| /* |
| * Copyright (c) 1999 World Wide Web Consortium |
| * (Massachusetts Institute of Technology, Institut National de Recherche |
| * en Informatique et en Automatique, Keio University). |
| * All Rights Reserved. http://www.w3.org/Consortium/Legal/ |
| * |
| * The original version of this interface comes from SAX : |
| * http://www.megginson.com/SAX/ |
| * |
| * $Id$ |
| */ |
| package org.w3c.css.sac; |
| |
| /** |
| * Interface for associating a CSS event with a document location. |
| * |
| * <p>If a SAX parser provides location information to the SAX |
| * application, it does so by implementing this interface and then |
| * passing an instance to the application using the document |
| * handler's setDocumentLocator method. The application can use the |
| * object to obtain the location of any other document handler event |
| * in the CSS source document.</p> |
| * |
| * <p>Note that the results returned by the object will be valid only |
| * during the scope of each document handler method: the application |
| * will receive unpredictable results if it attempts to use the |
| * locator at any other time.</p> |
| * |
| * <p>CSS parsers are not required to supply a locator, but they are |
| * very strong encouraged to do so. If the parser supplies a |
| * locator, it must do so before reporting any other document events. |
| * If no locator has been set by the time the application receives |
| * the startDocument event, the application should assume that a |
| * locator is not available.</p> |
| * |
| * @version $Revision$ |
| * @author Philippe Le Hegaret |
| */ |
| public interface Locator { |
| |
| /** |
| * Return the URI for the current document event. |
| * |
| * <p>The parser must resolve the URI fully before passing it to the |
| * application.</p> |
| * |
| * @return A string containing the URI, or null |
| * if none is available. |
| */ |
| public String getURI(); |
| |
| /** |
| * Return the line number where the current document event ends. |
| * Note that this is the line position of the first character |
| * after the text associated with the document event. |
| * @return The line number, or -1 if none is available. |
| * @see #getColumnNumber |
| */ |
| public int getLineNumber(); |
| |
| /** |
| * Return the column number where the current document event ends. |
| * Note that this is the column number of the first |
| * character after the text associated with the document |
| * event. The first column in a line is position 1. |
| * @return The column number, or -1 if none is available. |
| * @see #getLineNumber |
| */ |
| public int getColumnNumber(); |
| } |