refactor(new_editor/app): reorganize host structure and add smoke test

new_editor/app/Features/Project/ProjectBrowserModelAssets.cpp

@@ -0,0 +1,56 @@
+#include "ProjectBrowserModelSupport.h"
+
+namespace XCEngine::UI::Editor::App {
+
+using namespace ProjectBrowserModelSupport;
+
+void ProjectBrowserModel::RefreshAssetList() {
+    EnsureValidCurrentFolder();
+
+    m_assetEntries.clear();
+    const FolderEntry* currentFolder = FindFolderEntry(m_currentFolderId);
+    if (currentFolder == nullptr) {
+        return;
+    }
+
+    std::vector<std::filesystem::directory_entry> entries = {};
+    std::error_code errorCode = {};
+    const std::filesystem::directory_iterator end = {};
+    for (std::filesystem::directory_iterator iterator(currentFolder->absolutePath, errorCode);
+         !errorCode && iterator != end;
+         iterator.increment(errorCode)) {
+        if (!iterator->exists(errorCode) || IsMetaFile(iterator->path())) {
+            continue;
+        }
+        if (!iterator->is_directory(errorCode) && !iterator->is_regular_file(errorCode)) {
+            continue;
+        }
+
+        entries.push_back(*iterator);
+    }
+
+    std::sort(
+        entries.begin(),
+        entries.end(),
+        [](const std::filesystem::directory_entry& lhs, const std::filesystem::directory_entry& rhs) {
+            const bool lhsDirectory = lhs.is_directory();
+            const bool rhsDirectory = rhs.is_directory();
+            if (lhsDirectory != rhsDirectory) {
+                return lhsDirectory && !rhsDirectory;
+            }
+
+            return ToLowerCopy(PathToUtf8String(lhs.path().filename())) <
+                ToLowerCopy(PathToUtf8String(rhs.path().filename()));
+        });
+
+    for (const std::filesystem::directory_entry& entry : entries) {
+        AssetEntry assetEntry = {};
+        assetEntry.itemId = BuildRelativeItemId(entry.path(), m_assetsRootPath);
+        assetEntry.absolutePath = entry.path();
+        assetEntry.displayName = BuildAssetDisplayName(entry.path(), entry.is_directory());
+        assetEntry.directory = entry.is_directory();
+        m_assetEntries.push_back(std::move(assetEntry));
+    }
+}
+
+} // namespace XCEngine::UI::Editor::App