/*
 * 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.stylesheets;

import org.w3c.dom.Node;

/**
 * The <code>StyleSheet</code> interface is the abstract base interface for
 * any type of style sheet. It represents a single style sheet associated with
 * a structured document. In HTML, the StyleSheet interface represents either
 * an external style sheet, included via the HTML LINK element, or an inline
 * STYLE element. In XML, this interface represents an external style sheet,
 * included via a style sheet processing instruction.
 * <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 StyleSheet {
	/**
	 * This specifies the style sheet language for this style sheet. The style
	 * sheet language is specified as a content type (e.g. "text/css"). The
	 * content type is often specified in the <code>ownerNode</code>. Also
	 * see the type attribute definition for the <code>LINK</code> element
	 * in HTML 4.0, and the type pseudo-attribute for the XML style sheet
	 * processing instruction.
	 */
	public String getType();

	/**
	 * <code>false</code> if the style sheet is applied to the document.
	 * <code>true</code> if it is not. Modifying this attribute may cause a
	 * new resolution of style for the document. A stylesheet only applies if
	 * both an appropriate medium definition is present and the disabled
	 * attribute is false. So, if the media doesn't apply to the current user
	 * agent, the <code>disabled</code> attribute is ignored.
	 */
	public boolean getDisabled();

	public void setDisabled(boolean disabled);

	/**
	 * The node that associates this style sheet with the document. For HTML,
	 * this may be the corresponding <code>LINK</code> or <code>STYLE</code>
	 * element. For XML, it may be the linking processing instruction. For
	 * style sheets that are included by other style sheets, the value of this
	 * attribute is <code>null</code>.
	 */
	public Node getOwnerNode();

	/**
	 * For style sheet languages that support the concept of style sheet
	 * inclusion, this attribute represents the including style sheet, if one
	 * exists. If the style sheet is a top-level style sheet, or the style
	 * sheet language does not support inclusion, the value of this attribute
	 * is <code>null</code>.
	 */
	public StyleSheet getParentStyleSheet();

	/**
	 * If the style sheet is a linked style sheet, the value of its attribute
	 * is its location. For inline style sheets, the value of this attribute
	 * is <code>null</code>. See the href attribute definition for the
	 * <code>LINK</code> element in HTML 4.0, and the href pseudo-attribute
	 * for the XML style sheet processing instruction.
	 */
	public String getHref();

	/**
	 * The advisory title. The title is often specified in the
	 * <code>ownerNode</code>. See the title attribute definition for the
	 * <code>LINK</code> element in HTML 4.0, and the title pseudo-attribute
	 * for the XML style sheet processing instruction.
	 */
	public String getTitle();

	/**
	 * The intended destination media for style information. The media is
	 * often specified in the <code>ownerNode</code>. If no media has been
	 * specified, the <code>MediaList</code> will be empty. See the media
	 * attribute definition for the <code>LINK</code> element in HTML 4.0,
	 * and the media pseudo-attribute for the XML style sheet processing
	 * instruction . Modifying the media list may cause a change to the
	 * attribute <code>disabled</code>.
	 */
	public MediaList getMedia();

}