allow disabling tabs, new tab button in tab bar

refs: https://github.com/wez/wezterm/issues/2082

config/src/config.rs

@@ -389,6 +389,12 @@ pub struct Config {
     #[dynamic(default = "default_true")]
     pub show_tab_index_in_tab_bar: bool,
 
+    #[dynamic(default = "default_true")]
+    pub show_tabs_in_tab_bar: bool,
+
+    #[dynamic(default = "default_true")]
+    pub show_new_tab_button_in_tab_bar: bool,
+
     /// If true, show_tab_index_in_tab_bar uses a zero-based index.
     /// The default is false and the tab shows a one-based index.
     #[dynamic(default)]

docs/changelog.md

@@ -46,6 +46,10 @@ As features stabilize some brief notes about them will accumulate here.
 * [ActivateKeyTable](config/lua/keyassignment/ActivateKeyTable.md) now also
   supports `prevent_fallback = true` as a parameter.
   [#2702](https://github.com/wez/wezterm/issues/2702)
+* [show_tabs_in_tab_bar](config/lua/config/show_tabs_in_tab_bar.md) and
+  [show_new_tab_button_in_tab_bar](config/lua/config/show_new_tab_button_in_tab_bar.md)
+  config options to customize the tab bar appearance.
+  [#2082](https://github.com/wez/wezterm/issues/2082)
 
 #### Fixed
 * Wayland: key repeat gets stuck after pressing two keys in quick succession.

docs/config/lua/config/show_new_tab_button_in_tab_bar.md

@@ -0,0 +1,28 @@
+# `show_new_tab_button_in_tab_bar = true`
+
+*Since: nightly builds only*
+
+When set to `true` (the default), the tab bar will display the new-tab button,
+which can be left-clicked to create a new tab, or right-clicked to display the
+[Launcher Menu](../../launch.md).
+
+When set to `false`, the new-tab button will not be drawn into the tab bar.
+
+This example turns off the tabs and new-tab button, leaving just the left and
+right status areas:
+
+```lua
+local wezterm = require 'wezterm'
+
+wezterm.on('update-right-status', function(window, pane)
+  window:set_left_status 'left'
+  window:set_right_status 'right'
+end)
+
+return {
+  use_fancy_tab_bar = false,
+  show_tabs_in_tab_bar = false,
+  show_new_tab_button_in_tab_bar = false,
+}
+```
+

docs/config/lua/config/show_tabs_in_tab_bar.md

@@ -0,0 +1,26 @@
+# `show_tabs_in_tab_bar = true`
+
+*Since: nightly builds only*
+
+When set to `true` (the default), the tab bar will display the tabs associated
+with the current window.
+
+When set to `false`, the tabs will not be drawn into the tab bar.
+
+This example turns off the tabs and new-tab button, leaving just the left and
+right status areas:
+
+```lua
+local wezterm = require 'wezterm'
+
+wezterm.on('update-right-status', function(window, pane)
+  window:set_left_status 'left'
+  window:set_right_status 'right'
+end)
+
+return {
+  use_fancy_tab_bar = false,
+  show_tabs_in_tab_bar = false,
+  show_new_tab_button_in_tab_bar = false,
+}
+```

wezterm-gui/src/tabbar.rs

@@ -226,22 +226,26 @@ impl TabBarState {
 
         let mut active_tab_no = 0;
 
-        let tab_titles: Vec<TitleText> = tab_info
-            .iter()
-            .map(|tab| {
-                if tab.is_active {
-                    active_tab_no = tab.tab_index;
-                }
-                compute_tab_title(
-                    tab,
-                    tab_info,
-                    pane_info,
-                    config,
-                    false,
-                    config.tab_max_width,
-                )
-            })
-            .collect();
+        let tab_titles: Vec<TitleText> = if config.show_tabs_in_tab_bar {
+            tab_info
+                .iter()
+                .map(|tab| {
+                    if tab.is_active {
+                        active_tab_no = tab.tab_index;
+                    }
+                    compute_tab_title(
+                        tab,
+                        tab_info,
+                        pane_info,
+                        config,
+                        false,
+                        config.tab_max_width,
+                    )
+                })
+                .collect()
+        } else {
+            vec![]
+        };
         let titles_len: usize = tab_titles.iter().map(|s| s.len).sum();
         let number_of_tabs = tab_titles.len();
 
@@ -334,7 +338,7 @@ impl TabBarState {
         }
 
         // New tab button
-        {
+        if config.show_new_tab_button_in_tab_bar {
             let hover = is_tab_hover(mouse_x, x, new_tab_hover.len());
 
             let new_tab_button = if hover { &new_tab_hover } else { &new_tab };