src/servers/launch/Conditions.h

   1 /*
   2  * Copyright 2015, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef CONDITIONS_H
   6 #define CONDITIONS_H
   7
   8
   9 #include <String.h>
  10
  11
  12 class BMessage;
  13
  14
  15 class ConditionContext {
  16 public:
  17         virtual bool                            IsSafeMode() const = 0;
  18         virtual bool                            BootVolumeIsReadOnly() const = 0;
  19 };
  20
  21
  22 class Condition {
  23 public:
  24                                                                 Condition();
  25         virtual                                         ~Condition();
  26
  27         virtual bool                            Test(ConditionContext& context) const = 0;
  28
  29         /*!     Determines whether or not the result of this condition is fixed,
  30                 and will not change anymore.
  31         */
  32         virtual bool                            IsConstant(ConditionContext& context) const;
  33
  34         virtual BString                         ToString() const = 0;
  35 };
  36
  37
  38 class Conditions {
  39 public:
  40         static  Condition*                      FromMessage(const BMessage& message);
  41         static  Condition*                      AddNotSafeMode(Condition* condition);
  42 };
  43
  44
  45 #endif // CONDITIONS_H