Commit Graph

576 Commits

Author SHA1 Message Date
Koni Marti ae99f4c5bb msglist: display reversed thread ordering
Reverse the ordering of the message threads.

Implements: https://todo.sr.ht/~rjarry/aerc/54
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-27 22:47:30 +02:00
Koni Marti 006e10357b threads: reverse thread ordering
Add reverse-thread-order option to the ui config to enable reverse
display of the mesage threads. Default order is the the intial message
is on the top with all the replies being displayed below. The reverse
options will put the initial message at the bottom with the replies on
top.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-27 22:44:39 +02:00
Koni Marti c5face0b6f store: reverse message list order with iterators
Reverse the order of the messages in the message list. The complexity of
reversing the order is abstracted away by the iterators. To reverse the
message list, add the following to your aerc.conf:

[ui]
reverse-msglist-order=true

Thanks to |cos| for sharing his initial implementation of reversing the
order in the message list [0].

[0]: https://git.netizen.se/aerc/commit/?h=topic/asc_sort_imap

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-27 22:44:39 +02:00
Koni Marti b860a64622 listbox: implement horizontal scrolling
Implement horizontal scrolling for selected lines that are longer than
dialog width. The following keys can be used:

Ctrl-a, Home	jump to beginning of line
Ctrl-e, End	jump to end of line
Left		move one character back
Right		move one character forward
Ctrl+b		move one word back
Ctrl+w		move one word forward

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-26 00:19:48 +02:00
Tim Culverhouse bd8a4feecc split: prevent opening split when no messages are selected
The [v]split command panics when it is run with no message selected, or
when messages aren't loaded. Check for a valid selected message before
creating a split, and report an error if one isn't selected.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-19 21:50:26 +02:00
Tim Culverhouse ee964ad6b0 command/help: remove helpClose function
The helpClose function is used to call UpdateScreen on MessageViewer,
which has the effect of invalidating and redrawing the message view.
This logic is redundant with the addition of tcell-term and the main
event loop.

Remove the helpClose calls. Remove the UpdateScreen methods from
messageviewer: those functions are only used by the helpClose function.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Koni Marti <koni.marti@gmail.com>
2022-10-19 21:01:55 +02:00
Tim Culverhouse 847c1cd3c3 terminal: properly handle cursor display
The terminal widget reports if the cursor should be displayed. Properly
handle this output to report cursor display back to aerc.

Reported-by: staceee
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-19 21:01:55 +02:00
Bence Ferdinandy c3bb3aa2a8 msgview: add separate date formatting
The ThisDayTimeFormat and friends are missing from the message view
which just uses the message list's default setting. This might not be
desirable since the amount of space available is different. Introduce
separate settings for formatting dates in the message view.

Signed-off-by: Bence Ferdinandy <bence@ferdinandy.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-19 20:27:58 +02:00
Koni Marti 6eed15c579 dirtree: fix folder scrolling
Fix scrolling by correcting the index calculation.

Fixes: https://todo.sr.ht/~rjarry/aerc/93
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Inwit <inwit@sindominio.net>
2022-10-19 20:27:24 +02:00
Tim Culverhouse bad694e466 ui: add :split and :vsplit view options
Add :split and :vsplit commands, which split the message list view to
include a message viewer. Each command takes an int, or a delta value
("+1", "-1"). The int value is the resulting size of the message list,
and a new message viewer will be displayed below / to the right of the
message list. This viewer *does not* set seen flags.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-18 22:25:35 +02:00
Tim Culverhouse 556f346f96 msgviewer: simplify filter and pager command handling
Refactor the filtering and paging logic to use several fewer goroutines.
Fixes data race condition with the timing of filter -> pager ->
terminal, can be found when switching message views fast.

Check if filter -> pager process is currently running before calling it
to start again. Fixes data race between fetching message body and
terminal starting. Both can initiate the copying process, and for long
running filters and fast message fetching, it is possible to have
fetched a message but still be running the filter when the terminal
starts.

