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// 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/appcache/appcache_navigation_handle_core.h"
#include <map>
#include <utility>
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "content/browser/appcache/appcache_host.h"
#include "content/browser/appcache/appcache_navigation_handle.h"
#include "content/browser/appcache/appcache_service_impl.h"
#include "content/browser/appcache/chrome_appcache_service.h"
#include "content/public/browser/browser_thread.h"
namespace {
// Map of AppCache host id to the AppCacheNavigationHandleCore instance.
// Accessed on the IO thread only.
using AppCacheHandleMap =
std::map <int, content::AppCacheNavigationHandleCore*>;
base::LazyInstance<AppCacheHandleMap>::DestructorAtExit g_appcache_handle_map =
LAZY_INSTANCE_INITIALIZER;
} // namespace
namespace content {
AppCacheNavigationHandleCore::AppCacheNavigationHandleCore(
base::WeakPtr<AppCacheNavigationHandle> ui_handle,
ChromeAppCacheService* appcache_service,
int appcache_host_id)
: appcache_service_(appcache_service),
appcache_host_id_(appcache_host_id),
ui_handle_(ui_handle) {
// The AppCacheNavigationHandleCore is created on the UI thread but
// should only be accessed from the IO thread afterwards.
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
AppCacheNavigationHandleCore::~AppCacheNavigationHandleCore() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
precreated_host_.reset(nullptr);
g_appcache_handle_map.Get().erase(appcache_host_id_);
}
void AppCacheNavigationHandleCore::Initialize() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(precreated_host_.get() == nullptr);
precreated_host_.reset(
new AppCacheHost(appcache_host_id_, this, GetAppCacheService()));
DCHECK(g_appcache_handle_map.Get().find(appcache_host_id_) ==
g_appcache_handle_map.Get().end());
g_appcache_handle_map.Get()[appcache_host_id_] = this;
}
// static
std::unique_ptr<AppCacheHost> AppCacheNavigationHandleCore::GetPrecreatedHost(
int host_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
auto index = g_appcache_handle_map.Get().find(host_id);
if (index != g_appcache_handle_map.Get().end()) {
AppCacheNavigationHandleCore* instance = index->second;
DCHECK(instance);
return std::move(instance->precreated_host_);
}
return std::unique_ptr<AppCacheHost>();
}
AppCacheServiceImpl* AppCacheNavigationHandleCore::GetAppCacheService() {
return static_cast<AppCacheServiceImpl*>(appcache_service_.get());
}
void AppCacheNavigationHandleCore::OnCacheSelected(int host_id,
const AppCacheInfo& info) {
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnStatusChanged(
const std::vector<int>& host_ids,
AppCacheStatus status) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnEventRaised(
const std::vector<int>& host_ids,
AppCacheEventID event_id) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnProgressEventRaised(
const std::vector<int>& host_ids,
const GURL& url,
int num_total,
int num_complete) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnErrorEventRaised(
const std::vector<int>& host_ids,
const AppCacheErrorDetails& details) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnLogMessage(int host_id,
AppCacheLogLevel log_level,
const std::string& message) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnContentBlocked(int host_id,
const GURL& manifest_url) {
// Should never be called.
DCHECK(false);
}
void AppCacheNavigationHandleCore::OnSetSubresourceFactory(
int host_id,
network::mojom::URLLoaderFactoryPtr url_loader_factory) {
// Should never be called.
DCHECK(false);
}
} // namespace content
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