1 files changed, 87 insertions, 0 deletions
diff --git a/dom/html/HTMLPictureElement.cpp b/dom/html/HTMLPictureElement.cpp
new file mode 100644
index 0000000000..7d2b31859c
--- /dev/null
+++ b/dom/html/HTMLPictureElement.cpp
@@ -0,0 +1,87 @@
+/* -*- 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"
+
+// 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) {
+  if (aKid && aKid->IsHTMLElement(nsGkAtoms::img)) {
+    HTMLImageElement* img = HTMLImageElement::FromNode(aKid);
+    if (img) {
+      img->PictureSourceRemoved(aKid->AsContent());
+    }
+  } else if (aKid && aKid->IsHTMLElement(nsGkAtoms::source)) {
+    // Find all img siblings after this <source> to notify them of its demise
+    nsCOMPtr<nsIContent> nextSibling = aKid->GetNextSibling();
+    if (nextSibling && nextSibling->GetParentNode() == this) {
+      do {
+        HTMLImageElement* img = HTMLImageElement::FromNode(nextSibling);
+        if (img) {
+          img->PictureSourceRemoved(aKid->AsContent());
+        }
+      } while ((nextSibling = nextSibling->GetNextSibling()));
+    }
+  }
+
+  nsGenericHTMLElement::RemoveChildNode(aKid, aNotify);
+}
+
+nsresult HTMLPictureElement::InsertChildBefore(nsIContent* aKid,
+                                               nsIContent* aBeforeThis,
+                                               bool aNotify) {
+  nsresult rv =
+      nsGenericHTMLElement::InsertChildBefore(aKid, aBeforeThis, aNotify);
+
+  NS_ENSURE_SUCCESS(rv, rv);
+  NS_ENSURE_TRUE(aKid, rv);
+
+  if (aKid->IsHTMLElement(nsGkAtoms::img)) {
+    HTMLImageElement* img = HTMLImageElement::FromNode(aKid);
+    if (img) {
+      img->PictureSourceAdded(aKid->AsContent());
+    }
+  } else if (aKid->IsHTMLElement(nsGkAtoms::source)) {
+    // Find all img siblings after this <source> to notify them of its insertion
+    nsCOMPtr<nsIContent> nextSibling = aKid->GetNextSibling();
+    if (nextSibling && nextSibling->GetParentNode() == this) {
+      do {
+        HTMLImageElement* img = HTMLImageElement::FromNode(nextSibling);
+        if (img) {
+          img->PictureSourceAdded(aKid->AsContent());
+        }
+      } while ((nextSibling = nextSibling->GetNextSibling()));
+    }
+  }
+
+  return rv;
+}
+
+JSObject* HTMLPictureElement::WrapNode(JSContext* aCx,
+                                       JS::Handle<JSObject*> aGivenProto) {
+  return HTMLPictureElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom