mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-29 22:24:12 +01:00
1e18711543
Re-working the saved search/tag insertion to buttonize only the name of the saved search/tag plus one space broke the calculation of how much filler is required to complete the column, resulting in lines wider than the window.
420 lines
14 KiB
EmacsLisp
420 lines
14 KiB
EmacsLisp
;; notmuch-hello.el --- welcome to notmuch, a frontend
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;;
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;; Copyright © David Edmondson
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;;
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;; This file is part of Notmuch.
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;;
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;; Notmuch is free software: you can redistribute it and/or modify it
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;; 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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;;
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;; Notmuch is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>.
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;;
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;; Authors: David Edmondson <dme@dme.org>
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(require 'widget)
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(require 'wid-edit) ; For `widget-forward'.
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(require 'cl)
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(require 'notmuch-lib)
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(require 'notmuch-mua)
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(declare-function notmuch-search "notmuch" (query &optional oldest-first target-thread target-line continuation))
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(declare-function notmuch-poll "notmuch" ())
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(defvar notmuch-hello-search-bar-marker nil
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"The position of the search bar within the notmuch-hello buffer.")
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(defcustom notmuch-recent-searches-max 10
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"The number of recent searches to store and display."
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:type 'integer
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:group 'notmuch)
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(defcustom notmuch-show-empty-saved-searches nil
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"Should saved searches with no messages be listed?"
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:type 'boolean
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:group 'notmuch)
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(defvar notmuch-hello-indent 4
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"How much to indent non-headers.")
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(defcustom notmuch-show-logo t
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"Should the notmuch logo be shown?"
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:type 'boolean
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:group 'notmuch)
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(defcustom notmuch-show-all-tags-list nil
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"Should all tags be shown in the notmuch-hello view?"
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:type 'boolean
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:group 'notmuch)
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(defface notmuch-hello-logo-background
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'((((class color)
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(background dark))
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(:background "#5f5f5f"))
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(((class color)
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(background light))
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(:background "white")))
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"Background colour for the notmuch logo."
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:group 'notmuch)
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(defvar notmuch-hello-url "http://notmuchmail.org"
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"The `notmuch' web site.")
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(defvar notmuch-hello-recent-searches nil)
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(defun notmuch-hello-remember-search (search)
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(if (not (member search notmuch-hello-recent-searches))
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(push search notmuch-hello-recent-searches))
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(if (> (length notmuch-hello-recent-searches)
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notmuch-recent-searches-max)
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(setq notmuch-hello-recent-searches (butlast notmuch-hello-recent-searches))))
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(defun notmuch-hello-trim (search)
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"Trim whitespace."
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(if (string-match "^[[:space:]]*\\(.*[^[:space:]]\\)[[:space:]]*$" search)
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(match-string 1 search)
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search))
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(defun notmuch-hello-search (search)
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(let ((search (notmuch-hello-trim search)))
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(notmuch-hello-remember-search search)
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(notmuch-search search notmuch-search-oldest-first nil nil #'notmuch-hello-search-continuation)))
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(defun notmuch-hello-add-saved-search (widget)
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(interactive)
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(let ((search (widget-value
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(symbol-value
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(widget-get widget :notmuch-saved-search-widget))))
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(name (completing-read "Name for saved search: "
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notmuch-saved-searches)))
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;; If an existing saved search with this name exists, remove it.
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(setq notmuch-saved-searches
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(loop for elem in notmuch-saved-searches
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if (not (equal name
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(car elem)))
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collect elem))
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;; Add the new one.
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(customize-save-variable 'notmuch-saved-searches
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(push (cons name search)
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notmuch-saved-searches))
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(message "Saved '%s' as '%s'." search name)
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(notmuch-hello-update)))
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(defun notmuch-hello-longest-label (tag-alist)
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(or (loop for elem in tag-alist
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maximize (length (car elem)))
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0))
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(defun notmuch-hello-roundup (dividend divisor)
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"Return the rounded up value of dividing `dividend' by `divisor'."
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(+ (/ dividend divisor)
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(if (> (% dividend divisor) 0) 1 0)))
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(defun notmuch-hello-reflect (list width)
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"Reflect a `width' wide matrix represented by `list' along the
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diagonal."
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;; Not very lispy...
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(let* ((len (length list))
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(nrows (notmuch-hello-roundup len width)))
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(loop for row from 0 to (- nrows 1)
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append (loop for col from 0 to (- width 1)
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;; How could we calculate the offset just once
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;; per inner-loop?
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if (< (+ (* nrows col) row) len)
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collect (nth (+ (* nrows col) row) list)
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else
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;; Don't forget to insert an empty slot in the
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;; output matrix if there is no corresponding
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;; value in the input matrix.
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collect nil))))
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(defun notmuch-hello-widget-search (widget &rest ignore)
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(notmuch-search (widget-get widget
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:notmuch-search-terms)
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notmuch-search-oldest-first
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nil nil #'notmuch-hello-search-continuation))
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(defun notmuch-saved-search-count (search)
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(car (process-lines notmuch-command "count" search)))
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(defun notmuch-hello-insert-tags (tag-alist widest target)
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(let* ((tags-per-line (max 1
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(/ (- (window-width) notmuch-hello-indent)
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;; Count is 7 wide (6 digits plus
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;; space), 1 for the space after the
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;; name.
