Source/WebCore/accessibility/atk/WebKitAccessibleHyperlink.cpp - third_party/webkit - Git at Google

 /*
  * Copyright (C) 2010, 2011, 2012 Igalia S.L.
  * Copyright (C) 2013 Samsung Electronics
  *
  * 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; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 #include "config.h"
 #include "WebKitAccessibleHyperlink.h"

 #if HAVE(ACCESSIBILITY)

 #include "AXObjectCache.h"
 #include "AccessibilityObject.h"
 #include "NotImplemented.h"
 #include "Position.h"
 #include "Range.h"
 #include "RenderListMarker.h"
 #include "RenderObject.h"
 #include "TextIterator.h"
 #include "WebKitAccessibleUtil.h"
 #include "WebKitAccessibleWrapperAtk.h"
 #include "htmlediting.h"
 #include <wtf/text/CString.h>

 #include <atk/atk.h>
 #include <glib.h>

 using namespace WebCore;

 struct _WebKitAccessibleHyperlinkPrivate {
     WebKitAccessible* hyperlinkImpl;

     // We cache these values so we can return them as const values.
     CString actionName;
     CString actionKeyBinding;
 };

 #define WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, WebKitAccessibleHyperlinkPrivate))

 enum {
     PROP_0,

     PROP_HYPERLINK_IMPL
 };

 static gpointer webkitAccessibleHyperlinkParentClass = 0;

 static AccessibilityObject* core(WebKitAccessible* accessible)
 {
     if (!accessible || !WEBKIT_IS_ACCESSIBLE(accessible))
         return 0;

     return webkitAccessibleGetAccessibilityObject(accessible);
 }

 static AccessibilityObject* core(WebKitAccessibleHyperlink* link)
 {
     if (!link)
         return 0;

     return core(link->priv->hyperlinkImpl);
 }

 static AccessibilityObject* core(AtkHyperlink* link)
 {
     if (!WEBKIT_IS_ACCESSIBLE_HYPERLINK(link))
         return 0;

     return core(WEBKIT_ACCESSIBLE_HYPERLINK(link));
 }

 static AccessibilityObject* core(AtkAction* action)
 {
     return core(WEBKIT_ACCESSIBLE_HYPERLINK(action));
 }


 static gboolean webkitAccessibleHyperlinkActionDoAction(AtkAction* action, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), FALSE);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, FALSE);
     g_return_val_if_fail(!index, FALSE);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, FALSE);

     if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
         return FALSE;

     AccessibilityObject* coreObject = core(action);
     if (!coreObject)
         return FALSE;

     return coreObject->performDefaultAction();
 }

 static gint webkitAccessibleHyperlinkActionGetNActions(AtkAction* action)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);

     if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
         return 0;

     return 1;
 }

 static const gchar* webkitAccessibleHyperlinkActionGetDescription(AtkAction* action, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
     g_return_val_if_fail(!index, 0);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);

     // TODO: Need a way to provide/localize action descriptions.
     notImplemented();
     return "";
 }

 static const gchar* webkitAccessibleHyperlinkActionGetKeybinding(AtkAction* action, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
     g_return_val_if_fail(!index, 0);

     WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv;
     returnValIfWebKitAccessibleIsInvalid(priv->hyperlinkImpl, 0);

     if (!ATK_IS_ACTION(priv->hyperlinkImpl))
         return 0;

     AccessibilityObject* coreObject = core(action);
     if (!coreObject)
         return 0;

     priv->actionKeyBinding = coreObject->accessKey().string().utf8();
     return priv->actionKeyBinding.data();
 }

 static const gchar* webkitAccessibleHyperlinkActionGetName(AtkAction* action, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
     g_return_val_if_fail(!index, 0);

     WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv;
     returnValIfWebKitAccessibleIsInvalid(priv->hyperlinkImpl, 0);

     if (!ATK_IS_ACTION(priv->hyperlinkImpl))
         return 0;

     AccessibilityObject* coreObject = core(action);
     if (!coreObject)
         return 0;

     priv->actionName = coreObject->actionVerb().utf8();
     return priv->actionName.data();
 }

 static void atkActionInterfaceInit(AtkActionIface* iface)
 {
     iface->do_action = webkitAccessibleHyperlinkActionDoAction;
     iface->get_n_actions = webkitAccessibleHyperlinkActionGetNActions;
     iface->get_description = webkitAccessibleHyperlinkActionGetDescription;
     iface->get_keybinding = webkitAccessibleHyperlinkActionGetKeybinding;
     iface->get_name = webkitAccessibleHyperlinkActionGetName;
 }

 static gchar* webkitAccessibleHyperlinkGetURI(AtkHyperlink* link, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     // FIXME: Do NOT support more than one instance of an AtkObject
     // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
     g_return_val_if_fail(!index, 0);

