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;;; emms-pbi-popup.el --- Playlist-popup functionality for EMMS
;; Copyright (C) 2003 Free Software Foundation, Inc.
;; Author: Ulrik Jensen <terryp@daimi.au.dk>
;; Keywords:
;; This file 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 2, or (at your option)
;; any later version.
;; This file 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
;; Boston, MA 02110-1301 USA
;;; Commentary:
;;
;;; Code:
(require 'emms-pbi)
(defvar emms-pbi-popup-version "0.2 $Revision: 1.7 $"
"EMMS pbi popup version string.")
;; $Id: emms-pbi-popup.el,v 1.7 2005/07/09 11:56:00 forcer Exp $
(defgroup emms-pbi-popup nil
"*Module for popping up the playlist in a keystroke."
:group 'emms-pbi
:prefix "emms-pbi-popup-")
(defcustom emms-pbi-popup-default-width (+ (or emms-pbi-playlist-entry-max-length 36) 4)
"*The default width of the window to popup the playlist in.
This defaults to `emms-pbi-playlist-entry-max-length' + 4, or 40 if
`emms-pbi-playlist-entry-max-length' is nil."
:group 'emms-pbi-popup
:type 'number)
(defcustom emms-pbi-popup-default-side-left nil
"*Boolean determining whether to popup in the left-side as a
default. If nil, the popup will appear in the right side."
:type 'boolean
:group 'emms-pbi-popup)
(defvar emms-pbi-popup-old-conf nil
"The window-configuration when popping up the playlist.")
(defun emms-pbi-popup-forget-conf ()
"Forget the previously saved configuration, and make the changes
final."
(setq emms-pbi-popup-old-conf nil)
;; Remove the special bindings
(emms-pbi-popup-revert)
;; Remove this function again, it will get addded when a new
;; configuration is saved anyway
(remove-hook 'window-configuration-change-hook 'emms-pbi-popup-forget-conf))
(defun emms-pbi-popup-revert ()
"Revert to the window-configuration from before if there is one,
otherwise just remove the special bindings from the playlist."
(interactive)
(remove-hook 'emms-pbi-manually-change-song-hook 'emms-pbi-popup-revert)
(let ((playlistbuffer (get-buffer emms-pbi-playlist-buffer-name)))
(when playlistbuffer
(save-excursion
(set-buffer playlistbuffer)
(local-unset-key (kbd "q"))
(local-unset-key (kbd "TAB")))))
(when emms-pbi-popup-old-conf
(set-window-configuration emms-pbi-popup-old-conf)))
;; Entry-point
(defun emms-pbi-popup-playlist (&optional popup-left popup-width )
"Pops up the playlist temporarily, for selecting a new song.
If POPUP-LEFT is non-nil, the window will appear in the left side of
the current window, otherwise it will appear in the right side.
POPUP-WIDTH is the width of the new frame, defaulting to
`emms-pbi-popup-default-width'."
(interactive)
(setq popup-width (or popup-width emms-pbi-popup-default-width)
popup-left (or popup-left emms-pbi-popup-default-side-left))
;; Split the current screen, and make the playlist popup
(let ((new-window-width (- (window-width) popup-width)))
(if (not (> new-window-width 0))
;; consider just opening the playlist here instead of arguing
;; semantics with the user?
(error "Current window not wide enough to popup playlist!")
;; Negative value to popup in the left side
(when popup-left
(setq new-window-width (- new-window-width)))
;; Make sure EMMS is actually playing before continuing
(if (or (not (emms-playlist-get-playlist)) (= (length (emms-playlist-get-playlist)) 0))
;; we haven't got a playlist, exit.
(error "Can't popup playlist-buffer until a playlist has been loaded!")
;; if
;; Save the current window-configuration
(setq emms-pbi-popup-old-conf (current-window-configuration))
;; Split and select the playlist
(let ((buffer-on-the-right
(split-window-horizontally new-window-width)))
(unless popup-left
(select-window buffer-on-the-right)))
(unless (get-buffer emms-pbi-playlist-buffer-name)
;; No playlist-buffer yet, create it.
(emms-pbi 1))
(switch-to-buffer emms-pbi-playlist-buffer-name t)
;; Now, modify the playlist functionality to revert to the
;; window-configuration from before when a song is selected
(add-hook 'emms-pbi-manually-change-song-hook 'emms-pbi-popup-revert)
(local-set-key (kbd "TAB") 'emms-pbi-popup-revert)
(local-set-key (kbd "q") 'delete-window)
;; Also, forget about the whole thing if the user does something
;; to the window-configuration
(add-hook 'window-configuration-change-hook 'emms-pbi-popup-forget-conf)))))
(provide 'emms-pbi-popup)
;;; emms-pbi-popup.el ends here
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