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mu4e-view: experiment xwidget support 

Add experimental support for displaying html messages in an xwidget; this
doesn't work for all messages.
This commit is contained in:
Dirk-Jan C. Binnema 2022-01-10 22:07:06 +02:00
parent 42d5cde612
commit 324b6f5022
1 changed files with 23 additions and 7 deletions
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30
mu4e/mu4e-view.el
View File

@ -74,9 +74,12 @@ details."
:group 'mu4e-view)
(defcustom mu4e-view-actions
'( ("capture message" . mu4e-action-capture-message)
("view in browser" . mu4e-action-view-in-browser)
("show this thread" . mu4e-action-show-thread))
(seq-filter 'identity
`( ("capture message" . mu4e-action-capture-message)
("view in browser" . mu4e-action-view-in-browser)
,(when (fboundp 'xwidget-webkit-browse-url)
'("xview in xwidget" . mu4e-action-view-in-xwidget))
("show this thread" . mu4e-action-show-thread)))
"List of actions to perform on messages in view mode.
The actions are cons-cells of the form:
(NAME . FUNC)
@ -643,8 +646,9 @@ marking if it still had that."
(mu4e~view-render-buffer msg)
(buffer-substring-no-properties (point-min) (point-max))))
(defun mu4e-action-view-in-browser (msg)
(defun mu4e-action-view-in-browser (msg &optional skip-headers)
"Show current MSG in browser if it includes an HTML-part.
If SKIP-HEADERS is set, do not show include message headers.
The variables `browse-url-browser-function',
`browse-url-handlers', and `browse-url-default-handlers'
determine which browser function to use."
@ -652,9 +656,10 @@ determine which browser function to use."
(insert-file-contents-literally
(mu4e-message-field msg :path) nil nil nil t)
(run-hooks 'gnus-article-decode-hook)
(let ((header (cl-loop for field in '("from" "to" "cc" "date" "subject")
when (message-fetch-field field)
concat (format "%s: %s\n" (capitalize field) it)))
(let ((header (unless skip-headers
(cl-loop for field in '("from" "to" "cc" "date" "subject")
when (message-fetch-field field)
concat (format "%s: %s\n" (capitalize field) it))))
(parts (mm-dissect-buffer t t)))
;; If singlepart, enforce a list.
(when (and (bufferp (car parts))
@ -665,6 +670,17 @@ determine which browser function to use."
(mu4e-warn "Message does not contain a \"text/html\" part"))
(mm-destroy-parts parts))))
(defun mu4e-action-view-in-xwidget (msg)
"Show current MSG in an embedded xwidget, if available.
This is an experimental feature; this appear to work for all
messages."
(unless (fboundp 'xwidget-webkit-browse-url)
(mu4e-error "No xwidget support available"))
(let ((browse-url-browser-function
(lambda (url &optional _rest)
(xwidget-webkit-browse-url url))))
(mu4e-action-view-in-browser msg)))
(defun mu4e~view-render-buffer (msg)
"Render current buffer with MSG using Gnus' article mode."