mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-25 13:58:15 -05:00
8ed2c92eb1
* emacs/guix-buffer.el (guix-define-groups, guix-define-entry-type) (guix-define-buffer-type): New macros. (guix-buffer-define-interface): Add parent groups for the generated custom groups. * emacs/guix-info.el: Use 'guix-define-buffer-type' to generate custom groups. * emacs/guix-list.el: Likewise. * emacs/guix-ui.el: Use 'guix-define-groups' to generate custom groups. (guix-ui-define-entry-type): New macro. * emacs/guix-ui-package.el: Use it. * emacs/guix-ui-generation.el: Use it.
482 lines
17 KiB
EmacsLisp
482 lines
17 KiB
EmacsLisp
;;; guix-info.el --- 'Info' buffer interface for displaying data -*- lexical-binding: t -*-
|
||
|
||
;; Copyright © 2014, 2015 Alex Kost <alezost@gmail.com>
|
||
;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
|
||
|
||
;; This file is part of GNU Guix.
|
||
|
||
;; GNU Guix is free software; you can redistribute it and/or modify
|
||
;; it under the terms of the GNU General Public License as published by
|
||
;; the Free Software Foundation, either version 3 of the License, or
|
||
;; (at your option) any later version.
|
||
|
||
;; GNU Guix is distributed in the hope that it will be useful,
|
||
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;; GNU General Public License for more details.
|
||
|
||
;; You should have received a copy of the GNU General Public License
|
||
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This file provides 'info' (help-like) buffer interface for displaying
|
||
;; an arbitrary data.
|
||
|
||
;;; Code:
|
||
|
||
(require 'guix-buffer)
|
||
(require 'guix-entry)
|
||
(require 'guix-utils)
|
||
|
||
(guix-define-buffer-type info)
|
||
|
||
(defface guix-info-heading
|
||
'((((type tty pc) (class color)) :weight bold)
|
||
(t :height 1.6 :weight bold :inherit variable-pitch))
|
||
"Face for headings."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-param-title
|
||
'((t :inherit font-lock-type-face))
|
||
"Face used for titles of parameters."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-file-path
|
||
'((t :inherit link))
|
||
"Face used for file paths."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-url
|
||
'((t :inherit link))
|
||
"Face used for URLs."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-time
|
||
'((t :inherit font-lock-constant-face))
|
||
"Face used for timestamps."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-action-button
|
||
'((((type x w32 ns) (class color))
|
||
:box (:line-width 2 :style released-button)
|
||
:background "lightgrey" :foreground "black")
|
||
(t :inherit button))
|
||
"Face used for action buttons."
|
||
:group 'guix-info-faces)
|
||
|
||
(defface guix-info-action-button-mouse
|
||
'((((type x w32 ns) (class color))
|
||
:box (:line-width 2 :style released-button)
|
||
:background "grey90" :foreground "black")
|
||
(t :inherit highlight))
|
||
"Mouse face used for action buttons."
|
||
:group 'guix-info-faces)
|
||
|
||
(defcustom guix-info-ignore-empty-values nil
|
||
"If non-nil, do not display parameters with nil values."
|
||
:type 'boolean
|
||
:group 'guix-info)
|
||
|
||
(defcustom guix-info-fill t
|
||
"If non-nil, fill string parameters to fit the window.
|
||
If nil, insert text parameters (like synopsis or description) in
|
||
a raw form."
|
||
:type 'boolean
|
||
:group 'guix-info)
|
||
|
||
(defvar guix-info-param-title-format "%-18s: "
|
||
"String used to format a title of a parameter.
|
||
It should be a '%s'-sequence. After inserting a title formatted
|
||
with this string, a value of the parameter is inserted.
|
||
This string is used by `guix-info-insert-title-format'.")
|
||
|
||
(defvar guix-info-multiline-prefix
|
||
(make-string (length (format guix-info-param-title-format " "))
|
||
?\s)
|
||
"String used to format multi-line parameter values.
|
||
If a value occupies more than one line, this string is inserted
|
||
in the beginning of each line after the first one.
|
||
This string is used by `guix-info-insert-value-format'.")
|
||
|
||
(defvar guix-info-indent 2
|
||
"Number of spaces used to indent various parts of inserted text.")
