derive tab labels

src/tui.zig

@@ -86,31 +86,44 @@ pub fn glyph(ch: u8) []const u8 {
     return " ";
 }
 
-pub const Tab = enum {
-    portfolio,
-    quote,
-    performance,
-    options,
-    earnings,
-    analysis,
-    history,
-    projections,
-
-    fn label(self: Tab) []const u8 {
-        return switch (self) {
-            .portfolio => " 1:Portfolio ",
-            .quote => " 2:Quote ",
-            .performance => " 3:Performance ",
-            .options => " 4:Options ",
-            .earnings => " 5:Earnings ",
-            .analysis => " 6:Analysis ",
-            .history => " 7:History ",
-            .projections => " 8:Projections ",
-        };
+/// Tab enum derived from `tab_modules` registry. Each variant
+/// matches a registry field name; variant order = registry order
+/// = tab-bar display order. Adding a tab requires no edit here —
+/// just append to `tab_modules` and the variant appears.
+pub const Tab = blk: {
+    const reg_fields = std.meta.fields(@TypeOf(tab_modules));
+    var names: [reg_fields.len][]const u8 = undefined;
+    var values: [reg_fields.len]u8 = undefined;
+    for (reg_fields, 0..) |f, i| {
+        names[i] = f.name;
+        values[i] = @intCast(i);
     }
+    break :blk @Enum(u8, .exhaustive, &names, &values);
 };
 
-const tabs = [_]Tab{ .portfolio, .quote, .performance, .options, .earnings, .analysis, .history, .projections };
+/// Comptime lookup table of tab-bar display labels, indexed by
+/// `@intFromEnum(tab)`. Each entry is `" {N}:{label} "` composed
+/// from the 1-indexed registry position + the tab module's
+/// `pub const label`. The format (number prefix, padding) is
+/// framework policy; the bare name is owned by the tab module.
+const tab_labels = blk: {
+    const reg_fields = std.meta.fields(@TypeOf(tab_modules));
+    var arr: [reg_fields.len][]const u8 = undefined;
+    for (reg_fields, 0..) |f, i| {
+        const Module = @field(tab_modules, f.name);
+        arr[i] = std.fmt.comptimePrint(" {d}:{s} ", .{ i + 1, Module.tab.label });
+    }
+    break :blk arr;
+};
+
+fn tabLabel(t: Tab) []const u8 {
+    return tab_labels[@intFromEnum(t)];
+}
+
+/// All tab variants in registry order. Used for tab-bar iteration
+/// (rendering, hit-testing, next/prev navigation). Equivalent to
+/// `std.enums.values(Tab)`; aliased for brevity at call sites.
+const tabs: []const Tab = std.enums.values(Tab);
 
 pub const InputMode = enum {
     normal,
@@ -645,7 +658,7 @@ pub const App = struct {
                 if (mouse.row == 0) {
                     var col: i16 = 0;
                     for (tabs) |t| {
-                        const lbl_len: i16 = @intCast(t.label().len);
+                        const lbl_len: i16 = @intCast(tabLabel(t).len);
                         if (mouse.col >= col and mouse.col < col + lbl_len) {
                             if (self.isDisabled(t)) return;
                             self.active_tab = t;
@@ -1667,7 +1680,7 @@ pub const App = struct {
 
         var col: usize = 0;
         for (tabs) |t| {
-            const lbl = t.label();
+            const lbl = tabLabel(t);
             const is_active = t == self.active_tab;
             const is_disabled = self.isDisabled(t);
             const tab_style: vaxis.Style = if (is_active) th.tabActiveStyle() else if (is_disabled) th.tabDisabledStyle() else inactive_style;
@@ -2425,6 +2438,6 @@ test "SortDirection flip and indicator" {
 }
 
