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- ;;; gnus-win.el --- window configuration functions for Gnus
- ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
-
- ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
- ;; Keywords: news
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs 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.
-
- ;; GNU Emacs 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., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;;; Code:
-
- (eval-when-compile (require 'cl))
-
- (require 'gnus)
-
- (defgroup gnus-windows nil
- "Window configuration."
- :group 'gnus)
-
- (defcustom gnus-use-full-window t
- "*If non-nil, use the entire Emacs screen."
- :group 'gnus-windows
- :type 'boolean)
-
- (defvar gnus-window-configuration nil
- "Obsolete variable. See `gnus-buffer-configuration'.")
-
- (defcustom gnus-window-min-width 2
- "*Minimum width of Gnus buffers."
- :group 'gnus-windows
- :type 'integer)
-
- (defcustom gnus-window-min-height 1
- "*Minimum height of Gnus buffers."
- :group 'gnus-windows
- :type 'integer)
-
- (defcustom gnus-always-force-window-configuration nil
- "*If non-nil, always force the Gnus window configurations."
- :group 'gnus-windows
- :type 'boolean)
-
- (defvar gnus-buffer-configuration
- '((group
- (vertical 1.0
- (group 1.0 point)
- (if gnus-carpal '(group-carpal 4))))
- (summary
- (vertical 1.0
- (summary 1.0 point)
- (if gnus-carpal '(summary-carpal 4))))
- (article
- (cond
- ((and gnus-use-picons
- (eq gnus-picons-display-where 'picons))
- '(frame 1.0
- (vertical 1.0
- (summary 0.25 point)
- (if gnus-carpal '(summary-carpal 4))
- (article 1.0))
- (vertical ((height . 5) (width . 15)
- (user-position . t)
- (left . -1) (top . 1))
- (picons 1.0))))
- (gnus-use-trees
- '(vertical 1.0
- (summary 0.25 point)
- (tree 0.25)
- (article 1.0)))
- (t
- '(vertical 1.0
- (summary 0.25 point)
- (if gnus-carpal '(summary-carpal 4))
- (article 1.0)))))
- (server
- (vertical 1.0
- (server 1.0 point)
- (if gnus-carpal '(server-carpal 2))))
- (browse
- (vertical 1.0
- (browse 1.0 point)
- (if gnus-carpal '(browse-carpal 2))))
- (message
- (vertical 1.0
- (message 1.0 point)))
- (pick
- (vertical 1.0
- (article 1.0 point)))
- (info
- (vertical 1.0
- (info 1.0 point)))
- (summary-faq
- (vertical 1.0
- (summary 0.25)
- (faq 1.0 point)))
- (edit-article
- (vertical 1.0
- (article 1.0 point)))
- (edit-form
- (vertical 1.0
- (group 0.5)
- (edit-form 1.0 point)))
- (edit-score
- (vertical 1.0
- (summary 0.25)
- (edit-score 1.0 point)))
- (post
- (vertical 1.0
- (post 1.0 point)))
- (reply
- (vertical 1.0
- (article-copy 0.5)
- (message 1.0 point)))
- (forward
- (vertical 1.0
- (message 1.0 point)))
- (reply-yank
- (vertical 1.0
- (message 1.0 point)))
- (mail-bounce
- (vertical 1.0
- (article 0.5)
- (message 1.0 point)))
- (draft
- (vertical 1.0
- (draft 1.0 point)))
- (pipe
- (vertical 1.0
- (summary 0.25 point)
- (if gnus-carpal '(summary-carpal 4))
- ("*Shell Command Output*" 1.0)))
- (bug
- (vertical 1.0
- ("*Gnus Help Bug*" 0.5)
- ("*Gnus Bug*" 1.0 point)))
- (score-trace
- (vertical 1.0
- (summary 0.5 point)
- ("*Score Trace*" 1.0)))
- (score-words
- (vertical 1.0
- (summary 0.5 point)
- ("*Score Words*" 1.0)))
- (compose-bounce
- (vertical 1.0
- (article 0.5)
- (message 1.0 point))))
- "Window configuration for all possible Gnus buffers.
- See the Gnus manual for an explanation of the syntax used.")
