src/apps/bootmanager/WizardController.h

   1 /*
   2  * Copyright 2008-2010, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Michael Pfeiffer <laplace@users.sourceforge.net>
   7  */
   8 #ifndef WIZARD_CONTROLLER_H
   9 #define WIZARD_CONTROLLER_H
  10
  11
  12 #include <SupportDefs.h>
  13
  14
  15 class WizardView;
  16 class WizardPageView;
  17
  18
  19 class WizardController {
  20 public:
  21                                                                 WizardController();
  22         virtual                                         ~WizardController();
  23
  24         virtual void                            Initialize(WizardView* wizard);
  25         virtual void                            Next(WizardView* wizard);
  26         virtual void                            Previous(WizardView* wizard);
  27
  28 protected:
  29         virtual int32                           InitialState() = 0;
  30         virtual int32                           NextState(int32 state) = 0;
  31         virtual WizardPageView*         CreatePage(int32 state, WizardView* wizard) = 0;
  32
  33                         int32                           CurrentState() const;
  34
  35 private:
  36         class StateStack {
  37         public:
  38                 StateStack(int32 state, StateStack* next)
  39                         :
  40                         fState(state),
  41                         fNext(next)
  42                 {
  43                 }
  44
  45                 int32 State()
  46                 {
  47                         return fState;
  48                 }
  49
  50                 StateStack* Next()
  51                 {
  52                         return fNext;
  53                 }
  54
  55                 void MakeEmpty();
  56
  57         private:
  58                 int32 fState;
  59                 StateStack* fNext;
  60         };
  61
  62                         void                            _PushState(int32 state);
  63                         void                            _ShowPage(WizardView* wizard);
  64
  65 private:
  66                         StateStack*                     fStack;
  67 };
  68
  69
  70 #endif  // WIZARD_CONTROLLER_H