├── LICENSE ├── README.md ├── screenshot.png └── side-hustle.el /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Side Hustle 2 | =========== 3 | 4 | [![MELPA Stable](https://stable.melpa.org/packages/side-hustle-badge.svg)][1] 5 | [![MELPA](https://melpa.org/packages/side-hustle-badge.svg)][2] 6 | 7 | Hustle through a buffer's Imenu in a side window in GNU Emacs. 8 | 9 | ![screenshot](screenshot.png) 10 | 11 | Side Hustle spawns a side window linked to the current buffer, which allows 12 | working with multiple buffers simultaneously. 13 | 14 | See . 15 | 16 | 17 | Installation 18 | ------------ 19 | 20 | The latest stable release of Side Hustle is available via [MELPA-stable][1]. 21 | First, add MELPA-stable to your package archives: 22 | 23 | M-x customize-option RET package-archives RET 24 | 25 | Insert an entry named `melpa-stable` with URL: 26 | `https://stable.melpa.org/packages/` 27 | 28 | You can then find the latest stable version of `side-hustle` in the list 29 | returned by: 30 | 31 | M-x list-packages RET 32 | 33 | If you prefer the latest but perhaps unstable version, do the above using 34 | [MELPA][2]. 35 | 36 | Then add a key binding to your init file: 37 | 38 | (define-key (current-global-map) (kbd "M-s l") #'side-hustle-toggle) 39 | 40 | 41 | Bugs and Feature Requests 42 | ------------------------- 43 | 44 | Send me an email (address in the package header). For bugs, please 45 | ensure you can reproduce with: 46 | 47 | $ emacs -Q -l side-hustle.el 48 | 49 | Known issues are tracked with `FIXME` comments in the source. 50 | 51 | 52 | Alternatives 53 | ------------ 54 | 55 | Side Hustle takes inspiration primarily from 56 | [imenu-list](https://github.com/bmag/imenu-list). 57 | 58 | 59 | [1]: https://stable.melpa.org/#/side-hustle 60 | [2]: https://melpa.org/#/side-hustle 61 | -------------------------------------------------------------------------------- /screenshot.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnkn/side-hustle/94450b58cec1b809afe08d0754a6662839efbc9d/screenshot.png -------------------------------------------------------------------------------- /side-hustle.el: -------------------------------------------------------------------------------- 1 | ;;; side-hustle.el --- Hustle through Imenu in a side window -*- lexical-binding: t; -*- 2 | 3 | ;; Copyright (c) 2021-2024 Paul W. Rankin 4 | 5 | ;; Author: Paul W. Rankin 6 | ;; Keywords: convenience 7 | ;; Version: 0.3.0 8 | ;; Package-Requires: ((emacs "24.4") (seq "2.20")) 9 | ;; URL: https://github.com/rnkn/side-hustle 10 | 11 | ;; This program is free software; you can redistribute it and/or modify 12 | ;; it under the terms of the GNU General Public License as published by 13 | ;; the Free Software Foundation, either version 3 of the License, or 14 | ;; (at your option) any later version. 15 | 16 | ;; This program is distributed in the hope that it will be useful, 17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 | ;; GNU General Public License for more details. 20 | 21 | ;; You should have received a copy of the GNU General Public License 22 | ;; along with this program. If not, see . 23 | 24 | ;;; Commentary: 25 | 26 | ;; Side Hustle 27 | ;; =========== 28 | 29 | ;; Hustle through a buffer's Imenu in a side window in GNU Emacs. 30 | 31 | ;; Side Hustle spawns a side window linked to the current buffer, which allows 32 | ;; working with multiple buffers simultaneously. 33 | 34 | 35 | ;; Installation 36 | ;; ------------ 37 | 38 | ;; The latest stable release of Side Hustle is available via [MELPA-stable][1]. 39 | ;; First, add MELPA-stable to your package archives: 40 | 41 | ;; M-x customize-option RET package-archives RET 42 | 43 | ;; Insert an entry named melpa-stable with URL: 44 | ;; https://stable.melpa.org/packages/ 45 | 46 | ;; You can then find the latest stable version of side-hustle in the list 47 | ;; returned by: 48 | 49 | ;; M-x list-packages RET 50 | 51 | ;; If you prefer the latest but perhaps unstable version, do the above using 52 | ;; [MELPA][2]. 