зеркало из https://github.com/mozilla/gecko-dev.git
77 строки
2.6 KiB
C++
77 строки
2.6 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/dom/IdleDeadline.h"
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#include <algorithm>
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/IdleDeadlineBinding.h"
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#include "mozilla/dom/Performance.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsDOMNavigationTiming.h"
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#include "nsPIDOMWindow.h"
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(IdleDeadline, mWindow, mGlobal)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleDeadline)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleDeadline)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleDeadline)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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IdleDeadline::IdleDeadline(nsPIDOMWindowInner* aWindow, bool aDidTimeout,
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DOMHighResTimeStamp aDeadline)
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: mWindow(aWindow), mDidTimeout(aDidTimeout), mDeadline(aDeadline) {
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bool hasHadSHO;
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mGlobal = aWindow->GetDoc()->GetScriptHandlingObject(hasHadSHO);
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}
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IdleDeadline::IdleDeadline(nsIGlobalObject* aGlobal, bool aDidTimeout,
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DOMHighResTimeStamp aDeadline)
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: mWindow(nullptr),
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mGlobal(aGlobal),
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mDidTimeout(aDidTimeout),
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mDeadline(aDeadline) {}
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IdleDeadline::~IdleDeadline() = default;
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JSObject* IdleDeadline::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return IdleDeadline_Binding::Wrap(aCx, this, aGivenProto);
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}
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DOMHighResTimeStamp IdleDeadline::TimeRemaining() {
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if (mDidTimeout) {
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return 0.0;
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}
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if (mWindow) {
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RefPtr<Performance> performance = mWindow->GetPerformance();
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if (!performance) {
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// If there is no performance object the window is partially torn
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// down, so we can safely say that there is no time remaining.
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return 0.0;
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}
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// The web API doesn't expect deadlines > 50ms, but conversion from the
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// internal API may lead to some rounding errors.
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return std::min(std::max(mDeadline - performance->Now(), 0.0), 50.0);
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}
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// If there's no window, we're in a system scope, and can just use
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// a high-resolution TimeStamp::Now();
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auto timestamp = TimeStamp::Now() - TimeStamp::ProcessCreation();
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return std::max(mDeadline - timestamp.ToMilliseconds(), 0.0);
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}
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bool IdleDeadline::DidTimeout() const { return mDidTimeout; }
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} // namespace mozilla::dom
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