Move auth-error reporting code out of SyncGlobalError and into SigninGlobalError

chrome/browser/signin/signin_global_error.h

+// Copyright (c) 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.
+
+#ifndef CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_
+#define CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_
+
+#include <set>
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/ui/global_error/global_error.h"
+#include "google_apis/gaia/google_service_auth_error.h"
+
+class Profile;
+
+// Shows auth errors on the wrench menu using a bubble view and a
+// menu item. Services that wish to expose auth errors to the user should
+// register an AuthStatusProvider to report their current authentication state,
+// and should invoke AuthStatusChanged() when their authentication state may
+// have changed.
+class SigninGlobalError : public GlobalError {
+ public:
+  class AuthStatusProvider {
+   public:
+    AuthStatusProvider();
+    virtual ~AuthStatusProvider();
+
+    // API invoked by SigninGlobalError to get the current auth status of
+    // the various signed in services.
+    virtual GoogleServiceAuthError GetAuthStatus() const = 0;
+  };
+
+  explicit SigninGlobalError(Profile* profile);
+  virtual ~SigninGlobalError();
+
+  // Adds a provider which the SigninGlobalError object will start querying for
+  // auth status.
+  void AddProvider(const AuthStatusProvider* provider);
+
+  // Removes a provider previously added by SigninGlobalError (generally only
+  // called in preparation for shutdown).
+  void RemoveProvider(const AuthStatusProvider* provider);
+
+  // Invoked when the auth status of an AuthStatusProvider has changed.
+  void AuthStatusChanged();
+
+  // GlobalError implementation.
+  virtual bool HasBadge() OVERRIDE;
+  virtual bool HasMenuItem() OVERRIDE;
+  virtual int MenuItemCommandID() OVERRIDE;
+  virtual string16 MenuItemLabel() OVERRIDE;
+  virtual void ExecuteMenuItem(Browser* browser) OVERRIDE;
+  virtual bool HasBubbleView() OVERRIDE;
+  virtual string16 GetBubbleViewTitle() OVERRIDE;
+  virtual string16 GetBubbleViewMessage() OVERRIDE;
+  virtual string16 GetBubbleViewAcceptButtonLabel() OVERRIDE;
+  virtual string16 GetBubbleViewCancelButtonLabel() OVERRIDE;
+  virtual void OnBubbleViewDidClose(Browser* browser) OVERRIDE;
+  virtual void BubbleViewAcceptButtonPressed(Browser* browser) OVERRIDE;
+  virtual void BubbleViewCancelButtonPressed(Browser* browser) OVERRIDE;
+
+ private:
+  std::set<const AuthStatusProvider*> provider_set_;
+
+  // The auth error detected the last time AuthStatusChanged() was invoked (or
+  // NONE if AuthStatusChanged() has never been invoked).
+  GoogleServiceAuthError auth_error_;
+
+  // The Profile this object belongs to.
+  Profile* profile_;
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_