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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/dom/Element.h"
#include "mozilla/dom/AnonymousContentBinding.h"
#include "nsComputedDOMStyle.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIDocument.h"
#include "nsIDOMHTMLCollection.h"
#include "nsIFrame.h"
#include "nsStyledElement.h"
#include "HTMLCanvasElement.h"
namespace mozilla {
namespace dom {
// Ref counting and cycle collection
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(AnonymousContent, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(AnonymousContent, Release)
NS_IMPL_CYCLE_COLLECTION(AnonymousContent, mContentNode)
AnonymousContent::AnonymousContent(Element* aContentNode) :
mContentNode(aContentNode)
{}
AnonymousContent::~AnonymousContent()
{
}
Element*
AnonymousContent::GetContentNode()
{
return mContentNode;
}
void
AnonymousContent::SetContentNode(Element* aContentNode)
{
mContentNode = aContentNode;
}
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,
ErrorResult& aRv)
{
Element* element = GetElementById(aElementId);
if (!element) {
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
return;
}
element->SetAttribute(aName, aValue, 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.
nsCOMPtr<nsIAtom> elementId = NS_Atomize(aElementId);
for (nsIContent* node = mContentNode; node;
node = node->GetNextNode(mContentNode)) {
if (!node->IsElement()) {
continue;
}
nsIAtom* 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 AnonymousContentBinding::Wrap(aCx, this, aGivenProto, aReflector);
}
void
AnonymousContent::GetComputedStylePropertyValue(const nsAString& aElementId,
const nsAString& aPropertyName,
DOMString& aResult,
ErrorResult& aRv)
{
Element* element = GetElementById(aElementId);
if (!element) {
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
return;
}
nsIPresShell* shell = element->OwnerDoc()->GetShell();
if (!shell) {
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
return;
}
RefPtr<nsComputedDOMStyle> cs =
new nsComputedDOMStyle(element,
NS_LITERAL_STRING(""),
element->OwnerDoc(),
nsComputedDOMStyle::eAll);
aRv = cs->GetPropertyValue(aPropertyName, aResult);
}
} // namespace dom
} // namespace mozilla
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