     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     AccessibilityObject* coreObject = core(link);
     if (!coreObject || coreObject->url().isNull())
         return 0;

     return g_strdup(coreObject->url().string().utf8().data());
 }

 static AtkObject* webkitAccessibleHyperlinkGetObject(AtkHyperlink* link, gint index)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     // FIXME: Do NOT support more than one instance of an AtkObject
     // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
     g_return_val_if_fail(!index, 0);

     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     return ATK_OBJECT(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl);
 }

 static gint getRangeLengthForObject(AccessibilityObject* obj, Range* range)
 {
     // This is going to be the actual length in most of the cases
     int baseLength = TextIterator::rangeLength(range, true);

     // Check whether the current hyperlink belongs to a list item.
     // If so, we need to consider the length of the item's marker
     AccessibilityObject* parent = obj->parentObjectUnignored();
     if (!parent || !parent->isAccessibilityRenderObject() || !parent->isListItem())
         return baseLength;

     // Even if we don't expose list markers to Assistive
     // Technologies, we need to have a way to measure their length
     // for those cases when it's needed to take it into account
     // separately (as in getAccessibilityObjectForOffset)
     AccessibilityObject* markerObj = parent->firstChild();
     if (!markerObj)
         return baseLength;

     RenderObject* renderer = markerObj->renderer();
     if (!is<RenderListMarker>(renderer))
         return baseLength;

     auto& marker = downcast<RenderListMarker>(*renderer);
     return baseLength + marker.text().length() + marker.suffix().length();
 }

 static gint webkitAccessibleHyperlinkGetStartIndex(AtkHyperlink* link)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     AccessibilityObject* coreObject = core(link);
     if (!coreObject)
         return 0;

     AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
     if (!parentUnignored)
         return 0;

     Node* node = coreObject->node();
     if (!node)
         return 0;

     Node* parentNode = parentUnignored->node();
     if (!parentNode)
         return 0;

     RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), firstPositionInOrBeforeNode(node));
     return getRangeLengthForObject(coreObject, range.get());
 }

 static gint webkitAccessibleHyperlinkGetEndIndex(AtkHyperlink* link)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     AccessibilityObject* coreObject = core(link);
     if (!coreObject)
         return 0;

     AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
     if (!parentUnignored)
         return 0;

     Node* node = coreObject->node();
     if (!node)
         return 0;

     Node* parentNode = parentUnignored->node();
     if (!parentNode)
         return 0;

     RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), lastPositionInOrAfterNode(node));
     return getRangeLengthForObject(coreObject, range.get());
 }

 static gboolean webkitAccessibleHyperlinkIsValid(AtkHyperlink* link)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), FALSE);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);

     // Link is valid for the whole object's lifetime
     return TRUE;
 }

 static gint webkitAccessibleHyperlinkGetNAnchors(AtkHyperlink* link)
 {
     // FIXME Do NOT support more than one instance of an AtkObject
     // implementing AtkHyperlinkImpl in every instance of AtkHyperLink
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

     return 1;
 }

 static gboolean webkitAccessibleHyperlinkIsSelectedLink(AtkHyperlink* link)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), FALSE);
     g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);
     returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);

     // Not implemented: this function is deprecated in ATK now
     notImplemented();
     return FALSE;
 }

 static void webkitAccessibleHyperlinkGetProperty(GObject* object, guint propId, GValue* value, GParamSpec* pspec)
 {
     switch (propId) {
     case PROP_HYPERLINK_IMPL:
         g_value_set_object(value, WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv->hyperlinkImpl);
         break;
     default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
     }
 }

 static void webkitAccessibleHyperlinkSetProperty(GObject* object, guint propId, const GValue* value, GParamSpec* pspec)
 {
     WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv;

     switch (propId) {
     case PROP_HYPERLINK_IMPL:
         // No need to check and unref previous values of
         // priv->hyperlinkImpl as this is a CONSTRUCT ONLY property
         priv->hyperlinkImpl = WEBKIT_ACCESSIBLE(g_value_get_object(value));
         g_object_weak_ref(G_OBJECT(priv->hyperlinkImpl), (GWeakNotify)g_object_unref, object);
         break;
     default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
     }
 }

