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* ui: fix deadlocks in message channelRobin Jarry2023-05-201-17/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several ways the ui message channel can fill up leading to deadlocks. 1) Invalidate() changes the value of uiState to DIRTY. The following call sequence: QueueRedraw() Invalidate() QueueRedraw() Leads to multiple nil messages being queued in the message channel whereas one could assume that the second QueueRedraw() would do nothing. This is caused by the tri-state nature of uiState. 2) We use the same channel to convey state change, keyboard events and redraw requests. Since a keyboard event almost always triggers a redraw, we end up trying to append a redraw message in the same goroutine that reads from the channel. This triggers a deadlock when there are more than 50 pending messages. Solve the issue by using multiple channels, one per type of message that needs to be sent to the main ui thread. Remove QueueRedraw() and merge its functionality in Invalidate(). Only use a DIRTY/CLEAN state to determine if something needs to be queued in the redraw channel. Use a channel for quitting instead of an atomic. Restructure some code functions to have a cleaner API. Use a for loop in the main thread and select from all channels. Signed-off-by: Robin Jarry <robin@jarry.cc> Tested-by: Koni Marti <koni.marti@gmail.com> Tested-by: Maarten van Gompel <proycon@anaproy.nl>
* commands: expand and complete template codeKoni Marti2023-05-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | Expand and complete template code. The exline does understand template code and can evaluate it. With this patch, the completion systems supports writing the templates by showing the available template data fields and template functions. Pressing <Tab> after }} will show the evaluated template in the completion menu. Complex template code, such as if-else statements work as well. Examples: :filter -f {{<Tab> will show the possible template data fields and functions :filter -f {{index (.To|email) 0}}<Tab> will show the value of the template expression in the completion list Pressing <Tab> twice after a completed template expression will substitute the expression with its value. :{{if match .Folder "INBOX"}}check-mail{{else}}cf INBOX{{end}} Signed-off-by: Koni Marti <koni.marti@gmail.com> Acked-by: Robin Jarry <robin@jarry.cc>
* commands: add OptionsProvider and OptionCompleterKoni Marti2023-05-161-4/+9
| | | | | | | | | | | | | | | | | | | Improve command completion by supporting option flags and option arguments completion. Option completion is activated when the command implements the OptionsProvider interface. Implementing the OptionCompleter allows the completion of individual option arguments. The completion interfaces harmonizes the completion behavior in aerc, makes the completion code clearer and simplifies the completion functionality. With this patch, the Complete method on commands will only have to deal with the actual completion, i.e. paths, folders, etc and not worry about options. To remove all options and its mandatory arguments from args, use commands.Operands(). Signed-off-by: Koni Marti <koni.marti@gmail.com> Acked-by: Robin Jarry <robin@jarry.cc>
* hooks: add aerc-shutdownMoritz Poldrack2023-04-011-0/+9
| | | | | | | | | | Add a hook to run when aerc shuts down. The environment is supplemented with the duration aerc was alive for. References: https://todo.sr.ht/~rjarry/aerc/136 Signed-off-by: Moritz Poldrack <git@moritz.sh> Signed-off-by: Robin Jarry <robin@jarry.cc> Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
* hooks: add aerc-startup hookMoritz Poldrack2023-04-011-0/+9
| | | | | | | | | | | Add a hook to run when aerc starts up. The environment is supplemented with aerc version and the path to its binary. References: https://todo.sr.ht/~rjarry/aerc/136 References: https://todo.sr.ht/~rjarry/aerc/139 Signed-off-by: Moritz Poldrack <git@moritz.sh> Signed-off-by: Robin Jarry <robin@jarry.cc> Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
* main: rename aerc.go -> main.goRobin Jarry2023-03-151-0/+263
I like it better that way. And it will not piss me off every time I need to use auto completion. Signed-off-by: Robin Jarry <robin@jarry.cc> Acked-by: Moritz Poldrack <moritz@poldrack.dev>