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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLLegendElement.h"
#include "mozilla/dom/ElementBinding.h"
#include "mozilla/dom/HTMLLegendElementBinding.h"
#include "nsFocusManager.h"
#include "nsIFrame.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Legend)
namespace mozilla::dom {
HTMLLegendElement::~HTMLLegendElement() = default;
NS_IMPL_ELEMENT_CLONE(HTMLLegendElement)
nsIContent* HTMLLegendElement::GetFieldSet() const {
nsIContent* parent = GetParent();
if (parent && parent->IsHTMLElement(nsGkAtoms::fieldset)) {
return parent;
}
return nullptr;
}
bool HTMLLegendElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
// this contains center, because IE4 does
static const nsAttrValue::EnumTable kAlignTable[] = {
{"left", LegendAlignValue::Left},
{"right", LegendAlignValue::Right},
{"center", LegendAlignValue::Center},
{nullptr, 0}};
if (aAttribute == nsGkAtoms::align && aNamespaceID == kNameSpaceID_None) {
return aResult.ParseEnumValue(aValue, kAlignTable, false);
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
nsChangeHint HTMLLegendElement::GetAttributeChangeHint(const nsAtom* aAttribute,
int32_t aModType) const {
nsChangeHint retval =
nsGenericHTMLElement::GetAttributeChangeHint(aAttribute, aModType);
if (aAttribute == nsGkAtoms::align) {
retval |= NS_STYLE_HINT_REFLOW;
}
return retval;
}
nsresult HTMLLegendElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
return nsGenericHTMLElement::BindToTree(aContext, aParent);
}
void HTMLLegendElement::UnbindFromTree(bool aNullParent) {
nsGenericHTMLElement::UnbindFromTree(aNullParent);
}
void HTMLLegendElement::Focus(const FocusOptions& aOptions,
const CallerType aCallerType,
ErrorResult& aError) {
nsIFrame* frame = GetPrimaryFrame();
if (!frame) {
return;
}
if (frame->IsFocusable()) {
nsGenericHTMLElement::Focus(aOptions, aCallerType, aError);
return;
}
// If the legend isn't focusable, focus whatever is focusable following
// the legend instead, bug 81481.
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return;
}
RefPtr<Element> result;
aError = fm->MoveFocus(nullptr, this, nsIFocusManager::MOVEFOCUS_FORWARD,
nsIFocusManager::FLAG_NOPARENTFRAME |
nsFocusManager::ProgrammaticFocusFlags(aOptions),
getter_AddRefs(result));
}
Result<bool, nsresult> HTMLLegendElement::PerformAccesskey(
bool aKeyCausesActivation, bool aIsTrustedEvent) {
FocusOptions options;
ErrorResult rv;
Focus(options, CallerType::System, rv);
if (rv.Failed()) {
return Err(rv.StealNSResult());
}
// XXXedgar, do we need to check whether the focus is really changed?
return true;
}
HTMLLegendElement::LegendAlignValue HTMLLegendElement::LogicalAlign(
mozilla::WritingMode aCBWM) const {
const nsAttrValue* attr = GetParsedAttr(nsGkAtoms::align);
if (!attr || attr->Type() != nsAttrValue::eEnum) {
return LegendAlignValue::InlineStart;
}
auto value = static_cast<LegendAlignValue>(attr->GetEnumValue());
switch (value) {
case LegendAlignValue::Left:
return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineStart
: LegendAlignValue::InlineEnd;
case LegendAlignValue::Right:
return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineEnd
: LegendAlignValue::InlineStart;
default:
return value;
}
}
HTMLFormElement* HTMLLegendElement::GetForm() const {
nsCOMPtr<nsIFormControl> fieldsetControl = do_QueryInterface(GetFieldSet());
return fieldsetControl ? fieldsetControl->GetForm() : nullptr;
}
JSObject* HTMLLegendElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLLegendElement_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace mozilla::dom
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