spacemacs/core/core-spacemacs-buffer.el
syl20bnr 5f7579867a New update method
- backup the packages to be updated
- then delete them
- the user restart emacs and spacemacs will install the last version

Fixes some update errors related to byte-compilation like the one
which affected the powerline (void variable left)

This commit also adds some page break for clarity
2015-04-02 22:23:16 -04:00

229 lines
9.2 KiB
EmacsLisp
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;;; core-spacemacs-buffer.el --- Spacemacs Core File
;;
;; Copyright (c) 2012-2014 Sylvain Benner
;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
;;
;; Author: Sylvain Benner <sylvain.benner@gmail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3
(defconst spacemacs-buffer-name "*spacemacs*"
"The name of the spacemacs buffer.")
(defconst spacemacs--banner-length 75
"Width of a banner.")
(defun spacemacs//insert-banner-and-buttons ()
"Choose a banner accordingly to `dotspacemacs-startup-banner'and insert it
in spacemacs buffer along whith quick buttons underneath.
Easter egg:
Doge special text banner can be reachable via `999', `doge' or `random*'.
`random' ignore special banners whereas `random*' does not."
(let ((banner (spacemacs//choose-banner))
(buffer-read-only nil))
(when banner
(spacemacs/message (format "Banner: %s" banner))
(if (string-match "\\.png\\'" banner)
(spacemacs//insert-image-banner banner)
(insert-file-contents banner))
(spacemacs//inject-version)
(spacemacs/insert-buttons)
(spacemacs//redisplay))))
(defun spacemacs//choose-banner ()
"Return the full path of a banner based on the dotfile value."
(cond
((eq 'official dotspacemacs-startup-banner)
(if (and (display-graphic-p) (image-type-available-p 'png))
spacemacs-banner-official-png
(spacemacs//get-banner-path 1)))
((eq 'random dotspacemacs-startup-banner)
(spacemacs//choose-random-text-banner))
((eq 'random* dotspacemacs-startup-banner)
(spacemacs//choose-random-text-banner t))
((eq 'doge dotspacemacs-startup-banner)
(spacemacs//get-banner-path 999))
((integerp dotspacemacs-startup-banner)
(spacemacs//get-banner-path dotspacemacs-startup-banner))
((and dotspacemacs-startup-banner
(string-match "\\.png\\'" dotspacemacs-startup-banner))
(if (and (display-graphic-p) (image-type-available-p 'png))
(if (file-exists-p dotspacemacs-startup-banner)
dotspacemacs-startup-banner
(spacemacs/message (format "Warning: could not find banner %s"
dotspacemacs-startup-banner))
(spacemacs//get-banner-path 1))
(spacemacs//get-banner-path 1)))))
(defun spacemacs//choose-random-text-banner (&optional all)
"Return the full path of a banner chosen randomly.
If ALL is non-nil then truly all banners can be selected."
(let* ((files (directory-files spacemacs-banner-directory t))
(count (length files))
;; -2 then +2 to remove `.' and `..'
(choice (+ 2 (random (- count (if all 2 3))))))
(nth choice files)))
(defun spacemacs//get-banner-path (index)
"Return the full path to banner with index INDEX."
(concat spacemacs-banner-directory (format "%03d-banner.txt" index)))
(defun spacemacs//insert-image-banner (banner)
"Display an image banner."
(when (file-exists-p banner)
(let* ((spec (create-image banner))
(size (image-size spec))
(width (car size))
(left-margin (floor (- spacemacs--banner-length width) 2)))
(beginning-of-buffer)
(insert "\n")
(insert (make-string (- left-margin 1) ?\ ))
(insert-image spec)
(insert "\n\n")
(insert " [S P A C E M A C S]\n\n"))))
(defun spacemacs//inject-version ()
"Inject the current version of spacemacs in the first line of the
buffer, right justified."
(save-excursion
(beginning-of-buffer)
(let* ((maxcol spacemacs--banner-length)
(injected (format "(%s)" spacemacs-version))
(pos (- maxcol (length injected)))
(buffer-read-only nil))
;; fill the first line with spaces if required
(when (< (line-end-position) maxcol)
(end-of-line)
(insert-char ?\s (- maxcol (line-end-position))))
(goto-char pos)
(delete-char (length injected))
(insert injected))))
(defun spacemacs/set-mode-line (format)
"Set mode-line format for spacemacs buffer."
(with-current-buffer (get-buffer-create "*spacemacs*")
(setq mode-line-format format)))
(defun spacemacs/message (msg &rest args)
"Display MSG in message prepended with '(Spacemacs)'."
(message "(Spacemacs) %s" (apply 'format msg args)))
