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// Copyright 2013 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 "ios/web/public/browser_state.h"
#include "base/location.h"
#include "base/memory/ref_counted.h"
#include "ios/web/public/certificate_policy_cache.h"
#include "ios/web/public/web_thread.h"
#include "ios/web/webui/url_data_manager_ios_backend.h"
namespace web {
namespace {
// Private key used for safe conversion of base::SupportsUserData to
// web::BrowserState in web::BrowserState::FromSupportsUserData.
const char kBrowserStateIdentifierKey[] = "BrowserStateIdentifierKey";
// Data key names.
const char kCertificatePolicyCacheKeyName[] = "cert_policy_cache";
// Wraps a CertificatePolicyCache as a SupportsUserData::Data; this is necessary
// since reference counted objects can't be user data.
struct CertificatePolicyCacheHandle : public base::SupportsUserData::Data {
explicit CertificatePolicyCacheHandle(CertificatePolicyCache* cache)
: policy_cache(cache) {}
scoped_refptr<CertificatePolicyCache> policy_cache;
};
}
// static
scoped_refptr<CertificatePolicyCache> BrowserState::GetCertificatePolicyCache(
BrowserState* browser_state) {
DCHECK_CURRENTLY_ON_WEB_THREAD(WebThread::UI);
if (!browser_state->GetUserData(kCertificatePolicyCacheKeyName)) {
CertificatePolicyCacheHandle* cert_cache_service_handle =
new CertificatePolicyCacheHandle(new CertificatePolicyCache());
browser_state->SetUserData(kCertificatePolicyCacheKeyName,
cert_cache_service_handle);
}
CertificatePolicyCacheHandle* handle =
static_cast<CertificatePolicyCacheHandle*>(
browser_state->GetUserData(kCertificatePolicyCacheKeyName));
return handle->policy_cache;
}
BrowserState::BrowserState() : url_data_manager_ios_backend_(nullptr) {
// (Refcounted)?BrowserStateKeyedServiceFactories needs to be able to convert
// a base::SupportsUserData to a BrowserState. Moreover, since the factories
// may be passed a content::BrowserContext instead of a BrowserState, attach
// an empty object to this via a private key.
SetUserData(kBrowserStateIdentifierKey, new SupportsUserData::Data);
}
BrowserState::~BrowserState() {
// Delete the URLDataManagerIOSBackend instance on the IO thread if it has
// been created. Note that while this check can theoretically race with a
// call to |GetURLDataManagerIOSBackendOnIOThread()|, if any clients of this
// BrowserState are still accessing it on the IO thread at this point,
// they're going to have a bad time anyway.
if (url_data_manager_ios_backend_) {
bool posted = web::WebThread::DeleteSoon(web::WebThread::IO, FROM_HERE,
url_data_manager_ios_backend_);
if (!posted)
delete url_data_manager_ios_backend_;
}
}
URLDataManagerIOSBackend*
BrowserState::GetURLDataManagerIOSBackendOnIOThread() {
DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::IO);
if (!url_data_manager_ios_backend_)
url_data_manager_ios_backend_ = new URLDataManagerIOSBackend();
return url_data_manager_ios_backend_;
}
// static
BrowserState* BrowserState::FromSupportsUserData(
base::SupportsUserData* supports_user_data) {
if (!supports_user_data ||
!supports_user_data->GetUserData(kBrowserStateIdentifierKey)) {
return nullptr;
}
return static_cast<BrowserState*>(supports_user_data);
}
} // namespace web
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