53 | 54 | ;; Then add a key binding to your init file: 55 | 56 | ;; (define-key (current-global-map) (kbd "M-s l") #'side-hustle-toggle) 57 | 58 | 59 | ;; Bugs and Feature Requests 60 | ;; ------------------------- 61 | 62 | ;; Send me an email (address in the package header). For bugs, please 63 | ;; ensure you can reproduce with: 64 | 65 | ;; $ emacs -Q -l side-hustle.el 66 | 67 | ;; Known issues are tracked with FIXME comments in the source. 68 | 69 | 70 | ;; Alternatives 71 | ;; ------------ 72 | 73 | ;; Side Hustle takes inspiration primarily from 74 | ;; [imenu-list](https://github.com/bmag/imenu-list). 75 | 76 | 77 | ;; [1]: https://stable.melpa.org/#/side-hustle 78 | ;; [2]: https://melpa.org/#/side-hustle 79 | 80 | ;;; Code: 81 | 82 | (require 'imenu) 83 | 84 | (defgroup side-hustle nil 85 | "Navigate Imenu in a side window." 86 | :group 'convenience 87 | :group 'matching 88 | :link '(info-link "(emacs) Imenu")) 89 | 90 | 91 | ;;; Internal Variables ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 92 | 93 | (defvar-local side-hustle--source-buffer nil) 94 | (defvar-local side-hustle--hidden nil) 95 | 96 | 97 | ;;; User Options ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 98 | 99 | (defcustom side-hustle-display-alist 100 | '((side . left) 101 | (slot . 0) 102 | (window-width . 40)) 103 | "Alist used to display side-hustle buffer." 104 | :type 'alist 105 | :group 'side-hustle 106 | :link '(info-link "(elisp) Buffer Display Action Alists")) 107 | 108 | (defcustom side-hustle-select-window t 109 | "When non-nil, select the menu window after creating it." 110 | :type 'boolean 111 | :safe 'booleanp 112 | :group 'side-hustle) 113 | 114 | (defcustom side-hustle-persistent-window nil 115 | "When non-nil, make the side-window persistent. 116 | This requires either calling `quit-window' or 117 | `side-hustle-toggle' to quit the side-window." 118 | :type 'boolean 119 | :safe 'booleanp 120 | :group 'side-hustle) 121 | 122 | (defcustom side-hustle-evaporate-window nil 123 | "When non-nil, quit the side window when following link." 124 | :type 'boolean 125 | :safe 'booleanp 126 | :group 'side-hustle) 127 | 128 | (defcustom side-hustle-item-char ?\* 129 | "Character to use to itemize `imenu' items." 130 | :type '(choice (const nil) character) 131 | :group 'side-hustle) 132 | 133 | (defcustom side-hustle-indent-width 4 134 | "Indent width in columns for sublevels of `imenu' items." 135 | :type 'integer 136 | :safe 'integerp 137 | :group 'side-hustle) 138 | 139 | 140 | ;;; Faces ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 141 | 142 | (defface side-hustle 143 | '((t (:underline nil :inherit button))) 144 | "Default face for side-window items." 145 | :group 'side-hustle) 146 | 147 | ;; (defface side-hustle-highlight 148 | ;; '((t (:extend t :inherit (secondary-selection)))) 149 | ;; "Default face for highlighted items." 150 | ;; :group 'side-hustle) 151 | 152 | 153 | ;;; Internal Functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 154 | 155 | (defun side-hustle-button-ensure () 156 | "Ensure point is at button." 157 | (or (button-at (point)) 158 | (and (eolp) (forward-button -1 nil nil t)) 159 | (forward-button 1 nil nil t))) 160 | 161 | (defun side-hustle-imenu-item (button save-window) 162 | "Pop up buffer containing `imenu' item for BUTTON. 163 | Handle buffer according to SAVE-WINDOW or value of 164 | `side-hustle-evaporate-window'." 165 | (let ((buffer (current-buffer)) 166 | (imenu-item (button-get button 'hustle-item))) 167 | (when imenu-item 168 | (pop-to-buffer side-hustle--source-buffer) 169 | (imenu imenu-item) 170 | (recenter-top-bottom) 171 | (cond (save-window 172 | (select-window (get-buffer-window buffer (selected-frame)))) 173 | (side-hustle-evaporate-window 174 | (quit-window nil (get-buffer-window buffer (selected-frame)))))))) 175 | 176 | (defun side-hustle-switch-hide-state (label) 177 | "Toggle inclusion of LABEL in `side-hustle--hidden'." 