Move StripAnsi to it's own file in lib/parse, similar to the hyperlinks
parser.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-18 22:20:37 +02:00
Jason Cox 7647dfb8b4 compose: warn before sending without attachment
Prevent the embarrassing forgotten attachment scenario by warning the
user before sending a message that may need an attachment but does not
have one. Whether a message needs an attachment is determined by testing
a configurable regex against the message body.

Signed-off-by: Jason Cox <dev@jasoncarloscox.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-17 22:41:00 +02:00
Koni Marti 8ffcd3e5ad switch-account: fix out-of-bounds panic
Fix out-of-bounds panic by updating the focused int variable when
headers change in the switch-account commands.

Fixes: d371c1ac8 ("commands: add switch-account command for composer")
Reported-by: Bence Ferdinandy <bence@ferdinandy.com>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-17 22:06:50 +02:00
Robin Jarry ebfd2a9da3 filters: export mime type and filename in env
Export AERC_MIME_TYPE and AERC_FILENAME in the filters command
environment. This allows dynamic coloring with tools that require
a filename and/or a mime type to determine the syntax.

Update docs and add example use in the default config file.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
2022-10-16 11:35:24 +02:00
Robin Jarry 9bd2e0c84f msgpart: factorize mime type and filename construction
Reduce code duplication.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
2022-10-16 11:35:24 +02:00
Robin Jarry c95961fc74 filters: append well known dirs to exec PATH
To allow referencing built-in filters without hard coding a path during
installation, append the following folders to the exec PATH when running
the filter commands:

	~/.config/aerc/filters
	~/.local/share/aerc/filters
	$PREFIX/share/aerc/filters
	/usr/share/aerc/filters

If a filter script has the same name than a command in the default exec
PATH, it will not shadow it. In that edge case, the absolute path to the
filter script must be specified.

Suggested-by: Teo Luppi <me@luppi.uk>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
2022-10-16 11:35:20 +02:00
Tim Culverhouse 9cf69747eb compose: don't lock call to composer.grid.MouseEvent
The MouseEvent method of the composer passes on the mouse event to it's
underlying grid while the composer is locked. The underlying grid then
passes on the mouse event to child objects of the grid, which are
referenced via fields of the composer (c.editor is a field in composer
but a child of c.grid, for example). When the grid attempts to pass on
the mouse event, it is referencing a pointer which is locked, and a
deadlock occurs due to the original lock in composer.MouseEvent.

Unlock before calling the grid.MouseEvent, and lock the composer again
after it is called.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-12 22:16:48 +02:00
Moritz Poldrack 87d856c10c mailto: allow attaching of files
Some programs like Skanpage allow sharing files via email and attaching
them automatically from the mailto: link.
This patch introduces parsing of the attach query argument in mailto
links and attaches the listed files.
A potential file:// URL has it's prefix removed.

Signed-off-by: Moritz Poldrack <git@moritz.sh>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-12 22:16:45 +02:00
Tim Culverhouse ba24e92062 invalidatable: cleanup dead code
Remove invalidatable type and all associated calls. All items can
directly invalidate the UI.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-12 22:16:40 +02:00
Robin Jarry 34014d3cee compose: avoid deadlock when adding new header
AddEditor acquires the lock and calls FocusEditor which also attempts to
acquire it. Since the lock is not re-entrant, it ends in deadlock.

Add an internal focusEditor fonction that does not acquire the lock.

Fixes: bf2bf8c242 ("compose: prevent out of bounds access")
Reported-by: Moritz Poldrack <moritz@poldrack.dev>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Thomas Vigouroux <thomas.vigouroux@protonmail.com>
2022-10-11 14:50:34 +02:00
Robin Jarry 2eef2adfbd compose: fix mouse focus of header editors
The algorithm is broken, there may be more than one header editor with
focused=true. Reset the focused flag before forwarding the mouse event
to the composer grid.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
2022-10-11 14:50:28 +02:00
Tim Culverhouse a49caf96b5 terminal: use Invalidate and QueueRedraw
The terminal widget uses it's own redraw logic to improve performance.
With the addition of a main event loop, the redraw logic can happen in
the main loop via the standard Invalidate logic.

