Adds two style options: dirlist_unread and dirlist_recent. These options
apply in layers, in the same way as msglist_* styles do.
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Show what command can be used to achieve the described effect so users
can add it as a binding.
Fixes: https://todo.sr.ht/~rjarry/aerc/40
Signed-off-by: kt programs <ktprograms@gmail.com>
Tested-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Refactor statusline by clearly separating the rendering part from the
text display. Use printf-like format string for statusline
customization.
Document printf-like format string to customize the statusline.
Allow to completely mute the statusline (except for push notifications)
with a format specifier.
Provide a display mode with unicode icons for the status elements.
Implements: https://todo.sr.ht/~rjarry/aerc/34
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Use contextual ui styleset for tabs and compose widgets. If no account
is selected, use default styleset as fallback.
Fixes: https://todo.sr.ht/~rjarry/aerc/3
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Also show commands that don't have a binding.
This allows users to see what's available to bind.
Signed-off-by: kt programs <ktprograms@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
There is an issue with backends, that provide dynamic folders, namely
when opening folder, that isn't defined in config file, you get empty
folder. To actually get messages listed, you need to open that folder
twice.
At first attempt only DirectoryInfo is fetched and new
MessageStore created. Second attempt populates previously created
MessageStore with list of messages.
For pre-configured folders, DirectoryInfos are fetched upon connection
to backend and, when folder is opened, MessageStore is updated with list
of messages.
Fixes: https://todo.sr.ht/~rjarry/aerc/30
Signed-off-by: Aivars Vaivods <aivars@vaivods.lv>
Acked-by: Robin Jarry <robin@jarry.cc>
Keep the sort criteria applied to the selected folder until the default
sort order should be restored. Call the sort command without arguments
to restore the default sort order.
The current behavior is that the default sort order is restored as soon
as the folder reloads. This happens often and then the results of the
sort command are lost. This makes the sort command not very
user-friendly. Instead, we should keep the sort criteria applied until
the user explicitly wants to restore the default sort order again.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Update statusline only for the selected account (to prevent other
updates from different accounts to interfere). Update status when
jumping/selecting/closing tabs.
Fixes cosmetic regressions introduced by commit feecc09b73
("statusline: make statusline folder-specific").
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Allow saving all message parts that have the content disposition
"attachment" header to a folder.
Suggested-by: Ondřej Synáček <ondrej@synacek.org>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Moritz Poldrack <moritz@poldrack.dev>
If a panic occurs in one of the workers, it can happen after the UI was
initialised, but before the cleanup function has been registered. With
this the start of the worker loops is deferred until the cleanup routine
was registered.
Signed-off-by: Moritz Poldrack <git@moritz.sh>
Since panics still regularly "destroy" the terminal, it is hard to get a
stack trace for panics you do not anticipate. This commit adds a panic
handler that automatically creates a logfile inside the current working
directory.
It has to be added to every goroutine that is started and will repair
the terminal on a panic.
Signed-off-by: Moritz Poldrack <git@moritz.sh>
Acked-by: Robin Jarry <robin@jarry.cc>
Make statusline folder-specific. Update filter, search and threading
status when changing folders.
Commit 2512c04 ("statusline: implement per-account status") introduced
an account-specific statusline. This makes it account- and
folder-specific.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Moritz Poldrack <moritz@poldrack.dev>
Focusing header editors was hardcoded as integers which only worked with
the default ui. If a user changed the UI to, for example, put CC as a
field below "to", FocusSubject would focus the CC field instead of the
subject. This commit reuses and modifies the function FocusEditor to
generalize the focusing of header editors - which can now be called by
name via FocusEditor(name string)
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Update message counter in msglist when the filter is changed (either set or
cleared in the msgstore).
When we apply a filter, we change the number of uids in the message
store. This can unintentionally trigger the storeUpdate() function of
the msglist which checks the number of uids for new messages and
advances the pointer by the difference in the number of messages. This
can be avoided when we update the message counter upon changing the
filter.
