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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/BindContext.h"
#include "mozilla/dom/HTMLEmbedElement.h"
#include "mozilla/dom/HTMLEmbedElementBinding.h"
#include "mozilla/dom/ElementInlines.h"
#include "mozilla/dom/Document.h"
#include "nsObjectLoadingContent.h"
#include "nsThreadUtils.h"
#include "nsIWidget.h"
#include "nsContentUtils.h"
#include "nsFrameLoader.h"
#ifdef XP_MACOSX
# include "mozilla/EventDispatcher.h"
# include "mozilla/dom/Event.h"
#endif
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Embed)
namespace mozilla::dom {
HTMLEmbedElement::HTMLEmbedElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
FromParser aFromParser)
: nsGenericHTMLElement(std::move(aNodeInfo)) {
SetIsNetworkCreated(aFromParser == FROM_PARSER_NETWORK);
}
HTMLEmbedElement::~HTMLEmbedElement() = default;
NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLEmbedElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLEmbedElement,
nsGenericHTMLElement)
nsObjectLoadingContent::Traverse(tmp, cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLEmbedElement,
nsGenericHTMLElement)
nsObjectLoadingContent::Unlink(tmp);
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(
HTMLEmbedElement, nsGenericHTMLElement, nsIRequestObserver,
nsIStreamListener, nsFrameLoaderOwner, nsIObjectLoadingContent,
nsIChannelEventSink)
NS_IMPL_ELEMENT_CLONE(HTMLEmbedElement)
nsresult HTMLEmbedElement::BindToTree(BindContext& aContext, nsINode& aParent) {
nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
if (IsInComposedDoc()) {
void (HTMLEmbedElement::*start)() = &HTMLEmbedElement::StartObjectLoad;
nsContentUtils::AddScriptRunner(
NewRunnableMethod("dom::HTMLEmbedElement::BindToTree", this, start));
}
return NS_OK;
}
void HTMLEmbedElement::UnbindFromTree(UnbindContext& aContext) {
nsObjectLoadingContent::UnbindFromTree();
nsGenericHTMLElement::UnbindFromTree(aContext);
}
void HTMLEmbedElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify) {
if (aValue) {
AfterMaybeChangeAttr(aNamespaceID, aName, aNotify);
}
if (aNamespaceID == kNameSpaceID_None &&
aName == nsGkAtoms::allowfullscreen && mFrameLoader) {
if (auto* bc = mFrameLoader->GetExtantBrowsingContext()) {
MOZ_ALWAYS_SUCCEEDS(bc->SetFullscreenAllowedByOwner(AllowFullscreen()));
}
}
return nsGenericHTMLElement::AfterSetAttr(
aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
}
void HTMLEmbedElement::OnAttrSetButNotChanged(int32_t aNamespaceID,
nsAtom* aName,
const nsAttrValueOrString& aValue,
bool aNotify) {
AfterMaybeChangeAttr(aNamespaceID, aName, aNotify);
return nsGenericHTMLElement::OnAttrSetButNotChanged(aNamespaceID, aName,
aValue, aNotify);
}
void HTMLEmbedElement::AfterMaybeChangeAttr(int32_t aNamespaceID, nsAtom* aName,
bool aNotify) {
if (aNamespaceID != kNameSpaceID_None || aName != nsGkAtoms::src) {
return;
}
// If aNotify is false, we are coming from the parser or some such place;
// we'll get bound after all the attributes have been set, so we'll do the
// object load from BindToTree.
// Skip the LoadObject call in that case.
// We also don't want to start loading the object when we're not yet in
// a document, just in case that the caller wants to set additional
// attributes before inserting the node into the document.
if (!aNotify || !IsInComposedDoc() || BlockEmbedOrObjectContentLoading()) {
return;
}
nsContentUtils::AddScriptRunner(NS_NewRunnableFunction(
"HTMLEmbedElement::LoadObject",
[self = RefPtr<HTMLEmbedElement>(this), aNotify]() {
if (self->IsInComposedDoc()) {
self->LoadObject(aNotify, true);
}
}));
}
int32_t HTMLEmbedElement::TabIndexDefault() {
// Only when we loaded a sub-document, <embed> should be tabbable by default
// because it's a navigable containers mentioned in 6.6.3 The tabindex
// attribute in the standard (see "If the value is null" section).
