3e...

Cargo.lock

@@ -2137,7 +2137,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2559,8 +2559,10 @@ version = "0.9.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
+ "backtrace",
  "cfg-if",
  "libc",
+ "petgraph",
  "redox_syscall 0.5.18",
  "smallvec",
  "windows-link",
@@ -2620,6 +2622,16 @@ dependencies = [
  "pest",
 ]
 
+[[package]]
+name = "petgraph"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4c5cc86750666a3ed20bdaf5ca2a0344f9c67674cae0515bec2da16fbaa47db"
+dependencies = [
+ "fixedbitset",
+ "indexmap",
+]
+
 [[package]]
 name = "phf"
 version = "0.11.3"
@@ -3827,6 +3839,7 @@ dependencies = [
  "livi",
  "notify-debouncer-full",
  "palette",
+ "parking_lot 0.12.5",
  "proptest",
  "proptest-derive",
  "quanta",
@@ -3836,6 +3849,7 @@ dependencies = [
  "tek_proc",
  "tengri",
  "toml 0.9.12+spec-1.1.0",
+ "tracing-mutex",
  "uuid",
  "wavers",
  "winit",
@@ -3905,7 +3919,7 @@ dependencies = [
  "parking_lot 0.12.5",
  "rustix 1.1.4",
  "signal-hook",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4246,6 +4260,17 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-mutex"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64aed473bc9271d160dce1fda5daebec76bb740f9db452bf6c9682344a5e44c0"
+dependencies = [
+ "autocfg",
+ "lock_api",
+ "parking_lot 0.12.5",
+]
+
 [[package]]
 name = "tracing-subscriber"
 version = "0.3.23"

Cargo.toml

@@ -36,6 +36,8 @@ gtk       = { optional = true, version = "0.18.1" }
 
 notify-debouncer-full = "0.7.0"
 hotpath = "0.23"
+parking_lot = { version = "0.12.5", features = ["deadlock_detection"] }
+tracing-mutex = { version = "0.3.3", features = ["parking_lot"] }
 
 #once_cell = "1.19.0"
 #no_deadlocks = "1.3.2"

