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  /*
   * 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;
 
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
 
 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.

Throws:
org.w3c.dom.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.
 
     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.

Parameters:
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.
 
     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.

Parameters:
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.
 
     public CSSValue getPropertyCSSValue(String propertyName);

    
Used to remove a CSS property if it has been explicitly set within this declaration block.

Parameters:
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 or the property name does not correspond to a known CSS property.
Throws:
org.w3c.dom.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.

Parameters:
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.
    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.

Parameters:
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:
org.w3c.dom.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.
    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.

Parameters:
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.
    public String item(int index);

    
The CSS rule that contains this declaration block or null if this CSSStyleDeclaration is not attached to a CSSRule.
    public CSSRule getParentRule();
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