mirror of
https://github.com/mozilla/gecko-dev.git
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117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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 "ControllerConnectionCollection.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "nsIPresentationService.h"
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#include "PresentationConnection.h"
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namespace mozilla {
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namespace dom {
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/* static */
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StaticAutoPtr<ControllerConnectionCollection>
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ControllerConnectionCollection::sSingleton;
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/* static */ ControllerConnectionCollection*
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ControllerConnectionCollection::GetSingleton()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!sSingleton) {
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sSingleton = new ControllerConnectionCollection();
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ClearOnShutdown(&sSingleton);
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}
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return sSingleton;
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}
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ControllerConnectionCollection::ControllerConnectionCollection()
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{
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MOZ_COUNT_CTOR(ControllerConnectionCollection);
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}
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ControllerConnectionCollection::~ControllerConnectionCollection()
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{
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MOZ_COUNT_DTOR(ControllerConnectionCollection);
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}
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void
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ControllerConnectionCollection::AddConnection(
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PresentationConnection* aConnection,
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const uint8_t aRole)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (aRole != nsIPresentationService::ROLE_CONTROLLER) {
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MOZ_ASSERT(false, "This is allowed only to be called at controller side.");
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return;
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}
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if (!aConnection) {
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return;
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}
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WeakPtr<PresentationConnection> connection = aConnection;
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if (mConnections.Contains(connection)) {
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return;
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}
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mConnections.AppendElement(connection);
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}
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void
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ControllerConnectionCollection::RemoveConnection(
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PresentationConnection* aConnection,
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const uint8_t aRole)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (aRole != nsIPresentationService::ROLE_CONTROLLER) {
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MOZ_ASSERT(false, "This is allowed only to be called at controller side.");
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return;
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}
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if (!aConnection) {
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return;
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}
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WeakPtr<PresentationConnection> connection = aConnection;
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mConnections.RemoveElement(connection);
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}
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already_AddRefed<PresentationConnection>
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ControllerConnectionCollection::FindConnection(
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uint64_t aWindowId,
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const nsAString& aId,
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const uint8_t aRole)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (aRole != nsIPresentationService::ROLE_CONTROLLER) {
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MOZ_ASSERT(false, "This is allowed only to be called at controller side.");
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return nullptr;
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}
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// Loop backwards to allow removing elements in the loop.
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for (int i = mConnections.Length() - 1; i >= 0; --i) {
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WeakPtr<PresentationConnection> connection = mConnections[i];
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if (!connection) {
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// The connection was destroyed. Remove it from the list.
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mConnections.RemoveElementAt(i);
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continue;
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}
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if (connection->Equals(aWindowId, aId)) {
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RefPtr<PresentationConnection> matchedConnection = connection.get();
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return matchedConnection.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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