Fixes: https://todo.sr.ht/~rjarry/aerc/23
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Update statusline only when changed to reduce cpu usage.
commit 2512c0403f ("statusline: implement per-account status") updates
the status irrespective of whether the statusline changed or not. This
can lead to high cpu usage that can be avoided.
Reported-by: Jens Grassel <jens@wegtam.com>
Reported-by: inwit <inwit@sindominio.net>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Implement a statusline state for each account. Keep the ex line and the
push notifications global. Add account name prefix to push
notifications. Prefix status line with account name when multiple
accounts are available.
Use account-specific status line for each tab where an account is
defined.
Handle threading, filter/search, viewer passthrough and connection
status.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
This commit fixes all occurrences of the abovementioned lint-error in
the codebase.
Signed-off-by: Moritz Poldrack <git@moritz.sh>
Acked-by: Robin Jarry <robin@jarry.cc>
Allow a mailto link to open a new composer even if no recipient is in
the url.
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Tested-by: Moritz Poldrack <git@moritz.sh>
When trying to search in less, keys bound to viewer functions can't be
used as part of the search query, which makes the search useless.
Add a view::passthrough binding mode and a :toggle-key-passthrough
command go toggle in and out of that mode. By default, typing '/' in the
viewer is bound to enabling key passthrough and automatically inserting
'/', to easily enter "less" search mode. When in the passthrough mode,
all bindings are ignored by default. The default binds.conf only defines
a single keybinding in that mode: <Esc> to get back out. $ex is bound to
<C-x> to allow typing colons.
Signed-off-by: Kt Programs <ktprograms@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
Extract the vertical scrolling ability into its own Scrollable struct
that can be embedded and reused across any ui element that relies on
scrolling.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
aerc.SelectedAccount() is used in lots of places. Most of them without
checking the return value.
In some cases, the currently selected tab is not related to any account
(widget.Terminal for example). This can lead to unexpected crashes when
accessing account specific configuration.
When possible, return an error when no account is currently selected.
If no error can be returned, fallback to non-account specific
configuration.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Reviewed-by: Koni Marti <koni.marti@gmail.com>
implement message threading on the message store level using the
jwz algorithm. Build threads on-the-fly when new message headers arrive.
Use the references header to create the threads and the in-reply-to
header as a fall-back option in case no references header is present.
Does not run when the worker provides its own threading (e.g. imap
server threads).
Include only those message headers that have been fetched and are
stored in the message store.
References: https://www.jwz.org/doc/threading.html
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Inwit <inwit@sindominio.net>
Tested-by: akspecs <akspecs@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
implement a foldable tree for the directory list. Expand all parent
directories when a hidden directory is selected with the change-folder
command.
folders-sort considers the top-level directories only. The folders and
foldersexclude filters work with the full directory path.
Enable tree view by adding 'dirlist-tree=true' to the config file.
Implements: https://todo.sr.ht/~sircmpwn/aerc2/228
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Add an extra attribute to the status line. When non-empty, display it
after the current status.
Set that extra status after a successful :search or :filter. Remove it
after :clear.
Signed-off-by: Robin Jarry <robin@jarry.cc>
improves the robustness of the imap reconnect feature which was
introduced in commit beae17a6da ("imap: auto-reconnects on connection
error").
If a connection error is emitted, the message list is cleared and a
corresponding error message is shown in the ui. Status bar is updated as
well. Upon reconnect, the directories and the message list will be
re-fetched (same behavior as the connect command).
Reconnect can be enabled and disabled with the connect and the
disconnect commands.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Parse the actual user bindings to determine what shortcuts are available
in the compose::review stage. Add a predefined list of commands for
which we want to display the keyboard shortcuts.
