Refactor editor UI architecture

editor/src/panels/ProjectPanel.h

@@ -2,6 +2,7 @@
 
 #include "Panel.h"
 #include "Core/AssetItem.h"
+#include "UI/PopupState.h"
 
 namespace XCEngine {
 namespace Editor {
@@ -14,15 +15,12 @@ public:
 
 private:
     void RenderAssetItem(const AssetItemPtr& item, int index);
-    void CreateNewFolder(const std::string& name);
-    bool HandleDrop(const AssetItemPtr& targetFolder);
     
     char m_searchBuffer[256] = "";
-    bool m_showCreateFolderPopup = false;
-    char m_newFolderName[256] = "NewFolder";
+    UI::TextInputPopupState<256> m_createFolderDialog;
     int m_contextMenuIndex = -1;
     std::string m_draggingPath;
 };
 
 }
-}
+}