PaymentApp: Introduce PaymentAppDatabase class.

content/browser/payments/payment_app_context_impl.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/payments/payment_app_context_impl.h"
+
+#include <utility>
+
+#include "base/bind.h"
+#include "base/memory/ptr_util.h"
+#include "base/stl_util.h"
+#include "content/browser/payments/payment_app_database.h"
+#include "content/browser/payments/payment_app_manager.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace content {
+
+PaymentAppContextImpl::PaymentAppContextImpl() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+}
+
+void PaymentAppContextImpl::Init(
+    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&PaymentAppContextImpl::CreatePaymentAppDatabaseOnIO, this,
+                 service_worker_context));
+}
+
+void PaymentAppContextImpl::Shutdown() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&PaymentAppContextImpl::ShutdownOnIO, this));
+}
+
+void PaymentAppContextImpl::CreateService(
+    mojo::InterfaceRequest<payments::mojom::PaymentAppManager> request) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&PaymentAppContextImpl::CreateServiceOnIOThread, this,
+                 base::Passed(&request)));
+}
+
+void PaymentAppContextImpl::ServiceHadConnectionError(
+    PaymentAppManager* service) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  DCHECK(base::ContainsKey(services_, service));
+
+  services_.erase(service);
+}
+
+PaymentAppDatabase* PaymentAppContextImpl::payment_app_database() const {
+  return payment_app_database_.get();
+}
+
+void PaymentAppContextImpl::GetAllManifests(
+    const GetAllManifestsCallback& callback) {
+  NOTIMPLEMENTED();
+}
+
+PaymentAppContextImpl::~PaymentAppContextImpl() {
+  DCHECK(services_.empty());
+  DCHECK(!payment_app_database_);
+}
+
+void PaymentAppContextImpl::CreatePaymentAppDatabaseOnIO(
+    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  payment_app_database_ =
+      base::WrapUnique(new PaymentAppDatabase(service_worker_context));
+}
+
+void PaymentAppContextImpl::CreateServiceOnIOThread(
+    mojo::InterfaceRequest<payments::mojom::PaymentAppManager> request) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  PaymentAppManager* service = new PaymentAppManager(this, std::move(request));
+  services_[service] = base::WrapUnique(service);
+}
+
+void PaymentAppContextImpl::ShutdownOnIO() {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  services_.clear();
+  payment_app_database_.reset();
+}
+
+}  // namespace content