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(+ 7 1 widest))))
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(count 0)
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(reordered-list (notmuch-hello-reflect tag-alist tags-per-line))
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;; Hack the display of the buttons used.
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(widget-push-button-prefix "")
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(widget-push-button-suffix "")
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(found-target-pos nil))
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;; dme: It feels as though there should be a better way to
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;; implement this loop than using an incrementing counter.
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(mapc (lambda (elem)
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;; (not elem) indicates an empty slot in the matrix.
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(when elem
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(let* ((name (car elem))
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(query (cdr elem))
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(formatted-name (format "%s " name)))
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(widget-insert (format "%6s " (notmuch-saved-search-count query)))
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(if (string= formatted-name target)
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(setq found-target-pos (point-marker)))
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(widget-create 'push-button
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:notify #'notmuch-hello-widget-search
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:notmuch-search-terms query
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formatted-name)
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;; Insert enough space to consume the rest of the
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;; column. Because the button for the name is `(1+
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;; (length name))' long (due to the trailing space) we
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;; can just insert `(- widest (length name))' spaces -
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;; the column separator is included in the button if
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;; `(equal widest (length name)'.
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(widget-insert (make-string (- widest (length name)) ? )))
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(setq count (1+ count))
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(if (eq (% count tags-per-line) 0)
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(widget-insert "\n"))))
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reordered-list)
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;; If the last line was not full (and hence did not include a
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;; carriage return), insert one now.
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(if (not (eq (% count tags-per-line) 0))
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(widget-insert "\n"))
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found-target-pos))
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(defun notmuch-hello-goto-search ()
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"Put point inside the `search' widget."
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(interactive)
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(goto-char notmuch-hello-search-bar-marker))
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(defimage notmuch-hello-logo ((:type png :file "notmuch-logo.png")))
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(defun notmuch-hello-search-continuation()
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(notmuch-hello-update t))
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(defun notmuch-hello-update (&optional no-display)
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;; Lazy - rebuild everything.
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(interactive)
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(notmuch-hello no-display))
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(defun notmuch-hello-poll-and-update ()
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"Invoke `notmuch-poll' to import mail, then refresh the current view."
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(interactive)
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(notmuch-poll)
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(notmuch-hello-update))
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(defun notmuch-hello (&optional no-display)
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(interactive)
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; Jump through a hoop to get this value from the deprecated variable
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; name (`notmuch-folders') or from the default value.
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(if (not notmuch-saved-searches)
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(setq notmuch-saved-searches (notmuch-saved-searches)))
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(if no-display
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(set-buffer "*notmuch-hello*")
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(switch-to-buffer "*notmuch-hello*"))
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(let ((target (if (widget-at)
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(widget-value (widget-at))
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(condition-case nil
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(progn
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(widget-forward 1)
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(widget-value (widget-at)))
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(error nil)))))
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(kill-all-local-variables)
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(let ((inhibit-read-only t))
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(erase-buffer))
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(let ((all (overlay-lists)))
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;; Delete all the overlays.
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(mapc 'delete-overlay (car all))
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(mapc 'delete-overlay (cdr all)))
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(when notmuch-show-logo
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(let ((image notmuch-hello-logo))
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;; The notmuch logo uses transparency. That can display poorly
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;; when inserting the image into an emacs buffer (black logo on
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;; a black background), so force the background colour of the
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;; image. We use a face to represent the colour so that
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;; `defface' can be used to declare the different possible
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;; colours, which depend on whether the frame has a light or
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;; dark background.
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(setq image (cons 'image
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(append (cdr image)
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(list :background (face-background 'notmuch-hello-logo-background)))))
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(insert-image image))
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(widget-insert " "))
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(widget-insert "Welcome to ")
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;; Hack the display of the links used.
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(let ((widget-link-prefix "")
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(widget-link-suffix ""))
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(widget-create 'link
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:notify (lambda (&rest ignore)
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(browse-url notmuch-hello-url))
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:help-echo "Visit the notmuch website."
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"notmuch")
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(widget-insert ". ")
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(widget-insert "You have ")
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(widget-create 'link
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:notify (lambda (&rest ignore)
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(notmuch-hello-update))
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:help-echo "Refresh"
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(car (process-lines notmuch-command "count")))
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(widget-insert " messages (that's not much mail).\n\n"))
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(let ((found-target-pos nil)
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(final-target-pos nil))
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(let* ((saved-alist
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;; Filter out empty saved seaches if required.
