http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * 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 CSSStyleDeclaration 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. 

 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 CSSStyleDeclaration
 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 
CSS2Properties interface. 

 This interface is also used to provide a read-only access to the 
computed values of an element. See also the ViewCSS 
interface.  The CSS Object Model doesn't provide an access to the 
specified or actual values of the CSS cascade. 

See also the Document Object Model (DOM) Level 2 Style Specification.

Since:DOM Level 2
/**
 *  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. 

/**
     *  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. 

Throws:
  • DOMException – 
  SYNTAX_ERR: Raised if the specified CSS string value has a syntax 
  error and is unparsable.
  
    NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is 
  readonly or a property is readonly.
/**
     *  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. 

Params:
  • propertyName –  The name of the CSS property. See the CSS 
  property index.
Returns: 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.
/**
     *  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 null if the property is a shorthand 
property. Shorthand property values can only be accessed and modified 
as strings, using the getPropertyValue and 
setProperty methods. 

Params:
  • propertyName –  The name of the CSS property. See the CSS 
  property index.
Returns: Returns the value of the property if it has been explicitly 
  set for this declaration block. Returns null if the 
  property has not been set.
/**
     *  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. 

Params:
  • propertyName –  The name of the CSS property. See the CSS 
  property index.
Throws:
  • DOMException – 
  NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is readonly 
  or the property is readonly.
Returns: 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.
/**
     *  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 
"important" qualifier) if the priority has been 
explicitly set in this declaration block. 

Params:
  • propertyName –  The name of the CSS property. See the CSS 
  property index.
Returns: A string representing the priority (e.g. 
  "important") if the property has been explicitly set 
  in this declaration block and has a priority specified. The empty 
  string otherwise.
/**
     *  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. setProperty 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 item method.

Params:
  • propertyName –  The name of the CSS property. See the CSS 
  property index.
  • value –  The new value of the property.
  • priority –  The new priority of the property (e.g. 
  "important") or the empty string if none.
Throws:
  • DOMException – 
  SYNTAX_ERR: Raised if the specified value has a syntax error and is 
  unparsable.
  
    NO_MODIFICATION_ALLOWED_ERR: Raised if this declaration is 
  readonly or the property is readonly.
/**
     *  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. 

/**
     *  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. 

Params:
  • index –  Index of the property name to retrieve.
Returns: The name of the property at this ordinal position. The empty 
  string if no property exists at this position.
/**
     *  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 null 
if this CSSStyleDeclaration is not attached to a 
CSSRule. 

/**
     *  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();

}