@GUI::Widget { fill_with_background_color: true layout: @GUI::VerticalBoxLayout { spacing: 2 } @GUI::HorizontalSplitter { @GUI::TreeView { name: "mailbox_list" preferred_width: 250 } @GUI::VerticalSplitter { @GUI::TableView { name: "individual_mailbox_view" } @WebView::OutOfProcessWebView { name: "web_view" } } } @GUI::Statusbar { name: "statusbar" } }