chrome/browser/ui/webui/copresence_ui_handler.h

   1 // Copyright 2014 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 CHROME_BROWSER_UI_WEBUI_COPRESENCE_UI_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_COPRESENCE_UI_HANDLER_H_
   7
   8 #include "base/macros.h"
   9 #include "components/copresence/public/copresence_observer.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11
  12 namespace base {
  13 class ListValue;
  14 }
  15
  16 namespace content {
  17 class WebUI;
  18 }
  19
  20 namespace copresence {
  21 class CopresenceState;
  22 }
  23
  24 // UI Handler for the copresence page.
  25 // TODO(crbug.com/444263): Write tests.
  26 class CopresenceUIHandler final : public content::WebUIMessageHandler,
  27                                   public copresence::CopresenceObserver {
  28  public:
  29   explicit CopresenceUIHandler(content::WebUI* web_ui);
  30   ~CopresenceUIHandler() override;
  31
  32  private:
  33   // WebUIMessageHandler override.
  34   void RegisterMessages() override;
  35
  36   // CopresenceObserver overrides.
  37   void DirectivesUpdated() override;
  38   void TokenTransmitted(const copresence::TransmittedToken& token) override;
  39   void TokenReceived(const copresence::ReceivedToken& token) override;
  40
  41   // Handler to populate the page with its initial state.
  42   void HandlePopulateState(const base::ListValue* args);
  43
  44   // Handler for the clear state button.
  45   void HandleClearState(const base::ListValue* args);
  46
  47   copresence::CopresenceState* state_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(CopresenceUIHandler);
  50 };
  51
  52 #endif  // CHROME_BROWSER_UI_WEBUI_COPRESENCE_UI_HANDLER_H_