// https://html.spec.whatwg.org/#the-tabindex-attribute
// Otherwise, the default tab-index of <embed> is expected as -1 in a WPT:
// https://searchfox.org/mozilla-central/rev/7d98e651953f3135d91e98fa6d33efa131aec7ea/testing/web-platform/tests/html/interaction/focus/sequential-focus-navigation-and-the-tabindex-attribute/tabindex-getter.html#63
return Type() == ObjectType::Document ? 0 : -1;
}
bool HTMLEmbedElement::IsHTMLFocusable(IsFocusableFlags aFlags,
bool* aIsFocusable, int32_t* aTabIndex) {
// Has non-plugin content: let the plugin decide what to do in terms of
// internal focus from mouse clicks
if (aTabIndex) {
*aTabIndex = TabIndex();
}
*aIsFocusable = true;
// Let the plugin decide, so override.
return true;
}
bool HTMLEmbedElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::align) {
return ParseAlignValue(aValue, aResult);
}
if (aAttribute == nsGkAtoms::width || aAttribute == nsGkAtoms::height ||
aAttribute == nsGkAtoms::hspace || aAttribute == nsGkAtoms::vspace) {
return aResult.ParseHTMLDimension(aValue);
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
static void MapAttributesIntoRuleBase(MappedDeclarationsBuilder& aBuilder) {
nsGenericHTMLElement::MapImageMarginAttributeInto(aBuilder);
nsGenericHTMLElement::MapImageSizeAttributesInto(aBuilder);
nsGenericHTMLElement::MapImageAlignAttributeInto(aBuilder);
}
static void MapAttributesIntoRuleExceptHidden(
MappedDeclarationsBuilder& aBuilder) {
MapAttributesIntoRuleBase(aBuilder);
nsGenericHTMLElement::MapCommonAttributesIntoExceptHidden(aBuilder);
}
void HTMLEmbedElement::MapAttributesIntoRule(
MappedDeclarationsBuilder& aBuilder) {
MapAttributesIntoRuleBase(aBuilder);
nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
}
NS_IMETHODIMP_(bool)
HTMLEmbedElement::IsAttributeMapped(const nsAtom* aAttribute) const {
static const MappedAttributeEntry* const map[] = {
sCommonAttributeMap,
sImageMarginSizeAttributeMap,
sImageBorderAttributeMap,
sImageAlignAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc HTMLEmbedElement::GetAttributeMappingFunction()
const {
return &MapAttributesIntoRuleExceptHidden;
}
void HTMLEmbedElement::StartObjectLoad(bool aNotify, bool aForceLoad) {
// BindToTree can call us asynchronously, and we may be removed from the tree
// in the interim
if (!IsInComposedDoc() || !OwnerDoc()->IsActive() ||
BlockEmbedOrObjectContentLoading()) {
return;
}
LoadObject(aNotify, aForceLoad);
SetIsNetworkCreated(false);
}
uint32_t HTMLEmbedElement::GetCapabilities() const {
return eAllowPluginSkipChannel | eSupportImages | eSupportDocuments;
}
void HTMLEmbedElement::DestroyContent() {
nsObjectLoadingContent::Destroy();
nsGenericHTMLElement::DestroyContent();
}
nsresult HTMLEmbedElement::CopyInnerTo(HTMLEmbedElement* aDest) {
nsresult rv = nsGenericHTMLElement::CopyInnerTo(aDest);
NS_ENSURE_SUCCESS(rv, rv);
if (aDest->OwnerDoc()->IsStaticDocument()) {
CreateStaticClone(aDest);
}
return rv;
}
JSObject* HTMLEmbedElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLEmbedElement_Binding::Wrap(aCx, this, aGivenProto);
}
nsContentPolicyType HTMLEmbedElement::GetContentPolicyType() const {
return nsIContentPolicy::TYPE_INTERNAL_EMBED;
}
} // namespace mozilla::dom
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