|
||
|
||
(defvar guix-info-delimiter "\n\f\n"
|
||
"String used to separate entries.")
|
||
|
||
|
||
;;; Wrappers for 'info' variables
|
||
|
||
(defvar guix-info-data nil
|
||
"Alist with 'info' data.
|
||
This alist is filled by `guix-info-define-interface' macro.")
|
||
|
||
(defun guix-info-value (entry-type symbol)
|
||
"Return SYMBOL's value for ENTRY-TYPE from `guix-info-data'."
|
||
(symbol-value (guix-assq-value guix-info-data entry-type symbol)))
|
||
|
||
(defun guix-info-param-title (entry-type param)
|
||
"Return a title of an ENTRY-TYPE parameter PARAM."
|
||
(guix-buffer-param-title 'info entry-type param))
|
||
|
||
(defun guix-info-format (entry-type)
|
||
"Return 'info' format for ENTRY-TYPE."
|
||
(guix-info-value entry-type 'format))
|
||
|
||
(defun guix-info-displayed-params (entry-type)
|
||
"Return a list of ENTRY-TYPE parameters that should be displayed."
|
||
(delq nil
|
||
(mapcar (lambda (spec)
|
||
(pcase spec
|
||
(`(,param . ,_) param)))
|
||
(guix-info-format entry-type))))
|
||
|
||
|
||
;;; Inserting entries
|
||
|
||
(defvar guix-info-title-aliases
|
||
'((format . guix-info-insert-title-format)
|
||
(simple . guix-info-insert-title-simple))
|
||
"Alist of aliases and functions to insert titles.")
|
||
|
||
(defvar guix-info-value-aliases
|
||
'((format . guix-info-insert-value-format)
|
||
(indent . guix-info-insert-value-indent)
|
||
(simple . guix-info-insert-value-simple)
|
||
(time . guix-info-insert-time))
|
||
"Alist of aliases and functions to insert values.")
|
||
|
||
(defun guix-info-title-function (fun-or-alias)
|
||
"Convert FUN-OR-ALIAS into a function to insert a title."
|
||
(or (guix-assq-value guix-info-title-aliases fun-or-alias)
|
||
fun-or-alias))
|
||
|
||
(defun guix-info-value-function (fun-or-alias)
|
||
"Convert FUN-OR-ALIAS into a function to insert a value."
|
||
(or (guix-assq-value guix-info-value-aliases fun-or-alias)
|
||
fun-or-alias))
|
||
|
||
(defun guix-info-title-method->function (method)
|
||
"Convert title METHOD into a function to insert a title."
|
||
(pcase method
|
||
((pred null) #'ignore)
|
||
((pred symbolp) (guix-info-title-function method))
|
||
(`(,fun-or-alias . ,rest-args)
|
||
(lambda (title)
|
||
(apply (guix-info-title-function fun-or-alias)
|
||
title rest-args)))
|
||
(_ (error "Unknown title method '%S'" method))))
|
||
|
||
(defun guix-info-value-method->function (method)
|
||
"Convert value METHOD into a function to insert a value."
|
||
(pcase method
|
||
((pred null) #'ignore)
|
||
((pred functionp) method)
|
||
(`(,fun-or-alias . ,rest-args)
|
||
(lambda (value _)
|
||
(apply (guix-info-value-function fun-or-alias)
|
||
value rest-args)))
|
||
(_ (error "Unknown value method '%S'" method))))
|
||
|
||
(defun guix-info-fill-column ()
|
||
"Return fill column for the current window."
|
||
(min (window-width) fill-column))
|
||
|
||
(defun guix-info-get-indent (&optional level)
|
||
"Return `guix-info-indent' \"multiplied\" by LEVEL spaces.
|
||
LEVEL is 1 by default."
|
||
(make-string (* guix-info-indent (or level 1)) ?\s))
|
||
|
||
(defun guix-info-insert-indent (&optional level)
|
||
"Insert `guix-info-indent' spaces LEVEL times (1 by default)."
|
||
(insert (guix-info-get-indent level)))
|
||
|
||
(defun guix-info-insert-entries (entries entry-type)
|
||
"Display ENTRY-TYPE ENTRIES in the current info buffer."
