168 lines
4.5 KiB
C++
168 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AnonymousContent.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/AnonymousContentBinding.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIDocument.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsStyledElement.h"
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#include "HTMLCanvasElement.h"
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namespace mozilla {
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namespace dom {
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// Ref counting and cycle collection
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NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(AnonymousContent, AddRef)
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NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(AnonymousContent, Release)
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NS_IMPL_CYCLE_COLLECTION(AnonymousContent, mContentNode)
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AnonymousContent::AnonymousContent(Element* aContentNode) :
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mContentNode(aContentNode)
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{}
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AnonymousContent::~AnonymousContent()
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{
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}
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nsCOMPtr<Element>
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AnonymousContent::GetContentNode()
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{
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return mContentNode;
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}
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void
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AnonymousContent::SetContentNode(Element* aContentNode)
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{
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mContentNode = aContentNode;
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}
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void
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AnonymousContent::SetTextContentForElement(const nsAString& aElementId,
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const nsAString& aText,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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element->SetTextContent(aText, aRv);
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}
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void
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AnonymousContent::GetTextContentForElement(const nsAString& aElementId,
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DOMString& aText,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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element->GetTextContent(aText, aRv);
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}
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void
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AnonymousContent::SetAttributeForElement(const nsAString& aElementId,
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const nsAString& aName,
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const nsAString& aValue,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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element->SetAttribute(aName, aValue, aRv);
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}
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void
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AnonymousContent::GetAttributeForElement(const nsAString& aElementId,
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const nsAString& aName,
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DOMString& aValue,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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element->GetAttribute(aName, aValue);
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}
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void
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AnonymousContent::RemoveAttributeForElement(const nsAString& aElementId,
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const nsAString& aName,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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element->RemoveAttribute(aName, aRv);
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}
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already_AddRefed<nsISupports>
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AnonymousContent::GetCanvasContext(const nsAString& aElementId,
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const nsAString& aContextId,
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ErrorResult& aRv)
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{
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Element* element = GetElementById(aElementId);
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if (!element) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return nullptr;
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}
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if (!element->IsHTMLElement(nsGkAtoms::canvas)) {
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return nullptr;
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}
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nsCOMPtr<nsISupports> context;
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HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(element);
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canvas->GetContext(aContextId, getter_AddRefs(context));
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return context.forget();
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}
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Element*
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AnonymousContent::GetElementById(const nsAString& aElementId)
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{
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// This can be made faster in the future if needed.
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nsCOMPtr<nsIAtom> elementId = do_GetAtom(aElementId);
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for (nsIContent* kid = mContentNode->GetFirstChild(); kid;
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kid = kid->GetNextNode(mContentNode)) {
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if (!kid->IsElement()) {
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continue;
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}
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nsIAtom* id = kid->AsElement()->GetID();
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if (id && id == elementId) {
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return kid->AsElement();
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}
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}
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return nullptr;
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}
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bool
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AnonymousContent::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto,
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JS::MutableHandle<JSObject*> aReflector)
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{
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return AnonymousContentBinding::Wrap(aCx, this, aGivenProto, aReflector);
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}
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} // namespace dom
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} // namespace mozilla
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