Fixes: https://todo.sr.ht/~rjarry/aerc/14
Signed-off-by: Robin Jarry <robin@jarry.cc>
1 second is a bit excessive. Use 200ms which should cover most quick
folder changes.
Add an option to make that delay configurable by the users.
References: https://todo.sr.ht/~rjarry/aerc/16
Fixes: cb3090956c ("dirlist: skip unnecessary change-folder action")
Suggested-by: Koni Marti <koni.marti@gmail.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
when traversing the directory list, aerc will fetch the contents for
every directory even though the user might just move on to the next.
This causes an unnecessary delay (and load on the worker) and can be
avoided by skipping the old change-folder action when a newer one
arrives within a predefined time interval.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
improves change-folder responsiveness. When changing folders, the
highlighted directory is currently updated in a callback function to the
open-directory action. This creates an unpleasent lag in the ui until
the entire operation is done. Instead, we should provide an immediate
visual feedback of the selection to the user and keep loading the
directory contents in the background.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
pty.Getsize() is used in the Draw function of the terminal widget and wraps the
pty.GetsizeFull() function. However, pty.Getsize does not check the returned
error from pty.GetsizeFull before dereferencing the winsize struct. In case of
an error, this will cause a nil pointer deference and panic.
This has been reported in the upstream package, but in the meantime, we can
directly use pty.GetsizeFull.
References: https://todo.sr.ht/~rjarry/aerc/11
Signed-off-by: Koni Marti <koni.marti@gmail.com>
if the worker emits a connection error, the ui will automatically send back a
reconnect command. The worker then establishes a new connection. Auto-reconnect
is disabled when the user sends the disconnect command.
Fixes: https://todo.sr.ht/~rjarry/aerc/1
Signed-off-by: Koni Marti <koni.marti@gmail.com>
implements a new connection error message. This allows the worker to emit a
connection-related error message to the ui when the imap client closes the
loggedOut channel.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
fixes the segmentation fault when copy-pasting a large text into the
composer editor. The problem is a concurrent read of the vterm field in the
Terminal widget in its flushTerminal() method which can be avoided with a mutex.
Fixes: https://todo.sr.ht/~rjarry/aerc/12
Signed-off-by: Koni Marti <koni.marti@gmail.com>
as per the discussion https://lists.sr.ht/~sircmpwn/aerc/patches/15367
this handles completions in `completer/completer.go` by enabling the
completer to return a `prefix` that will be prepended to the selected
completion candidate.
implements PGP/MIME encryption with go-pgpmail. The Encrypt() function of
go-pgpmail requires a list of public keys which are taken from the
keystore. The keystore is searched for the email addresses of all
recipients (to, cc, and bcc).
If you want to be able to read the encrypted email afterwards, add
yourself as a recipient in either to, cc, or bcc as well.
Public keys can be exported from gpg into aerc as follows:
$ gpg --export >> ~/.local/share/aerc/keyring.asc
When composing a message, the encryption is enabled with the
":encrypt" command. This sets a bool flag in the Composer struct.
A reapted application of this command will toggle the flag.
The encrypted message can also be signed by using the ":sign"
command before or after ":encrypt".
References: https://todo.sr.ht/~rjarry/aerc/6
Signed-off-by: Koni Marti <koni.marti@gmail.com>
implements PGP/MIME signing with go-pgpmail. The Sign() function of
go-pgpmail requires a private (signing) key. The signing key which matches
the senders email address (from field in email header) is looked up
in aerc's copy of the keyring.
Private keys can be exported from gpg into aerc as follows:
$ gpg --export-secret-keys >> ~/.local/share/aerc/keyring.asc
A message is signed with the ":sign" command. The sign command sets
a bool flag in the Composer struct. Using the command repeatedly will
toggle the flag.
References: https://todo.sr.ht/~rjarry/aerc/6
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Replaces golang.org/x/crypto with github.com/ProtonMail/go-crypto
consistently and updates go-pgpmail to v0.2.0
Signed-off-by: Koni Marti <koni.marti@gmail.com>
When using aerc for multiple accounts often bindings might differ
slightly between accounts. For example:
* Account A archives to one directory (:archive)
* Account B archives to monthly directories (:archive month)
Add account specific bindings to allow the user to add a "context" to a
binding group using a context specifier and a regular expression.
Currently the only context specifier is 'account'.
The regular expression is validated against the accounts loaded from
accounts.conf and the configuration fails to load if there are no
matches.
Contextual bindings are merged with global bindings, with contextual
bindings taking precedence, when that context is active.
Bindings are be configured using a generic pattern of
'view:context=regexp'. E.g.:
# Globally Applicable Archiving
[messages]
A = :read<Enter>:archive<Enter>
# Monthly Archiving for 'Mailbox' Account
[messages:account=Mailbox$]
A = :read<Enter>:archive month<Enter>
In the above example all accounts matching the regular expression will
archive in the monthly format - all others will use the global binding.
Signed-off-by: Jonathan Bartlett <jonathan@jonnobrow.co.uk>
New border-char-horizontal and border-char-vertical config settings in
aerc.conf allow users to modify border appearance from the default
1-wide/tall blank space. In stylesets, border.fg now affects the
foreground color when custom characters are defined.
Signed-off-by: Robin Jarry <robin@jarry.cc>
When using the notmuch backend, it often makes more sense to sort
folders (actual virtual folders, or queries) by the order specified in
the query-map file, rather than alphabetically. This patch introduces a
configuration option (disabled by default) that allows this.
Additionally, due to the notmuch backend previously using maps (which
are order-undefined) to store the list of queries, default query
selection on aerc startup fluctuated. This patch fixes that by using
slices to store query order.
Display threads in the message list. For now, only supported by the
notmuch backend and on IMAP when the server supports the THREAD
extension.
Setting threading-enable=true is global and will cause the message list
to be empty with maildir:// accounts.
Co-authored-by: Kevin Kuehler <keur@xcf.berkeley.edu>
Co-authored-by: Reto Brunner <reto@labrat.space>
Signed-off-by: Robin Jarry <robin@jarry.cc>
When composing a message, there is an empty fill line between the
headers and the text editor. The line is printed with the default style
which may cause users to assume it is part of the editor.
Display the fill lines with the border color to avoid confusion.
Signed-off-by: Robin Jarry <robin@jarry.cc>
When a message has been sent today (or this year) allow formatting the
date differently.
For example, with:
[ui]
index-format=%-25.25n %-25.25D %s
timestamp-format=2006 Jan 02, 15:04 GMT-0700
this-day-time-format=Today at 15:04
this-year-time-format=Jan 02
The message list would look like this (spaces collapsed):
Robin Jarry Today at 16:30 [PATCH 1/2] bindings: prepare for more modifers
bugzilla@dpdk.org Oct 26 [dpdk-dev] [Bug 839] pdump: any subsequent runs of pdump_autotest fail
Holger Levsen 2020 Mar 15, 13:44 GMT+01 +1 (Re: FTP Team -- call for volunteers)
Signed-off-by: Robin Jarry <robin@jarry.cc>
In addition of the common headers (subject, to, from, cc), allow
matching arbitrary email headers in filters. E.g.:
x-bugzilla-severity,critical=tput setaf 1; cat;tput sgr0
Signed-off-by: Robin Jarry <robin@jarry.cc>
This fixes a substantial performance issue when scrolling emails with
long/complicated contents, where scrolling down a single line can take
something like hundreds of ms before the screen is updated to reflect
the scroll. It's really bad if the email has lots of columns, e.g. like
if it's an html email that was passed through a filter (w3m, etc) to
render it.
Using pprof, I found that the multiple calls to vterm.ScreenCell.Attrs()
in styleFromCell were really really expensive. This patch replaces them
with a single call.