|
||
(guix-mapinsert (lambda (entry)
|
||
(guix-info-insert-entry entry entry-type))
|
||
entries
|
||
guix-info-delimiter))
|
||
|
||
(defun guix-info-insert-entry (entry entry-type &optional indent-level)
|
||
"Insert ENTRY of ENTRY-TYPE into the current info buffer.
|
||
If INDENT-LEVEL is non-nil, indent displayed data by this number
|
||
of `guix-info-indent' spaces."
|
||
(guix-with-indent (* (or indent-level 0)
|
||
guix-info-indent)
|
||
(dolist (spec (guix-info-format entry-type))
|
||
(guix-info-insert-entry-unit spec entry entry-type))))
|
||
|
||
(defun guix-info-insert-entry-unit (format-spec entry entry-type)
|
||
"Insert title and value of a PARAM at point.
|
||
ENTRY is alist with parameters and their values.
|
||
ENTRY-TYPE is a type of ENTRY."
|
||
(pcase format-spec
|
||
((pred functionp)
|
||
(funcall format-spec entry)
|
||
(insert "\n"))
|
||
(`(,param ,title-method ,value-method)
|
||
(let ((value (guix-entry-value entry param)))
|
||
(unless (and guix-info-ignore-empty-values (null value))
|
||
(let ((title (guix-info-param-title entry-type param))
|
||
(insert-title (guix-info-title-method->function title-method))
|
||
(insert-value (guix-info-value-method->function value-method)))
|
||
(funcall insert-title title)
|
||
(funcall insert-value value entry)
|
||
(insert "\n")))))
|
||
(_ (error "Unknown format specification '%S'" format-spec))))
|
||
|
||
(defun guix-info-insert-title-simple (title &optional face)
|
||
"Insert \"TITLE: \" string at point.
|
||
If FACE is nil, use `guix-info-param-title'."
|
||
(guix-format-insert title
|
||
(or face 'guix-info-param-title)
|
||
"%s: "))
|
||
|
||
(defun guix-info-insert-title-format (title &optional face)
|
||
"Insert TITLE using `guix-info-param-title-format' at point.
|
||
If FACE is nil, use `guix-info-param-title'."
|
||
(guix-format-insert title
|
||
(or face 'guix-info-param-title)
|
||
guix-info-param-title-format))
|
||
|
||
(defun guix-info-insert-value-simple (value &optional button-or-face indent)
|
||
"Format and insert parameter VALUE at point.
|
||
|
||
VALUE may be split into several short lines to fit the current
|
||
window, depending on `guix-info-fill', and each line is indented
|
||
with INDENT number of spaces.
|
||
|
||
If BUTTON-OR-FACE is a button type symbol, transform VALUE into
|
||
this (these) button(s) and insert each one on a new line. If it
|
||
is a face symbol, propertize inserted line(s) with this face."
|
||
(or indent (setq indent 0))
|
||
(guix-with-indent indent
|
||
(let* ((button? (guix-button-type? button-or-face))
|
||
(face (unless button? button-or-face))
|
||
(fill-col (unless (or button?
|
||
(and (stringp value)
|
||
(not guix-info-fill)))
|
||
(- (guix-info-fill-column) indent)))
|
||
(value (if (and value button?)
|
||
(guix-buttonize value button-or-face "\n")
|
||
value)))
|
||
(guix-split-insert value face fill-col "\n"))))
|
||
|
||
(defun guix-info-insert-value-indent (value &optional button-or-face)
|
||
"Format and insert parameter VALUE at point.
|
||
|
||
This function is intended to be called after inserting a title
|
||
with `guix-info-insert-title-simple'.
|
||
|
||
VALUE may be split into several short lines to fit the current
|
||
window, depending on `guix-info-fill', and each line is indented
|
||
with `guix-info-indent'.
|
||
|
||
For the meaning of BUTTON-OR-FACE, see `guix-info-insert-value-simple'."
|
||
(when value (insert "\n"))
|
||
(guix-info-insert-value-simple value button-or-face guix-info-indent))
|
||
|
||
(defun guix-info-insert-value-format (value &optional button-or-face
|
||
&rest button-properties)
|
||
"Format and insert parameter VALUE at point.