(defun spacemacs/insert-page-break ()
"Insert a page break line in spacemacs buffer."
(spacemacs/append-to-buffer "\n \n\n"))
(defun spacemacs/append-to-buffer (msg &optional messagebuf)
"Append MSG to spacemacs buffer. If MESSAGEBUF is not nil then MSG is
also written in message buffer."
(with-current-buffer (get-buffer-create "*spacemacs*")
(goto-char (point-max))
(let ((buffer-read-only nil))
(insert msg)
(if messagebuf (message "(Spacemacs) %s" msg)))
(spacemacs/set-mode-line "")))
(defun spacemacs/replace-last-line-of-buffer (msg &optional messagebuf)
"Replace the last line of the spacemacs buffer with MSG. If MESSAGEBUF is
not nil then MSG is also written in message buffer."
(with-current-buffer (get-buffer-create "*spacemacs*")
(goto-char (point-max))
(let ((buffer-read-only nil))
(delete-region (line-beginning-position) (point-max))
(insert msg)
(if messagebuf (message "(Spacemacs) %s" msg)))
(spacemacs/set-mode-line "")))
(defun spacemacs/loading-animation ()
"Display the progress bar by chunk of size `spacemacs--loading-dots-chunk-threshold'."
(when dotspacemacs-loading-progress-bar
(setq spacemacs-loading-counter (1+ spacemacs-loading-counter))
(when (>= spacemacs-loading-counter spacemacs-loading-dots-chunk-threshold)
(setq spacemacs-loading-counter 0)
(setq spacemacs-loading-string
(concat spacemacs-loading-string
(make-string spacemacs-loading-dots-chunk-size
spacemacs-loading-char)))
(spacemacs/set-mode-line spacemacs-loading-string)
(spacemacs//redisplay))))
(defun spacemacs/insert-buttons ()
(goto-char (point-max))
(insert " ")
(insert-button "[Homepage]" 'action
(lambda (b) (browse-url "https://github.com/syl20bnr/spacemacs"))
'follow-link t 'help-echo "Open the Spacemacs Github page in your browser.")
(insert " ")
(insert-button "[Documentation]" 'action
(lambda (b) (browse-url "https://github.com/syl20bnr/spacemacs/blob/master/doc/DOCUMENTATION.md"))
'follow-link t 'help-echo "Open the Spacemacs documentation in your browser.")
(insert " ")
(insert-button "[Gitter Chat]" 'action
(lambda (b) (browse-url "https://gitter.im/syl20bnr/spacemacs"))
'follow-link t 'help-echo "Ask questions and chat with fellow users in our chat room.")
(insert " ")
(insert-button "[Update]" 'action
(lambda (b) (configuration-layer/update-packages))
'follow-link t 'help-echo "Update all ELPA packages to the latest versions.")
(insert " ")
(insert-button "[Rollback]" 'action
(lambda (b) (call-interactively 'configuration-layer/rollback))
'follow-link t 'help-echo "Rollback ELPA package upgrades if something got borked.")
(insert "\n")
(let ((button-title "[Search in Spacemacs]"))
; Compute the correct number of spaces to center the button.
(dotimes (i (/ (- spacemacs--banner-length (string-width button-title) 1) 2)) (insert " "))
(insert-button button-title 'action
(lambda (b) (call-interactively 'helm-spacemacs)) 'follow-link t
'help-echo "Find Spacemacs package and layer configs using helm-spacemacs."))
(insert "\n\n")
)
(defun spacemacs//insert-file-list (list-display-name list)
(when (car list)
(insert list-display-name)
(mapc (lambda (el)
(insert "\n ")
(insert-button el
'action `(lambda (b) (find-file-existing ,el))
'follow-link t))
list)))
(defun spacemacs/insert-startupify-lists ()
(interactive)
(with-current-buffer (get-buffer-create "*spacemacs*")
(let ((buffer-read-only nil)
(list-separator "\n\n"))
(goto-char (point-max))
(page-break-lines-mode)
(spacemacs/insert-page-break)
(mapc (lambda (el)
(cond
((eq el 'recents)
(recentf-mode)
(when (spacemacs//insert-file-list " Recent Files:" (recentf-elements 5))
(insert list-separator)))
((eq el 'bookmarks)
(helm-mode)
(when (spacemacs//insert-file-list " Bookmarks:" (bookmark-all-names))
(insert list-separator)))
((eq el 'projects)
(projectile-mode)
(when (spacemacs//insert-file-list " Projects:" (projectile-relevant-known-projects))
(insert list-separator))))) dotspacemacs-startup-lists))))
(defun spacemacs/goto-link-line ()
"Move the point to the beginning of the link line."
(interactive)
(when (and dotspacemacs-startup-banner
(not configuration-layer-error-count))
(with-current-buffer spacemacs-buffer-name
(goto-char (point-min))
(re-search-forward "Homepage")
(beginning-of-line))))
(provide 'core-spacemacs-buffer)