1 files changed, 58 insertions, 0 deletions
diff --git a/include/cru/platform/native/ui_application.hpp b/include/cru/platform/native/ui_application.hpp
new file mode 100644
index 00000000..923fbaf7
--- /dev/null
+++ b/include/cru/platform/native/ui_application.hpp
@@ -0,0 +1,58 @@
+#pragma once
+#include "../native_resource.hpp"
+
+#include "cursor.hpp"
+
+#include <chrono>
+#include <functional>
+#include <vector>
+
+namespace cru::platform::native {
+class NativeWindow;
+
+// The entry point of a ui application.
+// It will call IGraphFactory::CreateInstance during its creation
+// and set graph factory to be auto deleted. If you want to keep
+// the graph factory then you should manually set it to false after
+// creating the ui application.
+class UiApplication : public NativeResource {
+ public:
+  // Create a platform-specific instance and save it as the global instance.
+  // Do not create the instance twice. Implements should assert for that.
+  // After creating, get the instance by GetInstance.
+  static UiApplication* CreateInstance();
+
+  // Get the global instance. If it is not created, then return nullptr.
+  static UiApplication* GetInstance();
+
+ protected:
+  UiApplication() = default;
+
+ public:
+  UiApplication(const UiApplication& other) = delete;
+  UiApplication& operator=(const UiApplication& other) = delete;
+
+  UiApplication(UiApplication&& other) = delete;
+  UiApplication& operator=(UiApplication&& other) = delete;
+
+  ~UiApplication() override = default;
+
+ public:
+  virtual int Run() = 0;
+  virtual void Quit(int quite_code) = 0;
+
+  virtual void AddOnQuitHandler(const std::function<void()>& handler) = 0;
+
+  virtual void InvokeLater(const std::function<void()>& action) = 0;
+  virtual unsigned long SetTimeout(std::chrono::milliseconds milliseconds,
+                                   const std::function<void()>& action) = 0;
+  virtual unsigned long SetInterval(std::chrono::milliseconds milliseconds,
+                                    const std::function<void()>& action) = 0;
+  virtual void CancelTimer(unsigned long id) = 0;
+
+  virtual std::vector<NativeWindow*> GetAllWindow() = 0;
+  virtual NativeWindow* CreateWindow(NativeWindow* parent) = 0;
+
+  virtual CursorManager* GetCursorManager() = 0;
+};
+}  // namespace cru::platform::native