2 files changed, 14 insertions, 23 deletions
diff --git a/include/cru/platform/graph_base.hpp b/include/cru/platform/graph_base.hpp
index 5840ce18..98ac3993 100644
--- a/include/cru/platform/graph_base.hpp
+++ b/include/cru/platform/graph_base.hpp
@@ -1,5 +1,5 @@
 #pragma once
-#include "cru/common/pre_config.hpp"
+#include "cru/common/base.hpp"
 
 #include <cstdint>
 #include <optional>
@@ -214,30 +214,18 @@ constexpr bool operator!=(const Ellipse& left, const Ellipse& right) {
 }
 
 struct TextRange final {
-  constexpr static std::optional<TextRange> FromTwoSides(unsigned first,
-                                                         unsigned second) {
-    if (first > second)
-      return std::make_optional<TextRange>(second, first - second);
-    if (first < second)
-      return std::make_optional<TextRange>(first, second - first);
-    return std::nullopt;
-  }
-
-  constexpr static std::pair<unsigned, unsigned> ToTwoSides(
-      std::optional<TextRange> text_range, unsigned default_position = 0) {
-    if (text_range.has_value())
-      return std::make_pair(
-          text_range.value().position,
-          text_range.value().position + text_range.value().count);
-    return std::make_pair(default_position, default_position);
+  constexpr static TextRange FromTwoSides(gsl::index start, gsl::index end) {
+    return TextRange(start, end - start);
   }
 
   constexpr TextRange() = default;
-  constexpr TextRange(const unsigned position, const unsigned count)
+  constexpr TextRange(const gsl::index position, const gsl::index count)
       : position(position), count(count) {}
 
-  unsigned position = 0;
-  unsigned count = 0;
+  gsl::index GetEnd() const { return position + count; }
+
+  gsl::index position = 0;
+  gsl::index count = 0;
 };
 
 struct Color {
diff --git a/include/cru/platform/native/input_method.hpp b/include/cru/platform/native/input_method.hpp
index 00017502..56e2fb27 100644
--- a/include/cru/platform/native/input_method.hpp
+++ b/include/cru/platform/native/input_method.hpp
@@ -7,15 +7,18 @@
 #include <vector>
 
 namespace cru::platform::native {
-struct CompositionUnderline {
+struct CompositionClause {
   int start;
   int end;
+  bool target;
 };
 
+using CompositionClauses = std::vector<CompositionClause>;
+
 struct CompositionText {
   std::string text;
-  std::vector<CompositionUnderline> underlines;
-  int caret_position;
+  CompositionClauses clauses;
+  TextRange selection;
 };
 
 struct IInputMethodContext : virtual INativeResource {