blob: 72450241a46c483b7afeeb6ca31841d87c0be201 [file] [log] [blame]
/*
* 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 ENABLE(ACCESSIBILITY)
#include "AXObjectCache.h"
#include "AccessibilityObject.h"
#include "Editing.h"
#include "NotImplemented.h"
#include "Position.h"
#include "Range.h"
#include "RenderListMarker.h"
#include "RenderObject.h"
#include "TextIterator.h"
#include "WebKitAccessible.h"
#include "WebKitAccessibleUtil.h"
#include <wtf/glib/WTFGType.h>
#include <wtf/text/CString.h>
using namespace WebCore;
static void webkit_accessible_hyperlink_atk_action_interface_init(AtkActionIface*);
struct _WebKitAccessibleHyperlinkPrivate {
WebKitAccessible* hyperlinkImpl;
// We cache these values so we can return them as const values.
CString actionName;
CString actionKeyBinding;
};
WEBKIT_DEFINE_TYPE_WITH_CODE(
WebKitAccessibleHyperlink, webkit_accessible_hyperlink, ATK_TYPE_HYPERLINK,
G_IMPLEMENT_INTERFACE(ATK_TYPE_ACTION, webkit_accessible_hyperlink_atk_action_interface_init))
enum {
PROP_0,
PROP_HYPERLINK_IMPL
};
static gboolean webkitAccessibleHyperlinkActionDoAction(AtkAction* action, gint)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(action);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, FALSE);
if (!ATK_IS_ACTION(accessibleHyperlink->priv->hyperlinkImpl))
return FALSE;
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
return coreObject.performDefaultAction();
}
static gint webkitAccessibleHyperlinkActionGetNActions(AtkAction* action)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(action);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, 0);
return ATK_IS_ACTION(accessibleHyperlink->priv->hyperlinkImpl) ? 1 : 0;
}
static const gchar* webkitAccessibleHyperlinkActionGetDescription(AtkAction* action, gint)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(action);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, nullptr);
// TODO: Need a way to provide/localize action descriptions.
notImplemented();
return "";
}
static const gchar* webkitAccessibleHyperlinkActionGetKeybinding(AtkAction* action, gint)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(action);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, nullptr);
if (!ATK_IS_ACTION(accessibleHyperlink->priv->hyperlinkImpl))
return nullptr;
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
accessibleHyperlink->priv->actionKeyBinding = coreObject.accessKey().string().utf8();
return accessibleHyperlink->priv->actionKeyBinding.data();
}
static const gchar* webkitAccessibleHyperlinkActionGetName(AtkAction* action, gint)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(action);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, nullptr);
if (!ATK_IS_ACTION(accessibleHyperlink->priv->hyperlinkImpl))
return nullptr;
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
accessibleHyperlink->priv->actionName = coreObject.actionVerb().utf8();
return accessibleHyperlink->priv->actionName.data();
}
static void webkit_accessible_hyperlink_atk_action_interface_init(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)
{
// FIXME: Do NOT support more than one instance of an AtkObject
// implementing AtkHyperlinkImpl in every instance of AtkHyperLink
if (index)
return nullptr;
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, nullptr);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
return !coreObject.url().isNull() ? g_strdup(coreObject.url().string().utf8().data()) : nullptr;
}
static AtkObject* webkitAccessibleHyperlinkGetObject(AtkHyperlink* link, gint index)
{
// FIXME: Do NOT support more than one instance of an AtkObject
// implementing AtkHyperlinkImpl in every instance of AtkHyperLink
if (index)
return nullptr;
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, 0);
return ATK_OBJECT(accessibleHyperlink->priv->hyperlinkImpl);
}
static gint rangeLengthForObject(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)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, 0);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
AccessibilityObject* parentUnignored = coreObject.parentObjectUnignored();
if (!parentUnignored)
return 0;
Node* node = coreObject.node();
if (!node)
return 0;
Node* parentNode = parentUnignored->node();
if (!parentNode)
return 0;
auto range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), firstPositionInOrBeforeNode(node));
return rangeLengthForObject(coreObject, range.ptr());
}
static gint webkitAccessibleHyperlinkGetEndIndex(AtkHyperlink* link)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, 0);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessibleHyperlink->priv->hyperlinkImpl);
AccessibilityObject* parentUnignored = coreObject.parentObjectUnignored();
if (!parentUnignored)
return 0;
Node* node = coreObject.node();
if (!node)
return 0;
Node* parentNode = parentUnignored->node();
if (!parentNode)
return 0;
auto range = Range::create(node->document(), firstPositionInOrBeforeNode(parentNode), lastPositionInOrAfterNode(node));
return rangeLengthForObject(coreObject, range.ptr());
}
static gboolean webkitAccessibleHyperlinkIsValid(AtkHyperlink* link)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->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
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->priv->hyperlinkImpl, 0);
return 1;
}
static gboolean webkitAccessibleHyperlinkIsSelectedLink(AtkHyperlink* link)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(link);
returnValIfWebKitAccessibleIsInvalid(accessibleHyperlink->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)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(object);
switch (propId) {
case PROP_HYPERLINK_IMPL:
g_value_set_object(value, accessibleHyperlink->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)
{
auto* accessibleHyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(object);
switch (propId) {
case PROP_HYPERLINK_IMPL:
accessibleHyperlink->priv->hyperlinkImpl = WEBKIT_ACCESSIBLE(g_value_get_object(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propId, pspec);
}
}
static void webkit_accessible_hyperlink_class_init(WebKitAccessibleHyperlinkClass* klass)
{
GObjectClass* gobjectClass = G_OBJECT_CLASS(klass);
gobjectClass->set_property = webkitAccessibleHyperlinkSetProperty;
gobjectClass->get_property = webkitAccessibleHyperlinkGetProperty;
AtkHyperlinkClass* atkHyperlinkClass = ATK_HYPERLINK_CLASS(klass);
atkHyperlinkClass->get_uri = webkitAccessibleHyperlinkGetURI;
atkHyperlinkClass->get_object = webkitAccessibleHyperlinkGetObject;
atkHyperlinkClass->get_start_index = webkitAccessibleHyperlinkGetStartIndex;
atkHyperlinkClass->get_end_index = webkitAccessibleHyperlinkGetEndIndex;
atkHyperlinkClass->is_valid = webkitAccessibleHyperlinkIsValid;
atkHyperlinkClass->get_n_anchors = webkitAccessibleHyperlinkGetNAnchors;
atkHyperlinkClass->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,
static_cast<GParamFlags>(WEBKIT_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)));
}
WebKitAccessibleHyperlink* webkitAccessibleHyperlinkGetOrCreate(AtkHyperlinkImpl* hyperlinkImpl)
{
g_return_val_if_fail(ATK_IS_HYPERLINK_IMPL(hyperlinkImpl), nullptr);
g_return_val_if_fail(WEBKIT_IS_ACCESSIBLE(hyperlinkImpl), nullptr);
if (auto* currentHyperLink = g_object_get_data(G_OBJECT(hyperlinkImpl), "webkit-accessible-hyperlink-object"))
return WEBKIT_ACCESSIBLE_HYPERLINK(g_object_ref(currentHyperLink));
auto* hyperlink = WEBKIT_ACCESSIBLE_HYPERLINK(g_object_new(WEBKIT_TYPE_ACCESSIBLE_HYPERLINK, "hyperlink-impl", hyperlinkImpl, nullptr));
g_object_set_data_full(G_OBJECT(hyperlinkImpl), "webkit-accessible-hyperlink-object", hyperlink, g_object_unref);
return hyperlink;
}
#endif // ENABLE(ACCESSIBILITY)