implement sign in dialog

chrome/browser/extensions/api/identity/identity_api.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/ui/webui/signin/login_ui_service.h"
 #include "chrome/common/net/gaia/oauth2_mint_token_flow.h"
 
 class GoogleServiceAuthError;
 
 namespace extensions {
 
 class GetAuthTokenFunction : public AsyncExtensionFunction,
                              public OAuth2MintTokenFlow::Delegate,
-                             public ExtensionInstallPrompt::Delegate {
+                             public ExtensionInstallPrompt::Delegate,
+                             public LoginUIService::Observer {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.identity.getAuthToken");
 
   GetAuthTokenFunction();
 
  private:
   virtual ~GetAuthTokenFunction();
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 
   // OAuth2MintTokenFlow::Delegate implementation:
   virtual void OnMintTokenSuccess(const std::string& access_token) OVERRIDE;
-  virtual void OnMintTokenFailure(const GoogleServiceAuthError& error) OVERRIDE;
+  virtual void OnMintTokenFailure(
+      const GoogleServiceAuthError& error) OVERRIDE;
   virtual void OnIssueAdviceSuccess(
       const IssueAdviceInfo& issue_advice) OVERRIDE;
 
+  // LoginUIService::Observer implementation.
+  virtual void OnLoginUIShown(LoginUIService::LoginUI* ui) OVERRIDE;

[Evan Stade, 2012/07/13 08:57:33]

I can't find this interface in code search, was it added recently? I'd say that
neither of them should be pure virtual. You shouldn't have to define an empty
function here. However if you don't want to change it away from pure virtual
then you can just {} inline here instead of in the cc.

[Munjal (Google), 2012/07/16 20:13:30]

Yeah, that change was landed recently. But now it has been a few days, so you
will probably see in code search.

I made it empty inline for now. I will do another patch since atwilson@ might
want to weigh in on pure virtual versus not.

+  virtual void OnLoginUIClosed(LoginUIService::LoginUI* ui) OVERRIDE;
+
   // ExtensionInstallPrompt::Delegate implementation:
   virtual void InstallUIProceed() OVERRIDE;
   virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
 
+  // Shows the login UI in a browser popup.
+  bool StartLogin();
   // Starts a MintTokenFlow with the given mode; Returns success.
   bool StartFlow(OAuth2MintTokenFlow::Mode mode);
 
+  // Checks if there is a master login token to mint token for the extension.

[Mihai Parparita -not on Chrome, 2012/07/12 23:31:32]

"to mint tokens" sounds more correct.

[Munjal (Google), 2012/07/16 20:13:30]

Done.

+  bool HasLoginToken() const;
+
+  // Gets the token mint flow mode based on a command-line flag.
+  OAuth2MintTokenFlow::Mode GetTokenFlowMode() const;
+
   bool interactive_;
   scoped_ptr<OAuth2MintTokenFlow> flow_;
 
   // When launched in interactive mode, and if there is no existing grant,
   // a permissions prompt will be popped up to the user.
   scoped_ptr<ExtensionInstallPrompt> install_ui_;
 };
 
 class LaunchWebAuthFlowFunction : public AsyncExtensionFunction,
                                   public WebAuthFlow::Delegate {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.identity.launchWebAuthFlow");
 
   LaunchWebAuthFlowFunction();
 
  private:
   virtual ~LaunchWebAuthFlowFunction();
   virtual bool RunImpl() OVERRIDE;
 
   // WebAuthFlow::Delegate implementation.
   virtual void OnAuthFlowSuccess(const std::string& redirect_url) OVERRIDE;
   virtual void OnAuthFlowFailure() OVERRIDE;
 
   scoped_ptr<WebAuthFlow> auth_flow_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_