Here's a before and after with a simple, but very manual test of opening
a large email with contents that went through a w3m filter and
continuously scrolling up and down over and over for ~30 seconds:
*** Before:
----------------------------------------------------------+-------------
flat flat% sum% cum cum% calls calls% + context
----------------------------------------------------------+-------------
28.25s 100% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.PartSwitcher.Draw
0 0% 99.94% 28.25s 82.31% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.PartViewer.Draw
28.25s 100% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.Terminal.Draw
----------------------------------------------------------+-------------
28.25s 100% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.PartViewer.Draw
0 0% 99.94% 28.25s 82.31% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.Terminal.Draw
19.23s 68.07% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.Terminal.styleFromCell
6.04s 21.38% | github.x2ecom..z2fddevault..z2fgo..z2dlibvterm.Screen.GetCellAt
1.38s 4.88% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2flib..z2fui.Context.Printf
0.62s 2.19% | runtime.mapassign
0.43s 1.52% | runtime.mapaccess2
0.20s 0.71% | runtime.newobject
0.19s 0.67% | runtime.callers (inline)
0.07s 0.25% | runtime.makeslice
0.07s 0.25% | runtime.mallocgc
----------------------------------------------------------+-------------
19.23s 100% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.Terminal.Draw
0 0% 99.94% 19.23s 56.03% | git.x2esr.x2eht..z2f..z7esircmpwn..z2faerc..z2fwidgets.Terminal.styleFromCell
19.21s 99.90% | github.x2ecom..z2fddevault..z2fgo..z2dlibvterm.ScreenCell.Attrs
*** After:
----------------------------------------------------------+-------------
flat flat% sum% cum cum% calls calls% + context
----------------------------------------------------------+-------------
0.31s 100% | git.x2esr.x2eht/~sircmpwn/aerc/widgets.Terminal.Draw
0 0% 99.87% 0.31s 1.33% | github.x2ecom/ddevault/go-libvterm.NewPos
0.25s 80.65% | runtime.callers (inline)
0.04s 12.90% | runtime.gomcache (inline)
----------------------------------------------------------+-------------
8.40s 100% | github.x2ecom/ddevault/go-libvterm.Screen.GetCellAt
0 0% 99.87% 8.40s 36.11% | github.x2ecom/ddevault/go-libvterm.Screen.GetCell
7.14s 85.00% | github.x2ecom/ddevault/go-libvterm._cgoCheckPointer
0.54s 6.43% | runtime.callers (inline)
0.35s 4.17% | runtime.exitsyscall
0.11s 1.31% | runtime.deferprocStack
0.07s 0.83% | doentersyscall
0.07s 0.83% | runtime.getg
0.05s 0.6% | runtime.casgstatus
0.03s 0.36% | _init
0.03s 0.36% | runtime.gomcache (inline)
----------------------------------------------------------+-------------
8.46s 100% | git.x2esr.x2eht/~sircmpwn/aerc/widgets.Terminal.Draw
0 0% 99.87% 8.46s 36.37% | github.x2ecom/ddevault/go-libvterm.Screen.GetCellAt
8.40s 99.29% | github.x2ecom/ddevault/go-libvterm.Screen.GetCell
0.06s 0.71% | runtime.callers (inline)
----------------------------------------------------------+-------------
0.31s 100% | git.x2esr.x2eht/~sircmpwn/aerc/widgets.Terminal.styleFromCell
0 0% 99.87% 0.31s 1.33% | github.x2ecom/ddevault/go-libvterm.ScreenCell.Attrs
)
Also update to the tcell v2 PaletteColor api, which should keep the chosen
theme of the user intact.
Note, that if $TRUECOLOR is defined and a truecolor given, aerc will now stop
clipping the value to one of the theme colors.
Generally this is desired behaviour though.
Prior to this commit, the composer was based on a map[string]string.
While this approach was very versatile, it lead to a constant encoding / decoding
of addresses and other headers.