 static void webkitAccessibleHyperlinkFinalize(GObject* object)
 {
     G_OBJECT_CLASS(webkitAccessibleHyperlinkParentClass)->finalize(object);
 }

 static void webkitAccessibleHyperlinkClassInit(AtkHyperlinkClass* klass)
 {
     GObjectClass* gobjectClass = G_OBJECT_CLASS(klass);

     webkitAccessibleHyperlinkParentClass = g_type_class_peek_parent(klass);

     gobjectClass->finalize = webkitAccessibleHyperlinkFinalize;
     gobjectClass->set_property = webkitAccessibleHyperlinkSetProperty;
     gobjectClass->get_property = webkitAccessibleHyperlinkGetProperty;

     klass->get_uri = webkitAccessibleHyperlinkGetURI;
     klass->get_object = webkitAccessibleHyperlinkGetObject;
     klass->get_start_index = webkitAccessibleHyperlinkGetStartIndex;
     klass->get_end_index = webkitAccessibleHyperlinkGetEndIndex;
     klass->is_valid = webkitAccessibleHyperlinkIsValid;
     klass->get_n_anchors = webkitAccessibleHyperlinkGetNAnchors;
     klass->is_selected_link = webkitAccessibleHyperlinkIsSelectedLink;

     g_object_class_install_property(gobjectClass, PROP_HYPERLINK_IMPL,
         g_param_spec_object("hyperlink-impl",
             "Hyperlink implementation",
             "The associated WebKitAccessible instance.",
             WEBKIT_TYPE_ACCESSIBLE,
             (GParamFlags)(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)));

     g_type_class_add_private(gobjectClass, sizeof(WebKitAccessibleHyperlinkPrivate));
 }

 static void webkitAccessibleHyperlinkInit(AtkHyperlink* link)
 {
     WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv = WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(link);
     WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl = nullptr;
 }

 GType webkitAccessibleHyperlinkGetType()
 {
     static volatile gsize typeVolatile = 0;

     if (g_once_init_enter(&typeVolatile)) {
         static const GTypeInfo tinfo = {
             sizeof(WebKitAccessibleHyperlinkClass),
             (GBaseInitFunc) 0,
             (GBaseFinalizeFunc) 0,
             (GClassInitFunc) webkitAccessibleHyperlinkClassInit,
             (GClassFinalizeFunc) 0,
             0, /* class data */
             sizeof(WebKitAccessibleHyperlink), /* instance size */
             0, /* nb preallocs */
             (GInstanceInitFunc) webkitAccessibleHyperlinkInit,
             0 /* value table */
         };

         static const GInterfaceInfo actionInfo = {
             (GInterfaceInitFunc)(GInterfaceInitFunc)atkActionInterfaceInit,
             (GInterfaceFinalizeFunc) 0, 0
         };

         GType type = g_type_register_static(ATK_TYPE_HYPERLINK, "WebKitAccessibleHyperlink", &tinfo, GTypeFlags(0));
         g_type_add_interface_static(type, ATK_TYPE_ACTION, &actionInfo);

         g_once_init_leave(&typeVolatile, type);
     }

     return typeVolatile;
 }

 WebKitAccessibleHyperlink* webkitAccessibleHyperlinkNew(AtkHyperlinkImpl* hyperlinkImpl)
 {
     g_return_val_if_fail(ATK_IS_HYPERLINK_IMPL(hyperlinkImpl), 0);
     return WEBKIT_ACCESSIBLE_HYPERLINK(g_object_new(WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, "hyperlink-impl", hyperlinkImpl, 0));
 }

 WebCore::AccessibilityObject* webkitAccessibleHyperlinkGetAccessibilityObject(WebKitAccessibleHyperlink* link)
 {
     g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
     return core(link);
 }

 #endif // HAVE(ACCESSIBILITY)
	/*
	* Copyright (C) 2010, 2011, 2012 Igalia S.L.
	* Copyright (C) 2013 Samsung Electronics
	*
	* 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; see the file COPYING.LIB. If not, write to
	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#include "config.h"
	#include "WebKitAccessibleHyperlink.h"

	#if HAVE(ACCESSIBILITY)

