From 6315e654ce0be2d2cc148e9ff80f611ac1176348 Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Thu, 6 Nov 2025 17:27:10 +0800
Subject: Refactor Event.

---
 include/cru/ui/controls/Button.h                 | 2 +-
 include/cru/ui/controls/IconButton.h             | 5 +++--
 include/cru/ui/controls/RootControl.h            | 2 +-
 include/cru/ui/controls/TextHostControlService.h | 4 ++--
 include/cru/ui/events/RoutedEvent.h              | 2 +-
 include/cru/ui/helper/ClickDetector.h            | 6 +++---
 include/cru/ui/helper/ShortcutHub.h              | 2 +-
 include/cru/ui/host/WindowHost.h                 | 2 +-
 include/cru/ui/render/ScrollBar.h                | 2 +-
 include/cru/ui/render/ScrollRenderObject.h       | 2 +-
 include/cru/ui/style/StyleRuleSet.h              | 4 ++--
 11 files changed, 17 insertions(+), 16 deletions(-)

(limited to 'include/cru/ui')

diff --git a/include/cru/ui/controls/Button.h b/include/cru/ui/controls/Button.h
index 3c01be32..e8fa50f1 100644
--- a/include/cru/ui/controls/Button.h
+++ b/include/cru/ui/controls/Button.h
@@ -33,7 +33,7 @@ class CRU_UI_API Button : public SingleChildControl<render::BorderRenderObject>,
     return click_detector_.StateChangeEvent();
   }
 
-  IEvent<helper::ClickEventArgs>* ClickEvent() {
+  IEvent<const helper::ClickEventArgs&>* ClickEvent() {
     return click_detector_.ClickEvent();
   }
 
diff --git a/include/cru/ui/controls/IconButton.h b/include/cru/ui/controls/IconButton.h
index 9e7572e0..e52d2a26 100644
--- a/include/cru/ui/controls/IconButton.h
+++ b/include/cru/ui/controls/IconButton.h
@@ -39,7 +39,7 @@ class CRU_UI_API IconButton : public NoChildControl,
     return click_detector_.StateChangeEvent();
   }
 
-  IEvent<helper::ClickEventArgs>* ClickEvent() {
+  IEvent<const helper::ClickEventArgs&>* ClickEvent() {
     return click_detector_.ClickEvent();
   }
 
@@ -87,7 +87,8 @@ class CRU_UI_API IconButton : public NoChildControl,
   void SetIconWithSvgPathDataString(std::string_view icon_svg_path_data_string,
                                     const Rect& view_port);
   void SetIconWithSvgPathDataStringResourceKey(
-      std::string_view icon_svg_path_data_string_resource_key, const Rect& view_port);
+      std::string_view icon_svg_path_data_string_resource_key,
+      const Rect& view_port);
 
   std::shared_ptr<platform::graphics::IBrush> GetContentBrush() const override {
     return GetIconFillBrush();
diff --git a/include/cru/ui/controls/RootControl.h b/include/cru/ui/controls/RootControl.h
index 5fa8090e..e662b655 100644
--- a/include/cru/ui/controls/RootControl.h
+++ b/include/cru/ui/controls/RootControl.h
@@ -28,7 +28,7 @@ class CRU_UI_API RootControl
 
   Control* attached_control_;
 
-  EventRevokerListGuard
+  EventHandlerRevokerListGuard
       gain_focus_on_create_and_destroy_when_lose_focus_event_guard_;
 };
 }  // namespace cru::ui::controls
diff --git a/include/cru/ui/controls/TextHostControlService.h b/include/cru/ui/controls/TextHostControlService.h
index 529225a7..a9f4f22b 100644
--- a/include/cru/ui/controls/TextHostControlService.h
+++ b/include/cru/ui/controls/TextHostControlService.h
@@ -187,8 +187,8 @@ class CRU_UI_API TextHostControlService : public Object {
 
   Event<std::nullptr_t> text_change_event_;
 
-  EventRevokerListGuard event_guard_;
-  EventRevokerListGuard input_method_context_event_guard_;
+  EventHandlerRevokerListGuard event_guard_;
+  EventHandlerRevokerListGuard input_method_context_event_guard_;
 
   std::string text_;
   TextRange selection_;
diff --git a/include/cru/ui/events/RoutedEvent.h b/include/cru/ui/events/RoutedEvent.h
index a01839a6..9a07e1e9 100644
--- a/include/cru/ui/events/RoutedEvent.h
+++ b/include/cru/ui/events/RoutedEvent.h
@@ -16,7 +16,7 @@ class CRU_UI_API RoutedEvent {
 
   using RawEventArgs = TEventArgs;
   using IEventType = IEvent<TEventArgs&>;
-  using EventArgs = typename IEventType::EventArgs;
+  using EventArgs = typename IEventType::Args;
 