|
||
|
||
This function is intended to be called after inserting a title
|
||
with `guix-info-insert-title-format'.
|
||
|
||
VALUE may be split into several short lines to fit the current
|
||
window, depending on `guix-info-fill' and
|
||
`guix-info-multiline-prefix'. If VALUE is a list, its elements
|
||
will be separated with `guix-list-separator'.
|
||
|
||
If BUTTON-OR-FACE is a button type symbol, transform VALUE into
|
||
this (these) button(s). If it is a face symbol, propertize
|
||
inserted line(s) with this face.
|
||
|
||
BUTTON-PROPERTIES are passed to `guix-buttonize' (only if
|
||
BUTTON-OR-FACE is a button type)."
|
||
(let* ((button? (guix-button-type? button-or-face))
|
||
(face (unless button? button-or-face))
|
||
(fill-col (when (or button?
|
||
guix-info-fill
|
||
(not (stringp value)))
|
||
(- (guix-info-fill-column)
|
||
(length guix-info-multiline-prefix))))
|
||
(value (if (and value button?)
|
||
(apply #'guix-buttonize
|
||
value button-or-face guix-list-separator
|
||
button-properties)
|
||
value)))
|
||
(guix-split-insert value face fill-col
|
||
(concat "\n" guix-info-multiline-prefix))))
|
||
|
||
(defun guix-info-insert-time (seconds &optional face)
|
||
"Insert formatted time string using SECONDS at point."
|
||
(guix-format-insert (guix-get-time-string seconds)
|
||
(or face 'guix-info-time)))
|
||
|
||
|
||
;;; Buttons
|
||
|
||
(defvar guix-info-button-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map button-map)
|
||
(define-key map (kbd "c") 'guix-info-button-copy-label)
|
||
map)
|
||
"Keymap for buttons in info buffers.")
|
||
|
||
(define-button-type 'guix
|
||
'keymap guix-info-button-map
|
||
'follow-link t)
|
||
|
||
(define-button-type 'guix-action
|
||
:supertype 'guix
|
||
'face 'guix-info-action-button
|
||
'mouse-face 'guix-info-action-button-mouse)
|
||
|
||
(define-button-type 'guix-file
|
||
:supertype 'guix
|
||
'face 'guix-info-file-path
|
||
'help-echo "Find file"
|
||
'action (lambda (btn)
|
||
(guix-find-file (button-label btn))))
|
||
|
||
(define-button-type 'guix-url
|
||
:supertype 'guix
|
||
'face 'guix-info-url
|
||
'help-echo "Browse URL"
|
||
'action (lambda (btn)
|
||
(browse-url (button-label btn))))
|
||
|
||
(defun guix-info-button-copy-label (&optional pos)
|
||
"Copy a label of the button at POS into kill ring.
|
||
If POS is nil, use the current point position."
|
||
(interactive)
|
||
(let ((button (button-at (or pos (point)))))
|
||
(when button
|
||
(guix-copy-as-kill (button-label button)))))
|
||
|
||
(defun guix-info-insert-action-button (label action &optional message
|
||
&rest properties)
|
||
"Make action button with LABEL and insert it at point.
|
||
ACTION is a function called when the button is pressed. It
|
||
should accept button as the argument.
|
||
MESSAGE is a button message.
|
||
See `insert-text-button' for the meaning of PROPERTIES."
|
||
(apply #'guix-insert-button
|
||
label 'guix-action
|
||
'action action
|
||
'help-echo message
|
||
properties))
|
||
|
||
|
||
;;; Major mode and interface definer
|
||
|
||
(defvar guix-info-mode-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent
|
||
map (make-composed-keymap (list guix-buffer-map button-buffer-map)
|
||
special-mode-map))
|
||
map)
|
||
"Keymap for `guix-info-mode' buffers.")
|
||
|
||
(define-derived-mode guix-info-mode special-mode "Guix-Info"
|
||
"Parent mode for displaying data in 'info' form."
|
||
(setq-local revert-buffer-function 'guix-buffer-revert))
|
||
|
||
(defun guix-info-mode-initialize ()
|
||
"Set up the current 'info' buffer."