	#include "AXObjectCache.h"
	#include "AccessibilityObject.h"
	#include "NotImplemented.h"
	#include "Position.h"
	#include "Range.h"
	#include "RenderListMarker.h"
	#include "RenderObject.h"
	#include "TextIterator.h"
	#include "WebKitAccessibleUtil.h"
	#include "WebKitAccessibleWrapperAtk.h"
	#include "htmlediting.h"
	#include <wtf/text/CString.h>

	#include <atk/atk.h>
	#include <glib.h>

	using namespace WebCore;

	struct _WebKitAccessibleHyperlinkPrivate {
	WebKitAccessible* hyperlinkImpl;

	// We cache these values so we can return them as const values.
	CString actionName;
	CString actionKeyBinding;
	};

	#define WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, WebKitAccessibleHyperlinkPrivate))

	enum {
	PROP_0,

	PROP_HYPERLINK_IMPL
	};

	static gpointer webkitAccessibleHyperlinkParentClass = 0;

	static AccessibilityObject* core(WebKitAccessible* accessible)
	{
	if (!accessible \|\| !WEBKIT_IS_ACCESSIBLE(accessible))
	return 0;

	return webkitAccessibleGetAccessibilityObject(accessible);
	}

	static AccessibilityObject* core(WebKitAccessibleHyperlink* link)
	{
	if (!link)
	return 0;

	return core(link->priv->hyperlinkImpl);
	}

	static AccessibilityObject* core(AtkHyperlink* link)
	{
	if (!WEBKIT_IS_ACCESSIBLE_HYPERLINK(link))
	return 0;

	return core(WEBKIT_ACCESSIBLE_HYPERLINK(link));
	}

	static AccessibilityObject* core(AtkAction* action)
	{
	return core(WEBKIT_ACCESSIBLE_HYPERLINK(action));
	}


	static gboolean webkitAccessibleHyperlinkActionDoAction(AtkAction* action, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), FALSE);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, FALSE);
	g_return_val_if_fail(!index, FALSE);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, FALSE);

	if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
	return FALSE;

	AccessibilityObject* coreObject = core(action);
	if (!coreObject)
	return FALSE;

	return coreObject->performDefaultAction();
	}

	static gint webkitAccessibleHyperlinkActionGetNActions(AtkAction* action)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);

	if (!ATK_IS_ACTION(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl))
	return 0;

	return 1;
	}

	static const gchar* webkitAccessibleHyperlinkActionGetDescription(AtkAction* action, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
	g_return_val_if_fail(!index, 0);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);

	// TODO: Need a way to provide/localize action descriptions.
	notImplemented();
	return "";
	}

	static const gchar* webkitAccessibleHyperlinkActionGetKeybinding(AtkAction* action, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
	g_return_val_if_fail(!index, 0);

	WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv;
	returnValIfWebKitAccessibleIsInvalid(priv->hyperlinkImpl, 0);

	if (!ATK_IS_ACTION(priv->hyperlinkImpl))
	return 0;

	AccessibilityObject* coreObject = core(action);
	if (!coreObject)
	return 0;

	priv->actionKeyBinding = coreObject->accessKey().string().utf8();
	return priv->actionKeyBinding.data();
	}

	static const gchar* webkitAccessibleHyperlinkActionGetName(AtkAction* action, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(action), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv->hyperlinkImpl, 0);
	g_return_val_if_fail(!index, 0);

	WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(action)->priv;
	returnValIfWebKitAccessibleIsInvalid(priv->hyperlinkImpl, 0);

	if (!ATK_IS_ACTION(priv->hyperlinkImpl))
	return 0;

	AccessibilityObject* coreObject = core(action);
	if (!coreObject)
	return 0;

	priv->actionName = coreObject->actionVerb().utf8();
	return priv->actionName.data();
	}

	static void atkActionInterfaceInit(AtkActionIface* iface)
	{
	iface->do_action = webkitAccessibleHyperlinkActionDoAction;
	iface->get_n_actions = webkitAccessibleHyperlinkActionGetNActions;
	iface->get_description = webkitAccessibleHyperlinkActionGetDescription;
	iface->get_keybinding = webkitAccessibleHyperlinkActionGetKeybinding;
	iface->get_name = webkitAccessibleHyperlinkActionGetName;
	}

	static gchar* webkitAccessibleHyperlinkGetURI(AtkHyperlink* link, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	// FIXME: Do NOT support more than one instance of an AtkObject
	// implementing AtkHyperlinkImpl in every instance of AtkHyperLink
	g_return_val_if_fail(!index, 0);

