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-rw-r--r--dom/base/AnonymousContent.cpp220
1 files changed, 220 insertions, 0 deletions
diff --git a/dom/base/AnonymousContent.cpp b/dom/base/AnonymousContent.cpp
new file mode 100644
index 0000000000..03849d4faf
--- /dev/null
+++ b/dom/base/AnonymousContent.cpp
@@ -0,0 +1,220 @@
+/* -*- 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 "AnonymousContent.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/AnonymousContentBinding.h"
+#include "nsComputedDOMStyle.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsIFrame.h"
+#include "nsStyledElement.h"
+#include "HTMLCanvasElement.h"
+
+namespace mozilla::dom {
+
+// Ref counting and cycle collection
+NS_IMPL_CYCLE_COLLECTION(AnonymousContent, mContentNode)
+
+AnonymousContent::AnonymousContent(already_AddRefed<Element> aContentNode)
+ : mContentNode(aContentNode) {
+ MOZ_ASSERT(mContentNode);
+}
+
+AnonymousContent::~AnonymousContent() = default;
+
+void AnonymousContent::SetTextContentForElement(const nsAString& aElementId,
+ const nsAString& aText,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ element->SetTextContent(aText, aRv);
+}
+
+void AnonymousContent::GetTextContentForElement(const nsAString& aElementId,
+ DOMString& aText,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ element->GetTextContent(aText, aRv);
+}
+
+void AnonymousContent::SetAttributeForElement(const nsAString& aElementId,
+ const nsAString& aName,
+ const nsAString& aValue,
+ nsIPrincipal* aSubjectPrincipal,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ element->SetAttribute(aName, aValue, aSubjectPrincipal, aRv);
+}
+
+void AnonymousContent::GetAttributeForElement(const nsAString& aElementId,
+ const nsAString& aName,
+ DOMString& aValue,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ element->GetAttribute(aName, aValue);
+}
+
+void AnonymousContent::RemoveAttributeForElement(const nsAString& aElementId,
+ const nsAString& aName,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ element->RemoveAttribute(aName, aRv);
+}
+
+already_AddRefed<nsISupports> AnonymousContent::GetCanvasContext(
+ const nsAString& aElementId, const nsAString& aContextId,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return nullptr;
+ }
+
+ if (!element->IsHTMLElement(nsGkAtoms::canvas)) {
+ return nullptr;
+ }
+
+ nsCOMPtr<nsISupports> context;
+
+ HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(element);
+ canvas->GetContext(aContextId, getter_AddRefs(context));
+
+ return context.forget();
+}
+
+already_AddRefed<Animation> AnonymousContent::SetAnimationForElement(
+ JSContext* aContext, const nsAString& aElementId,
+ JS::Handle<JSObject*> aKeyframes,
+ const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return nullptr;
+ }
+
+ return element->Animate(aContext, aKeyframes, aOptions, aRv);
+}
+
+void AnonymousContent::SetCutoutRectsForElement(
+ const nsAString& aElementId, const Sequence<OwningNonNull<DOMRect>>& aRects,
+ ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ nsRegion cutOutRegion;
+ for (const auto& r : aRects) {
+ CSSRect rect(r->X(), r->Y(), r->Width(), r->Height());
+ cutOutRegion.OrWith(CSSRect::ToAppUnits(rect));
+ }
+
+ element->SetProperty(nsGkAtoms::cutoutregion, new nsRegion(cutOutRegion),
+ nsINode::DeleteProperty<nsRegion>);
+
+ nsIFrame* frame = element->GetPrimaryFrame();
+ if (frame) {
+ frame->SchedulePaint();
+ }
+}
+
+Element* AnonymousContent::GetElementById(const nsAString& aElementId) {
+ // This can be made faster in the future if needed.
+ RefPtr<nsAtom> elementId = NS_Atomize(aElementId);
+ for (nsIContent* node = mContentNode; node;
+ node = node->GetNextNode(mContentNode)) {
+ if (!node->IsElement()) {
+ continue;
+ }
+ nsAtom* id = node->AsElement()->GetID();
+ if (id && id == elementId) {
+ return node->AsElement();
+ }
+ }
+ return nullptr;
+}
+
+bool AnonymousContent::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto,
+ JS::MutableHandle<JSObject*> aReflector) {
+ return AnonymousContent_Binding::Wrap(aCx, this, aGivenProto, aReflector);
+}
+
+void AnonymousContent::GetComputedStylePropertyValue(
+ const nsAString& aElementId, const nsACString& aPropertyName,
+ nsACString& aResult, ErrorResult& aRv) {
+ Element* element = GetElementById(aElementId);
+ if (!element) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ if (!element->OwnerDoc()->GetPresShell()) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ RefPtr<nsComputedDOMStyle> cs = new nsComputedDOMStyle(
+ element, PseudoStyleType::NotPseudo, element->OwnerDoc(),
+ nsComputedDOMStyle::StyleType::All);
+ aRv = cs->GetPropertyValue(aPropertyName, aResult);
+}
+
+void AnonymousContent::GetTargetIdForEvent(Event& aEvent, DOMString& aResult) {
+ nsCOMPtr<Element> el = do_QueryInterface(aEvent.GetOriginalTarget());
+ if (el && el->IsInNativeAnonymousSubtree() && mContentNode->Contains(el)) {
+ aResult.SetKnownLiveAtom(el->GetID(), DOMString::eTreatNullAsNull);
+ return;
+ }
+
+ aResult.SetNull();
+}
+
+void AnonymousContent::SetStyle(const nsACString& aProperty,
+ const nsACString& aValue, ErrorResult& aRv) {
+ if (!mContentNode->IsHTMLElement()) {
+ aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ return;
+ }
+
+ nsGenericHTMLElement* element = nsGenericHTMLElement::FromNode(mContentNode);
+ nsCOMPtr<nsICSSDeclaration> declaration = element->Style();
+ declaration->SetProperty(aProperty, aValue, ""_ns, IgnoreErrors());
+}
+
+} // namespace mozilla::dom