зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.4 KiB
C++
90 строки
2.4 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 "AvailabilityCollection.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "PresentationAvailability.h"
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namespace mozilla {
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namespace dom {
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/* static */
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StaticAutoPtr<AvailabilityCollection> AvailabilityCollection::sSingleton;
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static bool gOnceAliveNowDead = false;
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/* static */
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AvailabilityCollection* AvailabilityCollection::GetSingleton() {
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MOZ_ASSERT(NS_IsMainThread());
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if (!sSingleton && !gOnceAliveNowDead) {
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sSingleton = new AvailabilityCollection();
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ClearOnShutdown(&sSingleton);
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}
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return sSingleton;
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}
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AvailabilityCollection::AvailabilityCollection() {
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MOZ_COUNT_CTOR(AvailabilityCollection);
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}
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AvailabilityCollection::~AvailabilityCollection() {
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MOZ_COUNT_DTOR(AvailabilityCollection);
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gOnceAliveNowDead = true;
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}
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void AvailabilityCollection::Add(PresentationAvailability* aAvailability) {
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MOZ_ASSERT(NS_IsMainThread());
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if (!aAvailability) {
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return;
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}
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WeakPtr<PresentationAvailability> availability = aAvailability;
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if (mAvailabilities.Contains(aAvailability)) {
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return;
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}
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mAvailabilities.AppendElement(aAvailability);
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}
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void AvailabilityCollection::Remove(PresentationAvailability* aAvailability) {
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MOZ_ASSERT(NS_IsMainThread());
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if (!aAvailability) {
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return;
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}
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WeakPtr<PresentationAvailability> availability = aAvailability;
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mAvailabilities.RemoveElement(availability);
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}
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already_AddRefed<PresentationAvailability> AvailabilityCollection::Find(
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const uint64_t aWindowId, const nsTArray<nsString>& aUrls) {
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MOZ_ASSERT(NS_IsMainThread());
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// Loop backwards to allow removing elements in the loop.
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for (int i = mAvailabilities.Length() - 1; i >= 0; --i) {
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WeakPtr<PresentationAvailability> availability = mAvailabilities[i];
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if (!availability) {
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// The availability object was destroyed. Remove it from the list.
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mAvailabilities.RemoveElementAt(i);
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continue;
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}
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if (availability->Equals(aWindowId, aUrls)) {
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RefPtr<PresentationAvailability> matchedAvailability = availability.get();
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return matchedAvailability.forget();
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}
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}
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return nullptr;
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}
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} // namespace dom
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} // namespace mozilla
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