misc/fuel/fuel-popup.el

   1 ;;; fuel-popup.el -- popup windows -*- lexical-binding: t -*-
   2
   3 ;; Copyright (C) 2008 Jose Antonio Ortega Ruiz
   4 ;; See http://factorcode.org/license.txt for BSD license.
   5
   6 ;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
   7 ;; Keywords: languages, fuel, factor
   8 ;; Start date: Sun Dec 21, 2008 14:37
   9
  10 ;;; Comentary:
  11
  12 ;; A minor mode to pop up windows and restore configurations
  13 ;; afterwards.
  14
  15 ;;; Code:
  16
  17 (defvar-local fuel-popup--created-window nil)
  18
  19 (defvar-local fuel-popup--selected-window nil)
  20
  21 (defun fuel-popup--display (&optional buffer display-only)
  22   (when buffer (set-buffer buffer))
  23   (let ((selected-window (selected-window))
  24         (buffer (current-buffer)))
  25     (unless (eq selected-window (get-buffer-window buffer))
  26       (let ((windows))
  27         (walk-windows (lambda (w) (push w windows)) nil t)
  28         (prog1 (if display-only
  29                    (display-buffer buffer)
  30                  (pop-to-buffer buffer))
  31           (setq-local fuel-popup--created-window
  32                (unless (memq (selected-window) windows) (selected-window)))
  33           (setq-local fuel-popup--selected-window selected-window))))))
  34
  35 (defun fuel-popup--quit ()
  36   (interactive)
  37   (let ((selected fuel-popup--selected-window)
  38         (created fuel-popup--created-window))
  39     (bury-buffer)
  40     (when (eq created (selected-window)) (delete-window created))
  41     (when (window-live-p selected) (select-window selected))))
  42
  43 ;;;###autoload
  44 (define-minor-mode fuel-popup-mode
  45   "Mode for displaying read only stuff"
  46   nil nil
  47   '(("q" . fuel-popup--quit))
  48   (setq buffer-read-only t))
  49
  50 \f
  51 (provide 'fuel-popup)
  52
  53 ;;; fuel-popup.el ends here