/* -*- 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/HTMLSourceElement.h" #include "mozilla/dom/HTMLSourceElementBinding.h" #include "mozilla/dom/HTMLImageElement.h" #include "mozilla/dom/ResponsiveImageSelector.h" #include "mozilla/dom/MediaSource.h" #include "nsGkAtoms.h" #include "nsIMediaList.h" #include "nsCSSParser.h" #include "nsHostObjectProtocolHandler.h" #include "mozilla/Preferences.h" NS_IMPL_NS_NEW_HTML_ELEMENT(Source) namespace mozilla { namespace dom { HTMLSourceElement::HTMLSourceElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo) : nsGenericHTMLElement(aNodeInfo) { } HTMLSourceElement::~HTMLSourceElement() { } NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLSourceElement, nsGenericHTMLElement, mSrcMediaSource) NS_IMPL_ADDREF_INHERITED(HTMLSourceElement, nsGenericHTMLElement) NS_IMPL_RELEASE_INHERITED(HTMLSourceElement, nsGenericHTMLElement) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(HTMLSourceElement) NS_INTERFACE_MAP_ENTRY(nsIDOMHTMLSourceElement) NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLElement) NS_IMPL_ELEMENT_CLONE(HTMLSourceElement) NS_IMPL_URI_ATTR(HTMLSourceElement, Src, src) NS_IMPL_STRING_ATTR(HTMLSourceElement, Type, type) NS_IMPL_STRING_ATTR(HTMLSourceElement, Srcset, srcset) NS_IMPL_STRING_ATTR(HTMLSourceElement, Sizes, sizes) NS_IMPL_STRING_ATTR(HTMLSourceElement, Media, media) bool HTMLSourceElement::MatchesCurrentMedia() { if (mMediaList) { nsIPresShell* presShell = OwnerDoc()->GetShell(); nsPresContext* pctx = presShell ? presShell->GetPresContext() : nullptr; return pctx && mMediaList->Matches(pctx, nullptr); } // No media specified return true; } /* static */ bool HTMLSourceElement::WouldMatchMediaForDocument(const nsAString& aMedia, const nsIDocument *aDocument) { if (aMedia.IsEmpty()) { return true; } nsIPresShell* presShell = aDocument->GetShell(); nsPresContext* pctx = presShell ? presShell->GetPresContext() : nullptr; nsCSSParser cssParser; RefPtr<nsMediaList> mediaList = new nsMediaList(); cssParser.ParseMediaList(aMedia, nullptr, 0, mediaList, false); return pctx && mediaList->Matches(pctx, nullptr); } void HTMLSourceElement::UpdateMediaList(const nsAttrValue* aValue) { mMediaList = nullptr; nsString mediaStr; if (!aValue || (mediaStr = aValue->GetStringValue()).IsEmpty()) { return; } nsCSSParser cssParser; mMediaList = new nsMediaList(); cssParser.ParseMediaList(mediaStr, nullptr, 0, mMediaList, false); } nsresult HTMLSourceElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName, const nsAttrValue* aValue, bool aNotify) { // If we are associated with a <picture> with a valid <img>, notify it of // responsive parameter changes Element *parent = nsINode::GetParentElement(); if (aNameSpaceID == kNameSpaceID_None && (aName == nsGkAtoms::srcset || aName == nsGkAtoms::sizes || aName == nsGkAtoms::media || aName == nsGkAtoms::type) && parent && parent->IsHTMLElement(nsGkAtoms::picture)) { nsString strVal = aValue ? aValue->GetStringValue() : EmptyString(); // Find all img siblings after this <source> and notify them of the change nsCOMPtr<nsIContent> sibling = AsContent(); while ( (sibling = sibling->GetNextSibling()) ) { if (sibling->IsHTMLElement(nsGkAtoms::img)) { HTMLImageElement *img = static_cast<HTMLImageElement*>(sibling.get()); if (aName == nsGkAtoms::srcset) { img->PictureSourceSrcsetChanged(AsContent(), strVal, aNotify); } else if (aName == nsGkAtoms::sizes) { img->PictureSourceSizesChanged(AsContent(), strVal, aNotify); } else if (aName == nsGkAtoms::media) { UpdateMediaList(aValue); img->PictureSourceMediaOrTypeChanged(AsContent(), aNotify); } else if (aName == nsGkAtoms::type) { img->PictureSourceMediaOrTypeChanged(AsContent(), aNotify); } } } } else if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::media) { UpdateMediaList(aValue); } else if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::src) { mSrcMediaSource = nullptr; if (aValue) { nsString srcStr = aValue->GetStringValue(); nsCOMPtr<nsIURI> uri; NewURIFromString(srcStr, getter_AddRefs(uri)); if (uri && IsMediaSourceURI(uri)) { NS_GetSourceForMediaSourceURI(uri, getter_AddRefs(mSrcMediaSource)); } } } return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue, aNotify); } nsresult HTMLSourceElement::BindToTree(nsIDocument *aDocument, nsIContent *aParent, nsIContent *aBindingParent, bool aCompileEventHandlers) { nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent, aBindingParent, aCompileEventHandlers); NS_ENSURE_SUCCESS(rv, rv); if (aParent && aParent->IsNodeOfType(nsINode::eMEDIA)) { HTMLMediaElement* media = static_cast<HTMLMediaElement*>(aParent); media->NotifyAddedSource(); } return NS_OK; } JSObject* HTMLSourceElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) { return HTMLSourceElementBinding::Wrap(aCx, this, aGivenProto); } } // namespace dom } // namespace mozilla