* tabulated-list-resize-current-column
@ 2018-06-11 18:06 Boruch Baum
0 siblings, 0 replies; only message in thread
From: Boruch Baum @ 2018-06-11 18:06 UTC (permalink / raw)
To: Emacs-Devel List; +Cc: Chong Yidong
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Attached is a proposed contribution for the package `tabulated-list.el'.
The idea is to offer to emacs users a feature long-common in GUI
tabulated list widgets - the ability to dynamically resize columns. I
only use emacs in nox, so in my selfishness (and in my ignorance of most
programming things GUI) that's all this function provides, but it's a
start for anyone wanting to extend to that environment.
An obvious follow-up idea is a companion function to change the
sequence of columns, also a long-common feature in GUI environments.
--
hkp://keys.gnupg.net
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[-- Attachment #2: tabulated-list-resize-current-column.el --]
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(defun tabulated-list-resize-current-column (&optional num)
"Change width of the current column by N columns.
This is a buffer-local change. To permanently change a column's
size, see defcustom `tabulated-list-format'."
(interactive "N(In/De)crease size of current column by:")
(let ((col (current-column))
(total-column-count 0)
(len (length tabulated-list-format))
(idx 0) this-column-size found)
(while (and (not found) (< idx len))
(if (> col (setq total-column-count
(+ total-column-count
(setq this-column-size
(cadr (aref tabulated-list-format idx))))))
(setq idx (1+ idx))
(setf (cadr (aref tabulated-list-format idx)) (max 1 (+ this-column-size num)))
(setq found t)
(tabulated-list-init-header)
(tabulated-list-print)
(move-to-column col)))))
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