 test "Tab label" {
-    try testing.expectEqualStrings(" 1:Portfolio ", Tab.portfolio.label());
-    try testing.expectEqualStrings(" 6:Analysis ", Tab.analysis.label());
+    try testing.expectEqualStrings(" 1:Portfolio ", tabLabel(.portfolio));
+    try testing.expectEqualStrings(" 6:Analysis ", tabLabel(.analysis));
 }

src/tui/analysis_tab.zig

@@ -39,6 +39,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Analysis";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{};
     pub const action_labels = std.enums.EnumArray(Action, []const u8).initFill("");
     pub const status_hints: []const Action = &.{};

src/tui/earnings_tab.zig

@@ -47,6 +47,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Earnings";
+
     /// No tab-local bindings — refresh is global. Empty placeholder.
     pub const default_bindings: []const framework.TabBinding(Action) = &.{};
 

src/tui/history_tab.zig

@@ -149,6 +149,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "History";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{
         .{ .action = .expand_collapse, .key = .{ .codepoint = vaxis.Key.enter } },
         .{ .action = .metric_next, .key = .{ .codepoint = 'm' } },

src/tui/options_tab.zig

@@ -75,6 +75,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Options";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{
         .{ .action = .expand_collapse, .key = .{ .codepoint = vaxis.Key.enter } },
         .{ .action = .collapse_all_calls, .key = .{ .codepoint = 'c' } },

src/tui/performance_tab.zig

@@ -33,6 +33,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Performance";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{};
     pub const action_labels = std.enums.EnumArray(Action, []const u8).initFill("");
     pub const status_hints: []const Action = &.{};

src/tui/portfolio_tab.zig

@@ -122,6 +122,10 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar. Composed by the framework
+    /// into `" {N}:{label} "` where N is the registry index.
+    pub const label: []const u8 = "Portfolio";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{
         // These are dead until scoped keymaps land — the global
         // keymap matches first. Declared per-tab so the help

src/tui/projections_tab.zig

@@ -132,6 +132,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Projections";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{
         // Today's keybinds are in the global keymap (sort_reverse,
         // toggle_chart, toggle_events, projections_as_of_input).
@@ -213,8 +216,8 @@ pub const tab = struct {
                 freeLoaded(state, app);
                 state.loaded = false;
                 loadData(state, app);
-                const label = if (state.events_enabled) "Events enabled" else "Events disabled";
-                app.setStatus(label);
+                const status_msg = if (state.events_enabled) "Events enabled" else "Events disabled";
+                app.setStatus(status_msg);
             },
             .as_of_input => {
                 app.mode = .date_input;

src/tui/quote_tab.zig

@@ -46,6 +46,9 @@ pub const tab = struct {
     pub const ActionT = Action;
     pub const StateT = State;
 
+    /// Display name for the tab bar.
+    pub const label: []const u8 = "Quote";
+
     pub const default_bindings: []const framework.TabBinding(Action) = &.{
         .{ .action = .chart_timeframe_next, .key = .{ .codepoint = ']' } },
         .{ .action = .chart_timeframe_prev, .key = .{ .codepoint = '[' } },

src/tui/tab_framework.zig

@@ -16,6 +16,11 @@
 //!     pub const ActionT = Action;
 //!     pub const StateT = State;
 //!
+//!     /// Display name for the tab bar. The framework composes
+//!     /// this into `" {N}:{label} "` where N is the tab's
+//!     /// 1-indexed registry position.
+//!     pub const label: []const u8 = "...";
+//!
 //!     /// Default keybindings for this tab.
 //!     pub const default_bindings: []const TabBinding(Action) = &.{ ... };
 //!
@@ -231,6 +236,13 @@ pub fn validateTabModule(comptime Module: type) void {
         }
 
         // ── Binding / label / hint constants ───────────────────
+        expectDeclWithType(
+            mod_name,
+            tab_decl,
+            "label",
+            []const u8,
+            "pub const label: []const u8 = \"...\";",
+        );
         expectDeclWithType(
             mod_name,
             tab_decl,