Profiler: Present read event info in tree structure

This commit adds "Filesystem Events" View to the Profiler. This tab
 will present combined information for recorded Filesystem events.
Currently only accumulated count and duration is presented.
Duration amount currently only shows events that took over 1ms,
which means that in most cases 0 is show.

1 files changed, 10 insertions, 0 deletions

diff --git a/Userland/DevTools/Profiler/main.cpp b/Userland/DevTools/Profiler/main.cpp
index 59ace5eee7..3fd79f0b75 100644
--- a/Userland/DevTools/Profiler/main.cpp
+++ b/Userland/DevTools/Profiler/main.cpp
@@ -252,6 +252,16 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     timeline_view->on_selection_change = [&] { statusbar_update(); };
     flamegraph_view->on_hover_change = [&] { statusbar_update(); };
 
+    auto filesystem_events_tab = TRY(tab_widget->try_add_tab<GUI::Widget>("Filesystem events"));
+    filesystem_events_tab->set_layout<GUI::VerticalBoxLayout>();
+    filesystem_events_tab->layout()->set_margins(4);
+
+    auto filesystem_events_tree_view = TRY(filesystem_events_tab->try_add<GUI::TreeView>());
+    filesystem_events_tree_view->set_should_fill_selected_rows(true);
+    filesystem_events_tree_view->set_column_headers_visible(true);
+    filesystem_events_tree_view->set_selection_behavior(GUI::TreeView::SelectionBehavior::SelectRows);
+    filesystem_events_tree_view->set_model(profile->file_event_model());
+
     auto file_menu = TRY(window->try_add_menu("&File"));
     TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([&](auto&) { app->quit(); })));