1 files changed, 107 insertions, 0 deletions
diff --git a/src/ui/animations/animation.h b/src/ui/animations/animation.h
new file mode 100644
index 00000000..69b08b0c
--- /dev/null
+++ b/src/ui/animations/animation.h
@@ -0,0 +1,107 @@
+#pragma once
+
+#include <unordered_map>
+
+#include "base.h"
+#include "application.h"
+#include "timer.h"
+
+namespace cru::ui::animations
+{
+    using AnimationTimeUnit = FloatSecond;
+
+    
+    using IAnimationDelegate = ICancelable;
+    using AnimationDelegatePtr = CancelablePtr;
+
+    using AnimationStepHandlerPtr = FunctionPtr<void(AnimationDelegatePtr, double)>;
+    using AnimationStartHandlerPtr = FunctionPtr<void(AnimationDelegatePtr)>;
+
+
+    namespace details
+    {
+        class Animation;
+        using AnimationPtr = std::unique_ptr<Animation>;
+
+        class AnimationManager : public Object
+        {
+        public:
+            static AnimationManager* GetInstance()
+            {
+                return Application::GetInstance()->GetAnimationManager();
+            }
+
+        public:
+            AnimationManager();
+            AnimationManager(const AnimationManager& other) = delete;
+            AnimationManager(AnimationManager&& other) = delete;
+            AnimationManager& operator=(const AnimationManager& other) = delete;
+            AnimationManager& operator=(AnimationManager&& other) = delete;
+            ~AnimationManager() override;
+
+            AnimationDelegatePtr CreateAnimation(
+                String tag,
+                AnimationTimeUnit duration,
+                Vector<AnimationStepHandlerPtr> step_handlers,
+                Vector<AnimationStartHandlerPtr> start_handlers,
+                Vector<ActionPtr> finish_handlers,
+                Vector<ActionPtr> cancel_handlers
+            );
+            void RemoveAnimation(const String& tag);
+
+        private:
+            void SetTimer();
+            void KillTimer();
+
+        private:
+            std::unordered_map<String, AnimationPtr> animations_;
+            std::shared_ptr<ICancelable> timer_;
+            ActionPtr timer_action_;
+        };
+    }
+
+    class AnimationBuilder : public Object
+    {
+    public:
+        AnimationBuilder(String tag, const AnimationTimeUnit duration)
+            : tag(std::move(tag)), duration(duration)
+        {
+
+        }
+
+        String tag;
+        AnimationTimeUnit duration;
+
+        AnimationBuilder& AddStepHandler(AnimationStepHandlerPtr handler)
+        {
+            step_handlers_.push_back(std::move(handler));
+            return *this;
+        }
+
+        AnimationBuilder& AddStartHandler(AnimationStartHandlerPtr handler)
+        {
+            start_handlers_.push_back(std::move(handler));
+            return *this;
+        }
+
+        AnimationBuilder& AddFinishHandler(ActionPtr handler)
+        {
+            finish_handlers_.push_back(std::move(handler));
+            return *this;
+        }
+
+        AnimationBuilder& AddCancelHandler(ActionPtr handler)
+        {
+            cancel_handlers_.push_back(std::move(handler));
+            return *this;
+        }
+
+        AnimationDelegatePtr Start() const;
+
+    private:
+        Vector<AnimationStepHandlerPtr> step_handlers_;
+        Vector<AnimationStartHandlerPtr> start_handlers_;
+        Vector<ActionPtr> finish_handlers_;
+        Vector<ActionPtr> cancel_handlers_;
+    };
+}