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author | Petr Mrázek <peterix@gmail.com> | 2016-04-10 04:29:29 +0200 |
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committer | Petr Mrázek <peterix@gmail.com> | 2016-04-30 23:59:23 +0200 |
commit | 47e37635f50c09b4f9a9ee7699e3120bab3e4088 (patch) | |
tree | 061c2f675fb7e244ebe4b54ef206bfbd615c91f8 /libraries/logic/DefaultVariable.h | |
parent | fcd4a482f759cd58ee319a51082d0146b7e426e2 (diff) | |
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NOISSUE split GUI stuff from logic library
Diffstat (limited to 'libraries/logic/DefaultVariable.h')
-rw-r--r-- | libraries/logic/DefaultVariable.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libraries/logic/DefaultVariable.h b/libraries/logic/DefaultVariable.h new file mode 100644 index 00000000..38d7ecc2 --- /dev/null +++ b/libraries/logic/DefaultVariable.h @@ -0,0 +1,35 @@ +#pragma once + +template <typename T> +class DefaultVariable +{ +public: + DefaultVariable(const T & value) + { + defaultValue = value; + } + DefaultVariable<T> & operator =(const T & value) + { + currentValue = value; + is_default = currentValue == defaultValue; + is_explicit = true; + return *this; + } + operator const T &() const + { + return is_default ? defaultValue : currentValue; + } + bool isDefault() const + { + return is_default; + } + bool isExplicit() const + { + return is_explicit; + } +private: + T currentValue; + T defaultValue; + bool is_default = true; + bool is_explicit = false; +}; |