148 lines
4.4 KiB
Rust
148 lines
4.4 KiB
Rust
//! Clock module: subscribes to the clock service, renders the time in the
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//! bar. Left-click toggles the seconds suffix — and pokes the running clock
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//! service to switch which kind it publishes; right-click opens a popup.
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use iced::widget::{container, mouse_area, text};
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use iced::{Element, Task};
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use common::{BarModule, ClockKind, ClockMsg, ClockPayload, Endpoint, ModuleEffect, Service, Wire};
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use serde::Deserialize;
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use toml::Table;
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/// Big-text popup size (logical px).
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const POPUP_W: u32 = 360;
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const POPUP_H: u32 = 160;
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/// Errors digesting the `module.clock` config table.
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#[derive(Debug, thiserror::Error)]
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pub enum ClockError {
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/// Config value was present but not a bool.
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#[error("module.clock.{0} must be a bool")]
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NotBool(&'static str),
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}
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pub struct Clock {
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value: String,
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show_seconds: bool,
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}
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#[derive(Deserialize, Default)]
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struct ClockConfig {
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#[serde(default)]
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show_seconds: bool,
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}
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impl Clock {
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pub fn new(config: Option<Table>) -> Self {
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match config_clock(config) {
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Some(x) => Self {
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value: "--:--:--".to_string(),
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show_seconds: x.show_seconds,
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},
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None => Self::default(),
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}
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}
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/// Display string: HH:MM:SS, or HH:MM when seconds are hidden.
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fn shown(&self) -> String {
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if self.show_seconds {
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self.value.clone()
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} else {
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self.value
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.split(':') // [hh, mm, ss]
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.take(2)
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.collect::<Vec<_>>()
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.join(":")
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}
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}
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}
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impl Default for Clock {
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fn default() -> Self {
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Self {
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value: "--:--:--".to_string(),
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show_seconds: false,
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}
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}
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}
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fn config_clock(table: Option<Table>) -> Option<ClockConfig> {
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let clock = table?.get("clock")?.clone();
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clock.try_into().ok()
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}
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impl BarModule for Clock {
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fn id(&self) -> &'static str {
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"clock"
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}
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fn view(&self, window_id: Option<iced::window::Id>) -> Element<'_, Wire> {
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let me = Endpoint::module(self.id());
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match window_id {
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// Popup surface: current time in large text.
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Some(_) => container(text(&self.value).size(56)).padding(20).into(),
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// Bar surface: clickable time. Container carries the module id
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// so the popup can anchor to these bounds.
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None => container(
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mouse_area(text(self.shown()).size(16))
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.on_press(Wire::module(me, self.id(), ClockMsg::ToggleSeconds))
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.on_right_press(Wire::module(me, self.id(), ClockMsg::OpenPopup)),
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)
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.id(iced::widget::Id::from(self.id()))
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.into(),
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}
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}
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fn update(&mut self, msg: Wire) -> Task<ModuleEffect> {
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// The service publishes a raw `ClockPayload`; UI sends `ClockMsg`.
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if let Some(payload) = msg.downcast::<ClockPayload>() {
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self.value = payload.value.clone();
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return Task::none();
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}
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match msg.downcast::<ClockMsg>() {
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Some(ClockMsg::ToggleSeconds) => {
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self.show_seconds = !self.show_seconds;
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tracing::debug!(show_seconds = self.show_seconds, "clock toggle");
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let want = if self.show_seconds {
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ClockKind::Seconds
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} else {
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ClockKind::Mins
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};
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// Poke the running clock service: tell it which kind to publish.
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Task::done(ModuleEffect::Send(Wire::service(
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Endpoint::module(self.id()),
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ClockKind::Seconds.key().0,
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want,
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)))
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}
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Some(ClockMsg::OpenPopup) => Task::done(ModuleEffect::RequestPopup(
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self.id().to_string(),
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self.id().to_string(),
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)),
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None => Task::none(),
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}
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}
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fn services(&self) -> Vec<Service> {
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vec![ClockKind::Seconds.key()]
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}
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fn popup_size(&self) -> Option<(u32, u32)> {
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Some((POPUP_W, POPUP_H))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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/// Regression: `new(None)` used to call `default()`, which called
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/// `new(None)` — infinite recursion (hard stack overflow) whenever the
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/// clock config was absent or failed to parse.
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#[test]
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fn no_config_terminates() {
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assert!(!Clock::new(None).show_seconds);
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assert!(!Clock::default().show_seconds);
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}
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}
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