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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "AvailabilityCollection.h"
#include "mozilla/ClearOnShutdown.h"
#include "PresentationAvailability.h"
namespace mozilla {
namespace dom {
/* static */
StaticAutoPtr<AvailabilityCollection> AvailabilityCollection::sSingleton;
static bool gOnceAliveNowDead = false;
/* static */
AvailabilityCollection* AvailabilityCollection::GetSingleton() {
MOZ_ASSERT(NS_IsMainThread());
if (!sSingleton && !gOnceAliveNowDead) {
sSingleton = new AvailabilityCollection();
ClearOnShutdown(&sSingleton);
}
return sSingleton;
}
AvailabilityCollection::AvailabilityCollection() {
MOZ_COUNT_CTOR(AvailabilityCollection);
}
AvailabilityCollection::~AvailabilityCollection() {
MOZ_COUNT_DTOR(AvailabilityCollection);
gOnceAliveNowDead = true;
}
void AvailabilityCollection::Add(PresentationAvailability* aAvailability) {
MOZ_ASSERT(NS_IsMainThread());
if (!aAvailability) {
return;
}
WeakPtr<PresentationAvailability> availability = aAvailability;
if (mAvailabilities.Contains(aAvailability)) {
return;
}
mAvailabilities.AppendElement(aAvailability);
}
void AvailabilityCollection::Remove(PresentationAvailability* aAvailability) {
MOZ_ASSERT(NS_IsMainThread());
if (!aAvailability) {
return;
}
WeakPtr<PresentationAvailability> availability = aAvailability;
mAvailabilities.RemoveElement(availability);
}
already_AddRefed<PresentationAvailability> AvailabilityCollection::Find(
const uint64_t aWindowId, const nsTArray<nsString>& aUrls) {
MOZ_ASSERT(NS_IsMainThread());
// Loop backwards to allow removing elements in the loop.
for (int i = mAvailabilities.Length() - 1; i >= 0; --i) {
WeakPtr<PresentationAvailability> availability = mAvailabilities[i];
if (!availability) {
// The availability object was destroyed. Remove it from the list.
mAvailabilities.RemoveElementAt(i);
continue;
}
if (availability->Equals(aWindowId, aUrls)) {
RefPtr<PresentationAvailability> matchedAvailability = availability.get();
return matchedAvailability.forget();
}
}
return nullptr;
}
} // namespace dom
} // namespace mozilla
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