xremap 0.5.0

Dynamic key remapp for X and Wayland
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trait Client {
    fn supported(&mut self) -> bool;
    fn current_application(&mut self) -> Option<String>;
}

pub struct WMClient {
    name: String,
    client: Box<dyn Client>,
    supported: Option<bool>,
    last_application: String,
}

impl WMClient {
    fn new(name: &str, client: Box<dyn Client>) -> WMClient {
        WMClient {
            name: name.to_string(),
            client,
            supported: None,
            last_application: String::new(),
        }
    }

    pub fn current_application(&mut self) -> Option<String> {
        if self.supported.is_none() {
            let supported = self.client.supported();
            self.supported = Some(supported);
            println!("application-client: {} (supported: {})", self.name, supported);
        }
        if !self.supported.unwrap() {
            return None;
        }

        let result = self.client.current_application();
        if let Some(application) = &result {
            if &self.last_application != application {
                self.last_application = application.clone();
                println!("application: {}", application);
            }
        }
        result
    }
}

#[cfg(feature = "gnome")]
mod gnome_client;
#[cfg(feature = "gnome")]
pub fn build_client() -> WMClient {
    WMClient::new("GNOME", Box::new(gnome_client::GnomeClient::new()))
}

#[cfg(feature = "sway")]
mod sway_client;
#[cfg(feature = "sway")]
pub fn build_client() -> WMClient {
    WMClient::new("Sway", Box::new(sway_client::SwayClient::new()))
}

#[cfg(feature = "x11")]
mod x11_client;
#[cfg(feature = "x11")]
pub fn build_client() -> WMClient {
    WMClient::new("X11", Box::new(x11_client::X11Client::new()))
}

#[cfg(not(any(feature = "gnome", feature = "sway", feature = "x11")))]
mod null_client;
#[cfg(not(any(feature = "gnome", feature = "sway", feature = "x11")))]
pub fn build_client() -> WMClient {
    WMClient::new("none", Box::new(null_client::NullClient))
}