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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 "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
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