chrome/browser/ui/global_error/global_error_service.h

   1 // Copyright (c) 2012 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_GLOBAL_ERROR_GLOBAL_ERROR_SERVICE_H_
   6 #define CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_SERVICE_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "components/keyed_service/core/keyed_service.h"
  12
  13 class GlobalError;
  14 class Profile;
  15
  16 // This service manages a list of errors that are meant to be shown globally.
  17 // If an error applies to an entire profile and not just to a tab then the
  18 // error should be shown using this service. Examples of global errors are:
  19 //   - the previous session crashed for a given profile.
  20 //   - a sync error occurred
  21 class GlobalErrorService : public KeyedService {
  22  public:
  23   // Type used to represent the list of currently active errors.
  24   typedef std::vector<GlobalError*> GlobalErrorList;
  25
  26   // Constructs a GlobalErrorService object for the given profile. The profile
  27   // maybe NULL for tests.
  28   explicit GlobalErrorService(Profile* profile);
  29   ~GlobalErrorService() override;
  30
  31   // Adds the given error to the list of global errors and displays it on
  32   // browswer windows. If no browser windows are open  then the error is
  33   // displayed once a browser window is opened. This class takes ownership of
  34   // the error.
  35   void AddGlobalError(GlobalError* error);
  36
  37   // Hides the given error and removes it from the list of global errors. Caller
  38   // then takes ownership of the error and is responsible for deleting it.
  39   void RemoveGlobalError(GlobalError* error);
  40
  41   // Gets the error with the given command ID or NULL if no such error exists.
  42   // This class maintains ownership of the returned error.
  43   GlobalError* GetGlobalErrorByMenuItemCommandID(int command_id) const;
  44
  45   // Gets the highest severity error that has a wrench menu item.
  46   // Returns NULL if no such error exists.
  47   GlobalError* GetHighestSeverityGlobalErrorWithWrenchMenuItem() const;
  48
  49   // Gets the first error that has a bubble view which hasn't been shown yet.
  50   // Returns NULL if no such error exists.
  51   GlobalError* GetFirstGlobalErrorWithBubbleView() const;
  52
  53   // Gets all errors.
  54   const GlobalErrorList& errors() { return errors_; }
  55
  56   // Post a notification that a global error has changed and that the error UI
  57   // should update it self. Pass NULL for the given error to mean all error UIs
  58   // should update.
  59   void NotifyErrorsChanged(GlobalError* error);
  60
  61  private:
  62   GlobalErrorList errors_;
  63   Profile* profile_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(GlobalErrorService);
  66 };
  67
  68 #endif  // CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_SERVICE_H_