1 files changed, 84 insertions, 0 deletions
diff --git a/include/cru/ui/ThemeResourceDictionary.h b/include/cru/ui/ThemeResourceDictionary.h
new file mode 100644
index 00000000..26f7ec8d
--- /dev/null
+++ b/include/cru/ui/ThemeResourceDictionary.h
@@ -0,0 +1,84 @@
+#pragma once
+#include "Base.h"
+
+#include "cru/common/Base.h"
+#include "cru/xml/XmlNode.h"
+#include "mapper/MapperRegistry.h"
+#include "style/StyleRuleSet.h"
+
+#include <any>
+#include <typeindex>
+#include <typeinfo>
+
+namespace cru::ui {
+class CRU_UI_API ThemeResourceKeyNotExistException : public Exception {
+ public:
+  using Exception::Exception;
+};
+
+class CRU_UI_API BadThemeResourceException : public Exception {
+ public:
+  using Exception::Exception;
+};
+
+class CRU_UI_API ThemeResourceDictionary : public Object {
+  CRU_DEFINE_CLASS_LOG_TAG(u"ThemeResources");
+
+ public:
+  static std::unique_ptr<ThemeResourceDictionary> FromFile(const String& file_path);
+
+  explicit ThemeResourceDictionary(xml::XmlElementNode* xml_root, bool clone = true);
+
+  CRU_DELETE_COPY(ThemeResourceDictionary)
+  CRU_DELETE_MOVE(ThemeResourceDictionary)
+
+  ~ThemeResourceDictionary() override;
+
+ public:
+  template <typename T>
+  T GetResource(const String& key) {
+    auto find_result = resource_map_.find(key);
+    if (find_result == resource_map_.cend()) {
+      throw ThemeResourceKeyNotExistException(
+          Format(u"Theme resource key {} not exist.", key));
+    }
+
+    auto& cache = find_result->second.cache;
+    auto cache_find_result = cache.find(typeid(T));
+    if (cache_find_result != cache.cend()) {
+      return std::any_cast<T>(cache_find_result->second);
+    }
+
+    auto mapper_registry = mapper::MapperRegistry::GetInstance();
+    auto mapper = mapper_registry->GetMapper<T>();
+    auto resource = mapper->MapFromXml(find_result->second.xml_node);
+    cache[typeid(T)] = resource;
+    return resource;
+  }
+
+  std::shared_ptr<platform::graphics::IBrush> GetResourceBrush(
+      const String& key);
+
+  std::shared_ptr<platform::graphics::IFont> GetResourceFont(const String& key);
+
+  std::shared_ptr<style::StyleRuleSet> GetResourceStyleRuleSet(
+      const String& key);
+
+ private:
+  void UpdateResourceMap(xml::XmlElementNode* root_xml);
+
+ private:
+  struct ResourceEntry {
+    CRU_DEFAULT_CONSTRUCTOR_DESTRUCTOR(ResourceEntry)
+    CRU_DEFAULT_COPY(ResourceEntry)
+    CRU_DEFAULT_MOVE(ResourceEntry)
+
+    String name;
+    xml::XmlElementNode* xml_node;
+    std::unordered_map<std::type_index, std::any> cache;
+  };
+
+  std::unique_ptr<xml::XmlElementNode> xml_root_;
+  std::unordered_map<String, ResourceEntry> resource_map_;
+};
+}  // namespace cru::ui