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;;; mm-modeline.el --- Pluggable modeline components -*- lexical-binding: t; -*-
(defmacro mm-modeline--define-component (name &rest forms)
(declare (indent 1))
`(progn
(defface ,(intern (format "%s-face" name))
'((t))
,(format "Face for the `%s' component." name))
(defvar-local ,name '(:eval (or ,(macroexp-progn forms) "")))
(put ',name 'risky-local-variable t)))
^L
;;; Support Icons
(use-package all-the-icons
:ensure t
:init
(defvar mm-all-the-icons-cookie
(expand-file-name ".all-the-icons-installed-p" mm-cache-directory))
(unless (file-exists-p mm-all-the-icons-cookie)
(all-the-icons-install-fonts)
(make-empty-file mm-all-the-icons-cookie :parents))
(set-char-table-range char-width-table #xE907 2))
^L
;;; Modeline Components
(mm-modeline--define-component mm-modeline-readonly
(when buffer-read-only
(propertize " READONLY" 'face 'mm-modeline-readonly-face)))
(mm-modeline--define-component mm-modeline-buffer-name
(propertize "%b" 'face 'mm-modeline-buffer-name-face))
(mm-modeline--define-component mm-modeline-buffer-modified
(when (and (buffer-modified-p)
(buffer-file-name))
(propertize " (modified)" 'face 'mm-modeline-buffer-modified-face)))
(defconst mm-modeline-mode-acronyms
'("css" "csv" "gsp" "html" "json" "mhtml" "scss" "toml" "tsv")
"TODO")
(defconst mm-modeline-remap-alist
'(("Js" . "JavaScript")
("Ts Mode" . "Tree-Sitter Mode")
("Gmake" . "GMake")
("Imake" . "IMake")
("Bsdmake" . "BSD Make"))
"TODO")
(mm-modeline--define-component mm-modeline-major-mode-name
(propertize
(let ((string (thread-last
major-mode
(symbol-name)
(capitalize)
(string-replace "-" " ")))
(case-fold-search nil))
;; TODO: Do I need ‘save-match-data’
(save-match-data
(dolist (pair mm-modeline-remap-alist)
(setq string
(replace-regexp-in-string
(format "\\<%s\\>" (regexp-quote (car pair)))
(cdr pair) string)))
(setq case-fold-search t)
(if (string-match (regexp-opt mm-modeline-mode-acronyms 'words) string)
(concat
(substring string 0 (match-beginning 0))
(upcase (substring string (match-beginning 0) (match-end 0)))
(substring string (match-end 0) (length string)))
string)))
'face 'mm-modeline-major-mode-name-face))
(mm-modeline--define-component mm-modeline-major-mode-symbol
(propertize
(cond
((derived-mode-p 'comint-mode) "$ ")
((derived-mode-p 'conf-mode) "# ")
((derived-mode-p 'prog-mode) "λ ")
((derived-mode-p 'text-mode) "§ ")
(t ""))
'face 'mm-modeline-major-mode-symbol-face))
(mm-modeline--define-component mm-modeline-narrow
(when (buffer-narrowed-p)
(propertize
" Narrow "
'face 'mm-modeline-narrow-face)))
(mm-modeline--define-component mm-modeline-git-branch
(when-let ((branch (car (and (featurep 'vc-git)
(vc-git-branches)))))
(concat
(propertize "\uE907" 'display '(raise 0))
" "
(propertize branch 'face 'mm-modeline-git-branch-face)
" │ ")))
^L
;;; Padding Between Left and Right
(mm-modeline--define-component mm-modeline-left-right-padding
(let ((length (string-width (format-mode-line mm-modeline-right))))
(propertize " " 'display `(space :align-to (- right ,length)))))
^L
;;; Configure Modeline
(setopt mode-line-format-right-align 'right-margin)
(setq
mm-modeline-left (list mm-modeline-narrow
mm-modeline-readonly
" "
mm-modeline-buffer-name
mm-modeline-buffer-modified
" │ "
mm-modeline-major-mode-symbol
mm-modeline-major-mode-name
mm-modeline-left-right-padding
mode-line-end-spaces)
mm-modeline-right (list mm-modeline-git-branch
"%l:%c "))
(setq-default
mode-line-format
(list mm-modeline-left mm-modeline-left-right-padding mm-modeline-right))
(provide 'mm-modeline)
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