178 | (setq side-hustle--hidden 179 | (if (member label side-hustle--hidden) 180 | (remove label side-hustle--hidden) 181 | (cons label side-hustle--hidden)))) 182 | 183 | (defun side-hustle-show-hide (start end) 184 | "Toggle invisibility of items between START and END." 185 | (with-silent-modifications 186 | (if (eq (get-text-property (button-end (button-at (point))) 'invisible) 187 | 'hustle-invisible) 188 | (put-text-property start end 'invisible nil) 189 | (put-text-property start end 'invisible 'hustle-invisible)))) 190 | 191 | (defun side-hustle-button-action (button &optional hide save-window) 192 | "Call appropriate button action for BUTTON. 193 | When HIDE is non-nil, always hide child items. Pass SAVE-WINDOW 194 | to `side-hustle-imenu-item'." 195 | (let ((level (button-get button 'hustle-level)) 196 | (label (button-label button)) 197 | (start (button-end button)) 198 | (end (button-end button))) 199 | (save-excursion 200 | (while (and (forward-button 1 nil nil t) 201 | (< level (button-get (button-at (point)) 'hustle-level))) 202 | (setq end (button-end (button-at (point)))))) 203 | (cond ((= start end) 204 | (side-hustle-imenu-item button save-window)) 205 | (hide 206 | (side-hustle-show-hide start end)) 207 | (t 208 | (side-hustle-show-hide start end) 209 | (side-hustle-switch-hide-state label))))) 210 | 211 | (defun side-hustle-insert (item level) 212 | "Insert ITEM at indentation level LEVEL. 213 | And `imenu' marker as button property." 214 | (insert (make-string level ?\t)) 215 | (when (characterp side-hustle-item-char) 216 | (insert side-hustle-item-char "\s")) 217 | (insert-text-button (car item) 218 | 'hustle-item item 219 | 'hustle-level level 220 | 'face 'side-hustle 221 | 'action #'side-hustle-button-action 222 | 'help-echo "mouse-1, RET: go to this item; SPC: show this item" 223 | 'follow-link t) 224 | (insert ?\n)) 225 | 226 | (defun side-hustle-insert-items (imenu-items level) 227 | "For each item in IMENU-ITEMS, insert appropriately. 228 | Either call `side-hustle-insert' at LEVEL, or if item is an 229 | alist, insert alist string and increment LEVEL before calling 230 | recursively with `cdr'." 231 | (mapc 232 | (lambda (item) 233 | (if (imenu--subalist-p item) 234 | (progn 235 | (side-hustle-insert item level) 236 | (side-hustle-insert-items (cdr item) (1+ level))) 237 | (side-hustle-insert item level))) 238 | imenu-items)) 239 | 240 | (defun side-hustle-refresh () 241 | "Rebuild and insert `imenu' entries for source buffer." 242 | (interactive) 243 | (with-silent-modifications 244 | (let ((x (point)) 245 | imenu-items) 246 | (when (buffer-live-p side-hustle--source-buffer) 247 | (setq imenu-items 248 | (with-current-buffer side-hustle--source-buffer 249 | (setq imenu--index-alist nil) 250 | (imenu--make-index-alist t) 251 | imenu--index-alist))) 252 | (erase-buffer) 253 | (setq header-line-format (buffer-name side-hustle--source-buffer)) 254 | (setq tab-width side-hustle-indent-width) 255 | (when imenu-items (side-hustle-insert-items imenu-items 0)) 256 | (goto-char (point-min)) 257 | (let (button) 258 | (while (setq button (forward-button 1 nil nil t)) 259 | (when (member (button-label button) side-hustle--hidden) 260 | (side-hustle-button-action button t)))) 261 | (goto-char x)))) 262 | 263 | (defun side-hustle-find-existing (sourcebuf) 264 | "Return existing `side-hustle' buffer for SOURCEBUF or nil if none." 265 | (seq-find 266 | (lambda (buf) 267 | (with-current-buffer buf 268 | (eq side-hustle--source-buffer sourcebuf))) 269 | (buffer-list))) 270 | 271 | (defun side-hustle-get-buffer-create (sourcebuf) 272 | "Get or create `side-hustle' buffer for SOURCEBUF." 273 | (or (side-hustle-find-existing sourcebuf) 274 | (let ((new-buf (get-buffer-create 275 | (concat "Side-Hustle: " (buffer-name sourcebuf))))) 276 | (with-current-buffer new-buf 277 | (side-hustle-mode) 278 | (setq side-hustle--source-buffer sourcebuf) 279 | (setq side-hustle--hidden nil)) 280 | new-buf))) 281 | 282 | ;; (defun side-hustle-highlight-current () 283 | ;; "Highlight the current `imenu' item in `side-hustle'. 