src/config.rs

@@ -0,0 +1,496 @@
+use crate::*;
+use std::path::PathBuf;
+use notify_debouncer_full::notify::{RecursiveMode, PollWatcher, Config as NotifyConfig, Watcher};
+
+/// Write initial contents of configuration.
+pub fn config_init (config: &Config) -> UsuallyRef<'static, ()> {
+    //println!("\r\ninit {}", quanta::Clock::new().raw());
+    config.clear();
+    let path = Config::CONFIG;
+    let defaults = Config::DEFAULTS;
+    config.stamp.store(quanta::Clock::new().raw(), Relaxed);
+    if config.find_file().is_none() {
+        //println!("Creating {path:?}");
+        std::fs::write(config.place_file()?, defaults)?;
+    }
+    Ok(if let Some(path) = config.find_file() {
+        //println!("Loading {path:?}");
+        let src = std::fs::read_to_string(&path)?;
+        src.as_str().each((), &mut move|ctx, item: &str|{
+            config_add(config, item);
+            Ok(ctx)
+        });
+    } else {
+        return Err(format!("{path}: not found").into())
+    })
+}
+
+/// Add statements to configuration from [Dsl] source.
+pub fn config_add <'a> (config: &'a Config, dsl: &'a str) -> UsuallyRef<'a, &'a Config> {
+    dsl.each(config, &mut move|ctx: &'a Config, item: &'a str|if let Some(expr) = item.expr()? {
+        //if let (Some(name), Some(body)) = (expr.tail()?.head()?, expr.tail()?.tail()?,) {
+        match expr.head()? {
+            Some("mode") => expr.tail()?.map(|tail|modes_add(&config.modes, tail)),
+            Some("keys") => expr.tail()?.map(|tail|load_bind(&config.binds, tail)),
+            Some("view") => expr.tail()?.map(|tail|load_view(&config.views, tail)),
+            _ => return Err(format!("Config::load: expected view/keys/mode expr, got: {item:?}").into())
+        }.transpose()?;
+        //}
+        Ok(config)
+    } else {
+        Err(format!("Config::add_one: tried to add empty item").into())
+    })
+}
+
+/// Register a mode.
+pub fn modes_add <'a> (modes: &Modes, expr: &'a str) -> UsuallyRef<'a, ()> {
+    let name = expr.head()?.ok_or("mode: missing name")?;
+    let body = expr.tail()?.ok_or("mode: missing body")?;
+    modes.0.write().unwrap().insert(
+        name.into(),
+        Arc::new(body.each(
+            Mode::default(),
+            move|mut mode: Mode, item: &str|{
+                mode_add(&mut mode, item)?;
+                Ok(mode)
+            }
+        )?));
+    Ok(())
+}
+
+/// Add a definition to the mode.
+///
+/// Supported definitions:
+///
+///   - (name ...) -> name
+///   - (info ...) -> description
+///   - (keys ...) -> key bindings
+///   - (mode ...) -> submode
+///   - ...        -> view
+///
+/// ```
+/// let mut mode: tek::Mode<std::sync::Arc<str>> = Default::default();
+/// mode.add("(name hello)").unwrap();
+/// ```
+pub fn mode_add <'a> (mode: &'a mut Mode, dsl: &'a str) -> PerhapsRef<'a, &'a mut Mode> {
+    Ok(Some(if let Ok(Some(expr)) = dsl.expr() && let Ok(Some(head)) = expr.head() {
+        //println!("Mode::add: {head} {:?}", expr.tail());
+        let tail = expr.tail()?.map(|x|x.trim()).unwrap_or("");
+        match head {
+            "mode" => {
+                let head = tail.head()?.ok_or("mode: missing name")?;
+                let body = tail.tail()?.ok_or("mode: missing body")?;
+                let modes = mode.modes.clone();
+                let submode = Mode::default();
+                let submode = body.each(submode, move|mut submode: Mode, item: &str|{
+                    mode_add(&mut submode, &item);
+                    Ok(submode)
+                })?;
+                modes.0.write().unwrap().insert(head.into(), Arc::new(submode));
+                mode
+            },
+            "keys" => {
+                dsl.each(mode, &mut |mode: &'a mut Mode, expr: &'a str|{
+                    mode.keys.push(expr.trim().into());
+                    Ok(mode)
+                })?
+            },
+            "name" => { mode.name.push(tail.into()); mode },
+            "info" => { mode.info.push(tail.into()); mode },
+            "view" => { mode.view.push(tail.into()); mode },
+            _      => { mode.view.push(expr.into()); mode },
+        }
+    } else if let Ok(Some(word)) = dsl.word() {
+        mode.view.push(word.into());
+        mode
+    } else {
+        return Err(format!("Mode::add: unexpected: {dsl:?}").into());
+    }))
+}
+
+/// Load custom view definition.
+pub fn load_view <'a> (views: &Views, expr: &'a str,) -> UsuallyRef<'a, ()> {
+    let name = expr.head()?.ok_or("view: missing name")?;
+    let body = expr.tail()?.ok_or("view: missing body")?;
+    views.write().unwrap().insert(
+        name.into(),
+        body.src()?.unwrap_or_default().into()
+    );
+    Ok(())
+}
+
+pub fn load_bind <'a> (binds: &Binds, expr: &'a str) -> Usually<()> {
+    let name = expr.head()?.ok_or("bind: missing name")?;
+    let body = expr.tail()?.ok_or("bind: missing body")?;
+    binds.write().unwrap().insert(name.into(), {
+        let mut map = Bind::new();
+        body.each((), &mut |_, item: &str|if item.expr().head() == Ok(Some("see")) {
+            // TODO
+            Ok(())
+        } else if let Ok(Some(_word)) = item.expr().head().word() {
+            let expr = item.expr()?;
+            let head = expr.head()?;
+            if let Some(event) = TuiKey::from_dsl(&head)?.to_crossterm() {
+                map.add(TuiEvent(event), Binding {
+                    commands:    [item.expr()?.tail()?.unwrap_or_default().into()].into(),
+                    condition:   None,
+                    description: None,
+                    source:      None
+                });
+                Ok(())
+            } else if Some(":char") == item.expr()?.head()? {
+                // TODO
+                return Ok(())
+            } else {
+                return Err(format!("Config::load_bind: invalid key: {:?}", item.expr()?.head()?).into())
+            }
+        } else {
+            return Err(format!("Config::load_bind: unexpected: {item:?}").into())
+        })?;
+        map
+    });
+    Ok(())
+}
+
+/// Configuration: mode, view, and bind definitions.
+///
+/// ```
+/// let config = tek::Config::default();
+/// ```
+///
+/// ```
+/// // Some dizzle.
+/// // What indentation to use here lol?
+/// let source = stringify!((mode :menu (name Menu)
+///   (info Mode selector.) (keys :axis/y :confirm)
+///   (view (bg (g 0) (bsp/s :ports/out
+///     (bsp/n :ports/in
+///       (bg (g 30) (bsp/s (fixed/y 7 :logo)
+///         (fill :dialog/menu)))))))));
+/// // Add this definition to the config and try to load it.
+/// // A "mode" is basically a state machine
+/// // with associated input and output definitions.
+/// tek::Config::default().add(&source).unwrap().get_mode(":menu").unwrap();
+/// ```
+#[derive(Default, Debug)]
+pub struct Config {
+    /// XDG base directories of running user.
+    pub dirs:  BaseDirectories,
+    /// Active collection of interaction modes.
+    pub modes: Modes,
+    /// Active collection of event bindings.
+    pub binds: Binds,
+    /// Active collection of view definitions.
+    pub views: Views,
+    /// Error caught during reloading 
+    pub error: RwLock<Option<Arc<str>>>,
+    /// Timestamp
+    pub stamp: AtomicU64,
+    /// Watcher
+    pub watch: RwLock<Option<PollWatcher>>
+}
+
+/// Collection of UI modes.
+///
+/// ```
+/// let mut modes = tek::Modes::default();
+/// assert_eq!(modes.len(), 0);
+/// let _ = modes.add(&":foo", &"(mode (name Foo) (info Bar))");
+/// assert_eq!(modes.len(), 1);
+/// ```
+#[derive(Default, Debug, Clone)]
+pub struct Modes(Arc<RwLock<BTreeMap<Arc<str>, Arc<Mode>>>>);
+
+/// Group of view and keys definitions.
+///
+/// ```
+/// let mode = tek::Mode::<std::sync::Arc<str>>::default();
+/// ```
+#[derive(Default, Debug)]
+pub struct Mode {
+    pub path:  PathBuf,
+    pub name:  Vec<Arc<str>>,
+    pub info:  Vec<Arc<str>>,
+    pub view:  Vec<Arc<str>>,
+    pub keys:  Vec<Arc<str>>,
+    pub modes: Modes,
+}
+
+impl Config {
+
+    /// Default configuration directory.
+    const CONFIG_DIR: &'static str = "tek";
+
+    /// Default configuration subdirectory.
+    const CONFIG_SUB: &'static str = "v0";
+
+    /// Default configuration file name.
+    const CONFIG:     &'static str = "tek.edn";
+
+    /// Default configuration contents.
+    const DEFAULTS:   &'static str = include_str!("tek.edn");
+
+    /// Create a new app configuration from a set of XDG base directories,
+    pub fn new (dirs: Option<BaseDirectories>) -> Self {
+        Self {
+            dirs: dirs.unwrap_or_else(||{
+                BaseDirectories::with_profile(Self::CONFIG_DIR, Self::CONFIG_SUB)
+            }),
+            stamp: quanta::Clock::new().raw().into(),
+            ..Default::default()
+        }
+    }
+
+    /// Create, initialize, and watch a new configuration.
+    pub fn watched <T: 'static> (callback: impl FnOnce(Arc<Config>)->T) -> Usually<T> {
+        let config = Self::init_new(None)?;
+        Self::watch(config.clone(), None)?;
+        let result = callback(config);
+        Ok(result)
+    }
+
+    /// Create and initialize a new configuration.
+    pub fn init_new (_dirs: Option<BaseDirectories>) -> UsuallyRef<'static, Arc<Self>> {
+        let config = Arc::new(Self::new(None));
+        config_init(&config)?;
+        Ok(config)
+    }
+
+    /// Watch a config's file for changes.
+    pub fn watch (config: Arc<Config>, poll: Option<Duration>) -> UsuallyRef<'static, ()> {
+        let handler = {
+            let config = config.clone();
+            move |result|match result {
+                Ok(_events) => if let Err(e) = config_init(&config) {
+                    *config.error.write().unwrap() = Some(format!("{e:?}").into());
+                    panic!("{e:?}");
+                } else {
+                    //println!("config updated");
+                },
+                Err(errors) => {
+                    panic!("{errors:?}");
+                }
+            }
+        };
+        let mut watcher = ::notify_debouncer_full::notify::poll::PollWatcher::new(
+            handler,
+            NotifyConfig::default()
+                .with_poll_interval(poll.unwrap_or(Duration::from_millis(250)))
+        )?;
+        if let Some(path) = config.get_file() {
+            //println!("watching: {path:?}");
+            watcher.watch(&path, RecursiveMode::NonRecursive)?;
+            *config.watch.write().unwrap() = Some(watcher);
+            Ok(())
+        } else {
+            Err(format!("no config path").into())
+        }
+    }
+
+    /// Find the config file.
+    fn find_file (&self) -> Option<PathBuf> {
+        self.dirs.find_config_file(Self::CONFIG)
+    }
+
+    /// Place config file in default location.
+    fn place_file (&self) -> Result<PathBuf, std::io::Error> {
+        self.dirs.place_config_file(Self::CONFIG)
+    }
+
+    /// Get path to config file.
+    fn get_file (&self) -> Option<PathBuf> {
+        self.dirs.get_config_file(Self::CONFIG)
+    }
+
+    /// Get a mode by name.
+    pub fn get_mode (&self, mode: impl AsRef<str>) -> Option<Arc<Mode>> {
+        self.modes.get(mode)
+    }
+
+    /// Print the configuration.
+    pub fn print (&self) {
+        print_config(self)
+    }
+
+    /// Make this configuration empty.
+    fn clear (&self) {
+        *self.modes.0.write().unwrap() = Default::default();
+        *self.views.write().unwrap() = Default::default();
+        *self.binds.write().unwrap() = Default::default();
+    }
+
+}
+
+pub use self::view::*;
+mod view {
+    use crate::*;
+    /// Collection of custom view definitions.
+    pub type Views = Arc<RwLock<BTreeMap<Arc<str>, Arc<str>>>>;
+}
+
+pub use self::mode::*;
+mod mode {
+    use crate::*;
+
+    impl Modes {
+        /// Get a mode by name.
+        pub fn get (&self, name: impl AsRef<str>) -> Option<Arc<Mode>> {
+            self.0.read().unwrap().get(name.as_ref()).cloned()
+        }
+        /// Run something for each mode.
+        pub fn for_each <T> (&self, mut ator: impl FnMut(&str, &Mode)->T) {
+            for (k, v) in self.0.read().unwrap().iter() {
+                let _ = ator(k.as_ref(), v.as_ref());
+            }
+        }
+        /// Count modes.
+        pub fn len (&self) -> usize {
+            self.0.read().unwrap().len()
+        }
+    }
+}
+
+pub use self::bind::*;
+mod bind {
+    use crate::*;
+
+    /// Collection of input bindings.
+    pub type Binds = Arc<RwLock<BTreeMap<Arc<str>, Bind<TuiEvent, Arc<str>>>>>;
+
+    /// An map of input events (e.g. [TuiEvent]) to [Binding]s.
+    ///
+    /// ```
+    /// let lang = "(@x (nop)) (@y (nop) (nop))";
+    /// let bind = tek::Bind::<tek::tengri::TuiEvent, std::sync::Arc<str>>::load(&lang).unwrap();
+    /// assert_eq!(bind.query(&'x'.into()).map(|x|x.len()), Some(1));
+    /// //assert_eq!(bind.query(&'y'.into()).map(|x|x.len()), Some(2));
+    /// ```
+    #[derive(Debug)]
+    pub struct Bind<E, C>(
+        /// Map of each event (e.g. key combination) to
+        /// all command expressions bound to it by
+        /// all loaded input layers.
+        pub BTreeMap<E, Vec<Binding<C>>>
+    );
+
+    /// A sequence of zero or more commands (e.g. [AppCommand]),
+    /// optionally filtered by [Condition] to form layers.
+    ///
+    /// ```
+    /// //FIXME: Why does it overflow?
+    /// //let binding: Binding<()> = tek::Binding { ..Default::default() };
+    /// ```
+    #[derive(Debug, Clone)] pub struct Binding<C> {
+        pub commands:    Arc<[C]>,
+        pub condition:   Option<Condition>,
+        pub description: Option<Arc<str>>,
+        pub source:      Option<Arc<PathBuf>>,
+    }
+
+    /// Condition that must evaluate to true in order to enable an input layer.
+    ///
+    /// ```
+    /// let condition = tek::Condition(std::sync::Arc::new(Box::new(||{true})));
+    /// ```
+    #[derive(Clone)]
+    pub struct Condition(pub Arc<Box<dyn Fn()->bool + Send + Sync>>);
+
+    impl Bind<TuiEvent, Arc<str>> {
+
+    }
+
+    /// Default is always empty map regardless if `E` and `C` implement [Default].
+    impl<E, C> Default for Bind<E, C> {
+        fn default () -> Self { Self(Default::default()) }
+    }
+
+    impl<C: Default> Default for Binding<C> {
+        fn default () -> Self {
+            Self {
+                commands:    Default::default(),
+                condition:   Default::default(),
+                description: Default::default(),
+                source:      Default::default(),
+            }
+        }
+    }
+
+    impl<E: Clone + Ord, C> Bind<E, C> {
+        /// Create a new event map
+        pub fn new () -> Self {
+            Default::default()
+        }
+        /// Add a binding to an owned event map.
+        pub fn def (mut self, event: E, binding: Binding<C>) -> Self {
+            self.add(event, binding);
+            self
+        }
+        /// Add a binding to an event map.
+        pub fn add (&mut self, event: E, binding: Binding<C>) -> &mut Self {
+            if !self.0.contains_key(&event) {
+                self.0.insert(event.clone(), Default::default());
+            }
+            self.0.get_mut(&event).unwrap().push(binding);
+            self
+        }
+        /// Return the binding(s) that correspond to an event.
+        pub fn query (&self, event: &E) -> Option<&[Binding<C>]> {
+            self.0.get(event).map(|x|x.as_slice())
+        }
+        /// Return the first binding that corresponds to an event, considering conditions.
+        pub fn dispatch (&self, event: &E) -> Option<&Binding<C>> {
+            self.query(event)
+                .map(|bb|bb.iter().filter(|b|b.condition.as_ref().map(|c|(c.0)()).unwrap_or(true)).next())
+                .flatten()
+        }
+    }
+
+    impl_debug!(Condition |self, w| { write!(w, "*") });
+}
+
+pub fn print_config (config: &Config) {
+    use ::ansi_term::Color::*;
+    println!("{:?}", config.dirs);
+    for (k, v) in config.views.read().unwrap().iter() {
+        println!("{} {} {v}", Green.paint("VIEW"), Green.bold().paint(format!("{k:<16}")));
+    }
+    for (k, v) in config.binds.read().unwrap().iter() {
+        println!("{} {}", Green.paint("BIND"), Green.bold().paint(format!("{k:<16}")));
+        for (k, v) in v.0.iter() {
+            print!("{} ", &Yellow.paint(match &k.0 {
+                Event::Key(KeyEvent { modifiers, .. }) =>
+                    format!("{:>16}", format!("{modifiers}")),
+                _ => unimplemented!()
+            }));
+            print!("{}", &Yellow.bold().paint(match &k.0 {
+                Event::Key(KeyEvent { code, .. }) =>
+                    format!("{:<10}", format!("{code}")),
+                _ => unimplemented!()
+            }));
+            for v in v.iter() {
+                print!(" => {:?}", v.commands);
+                print!(" {}", v.condition.as_ref().map(|x|format!("{x:?}")).unwrap_or_default());
+                println!(" {}", v.description.as_ref().map(|x|x.as_ref()).unwrap_or_default());
+                //println!(" {:?}", v.source);
+            }
+        }
+    }
+    config.modes.for_each(|k, v|{
+        println!();
+        for v in v.name.iter() { print!("{}", Green.bold().paint(format!("{v} "))); }
+        for v in v.info.iter() { print!("\n{}", Green.paint(format!("{v}"))); }
+        print!("\n{} {}", Blue.paint("TOOL"), Green.bold().paint(format!("{k:<16}")));
+        print!("\n{}", Blue.paint("KEYS"));
+        for v in v.keys.iter() { print!("{}", Green.paint(format!(" {v}"))); }
+        println!();
+        v.modes.for_each(|k, v|{
+            print!("{} {} {:?}", Blue.paint("MODE"), Green.bold().paint(format!("{k:<16}")), v.name);
+            print!(  " INFO={:?}", v.info);
+            print!(  " VIEW={:?}", v.view);
+            println!(" KEYS={:?}", v.keys);
+        });
+        print!("{}", Blue.paint("VIEW"));
+        for v in v.view.iter() { print!("{}", Green.paint(format!(" {v}"))); }
+        println!();
+    });
+}

src/device/dialog.rs

@@ -1,8 +1,8 @@
 use crate::{*, device::*};
 
-pub fn draw_dialog <'a, L: Language + ?Sized> (
+pub fn draw_dialog <'a> (to: &mut Tui, mut frags: std::str::Split<&str>, state: &App)
-    to: &mut Tui, mut frags: std::str::Split<&str>, state: &App, dsl: &'a L
+    -> Drawn<'a, u16>
-) -> Drawn<'a, u16> {
+{
     match frags.next() {
         Some("menu") => if let Dialog::Menu(selected, items) = &state.dialog {
             //Some(iter_south(move||items.0.iter().enumerate().map(move|(index, MenuItem(item, _))|{
@@ -28,7 +28,7 @@ pub fn draw_dialog <'a, L: Language + ?Sized> (
         } else {
             None
         }.draw(to),
-        _ => unimplemented!("App::interpret_word: {dsl:?} ({frags:?})"),
+        _ => unimplemented!("draw_dialog: ({frags:?})"),
     }
 }
 

src/tek.rs

@@ -76,13 +76,13 @@ fn run_new_plain (config: Config) -> Usually<()> {
 #[cfg(feature = "cli")] pub mod cli {
     use crate::*;
 
-    pub fn run_with_config <'a> (config: Arc<Config<'a>>) -> UsuallyRef<'a, ()> {
+    pub fn run_with_config (config: Arc<Config>) -> Usually<()> {
         Cli::parse().run(Some(config))
     }
 
     /// Command-line configuration.
     impl Cli {
-        pub fn run <'a> (&self, mut config: Option<Arc<Config<'a>>>) -> UsuallyRef<'a, ()> {
+        pub fn run (&self, mut config: Option<Arc<Config>>) -> Usually<()> {
             if config.is_none() {
                 config = Some(Config::init_new(None)?);
             }
@@ -231,308 +231,7 @@ fn run_new_plain (config: Config) -> Usually<()> {
 }
 
 pub use self::config::*;
-mod config {
+mod config;
-    use crate::*;
-    use std::path::PathBuf;
-    use notify_debouncer_full::notify::{RecursiveMode, PollWatcher, Config as NotifyConfig, Watcher};
-
-    /// Configuration: mode, view, and bind definitions.
-    ///
-    /// ```
-    /// let config = tek::Config::default();
-    /// ```
-    ///
-    /// ```
-    /// // Some dizzle.
-    /// // What indentation to use here lol?
-    /// let source = stringify!((mode :menu (name Menu)
-    ///   (info Mode selector.) (keys :axis/y :confirm)
-    ///   (view (bg (g 0) (bsp/s :ports/out
-    ///     (bsp/n :ports/in
-    ///       (bg (g 30) (bsp/s (fixed/y 7 :logo)
-    ///         (fill :dialog/menu)))))))));
-    /// // Add this definition to the config and try to load it.
-    /// // A "mode" is basically a state machine
-    /// // with associated input and output definitions.
-    /// tek::Config::default().add(&source).unwrap().get_mode(":menu").unwrap();
-    /// ```
-    #[derive(Default, Debug)]
-    pub struct Config<'a> {
-        /// XDG base directories of running user.
-        pub dirs:  BaseDirectories,
-        /// Active collection of interaction modes.
-        pub modes: Modes<'a>,
-        /// Active collection of event bindings.
-        pub binds: Binds,
-        /// Active collection of view definitions.
-        pub views: Views,
-        /// Error caught during reloading 
-        pub error: RwLock<Option<Arc<str>>>,
-        /// Timestamp
-        pub stamp: AtomicU64,
-        /// Watcher
-        pub watch: RwLock<Option<PollWatcher>>
-    }
-
-    /// Collection of custom view definitions.
-    pub type Views = Arc<RwLock<BTreeMap<Arc<str>, Arc<str>>>>;
-
-    /// Collection of UI modes.
-    ///
-    /// ```
-    /// let mut modes = tek::Modes::default();
-    /// assert_eq!(modes.len(), 0);
-    /// let _ = modes.add(&":foo", &"(mode (name Foo) (info Bar))");
-    /// assert_eq!(modes.len(), 1);
-    /// ```
-    #[derive(Default, Debug, Clone)]
-    pub struct Modes<'a>(Arc<RwLock<BTreeMap<Arc<str>, Arc<Mode<'a, Arc<str>>>>>>);
-
-    /// Group of view and keys definitions.
-    ///
-    /// ```
-    /// let mode = tek::Mode::<std::sync::Arc<str>>::default();
-    /// ```
-    #[derive(Default, Debug)]
-    pub struct Mode<'a, D: Language + Ord> {
-        pub path:  PathBuf,
-        pub name:  Vec<D>,
-        pub info:  Vec<D>,
-        pub view:  Vec<D>,
-        pub keys:  Vec<D>,
-        pub modes: Modes<'a>,
-    }
-
-    impl<'a> Config<'a> {
-        /// Default configuration directory.
-        const CONFIG_DIR: &'static str = "tek";
-        /// Default configuration subdirectory.
-        const CONFIG_SUB: &'static str = "v0";
-        /// Default configuration file name.
-        const CONFIG:     &'static str = "tek.edn";
-        /// Default configuration contents.
-        const DEFAULTS:   &'static str = include_str!("tek.edn");
-        /// Create a new app configuration from a set of XDG base directories,
-        pub fn new (dirs: Option<BaseDirectories>) -> Self {
-            Self {
-                dirs: dirs.unwrap_or_else(||{
-                    BaseDirectories::with_profile(Self::CONFIG_DIR, Self::CONFIG_SUB)
-                }),
-                stamp: quanta::Clock::new().raw().into(),
-                ..Default::default()
-            }
-        }
-        /// Create, initialize, and watch a new configuration.
-        pub fn watched <T> (callback: impl FnOnce(Arc<Self>)->T) -> UsuallyRef<'a, T> {
-            let config = Self::init_new(None)?;
-            Self::watch(config.clone(), None)?;
-            let result = callback(config);
-            Ok(result)
-        }
-        /// Create and initialize a new configuration.
-        pub fn init_new (_dirs: Option<BaseDirectories>) -> UsuallyRef<'a, Arc<Self>> {
-            let config = Arc::new(Self::new(None));
-            config.init()?;
-            Ok(config)
-        }
-        /// Watch a config's file for changes.
-        pub fn watch (config: Arc<Self>, poll: Option<Duration>) -> UsuallyRef<'a, ()> {
-            let handler = {
-                let config = config.clone();
-                move |result|match result {
-                    Ok(_events) => if let Err(e) = config.init() {
-                        *config.error.write().unwrap() = Some(format!("{e:?}").into());
-                        panic!("{e:?}");
-                    } else {
-                        //println!("config updated");
-                    },
-                    Err(errors) => {
-                        panic!("{errors:?}");
-                    }
-                }
-            };
-            let mut watcher = ::notify_debouncer_full::notify::poll::PollWatcher::new(
-                handler,
-                NotifyConfig::default()
-                    .with_poll_interval(poll.unwrap_or(Duration::from_millis(250)))
-            )?;
-            if let Some(path) = config.get_file() {
-                //println!("watching: {path:?}");
-                watcher.watch(&path, RecursiveMode::NonRecursive)?;
-                *config.watch.write().unwrap() = Some(watcher);
-                Ok(())
-            } else {
-                Err(format!("no config path").into())
-            }
-        }
-        /// Find the config file.
-        fn find_file (&self) -> Option<PathBuf> {
-            self.dirs.find_config_file(Self::CONFIG)
-        }
-        /// Place config file in default location.
-        fn place_file (&self) -> Result<PathBuf, std::io::Error> {
-            self.dirs.place_config_file(Self::CONFIG)
-        }
-        /// Get path to config file.
-        fn get_file (&self) -> Option<PathBuf> {
-            self.dirs.get_config_file(Self::CONFIG)
-        }
-        /// Write initial contents of configuration.
-        pub fn init (&self) -> UsuallyRef<'a, ()> {
-            //println!("\r\ninit {}", quanta::Clock::new().raw());
-            self.clear();
-            self.load(Self::CONFIG, Self::DEFAULTS, move|cfgs, dsl|{
-                cfgs.add(&dsl)?;
-                Ok(())
-            })
-        }
-        /// Write initial contents of a configuration file.
-        pub fn load <F: FnMut(&Self, &str)->UsuallyRef<'a, ()>> (
-            &self, path: &str, defaults: &str, mut each: F
-        ) -> UsuallyRef<'a, ()> {
-            self.stamp.store(quanta::Clock::new().raw(), Relaxed);
-            if self.find_file().is_none() {
-                //println!("Creating {path:?}");
-                std::fs::write(self.place_file()?, defaults)?;
-            }
-            Ok(if let Some(path) = self.find_file() {
-                //println!("Loading {path:?}");
-                let src = std::fs::read_to_string(&path)?;
-                src.as_str().each(move|item|each(self, item))?;
-            } else {
-                return Err(format!("{path}: not found").into())
-            })
-        }
-        /// Add statements to configuration from [Dsl] source.
-        pub fn add (&'a self, dsl: impl Language) -> UsuallyRef<'a, &Self> {
-            dsl.each(|item|self.add_one(item))?;
-            Ok(self)
-        }
-        /// Make this configuration empty.
-        fn clear (&self) {
-            *self.modes.0.write().unwrap() = Default::default();
-            *self.views.write().unwrap() = Default::default();
-            *self.binds.write().unwrap() = Default::default();
-        }
-        /// Add one entry to the configuration.
-        fn add_one (&'a self, item: &'a (impl Language + ?Sized)) -> UsuallyRef<'a, ()> {
-            item.expr()?
-                .map(|expr|{
-                    let head = expr.head()?;
-                    let tail = expr.tail()?;
-                    let name = tail.head()?;
-                    let body = tail.tail()?;
-                    match head {
-                        Some("mode") if let Some(name) = name => self.modes.add(name, body)?,
-                        Some("keys") if let Some(name) = name => load_bind(&self.binds, name, body)?,
-                        Some("view") if let Some(name) = name => load_view(&self.views, name, body)?,
-                        _ => return Ok::<Option<()>, Box<dyn Error>>(None)
-                    }
-                    Ok(Some(()))
-                })
-                .transpose()?
-                .flatten()
-                .ok_or_else(||format!("Config::load: expected view/keys/mode expr, got: {item:?}").into())
-        }
-        /// Get a mode by name.
-        pub fn get_mode (&'a self, mode: impl AsRef<str>) -> Option<Arc<Mode<'a, Arc<str>>>> {
-            self.modes.get(mode)
-        }
-        /// Print the configuration.
-        pub fn print (&self) {
-            print_config(self)
-        }
-    }
-
-    impl<'a> Modes<'a> {
-        /// Register a mode.
-        pub fn add (
-            &self, name: &'a (impl AsRef<str> + ?Sized), body: impl Language
-        )
-            -> UsuallyRef<'a, ()>
-        {
-            let mut mode = Mode::default();
-            body.each(|item|mode.add(item))?;
-            self.0.write().unwrap().insert(name.as_ref().into(), Arc::new(mode));
-            Ok(())
-        }
-        /// Get a mode by name.
-        pub fn get (&self, name: impl AsRef<str>) -> Option<Arc<Mode<'a, Arc<str>>>> {
-            self.0.read().unwrap().get(name.as_ref()).cloned()
-        }
-        /// Run something for each mode.
-        pub fn for_each <T> (&self, mut ator: impl FnMut(&str, &Mode<Arc<str>>)->T) {
-            for (k, v) in self.0.read().unwrap().iter() {
-                let _ = ator(k.as_ref(), v.as_ref());
-            }
-        }
-        /// Count modes.
-        pub fn len (&self) -> usize {
-            self.0.read().unwrap().len()
-        }
-    }
-
-    impl<'a> Mode<'a, Arc<str>> {
-        /// Add a definition to the mode.
-        ///
-        /// Supported definitions:
-        ///
-        ///   - (name ...) -> name
-        ///   - (info ...) -> description
-        ///   - (keys ...) -> key bindings
-        ///   - (mode ...) -> submode
-        ///   - ...        -> view
-        ///
-        /// ```
-        /// let mut mode: tek::Mode<std::sync::Arc<str>> = Default::default();
-        /// mode.add("(name hello)").unwrap();
-        /// ```
-        pub fn add (&mut self, dsl: &'a (impl Language + ?Sized)) -> UsuallyRef<'a, ()> {
-            Ok(if let Ok(Some(expr)) = dsl.expr() && let Ok(Some(head)) = expr.head() {
-                //println!("Mode::add: {head} {:?}", expr.tail());
-                let tail = expr.tail()?.map(|x|x.trim()).unwrap_or("");
-                match head {
-                    "name" => self.add_name(tail)?,
-                    "info" => self.add_info(tail)?,
-                    "keys" => self.add_keys(tail)?,
-                    "mode" => self.add_mode(tail)?,
-                    _      => self.add_view(tail)?,
-                };
-            } else if let Ok(Some(word)) = dsl.word() {
-                self.add_view(word)?;
-            } else {
-                return Err(format!("Mode::add: unexpected: {dsl:?}").into());
-            })
-        }
-        /// Add a name to the mode.
-        fn add_name (&mut self, dsl: &'a (impl Language + ?Sized)) -> PerhapsRef<'a, ()> {
-            Ok(dsl.text()?.map(|text|self.name.push(text.into())))
-        }
-        /// Add a description to the mode.
-        fn add_info (&mut self, dsl: &'a (impl Language + ?Sized)) -> PerhapsRef<'a, ()> {
-            Ok(dsl.text()?.map(|text|self.info.push(text.into())))
-        }
-        /// Add a view definition to the mode.
-        fn add_view (&mut self, dsl: &'a (impl Language + ?Sized)) -> PerhapsRef<'a, ()> {
-            Ok(dsl.text()?.map(|text|self.view.push(text.into())))
-        }
-        /// Add a keyboard input bindin to the mode.
-        fn add_keys (&mut self, dsl: &'a (impl Language + ?Sized)) -> PerhapsRef<'a, ()> {
-            Ok(Some(dsl.src()?.each(|expr|{
-                self.keys.push(expr.trim().into());
-                Ok::<(), Box<dyn Error>>(())
-            })?))
-        }
-        /// Add a submode to the mode.
-        fn add_mode (&mut self, dsl: &'a (impl Language + ?Sized + 'a)) -> PerhapsRef<'a, ()> {
-            Ok(Some(if let Some(id) = dsl.head()? {
-                self.modes.add(id, &dsl.tail())?;
-            } else {
-                return Err(format!("Mode::add: self: incomplete: {dsl:?}").into());
-            }))
-        }
-    }
-}
 
