mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-12-04 10:35:06 +02:00
Final touches :D
This commit is contained in:
mo8it
parent
5f4875e2ba
commit
64772544fa
@ -271,6 +271,7 @@ impl AppState {
|
||||
Ok(exercise.path)
|
||||
}
|
||||
|
||||
// Reset the exercise by index and return its name.
|
||||
pub fn reset_exercise_by_ind(&mut self, exercise_ind: usize) -> Result<&'static str> {
|
||||
if exercise_ind >= self.exercises.len() {
|
||||
bail!(BAD_INDEX_ERR);
|
||||
@ -280,7 +281,7 @@ impl AppState {
|
||||
let exercise = &self.exercises[exercise_ind];
|
||||
self.reset(exercise_ind, exercise.path)?;
|
||||
|
||||
Ok(exercise.path)
|
||||
Ok(exercise.name)
|
||||
}
|
||||
|
||||
// Return the index of the next pending exercise or `None` if all exercises are done.
|
||||
|
||||
@ -12,7 +12,8 @@ use std::{
|
||||
|
||||
use crate::{app_state::AppState, exercise::Exercise, term::progress_bar, MAX_EXERCISE_NAME_LEN};
|
||||
|
||||
// +1 for padding.
|
||||
const MAX_SCROLL_PADDING: usize = 8;
|
||||
// +1 for column padding.
|
||||
const SPACE: &[u8] = &[b' '; MAX_EXERCISE_NAME_LEN + 1];
|
||||
|
||||
fn next_ln(stdout: &mut StdoutLock) -> io::Result<()> {
|
||||
@ -44,8 +45,9 @@ pub struct ListState<'a> {
|
||||
name_col_width: usize,
|
||||
filter: Filter,
|
||||
n_rows_with_filter: usize,
|
||||
/// Selected row out of the displayed ones.
|
||||
/// Selected row out of the filtered ones.
|
||||
selected_row: Option<usize>,
|
||||
row_offset: usize,
|
||||
term_width: u16,
|
||||
term_height: u16,
|
||||
separator_line: Vec<u8>,
|
||||
@ -53,7 +55,6 @@ pub struct ListState<'a> {
|
||||
show_footer: bool,
|
||||
max_n_rows_to_display: usize,
|
||||
scroll_padding: usize,
|
||||
row_offset: usize,
|
||||
}
|
||||
|
||||
impl<'a> ListState<'a> {
|
||||
@ -70,7 +71,7 @@ impl<'a> ListState<'a> {
|
||||
|
||||
let filter = Filter::None;
|
||||
let n_rows_with_filter = app_state.exercises().len();
|
||||
let selected = Some(app_state.current_exercise_ind());
|
||||
let selected = app_state.current_exercise_ind();
|
||||
|
||||
let mut slf = Self {
|
||||
message: String::with_capacity(128),
|
||||
@ -78,7 +79,8 @@ impl<'a> ListState<'a> {
|
||||
name_col_width,
|
||||
filter,
|
||||
n_rows_with_filter,
|
||||
selected_row: selected,
|
||||
selected_row: Some(selected),
|
||||
row_offset: selected.saturating_sub(MAX_SCROLL_PADDING),
|
||||
// Set by `set_term_size`
|
||||
term_width: 0,
|
||||
term_height: 0,
|
||||
@ -87,8 +89,6 @@ impl<'a> ListState<'a> {
|
||||
show_footer: true,
|
||||
max_n_rows_to_display: 0,
|
||||
scroll_padding: 0,
|
||||
// Updated by `draw`
|
||||
row_offset: 0,
|
||||
};
|
||||
|
||||
let (width, height) = terminal::size()?;
|
||||
@ -98,19 +98,6 @@ impl<'a> ListState<'a> {
|
||||
Ok(slf)
|
||||
}
|
||||
|
||||
pub fn set_term_size(&mut self, width: u16, height: u16) {
|
||||
self.term_width = width;
|
||||
self.term_height = height;
|
||||
|
||||
self.separator_line = "─".as_bytes().repeat(width as usize);
|
||||
|
||||
self.narrow_term = width < 95 && self.selected_row.is_some();
|
||||
self.show_footer = height > 6;
|
||||
self.max_n_rows_to_display =
|
||||
(height - 1 - u16::from(self.show_footer) * (4 + u16::from(self.narrow_term))) as usize;
|
||||
self.scroll_padding = (self.max_n_rows_to_display / 4).min(5);
|
||||
}
|
||||
|
||||
fn update_offset(&mut self) {
|
||||
let Some(selected) = self.selected_row else {
|
||||
return;
|
||||
@ -130,6 +117,36 @@ impl<'a> ListState<'a> {
|
||||
.min(global_max_offset);
|
||||
}
|
||||
|
||||
pub fn set_term_size(&mut self, width: u16, height: u16) {
|
||||
self.term_width = width;
|
||||
self.term_height = height;
|
||||
|
||||
if height == 0 {
|
||||
return;
|
||||
}
|
||||
|
||||
let wide_help_footer_width = 95;
|
||||
// The help footer is shorter when nothing is selected.
|
||||
self.narrow_term = width < wide_help_footer_width && self.selected_row.is_some();
|
||||
|
||||
let header_height = 1;
|
||||
// 2 separator, 1 progress bar, 1-2 footer message.
