components/proximity_auth/webui/proximity_auth_webui_handler.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_
   6 #define COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "components/proximity_auth/cryptauth/cryptauth_client.h"
  10 #include "components/proximity_auth/logging/log_buffer.h"
  11 #include "components/proximity_auth/webui/proximity_auth_ui_delegate.h"
  12 #include "content/public/browser/web_ui_message_handler.h"
  13
  14 namespace base {
  15 class ListValue;
  16 }
  17
  18 namespace proximity_auth {
  19
  20 class ProximityAuthUIDelegate;
  21
  22 // Handles messages from the chrome://proximity-auth page.
  23 class ProximityAuthWebUIHandler : public content::WebUIMessageHandler,
  24                                   public LogBuffer::Observer {
  25  public:
  26   // |delegate| is not owned and must outlive this instance.
  27   explicit ProximityAuthWebUIHandler(ProximityAuthUIDelegate* delegate);
  28   ~ProximityAuthWebUIHandler() override;
  29
  30   // content::WebUIMessageHandler:
  31   void RegisterMessages() override;
  32
  33  private:
  34   // LogBuffer::Observer:
  35   void OnLogMessageAdded(const LogBuffer::LogMessage& log_message) override;
  36   void OnLogBufferCleared() override;
  37
  38   // Message handler callbacks.
  39   void GetLogMessages(const base::ListValue* args);
  40   void ClearLogBuffer(const base::ListValue* args);
  41   void FindEligibleUnlockDevices(const base::ListValue* args);
  42
  43   // Called when a CryptAuth request fails.
  44   void OnCryptAuthClientError(const std::string& error_message);
  45
  46   // Called when the findEligibleUnlockDevices request succeeds.
  47   void OnFoundEligibleUnlockDevices(
  48       const cryptauth::FindEligibleUnlockDevicesResponse& response);
  49
  50   // The delegate used to fetch dependencies. Must outlive this instance.
  51   ProximityAuthUIDelegate* delegate_;
  52
  53   // Creates CryptAuth client instances to make API calls.
  54   scoped_ptr<CryptAuthClientFactory> cryptauth_client_factory_;
  55
  56   // We only support one concurrent API call.
  57   scoped_ptr<CryptAuthClient> cryptauth_client_;
  58
  59   base::WeakPtrFactory<ProximityAuthWebUIHandler> weak_ptr_factory_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(ProximityAuthWebUIHandler);
  62 };
  63
  64 }  // namespace proximity_auth
  65
  66 #endif  // COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_