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/* ATK - The Accessibility Toolkit for GTK+
* Copyright 2001, 2002, 2003 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 "atkhypertext.h"
/**
* SECTION:atkhypertext
* @Short_description: The ATK interface which provides standard
* mechanism for manipulating hyperlinks.
* @Title:AtkHypertext
*
* An interface used for objects which implement linking between
* multiple resource or content locations, or multiple 'markers'
* within a single document. A Hypertext instance is associated with
* one or more Hyperlinks, which are associated with particular
* offsets within the Hypertext's included content. While this
* interface is derived from Text, there is no requirement that
* Hypertext instances have textual content; they may implement Image
* as well, and Hyperlinks need not have non-zero text offsets.
*/
enum {
LINK_SELECTED,
LAST_SIGNAL
};
static void atk_hypertext_base_init (AtkHypertextIface *class);
static guint atk_hypertext_signals[LAST_SIGNAL] = { 0 };
GType
atk_hypertext_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo tinfo =
{
sizeof (AtkHypertextIface),
(GBaseInitFunc) atk_hypertext_base_init,
(GBaseFinalizeFunc) NULL,
};
type = g_type_register_static (G_TYPE_INTERFACE, "AtkHypertext", &tinfo, 0);
}
return type;
}
static void
atk_hypertext_base_init (AtkHypertextIface *class)
{
static gboolean initialized = FALSE;
if (!initialized)
{
/**
* AtkHypertext::link-selected:
* @atkhypertext: the object which received the signal.
* @arg1: the index of the hyperlink which is selected
*
* The "link-selected" signal is emitted by an AtkHyperText
* object when one of the hyperlinks associated with the object
* is selected.
*/
atk_hypertext_signals[LINK_SELECTED] =
g_signal_new ("link_selected",
ATK_TYPE_HYPERTEXT,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (AtkHypertextIface, link_selected),
(GSignalAccumulator) NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE,
1, G_TYPE_INT);
initialized = TRUE;
}
}
/**
* atk_hypertext_get_link:
* @hypertext: an #AtkHypertext
* @link_index: an integer specifying the desired link
*
* Gets the link in this hypertext document at index
* @link_index
*
* Returns: (transfer none): the link in this hypertext document at
* index @link_index
**/
AtkHyperlink*
atk_hypertext_get_link (AtkHypertext *hypertext,
gint link_index)
{
AtkHypertextIface *iface;
g_return_val_if_fail (ATK_IS_HYPERTEXT (hypertext), NULL);
if (link_index < 0)
return NULL;
iface = ATK_HYPERTEXT_GET_IFACE (hypertext);
if (iface->get_link)
return (*(iface->get_link)) (hypertext, link_index);
else
return NULL;
}
/**
* atk_hypertext_get_n_links:
* @hypertext: an #AtkHypertext
*
* Gets the number of links within this hypertext document.
*
* Returns: the number of links within this hypertext document
**/
gint
atk_hypertext_get_n_links (AtkHypertext *hypertext)
{
AtkHypertextIface *iface;
g_return_val_if_fail (ATK_IS_HYPERTEXT (hypertext), 0);
iface = ATK_HYPERTEXT_GET_IFACE (hypertext);
if (iface->get_n_links)
return (*(iface->get_n_links)) (hypertext);
else
return 0;
}
/**
* atk_hypertext_get_link_index:
* @hypertext: an #AtkHypertext
* @char_index: a character index
*
* Gets the index into the array of hyperlinks that is associated with
* the character specified by @char_index.
*
* Returns: an index into the array of hyperlinks in @hypertext,
* or -1 if there is no hyperlink associated with this character.
**/
gint
atk_hypertext_get_link_index (AtkHypertext *hypertext,
gint char_index)
{
AtkHypertextIface *iface;
g_return_val_if_fail (ATK_IS_HYPERTEXT (hypertext), -1);
if (char_index < 0)
return -1;
iface = ATK_HYPERTEXT_GET_IFACE (hypertext);
if (iface->get_link_index)
return (*(iface->get_link_index)) (hypertext, char_index);
else
return -1;
}
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