mirror of
https://codeberg.org/Fl1tzi/microdeck.git
synced 2024-05-15 01:20:06 +00:00
277 lines
9.5 KiB
Rust
277 lines
9.5 KiB
Rust
use crate::{
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config::{Button, ConfigError, DeviceConfig, Space},
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modules::{start_module, HostEvent, MODULE_REGISTRY},
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unwrap_or_error,
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};
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use deck_driver as streamdeck;
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use hidapi::HidApi;
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use std::{collections::HashMap, fmt::Display, sync::Arc};
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use streamdeck::{
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asynchronous::{AsyncStreamDeck, ButtonStateUpdate},
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info::Kind,
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StreamDeckError,
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};
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use tokio::{
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process::Command,
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runtime::Runtime,
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sync::mpsc::{self, error::TrySendError},
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sync::Notify,
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};
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use tracing::{debug, error, info_span, trace, warn};
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/// A module controller in holding the information of a Module
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pub type ModuleController = (Arc<Button>, Option<mpsc::Sender<HostEvent>>);
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pub enum DeviceError {
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DriverError(StreamDeckError),
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Config(ConfigError),
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}
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impl Display for DeviceError {
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fn fmt(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
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match self {
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DeviceError::DriverError(e) => write!(formatter, "Driver: {}", e),
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DeviceError::Config(e) => write!(formatter, "Config: {}", e),
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}
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}
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}
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impl Display for Device {
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fn fmt(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
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write!(formatter, "{}", self.serial)
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}
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}
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/// Handles everything related to a single device
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pub struct Device {
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modules: HashMap<u8, ModuleController>,
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device: Arc<AsyncStreamDeck>,
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modules_runtime: Option<Runtime>,
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config: DeviceConfig,
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spaces: Arc<HashMap<String, Space>>,
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selected_space: Option<String>,
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is_dead: Arc<Notify>,
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serial: String,
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}
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impl Device {
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pub async fn new(
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serial: String,
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kind: Kind,
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device_conf: DeviceConfig,
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is_dead: Arc<Notify>,
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spaces: Arc<HashMap<String, Space>>,
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hid: &HidApi,
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) -> Result<Device, DeviceError> {
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// connect to deck or continue to next
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let deck = match AsyncStreamDeck::connect(hid, kind, &serial) {
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Ok(deck) => deck,
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Err(e) => return Err(DeviceError::DriverError(e)),
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};
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// set brightness
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deck.set_brightness(device_conf.brightness).await.unwrap();
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// reset
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deck.reset().await.unwrap();
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// initialize buttons
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let button_count = kind.key_count();
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// CONFIG VALIDATING
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for button in device_conf.buttons.as_slice().into_iter() {
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let _span_button = info_span!("button", index = button.index).entered();
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// if the index of the button is higher than the button count
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if button_count < button.index {
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return Err(DeviceError::Config(ConfigError::ButtonDoesNotExist(
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button.index,
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)));
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}
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}
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Ok(Device {
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modules: HashMap::new(),
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device: deck,
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modules_runtime: None,
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config: device_conf,
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spaces,
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selected_space: None,
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is_dead,
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serial,
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})
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}
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/// Create the runtime for all the modules and iterate through all the buttons to create their
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/// modules.
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pub async fn init_modules(&mut self) {
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if self.modules_runtime.is_none() {
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self.modules_runtime = Some(Runtime::new().unwrap());
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}
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// TODO: DO THIS WITHOUT CLONING! Currently takes up a big amount of memory.
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let button_config = match &self.selected_space {
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Some(s) => self
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.spaces
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.get(s)
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.unwrap_or_else(|| {
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warn!("The space \"{}\" was not found", s);
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&self.config.buttons
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})
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.to_owned(),
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None => self.config.buttons.to_owned(),
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};
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for i in 0..button_config.len() {
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let button = button_config.get(i).unwrap().to_owned();
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unwrap_or_error!(self._create_module(button).await);
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}
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}
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/// spawn the module onto the runtime
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async fn _create_module(&mut self, btn: Arc<Button>) -> Result<(), DeviceError> {
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let runtime = self
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.modules_runtime
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.as_ref()
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.expect("Runtime has to be created before module can be spawned");
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let (module_sender, module_receiver) = mpsc::channel(4);
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if let Some(module) = MODULE_REGISTRY.get_module(&btn.module) {
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{
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// initialize the module
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let ser = self.serial.clone();
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let dev = self.device.clone();
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let b = btn.clone();
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runtime.spawn(
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async move { start_module(ser, b, *module, dev, module_receiver).await },
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);
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}
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// if the receiver already dropped the listener then just directly insert none.
