Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#include "mozilla/dom/HTMLMarqueeElement.h"
#include "nsGenericHTMLElement.h"
#include "nsStyleConsts.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/dom/HTMLMarqueeElementBinding.h"
#include "mozilla/dom/CustomEvent.h"
// This is to pick up the definition of FunctionStringCallback:
#include "mozilla/dom/DataTransferItemBinding.h"
#include "mozilla/dom/ShadowRoot.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Marquee)
namespace mozilla::dom {
HTMLMarqueeElement::~HTMLMarqueeElement() = default;
NS_IMPL_ELEMENT_CLONE(HTMLMarqueeElement)
static const nsAttrValue::EnumTable kBehaviorTable[] = {
{"scroll", 1}, {"slide", 2}, {"alternate", 3}, {nullptr, 0}};
// Default behavior value is "scroll".
static const nsAttrValue::EnumTable* kDefaultBehavior = &kBehaviorTable[0];
static const nsAttrValue::EnumTable kDirectionTable[] = {
{"left", 1}, {"right", 2}, {"up", 3}, {"down", 4}, {nullptr, 0}};
// Default direction value is "left".
static const nsAttrValue::EnumTable* kDefaultDirection = &kDirectionTable[0];
JSObject* HTMLMarqueeElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return dom::HTMLMarqueeElement_Binding::Wrap(aCx, this, aGivenProto);
}
nsresult HTMLMarqueeElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
if (IsInComposedDoc()) {
AttachAndSetUAShadowRoot();
}
return rv;
}
void HTMLMarqueeElement::UnbindFromTree(UnbindContext& aContext) {
if (IsInComposedDoc()) {
// We don't want to unattach the shadow root because it used to
// contain a <slot>.
NotifyUAWidgetTeardown(UnattachShadowRoot::No);
}
nsGenericHTMLElement::UnbindFromTree(aContext);
}
void HTMLMarqueeElement::GetBehavior(nsAString& aValue) {
GetEnumAttr(nsGkAtoms::behavior, kDefaultBehavior->tag, aValue);
}
void HTMLMarqueeElement::GetDirection(nsAString& aValue) {
GetEnumAttr(nsGkAtoms::direction, kDefaultDirection->tag, aValue);
}
bool HTMLMarqueeElement::ParseAttribute(int32_t aNamespaceID,
nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None) {
if ((aAttribute == nsGkAtoms::width) || (aAttribute == nsGkAtoms::height)) {
return aResult.ParseHTMLDimension(aValue);
}
if (aAttribute == nsGkAtoms::bgcolor) {
return aResult.ParseColor(aValue);
}
if (aAttribute == nsGkAtoms::behavior) {
return aResult.ParseEnumValue(aValue, kBehaviorTable, false,
kDefaultBehavior);
}
if (aAttribute == nsGkAtoms::direction) {
return aResult.ParseEnumValue(aValue, kDirectionTable, false,
kDefaultDirection);
}
if (aAttribute == nsGkAtoms::hspace || aAttribute == nsGkAtoms::vspace) {
return aResult.ParseHTMLDimension(aValue);
}
if (aAttribute == nsGkAtoms::loop) {
return aResult.ParseIntValue(aValue);
}
if (aAttribute == nsGkAtoms::scrollamount ||
aAttribute == nsGkAtoms::scrolldelay) {
return aResult.ParseNonNegativeIntValue(aValue);
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
void HTMLMarqueeElement::MapAttributesIntoRule(
MappedDeclarationsBuilder& aBuilder) {
nsGenericHTMLElement::MapImageMarginAttributeInto(aBuilder);
nsGenericHTMLElement::MapImageSizeAttributesInto(aBuilder);
nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
nsGenericHTMLElement::MapBGColorInto(aBuilder);
}
NS_IMETHODIMP_(bool)
HTMLMarqueeElement::IsAttributeMapped(const nsAtom* aAttribute) const {
static const MappedAttributeEntry* const map[] = {
sImageMarginSizeAttributeMap, sBackgroundColorAttributeMap,
sCommonAttributeMap};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc HTMLMarqueeElement::GetAttributeMappingFunction()
const {
return &MapAttributesIntoRule;
}
void HTMLMarqueeElement::DispatchEventToShadowRoot(
const nsAString& aEventTypeArg) {
// Dispatch the event to the UA Widget Shadow Root, make it inaccessible to
// document.
RefPtr<nsINode> shadow = GetShadowRoot();
MOZ_ASSERT(shadow);
RefPtr<Event> event = new Event(shadow, nullptr, nullptr);
event->InitEvent(aEventTypeArg, false, false);
event->SetTrusted(true);
shadow->DispatchEvent(*event, IgnoreErrors());
}
void HTMLMarqueeElement::Start() {
if (GetShadowRoot()) {
DispatchEventToShadowRoot(u"marquee-start"_ns);
}
}
void HTMLMarqueeElement::Stop() {
if (GetShadowRoot()) {
DispatchEventToShadowRoot(u"marquee-stop"_ns);
}
}
} // namespace mozilla::dom