misc/fuel/fuel-popup.el

   1 ;;; fuel-popup.el -- popup windows
   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 (make-variable-buffer-local
  18  (defvar fuel-popup--created-window nil))
  19
  20 (make-variable-buffer-local
  21  (defvar fuel-popup--selected-window nil))
  22
  23 (defun fuel-popup--display (&optional buffer)
  24   (when buffer (set-buffer buffer))
  25   (let ((selected-window (selected-window))
  26         (buffer (current-buffer)))
  27     (unless (eq selected-window (get-buffer-window buffer))
  28       (let ((windows))
  29         (walk-windows (lambda (w) (push w windows)) nil t)
  30         (prog1 (pop-to-buffer buffer)
  31           (set (make-local-variable 'fuel-popup--created-window)
  32                (unless (memq (selected-window) windows) (selected-window)))
  33           (set (make-local-variable 'fuel-popup--selected-window)
  34                selected-window))))))
  35
  36 (defun fuel-popup--quit ()
  37   (interactive)
  38   (let ((selected fuel-popup--selected-window)
  39         (created fuel-popup--created-window))
  40     (bury-buffer)
  41     (when (eq created (selected-window)) (delete-window created))
  42     (when (window-live-p selected) (select-window selected))))
  43
  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 (defmacro fuel-popup--define (fun name mode)
  51   `(defun ,fun ()
  52      (or (get-buffer ,name)
  53          (with-current-buffer (get-buffer-create ,name)
  54            (funcall ,mode)
  55            (fuel-popup-mode)
  56            (current-buffer)))))
  57
  58 (put 'fuel-popup--define 'lisp-indent-function 1)
  59
  60 (defmacro fuel--with-popup (buffer &rest body)
  61   `(with-current-buffer ,buffer
  62      (let ((inhibit-read-only t))
  63        ,@body)))
  64
  65 (put 'fuel--with-popup 'lisp-indent-function 1)
  66
  67 \f
  68 (provide 'fuel-popup)
  69 ;;; fuel-popup.el ends here