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// Optimizes performance because the key_listener just does not try to send the event.
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if module_sender.is_closed() {
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self.modules.insert(btn.index, (btn.clone(), None));
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} else {
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self.modules
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.insert(btn.index, (btn.clone(), Some(module_sender)));
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}
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return Ok(());
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} else {
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return Err(DeviceError::Config(ConfigError::ModuleDoesNotExist(
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btn.index,
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btn.module.to_owned(),
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)));
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}
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}
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pub fn serial(&self) -> String {
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self.serial.clone()
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}
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/// Shutdown the runtime and therefore kill all the modules and
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/// note death in field [self.is_dead].
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fn drop(&mut self) {
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debug!("Dropped device");
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self.shutdown_modules();
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// notify main that this device is dead now
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self.is_dead.notify_one();
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}
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/// shutdown the runtime and therefore kill all the modules.
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fn shutdown_modules(&mut self) {
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if let Some(handle) = self.modules_runtime.take() {
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handle.shutdown_background();
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}
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self.modules = HashMap::new();
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}
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/// listener for button press changes on the device
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#[tracing::instrument(skip_all, fields(serial = self.serial))]
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pub async fn key_listener(&mut self) {
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let reader = self.device.get_reader();
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loop {
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match reader.read(7.0).await {
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Ok(v) => {
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trace!("{:?}", v);
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for update in v {
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self.button_state_update(update).await;
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}
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}
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Err(e) => match e {
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StreamDeckError::HidError(e) => {
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error!("Shutting down device because of: {e}");
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self.drop();
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break;
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}
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_ => error!("{e}"),
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},
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}
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}
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}
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/// Switch to a space. This will tear down the whole runtime of the current space.
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#[tracing::instrument(skip_all, fields(serial = self.serial))]
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async fn switch_to_space(&mut self, name: String) {
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debug!("Switching to space {}", name);
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if name.to_lowercase() == "home" {
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self.selected_space = None
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} else {
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self.selected_space = Some(name)
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}
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self.shutdown_modules();
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for key in 0..self.device.kind().key_count() {
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self.device.clear_button_image(key).await.unwrap();
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}
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self.init_modules().await;
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}
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/// Handle all incoming button state updates from the listener (shell actions, module sender)
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async fn button_state_update(&mut self, event: ButtonStateUpdate) {
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// get the index out of the enum...
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let index = match event {
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ButtonStateUpdate::ButtonUp(i) => i,
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ButtonStateUpdate::ButtonDown(i) => i,
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};
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// try to get config for the module
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let options = match self.modules.get_mut(&index) {
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Some(options) => options,
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None => return,
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};
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// action will only be some if on_click/on_release is specified in config
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let (action, event) = match event {
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ButtonStateUpdate::ButtonDown(_) => (&options.0.on_click, HostEvent::ButtonPressed),
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ButtonStateUpdate::ButtonUp(_) => (&options.0.on_release, HostEvent::ButtonReleased),
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};
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// try to send to module and drop the sender if the receiver was droppped
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if let Some(sender) = options.to_owned().1 {
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if send_to_channel(&sender, event).await == false {
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trace!("Sender of button {index} dropped");
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options.1 = None
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}
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}
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// if config includes custom actions execute them
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if let Some(action) = action {
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execute_sh(&action).await
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}
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// switch space if needed
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if options.0.module == "space" {
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let name = match options.0.options.get("name") {
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Some(n) => n.clone(),
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None => return,
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};
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self.switch_to_space(name).await;
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}
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}
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}
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pub async fn execute_sh(command: &str) {
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match Command::new("sh").arg("-c").arg(command).spawn() {
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Ok(_) => debug!("Command \'{}\' returned", command),
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Err(_) => error!("Command \'{}\' failed", command),
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}
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}
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/// try to send an event to the module channel.
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/// If the module dropped the listener this will return false.
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pub async fn send_to_channel(sender: &mpsc::Sender<HostEvent>, event: HostEvent) -> bool {
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if let Err(e) = sender.try_send(event) {
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match e {
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TrySendError::Full(_) => trace!("Buffer full: {:?}", e),
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TrySendError::Closed(_) => return false,
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}
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}
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true
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}
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