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// Copyright (c) 2012 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 "chrome/browser/policy/asynchronous_policy_provider.h"
#include "base/bind.h"
#include "chrome/browser/policy/asynchronous_policy_loader.h"
#include "chrome/browser/policy/policy_map.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace policy {
AsynchronousPolicyProvider::AsynchronousPolicyProvider(
const PolicyDefinitionList* policy_list,
scoped_refptr<AsynchronousPolicyLoader> loader)
: ConfigurationPolicyProvider(policy_list),
loader_(loader),
pending_refreshes_(0),
ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
loader_->Init(
base::Bind(&AsynchronousPolicyProvider::OnLoaderReloaded,
base::Unretained(this)));
}
AsynchronousPolicyProvider::~AsynchronousPolicyProvider() {
DCHECK(CalledOnValidThread());
// |loader_| won't invoke its callback anymore after Stop(), therefore
// Unretained(this) is safe in the ctor.
loader_->Stop();
}
bool AsynchronousPolicyProvider::ProvideInternal(PolicyMap* map) {
DCHECK(CalledOnValidThread());
map->CopyFrom(loader_->policy());
return true;
}
void AsynchronousPolicyProvider::RefreshPolicies() {
DCHECK(CalledOnValidThread());
pending_refreshes_++;
BrowserThread::PostTaskAndReply(
BrowserThread::FILE, FROM_HERE,
base::Bind(&AsynchronousPolicyProvider::PostReloadOnFileThread,
loader_),
base::Bind(&AsynchronousPolicyProvider::OnReloadPosted,
weak_ptr_factory_.GetWeakPtr()));
}
// static
void AsynchronousPolicyProvider::PostReloadOnFileThread(
AsynchronousPolicyLoader* loader) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&AsynchronousPolicyLoader::Reload, loader, true));
}
void AsynchronousPolicyProvider::OnReloadPosted() {
DCHECK(CalledOnValidThread());
pending_refreshes_--;
}
void AsynchronousPolicyProvider::OnLoaderReloaded() {
DCHECK(CalledOnValidThread());
if (pending_refreshes_ == 0)
NotifyPolicyUpdated();
}
} // namespace policy
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