|
||
;; Without this, syntactic fontification is performed, and it may
|
||
;; break our highlighting. For example, description of "emacs-typo"
|
||
;; package contains a single " (double-quote) character, so the
|
||
;; default syntactic fontification highlights the rest text after it
|
||
;; as a string. See (info "(elisp) Font Lock Basics") for details.
|
||
(setq font-lock-defaults '(nil t)))
|
||
|
||
(defmacro guix-info-define-interface (entry-type &rest args)
|
||
"Define 'info' interface for displaying ENTRY-TYPE entries.
|
||
Remaining arguments (ARGS) should have a form [KEYWORD VALUE] ...
|
||
|
||
Required keywords:
|
||
|
||
- `:format' - default value of the generated
|
||
`guix-ENTRY-TYPE-info-format' variable.
|
||
|
||
The rest keyword arguments are passed to
|
||
`guix-buffer-define-interface' macro."
|
||
(declare (indent 1))
|
||
(let* ((entry-type-str (symbol-name entry-type))
|
||
(prefix (concat "guix-" entry-type-str "-info"))
|
||
(group (intern prefix))
|
||
(format-var (intern (concat prefix "-format"))))
|
||
(guix-keyword-args-let args
|
||
((show-entries-val :show-entries-function)
|
||
(format-val :format))
|
||
`(progn
|
||
(defcustom ,format-var ,format-val
|
||
,(format "\
|
||
List of methods for inserting '%s' entry.
|
||
Each METHOD should be either a function or should have the
|
||
following form:
|
||
|
||
(PARAM INSERT-TITLE INSERT-VALUE)
|
||
|
||
If METHOD is a function, it is called with an entry as argument.
|
||
|
||
PARAM is a name of '%s' entry parameter.
|
||
|
||
INSERT-TITLE may be either a symbol or a list. If it is a
|
||
symbol, it should be a function or an alias from
|
||
`guix-info-title-aliases', in which case it is called with title
|
||
as argument. If it is a list, it should have a
|
||
form (FUN-OR-ALIAS [ARGS ...]), in which case FUN-OR-ALIAS is
|
||
called with title and ARGS as arguments.
|
||
|
||
INSERT-VALUE may be either a symbol or a list. If it is a
|
||
symbol, it should be a function or an alias from
|
||
`guix-info-value-aliases', in which case it is called with value
|
||
and entry as arguments. If it is a list, it should have a
|
||
form (FUN-OR-ALIAS [ARGS ...]), in which case FUN-OR-ALIAS is
|
||
called with value and ARGS as arguments.
|
||
|
||
Parameters are inserted in the same order as defined by this list.
|
||
After calling each METHOD, a new line is inserted."
|
||
entry-type-str entry-type-str)
|
||
:type 'sexp
|
||
:group ',group)
|
||
|
||
(guix-alist-put!
|
||
'((format . ,format-var))
|
||
'guix-info-data ',entry-type)
|
||
|
||
,(if show-entries-val
|
||
`(guix-buffer-define-interface info ,entry-type
|
||
:show-entries-function ,show-entries-val
|
||
,@%foreign-args)
|
||
|
||
(let ((insert-fun (intern (concat prefix "-insert-entries"))))
|
||
`(progn
|
||
(defun ,insert-fun (entries)
|
||
,(format "\
|
||
Print '%s' ENTRIES in the current 'info' buffer."
|
||
entry-type-str)
|
||
(guix-info-insert-entries entries ',entry-type))
|
||
|
||
(guix-buffer-define-interface info ,entry-type
|
||
:insert-entries-function ',insert-fun
|
||
:mode-init-function 'guix-info-mode-initialize
|
||
,@%foreign-args))))))))
|
||
|
||
|
||
(defvar guix-info-font-lock-keywords
|
||
(eval-when-compile
|
||
`((,(rx "(" (group "guix-info-define-interface")
|
||
symbol-end)
|
||
. 1))))
|
||
|
||
(font-lock-add-keywords 'emacs-lisp-mode guix-info-font-lock-keywords)
|
||
|
||
(provide 'guix-info)
|
||
|
||
;;; guix-info.el ends here
|