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Allow non-default values of `bs-header-lines-length'.

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(bs--running-in-xemacs): Remove (not used anymore).
(bs--set-window-height): Simplify by using `fit-window-to-buffer' instead of
`shrink-window', thus avoiding having to compute the height of the window.
(bs--up): Wrap around even when there's no header.
(bs--down): Use `forward-line' instead of `next-line'.
This commit is contained in:
Juanma Barranquero 2006-01-31 16:32:00 +00:00
parent 448541bcd9
commit ca6b8248f7
1 changed files with 9 additions and 20 deletions
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29
lisp/bs.el
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@ -180,9 +180,6 @@ return a string representing the column's value."
:group 'bs-appearance
:type '(repeat sexp))
(defvar bs--running-in-xemacs (string-match "XEmacs" (emacs-version))
"Non-nil when running under XEmacs.")
(defun bs--make-header-match-string ()
"Return a regexp matching the first line of a Buffer Selection Menu buffer."
(let ((res "^\\(")
@ -701,12 +698,7 @@ Return nil if there is no such buffer."
(defun bs--set-window-height ()
"Change the height of the selected window to suit the current buffer list."
(unless (one-window-p t)
(shrink-window (- (window-height (selected-window))
;; window-height in xemacs includes mode-line
(+ (if bs--running-in-xemacs 3 1)
bs-header-lines-length
(min (length bs-current-list)
bs-max-window-height))))))
(fit-window-to-buffer (selected-window) bs-max-window-height)))
(defun bs--current-buffer ()
"Return buffer on current line.
@ -1011,13 +1003,11 @@ Uses function `vc-toggle-read-only'."
"Move cursor vertically up one line.
If on top of buffer list go to last line."
(interactive "p")
(previous-line 1)
(if (<= (count-lines 1 (point)) (1- bs-header-lines-length))
(progn
(goto-char (point-max))
(beginning-of-line)
(recenter -1))
(beginning-of-line)))
(if (> (count-lines 1 (point)) bs-header-lines-length)
(forward-line -1)
(goto-char (point-max))
(beginning-of-line)
(recenter -1)))
(defun bs-down (arg)
"Move cursor vertically down ARG lines in Buffer Selection Menu."
@ -1029,10 +1019,9 @@ If on top of buffer list go to last line."
(defun bs--down ()
"Move cursor vertically down one line.
If at end of buffer list go to first line."
(let ((last (line-end-position)))
(if (eq last (point-max))
(goto-line (1+ bs-header-lines-length))
(next-line 1))))
(if (eq (line-end-position) (point-max))
(goto-line (1+ bs-header-lines-length))
(forward-line 1)))
(defun bs-visits-non-file (buffer)
"Return t or nil whether BUFFER visits no file.