Use the Invalidate method to mark aerc invalid, and immediately trigger
a redraw with ui.QueueRedraw. The follow up call to QueueRedraw is
needed because the terminal update happens in a separate goroutine. This
can result in the main event loop finishing it's process of the current
event, redrawing the screen, and the terminal having additional updates
to be drawn.

This fixes race conditions by drawing and calling screen.Show in a
separate goroutine.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-07 10:51:53 +02:00
Tim Culverhouse bb1249164d aerc: use single event loop
Combine tcell events with WorkerMessages to better synchronize state
with IO and UI. Remove Tick loop for rendering. Use events to trigger
renders.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-07 10:51:53 +02:00
Tim Culverhouse d2f4f12f66 compose: avoid double lock in MouseEvent
The MouseEvent locks the composer, and also calls FocusEditor which
attempts to lock the composer. This results in a deadlock.

No need to call FocusEditor which takes a name as parameter and needs to
iterate over all editors to find the correct one. We already have the
headerEditor object, use it directly.

Fixes: bf2bf8c242 ("compose: prevent out of bounds access")
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
2022-10-05 21:14:18 +02:00
Koni Marti e4d418eed1 viewer: option to not mark message as seen
Add option to open a message in the message viewer without setting the
seen flag. Enables the message viewer to be used as a preview pane
without changing the message flags unintentionally. Before, the message
viewer would set the seen flag by default. The IMAP backend will now
always fetch the message body with the peek option enabled (same as we
fetch the headers).

An "auto-mark-read" option is added to the ui config which is set to
true by default. If set the false, the seen flag is not set by the
message viewer.

Co-authored-by: "James Cook" <falsifian@falsifian.org>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-04 09:43:58 +02:00
Tim Culverhouse 1c2dd4c9f1 bindings: properly check for exKey keystrokes
When checking for an exKey, aerc inspects the key and the rune of the
event vs the exkey binding. Runes should only be inspected if the key is
a tcell.KeyRune. Some Ctrl-[:alpha:] keys report a rune in tcell, but
aerc does not have these bound to the keystroke definition. Only <C-x>
has a rune bound, and is one of the very few <C-> keys that can actually
be bound to exKey

Only compare the Rune field if the key is of type KeyRune. Otherwise,
compare the Key. Also compare any modifiers with the keystroke/key
event. These changes allow for any control or alt key combination to be
bound to the exkey.

Update documentaiton to reflect that the default keybind is ':', and not
<semicolon>

Fixes: https://todo.sr.ht/~rjarry/aerc/67
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-03 21:08:23 +02:00
Koni Marti dc299cc8ad logging: substitute %w for %v
Subsitute the format specifier %w for %v in the logging facility. The
logging functions use a fmt.Sprintf call behind the scene which does not
recognize %w. %w should be used in fmt.Errorf when you want to wrap
errors. Hence, the log entries that use %w are improperly formatted like
this:

ERROR 2022/10/02 09:13:57.724529 worker.go:439: could not get message
info %!w(*fmt.wrapError=&{could not get structure: [snip] })
      ^

Links: https://go.dev/blog/go1.13-errors
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
2022-10-02 18:56:26 +02:00
Tim Culverhouse 020279108c terminal: fix race conditions on access to cmd
Upgrade tcell-term to v0.2.0

Use Start method from tcell-term. This prevents aerc from needing to
wait until the command has started to continue. The tcell-term start
method blocks until the command is started, similar to cmd.Start. By
doing so, we prevent a race condition between aerc and tcell-term on
access to cmd.Process.

Remove cleanup of cmd, this is all already handled by tcell-term when
Close is called.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-10-02 18:47:18 +02:00
Tim Culverhouse 8e53d33061 terminal: remove invalidate method
The terminal widget has two invalidation methods, one exported and one
private. The private one does nothing special.

