1 files changed, 79 insertions, 0 deletions
diff --git a/dom/html/HTMLPictureElement.cpp b/dom/html/HTMLPictureElement.cpp
new file mode 100644
index 0000000000..45b1e4e3e3
--- /dev/null
+++ b/dom/html/HTMLPictureElement.cpp
@@ -0,0 +1,79 @@
+/* -*- 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/HTMLPictureElement.h"
+#include "mozilla/dom/HTMLPictureElementBinding.h"
+#include "mozilla/dom/HTMLImageElement.h"
+#include "mozilla/dom/HTMLSourceElement.h"
+
+// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Picture) to add pref check.
+nsGenericHTMLElement* NS_NewHTMLPictureElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+    mozilla::dom::FromParser aFromParser) {
+  RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
+  auto* nim = nodeInfo->NodeInfoManager();
+  return new (nim) mozilla::dom::HTMLPictureElement(nodeInfo.forget());
+}
+
+namespace mozilla::dom {
+
+HTMLPictureElement::HTMLPictureElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : nsGenericHTMLElement(std::move(aNodeInfo)) {}
+
+HTMLPictureElement::~HTMLPictureElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLPictureElement)
+
+void HTMLPictureElement::RemoveChildNode(nsIContent* aKid, bool aNotify) {
+  MOZ_ASSERT(aKid);
+
+  if (auto* img = HTMLImageElement::FromNode(aKid)) {
+    img->PictureSourceRemoved();
+  } else if (auto* source = HTMLSourceElement::FromNode(aKid)) {
+    // Find all img siblings after this <source> to notify them of its demise
+    nsCOMPtr<nsIContent> nextSibling = source->GetNextSibling();
+    if (nextSibling && nextSibling->GetParentNode() == this) {
+      do {
+        if (auto* img = HTMLImageElement::FromNode(nextSibling)) {
+          img->PictureSourceRemoved(source);
+        }
+      } while ((nextSibling = nextSibling->GetNextSibling()));
+    }
+  }
+
+  nsGenericHTMLElement::RemoveChildNode(aKid, aNotify);
+}
+
+void HTMLPictureElement::InsertChildBefore(nsIContent* aKid,
+                                           nsIContent* aBeforeThis,
+                                           bool aNotify, ErrorResult& aRv) {
+  nsGenericHTMLElement::InsertChildBefore(aKid, aBeforeThis, aNotify, aRv);
+  if (aRv.Failed() || !aKid) {
+    return;
+  }
+
+  if (auto* img = HTMLImageElement::FromNode(aKid)) {
+    img->PictureSourceAdded();
+  } else if (auto* source = HTMLSourceElement::FromNode(aKid)) {
+    // Find all img siblings after this <source> to notify them of its insertion
+    nsCOMPtr<nsIContent> nextSibling = source->GetNextSibling();
+    if (nextSibling && nextSibling->GetParentNode() == this) {
+      do {
+        if (auto* img = HTMLImageElement::FromNode(nextSibling)) {
+          img->PictureSourceAdded(source);
+        }
+      } while ((nextSibling = nextSibling->GetNextSibling()));
+    }
+  }
+}
+
+JSObject* HTMLPictureElement::WrapNode(JSContext* aCx,
+                                       JS::Handle<JSObject*> aGivenProto) {
+  return HTMLPictureElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom