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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::u16string text;
CompositionClauses clauses;
TextRange selection;
};
// inline std::basic_ostream<char16_t>& operator<<(
// std::basic_ostream<char16_t>& stream,
// const CompositionText& composition_text) {
// stream << u"text: " << composition_text.text << u"\n" << u"clauses:\n";
// for (int i = 0; i < static_cast<int>(composition_text.clauses.size()); i++) {
// const auto& clause = composition_text.clauses[i];
// stream << u"\t" << i << u". start:" << clause.start << u" end:"
// << clause.end;
// if (clause.target) {
// stream << u" target";
// }
// stream << u"\n";
// }
// stream << u"selection: position:" << composition_text.selection.position
// << u" 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::u16string_view>* TextEvent() = 0;
};
struct IInputMethodManager : virtual INativeResource {
virtual std::unique_ptr<IInputMethodContext> GetContext(
INativeWindow* window) = 0;
};
} // namespace cru::platform::native
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