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// Copyright 2014 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.
#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_MERGE_SESSION_THROTTLE_H_
#define CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_MERGE_SESSION_THROTTLE_H_
#include <set>
#include "base/atomic_ref_count.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/resource_throttle.h"
#include "content/public/common/resource_type.h"
#include "net/base/completion_callback.h"
class Profile;
namespace net {
class URLRequest;
}
namespace chromeos {
class OAuth2LoginManager;
}
// Used to show an interstitial page while merge session process (cookie
// reconstruction from OAuth2 refresh token in ChromeOS login) is still in
// progress while we are attempting to load a google property.
class MergeSessionThrottle
: public content::ResourceThrottle,
public base::SupportsWeakPtr<MergeSessionThrottle> {
public:
// Passed a boolean indicating whether or not it is OK to proceed with the
// page load.
typedef base::Closure CompletionCallback;
explicit MergeSessionThrottle(net::URLRequest* request,
content::ResourceType resource_type);
virtual ~MergeSessionThrottle();
// content::ResourceThrottle implementation:
virtual void WillStartRequest(bool* defer) OVERRIDE;
virtual const char* GetNameForLogging() const OVERRIDE;
// Checks if session is already merged.
static bool AreAllSessionMergedAlready();
private:
// MergeSessionLoadPage callback.
void OnBlockingPageComplete();
// Erase the state associated with a deferred load request.
void ClearRequestInfo();
bool IsRemote(const GURL& url) const;
// True if we |url| loading should be delayed. The function
// is safe to be called on any thread.
bool ShouldDelayUrl(const GURL& url) const;
// Adds/removes |profile| to/from the blocking profiles set.
static void BlockProfile(Profile* profile);
static void UnblockProfile(Profile* profile);
// Helper method that checks if we should delay reasource loading based on
// the state of the Profile that's derived from |render_process_id| and
// |render_view_id|.
static bool ShouldDelayRequest(int render_process_id,
int render_view_id);
// Tests merge session status and if needed generates request
// waiter (for content::RESOURCE_TYPE_XHR content) or shows interstitial page
// (for content::RESOURCE_TYPE_MAIN_FRAME).
// The function must be called from UI thread.
static void DeleayResourceLoadingOnUIThread(
content::ResourceType resource_type,
int render_process_id,
int render_view_id,
const GURL& url,
const MergeSessionThrottle::CompletionCallback& callback);
net::URLRequest* request_;
content::ResourceType resource_type_;
// Global counter that keeps the track of session merge status for all
// encountered profiles. This is used to determine if a throttle should
// even be even added to new requests. Value of 0 (initial) means that we
// probably have some profiles to restore, while 1 means that all known
// profiles are restored.
static base::AtomicRefCount all_profiles_restored_;
DISALLOW_COPY_AND_ASSIGN(MergeSessionThrottle);
};
#endif // CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_MERGE_SESSION_THROTTLE_H_
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