gecko/docshell/base/timeline/TimelineConsumers.cpp

66 lines
1.7 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/TimelineConsumers.h"
namespace mozilla {
unsigned long TimelineConsumers::sActiveConsumers = 0;
LinkedList<ObservedDocShell>* TimelineConsumers::sObservedDocShells = nullptr;
LinkedList<ObservedDocShell>&
TimelineConsumers::GetOrCreateObservedDocShellsList()
{
if (!sObservedDocShells) {
sObservedDocShells = new LinkedList<ObservedDocShell>();
}
return *sObservedDocShells;
}
void
TimelineConsumers::AddConsumer(nsDocShell* aDocShell,
UniquePtr<ObservedDocShell>& aObservedPtr)
{
MOZ_ASSERT(!aObservedPtr);
sActiveConsumers++;
aObservedPtr.reset(new ObservedDocShell(aDocShell));
GetOrCreateObservedDocShellsList().insertFront(aObservedPtr.get());
}
void
TimelineConsumers::RemoveConsumer(nsDocShell* aDocShell,
UniquePtr<ObservedDocShell>& aObservedPtr)
{
MOZ_ASSERT(aObservedPtr);
sActiveConsumers--;
aObservedPtr.get()->remove();
aObservedPtr.reset(nullptr);
}
bool
TimelineConsumers::IsEmpty()
{
return sActiveConsumers == 0;
}
bool
TimelineConsumers::GetKnownDocShells(Vector<nsRefPtr<nsDocShell>>& aStore)
{
const LinkedList<ObservedDocShell>& docShells = GetOrCreateObservedDocShellsList();
for (const ObservedDocShell* rds = docShells.getFirst();
rds != nullptr;
rds = rds->getNext()) {
if (!aStore.append(**rds)) {
return false;
}
}
return true;
}
} // namespace mozilla