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