101 lines
3.2 KiB
EmacsLisp
101 lines
3.2 KiB
EmacsLisp
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;;; bw.el --- Show stuff in a bottom window
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;; Copyright (C) 2012 Tom Willemsen
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;; Author: Tom Willemsen <slash@drd>
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;; Keywords: convenience
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;; Version: 0
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Show stuff in a bottom window.
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;;; Code:
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(defvar bw-last-shown-buffer nil
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"The last buffer shown by bw.")
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(defadvice quit-window (around delete-window-perhaps activate)
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"Delete the bottom window if necessary."
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(let* ((win (window-normalize-window (ad-get-arg 2)))
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(delp (and (window-parameter win 'bw-bottom)
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(string-match-p "^\\*.*\\*$"
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(buffer-name (window-buffer win))))))
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ad-do-it
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(when delp
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(delete-window win))))
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(defun bw-create-window ()
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"Create the bottom window."
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(let ((win (split-window (frame-root-window) -20 'below)))
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(set-window-parameter win 'bw-bottom t)
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;; Don't allow splitting of the bottom window.
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(set-window-parameter win 'split-window (lambda (window size side) nil))
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;; Don't allow deleting other windows in the bottom window.
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(set-window-parameter win 'delete-other-windows (lambda (window) nil))
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win))
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(defun bw-get-window ()
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"Try to get the bottom window."
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(let (win)
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(mapc
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(lambda (w)
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(when (window-parameter w 'bw-bottom)
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(setq win w)))
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(window-list))
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win))
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(defun bw-display-in-bottom-window (buffer alist)
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"Show BUFFER in the bottom window, discard ALIST."
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(let ((win (or (bw-get-window) (bw-create-window))))
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(set-window-buffer win buffer)
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(setq bw-last-shown-buffer buffer)
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(local-set-key (kbd "C-c C-q") 'delete-window)
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win))
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(add-to-list 'display-buffer-alist
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'("^\\*.*\\*$" . ((bw-display-in-bottom-window . nil))))
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(add-to-list 'window-persistent-parameters (cons 'bw-bottom t))
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(defun bw-find-appropriate-buffer ()
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"Find an appropriate buffer for bw."
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(let ((buffers (buffer-list))
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tmp-buffer buffer)
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(while (and (not buffer) buffers)
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(setq tmp-buffer (car buffers))
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(when (string-match-p "^\\*.*\\*$" (buffer-name tmp-buffer))
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(setq buffer tmp-buffer))
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(setq buffers (cdr buffers)))
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(unless buffer
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(setq buffer "*scratch*"))
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buffer))
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(defun bw-toggle-bottom-window ()
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"Either show or delete the bottom window."
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(interactive)
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(let ((win (bw-get-window)))
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(if win
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(delete-window win)
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(setq win (bw-create-window))
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(bw-display-in-bottom-window
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(or bw-last-shown-buffer (bw-find-appropriate-buffer)) nil)
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(select-window win))))
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(global-set-key (kbd "<f11>") 'bw-toggle-bottom-window)
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(provide 'bw)
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;;; bw.el ends here
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