   RoutedEvent() = default;
   RoutedEvent(const RoutedEvent& other) = delete;
diff --git a/include/cru/ui/helper/ClickDetector.h b/include/cru/ui/helper/ClickDetector.h
index eaf1f4af..2eb453d9 100644
--- a/include/cru/ui/helper/ClickDetector.h
+++ b/include/cru/ui/helper/ClickDetector.h
@@ -57,7 +57,7 @@ class ClickDetector : public Object {
   // deactivated.
   void SetTriggerButton(MouseButton trigger_button);
 
-  IEvent<ClickEventArgs>* ClickEvent() { return &event_; }
+  IEvent<const ClickEventArgs&>* ClickEvent() { return &event_; }
 
   IEvent<ClickState>* StateChangeEvent() { return &state_change_event_; }
 
@@ -72,10 +72,10 @@ class ClickDetector : public Object {
   bool enable_ = true;
   MouseButton trigger_button_ = MouseButtons::Left | MouseButtons::Right;
 
-  Event<ClickEventArgs> event_;
+  Event<const ClickEventArgs&> event_;
   Event<ClickState> state_change_event_;
 
-  std::vector<EventRevokerGuard> event_rovoker_guards_;
+  std::vector<EventHandlerRevokerGuard> event_rovoker_guards_;
 
   Point down_point_;
   MouseButton button_;
diff --git a/include/cru/ui/helper/ShortcutHub.h b/include/cru/ui/helper/ShortcutHub.h
index d2c9952b..1b600c48 100644
--- a/include/cru/ui/helper/ShortcutHub.h
+++ b/include/cru/ui/helper/ShortcutHub.h
@@ -131,6 +131,6 @@ class CRU_UI_API ShortcutHub : public Object {
 
   Event<events::KeyEventArgs&> fallback_event_;
 
-  EventRevokerListGuard event_guard_;
+  EventHandlerRevokerListGuard event_guard_;
 };
 }  // namespace cru::ui::helper
diff --git a/include/cru/ui/host/WindowHost.h b/include/cru/ui/host/WindowHost.h
index 6e7a0f2e..889665d5 100644
--- a/include/cru/ui/host/WindowHost.h
+++ b/include/cru/ui/host/WindowHost.h
@@ -156,7 +156,7 @@ class CRU_UI_API WindowHost : public Object, public SelfResolvable<WindowHost> {
   Event<AfterLayoutEventArgs> after_layout_event_;
   std::vector<std::function<void()> > after_layout_stable_action_;
 
-  std::vector<EventRevokerGuard> event_revoker_guards_;
+  std::vector<EventHandlerRevokerGuard> event_revoker_guards_;
 
   controls::Control* mouse_hover_control_ = nullptr;
 
diff --git a/include/cru/ui/render/ScrollBar.h b/include/cru/ui/render/ScrollBar.h
index 8c531489..50b21386 100644
--- a/include/cru/ui/render/ScrollBar.h
+++ b/include/cru/ui/render/ScrollBar.h
@@ -136,7 +136,7 @@ class CRU_UI_API ScrollBar : public Object {
   std::optional<ScrollBarAreaKind> mouse_hover_;
   std::optional<ScrollBarAreaKind> mouse_press_;
 
-  EventRevokerListGuard event_guard_;
+  EventHandlerRevokerListGuard event_guard_;
 
   Event<Scroll> scroll_attempt_event_;
 
diff --git a/include/cru/ui/render/ScrollRenderObject.h b/include/cru/ui/render/ScrollRenderObject.h
index 63a49aa3..348d7af1 100644
--- a/include/cru/ui/render/ScrollRenderObject.h
+++ b/include/cru/ui/render/ScrollRenderObject.h
@@ -95,6 +95,6 @@ class CRU_UI_API ScrollRenderObject : public SingleChildRenderObject {
 
   bool is_mouse_wheel_enabled_ = true;
 
-  EventRevokerListGuard guard_;
+  EventHandlerRevokerListGuard guard_;
 };
 }  // namespace cru::ui::render
diff --git a/include/cru/ui/style/StyleRuleSet.h b/include/cru/ui/style/StyleRuleSet.h
index 0b7a237d..d89c3ae1 100644
--- a/include/cru/ui/style/StyleRuleSet.h
+++ b/include/cru/ui/style/StyleRuleSet.h
@@ -63,7 +63,7 @@ class CRU_UI_API StyleRuleSet : public Object, public model::IListChangeNotify {
   Event<model::ListChange> list_change_event_;
 
   std::shared_ptr<StyleRuleSet> parent_ = nullptr;
-  EventRevokerGuard parent_change_event_guard_;
+  EventHandlerRevokerGuard parent_change_event_guard_;
 
   std::vector<StyleRule> rules_;
 };
@@ -90,6 +90,6 @@ class CRU_UI_API StyleRuleSetBind {
   // child first, parent last.
   std::vector<StyleRuleSet*> ruleset_chain_cache_;
 
-  EventRevokerListGuard guard_;
+  EventHandlerRevokerListGuard guard_;
 };
 }  // namespace cru::ui::style
-- 
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