-
- (defvar gnus-window-to-buffer
- '((group . gnus-group-buffer)
- (summary . gnus-summary-buffer)
- (article . gnus-article-buffer)
- (server . gnus-server-buffer)
- (browse . "*Gnus Browse Server*")
- (edit-group . gnus-group-edit-buffer)
- (edit-form . gnus-edit-form-buffer)
- (edit-server . gnus-server-edit-buffer)
- (group-carpal . gnus-carpal-group-buffer)
- (summary-carpal . gnus-carpal-summary-buffer)
- (server-carpal . gnus-carpal-server-buffer)
- (browse-carpal . gnus-carpal-browse-buffer)
- (edit-score . gnus-score-edit-buffer)
- (message . gnus-message-buffer)
- (mail . gnus-message-buffer)
- (post-news . gnus-message-buffer)
- (faq . gnus-faq-buffer)
- (picons . "*Picons*")
- (tree . gnus-tree-buffer)
- (score-trace . "*Score Trace*")
- (info . gnus-info-buffer)
- (article-copy . gnus-article-copy)
- (draft . gnus-draft-buffer))
- "Mapping from short symbols to buffer names or buffer variables.")
-
- ;;; Internal variables.
-
- (defvar gnus-current-window-configuration nil
- "The most recently set window configuration.")
-
- (defvar gnus-created-frames nil)
-
- (defun gnus-kill-gnus-frames ()
- "Kill all frames Gnus has created."
- (while gnus-created-frames
- (when (frame-live-p (car gnus-created-frames))
- ;; We slap a condition-case around this `delete-frame' to ensure
- ;; against errors if we try do delete the single frame that's left.
- (ignore-errors
- (delete-frame (car gnus-created-frames))))
- (pop gnus-created-frames)))
-
- (defun gnus-window-configuration-element (list)
- (while (and list
- (not (assq (car list) gnus-window-configuration)))
- (pop list))
- (cadr (assq (car list) gnus-window-configuration)))
-
- (defun gnus-windows-old-to-new (setting)
- ;; First we take care of the really, really old Gnus 3 actions.
- (when (symbolp setting)
- (setq setting
- ;; Take care of ooold GNUS 3.x values.
- (cond ((eq setting 'SelectArticle) 'article)
- ((memq setting '(SelectNewsgroup SelectSubject ExpandSubject))
- 'summary)
- ((memq setting '(ExitNewsgroup)) 'group)
- (t setting))))
- (if (or (listp setting)
- (not (and gnus-window-configuration
- (memq setting '(group summary article)))))
- setting
- (let* ((elem
- (cond
- ((eq setting 'group)
- (gnus-window-configuration-element
- '(group newsgroups ExitNewsgroup)))
- ((eq setting 'summary)
- (gnus-window-configuration-element
- '(summary SelectNewsgroup SelectSubject ExpandSubject)))
- ((eq setting 'article)
- (gnus-window-configuration-element
- '(article SelectArticle)))))
- (total (apply '+ elem))
- (types '(group summary article))
- (pbuf (if (eq setting 'newsgroups) 'group 'summary))
- (i 0)
- perc out)
- (while (< i 3)
- (or (not (numberp (nth i elem)))
- (zerop (nth i elem))
- (progn
- (setq perc (if (= i 2)
- 1.0
- (/ (float (nth i elem)) total)))
- (push (if (eq pbuf (nth i types))
- (list (nth i types) perc 'point)
- (list (nth i types) perc))
- out)))
- (incf i))
- `(vertical 1.0 ,@(nreverse out)))))
-
- ;;;###autoload
- (defun gnus-add-configuration (conf)
- "Add the window configuration CONF to `gnus-buffer-configuration'."
- (setq gnus-buffer-configuration
- (cons conf (delq (assq (car conf) gnus-buffer-configuration)
- gnus-buffer-configuration))))
-
- (defvar gnus-frame-list nil)
-
- (defun gnus-configure-frame (split &optional window)
- "Split WINDOW according to SPLIT."
- (unless window
- (setq window (get-buffer-window (current-buffer))))
- (select-window window)
- ;; This might be an old-stylee buffer config.
- (when (vectorp split)
- (setq split (append split nil)))
- (when (or (consp (car split))
- (vectorp (car split)))
- (push 1.0 split)
- (push 'vertical split))
- ;; The SPLIT might be something that is to be evaled to
- ;; return a new SPLIT.
- (while (and (not (assq (car split) gnus-window-to-buffer))
- (gnus-functionp (car split)))
- (setq split (eval split)))
- (let* ((type (car split))
- (subs (cddr split))
- (len (if (eq type 'horizontal) (window-width) (window-height)))
- (total 0)
- (window-min-width (or gnus-window-min-width window-min-width))
- (window-min-height (or gnus-window-min-height window-min-height))
- s result new-win rest comp-subs size sub)
- (cond
- ;; Nothing to do here.
- ((null split))
- ;; Don't switch buffers.
