
       * property. Shorthand property values can only be accessed and modified
       * as strings, using the <code>getPropertyValue</code> and
       * <code>setProperty</code> methods.
       * @param propertyName  The name of the CSS property. See the CSS
       *   property index.
       * @return  Returns the value of the property if it has been explicitly
       *   set for this declaration block. Returns <code>null</code> if the
       *   property has not been set.
       */
      public CSSValue getPropertyCSSValue(String propertyName);
  
      /**
       *  Used to remove a CSS property if it has been explicitly set within
       * this declaration block.
       * @param propertyName  The name of the CSS property. See the CSS
       *   property index.
       * @return  Returns the value of the property if it has been explicitly
       *   set for this declaration block. Returns the empty string if the
       *   property has not been set or the property name does not correspond
       *   to a known CSS property.
       * @exception DOMException
       *   NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is readonly
       *   or the property is readonly.
       */
      public String removeProperty(String propertyName)
                                   throws DOMException;
  
      /**
       *  Used to retrieve the priority of a CSS property (e.g. the
       * <code>"important"</code> qualifier) if the priority has been
       * explicitly set in this declaration block.
       * @param propertyName  The name of the CSS property. See the CSS
       *   property index.
       * @return  A string representing the priority (e.g.
       *   <code>"important"</code>) if the property has been explicitly set
       *   in this declaration block and has a priority specified. The empty
       *   string otherwise.
       */
      public String getPropertyPriority(String propertyName);
  
      /**
       *  Used to set a property value and priority within this declaration
       * block. <code>setProperty</code> permits to modify a property or add a
       * new one in the declaration block. Any call to this method may modify
       * the order of properties in the <code>item</code> method.
       * @param propertyName  The name of the CSS property. See the CSS
       *   property index.
       * @param value  The new value of the property.
       * @param priority  The new priority of the property (e.g.
       *   <code>"important"</code>) or the empty string if none.
       * @exception DOMException
       *   SYNTAX_ERR: Raised if the specified value has a syntax error and is
       *   unparsable.
       *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is
       *   readonly or the property is readonly.
       */
      public void setProperty(String propertyName,
                              String value,
                              String priority)
                              throws DOMException;
  
      /**
       *  The number of properties that have been explicitly set in this
       * declaration block. The range of valid indices is 0 to length-1
       * inclusive.
       */
      public int getLength();
  
      /**
       *  Used to retrieve the properties that have been explicitly set in this
       * declaration block. The order of the properties retrieved using this
       * method does not have to be the order in which they were set. This
       * method can be used to iterate over all properties in this declaration
       * block.
       * @param index  Index of the property name to retrieve.
       * @return  The name of the property at this ordinal position. The empty
       *   string if no property exists at this position.
       */
      public String item(int index);
  
      /**
       *  The CSS rule that contains this declaration block or <code>null</code>
       * if this <code>CSSStyleDeclaration</code> is not attached to a
       * <code>CSSRule</code>.
       */
      public CSSRule getParentRule();
  
  }
  