1 files changed, 88 insertions, 0 deletions
diff --git a/dom/html/HTMLProgressElement.cpp b/dom/html/HTMLProgressElement.cpp
new file mode 100644
index 0000000000..eb15d139e0
--- /dev/null
+++ b/dom/html/HTMLProgressElement.cpp
@@ -0,0 +1,88 @@
+/* -*- 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/HTMLProgressElement.h"
+#include "mozilla/dom/HTMLProgressElementBinding.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Progress)
+
+namespace mozilla::dom {
+
+const double HTMLProgressElement::kIndeterminatePosition = -1.0;
+const double HTMLProgressElement::kDefaultValue = 0.0;
+const double HTMLProgressElement::kDefaultMax = 1.0;
+
+HTMLProgressElement::HTMLProgressElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : nsGenericHTMLElement(std::move(aNodeInfo)) {
+  // We start out indeterminate
+  AddStatesSilently(ElementState::INDETERMINATE);
+}
+
+HTMLProgressElement::~HTMLProgressElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLProgressElement)
+
+ElementState HTMLProgressElement::IntrinsicState() const {
+  ElementState state = nsGenericHTMLElement::IntrinsicState();
+
+  const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
+  if (!attrValue || attrValue->Type() != nsAttrValue::eDoubleValue) {
+    state |= ElementState::INDETERMINATE;
+  }
+
+  return state;
+}
+
+bool HTMLProgressElement::ParseAttribute(int32_t aNamespaceID,
+                                         nsAtom* aAttribute,
+                                         const nsAString& aValue,
+                                         nsIPrincipal* aMaybeScriptedPrincipal,
+                                         nsAttrValue& aResult) {
+  if (aNamespaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max) {
+      return aResult.ParseDoubleValue(aValue);
+    }
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aMaybeScriptedPrincipal, aResult);
+}
+
+double HTMLProgressElement::Value() const {
+  const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
+  if (!attrValue || attrValue->Type() != nsAttrValue::eDoubleValue ||
+      attrValue->GetDoubleValue() < 0.0) {
+    return kDefaultValue;
+  }
+
+  return std::min(attrValue->GetDoubleValue(), Max());
+}
+
+double HTMLProgressElement::Max() const {
+  const nsAttrValue* attrMax = mAttrs.GetAttr(nsGkAtoms::max);
+  if (!attrMax || attrMax->Type() != nsAttrValue::eDoubleValue ||
+      attrMax->GetDoubleValue() <= 0.0) {
+    return kDefaultMax;
+  }
+
+  return attrMax->GetDoubleValue();
+}
+
+double HTMLProgressElement::Position() const {
+  if (State().HasState(ElementState::INDETERMINATE)) {
+    return kIndeterminatePosition;
+  }
+
+  return Value() / Max();
+}
+
+JSObject* HTMLProgressElement::WrapNode(JSContext* aCx,
+                                        JS::Handle<JSObject*> aGivenProto) {
+  return HTMLProgressElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom