fac222a427
* non builtins options require declaration using the decl command * At the moment, only int and string options are supported, however the goal of this change is to provide a consistent way to support more complex options, namely lists and booleans
94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
#ifndef option_manager_hh_INCLUDED
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#define option_manager_hh_INCLUDED
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#include "utils.hh"
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#include "exception.hh"
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#include "completion.hh"
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#include <unordered_map>
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namespace Kakoune
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{
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struct option_not_found : public runtime_error
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{
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option_not_found(const String& name)
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: runtime_error("option not found: " + name) {}
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};
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class OptionManager;
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class Option
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{
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public:
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Option(OptionManager& manager, String name);
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virtual ~Option() {}
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template<typename T> const T& get() const;
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template<typename T> void set(const T& val);
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virtual String get_as_string() const = 0;
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virtual void set_from_string(const String& str) = 0;
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String name() const { return m_name; }
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OptionManager& manager() const { return m_manager; }
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virtual Option* clone(OptionManager& manager) const = 0;
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protected:
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OptionManager& m_manager;
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String m_name;
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};
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class OptionManagerWatcher
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{
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public:
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virtual ~OptionManagerWatcher() {}
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virtual void on_option_changed(const Option& option) = 0;
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};
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class OptionManager : private OptionManagerWatcher
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{
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public:
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OptionManager(OptionManager& parent);
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~OptionManager();
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const Option& operator[] (const String& name) const;
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Option& get_local_option(const String& name);
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CandidateList complete_option_name(const String& prefix,
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ByteCount cursor_pos);
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using OptionList = std::vector<const Option*>;
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OptionList flatten_options() const;
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void register_watcher(OptionManagerWatcher& watcher);
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void unregister_watcher(OptionManagerWatcher& watcher);
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void on_option_changed(const Option& option) override;
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private:
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OptionManager()
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: m_parent(nullptr) {}
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// the only one allowed to construct a root option manager
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friend class GlobalOptions;
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std::vector<std::unique_ptr<Option>> m_options;
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OptionManager* m_parent;
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std::vector<OptionManagerWatcher*> m_watchers;
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};
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class GlobalOptions : public OptionManager,
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public Singleton<GlobalOptions>
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{
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public:
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GlobalOptions();
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template<typename T>
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Option& declare_option(const String& name, const T& inital_value);
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};
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}
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#endif // option_manager_hh_INCLUDED
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