gecko-dev/dom/html/HTMLProgressElement.cpp
Nathan Froyd 846d8789ee Bug 1492894 - part 1 - make the node hierarchy consistently constructed with NodeInfo&&; r=mccr8
Various places in dom/ use the pattern:

  already_AddRefed<NodeInfo> ni = ...;

which is supposed to be disallowed by our static analysis code, but
isn't, for whatever reason.  To fix our static analysis code, we need to
eliminate instances of the above pattern.

Unfortunately, eliminating this pattern requires restructuring how Nodes
are created.  Most Node subclasses take `already_AddRefed<NodeInfo>&` in
their constructors, and a few accept `already_AddRefed<NodeInfo>&&`.  We
need to enforce the latter pattern consistently, which requires changing
dozens of source files.
2018-09-21 16:45:49 -04:00

115 lines
3.1 KiB
C++

/* -*- 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/EventStates.h"
#include "mozilla/dom/HTMLProgressElement.h"
#include "mozilla/dom/HTMLProgressElementBinding.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Progress)
namespace mozilla {
namespace 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(NS_EVENT_STATE_INDETERMINATE);
}
HTMLProgressElement::~HTMLProgressElement()
{
}
NS_IMPL_ELEMENT_CLONE(HTMLProgressElement)
EventStates
HTMLProgressElement::IntrinsicState() const
{
EventStates state = nsGenericHTMLElement::IntrinsicState();
if (IsIndeterminate()) {
state |= NS_EVENT_STATE_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 (IsIndeterminate()) {
return kIndeterminatePosition;
}
return Value() / Max();
}
bool
HTMLProgressElement::IsIndeterminate() const
{
const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
return !attrValue || attrValue->Type() != nsAttrValue::eDoubleValue;
}
JSObject*
HTMLProgressElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLProgressElement_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla