mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-28 13:44:12 +01:00
59adb2da19
`notmuch-hello' should call `notmuch-hello-mode' function only when run for the first time. But before the change, `notmuch-hello' used `kill-all-local-variables' to remove editable widgets fields. This caused the major mode to be reset, and `notmuch-hello-mode' to be called every time. The patch manually deletes all editable widget fields and removes `kill-all-local-variables' call.
602 lines
20 KiB
EmacsLisp
602 lines
20 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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(eval-when-compile (require 'cl))
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(require 'widget)
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(require 'wid-edit) ; For `widget-forward'.
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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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(defun notmuch-sort-saved-searches (alist)
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"Generate an alphabetically sorted saved searches alist."
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(sort alist (lambda (a b) (string< (car a) (car b)))))
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(defcustom notmuch-saved-search-sort-function nil
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"Function used to sort the saved searches for the notmuch-hello view.
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This variable controls how saved searches should be sorted. No
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sorting (nil) displays the saved searches in the order they are
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stored in `notmuch-saved-searches'. Sort alphabetically sorts the
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saved searches in alphabetical order. Custom sort function should
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be a function or a lambda expression that takes the saved
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searches alist as a parameter, and returns a new saved searches
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alist to be used."
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:type '(choice (const :tag "No sorting" nil)
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(const :tag "Sort alphabetically" notmuch-sort-saved-searches)
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(function :tag "Custom sort function"
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:value notmuch-sort-saved-searches))
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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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(defcustom notmuch-hello-tag-list-make-query nil
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"Function or string to generate queries for the all tags list.
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This variable controls which query results are shown for each tag
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in the \"all tags\" list. If nil, it will use all messages with
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that tag. If this is set to a string, it is used as a filter for
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messages having that tag (equivalent to \"tag:TAG and (THIS-VARIABLE)\").
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Finally this can be a function that will be called for each tag and
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should return a filter for that tag, or nil to hide the tag."
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:type '(choice (const :tag "All messages" nil)
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(const :tag "Unread messages" "tag:unread")
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(const :tag "Custom filter" string)
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(const :tag "Custom filter function" function))
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:group 'notmuch)
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(defcustom notmuch-hello-hide-tags nil
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"List of tags to be hidden in the \"all tags\"-section."
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:type '(repeat string)
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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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(defcustom notmuch-column-control t
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"Controls the number of columns for saved searches/tags in notmuch view.
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This variable has three potential sets of values:
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- t: automatically calculate the number of columns possible based
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on the tags to be shown and the window width,
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- an integer: a lower bound on the number of characters that will
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be used to display each column,
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- a float: a fraction of the window width that is the lower bound
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on the number of characters that should be used for each
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column.
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So:
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- if you would like two columns of tags, set this to 0.5.
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- if you would like a single column of tags, set this to 1.0.
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- if you would like tags to be 30 characters wide, set this to
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30.
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- if you don't want to worry about all of this nonsense, leave
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this set to `t'."
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:group 'notmuch
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:type '(choice
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(const :tag "Automatically calculated" t)
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(integer :tag "Number of characters")
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(float :tag "Fraction of window")))
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(defcustom notmuch-decimal-separator ","
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"The string used as a decimal separator.
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Typically \",\" in the US and UK and \".\" in Europe."
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:group 'notmuch
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:type 'string)
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(defcustom notmuch-hello-mode-hook nil
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"Functions called after entering `notmuch-hello-mode'."
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:group 'notmuch
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:type 'hook)
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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-nice-number (n)
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(let (result)
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(while (> n 0)
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(push (% n 1000) result)
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(setq n (/ n 1000)))
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(setq result (or result '(0)))
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(apply #'concat
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(number-to-string (car result))
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(mapcar (lambda (elem)
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(format "%s%03d" notmuch-decimal-separator elem))
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(cdr result)))))
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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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(add-to-list 'notmuch-saved-searches
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(cons name search) t))
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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-reflect-generate-row (ncols nrows row list)
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(let ((len (length list)))
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(loop for col from 0 to (- ncols 1)
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collect (let ((offset (+ (* nrows col) row)))
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(if (< offset len)
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(nth offset list)
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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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nil)))))
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(defun notmuch-hello-reflect (list ncols)
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"Reflect a `ncols' wide matrix represented by `list' along the
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diagonal."
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;; Not very lispy...
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(let ((nrows (ceiling (length list) ncols)))
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(loop for row from 0 to (- nrows 1)
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append (notmuch-hello-reflect-generate-row ncols nrows row list))))
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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-tags-per-line (widest)
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"Determine how many tags to show per line and how wide they
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should be. Returns a cons cell `(tags-per-line width)'."
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(let ((tags-per-line
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(cond
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((integerp notmuch-column-control)
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(max 1
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(/ (- (window-width) notmuch-hello-indent)
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;; Count is 9 wide (8 digits plus space), 1 for the space
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;; after the name.
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(+ 9 1 (max notmuch-column-control widest)))))
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((floatp notmuch-column-control)
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(let* ((available-width (- (window-width) notmuch-hello-indent))
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(proposed-width (max (* available-width notmuch-column-control) widest)))
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(floor available-width proposed-width)))
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(t
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(max 1
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(/ (- (window-width) notmuch-hello-indent)
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;; Count is 9 wide (8 digits plus space), 1 for the space
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;; after the name.
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(+ 9 1 widest)))))))
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(cons tags-per-line (/ (max 1
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(- (window-width) notmuch-hello-indent
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;; Count is 9 wide (8 digits plus
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;; space), 1 for the space after the
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;; name.
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(* tags-per-line (+ 9 1))))
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tags-per-line))))
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(defun notmuch-hello-insert-tags (tag-alist widest target)
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(let* ((tags-and-width (notmuch-hello-tags-per-line widest))
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(tags-per-line (car tags-and-width))
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(widest (cdr tags-and-width))
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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 "%8s "
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(notmuch-hello-nice-number
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(string-to-number (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 (max 1
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(- widest (length name)))
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? ))))
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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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"Update the current notmuch view."
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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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(defvar notmuch-hello-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map widget-keymap)
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(define-key map "v" '(lambda () "Display the notmuch version" (interactive)
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(message "notmuch version %s" (notmuch-version))))
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(define-key map "?" 'notmuch-help)
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(define-key map "q" 'notmuch-kill-this-buffer)
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(define-key map "=" 'notmuch-hello-update)
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(define-key map "G" 'notmuch-hello-poll-and-update)
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(define-key map (kbd "<C-tab>") 'widget-backward)
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(define-key map "m" 'notmuch-mua-new-mail)
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(define-key map "s" 'notmuch-hello-goto-search)
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map)
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"Keymap for \"notmuch hello\" buffers.")
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(fset 'notmuch-hello-mode-map notmuch-hello-mode-map)
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(defun notmuch-hello-mode ()
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"Major mode for convenient notmuch navigation. This is your entry portal into notmuch.
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Complete list of currently available key bindings:
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\\{notmuch-hello-mode-map}"
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(interactive)
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(kill-all-local-variables)
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(use-local-map notmuch-hello-mode-map)
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(setq major-mode 'notmuch-hello-mode
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mode-name "notmuch-hello")
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(run-mode-hooks 'notmuch-hello-mode-hook)
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;;(setq buffer-read-only t)
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)
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(defun notmuch-hello-generate-tag-alist ()
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"Return an alist from tags to queries to display in the all-tags section."
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(notmuch-remove-if-not
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#'cdr
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(mapcar (lambda (tag)
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(cons tag
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(cond
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((functionp notmuch-hello-tag-list-make-query)
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(concat "tag:" tag " and ("
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(funcall notmuch-hello-tag-list-make-query tag) ")"))
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((stringp notmuch-hello-tag-list-make-query)
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(concat "tag:" tag " and ("
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notmuch-hello-tag-list-make-query ")"))
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(t (concat "tag:" tag)))))
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(notmuch-remove-if-not
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(lambda (tag)
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(not (member tag notmuch-hello-hide-tags)))
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(process-lines notmuch-command "search-tags")))))
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;;;###autoload
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(defun notmuch-hello (&optional no-display)
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"Run notmuch and display saved searches, known tags, etc."
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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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(inhibit-read-only t))
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;; Delete all editable widget fields. Editable widget fields are
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;; tracked in a buffer local variable `widget-field-list' (and
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;; others). If we do `erase-buffer' without properly deleting the
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;; widgets, some widget-related functions are confused later.
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(mapc 'widget-delete widget-field-list)
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(erase-buffer)
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(unless (eq major-mode 'notmuch-hello-mode)
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(notmuch-hello-mode))
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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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(notmuch-hello-nice-number
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(string-to-number (car (process-lines notmuch-command "count")))))
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(widget-insert " messages.\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 searches 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 (if notmuch-show-all-tags-list (notmuch-hello-generate-tag-alist)))
|
|
(alltags-widest (notmuch-hello-longest-label alltags-alist))
|
|
(widest (max saved-widest alltags-widest)))
|
|
|
|
(when saved-alist
|
|
;; Sort saved searches if required.
|
|
(when notmuch-saved-search-sort-function
|
|
(setq saved-alist
|
|
(funcall notmuch-saved-search-sort-function saved-alist)))
|
|
(widget-insert "\nSaved searches: ")
|
|
(widget-create 'push-button
|
|
:notify (lambda (&rest ignore)
|
|
(customize-variable 'notmuch-saved-searches))
|
|
"edit")
|
|
(widget-insert "\n\n")
|
|
(setq final-target-pos (point-marker))
|
|
(let ((start (point)))
|
|
(setq found-target-pos (notmuch-hello-insert-tags saved-alist widest target))
|
|
(if found-target-pos
|
|
(setq final-target-pos found-target-pos))
|
|
(indent-rigidly start (point) notmuch-hello-indent)))
|
|
|
|
(widget-insert "\nSearch: ")
|
|
(setq notmuch-hello-search-bar-marker (point-marker))
|
|
(widget-create 'editable-field
|
|
;; Leave some space at the start and end of the
|
|
;; search boxes.
|
|
:size (max 8 (- (window-width) notmuch-hello-indent
|
|
(length "Search: ")))
|
|
:action (lambda (widget &rest ignore)
|
|
(notmuch-hello-search (widget-value widget))))
|
|
;; add an invisible space to make `widget-end-of-line' ignore
|
|
;; trailine spaces in the search widget field
|
|
(widget-insert " ")
|
|
(put-text-property (1- (point)) (point) 'invisible t)
|
|
(widget-insert "\n")
|
|
|
|
(when notmuch-hello-recent-searches
|
|
(widget-insert "\nRecent searches: ")
|
|
(widget-create 'push-button
|
|
:notify (lambda (&rest ignore)
|
|
(setq notmuch-hello-recent-searches nil)
|
|
(notmuch-hello-update))
|
|
"clear")
|
|
(widget-insert "\n\n")
|
|
(let ((start (point))
|
|
(nth 0))
|
|
(mapc '(lambda (search)
|
|
(let ((widget-symbol (intern (format "notmuch-hello-search-%d" nth))))
|
|
(set widget-symbol
|
|
(widget-create 'editable-field
|
|
;; Don't let the search boxes be
|
|
;; less than 8 characters wide.
|
|
:size (max 8
|
|
(- (window-width)
|
|
;; Leave some space
|
|
;; at the start and
|
|
;; end of the
|
|
;; boxes.
|
|
(* 2 notmuch-hello-indent)
|
|
;; 1 for the space
|
|
;; before the
|
|
;; `[save]' button. 6
|
|
;; for the `[save]'
|
|
;; button.
|
|
1 6))
|
|
:action (lambda (widget &rest ignore)
|
|
(notmuch-hello-search (widget-value widget)))
|
|
search))
|
|
(widget-insert " ")
|
|
(widget-create 'push-button
|
|
:notify (lambda (widget &rest ignore)
|
|
(notmuch-hello-add-saved-search widget))
|
|
:notmuch-saved-search-widget widget-symbol
|
|
"save"))
|
|
(widget-insert "\n")
|
|
(setq nth (1+ nth)))
|
|
notmuch-hello-recent-searches)
|
|
(indent-rigidly start (point) notmuch-hello-indent)))
|
|
|
|
(when alltags-alist
|
|
(widget-insert "\nAll tags: ")
|
|
(widget-create 'push-button
|
|
:notify (lambda (widget &rest ignore)
|
|
(setq notmuch-show-all-tags-list nil)
|
|
(notmuch-hello-update))
|
|
"hide")
|
|
(widget-insert "\n\n")
|
|
(let ((start (point)))
|
|
(setq found-target-pos (notmuch-hello-insert-tags alltags-alist widest target))
|
|
(if (not final-target-pos)
|
|
(setq final-target-pos found-target-pos))
|
|
(indent-rigidly start (point) notmuch-hello-indent)))
|
|
|
|
(widget-insert "\n")
|
|
|
|
(if (not notmuch-show-all-tags-list)
|
|
(widget-create 'push-button
|
|
:notify (lambda (widget &rest ignore)
|
|
(setq notmuch-show-all-tags-list t)
|
|
(notmuch-hello-update))
|
|
"Show all tags")))
|
|
|
|
(let ((start (point)))
|
|
(widget-insert "\n\n")
|
|
(widget-insert "Type a search query and hit RET to view matching threads.\n")
|
|
(when notmuch-hello-recent-searches
|
|
(widget-insert "Hit RET to re-submit a previous search. Edit it first if you like.\n")
|
|
(widget-insert "Save recent searches with the `save' button.\n"))
|
|
(when notmuch-saved-searches
|
|
(widget-insert "Edit saved searches with the `edit' button.\n"))
|
|
(widget-insert "Hit RET or click on a saved search or tag name to view matching threads.\n")
|
|
(widget-insert "`=' refreshes this screen. `s' jumps to the search box. `q' to quit.\n")
|
|
(let ((fill-column (- (window-width) notmuch-hello-indent)))
|
|
(center-region start (point))))
|
|
|
|
(widget-setup)
|
|
|
|
(when final-target-pos
|
|
(goto-char final-target-pos)
|
|
(unless (widget-at)
|
|
(widget-forward 1)))
|
|
|
|
(unless (widget-at)
|
|
(notmuch-hello-goto-search)))))
|
|
|
|
(defun notmuch-folder ()
|
|
"Deprecated function for invoking notmuch---calling `notmuch' is preferred now."
|
|
(interactive)
|
|
(notmuch-hello))
|
|
|
|
;;
|
|
|
|
(provide 'notmuch-hello)
|