 pub use self::app::*;
 mod app {
@@ -606,7 +305,7 @@ mod app {
         /// Performance counter
         pub perf:    PerfModel,
         /// Available view modes and input bindings
-        pub config:  Arc<Config<'static>>,
+        pub config:  Arc<Config>,
         /// Currently selected mode
         pub mode:    Option<Arc<str>>,
         /// Undo history
@@ -632,7 +331,10 @@ mod app {
         /// let tek = tek::App::new(None, proj, conf, "hello");
         /// ```
         pub fn new (
-            exit: Option<Exit>, project: Arrangement, config: Arc<Config>, mode: impl AsRef<str>
+            exit: Option<Exit>,
+            project: Arrangement,
+            config: Arc<Config>,
+            mode: impl AsRef<str>
         ) -> Self {
             App {
                 exit:   exit.unwrap_or_default(),
@@ -790,47 +492,6 @@ pub use self::bind::*;
 mod bind {
     use crate::*;
 
-    /// Collection of input bindings.
-    pub type Binds = Arc<RwLock<BTreeMap<Arc<str>, Bind<TuiEvent, Arc<str>>>>>;
-
-    /// An map of input events (e.g. [TuiEvent]) to [Binding]s.
-    ///
-    /// ```
-    /// let lang = "(@x (nop)) (@y (nop) (nop))";
-    /// let bind = tek::Bind::<tek::tengri::TuiEvent, std::sync::Arc<str>>::load(&lang).unwrap();
-    /// assert_eq!(bind.query(&'x'.into()).map(|x|x.len()), Some(1));
-    /// //assert_eq!(bind.query(&'y'.into()).map(|x|x.len()), Some(2));
-    /// ```
-    #[derive(Debug)]
-    pub struct Bind<E, C>(
-        /// Map of each event (e.g. key combination) to
-        /// all command expressions bound to it by
-        /// all loaded input layers.
-        pub BTreeMap<E, Vec<Binding<C>>>
-    );
-
-    /// A sequence of zero or more commands (e.g. [AppCommand]),
-    /// optionally filtered by [Condition] to form layers.
-    ///
-    /// ```
-    /// //FIXME: Why does it overflow?
-    /// //let binding: Binding<()> = tek::Binding { ..Default::default() };
-    /// ```
-    #[derive(Debug, Clone)] pub struct Binding<C> {
-        pub commands:    Arc<[C]>,
-        pub condition:   Option<Condition>,
-        pub description: Option<Arc<str>>,
-        pub source:      Option<Arc<PathBuf>>,
-    }
-
-    /// Condition that must evaluate to true in order to enable an input layer.
-    ///
-    /// ```
-    /// let condition = tek::Condition(std::sync::Arc::new(Box::new(||{true})));
-    /// ```
-    #[derive(Clone)]
-    pub struct Condition(pub Arc<Box<dyn Fn()->bool + Send + Sync>>);
-
     tui_keys!(self: App, input {
         let name = self.mode.as_ref();
         let mode = name.and_then(|m|self.config.get_mode(m)).as_ref().map(Arc::clone);
@@ -983,89 +644,6 @@ mod bind {
         }
     }
 
-    pub(crate) fn load_bind <'a> (
-        binds: &Binds, name: impl AsRef<str>, body: impl Language
-    ) -> Usually<()> {
-        binds.write().unwrap().insert(name.as_ref().into(), Bind::load(&body)?);
-        Ok(())
-    }
-
-    impl Bind<TuiEvent, Arc<str>> {
-        pub fn load <'a> (lang: &impl Language) -> Usually<Self> {
-            let mut map = Self::new();
-            lang.each(|item|if item.expr().head() == Ok(Some("see")) {
-                // TODO
-                Ok(())
-            } else if let Ok(Some(_word)) = item.expr().head().word() {
-                if let Some(event) = TuiKey::from_dsl(item.expr()?.head()?)?.to_crossterm() {
-                    map.add(TuiEvent(event), Binding {
-                        commands:    [item.expr()?.tail()?.unwrap_or_default().into()].into(),
-                        condition:   None,
-                        description: None,
-                        source:      None
-                    });
-                    Ok(())
-                } else if Some(":char") == item.expr()?.head()? {
-                    // TODO
-                    return Ok(())
-                } else {
-                    return Err(format!("Config::load_bind: invalid key: {:?}", item.expr()?.head()?).into())
-                }
-            } else {
-                return Err(format!("Config::load_bind: unexpected: {item:?}").into())
-            })?;
-            Ok(map)
-        }
-    }
-
-    /// Default is always empty map regardless if `E` and `C` implement [Default].
-    impl<E, C> Default for Bind<E, C> {
-        fn default () -> Self { Self(Default::default()) }
-    }
-
-    impl<C: Default> Default for Binding<C> {
-        fn default () -> Self {
-            Self {
-                commands:    Default::default(),
-                condition:   Default::default(),
-                description: Default::default(),
-                source:      Default::default(),
-            }
-        }
-    }
-
-    impl<E: Clone + Ord, C> Bind<E, C> {
-        /// Create a new event map
-        pub fn new () -> Self {
-            Default::default()
-        }
-        /// Add a binding to an owned event map.
-        pub fn def (mut self, event: E, binding: Binding<C>) -> Self {
-            self.add(event, binding);
-            self
-        }
-        /// Add a binding to an event map.
-        pub fn add (&mut self, event: E, binding: Binding<C>) -> &mut Self {
-            if !self.0.contains_key(&event) {
-                self.0.insert(event.clone(), Default::default());
-            }
-            self.0.get_mut(&event).unwrap().push(binding);
-            self
-        }
-        /// Return the binding(s) that correspond to an event.
-        pub fn query (&self, event: &E) -> Option<&[Binding<C>]> {
-            self.0.get(event).map(|x|x.as_slice())
-        }
-        /// Return the first binding that corresponds to an event, considering conditions.
-        pub fn dispatch (&self, event: &E) -> Option<&Binding<C>> {
-            self.query(event)
-                .map(|bb|bb.iter().filter(|b|b.condition.as_ref().map(|c|(c.0)()).unwrap_or(true)).next())
-                .flatten()
-        }
-    }
-
-    impl_debug!(Condition |self, w| { write!(w, "*") });
-
     /// A control axis.
     ///
     /// ```
@@ -1309,17 +887,6 @@ pub use self::draw::*;
 mod draw {
     use crate::*;
 
