Bug 946065 - Part 11: Move content/html/ to dom/ and flatten subdirectories. r=peterv

dom/html/HTMLPictureElement.cpp

@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/Preferences.h"
+static const char *kPrefPictureEnabled = "dom.image.picture.enabled";
+
+// 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)
+{
+  if (!mozilla::dom::HTMLPictureElement::IsPictureEnabled()) {
+    return new mozilla::dom::HTMLUnknownElement(aNodeInfo);
+  }
+
+  return new mozilla::dom::HTMLPictureElement(aNodeInfo);
+}
+
+namespace mozilla {
+namespace dom {
+
+HTMLPictureElement::HTMLPictureElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : nsGenericHTMLElement(aNodeInfo)
+{
+}
+
+HTMLPictureElement::~HTMLPictureElement()
+{
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(HTMLPictureElement, nsGenericHTMLElement,
+                            nsIDOMHTMLPictureElement)
+
+NS_IMPL_ELEMENT_CLONE(HTMLPictureElement)
+
+void
+HTMLPictureElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
+{
+  // Find all img siblings after this <source> to notify them of its demise
+  nsCOMPtr<nsINode> child = GetChildAt(aIndex);
+  nsCOMPtr<nsIContent> nextSibling;
+  if (child && child->Tag() == nsGkAtoms::source) {
+    nextSibling = child->GetNextSibling();
+  }
+
+  nsGenericHTMLElement::RemoveChildAt(aIndex, aNotify);
+
+  if (nextSibling && nextSibling->GetParentNode() == this) {
+    do {
+      HTMLImageElement* img = HTMLImageElement::FromContent(nextSibling);
+      if (img) {
+        img->PictureSourceRemoved(child->AsContent());
+      }
+    } while ( (nextSibling = nextSibling->GetNextSibling()) );
+  }
+}
+
+bool
+HTMLPictureElement::IsPictureEnabled()
+{
+  return HTMLImageElement::IsSrcsetEnabled() &&
+         Preferences::GetBool(kPrefPictureEnabled, false);
+}
+
+JSObject*
+HTMLPictureElement::WrapNode(JSContext* aCx)
+{
+  return HTMLPictureElementBinding::Wrap(aCx, this);
+}
+
+} // namespace dom
+} // namespace mozilla