4 files changed, 14 insertions, 16 deletions
diff --git a/src/ui/CMakeLists.txt b/src/ui/CMakeLists.txt
index e61ed7de..4964a1ae 100644
--- a/src/ui/CMakeLists.txt
+++ b/src/ui/CMakeLists.txt
@@ -37,6 +37,7 @@ add_library(cru_ui STATIC
 	style/Condition.cpp
 	style/Styler.cpp
 	style/StyleRule.cpp
+	style/StyleRuleSet.cpp
 )
 target_sources(cru_ui PUBLIC
 	${CRU_UI_INCLUDE_DIR}/Base.hpp
@@ -79,5 +80,6 @@ target_sources(cru_ui PUBLIC
 	${CRU_UI_INCLUDE_DIR}/style/Condition.hpp
 	${CRU_UI_INCLUDE_DIR}/style/Styler.hpp
 	${CRU_UI_INCLUDE_DIR}/style/StyleRule.hpp
+	${CRU_UI_INCLUDE_DIR}/style/StyleRuleSet.hpp
 )
 target_link_libraries(cru_ui PUBLIC cru_platform_gui)
diff --git a/src/ui/style/Condition.cpp b/src/ui/style/Condition.cpp
index 2b51bde3..891eb062 100644
--- a/src/ui/style/Condition.cpp
+++ b/src/ui/style/Condition.cpp
@@ -1,6 +1,7 @@
 #include "cru/ui/style/Condition.hpp"
 #include <memory>
 
+#include "cru/common/ClonablePtr.hpp"
 #include "cru/common/Event.hpp"
 #include "cru/ui/controls/Control.hpp"
 #include "cru/ui/controls/IClickableControl.hpp"
@@ -8,16 +9,14 @@
 
 namespace cru::ui::style {
 CompoundCondition::CompoundCondition(
-    std::vector<std::unique_ptr<Condition>> conditions)
-    : conditions_(std::move(conditions)) {
-  for (const auto& p : conditions_) readonly_conditions_.push_back(p.get());
-}
+    std::vector<ClonablePtr<Condition>> conditions)
+    : conditions_(std::move(conditions)) {}
 
 std::vector<IBaseEvent*> CompoundCondition::ChangeOn(
     controls::Control* control) const {
   std::vector<IBaseEvent*> result;
 
-  for (auto condition : GetConditions()) {
+  for (auto condition : conditions_) {
     for (auto e : condition->ChangeOn(control)) {
       result.push_back(e);
     }
@@ -26,24 +25,15 @@ std::vector<IBaseEvent*> CompoundCondition::ChangeOn(
   return result;
 }
 
-std::vector<std::unique_ptr<Condition>> CompoundCondition::CloneConditions()
-    const {
-  std::vector<std::unique_ptr<Condition>> result;
-  for (auto condition : GetConditions()) {
-    result.push_back(condition->Clone());
-  }
-  return result;
-}
-
 bool AndCondition::Judge(controls::Control* control) const {
-  for (auto condition : GetConditions()) {
+  for (auto condition : conditions_) {
     if (!condition->Judge(control)) return false;
   }
   return true;
 }
 
 bool OrCondition::Judge(controls::Control* control) const {
-  for (auto condition : GetConditions()) {
+  for (auto condition : conditions_) {
     if (condition->Judge(control)) return true;
   }
   return false;
diff --git a/src/ui/style/StyleRule.cpp b/src/ui/style/StyleRule.cpp
index 4a5ecf7e..1a72a970 100644
--- a/src/ui/style/StyleRule.cpp
+++ b/src/ui/style/StyleRule.cpp
@@ -1,6 +1,12 @@
 #include "cru/ui/style/StyleRule.hpp"
 
 namespace cru::ui::style {
+StyleRule::StyleRule(ClonablePtr<Condition> condition,
+                     ClonablePtr<Styler> styler, std::u16string name)
+    : condition_(std::move(condition)),
+      styler_(std::move(styler)),
+      name_(std::move(name)) {}
+
 bool StyleRule::CheckAndApply(controls::Control *control) const {
   auto active = condition_->Judge(control);
   if (active) {
diff --git a/src/ui/style/StyleRuleSet.cpp b/src/ui/style/StyleRuleSet.cpp
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/ui/style/StyleRuleSet.cpp