|
||||
let footer_height = 4 + u16::from(self.narrow_term);
|
||||
self.show_footer = height > header_height + footer_height;
|
||||
|
||||
if self.show_footer {
|
||||
self.separator_line = "─".as_bytes().repeat(width as usize);
|
||||
}
|
||||
|
||||
self.max_n_rows_to_display = height
|
||||
.saturating_sub(header_height + u16::from(self.show_footer) * footer_height)
|
||||
as usize;
|
||||
|
||||
self.scroll_padding = (self.max_n_rows_to_display / 4).min(MAX_SCROLL_PADDING);
|
||||
|
||||
self.update_offset();
|
||||
}
|
||||
|
||||
fn draw_rows(
|
||||
&self,
|
||||
stdout: &mut StdoutLock,
|
||||
@ -196,8 +213,6 @@ impl<'a> ListState<'a> {
|
||||
stdout.write_all(b"Path")?;
|
||||
next_ln_overwrite(stdout)?;
|
||||
|
||||
self.update_offset();
|
||||
|
||||
// Rows
|
||||
let iter = self.app_state.exercises().iter().enumerate();
|
||||
let n_displayed_rows = match self.filter {
|
||||
@ -228,7 +243,7 @@ impl<'a> ListState<'a> {
|
||||
next_ln(stdout)?;
|
||||
|
||||
if self.message.is_empty() {
|
||||
// Help footer
|
||||
// Help footer message
|
||||
if self.selected_row.is_some() {
|
||||
stdout.write_all(
|
||||
"↓/j ↑/k home/g end/G | <c>ontinue at | <r>eset exercise".as_bytes(),
|
||||
@ -240,6 +255,7 @@ impl<'a> ListState<'a> {
|
||||
stdout.write_all(b" | filter ")?;
|
||||
}
|
||||
} else {
|
||||
// Nothing selected (and nothing shown), so only display filter and quit.
|
||||
stdout.write_all(b"filter ")?;
|
||||
}
|
||||
|
||||
@ -262,7 +278,9 @@ impl<'a> ListState<'a> {
|
||||
}
|
||||
Filter::None => stdout.write_all(b"<d>one/<p>ending")?,
|
||||
}
|
||||
|
||||
stdout.write_all(b" | <q>uit list")?;
|
||||
|
||||
if self.narrow_term {
|
||||
next_ln_overwrite(stdout)?;
|
||||
} else {
|
||||
@ -282,6 +300,11 @@ impl<'a> ListState<'a> {
|
||||
stdout.queue(EndSynchronizedUpdate)?.flush()
|
||||
}
|
||||
|
||||
fn set_selected(&mut self, selected: usize) {
|
||||
self.selected_row = Some(selected);
|
||||
self.update_offset();
|
||||
}
|
||||
|
||||
fn update_rows(&mut self) {
|
||||
self.n_rows_with_filter = match self.filter {
|
||||
Filter::Done => self
|
||||
@ -301,13 +324,14 @@ impl<'a> ListState<'a> {
|
||||
|
||||
if self.n_rows_with_filter == 0 {
|
||||
self.selected_row = None;
|
||||
} else {
|
||||
self.selected_row = Some(
|
||||
return;
|
||||
}
|
||||
|
||||
self.set_selected(
|
||||
self.selected_row
|
||||
.map_or(0, |selected| selected.min(self.n_rows_with_filter - 1)),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub fn filter(&self) -> Filter {
|
||||
@ -321,25 +345,25 @@ impl<'a> ListState<'a> {
|
||||
|
||||
pub fn select_next(&mut self) {
|
||||
if let Some(selected) = self.selected_row {
|
||||
self.selected_row = Some((selected + 1).min(self.n_rows_with_filter - 1));
|
||||
self.set_selected((selected + 1).min(self.n_rows_with_filter - 1));
|
||||
}
|
||||
}
|
||||
|
||||
pub fn select_previous(&mut self) {
|
||||
if let Some(selected) = self.selected_row {
|
||||
self.selected_row = Some(selected.saturating_sub(1));
|
||||
self.set_selected(selected.saturating_sub(1));
|
||||
}
|
||||
}
|
||||
|
||||
pub fn select_first(&mut self) {
|
||||
if self.n_rows_with_filter > 0 {
|
||||
self.selected_row = Some(0);
|
||||
self.set_selected(0);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn select_last(&mut self) {
|
||||
if self.n_rows_with_filter > 0 {
|
||||
self.selected_row = Some(self.n_rows_with_filter - 1);
|
||||
self.set_selected(self.n_rows_with_filter - 1);
|
||||
}
|
||||
}
|
||||
|
||||
@ -374,9 +398,12 @@ impl<'a> ListState<'a> {
|
||||
};
|
||||
|
||||
let exercise_ind = self.selected_to_exercise_ind(selected)?;
|
||||
let exercise_path = self.app_state.reset_exercise_by_ind(exercise_ind)?;
|
||||
let exercise_name = self.app_state.reset_exercise_by_ind(exercise_ind)?;
|
||||
self.update_rows();
|
||||
write!(self.message, "The exercise {exercise_path} has been reset")?;
|
||||
write!(
|
||||
self.message,
|
||||
"The exercise `{exercise_name}` has been reset",
|
||||
)?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user