ui/tabbar: rewrite to use centaur-tabs

Plus some modifications to make tabs truly window-local, like they are
in any tabbed modern editor.

modules/ui/tabbar/autoload.el

@@ -0,0 +1,103 @@
+;;; ui/tabbar/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +tabbar-buffer-predicate (buffer)
+  "TODO"
+  (or (memq buffer (window-parameter nil 'tabbar-buffers))
+      (eq buffer (doom-fallback-buffer))))
+
+;;;###autoload
+(defun +tabbar-window-tab-list ()
+  (+tabbar-window-buffer-list))
+
+;;;###autoload
+(defun +tabbar-window-buffer-list ()
+  (cl-delete-if-not #'buffer-live-p (window-parameter nil 'tabbar-buffers)))
+
+;;;###autoload
+(defun +tabbar-buffer-groups ()
+  (list
+   (cond ((or (string-equal "*" (substring (buffer-name) 0 1))
+              (memq major-mode '(magit-process-mode
+                                 magit-status-mode
+                                 magit-diff-mode
+                                 magit-log-mode
+                                 magit-file-mode
+                                 magit-blob-mode
+                                 magit-blame-mode
+                                 )))
+          "Emacs")
+         ((derived-mode-p 'eshell-mode)
+          "EShell")
+         ((derived-mode-p 'dired-mode)
+          "Dired")
+         ((centaur-tabs-get-group-name (current-buffer))))))
+
+
+;;
+;;; Commands
+
+;;;###autoload
+(defun +tabbar/close-tab-or-window ()
+  "TODO"
+  (interactive)
+  (call-interactively
+   (cond ((cdr (window-parameter nil 'tabbar-buffers))
+          #'kill-current-buffer)
+         ((fboundp '+workspace/close-window-or-workspace)
+          #'+workspace/close-window-or-workspace)
+         (#'delete-window))))
+
+
+;;
+;;; Advice
+
+;;;###autoload
+(defun +tabbar*kill-current-buffer (&rest _)
+  (+tabbar|remove-buffer))
+
+;;;###autoload
+(defun +tabbar*bury-buffer (orig-fn &rest args)
+  (if centaur-tabs-mode
+      (let ((b (current-buffer)))
+        (apply orig-fn args)
+        (unless (eq b (current-buffer))
+          (with-current-buffer b
+            (+tabbar|remove-buffer))))
+    (apply orig-fn args)))
+
+;;;###autoload
+(defun +tabbar*kill-tab-maybe (tab)
+  (let ((buffer (centaur-tabs-tab-value tab)))
+    (with-current-buffer buffer
+      ;; `kill-current-buffer' is advised not to kill buffers visible in another
+      ;; window, so it behaves better than `kill-buffer'.
+      (kill-current-buffer))
+    (centaur-tabs-display-update)))
+
+
+;;
+;;; Hooks
+
+;;;###autoload
+(defun +tabbar|add-buffer ()
+  (when (and centaur-tabs-mode
+             (doom-real-buffer-p (current-buffer)))
+    (let* ((this-buf (current-buffer))
+           (buffers (window-parameter nil 'tabbar-buffers)))
+      (cl-pushnew this-buf buffers)
+      (add-hook 'kill-buffer-hook #'+tabbar|remove-buffer nil t)
+      (set-window-parameter nil 'tabbar-buffers buffers))))
+
+;;;###autoload
+(defun +tabbar|remove-buffer ()
+  (when centaur-tabs-mode
+    (set-window-parameter
+     nil
+     'tabbar-buffers (delete (current-buffer) (window-parameter nil 'tabbar-buffers)))))
+
+;;;###autoload
+(defun +tabbar|new-window ()
+  (when centaur-tabs-mode
+    (unless (window-parameter nil 'tabbar-buffers)
+      (+tabbar|add-buffer))))