Remove the private method and only use the exported method.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-29 21:21:00 +02:00
Tim Culverhouse 83136234a4 dirlist: prevent race condition on accessing uiconfig
Prevent a race condition when accessing UI Config maps

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-29 21:21:00 +02:00
kt programs 9c0e54f9d9 imap: stop checkmail if there are pending actions
Pass message containing remaining directories to check. Account widget
will recursively call CheckMail with the remaining directories until
a Done message is returned.

Only needed for IMAP worker as other workers run check-mail-cmd in
a separate goroutine.

Suggested-By: Tim Culverhouse <tim@timculverhouse.com>
Signed-off-by: kt programs <ktprograms@gmail.com>
Tested-by: Tim Culverhouse <tim@timculverhouse.com>
2022-09-29 17:14:07 +02:00
Robin Jarry bf2bf8c242 compose: prevent out of bounds access
Fix the following panic, seen while switching accounts:

runtime error: index out of range [4] with length 4

goroutine 6 [running]:
git.sr.ht/~rjarry/aerc/widgets.(*Composer).Focus(0xc005cfbe30?, 0x40?)
        git.sr.ht/~rjarry/aerc/widgets/compose.go:618 +0x51
git.sr.ht/~rjarry/aerc/widgets.(*Aerc).focus(0xc00034c000, {0x0?, 0x0})
        git.sr.ht/~rjarry/aerc/widgets/aerc.go:568 +0xec
git.sr.ht/~rjarry/aerc/widgets.(*Aerc).BeginExCommand.func2()
        git.sr.ht/~rjarry/aerc/widgets/aerc.go:590 +0x4c
git.sr.ht/~rjarry/aerc/widgets.(*ExLine).Event(0xc009453860, {0xbb6820?, 0xc009baa320?})
        git.sr.ht/~rjarry/aerc/widgets/exline.go:81 +0xbc
git.sr.ht/~rjarry/aerc/widgets.(*Aerc).Event(0xc009ab1950?, {0xbb6820?, 0xc009baa320?})
        git.sr.ht/~rjarry/aerc/widgets/aerc.go:285 +0x470
git.sr.ht/~rjarry/aerc/lib/ui.(*UI).ProcessEvents(0xc000327540)
        git.sr.ht/~rjarry/aerc/lib/ui/ui.go:117 +0x202
created by main.main
        git.sr.ht/~rjarry/aerc/aerc.go:244 +0x94c

Protect Composer.editable and Composer.focus with a mutex.

Reported-by: Bence Ferdinandy <bence@ferdinandy.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
2022-09-29 16:52:27 +02:00
Koni Marti 0e50f29bf3 notmuch: move logic for dynamic folders to backend
Moves logic for creating dynamic folders from the dirlist widget to the
backend. Since dynamic folders are notmuch-specific, the notmuch backend
should be responsible for correctly setting up those folders. It does
that by sending two DirectoryInfos: the first to create the message
store, the second to fetch the directory content.

This approach also fixes a deadlock introduced by 716ade8968
("worker: lock access to callback maps").

Reported-by: Bence Ferdinandy <bence@ferdinandy.com>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Tim Culverhouse <tim@timculverhouse.com>
2022-09-29 16:52:12 +02:00
Tim Culverhouse 055c6dc660 exline: don't draw completions for keybinds
The exline widget works by matching actual keystrokes to a map of
keybinds, and if a match is found sending simulated keystrokes through
aerc. This has the effect of aerc thinking we are actually typing in the
expanded command, and aerc attempts to draw the completions. This
results in even basic navigation having two screen draws:

For example, pressing 'j' to select the next message (:next), draws once
for the initial key event and state change, and again after the
completion debounce timer.

Disable tab completion while aerc is simulating keystrokes. If the
exline still has focus after simulating keystrokes, restore tab
completion.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Koni Marti <koni.marti@gmail.com>
2022-09-29 16:42:10 +02:00
Tim Culverhouse 9e54c921c8 checkmail: protect access to acct.checkingmail
A data race exists between the timer goroutine and the main goroutine
for checking / setting the status of acct.checkingmail. Protect access
to this value with a mutex

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-26 17:32:00 +02:00
Tim Culverhouse c8c4b8c7cb dirlist: avoid race from accessing ui config in Select debounce
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-26 17:31:15 +02:00
Tim Culverhouse c4a9f3f8a0 terminal: prevent draw loop when unfocused
If a :term is open and aerc is focused on another tab, it is possible
for the :term to redraw itself to the screen.

Only allow terminal to redraw itself when it is focused.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-26 17:31:05 +02:00
Tim Culverhouse a31606db0d grid: remove unused method Children
The grid method Children returns the children of a grid, and is never
used. The function is reimplemented in both aerc.go and account.go, also
never called.

Remove these unused methods.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-20 21:06:08 +02:00
Tim Culverhouse aa01f0f6dc dirlist: don't invalidate on spinner.Invalidate
The dirlist is invalidated explicitly after the spinner is stopped.
For simplicitly, don't invalidate on spinner.Invalidate.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-20 21:05:48 +02:00
Robin Jarry bb9ac43e13 switch: add -n and -p flags for relative switch
Allow switching to next or previous account with switch-account -n and
switch-account -p, respectively. By default, these are bound to Alt-n
and Alt-p.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Koni Marti <koni.marti@gmail.com>
2022-09-20 20:55:29 +02:00
Koni Marti ee4f2ea49d composer: restructure to implement account switching
Extract some functionality of the composer constructor into a
account-specific setup function that can be used to implement account
switching.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-19 21:25:18 +02:00
Robin Jarry b31bb1876b msgviewer: fix segfault when closing viewer
There is a race between PartViewer.Cleanup and PartViewer.Draw. pv.term
may be not nil in Draw and Cleanup() may set it to nil before
pv.term.Draw() is called, causing an invalid memory access:

[signal SIGSEGV: segmentation violation code=0x1 addr=0x29 pc=0x9413b8]

git.sr.ht/~rjarry/aerc/widgets.(*Terminal).Draw(0x0?, 0x0?)
	git.sr.ht/~rjarry/aerc/widgets/terminal.go:97 +0x18
git.sr.ht/~rjarry/aerc/widgets.(*PartViewer).Draw(0xc00012a540, 0xc0026ea690)
	git.sr.ht/~rjarry/aerc/widgets/msgviewer.go:862 +0x2fd

There is no need to reset term to nil.

Fixes: 77f69501d6 ("msgviewer: properly close embedded terminal")
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
2022-09-19 21:25:13 +02:00
Tim Culverhouse cb84df09f6 terminal: don't invalidate on EventWidgetContent
The terminal widget uses it's own internal event handler to redraw
itself for improved performance. The event handler draws, updates the
screen, and invalidates. The last invalidate is redundant: Invalidating
has the result of telling aerc to redraw the screen. A race condition
can occur where an event is emitted from the terminal and the terminal
is closed before the event is handled. This results in handling the
event after the terminal is closed, and a panic:

panic: Attempted to invalidate unknown cell

goroutine 54685 [running]:
git.sr.ht/~rjarry/aerc/lib/ui.(*Grid).cellInvalidated(0xc00b0a34a0, {0xbb8f10?, 0xc00360cd80})
	git.sr.ht/~rjarry/aerc/lib/ui/grid.go:287 +0x175
git.sr.ht/~rjarry/aerc/lib/ui.(*Invalidatable).DoInvalidate(0xc0002e7900?, {0xbb8f10?, 0xc00360cd80?})
	git.sr.ht/~rjarry/aerc/lib/ui/invalidatable.go:22 +0x82
git.sr.ht/~rjarry/aerc/widgets.(*Terminal).invalidate(...)
	git.sr.ht/~rjarry/aerc/widgets/terminal.go:93
git.sr.ht/~rjarry/aerc/widgets.(*Terminal).HandleEvent(0xc00360cd80, {0xbb4ba0?, 0xc006022690?})
	git.sr.ht/~rjarry/aerc/widgets/terminal.go:192 +0xd2
github.com/gdamore/tcell/v2/views.(*WidgetWatchers).PostEvent(...)
	github.com/gdamore/tcell/v2@v2.5.3/views/widget.go:113
github.com/gdamore/tcell/v2/views.(*WidgetWatchers).PostEventWidgetContent(0xc0001b9360, {0xbbc950?, 0xc0001b9320})
	github.com/gdamore/tcell/v2@v2.5.3/views/widget.go:123 +0x12b
git.sr.ht/~rockorager/tcell-term.(*Terminal).run.func1()
	git.sr.ht/~rockorager/tcell-term@v0.1.0/terminal.go:117 +0x9d
created by git.sr.ht/~rockorager/tcell-term.(*Terminal).run
	git.sr.ht/~rockorager/tcell-term@v0.1.0/terminal.go:104 +0x110

Don't invalidate on EventWidgetContent. The terminal already handles
drawing and updating the tcell Screen internally.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-19 21:25:11 +02:00
Tim Culverhouse f414db7858 terminal: protect calls to terminal methods throughout aerc
A race condition can occur when a PartViewer is closing and also working
on a draw. The closing process sets the terminal to nil, which will
create a panic. This can be tested in development by setting the timer
in the main aerc tick loop to something very low (1 ms for example).

One other unprotected call to terminal exists in the composer widget.

Check that the terminal is not nil before calling methods on it.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-19 21:25:09 +02:00
Tim Culverhouse 599b9f6d46 terminal: improve mouse support
Improve terminal mouse support by forwarding mouse events to the
terminal widget. Clicking and dragging are supported.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-15 20:59:13 +02:00
Robin Jarry 77f69501d6 msgviewer: properly close embedded terminal
The terminal widget already handles most boring stuff: unwatch terminal
events, kill the underlying process, wait for it to exit, etc. Call the
Close() method and be done with it.

This avoids issues where the embedded terminal widget is destroyed but
the pager process does not know about it and dies in agony, writing over
aerc's UI:

  Vim: Caught deadly signal HUP

Also, it may avoid leaving child processes as zombies without giving
them a proper burial.

Reported-by: skejg
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
2022-09-15 20:50:44 +02:00
Tim Culverhouse c7df28d632 terminal: check for context before calling it's methods
The terminal widget internally uses several context methods. Check that
context is not nil before calling any method to prevent panics.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-09-15 20:50:38 +02:00
Tim Culverhouse cf319129de term: add bracketed paste support
Allow forwarding paste events to embedded applications. When a bracketed
paste is in progress, do not process any command bindings.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
2022-09-14 22:19:42 +02:00
Tim Culverhouse 518f3e962c term: replace go-libvterm with tcell-term
Replace go-libvterm package with tcell-term. go-libvterm provides the
embedded terminal for aerc. It uses a statically linked C library,
requiring CGO.

tcell-term is written in pure go and is written to be portable with
tcell applications by implementing the tcell Widget interface. This
allows the terminal to take a view (which aerc already supplies) and
draw directly to it, as well as issue tcell Events to a Watcher.

Enable setting cursor shapes in embedded terminals.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
2022-09-14 22:18:35 +02:00
Robin Jarry ee7937d0dd ui: cleanup internals and api
Now that tcell events are handled in a goroutine, no need for a channel
to buffer them.

Rename ui.Tick() to ui.Render() and ui.Run() to ui.ProcessEvents() to
better reflect what these functions do.

Move screen.PollEvent() into ui.ProcessEvents(). Register the panic
handler in ui.ProcessEvents().

Remove aerc.ui.Tick() from DecryptKeys(). What the hell was that?

Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Tim Culverhouse <tim@timculverhouse.com>
2022-09-14 22:11:33 +02:00