tor-browser

The Tor Browser
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HTMLProgressElement.cpp (3163B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/HTMLProgressElement.h"
      8 
      9 #include "mozilla/dom/HTMLProgressElementBinding.h"
     10 
     11 NS_IMPL_NS_NEW_HTML_ELEMENT(Progress)
     12 
     13 namespace mozilla::dom {
     14 
     15 HTMLProgressElement::HTMLProgressElement(
     16    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
     17    : nsGenericHTMLElement(std::move(aNodeInfo)) {
     18  // We start out indeterminate
     19  AddStatesSilently(ElementState::INDETERMINATE);
     20 }
     21 
     22 HTMLProgressElement::~HTMLProgressElement() = default;
     23 
     24 NS_IMPL_ELEMENT_CLONE(HTMLProgressElement)
     25 
     26 bool HTMLProgressElement::ParseAttribute(int32_t aNamespaceID,
     27                                         nsAtom* aAttribute,
     28                                         const nsAString& aValue,
     29                                         nsIPrincipal* aMaybeScriptedPrincipal,
     30                                         nsAttrValue& aResult) {
     31  if (aNamespaceID == kNameSpaceID_None) {
     32    if (aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max) {
     33      return aResult.ParseDoubleValue(aValue);
     34    }
     35  }
     36 
     37  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
     38                                              aMaybeScriptedPrincipal, aResult);
     39 }
     40 
     41 void HTMLProgressElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
     42                                       const nsAttrValue* aValue,
     43                                       const nsAttrValue* aOldValue,
     44                                       nsIPrincipal* aSubjectPrincipal,
     45                                       bool aNotify) {
     46  if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::value) {
     47    const bool indeterminate =
     48        !aValue || aValue->Type() != nsAttrValue::eDoubleValue;
     49    SetStates(ElementState::INDETERMINATE, indeterminate, aNotify);
     50  }
     51  return nsGenericHTMLElement::AfterSetAttr(
     52      aNameSpaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
     53 }
     54 
     55 double HTMLProgressElement::Value() const {
     56  const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
     57  if (!attrValue || attrValue->Type() != nsAttrValue::eDoubleValue ||
     58      attrValue->GetDoubleValue() < 0.0) {
     59    return 0.0;
     60  }
     61 
     62  return std::min(attrValue->GetDoubleValue(), Max());
     63 }
     64 
     65 double HTMLProgressElement::Max() const {
     66  const nsAttrValue* attrMax = mAttrs.GetAttr(nsGkAtoms::max);
     67  if (!attrMax || attrMax->Type() != nsAttrValue::eDoubleValue ||
     68      attrMax->GetDoubleValue() <= 0.0) {
     69    return 1.0;
     70  }
     71 
     72  return attrMax->GetDoubleValue();
     73 }
     74 
     75 double HTMLProgressElement::Position() const {
     76  if (State().HasState(ElementState::INDETERMINATE)) {
     77    return -1.0;
     78  }
     79 
     80  return Value() / Max();
     81 }
     82 
     83 JSObject* HTMLProgressElement::WrapNode(JSContext* aCx,
     84                                        JS::Handle<JSObject*> aGivenProto) {
     85  return HTMLProgressElement_Binding::Wrap(aCx, this, aGivenProto);
     86 }
     87 
     88 }  // namespace mozilla::dom