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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
* (C) 2006 Alexey Proskuryakov (ap@nypop.com)
*
* 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 "third_party/blink/renderer/core/html/forms/html_field_set_element.h"
#include "third_party/blink/renderer/core/dom/element_traversal.h"
#include "third_party/blink/renderer/core/dom/events/event_dispatch_forbidden_scope.h"
#include "third_party/blink/renderer/core/dom/node_lists_node_data.h"
#include "third_party/blink/renderer/core/html/forms/html_legend_element.h"
#include "third_party/blink/renderer/core/html/html_collection.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/layout/layout_block.h"
#include "third_party/blink/renderer/core/layout/layout_object_factory.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
namespace blink {
using namespace html_names;
inline HTMLFieldSetElement::HTMLFieldSetElement(Document& document)
: HTMLFormControlElement(kFieldsetTag, document) {}
HTMLFieldSetElement* HTMLFieldSetElement::Create(Document& document) {
return MakeGarbageCollected<HTMLFieldSetElement>(document);
}
bool HTMLFieldSetElement::MatchesValidityPseudoClasses() const {
return true;
}
bool HTMLFieldSetElement::IsValidElement() {
for (Element* element : *elements()) {
if (element->IsFormControlElement()) {
if (!ToHTMLFormControlElement(element)->checkValidity(
nullptr, kCheckValidityDispatchNoEvent))
return false;
}
}
return true;
}
bool HTMLFieldSetElement::IsSubmittableElement() {
return false;
}
// Returns a disabled focused element if it's in descendants of |base|.
Element*
HTMLFieldSetElement::InvalidateDescendantDisabledStateAndFindFocusedOne(
Element& base) {
Element* focused_element = AdjustedFocusedElementInTreeScope();
bool should_blur = false;
{
EventDispatchForbiddenScope event_forbidden;
for (HTMLFormControlElement& element :
Traversal<HTMLFormControlElement>::DescendantsOf(base)) {
element.AncestorDisabledStateWasChanged();
if (focused_element == &element && element.IsDisabledFormControl())
should_blur = true;
}
}
return should_blur ? focused_element : nullptr;
}
void HTMLFieldSetElement::DisabledAttributeChanged() {
// This element must be updated before the style of nodes in its subtree gets
// recalculated.
HTMLFormControlElement::DisabledAttributeChanged();
if (Element* focused_element =
InvalidateDescendantDisabledStateAndFindFocusedOne(*this))
focused_element->blur();
}
void HTMLFieldSetElement::ChildrenChanged(const ChildrenChange& change) {
HTMLFormControlElement::ChildrenChanged(change);
Element* focused_element = nullptr;
{
EventDispatchForbiddenScope event_forbidden;
for (HTMLLegendElement& legend :
Traversal<HTMLLegendElement>::ChildrenOf(*this)) {
if (Element* element =
InvalidateDescendantDisabledStateAndFindFocusedOne(legend))
focused_element = element;
}
}
if (focused_element)
focused_element->blur();
}
bool HTMLFieldSetElement::SupportsFocus() const {
return HTMLElement::SupportsFocus() && !IsDisabledFormControl();
}
const AtomicString& HTMLFieldSetElement::FormControlType() const {
DEFINE_STATIC_LOCAL(const AtomicString, fieldset, ("fieldset"));
return fieldset;
}
LayoutObject* HTMLFieldSetElement::CreateLayoutObject(
const ComputedStyle& style) {
return LayoutObjectFactory::CreateFieldset(*this, style);
}
bool HTMLFieldSetElement::ShouldForceLegacyLayout() const {
return !RuntimeEnabledFeatures::LayoutNGFieldsetEnabled();
}
HTMLLegendElement* HTMLFieldSetElement::Legend() const {
return Traversal<HTMLLegendElement>::FirstChild(*this);
}
HTMLCollection* HTMLFieldSetElement::elements() {
return EnsureCachedCollection<HTMLCollection>(kFormControls);
}
int HTMLFieldSetElement::tabIndex() const {
return HTMLElement::tabIndex();
}
} // namespace blink
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