3 files changed, 23 insertions, 4 deletions
diff --git a/Applications/FileManager/DirectoryTableModel.cpp b/Applications/FileManager/DirectoryTableModel.cpp
index c21a8a98d7..e04b544098 100644
--- a/Applications/FileManager/DirectoryTableModel.cpp
+++ b/Applications/FileManager/DirectoryTableModel.cpp
@@ -137,8 +137,21 @@ String DirectoryTableModel::name_for_gid(uid_t gid) const
 
 GVariant DirectoryTableModel::data(const GModelIndex& index, Role role) const
 {
-    ASSERT(role == Role::Display);
+    ASSERT(is_valid(index));
     auto& entry = this->entry(index.row());
+    if (role == Role::Sort) {
+        switch (index.column()) {
+        case Column::Icon: return entry.is_directory() ? 0 : 1;
+        case Column::Name: return entry.name;
+        case Column::Size: return (int)entry.size;
+        case Column::Owner: return name_for_uid(entry.uid);
+        case Column::Group: return name_for_gid(entry.gid);
+        case Column::Permissions: return permission_string(entry.mode);
+        case Column::Inode: return (int)entry.inode;
+        }
+        ASSERT_NOT_REACHED();
+    }
+    ASSERT(role == Role::Display);
     switch (index.column()) {
     case Column::Icon: return icon_for(entry);
     case Column::Name: return entry.name;
diff --git a/Applications/FileManager/DirectoryTableView.cpp b/Applications/FileManager/DirectoryTableView.cpp
index 4e116a1981..28f54303de 100644
--- a/Applications/FileManager/DirectoryTableView.cpp
+++ b/Applications/FileManager/DirectoryTableView.cpp
@@ -1,9 +1,13 @@
 #include "DirectoryTableView.h"
+#include <LibGUI/GSortingProxyTableModel.h>
 
 DirectoryTableView::DirectoryTableView(GWidget* parent)
     : GTableView(parent)
 {
-    set_model(make<DirectoryTableModel>());
+    auto directory_model = make<DirectoryTableModel>();
+    m_model = directory_model.ptr();
+    set_model(make<GSortingProxyTableModel>(move(directory_model)));
+    GTableView::model()->set_key_column_and_sort_order(DirectoryTableModel::Column::Name, GSortOrder::Ascending);
 }
 
 DirectoryTableView::~DirectoryTableView()
diff --git a/Applications/FileManager/DirectoryTableView.h b/Applications/FileManager/DirectoryTableView.h
index 4d2c369a81..1bc56e8ab1 100644
--- a/Applications/FileManager/DirectoryTableView.h
+++ b/Applications/FileManager/DirectoryTableView.h
@@ -19,8 +19,10 @@ public:
 private:
     virtual void model_notification(const GModelNotification&) override;
 
-    DirectoryTableModel& model() { return static_cast<DirectoryTableModel&>(*GTableView::model()); }
-    const DirectoryTableModel& model() const { return static_cast<const DirectoryTableModel&>(*GTableView::model()); }
+    DirectoryTableModel& model() { return *m_model; }
+    const DirectoryTableModel& model() const { return *m_model; }
 
     void set_status_message(const String&);
+
+    DirectoryTableModel* m_model { nullptr };
 };