- ((null type)
- (and (memq 'point split) window))
- ;; This is a buffer to be selected.
- ((not (memq type '(frame horizontal vertical)))
- (let ((buffer (cond ((stringp type) type)
- (t (cdr (assq type gnus-window-to-buffer)))))
- buf)
- (unless buffer
- (error "Illegal buffer type: %s" type))
- (unless (setq buf (get-buffer (if (symbolp buffer)
- (symbol-value buffer) buffer)))
- (setq buf (get-buffer-create (if (symbolp buffer)
- (symbol-value buffer) buffer))))
- (switch-to-buffer buf)
- ;; We return the window if it has the `point' spec.
- (and (memq 'point split) window)))
- ;; This is a frame split.
- ((eq type 'frame)
- (unless gnus-frame-list
- (setq gnus-frame-list (list (window-frame
- (get-buffer-window (current-buffer))))))
- (let ((i 0)
- params frame fresult)
- (while (< i (length subs))
- ;; Frame parameter is gotten from the sub-split.
- (setq params (cadr (elt subs i)))
- ;; It should be a list.
- (unless (listp params)
- (setq params nil))
- ;; Create a new frame?
- (unless (setq frame (elt gnus-frame-list i))
- (nconc gnus-frame-list (list (setq frame (make-frame params))))
- (push frame gnus-created-frames))
- ;; Is the old frame still alive?
- (unless (frame-live-p frame)
- (setcar (nthcdr i gnus-frame-list)
- (setq frame (make-frame params))))
- ;; Select the frame in question and do more splits there.
- (select-frame frame)
- (setq fresult (or (gnus-configure-frame (elt subs i)) fresult))
- (incf i))
- ;; Select the frame that has the selected buffer.
- (when fresult
- (select-frame (window-frame fresult)))))
- ;; This is a normal split.
- (t
- (when (> (length subs) 0)
- ;; First we have to compute the sizes of all new windows.
- (while subs
- (setq sub (append (pop subs) nil))
- (while (and (not (assq (car sub) gnus-window-to-buffer))
- (gnus-functionp (car sub)))
- (setq sub (eval sub)))
- (when sub
- (push sub comp-subs)
- (setq size (cadar comp-subs))
- (cond ((equal size 1.0)
- (setq rest (car comp-subs))
- (setq s 0))
- ((floatp size)
- (setq s (floor (* size len))))
- ((integerp size)
- (setq s size))
- (t
- (error "Illegal size: %s" size)))
- ;; Try to make sure that we are inside the safe limits.
- (cond ((zerop s))
- ((eq type 'horizontal)
- (setq s (max s window-min-width)))
- ((eq type 'vertical)
- (setq s (max s window-min-height))))
- (setcar (cdar comp-subs) s)
- (incf total s)))
- ;; Take care of the "1.0" spec.
- (if rest
- (setcar (cdr rest) (- len total))
- (error "No 1.0 specs in %s" split))
- ;; The we do the actual splitting in a nice recursive
- ;; fashion.
- (setq comp-subs (nreverse comp-subs))
- (while comp-subs
- (if (null (cdr comp-subs))
- (setq new-win window)
- (setq new-win
- (split-window window (cadar comp-subs)
- (eq type 'horizontal))))
- (setq result (or (gnus-configure-frame
- (car comp-subs) window)
- result))
- (select-window new-win)
- (setq window new-win)
- (setq comp-subs (cdr comp-subs))))
- ;; Return the proper window, if any.
- (when result
- (select-window result))))))
-
- (defvar gnus-frame-split-p nil)
-
- (defun gnus-configure-windows (setting &optional force)
- (setq gnus-current-window-configuration setting)
- (setq force (or force gnus-always-force-window-configuration))
- (setq setting (gnus-windows-old-to-new setting))
- (let ((split (if (symbolp setting)
- (cadr (assq setting gnus-buffer-configuration))
- setting))
- all-visible)
-
- (setq gnus-frame-split-p nil)
-
- (unless split
- (error "No such setting: %s" setting))
-
- (if (and (setq all-visible (gnus-all-windows-visible-p split))
- (not force))
- ;; All the windows mentioned are already visible, so we just
- ;; put point in the assigned buffer, and do not touch the
- ;; winconf.
- (select-window all-visible)
-
- ;; Either remove all windows or just remove all Gnus windows.
- (let ((frame (selected-frame)))
- (unwind-protect
- (if gnus-use-full-window
- ;; We want to remove all other windows.
- (if (not gnus-frame-split-p)
- ;; This is not a `frame' split, so we ignore the
- ;; other frames.
