From 0fb7a0e0b2b9e04ca414b1e47c69cc854c79831b Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 1 Dec 2020 23:20:01 +0800
Subject: ...

---
 include/cru/ui/style/Styler.hpp  |  0
 include/cru/ui/style/Trigger.hpp | 75 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 include/cru/ui/style/Styler.hpp
 create mode 100644 include/cru/ui/style/Trigger.hpp

(limited to 'include/cru/ui/style')

diff --git a/include/cru/ui/style/Styler.hpp b/include/cru/ui/style/Styler.hpp
new file mode 100644
index 00000000..e69de29b
diff --git a/include/cru/ui/style/Trigger.hpp b/include/cru/ui/style/Trigger.hpp
new file mode 100644
index 00000000..ab012a3e
--- /dev/null
+++ b/include/cru/ui/style/Trigger.hpp
@@ -0,0 +1,75 @@
+#pragma once
+#include "../Base.hpp"
+#include "cru/common/Base.hpp"
+#include "cru/common/Event.hpp"
+#include "cru/ui/controls/IClickableControl.hpp"
+#include "cru/ui/helper/ClickDetector.hpp"
+
+#include <utility>
+#include <vector>
+
+namespace cru::ui::style {
+class Trigger {
+ public:
+  virtual ~Trigger() = default;
+
+  bool GetState() const { return current_; }
+  IEvent<bool>* ChangeEvent() { return &change_event_; }
+
+ protected:
+  void Raise(bool value);
+
+ private:
+  bool current_ = false;
+  Event<bool> change_event_;
+
+ protected:
+  EventRevokerListGuard guard_;
+};
+
+class CompoundTrigger : public Trigger {
+ public:
+  explicit CompoundTrigger(std::vector<Trigger*> triggers);
+
+  const std::vector<Trigger*>& GetTriggers() const { return triggers_; }
+
+ protected:
+  virtual bool CalculateState(const std::vector<Trigger*>& triggers) const = 0;
+
+ private:
+  std::vector<Trigger*> triggers_;
+};
+
+class AndTrigger : public CompoundTrigger {
+ public:
+  using CompoundTrigger::CompoundTrigger;
+
+ protected:
+  bool CalculateState(const std::vector<Trigger*>& triggers) const override;
+};
+
+class OrTrigger : public CompoundTrigger {
+ public:
+  using CompoundTrigger::CompoundTrigger;
+
+ protected:
+  bool CalculateState(const std::vector<Trigger*>& triggers) const override;
+};
+
+class FocusTrigger : public Trigger {
+ public:
+  FocusTrigger(controls::Control* control, bool has_focus);
+
+ private:
+  bool has_focus_;
+};
+
+class ClickStateTrigger : public Trigger {
+ public:
+  ClickStateTrigger(controls::IClickableControl* control,
+                    helper::ClickState click_state);
+
+ private:
+  helper::ClickState click_state_;
+};
+}  // namespace cru::ui::style
-- 
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