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(if notmuch-show-empty-saved-searches
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notmuch-saved-searches
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(loop for elem in notmuch-saved-searches
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if (> (string-to-number (notmuch-saved-search-count (cdr elem))) 0)
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collect elem)))
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(saved-widest (notmuch-hello-longest-label saved-alist))
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(alltags-alist (mapcar '(lambda (tag) (cons tag (concat "tag:" tag)))
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(process-lines notmuch-command "search-tags")))
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(alltags-widest (notmuch-hello-longest-label alltags-alist))
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(widest (max saved-widest alltags-widest)))
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(when saved-alist
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(widget-insert "Saved searches: ")
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(widget-create 'push-button
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:notify (lambda (&rest ignore)
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(customize-variable 'notmuch-saved-searches))
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"edit")
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(widget-insert "\n\n")
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(setq final-target-pos (point-marker))
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(let ((start (point)))
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(setq found-target-pos (notmuch-hello-insert-tags saved-alist widest target))
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(if found-target-pos
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(setq final-target-pos found-target-pos))
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(indent-rigidly start (point) notmuch-hello-indent)))
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(let ((start (point)))
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(widget-insert "\nSearch: ")
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(setq notmuch-hello-search-bar-marker (point-marker))
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(widget-create 'editable-field
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;; Leave some space at the start and end of the
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;; search boxes.
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:size (max 8 (- (window-width) (* 2 notmuch-hello-indent)
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(length "Search: ")))
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:action (lambda (widget &rest ignore)
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(notmuch-hello-search (widget-value widget))))
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(widget-insert "\n")
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(indent-rigidly start (point) notmuch-hello-indent))
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(when notmuch-hello-recent-searches
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(widget-insert "\nRecent searches: ")
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(widget-create 'push-button
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:notify (lambda (&rest ignore)
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(setq notmuch-hello-recent-searches nil)
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(notmuch-hello-update))
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"clear")
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(widget-insert "\n\n")
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(let ((start (point))
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(nth 0))
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(mapc '(lambda (search)
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(let ((widget-symbol (intern (format "notmuch-hello-search-%d" nth))))
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(set widget-symbol
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(widget-create 'editable-field
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;; Don't let the search boxes be
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;; less than 8 characters wide.
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:size (max 8
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(- (window-width)
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;; Leave some space
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;; at the start and
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;; end of the
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;; boxes.
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(* 2 notmuch-hello-indent)
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;; 1 for the space
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;; before the
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;; `[save]' button. 6
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;; for the `[save]'
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;; button.
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1 6))
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:action (lambda (widget &rest ignore)
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(notmuch-hello-search (widget-value widget)))
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search))
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(widget-insert " ")
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(widget-create 'push-button
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:notify (lambda (widget &rest ignore)
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(notmuch-hello-add-saved-search widget))
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:notmuch-saved-search-widget widget-symbol
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"save"))
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(widget-insert "\n")
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(setq nth (1+ nth)))
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notmuch-hello-recent-searches)
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(indent-rigidly start (point) notmuch-hello-indent)))
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(when alltags-alist
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(if notmuch-show-all-tags-list
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(progn
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(widget-insert "\nAll tags: ")
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(widget-create 'push-button
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:notify (lambda (widget &rest ignore)
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(setq notmuch-show-all-tags-list nil)
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(notmuch-hello-update))
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"hide")
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(widget-insert "\n\n")
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(let ((start (point)))
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(setq found-target-pos (notmuch-hello-insert-tags alltags-alist widest target))
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(if (not final-target-pos)
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(setq final-target-pos found-target-pos))
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(indent-rigidly start (point) notmuch-hello-indent)))
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(widget-insert "\n")
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(widget-create 'push-button
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:notify (lambda (widget &rest ignore)
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(setq notmuch-show-all-tags-list t)
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(notmuch-hello-update))
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"Show all tags"))))
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(let ((start (point)))
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(widget-insert "\n\n")
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(widget-insert "Type a search query and hit RET to view matching threads.\n")
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(when notmuch-hello-recent-searches
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(widget-insert "Hit RET to re-submit a previous search. Edit it first if you like.\n")
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(widget-insert "Save recent searches with the `save' button.\n"))
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(when notmuch-saved-searches
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(widget-insert "Edit saved searches with the `edit' button.\n"))
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(widget-insert "Hit RET or click on a saved search or tag name to view matching threads.\n")
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(widget-insert "`=' refreshes this screen. `s' jumps to the search box. `q' to quit.\n")
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(let ((fill-column (- (window-width) notmuch-hello-indent)))
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(center-region start (point))))
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(use-local-map widget-keymap)
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(local-set-key "=" 'notmuch-hello-update)
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(local-set-key "G" 'notmuch-hello-poll-and-update)
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(local-set-key "m" 'notmuch-mua-mail)
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(local-set-key "q" '(lambda () (interactive) (kill-buffer (current-buffer))))
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(local-set-key "s" 'notmuch-hello-goto-search)
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(local-set-key "v" '(lambda () (interactive)
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(message "notmuch version %s" (notmuch-version))))
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(widget-setup)
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(goto-char final-target-pos)
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(if (not (widget-at))
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(widget-forward 1)))))
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;;;###autoload
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(defun notmuch-folder ()
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"Deprecated function for invoking notmuch---calling `notmuch' is preferred now."
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(interactive)
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(notmuch-hello))
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;;
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(provide 'notmuch-hello)
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