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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; 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(); }