ui_binds.hpp

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#pragma once
#include <RmlUi/Core/DataModelHandle.h>
#include <RmlUi/Core/Variant.h>
#include <string>
#include <string_view>
#include <toast/export.hpp>
#include <unordered_map>
#include <unordered_set>
 
namespace Rml {
class Context;
}
 
namespace toast {
class Node;
}
 
namespace ui {
 
struct DocumentScan;

class TOAST_API UIBindStore {
public:
  UIBindStore();
  ~UIBindStore();
 
  void reconcile(const DocumentScan& scan);
 
  [[nodiscard]]
  auto has(std::string_view name) const -> bool;
 
  [[nodiscard]]
  auto get(std::string_view name) const -> Rml::Variant;
 
  void set(std::string_view name, Rml::Variant value);
 
private:
  std::unordered_map<std::string, Rml::Variant> m_values;
};
 
class UIBinds {
public:
  UIBinds(Rml::Context* context, toast::Node* owner, const DocumentScan& scan, UIBindStore& store);
  ~UIBinds();
 
  UIBinds(const UIBinds&) = delete;
  auto operator=(const UIBinds&) -> UIBinds& = delete;
  UIBinds(UIBinds&&) = delete;
  auto operator=(UIBinds&&) -> UIBinds& = delete;
 
  [[nodiscard]]
  auto handle() -> Rml::DataModelHandle {
    return m_handle;
  }

  [[nodiscard]]
  auto has(std::string_view name) const -> bool;

  [[nodiscard]]
  auto get(std::string_view name) const -> Rml::Variant;

  void set(std::string_view name, Rml::Variant value);
 
  void flushDirty();
  static void flushAllDirty();

  [[nodiscard]]
  static auto forNode(const toast::Node* node) -> UIBinds*;
 
  static constexpr const char* k_model_name = "binds";
 
private:
  Rml::Context* m_context = nullptr;
  toast::Node* m_owner = nullptr;
  Rml::DataModelHandle m_handle;
  UIBindStore& m_store;
  std::unordered_set<std::string> m_dirty_names;
 
  static inline std::unordered_map<const toast::Node*, UIBinds*> s_by_node;
};
 
}