284 | ;; Added to `window-configuration-change-hook'." 285 | ;; (unless (or (minibuffer-window-active-p (selected-window)) 286 | ;; (eq major-mode 'side-hustle-mode)) 287 | ;; (let ((x (point)) 288 | ;; (buf (side-hustle-find-existing (current-buffer))) 289 | ;; candidate diff) 290 | ;; (when (and buf (window-live-p (get-buffer-window buf))) 291 | ;; (with-current-buffer buf 292 | ;; (with-silent-modifications 293 | ;; (remove-text-properties (point-min) (point-max) '(face)) 294 | ;; (goto-char (point-min)) 295 | ;; (while (< (point) (point-max)) 296 | ;; (let ((marker (get-text-property (point) 'side-hustle-imenu-marker))) 297 | ;; (when (and (markerp marker) 298 | ;; (<= (marker-position marker) x) 299 | ;; (or (null diff) (< (- x (marker-position marker)) diff))) 300 | ;; (setq candidate (point) 301 | ;; diff (if diff 302 | ;; (min diff (- x (marker-position marker))) 303 | ;; (- x (marker-position marker)))))) 304 | ;; (forward-line 1)) 305 | ;; (when candidate 306 | ;; (goto-char candidate) 307 | ;; (put-text-property (line-beginning-position 1) 308 | ;; (line-beginning-position 2) 309 | ;; 'face 'side-hustle-highlight)))))))) 310 | 311 | 312 | ;;; Commands ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 313 | 314 | (defun side-hustle-goto-item () 315 | "Go to the `imenu' item at point in other window." 316 | (interactive) 317 | (when (side-hustle-button-ensure) 318 | (side-hustle-button-action (button-at (point))))) 319 | 320 | (defun side-hustle-show-item () 321 | "Display the `imenu' item at point in other window." 322 | (interactive) 323 | (when (side-hustle-button-ensure) 324 | (side-hustle-button-action (button-at (point)) nil t))) 325 | 326 | ;;;###autoload 327 | (defun side-hustle-toggle () 328 | "Pop up a side window containing `side-hustle'." 329 | (interactive) 330 | (if (eq major-mode 'side-hustle-mode) 331 | (quit-window) 332 | (let ((display-buffer-mark-dedicated t) 333 | (buf (side-hustle-get-buffer-create (current-buffer)))) 334 | (if (get-buffer-window buf (selected-frame)) 335 | (delete-windows-on buf (selected-frame)) 336 | (display-buffer-in-side-window 337 | buf (append side-hustle-display-alist 338 | (when side-hustle-persistent-window 339 | (list '(window-parameters 340 | (no-delete-other-windows . t)))))) 341 | (with-current-buffer buf (side-hustle-refresh)) 342 | ;; (side-hustle-highlight-current) 343 | (when side-hustle-select-window 344 | (select-window (get-buffer-window buf (selected-frame)))))))) 345 | 346 | ;; (defalias 'toggle-side-hustle #'side-hustle-toggle) 347 | 348 | 349 | ;;; Mode Definition ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 350 | 351 | (defvar side-hustle-mode-map 352 | (let ((map (make-sparse-keymap))) 353 | (define-key map (kbd "p") #'previous-line) 354 | (define-key map (kbd "n") #'next-line) 355 | (define-key map (kbd "q") #'quit-window) 356 | (define-key map (kbd "g") #'side-hustle-refresh) 357 | (define-key map (kbd "RET") #'side-hustle-goto-item) 358 | (define-key map (kbd "SPC") #'side-hustle-show-item) 359 | (define-key map (kbd "TAB") #'forward-button) 360 | (define-key map (kbd "S-TAB") #'backward-button) 361 | (define-key map (kbd "") #'backward-button) 362 | map)) 363 | 364 | (define-derived-mode side-hustle-mode 365 | special-mode "Side-Hustle" 366 | "Major mode to navigate `imenu' via a side window. 367 | 368 | You should not activate this mode directly, rather, call 369 | `side-hustle-toggle' \\[side-hustle-toggle] in a source buffer." 370 | (add-to-invisibility-spec '(hustle-invisible . t))) 371 | 372 | 373 | 374 | (provide 'side-hustle) 375 | ;;; side-hustle.el ends here 376 | 377 | ;; Local Variables: 378 | ;; coding: utf-8-unix 379 | ;; fill-column: 80 380 | ;; require-final-newline: t 381 | ;; sentence-end-double-space: nil 382 | ;; indent-tabs-mode: nil 383 | ;; End: 384 | --------------------------------------------------------------------------------