- (delete-other-windows)
- ;; This is a `frame' split, so we delete all windows
- ;; on all frames.
- (gnus-delete-windows-in-gnusey-frames))
- ;; Just remove some windows.
- (gnus-remove-some-windows)
- (switch-to-buffer nntp-server-buffer))
- (select-frame frame)))
-
- (switch-to-buffer nntp-server-buffer)
- (gnus-configure-frame split (get-buffer-window (current-buffer))))))
-
- (defun gnus-delete-windows-in-gnusey-frames ()
- "Do a `delete-other-windows' in all frames that have Gnus windows."
- (let ((buffers
- (mapcar
- (lambda (elem)
- (if (symbolp (cdr elem))
- (when (and (boundp (cdr elem))
- (symbol-value (cdr elem)))
- (get-buffer (symbol-value (cdr elem))))
- (when (cdr elem)
- (get-buffer (cdr elem)))))
- gnus-window-to-buffer)))
- (mapcar
- (lambda (frame)
- (unless (eq (cdr (assq 'minibuffer
- (frame-parameters frame)))
- 'only)
- (select-frame frame)
- (let (do-delete)
- (walk-windows
- (lambda (window)
- (when (memq (window-buffer window) buffers)
- (setq do-delete t))))
- (when do-delete
- (delete-other-windows)))))
- (frame-list))))
-
- (defun gnus-all-windows-visible-p (split)
- "Say whether all buffers in SPLIT are currently visible.
- In particular, the value returned will be the window that
- should have point."
- (let ((stack (list split))
- (all-visible t)
- type buffer win buf)
- (while (and (setq split (pop stack))
- all-visible)
- ;; Be backwards compatible.
- (when (vectorp split)
- (setq split (append split nil)))
- (when (or (consp (car split))
- (vectorp (car split)))
- (push 1.0 split)
- (push 'vertical split))
- ;; The SPLIT might be something that is to be evaled to
- ;; return a new SPLIT.
- (while (and (not (assq (car split) gnus-window-to-buffer))
- (gnus-functionp (car split)))
- (setq split (eval split)))
-
- (setq type (elt split 0))
- (cond
- ;; Nothing here.
- ((null split) t)
- ;; A buffer.
- ((not (memq type '(horizontal vertical frame)))
- (setq buffer (cond ((stringp type) type)
- (t (cdr (assq type gnus-window-to-buffer)))))
- (unless buffer
- (error "Illegal buffer type: %s" type))
- (when (setq buf (get-buffer (if (symbolp buffer)
- (symbol-value buffer)
- buffer)))
- (setq win (get-buffer-window buf t)))
- (if win
- (when (memq 'point split)
- (setq all-visible win))
- (setq all-visible nil)))
- (t
- (when (eq type 'frame)
- (setq gnus-frame-split-p t))
- (setq stack (append (cddr split) stack)))))
- (unless (eq all-visible t)
- all-visible)))
-
- (defun gnus-window-top-edge (&optional window)
- (nth 1 (window-edges window)))
-
- (defun gnus-remove-some-windows ()
- (let ((buffers gnus-window-to-buffer)
- buf bufs lowest-buf lowest)
- (save-excursion
- ;; Remove windows on all known Gnus buffers.
- (while buffers
- (setq buf (cdar buffers))
- (when (symbolp buf)
- (setq buf (and (boundp buf) (symbol-value buf))))
- (and buf
- (get-buffer-window buf)
- (progn
- (push buf bufs)
- (pop-to-buffer buf)
- (when (or (not lowest)
- (< (gnus-window-top-edge) lowest))
- (setq lowest (gnus-window-top-edge))
- (setq lowest-buf buf))))
- (setq buffers (cdr buffers)))
- ;; Remove windows on *all* summary buffers.
- (walk-windows
- (lambda (win)
- (let ((buf (window-buffer win)))
- (when (string-match "^\\*Summary" (buffer-name buf))
- (push buf bufs)
- (pop-to-buffer buf)
- (when (or (not lowest)
- (< (gnus-window-top-edge) lowest))
- (setq lowest-buf buf)
- (setq lowest (gnus-window-top-edge)))))))
- (when lowest-buf
- (pop-to-buffer lowest-buf)
- (switch-to-buffer nntp-server-buffer))
- (while bufs
- (when (not (eq (car bufs) lowest-buf))
- (delete-windows-on (car bufs)))
- (setq bufs (cdr bufs))))))
-
- (provide 'gnus-win)
-
- ;;; gnus-win.el ends here
-