зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
3.0 KiB
C++
96 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/EventStates.h"
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#include "mozilla/dom/HTMLProgressElement.h"
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#include "mozilla/dom/HTMLProgressElementBinding.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Progress)
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namespace mozilla {
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namespace dom {
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const double HTMLProgressElement::kIndeterminatePosition = -1.0;
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const double HTMLProgressElement::kDefaultValue = 0.0;
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const double HTMLProgressElement::kDefaultMax = 1.0;
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HTMLProgressElement::HTMLProgressElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo)) {
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// We start out indeterminate
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AddStatesSilently(NS_EVENT_STATE_INDETERMINATE);
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}
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HTMLProgressElement::~HTMLProgressElement() {}
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NS_IMPL_ELEMENT_CLONE(HTMLProgressElement)
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EventStates HTMLProgressElement::IntrinsicState() const {
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EventStates state = nsGenericHTMLElement::IntrinsicState();
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if (IsIndeterminate()) {
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state |= NS_EVENT_STATE_INDETERMINATE;
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}
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return state;
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}
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bool HTMLProgressElement::ParseAttribute(int32_t aNamespaceID,
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nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max) {
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return aResult.ParseDoubleValue(aValue);
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}
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}
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return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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double HTMLProgressElement::Value() const {
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const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
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if (!attrValue || attrValue->Type() != nsAttrValue::eDoubleValue ||
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attrValue->GetDoubleValue() < 0.0) {
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return kDefaultValue;
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}
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return std::min(attrValue->GetDoubleValue(), Max());
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}
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double HTMLProgressElement::Max() const {
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const nsAttrValue* attrMax = mAttrs.GetAttr(nsGkAtoms::max);
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if (!attrMax || attrMax->Type() != nsAttrValue::eDoubleValue ||
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attrMax->GetDoubleValue() <= 0.0) {
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return kDefaultMax;
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}
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return attrMax->GetDoubleValue();
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}
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double HTMLProgressElement::Position() const {
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if (IsIndeterminate()) {
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return kIndeterminatePosition;
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}
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return Value() / Max();
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}
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bool HTMLProgressElement::IsIndeterminate() const {
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const nsAttrValue* attrValue = mAttrs.GetAttr(nsGkAtoms::value);
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return !attrValue || attrValue->Type() != nsAttrValue::eDoubleValue;
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}
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JSObject* HTMLProgressElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLProgressElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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