diff options
Diffstat (limited to 'dom/html/HTMLSourceElement.cpp')
| -rw-r--r-- | dom/html/HTMLSourceElement.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/dom/html/HTMLSourceElement.cpp b/dom/html/HTMLSourceElement.cpp new file mode 100644 index 000000000..73d9c9d8c --- /dev/null +++ b/dom/html/HTMLSourceElement.cpp @@ -0,0 +1,176 @@ +/* -*- 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 |