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Diffstat (limited to 'dom/html/HTMLEmbedElement.cpp')
| -rw-r--r-- | dom/html/HTMLEmbedElement.cpp | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/dom/html/HTMLEmbedElement.cpp b/dom/html/HTMLEmbedElement.cpp new file mode 100644 index 0000000000..fc29bcd77e --- /dev/null +++ b/dom/html/HTMLEmbedElement.cpp @@ -0,0 +1,270 @@ +/* -*- 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 "nsThreadUtils.h" +#include "nsIWidget.h" +#include "nsContentUtils.h" +#include "nsFrameLoader.h" +#ifdef XP_MACOSX +# include "mozilla/EventDispatcher.h" +# include "mozilla/dom/Event.h" +#endif +#include "mozilla/dom/HTMLObjectElement.h" + +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)) { + RegisterActivityObserver(); + SetIsNetworkCreated(aFromParser == FROM_PARSER_NETWORK); + + // By default we're in the loading state + AddStatesSilently(ElementState::LOADING); +} + +HTMLEmbedElement::~HTMLEmbedElement() { + UnregisterActivityObserver(); + nsImageLoadingContent::Destroy(); +} + +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, + imgINotificationObserver, nsIImageLoadingContent, nsIChannelEventSink) + +NS_IMPL_ELEMENT_CLONE(HTMLEmbedElement) + +void HTMLEmbedElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) { + nsImageLoadingContent::AsyncEventRunning(aEvent); +} + +nsresult HTMLEmbedElement::BindToTree(BindContext& aContext, nsINode& aParent) { + nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent); + NS_ENSURE_SUCCESS(rv, rv); + + rv = nsObjectLoadingContent::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(bool aNullParent) { + nsObjectLoadingContent::UnbindFromTree(aNullParent); + nsGenericHTMLElement::UnbindFromTree(aNullParent); +} + +nsresult HTMLEmbedElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName, + const nsAttrValue* aValue, + const nsAttrValue* aOldValue, + nsIPrincipal* aSubjectPrincipal, + bool aNotify) { + if (aValue) { + nsresult rv = AfterMaybeChangeAttr(aNamespaceID, aName, aNotify); + NS_ENSURE_SUCCESS(rv, rv); + } + + 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); +} + +nsresult HTMLEmbedElement::OnAttrSetButNotChanged( + int32_t aNamespaceID, nsAtom* aName, const nsAttrValueOrString& aValue, + bool aNotify) { + nsresult rv = AfterMaybeChangeAttr(aNamespaceID, aName, aNotify); + NS_ENSURE_SUCCESS(rv, rv); + + return nsGenericHTMLElement::OnAttrSetButNotChanged(aNamespaceID, aName, + aValue, aNotify); +} + +nsresult HTMLEmbedElement::AfterMaybeChangeAttr(int32_t aNamespaceID, + nsAtom* aName, bool aNotify) { + if (aNamespaceID == kNameSpaceID_None) { + if (aName == nsGkAtoms::src) { + // 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()) { + nsContentUtils::AddScriptRunner(NS_NewRunnableFunction( + "HTMLEmbedElement::LoadObject", + [self = RefPtr<HTMLEmbedElement>(this), aNotify]() { + if (self->IsInComposedDoc()) { + self->LoadObject(aNotify, true); + } + })); + return NS_OK; + } + } + } + + return NS_OK; +} + +bool HTMLEmbedElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable, + int32_t* aTabIndex) { + // Plugins that show the empty fallback should not accept focus. + if (Type() == eType_Fallback) { + if (aTabIndex) { + *aTabIndex = -1; + } + + *aIsFocusable = false; + return false; + } + + // 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(const nsMappedAttributes* aAttributes, + MappedDeclarations& aDecls) { + nsGenericHTMLElement::MapImageMarginAttributeInto(aAttributes, aDecls); + nsGenericHTMLElement::MapImageSizeAttributesInto(aAttributes, aDecls); + nsGenericHTMLElement::MapImageAlignAttributeInto(aAttributes, aDecls); +} + +static void MapAttributesIntoRuleExceptHidden( + const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) { + MapAttributesIntoRuleBase(aAttributes, aDecls); + nsGenericHTMLElement::MapCommonAttributesIntoExceptHidden(aAttributes, + aDecls); +} + +void HTMLEmbedElement::MapAttributesIntoRule( + const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) { + MapAttributesIntoRuleBase(aAttributes, aDecls); + nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls); +} + +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); +} + +ElementState HTMLEmbedElement::IntrinsicState() const { + return nsGenericHTMLElement::IntrinsicState() | ObjectState(); +} + +uint32_t HTMLEmbedElement::GetCapabilities() const { + return eSupportPlugins | 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 |