style: reformat imports (ratatui#219)

Order imports by std, external, crate and group them by crate

examples/barchart.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -10,11 +16,6 @@ use ratatui::{
     widgets::{BarChart, Block, Borders},
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 struct App<'a> {
     data: Vec<(&'a str, u64)>,

examples/block.rs

@@ -1,3 +1,5 @@
+use std::{error::Error, io};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -11,7 +13,6 @@ use ratatui::{
     widgets::{block::title::Title, Block, BorderType, Borders, Padding, Paragraph},
     Frame, Terminal,
 };
-use std::{error::Error, io};
 
 fn main() -> Result<(), Box<dyn Error>> {
     // setup terminal

examples/calendar.rs

@@ -5,18 +5,15 @@ use crossterm::{
     execute,
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
-
 use ratatui::{
     backend::{Backend, CrosstermBackend},
     layout::{Constraint, Direction, Layout, Rect},
     style::{Color, Modifier, Style},
+    widgets::calendar::{CalendarEventStore, DateStyler, Monthly},
     Frame, Terminal,
 };
-
 use time::{Date, Month, OffsetDateTime};
 
-use ratatui::widgets::calendar::{CalendarEventStore, DateStyler, Monthly};
-
 fn main() -> Result<(), Box<dyn Error>> {
     enable_raw_mode()?;
     let mut stdout = io::stdout();

examples/canvas.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -15,11 +21,6 @@ use ratatui::{
     },
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 struct App {
     x: f64,

examples/chart.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -12,11 +18,6 @@ use ratatui::{
     widgets::{Axis, Block, Borders, Chart, Dataset, GraphType},
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 const DATA: [(f64, f64); 5] = [(0.0, 0.0), (1.0, 1.0), (2.0, 2.0), (3.0, 3.0), (4.0, 4.0)];
 const DATA2: [(f64, f64); 7] = [

examples/custom_widget.rs

@@ -1,3 +1,5 @@
+use std::{error::Error, io};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -11,7 +13,6 @@ use ratatui::{
     widgets::Widget,
     Frame, Terminal,
 };
-use std::{error::Error, io};
 
 #[derive(Default)]
 struct Label<'a> {

examples/demo/crossterm.rs

@@ -1,4 +1,9 @@
-use crate::{app::App, ui};
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
     execute,
@@ -8,11 +13,8 @@ use ratatui::{
     backend::{Backend, CrosstermBackend},
     Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
+
+use crate::{app::App, ui};
 
 pub fn run(tick_rate: Duration, enhanced_graphics: bool) -> Result<(), Box<dyn Error>> {
     // setup terminal

examples/demo/main.rs

@@ -8,16 +8,17 @@ mod termwiz;
 
 mod ui;
 
+use std::{error::Error, time::Duration};
+
+use argh::FromArgs;
+
 #[cfg(feature = "crossterm")]
 use crate::crossterm::run;
 #[cfg(feature = "termion")]
 use crate::termion::run;
 #[cfg(feature = "termwiz")]
 use crate::termwiz::run;
 
-use argh::FromArgs;
-use std::{error::Error, time::Duration};
-
 /// Demo
 #[derive(Debug, FromArgs)]
 struct Cli {

examples/demo/termion.rs

@@ -1,16 +1,18 @@
-use crate::{app::App, ui};
+use std::{error::Error, io, sync::mpsc, thread, time::Duration};
+
 use ratatui::{
     backend::{Backend, TermionBackend},
     Terminal,
 };
-use std::{error::Error, io, sync::mpsc, thread, time::Duration};
 use termion::{
     event::Key,
     input::{MouseTerminal, TermRead},
     raw::IntoRawMode,
     screen::IntoAlternateScreen,
 };
 
+use crate::{app::App, ui};
+
 pub fn run(tick_rate: Duration, enhanced_graphics: bool) -> Result<(), Box<dyn Error>> {
     // setup terminal
     let stdout = io::stdout()

examples/demo/termwiz.rs

@@ -1,9 +1,10 @@
-use ratatui::{backend::TermwizBackend, Terminal};
 use std::{
     error::Error,
     io,
     time::{Duration, Instant},
 };
+
+use ratatui::{backend::TermwizBackend, Terminal};
 use termwiz::{input::*, terminal::Terminal as TermwizTerminal};
 
 use crate::{app::App, ui};

examples/demo/ui.rs

@@ -1,18 +1,19 @@
-use crate::app::App;
 use ratatui::{
     backend::Backend,
     layout::{Constraint, Direction, Layout, Rect},
     style::{Color, Modifier, Style},
     symbols,
     text::{Line, Span},
-    widgets::canvas::{Canvas, Circle, Line as CanvasLine, Map, MapResolution, Rectangle},
     widgets::{
+        canvas::{Canvas, Circle, Line as CanvasLine, Map, MapResolution, Rectangle},
         Axis, BarChart, Block, Borders, Cell, Chart, Dataset, Gauge, LineGauge, List, ListItem,
         Paragraph, Row, Sparkline, Table, Tabs, Wrap,
     },
     Frame,
 };
 
