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#pragma once
#include "../Resource.hpp"
#include "Base.hpp"
#include "cru/common/Event.hpp"
#include <iostream>
#include <memory>
#include <vector>
namespace cru::platform::native {
struct CompositionClause {
int start;
int end;
bool target;
};
using CompositionClauses = std::vector<CompositionClause>;
struct CompositionText {
std::string text;
CompositionClauses clauses;
TextRange selection;
};
inline std::ostream& operator<<(std::ostream& stream,
const CompositionText& composition_text) {
stream << "text: " << composition_text.text << "\n"
<< "clauses:\n";
for (int i = 0; i < static_cast<int>(composition_text.clauses.size()); i++) {
const auto& clause = composition_text.clauses[i];
stream << "\t" << i << ". start:" << clause.start << " end:" << clause.end;
if (clause.target) {
stream << " target";
}
stream << "\n";
}
stream << "selection: position:" << composition_text.selection.position
<< " count:" << composition_text.selection.count;
return stream;
}
struct IInputMethodContext : virtual INativeResource {
// Return true if you should draw composition text manually. Return false if
// system will take care of that for you.
virtual bool ShouldManuallyDrawCompositionText() = 0;
virtual void EnableIME() = 0;
virtual void DisableIME() = 0;
virtual void CompleteComposition() = 0;
virtual void CancelComposition() = 0;
virtual CompositionText GetCompositionText() = 0;
// Set the candidate window lefttop. Use this method to prepare typing.
virtual void SetCandidateWindowPosition(const Point& point) = 0;
// Triggered when user starts composition.
virtual IEvent<std::nullptr_t>* CompositionStartEvent() = 0;
// Triggered when user stops composition.
virtual IEvent<std::nullptr_t>* CompositionEndEvent() = 0;
// Triggered every time composition text changes.
virtual IEvent<std::nullptr_t>* CompositionEvent() = 0;
virtual IEvent<std::string_view>* TextEvent() = 0;
};
struct IInputMethodManager : virtual INativeResource {
virtual std::unique_ptr<IInputMethodContext> GetContext(
INativeWindow* window) = 0;
};
} // namespace cru::platform::native
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