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			122 lines
		
	
	
	
		
			3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			122 lines
		
	
	
	
		
			3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #pragma once
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| 
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| #include <memory>
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| #include <string>
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| 
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| #include <boost/json/object.hpp>
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| #include <boost/signals2/signal.hpp>
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| 
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| namespace scwx
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| {
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| namespace qt
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| {
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| namespace settings
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| {
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| 
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| /**
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|  * @brief Settings Variable base class
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|  */
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| class SettingsVariableBase
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| {
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| protected:
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|    explicit SettingsVariableBase(const std::string& name);
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|    virtual ~SettingsVariableBase();
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| 
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| public:
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|    SettingsVariableBase(const SettingsVariableBase&)            = delete;
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|    SettingsVariableBase& operator=(const SettingsVariableBase&) = delete;
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| 
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|    SettingsVariableBase(SettingsVariableBase&&) noexcept;
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|    SettingsVariableBase& operator=(SettingsVariableBase&&) noexcept;
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| 
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|    std::string name() const;
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| 
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|    /**
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|     * Gets the signal invoked when the settings variable is changed.
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|     *
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|     * @return Changed signal
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|     */
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|    boost::signals2::signal<void()>& changed_signal();
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| 
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|    /**
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|     * Gets the signal invoked when the settings variable is staged.
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|     *
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|     * @return Staged signal
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|     */
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|    boost::signals2::signal<void()>& staged_signal();
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| 
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|    /**
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|     * Gets whether or not the settings variable is currently set to its default
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|     * value.
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|     *
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|     * @return true if the settings variable is currently set to its default
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|     * value, otherwise false.
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|     */
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|    virtual bool IsDefault() const = 0;
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| 
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|    /**
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|     * Gets whether or not the settings variable currently has its staged value
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|     * set to default.
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|     *
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|     * @return true if the settings variable currently has its staged value set
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|     * to default, otherwise false.
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|     */
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|    virtual bool IsDefaultStaged() const = 0;
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| 
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|    /**
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|     * Sets the current value of the settings variable to default.
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|     */
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|    virtual void SetValueToDefault() = 0;
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| 
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|    /**
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|     * Stages the default value of the settings variable.
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|     */
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|    virtual void StageDefault() = 0;
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| 
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|    /**
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|     * Sets the current value of the settings variable to the staged value.
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|     *
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|     * @return true if the staged value was committed, false if no staged value
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|     * is present.
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|     */
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|    virtual bool Commit() = 0;
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| 
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|    /**
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|     * Clears the staged value of the settings variable.
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|     */
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|    virtual void Reset() = 0;
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| 
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|    /**
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|     * Reads the value from the JSON object. If the read value is out of range,
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|     * the value is set to the minimum or maximum. If the read value fails
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|     * validation, the value is set to default.
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|     *
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|     * @param json JSON object to read
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|     *
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|     * @return true if the read value is valid, false if the value was modified.
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|     */
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|    virtual bool ReadValue(const boost::json::object& json) = 0;
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| 
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|    /**
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|     * Writes the current value to the JSON object.
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|     *
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|     * @param json JSON object to write
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|     */
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|    virtual void WriteValue(boost::json::object& json) const = 0;
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| 
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| protected:
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|    friend bool  operator==(const SettingsVariableBase& lhs,
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|                           const SettingsVariableBase& rhs);
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|    virtual bool Equals(const SettingsVariableBase& o) const;
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| 
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| private:
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|    class Impl;
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|    std::unique_ptr<Impl> p;
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| };
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| 
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| bool operator==(const SettingsVariableBase& lhs,
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|                 const SettingsVariableBase& rhs);
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| 
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| } // namespace settings
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| } // namespace qt
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| } // namespace scwx
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