-    /// Load custom view definition.
-    pub(crate) fn load_view <'a> (
-        views: &Views, name: impl AsRef<str>, body: impl Language,
-    ) -> UsuallyRef<'a, ()> {
-        views.write().unwrap().insert(
-            name.as_ref().into(),
-            body.src()?.unwrap_or_default().into()
-        );
-        Ok(())
-    }
-
     /// The [Draw] implementation for [App] handles the loaded view,
     /// which is defined in terms of [dizzle] DSL.
     ///
@@ -1350,15 +917,22 @@ mod draw {
             if let Some(mode) = self.mode.as_ref().and_then(|m|self.config.get_mode(m)) {
                 let mut error = false;
                 for (index, dsl) in mode.view.iter().enumerate() {
-                    if let Err(e) = self.draw_mode(to, dsl) {
+                    match self.draw_mode(to, dsl) {
-                        let src = &dsl.src().unwrap_or(Some("<source error>")).unwrap_or("<no source>");
+                        Ok(None) => {},
-                        let message = format!(
+                        Ok(Some(XYWH(.., w, h))) => {
-                            "Mode:  {:?}\n\nLayer: #{index}\n\nError: {e}\n\nSource:\n{src}",
+                            self.size.0.store(w as usize, Relaxed);
-                            &mode.name
+                            self.size.1.store(h as usize, Relaxed);
-                        );
+                        },
-                        *self.error.write().unwrap() = Some(message.into());
+                        Err(e) => {
-                        error = true;
+                            let src = &dsl.src().unwrap_or(Some("<source error>")).unwrap_or("<no source>");
-                        break;
+                            let message = format!(
+                                "Mode:  {:?}\n\nLayer: #{index}\n\nError: {e}\n\nSource:\n{src}",
+                                &mode.name
+                            );
+                            *self.error.write().unwrap() = Some(message.into());
+                            error = true;
+                            break;
+                        }
                     }
                 }
                 if !error {
@@ -1368,15 +942,8 @@ mod draw {
             Ok(())
         }
 
-        fn draw_mode <'a> (&'a self, to: &mut Tui, dsl: &'a impl Language) -> UsuallyRef<'a, ()> {
+        fn draw_mode <'a, L: Language + 'a> (&'a self, to: &mut Tui, dsl: L) -> Drawn<'a, u16> {
-            Ok(match self.interpret(to, dsl) {
+            self.interpret(to, dsl)
-                Err(e) => return Err(e),
-                Ok(None) => {},
-                Ok(Some(XYWH(.., w, h))) => {
-                    self.size.0.store(w as usize, Relaxed);
-                    self.size.1.store(h as usize, Relaxed);
-                },
-            })
         }
 
         fn draw_debug (&self, to: &mut Tui) -> Drawn<u16> {
@@ -1388,64 +955,60 @@ mod draw {
     }
 
