1 files changed, 157 insertions, 0 deletions
diff --git a/dom/html/HTMLSourceElement.h b/dom/html/HTMLSourceElement.h
new file mode 100644
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+++ b/dom/html/HTMLSourceElement.h
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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/. */
+
+#ifndef mozilla_dom_HTMLSourceElement_h
+#define mozilla_dom_HTMLSourceElement_h
+
+#include "mozilla/Attributes.h"
+#include "nsGenericHTMLElement.h"
+#include "mozilla/dom/HTMLMediaElement.h"
+
+class nsAttrValue;
+
+namespace mozilla::dom {
+
+class MediaList;
+
+class HTMLSourceElement final : public nsGenericHTMLElement {
+ public:
+  explicit HTMLSourceElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+
+  // nsISupports
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLSourceElement,
+                                           nsGenericHTMLElement)
+
+  NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLSourceElement, source)
+
+  nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+  // Override BindToTree() so that we can trigger a load when we add a
+  // child source element.
+  nsresult BindToTree(BindContext&, nsINode& aParent) override;
+
+  void UnbindFromTree(bool aNullParent) override;
+
+  // If this element's media attr matches for its owner document.  Returns true
+  // if no media attr was set.
+  bool MatchesCurrentMedia();
+
+  // True if a source tag would match the given media attribute for the
+  // specified document. Used by the preloader to determine valid <source> tags
+  // prior to DOM creation.
+  static bool WouldMatchMediaForDocument(const nsAString& aMediaStr,
+                                         const Document* aDocument);
+
+  // Return the MediaSource object if any associated with the src attribute
+  // when it was set.
+  MediaSource* GetSrcMediaSource() { return mSrcMediaSource; };
+
+  // WebIDL
+  void GetSrc(nsString& aSrc) { GetURIAttr(nsGkAtoms::src, nullptr, aSrc); }
+  void SetSrc(const nsAString& aSrc, nsIPrincipal* aTriggeringPrincipal,
+              mozilla::ErrorResult& rv) {
+    SetHTMLAttr(nsGkAtoms::src, aSrc, aTriggeringPrincipal, rv);
+  }
+
+  nsIPrincipal* GetSrcTriggeringPrincipal() const {
+    return mSrcTriggeringPrincipal;
+  }
+
+  nsIPrincipal* GetSrcsetTriggeringPrincipal() const {
+    return mSrcsetTriggeringPrincipal;
+  }
+
+  void GetType(DOMString& aType) { GetHTMLAttr(nsGkAtoms::type, aType); }
+  void SetType(const nsAString& aType, ErrorResult& rv) {
+    SetHTMLAttr(nsGkAtoms::type, aType, rv);
+  }
+
+  void GetSrcset(DOMString& aSrcset) {
+    GetHTMLAttr(nsGkAtoms::srcset, aSrcset);
+  }
+  void SetSrcset(const nsAString& aSrcset, nsIPrincipal* aTriggeringPrincipal,
+                 mozilla::ErrorResult& rv) {
+    SetHTMLAttr(nsGkAtoms::srcset, aSrcset, aTriggeringPrincipal, rv);
+  }
+
+  void GetSizes(DOMString& aSizes) { GetHTMLAttr(nsGkAtoms::sizes, aSizes); }
+  void SetSizes(const nsAString& aSizes, mozilla::ErrorResult& rv) {
+    SetHTMLAttr(nsGkAtoms::sizes, aSizes, rv);
+  }
+
+  void GetMedia(DOMString& aMedia) { GetHTMLAttr(nsGkAtoms::media, aMedia); }
+  void SetMedia(const nsAString& aMedia, mozilla::ErrorResult& rv) {
+    SetHTMLAttr(nsGkAtoms::media, aMedia, rv);
+  }
+
+  uint32_t Width() const {
+    return GetDimensionAttrAsUnsignedInt(nsGkAtoms::width, 0);
+  }
+  void SetWidth(uint32_t aWidth, ErrorResult& aRv) {
+    SetUnsignedIntAttr(nsGkAtoms::width, aWidth, 0, aRv);
+  }
+
+  uint32_t Height() const {
+    return GetDimensionAttrAsUnsignedInt(nsGkAtoms::height, 0);
+  }
+  void SetHeight(uint32_t aHeight, ErrorResult& aRv) {
+    SetUnsignedIntAttr(nsGkAtoms::height, aHeight, 0, aRv);
+  }
+
+  const StyleLockedDeclarationBlock* GetAttributesMappedForImage() const {
+    return mMappedAttributesForImage;
+  }
+
+  static bool IsAttributeMappedToImages(const nsAtom* aAttribute) {
+    return aAttribute == nsGkAtoms::width || aAttribute == nsGkAtoms::height;
+  }
+
+ protected:
+  virtual ~HTMLSourceElement();
+
+  JSObject* WrapNode(JSContext* aCx,
+                     JS::Handle<JSObject*> aGivenProto) override;
+
+  bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+                      const nsAString& aValue,
+                      nsIPrincipal* aMaybeScriptedPrincipal,
+                      nsAttrValue& aResult) override;
+
+  void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+                    const nsAttrValue* aValue, const nsAttrValue* aOldValue,
+                    nsIPrincipal* aMaybeScriptedPrincipal,
+                    bool aNotify) override;
+
+ private:
+  // Generates a new MediaList using the given input
+  void UpdateMediaList(const nsAttrValue* aValue);
+
+  void BuildMappedAttributesForImage();
+
+  bool IsInPicture() const {
+    return GetParentElement() &&
+           GetParentElement()->IsHTMLElement(nsGkAtoms::picture);
+  }
+
+  RefPtr<MediaList> mMediaList;
+  RefPtr<MediaSource> mSrcMediaSource;
+
+  // The triggering principal for the src attribute.
+  nsCOMPtr<nsIPrincipal> mSrcTriggeringPrincipal;
+
+  // The triggering principal for the srcset attribute.
+  nsCOMPtr<nsIPrincipal> mSrcsetTriggeringPrincipal;
+
+  // The mapped attributes to HTMLImageElement if we are associated with a
+  // <picture> with a valid <img>.
+  RefPtr<StyleLockedDeclarationBlock> mMappedAttributesForImage;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_HTMLSourceElement_h