1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2001 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
6 *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB.  If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#include "config.h"
26#include "core/html/HTMLLegendElement.h"
27
28#include "core/HTMLNames.h"
29#include "core/dom/ElementTraversal.h"
30#include "core/html/HTMLFieldSetElement.h"
31#include "core/html/HTMLFormControlElement.h"
32
33namespace blink {
34
35using namespace HTMLNames;
36
37
38inline HTMLLegendElement::HTMLLegendElement(Document& document)
39    : HTMLElement(legendTag, document)
40{
41}
42
43DEFINE_NODE_FACTORY(HTMLLegendElement)
44
45HTMLFormControlElement* HTMLLegendElement::associatedControl()
46{
47    // Check if there's a fieldset belonging to this legend.
48    HTMLFieldSetElement* fieldset = Traversal<HTMLFieldSetElement>::firstAncestor(*this);
49    if (!fieldset)
50        return 0;
51
52    // Find first form element inside the fieldset that is not a legend element.
53    // FIXME: Should we consider tabindex?
54    return Traversal<HTMLFormControlElement>::next(*fieldset, fieldset);
55}
56
57void HTMLLegendElement::focus(bool, FocusType type)
58{
59    if (isFocusable())
60        Element::focus(true, type);
61
62    // To match other browsers' behavior, never restore previous selection.
63    if (HTMLFormControlElement* control = associatedControl())
64        control->focus(false, type);
65}
66
67void HTMLLegendElement::accessKeyAction(bool sendMouseEvents)
68{
69    if (HTMLFormControlElement* control = associatedControl())
70        control->accessKeyAction(sendMouseEvents);
71}
72
73HTMLFormElement* HTMLLegendElement::form() const
74{
75    // According to the specification, If the legend has a fieldset element as
76    // its parent, then the form attribute must return the same value as the
77    // form attribute on that fieldset element. Otherwise, it must return null.
78    ContainerNode* fieldset = parentNode();
79    if (!isHTMLFieldSetElement(fieldset))
80        return 0;
81
82    return toHTMLFieldSetElement(fieldset)->formOwner();
83}
84
85} // namespace
86