     impl<'a> Interpret<'a, Tui, Option<XYWH<u16>>> for App {
-
+        fn interpret <L: Language + 'a> (&'a self, to: &mut Tui, dsl: L) -> Drawn<'a, u16> {
-        fn interpret_expr <L: Language + ?Sized> (&'a self, to: &mut Tui, src: &'a L) -> Drawn<u16> {
+            if let Some(expr) = dsl.expr()? {
-            if let Some(src) = src.src()? {
+                interpret_keyword!(self, to, expr, [
-                interpret_keyword!(self, to, src, [
                     kw_when, kw_either, kw_split, kw_align, kw_exact, kw_min, kw_max, kw_push, kw_full,
                     kw_tui_text, kw_tui_fg, kw_tui_bg
                 ]);
-                Err(format!("interpret_expr: unexpected: {src:?}").into())
+                Err(format!("interpret_expr: unexpected: {expr:?}").into())
+            } else if let Some(word) = dsl.word()? {
+                let mut frags = word.src()?.unwrap().split("/");
+                match frags.next() {
+                    //Some(":logo")         => view_logo().draw(to),
+                    Some(":meters")    => match frags.next() {
+                        Some("input")  => bg(Rgb(30, 30, 30), "Input Meters".align_s().full_h()).draw(to),
+                        Some("output") => bg(Rgb(30, 30, 30), "Output Meters".align_s().full_h()).draw(to),
+                        _ => panic!()
+                    },
+                    Some(":tracks")     => match frags.next() {
+                        None            => "TODO tracks".draw(to),
+                        Some("names")   => self.project.view_track_names(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), full_w(align_w("Track Names")))),
+                        Some("inputs")  => self.project.view_track_inputs(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), "Track Inputs".align_w().full_w()).draw(to),
+                        Some("devices") => self.project.view_track_devices(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), "Track Devices".align_w().full_w()).draw(to),
+                        Some("outputs") => self.project.view_track_outputs(self.color.clone(), 0).draw(to),
+                        _ => panic!()
+                    },
+                    Some(":scenes")     => match frags.next() {
+                        None            => self.view_scenes_clips().draw(to),
+                        Some("names")   => self.view_scenes_names().draw(to),
+                        _ => panic!()
+                    },
+                    Some(":dialog")       => draw_dialog(to, frags, self),
+                    Some(":templates")    => view_templates(frags, self).draw(to),
+                    Some(":sessions")     => view_sessions().draw(to),
+                    Some(":browse/title") => view_browse_title(self).draw(to),
+                    Some(":device")       => view_device(self).draw(to),
+                    Some(":status")       => "TODO: Status Bar".draw(to),
+                    Some(":editor")       => "TODO Editor".draw(to),
+                    Some(":transport")    => view_transport(true, "", "", "").draw(to),
+                    Some(":debug")        => format!("[{:?}]", to.area()).exact_h(1).draw(to),
+                    Some(_) => {
+                        let views = self.config.views.read().unwrap();
+                        if let Some(lang) = views.get(word.src()?.unwrap()) {
+                            let lang = lang.clone();
+                            std::mem::drop(views);
+                            self.draw_mode(to, lang)
+                        } else {
+                            fg(Color::Rgb(128, 32, 32), format!("undefined: {word:?}")).draw(to)
+                        }
+                    },
+                    _ => unreachable!()
+                }
             } else {
-                Err(format!("interpret_expr: no keyword: {src:?}").into())
+                Err(format!("not word/expr:\n{dsl:?}").into())
             }
         }
-
-        fn interpret_word <L: Language + ?Sized> (&'a self, to: &mut Tui, lang: &'a L) -> Drawn<u16> {
-            let mut frags = lang.src()?.unwrap().split("/");
-            match frags.next() {
-                //Some(":logo")         => view_logo().draw(to),
-                Some(":meters")    => match frags.next() {
-                    Some("input")  => bg(Rgb(30, 30, 30), "Input Meters".align_s().full_h()).draw(to),
-                    Some("output") => bg(Rgb(30, 30, 30), "Output Meters".align_s().full_h()).draw(to),
-                    _ => panic!()
-                },
-                Some(":tracks")     => match frags.next() {
-                    None            => "TODO tracks".draw(to),
-                    Some("names")   => self.project.view_track_names(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), full_w(align_w("Track Names")))),
-                    Some("inputs")  => self.project.view_track_inputs(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), "Track Inputs".align_w().full_w()).draw(to),
-                    Some("devices") => self.project.view_track_devices(self.color.clone()).draw(to),//bg(Rgb(40, 40, 40), "Track Devices".align_w().full_w()).draw(to),
-                    Some("outputs") => self.project.view_track_outputs(self.color.clone(), 0).draw(to),
-                    _ => panic!()
-                },
-                Some(":scenes")     => match frags.next() {
-                    None            => self.view_scenes_clips().draw(to),
-                    Some("names")   => self.view_scenes_names().draw(to),
-                    _ => panic!()
-                },
-                Some(":dialog")       => draw_dialog(to, frags, self, lang),
-                Some(":templates")    => view_templates(frags, self).draw(to),
-                Some(":sessions")     => view_sessions().draw(to),
-                Some(":browse/title") => view_browse_title(self).draw(to),
-                Some(":device")       => view_device(self).draw(to),
-                Some(":status")       => "TODO: Status Bar".draw(to),
-                Some(":editor")       => "TODO Editor".draw(to),
-                Some(":transport")    => view_transport(true, "", "", "").draw(to),
-                Some(":debug")        => format!("[{:?}]", to.area()).exact_h(1).draw(to),
-                Some(_) => {
-                    let views = self.config.views.read().unwrap();
-                    if let Some(lang) = views.get(lang.src()?.unwrap()) {
-                        let lang = lang.clone();
-                        std::mem::drop(views);
-                        self.interpret(to, &lang)
-                    } else {
-                        fg(Color::Rgb(128, 32, 32), format!("undefined: {lang:?}")).draw(to)
-                    }
-                },
-                _ => unreachable!()
-            }
-        }
-
     }
 
     impl_has!(Sizer: |self: App|self.size);
@@ -1458,11 +1021,13 @@ mod draw {
         fn width_dec (&mut self);
     }
 
-    pub fn view_templates <'a> (_frags: std::str::Split<&str>, state: &App) -> impl Draw<'a, Tui> {
+    pub fn view_templates <'a> (_frags: std::str::Split<&str>, state: &'a App)
+        -> impl Draw<'a, Tui> + use<'a>
+    {
         let height = (state.config.modes.len() * 2) as u16;
         draw(move |to: &mut Tui|{
             let mut index = 0;
-            state.config.modes.for_each(|id, profile| {
+            state.config.modes.for_each(&mut |id: &str, profile: &Mode| {
                 let b          = if index == 0 { Rgb(70,70,70) } else { Rgb(50,50,50) };
                 let name       = profile.name.get(0).map(|x|x.as_ref()).unwrap_or("<no name>");
                 let info       = profile.info.get(0).map(|x|x.as_ref()).unwrap_or("<no info>");
@@ -1597,53 +1162,6 @@ mod draw {
 
 }
 
-pub fn print_config (config: &Config) {
-    use ::ansi_term::Color::*;
-    println!("{:?}", config.dirs);
-    for (k, v) in config.views.read().unwrap().iter() {
-        println!("{} {} {v}", Green.paint("VIEW"), Green.bold().paint(format!("{k:<16}")));
-    }
-    for (k, v) in config.binds.read().unwrap().iter() {
-        println!("{} {}", Green.paint("BIND"), Green.bold().paint(format!("{k:<16}")));
-        for (k, v) in v.0.iter() {
-            print!("{} ", &Yellow.paint(match &k.0 {
-                Event::Key(KeyEvent { modifiers, .. }) =>
-                    format!("{:>16}", format!("{modifiers}")),
-                _ => unimplemented!()
-            }));
-            print!("{}", &Yellow.bold().paint(match &k.0 {
-                Event::Key(KeyEvent { code, .. }) =>
-                    format!("{:<10}", format!("{code}")),
-                _ => unimplemented!()
-            }));
-            for v in v.iter() {
-                print!(" => {:?}", v.commands);
-                print!(" {}", v.condition.as_ref().map(|x|format!("{x:?}")).unwrap_or_default());
-                println!(" {}", v.description.as_ref().map(|x|x.as_ref()).unwrap_or_default());
-                //println!(" {:?}", v.source);
-            }
-        }
-    }
-    config.modes.for_each(|k, v|{
-        println!();
-        for v in v.name.iter() { print!("{}", Green.bold().paint(format!("{v} "))); }
-        for v in v.info.iter() { print!("\n{}", Green.paint(format!("{v}"))); }
-        print!("\n{} {}", Blue.paint("TOOL"), Green.bold().paint(format!("{k:<16}")));
-        print!("\n{}", Blue.paint("KEYS"));
-        for v in v.keys.iter() { print!("{}", Green.paint(format!(" {v}"))); }
-        println!();
-        v.modes.for_each(|k, v|{
-            print!("{} {} {:?}", Blue.paint("MODE"), Green.bold().paint(format!("{k:<16}")), v.name);
-            print!(  " INFO={:?}", v.info);
-            print!(  " VIEW={:?}", v.view);
-            println!(" KEYS={:?}", v.keys);
-        });
-        print!("{}", Blue.paint("VIEW"));
-        for v in v.view.iter() { print!("{}", Green.paint(format!(" {v}"))); }
-        println!();
-    });
-}
-
 pub fn print_status (project: &Arrangement) {
     println!("Name:        {:?}",   &project.name);
     println!("JACK:        {:?}",   &project.jack);