This commit switches to a different model, where the composer is based on a header.
Commands which want to interact with it can simply set some defaults they would
like to have. Users can overwrite them however they like.
In order to get access to the functions generating / getting the msgid go-message
was upgraded.
Allow styles to be layered over a base style. The list of styles to
apply is layered over the base style in order, such that if the layer
does not differ from the base it is not used. The order that these
styles are applied in is, from first to last:
msglist_default
msglist_unread
msglist_read (exclusive with unread, so technically the same level)
msglist_flagged
msglist_deleted
msglist_marked
So, msglist_marked style dominates.
This fixes an issue where the msglist_deleted style was not being applied.
There is a window where a new dir entry isn't yet in the dirlist.dir.
dirlist.ensureScroll however expected to always find a valid index.
Add a check so that we don't try to scroll to a -1 index.
This allows us to hook into the std libs implementation of parsing related stuff.
For this, we need to get rid of the distinction between a mailbox and a host
to just a single "address" field.
However this is already the common case. All but one users immediately
concatenated the mbox/domain to a single address.
So this in effects makes it simpler for most cases and we simply do the
transformation in the special case.
The `:rmdir` command removes the current directory (`-f` is required if
the directory is not empty).
This is not supported on the notmuch backend.
An issue with the maildir backend is that some sync programs (e.g.
offlineimap) may recover the directory after it is deleted. They need
to specifically be configured to accept deletions, or special commands
need to be executed (e.g. `offlineimap --delete-folder`) to properly
delete folders.
A danger of using this on the IMAP backend is that it is possible for a
new message to be added to the directory and for aerc to not show it
immediately (due to a slow connection) - using `:rmdir` at this moment
(with `-f` if the directory already contains messages) would delete the
directory and the new message that just arrived (and all other
contents). This is documented in aerc(1) so that users are aware of
possible risks.
This can happen for example if aerc is compiled without notmuch support but the
notmuch worker is requested.
Pushing a status message isn't good enough, as this gets overridden pretty
quickly if one has multiple accounts configured.
So we show a fullscreen error instead.
Introduce the ability to configure stylesets, allowing customization of
aerc's look (color scheme, font weight, etc). Default styleset is
installed to /path/to/aerc/stylesets/default.
Introduce the ability to configure stylesets, allowing customization of
aerc's look (color scheme, font weight, etc). Default styleset is
installed to /path/to/aerc/stylesets/default.
some people send around huge html without any newline in between.
This did overflow the default 64KB buffer of bufio.Scanner.
If something can't fit in a GB there's no hope left
Also, ignoring errors is bad mkey
Aerc usually used the path []int{1} if it didn't know what the proper path is.
However this only works for multipart messages and breaks if it isn't one.
This patch removes all the hard coding and extracts the necessary helpers to lib.
Added a 'folders-exclude' option that allows removing selected folders
from the directory list sidebar. My motivating example was that removing
a single folder from the list using Golang regexes seemed pretty hard,
so this is a better way to do it. The excluded folders list is included
in the man page.
This changes the scrolling to be done on the draw, when the height is
updated, ensuring that the selected item is kept on screen during
resizing.
Also, this ensures that messages will fill the screen when resizing the
window, for instance, shrinking and then growing drags down more
messages if possible.
This is a transplant of the dirlist scrolling logic.
The grid used static sizes which meant that changing settings didn't
have an effect on elements of the ui, notably the sidebar width. This
patch makes the `Size` parameter of a cell a function which returns the
`int`, allowing for dynamic sizes.
A `Const` function is also included for ease of use for static sizes.
The following functionalities are added to configure aerc ui styles.
- Read stylesets from file with very basic fnmatch wildcard matching
- Add default styleset
- Support different stylesets as part of UiConfig allowing contextual
styles.
- Move widgets/ui elements to use the stylesets.
- Add configuration manual for the styleset
