From 13860c88910c00478abe3001cc80125e76767381 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 22 Jan 2022 22:37:24 +0800
Subject: ...

---
 include/cru/ui/mapper/CursorMapper.hpp   | 18 +++++++++++++++-
 include/cru/ui/mapper/Mapper.hpp         |  4 ++++
 include/cru/ui/mapper/MapperRegistry.hpp |  5 +++++
 src/ui/mapper/CursorMapper.cpp           | 35 +++++++++++++++++++++++++++++++-
 4 files changed, 60 insertions(+), 2 deletions(-)

diff --git a/include/cru/ui/mapper/CursorMapper.hpp b/include/cru/ui/mapper/CursorMapper.hpp
index b4254061..6cb61d87 100644
--- a/include/cru/ui/mapper/CursorMapper.hpp
+++ b/include/cru/ui/mapper/CursorMapper.hpp
@@ -1,5 +1,21 @@
 #pragma once
 #include "Mapper.hpp"
 #include "cru/platform/gui/Cursor.hpp"
+#include "cru/xml/XmlNode.hpp"
 
-namespace cru::ui::mapper::style {}
+namespace cru::ui::mapper {
+class CRU_UI_API CursorMapper : public BasicRefMapper<platform::gui::ICursor> {
+ public:
+  CRU_DEFAULT_CONSTRUCTOR_DESTRUCTOR(CursorMapper);
+
+ public:
+  bool SupportMapFromString() override { return true; }
+  bool SupportMapFromXml() override { return true; }
+  bool XmlElementIsOfThisType(xml::XmlElementNode* node) override;
+
+ protected:
+  std::shared_ptr<platform::gui::ICursor> DoMapFromString(String str) override;
+  std::shared_ptr<platform::gui::ICursor> DoMapFromXml(
+      xml::XmlElementNode* node) override;
+};
+}  // namespace cru::ui::mapper
diff --git a/include/cru/ui/mapper/Mapper.hpp b/include/cru/ui/mapper/Mapper.hpp
index d15b63aa..4e5499d0 100644
--- a/include/cru/ui/mapper/Mapper.hpp
+++ b/include/cru/ui/mapper/Mapper.hpp
@@ -5,6 +5,7 @@
 #include "cru/common/Exception.hpp"
 #include "cru/xml/XmlNode.hpp"
 
+#include <memory>
 #include <type_traits>
 #include <typeindex>
 #include <typeinfo>
@@ -81,4 +82,7 @@ class CRU_UI_API BasicMapper : public MapperBase {
   virtual T DoMapFromString(String str) { return {}; }
   virtual T DoMapFromXml(xml::XmlElementNode* node) { return {}; }
 };
+
+template <typename T>
+using BasicRefMapper = BasicMapper<std::shared_ptr<T>>;
 }  // namespace cru::ui::mapper
diff --git a/include/cru/ui/mapper/MapperRegistry.hpp b/include/cru/ui/mapper/MapperRegistry.hpp
index 94643ce0..55051ba9 100644
--- a/include/cru/ui/mapper/MapperRegistry.hpp
+++ b/include/cru/ui/mapper/MapperRegistry.hpp
@@ -29,6 +29,11 @@ class CRU_UI_API MapperRegistry {
     return nullptr;
   }
 
+  template <typename T>
+  BasicRefMapper<T>* GetRefMapper() const {
+    return GetMapper<std::shared_ptr<T>>();
+  }
+
   void RegisterMapper(MapperBase* mapper);
   void UnregisterMapper(MapperBase* mapper);
 
diff --git a/src/ui/mapper/CursorMapper.cpp b/src/ui/mapper/CursorMapper.cpp
index 2dd08219..d77da2a5 100644
--- a/src/ui/mapper/CursorMapper.cpp
+++ b/src/ui/mapper/CursorMapper.cpp
@@ -1,3 +1,36 @@
 #include "cru/ui/mapper/CursorMapper.hpp"
+#include "../Helper.hpp"
+#include "cru/common/Exception.hpp"
+#include "cru/platform/gui/Cursor.hpp"
+#include "cru/platform/gui/UiApplication.hpp"
 
-namespace cru::ui::mapper {}
+namespace cru::ui::mapper {
+using cru::platform::gui::ICursor;
+using cru::platform::gui::SystemCursorType;
+
+bool CursorMapper::XmlElementIsOfThisType(xml::XmlElementNode *node) {
+  return node->GetTag() == u"Cursor";
+}
+
+std::shared_ptr<ICursor> CursorMapper::DoMapFromString(String str) {
+  if (str.empty()) return nullptr;
+
+  auto cursor_manager = GetUiApplication()->GetCursorManager();
+
+  if (str == u"arrow") {
+    return cursor_manager->GetSystemCursor(SystemCursorType::Arrow);
+  } else if (str == u"hand") {
+    return cursor_manager->GetSystemCursor(SystemCursorType::Hand);
+  } else if (str == u"ibeam") {
+    return cursor_manager->GetSystemCursor(SystemCursorType::IBeam);
+  } else {
+    throw Exception(u"Unsupported cursor type.");
+  }
+}
+
+std::shared_ptr<ICursor> CursorMapper::DoMapFromXml(xml::XmlElementNode *node) {
+  auto value_attr = node->GetOptionalAttribute(u"value");
+  if (!value_attr) return nullptr;
+  return DoMapFromString(*value_attr);
+}
+}  // namespace cru::ui::mapper
-- 
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