	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	AccessibilityObject* coreObject = core(link);
	if (!coreObject \|\| coreObject->url().isNull())
	return 0;

	return g_strdup(coreObject->url().string().utf8().data());
	}

	static AtkObject* webkitAccessibleHyperlinkGetObject(AtkHyperlink* link, gint index)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	// FIXME: Do NOT support more than one instance of an AtkObject
	// implementing AtkHyperlinkImpl in every instance of AtkHyperLink
	g_return_val_if_fail(!index, 0);

	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	return ATK_OBJECT(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl);
	}

	static gint getRangeLengthForObject(AccessibilityObject* obj, Range* range)
	{
	// This is going to be the actual length in most of the cases
	int baseLength = TextIterator::rangeLength(range, true);

	// Check whether the current hyperlink belongs to a list item.
	// If so, we need to consider the length of the item's marker
	AccessibilityObject* parent = obj->parentObjectUnignored();
	if (!parent \|\| !parent->isAccessibilityRenderObject() \|\| !parent->isListItem())
	return baseLength;

	// Even if we don't expose list markers to Assistive
	// Technologies, we need to have a way to measure their length
	// for those cases when it's needed to take it into account
	// separately (as in getAccessibilityObjectForOffset)
	AccessibilityObject* markerObj = parent->firstChild();
	if (!markerObj)
	return baseLength;

	RenderObject* renderer = markerObj->renderer();
	if (!is<RenderListMarker>(renderer))
	return baseLength;

	auto& marker = downcast<RenderListMarker>(*renderer);
	return baseLength + marker.text().length() + marker.suffix().length();
	}

	static gint webkitAccessibleHyperlinkGetStartIndex(AtkHyperlink* link)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	AccessibilityObject* coreObject = core(link);
	if (!coreObject)
	return 0;

	AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
	if (!parentUnignored)
	return 0;

	Node* node = coreObject->node();
	if (!node)
	return 0;

	Node* parentNode = parentUnignored->node();
	if (!parentNode)
	return 0;

	RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), firstPositionInOrBeforeNode(node));
	return getRangeLengthForObject(coreObject, range.get());
	}

	static gint webkitAccessibleHyperlinkGetEndIndex(AtkHyperlink* link)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	AccessibilityObject* coreObject = core(link);
	if (!coreObject)
	return 0;

	AccessibilityObject* parentUnignored = coreObject->parentObjectUnignored();
	if (!parentUnignored)
	return 0;

	Node* node = coreObject->node();
	if (!node)
	return 0;

	Node* parentNode = parentUnignored->node();
	if (!parentNode)
	return 0;

	RefPtr<Range> range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), lastPositionInOrAfterNode(node));
	return getRangeLengthForObject(coreObject, range.get());
	}

	static gboolean webkitAccessibleHyperlinkIsValid(AtkHyperlink* link)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), FALSE);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);

	// Link is valid for the whole object's lifetime
	return TRUE;
	}

	static gint webkitAccessibleHyperlinkGetNAnchors(AtkHyperlink* link)
	{
	// FIXME Do NOT support more than one instance of an AtkObject
	// implementing AtkHyperlinkImpl in every instance of AtkHyperLink
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, 0);

	return 1;
	}

	static gboolean webkitAccessibleHyperlinkIsSelectedLink(AtkHyperlink* link)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), FALSE);
	g_return_val_if_fail(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);
	returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl, FALSE);

	// Not implemented: this function is deprecated in ATK now
	notImplemented();
	return FALSE;
	}

	static void webkitAccessibleHyperlinkGetProperty(GObject* object, guint propId, GValue* value, GParamSpec* pspec)
	{
	switch (propId) {
	case PROP_HYPERLINK_IMPL:
	g_value_set_object(value, WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv->hyperlinkImpl);
	break;
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
	}
	}

	static void webkitAccessibleHyperlinkSetProperty(GObject* object, guint propId, const GValue* value, GParamSpec* pspec)
	{
	WebKitAccessibleHyperlinkPrivate* priv = WEBKIT_ACCESSIBLE_HYPERLINK(object)->priv;

