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- /*
- * AT-SPI - Assistive Technology Service Provider Interface
- * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
- *
- * Copyright 2001 Sun Microsystems, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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 the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
- #include <Accessibility_Accessible.idl>
-
- module Accessibility {
-
- /**
- * Instances of Hyperlink are returned by Hypertext objects, and are
- * the means by which end users and clients interact with linked, and in
- * some cases embedded, content. Hyperlinks may have multiple "anchors",
- * where an anchor corresponds to a reference to a particular resource with
- * a corresponding resource identified (URI). Hyperlinks may be
- * queried for their URIs, or queried for the objects corresponding to their
- * anchors. The objects thus obtained are instances of Accessible,
- * and may be queried, and manipulated via the Action interface.
- *
- * @note A Hyperlink implementor is normally NOT an Accessible;
- * the preferred usage is for a Hyperlink's associated "objects"
- * (accessed via the ::getObject method) are Accessibles. This means
- * that Actions such as "open link" are normally invoked on
- * the result of Hyperlink::getObject rather than directly on the
- * Hyperlink instance. For historical reasons some implementors of Hyperlink
- * implement Action as well. This usage on the part of implementing
- * applications and toolkits is discouraged, but clients of Hyperlink
- * should be aware of it and prepared to handle such usage.
- */
- interface Hyperlink : Bonobo::Unknown {
- /** the number of separate anchors associated with this Hyperlink */
- readonly attribute short nAnchors;
- /**
- * the starting offset within the containing Hypertext content
- * with which this Hyperlink is associated
- */
- readonly attribute long startIndex;
- /**
- * the ending offset within the containing Hypertext content
- * with which this Hyperlink is associated; that is, the offset of the
- * first element past the range within the Hypertext associated with
- * this Hyperlink.
- */
- readonly attribute long endIndex;
- /**
- * Gets the i'th object, (where i is an integer between 0 and
- * Hyperlink::numAnchors - 1, inclusive) associated with a Hyperlink.
- * The objects returned are usually actionable (i.e. they should implement
- * Accessibility::Action), and the available actions often include
- * "open", "bookmark", "save link as", etc. They may also implement
- * Accessibility::StreamableContent, although clients can normally use
- * ::getURI to obtain a resource locator via which the object's
- * data may be accessed.
- *
- * @note the most common application for 'multi anchor'
- * hyperlinks in HTML is probably "client side imagemaps".
- * A clickable image which uses the HTML 'usemap' attribute
- * should have one anchor for every <area> element that
- * includes an HREF. The objects corresponding to these map
- * areas may implement Accessibility::Component, to represent
- * their onscreen bounding box, and may expose their 'shape' as
- * as name-value pair via Accessibility::Accessible::getAttributeSet.
- *
- * @returns an Accessible object instance representing the
- * Hyperlink's ith anchor, or through which the content associated with
- * the \c ith anchor can be
- * accessed.
- */
- Accessible getObject (in long i);
- /**
- * Obtain a resource locator ('URI') which can be used to
- * access the content to which this link "points" or is connected.
- * @returns a string corresponding to the URI of the Hyperlink's
- * 'ith' anchor, if one exists, or a NIL string otherwise.
- */
- string getURI (in long i);
- /**
- * Check the hyperlink to see if a connection to its backing
- * content can be established, or if its URI is valid.
- * @note instances of invalid hyperlinks include links with malformed
- * URIs, or for which a contact to the service provider
- * specified in the URI cannot be established.
- * @returns \c True if the object's content is available, or
- * \c False if the hyperlink's URI is invalid, or
- * a connection to the resource can not be established.
- */
- boolean isValid ();
- /** \cond
- * unImplemented:
- *
- * placeholders for future expansion.
- */
- void unImplemented ();
- void unImplemented2 ();
- void unImplemented3 ();
- void unImplemented4 ();
- /** \endcond */
- };
- };
-