1 files changed, 105 insertions, 0 deletions
diff --git a/dom/html/HTMLFontElement.cpp b/dom/html/HTMLFontElement.cpp
new file mode 100644
index 0000000000..78937848d2
--- /dev/null
+++ b/dom/html/HTMLFontElement.cpp
@@ -0,0 +1,105 @@
+/* -*- 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 "HTMLFontElement.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/HTMLFontElementBinding.h"
+#include "mozilla/MappedDeclarations.h"
+#include "nsAttrValueInlines.h"
+#include "nsMappedAttributes.h"
+#include "nsContentUtils.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Font)
+
+namespace mozilla::dom {
+
+HTMLFontElement::~HTMLFontElement() = default;
+
+JSObject* HTMLFontElement::WrapNode(JSContext* aCx,
+                                    JS::Handle<JSObject*> aGivenProto) {
+  return HTMLFontElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+NS_IMPL_ELEMENT_CLONE(HTMLFontElement)
+
+bool HTMLFontElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+                                     const nsAString& aValue,
+                                     nsIPrincipal* aMaybeScriptedPrincipal,
+                                     nsAttrValue& aResult) {
+  if (aNamespaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::size) {
+      int32_t size = nsContentUtils::ParseLegacyFontSize(aValue);
+      if (size) {
+        aResult.SetTo(size, &aValue);
+        return true;
+      }
+      return false;
+    }
+    if (aAttribute == nsGkAtoms::color) {
+      return aResult.ParseColor(aValue);
+    }
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aMaybeScriptedPrincipal, aResult);
+}
+
+void HTMLFontElement::MapAttributesIntoRule(
+    const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
+  // face: string list
+  if (!aDecls.PropertyIsSet(eCSSProperty_font_family)) {
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::face);
+    if (value && value->Type() == nsAttrValue::eString &&
+        !value->IsEmptyString()) {
+      aDecls.SetFontFamily(NS_ConvertUTF16toUTF8(value->GetStringValue()));
+    }
+  }
+  // size: int
+  if (!aDecls.PropertyIsSet(eCSSProperty_font_size)) {
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
+    if (value && value->Type() == nsAttrValue::eInteger)
+      aDecls.SetKeywordValue(eCSSProperty_font_size, value->GetIntegerValue());
+  }
+  if (!aDecls.PropertyIsSet(eCSSProperty_color)) {
+    // color: color
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::color);
+    nscolor color;
+    if (value && value->GetColorValue(color)) {
+      aDecls.SetColorValue(eCSSProperty_color, color);
+    }
+  }
+  if (aDecls.Document()->GetCompatibilityMode() == eCompatibility_NavQuirks) {
+    // Make <a><font color="red">text</font></a> give the text a red underline
+    // in quirks mode.  The StyleTextDecorationLine_COLOR_OVERRIDE flag only
+    // affects quirks mode rendering.
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::color);
+    nscolor color;
+    if (value && value->GetColorValue(color)) {
+      aDecls.SetTextDecorationColorOverride();
+    }
+  }
+
+  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
+}
+
+NS_IMETHODIMP_(bool)
+HTMLFontElement::IsAttributeMapped(const nsAtom* aAttribute) const {
+  static const MappedAttributeEntry attributes[] = {
+      {nsGkAtoms::face}, {nsGkAtoms::size}, {nsGkAtoms::color}, {nullptr}};
+
+  static const MappedAttributeEntry* const map[] = {
+      attributes,
+      sCommonAttributeMap,
+  };
+
+  return FindAttributeDependence(aAttribute, map);
+}
+
+nsMapRuleToAttributesFunc HTMLFontElement::GetAttributeMappingFunction() const {
+  return &MapAttributesIntoRule;
+}
+
+}  // namespace mozilla::dom