	switch (propId) {
	case PROP_HYPERLINK_IMPL:
	// No need to check and unref previous values of
	// priv->hyperlinkImpl as this is a CONSTRUCT ONLY property
	priv->hyperlinkImpl = WEBKIT_ACCESSIBLE(g_value_get_object(value));
	g_object_weak_ref(G_OBJECT(priv->hyperlinkImpl), (GWeakNotify)g_object_unref, object);
	break;
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
	}
	}

	static void webkitAccessibleHyperlinkFinalize(GObject* object)
	{
	G_OBJECT_CLASS(webkitAccessibleHyperlinkParentClass)->finalize(object);
	}

	static void webkitAccessibleHyperlinkClassInit(AtkHyperlinkClass* klass)
	{
	GObjectClass* gobjectClass = G_OBJECT_CLASS(klass);

	webkitAccessibleHyperlinkParentClass = g_type_class_peek_parent(klass);

	gobjectClass->finalize = webkitAccessibleHyperlinkFinalize;
	gobjectClass->set_property = webkitAccessibleHyperlinkSetProperty;
	gobjectClass->get_property = webkitAccessibleHyperlinkGetProperty;

	klass->get_uri = webkitAccessibleHyperlinkGetURI;
	klass->get_object = webkitAccessibleHyperlinkGetObject;
	klass->get_start_index = webkitAccessibleHyperlinkGetStartIndex;
	klass->get_end_index = webkitAccessibleHyperlinkGetEndIndex;
	klass->is_valid = webkitAccessibleHyperlinkIsValid;
	klass->get_n_anchors = webkitAccessibleHyperlinkGetNAnchors;
	klass->is_selected_link = webkitAccessibleHyperlinkIsSelectedLink;

	g_object_class_install_property(gobjectClass, PROP_HYPERLINK_IMPL,
	g_param_spec_object("hyperlink-impl",
	"Hyperlink implementation",
	"The associated WebKitAccessible instance.",
	WEBKIT_TYPE_ACCESSIBLE,
	(GParamFlags)(G_PARAM_READWRITE \| G_PARAM_CONSTRUCT_ONLY \| G_PARAM_STATIC_STRINGS)));

	g_type_class_add_private(gobjectClass, sizeof(WebKitAccessibleHyperlinkPrivate));
	}

	static void webkitAccessibleHyperlinkInit(AtkHyperlink* link)
	{
	WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv = WEBKIT_ACCESSIBLE_HYPERLINK_GET_PRIVATE(link);
	WEBKIT_ACCESSIBLE_HYPERLINK(link)->priv->hyperlinkImpl = nullptr;
	}

	GType webkitAccessibleHyperlinkGetType()
	{
	static volatile gsize typeVolatile = 0;

	if (g_once_init_enter(&typeVolatile)) {
	static const GTypeInfo tinfo = {
	sizeof(WebKitAccessibleHyperlinkClass),
	(GBaseInitFunc) 0,
	(GBaseFinalizeFunc) 0,
	(GClassInitFunc) webkitAccessibleHyperlinkClassInit,
	(GClassFinalizeFunc) 0,
	0, /* class data */
	sizeof(WebKitAccessibleHyperlink), /* instance size */
	0, /* nb preallocs */
	(GInstanceInitFunc) webkitAccessibleHyperlinkInit,
	0 /* value table */
	};

	static const GInterfaceInfo actionInfo = {
	(GInterfaceInitFunc)(GInterfaceInitFunc)atkActionInterfaceInit,
	(GInterfaceFinalizeFunc) 0, 0
	};

	GType type = g_type_register_static(ATK_TYPE_HYPERLINK, "WebKitAccessibleHyperlink", &tinfo, GTypeFlags(0));
	g_type_add_interface_static(type, ATK_TYPE_ACTION, &actionInfo);

	g_once_init_leave(&typeVolatile, type);
	}

	return typeVolatile;
	}

	WebKitAccessibleHyperlink* webkitAccessibleHyperlinkNew(AtkHyperlinkImpl* hyperlinkImpl)
	{
	g_return_val_if_fail(ATK_IS_HYPERLINK_IMPL(hyperlinkImpl), 0);
	return WEBKIT_ACCESSIBLE_HYPERLINK(g_object_new(WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, "hyperlink-impl", hyperlinkImpl, 0));
	}

	WebCore::AccessibilityObject* webkitAccessibleHyperlinkGetAccessibilityObject(WebKitAccessibleHyperlink* link)
	{
	g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE_HYPERLINK(link), 0);
	return core(link);
	}

	#endif // HAVE(ACCESSIBILITY)