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Diffstat (limited to 'lisp/mastodon-widget.el')
| -rw-r--r-- | lisp/mastodon-widget.el | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/lisp/mastodon-widget.el b/lisp/mastodon-widget.el new file mode 100644 index 0000000..0c1026c --- /dev/null +++ b/lisp/mastodon-widget.el @@ -0,0 +1,98 @@ +;;; mastodon-widget.el --- Widget utilities -*- lexical-binding: t -*- + +;; Copyright (C) 2020-2024 Marty Hiatt +;; Author: Marty Hiatt <mousebot@disroot.org> +;; Maintainer: Marty Hiatt <mousebot@disroot.org> +;; Homepage: https://codeberg.org/martianh/mastodon.el + +;; This file is not part of GNU Emacs. + +;; This file is part of mastodon.el. + +;; mastodon.el 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. + +;; mastodon.el 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 mastodon.el. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: + +;; some widget utilities for mastodon.el + +;;; Code: + +(require 'cl-lib) + +(defvar mastodon-widget-keymap + (let ((map (make-sparse-keymap))) + (define-key map [down-mouse-2] 'widget-button-click) + (define-key map [down-mouse-1] 'widget-button-click) + (define-key map [touchscreen-begin] 'widget-button-click) + ;; The following definition needs to avoid using escape sequences that + ;; might get converted to ^M when building loaddefs.el + (define-key map [(control ?m)] 'widget-button-press) + map) + "Keymap containing useful binding for buffers containing widgets. +Recommended as a parent keymap for modes using widgets. +Note that such modes will need to require wid-edit.") + +(defface mastodon-widget-face + '((t :inherit font-lock-function-name-face :weight bold :underline t)) + "Face for widgets.") + +(defun mastodon-widget--return-item-widgets (list) + "Return a list of item widgets for each item, a string, in LIST." + (cl-loop for x in list + collect `(choice-item :value ,x :format "%[%v%] "))) + +(defun mastodon-widget--format (str &optional padding) + "Return a widget format string for STR, its name. +PADDING is an integer, for how much right-side padding to add." + (concat "%[" (propertize str + 'face 'mastodon-widget-face + 'mastodon-tab-stop t) + "%]: %v" + (make-string padding ? ))) + +(defun mastodon-widget--create (kind type value notify-fun) + "Return a widget of KIND, with TYPE elements, and default VALUE. +KIND is a string, either Listing, Sort, Items, or Inbox, and will +be used for the widget's tag. +VALUE is a string, a member of TYPE. +NOTIFY-FUN is the widget's notify function." + (let* ((val-length (length (if (symbolp value) + (symbol-name value) + value))) + (type-list (symbol-value type)) + (longest (apply #'max + (mapcar #'length + (if (symbolp (car type-list)) + (mapcar #'symbol-name type-list) + type-list)))) + (padding (- longest val-length))) + (if (not (member value type-list)) + (user-error "%s is not a member of %s" value type-list) + (widget-create + 'menu-choice + :tag kind + :value value + :args (mastodon-widget--return-item-widgets type-list) + :help-echo (format "Select a %s kind" kind) + :format (mastodon-widget--format kind padding) + :notify notify-fun + ;; eg format of notify-fun: + ;; (lambda (widget &rest ignore) + ;; (let ((value (widget-value widget)) + ;; (tag (widget-get widget :tag))) + ;; (notify-fun value))) + :keymap mastodon-widget-keymap)))) + +(provide 'mastodon-widget) +;;; mastodon-widget.el ends here |