+use crate::app::App;
+
 pub fn draw<B: Backend>(f: &mut Frame<B>, app: &mut App) {
     let chunks = Layout::default()
         .constraints([Constraint::Length(3), Constraint::Min(0)].as_ref())

examples/gauge.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -11,11 +17,6 @@ use ratatui::{
     widgets::{Block, Borders, Gauge},
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 struct App {
     progress1: u16,

examples/hello_world.rs

@@ -1,14 +1,15 @@
+use std::{
+    io::{self, Stdout},
+    time::Duration,
+};
+
 use anyhow::{Context, Result};
 use crossterm::{
     event::{self, Event, KeyCode},
     execute,
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 use ratatui::{backend::CrosstermBackend, widgets::Paragraph, Terminal};
-use std::{
-    io::{self, Stdout},
-    time::Duration,
-};
 
 /// This is a bare minimum example. There are many approaches to running an application loop, so
 /// this is not meant to be prescriptive. It is only meant to demonstrate the basic setup and

examples/inline.rs

@@ -1,3 +1,12 @@
+use std::{
+    collections::{BTreeMap, VecDeque},
+    error::Error,
+    io,
+    sync::mpsc,
+    thread,
+    time::{Duration, Instant},
+};
+
 use rand::distributions::{Distribution, Uniform};
 use ratatui::{
     backend::{Backend, CrosstermBackend},
@@ -8,14 +17,6 @@ use ratatui::{
     widgets::{block::title::Title, Block, Gauge, LineGauge, List, ListItem, Paragraph, Widget},
     Frame, Terminal, TerminalOptions, Viewport,
 };
-use std::{
-    collections::{BTreeMap, VecDeque},
-    error::Error,
-    io,
-    sync::mpsc,
-    thread,
-    time::{Duration, Instant},
-};
 
 const NUM_DOWNLOADS: usize = 10;
 

examples/layout.rs

@@ -1,3 +1,5 @@
+use std::{error::Error, io};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -9,7 +11,6 @@ use ratatui::{
     widgets::{Block, Borders},
     Frame, Terminal,
 };
-use std::{error::Error, io};
 
 fn main() -> Result<(), Box<dyn Error>> {
     // setup terminal

examples/list.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
     execute,
@@ -11,11 +17,6 @@ use ratatui::{
     widgets::{Block, Borders, List, ListItem, ListState},
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 struct StatefulList<T> {
     state: ListState,

examples/panic.rs

@@ -17,18 +17,19 @@
 #![deny(clippy::all)]
 #![warn(clippy::pedantic, clippy::nursery)]
 
-use std::error::Error;
-use std::io;
-
-use crossterm::event::{self, Event, KeyCode};
-use crossterm::terminal::{disable_raw_mode, enable_raw_mode};
-use crossterm::terminal::{EnterAlternateScreen, LeaveAlternateScreen};
-
-use ratatui::backend::{Backend, CrosstermBackend};
-use ratatui::layout::Alignment;
-use ratatui::text::Line;
-use ratatui::widgets::{Block, Borders, Paragraph};
-use ratatui::{Frame, Terminal};
+use std::{error::Error, io};
+
+use crossterm::{
+    event::{self, Event, KeyCode},
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
+use ratatui::{
+    backend::{Backend, CrosstermBackend},
+    layout::Alignment,
+    text::Line,
+    widgets::{Block, Borders, Paragraph},
+    Frame, Terminal,
+};
 
 type Result<T> = std::result::Result<T, Box<dyn Error>>;
 

examples/paragraph.rs

@@ -1,3 +1,9 @@
+use std::{
+    error::Error,
+    io,
+    time::{Duration, Instant},
+};
+
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
@@ -11,11 +17,6 @@ use ratatui::{
     widgets::{Block, Borders, Paragraph, Wrap},
     Frame, Terminal,
 };
-use std::{
-    error::Error,
-    io,
-    time::{Duration, Instant},
-};
 
 struct App {
     scroll: u16,

examples/popup.rs

@@ -1,3 +1,10 @@
+use std::{error::Error, io};
+
+use crossterm::{
+    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
+    execute,
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
 use ratatui::{
     backend::{Backend, CrosstermBackend},
     layout::{Alignment, Constraint, Direction, Layout, Rect},
@@ -6,13 +13,6 @@ use ratatui::{
     widgets::{Block, Borders, Clear, Paragraph, Wrap},
     Frame, Terminal,
 };
-use std::{error::Error, io};
-
-use crossterm::{
-    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
-    execute,
-    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
-};
 
 struct App {
     show_popup: bool,