mirror of
https://github.com/ChrisTitusTech/linutil.git
synced 2024-11-05 13:15:21 +00:00
Merge pull request #26 from GHaxZ/main
Add action preview functionality
This commit is contained in:
commit
96b39fab18
142
src/list.rs
142
src/list.rs
|
@ -1,4 +1,6 @@
|
|||
use crate::theme::*;
|
||||
use std::usize;
|
||||
|
||||
use crate::{float::floating_window, theme::*};
|
||||
use crossterm::event::{KeyCode, KeyEvent, KeyEventKind};
|
||||
use ego_tree::{tree, NodeId};
|
||||
use ratatui::{
|
||||
|
@ -25,6 +27,24 @@ pub struct CustomList {
|
|||
/// This is the state asociated with the list widget, used to display the selection in the
|
||||
/// widget
|
||||
list_state: ListState,
|
||||
/// This stores the preview windows state. If it is None, it will not be displayed.
|
||||
/// If it is Some, we show it with the content of the selected item
|
||||
preview_window_state: Option<PreviewWindowState>,
|
||||
}
|
||||
|
||||
/// This struct stores the preview window state
|
||||
struct PreviewWindowState {
|
||||
/// The text inside the window
|
||||
text: Vec<String>,
|
||||
/// The current line scroll
|
||||
scroll: usize,
|
||||
}
|
||||
|
||||
impl PreviewWindowState {
|
||||
/// Create a new PreviewWindowState
|
||||
pub fn new(text: Vec<String>) -> Self {
|
||||
Self { text, scroll: 0 }
|
||||
}
|
||||
}
|
||||
|
||||
impl CustomList {
|
||||
|
@ -93,6 +113,8 @@ impl CustomList {
|
|||
inner_tree: tree,
|
||||
visit_stack: vec![root_id],
|
||||
list_state: ListState::default().with_selected(Some(0)),
|
||||
// By default the PreviewWindowState is set to None, so it is not being shown
|
||||
preview_window_state: None,
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -139,6 +161,33 @@ impl CustomList {
|
|||
|
||||
// Render it
|
||||
frame.render_stateful_widget(list, area, &mut self.list_state);
|
||||
|
||||
// Draw the preview window if it's active
|
||||
if let Some(pw_state) = &self.preview_window_state {
|
||||
// Set the window to be floating
|
||||
let floating_area = floating_window(area);
|
||||
|
||||
// Draw the preview windows lines
|
||||
let lines: Vec<Line> = pw_state
|
||||
.text
|
||||
.iter()
|
||||
.skip(pw_state.scroll)
|
||||
.take(floating_area.height as usize)
|
||||
.map(|line| Line::from(line.as_str()))
|
||||
.collect();
|
||||
|
||||
// Create list widget
|
||||
let list = List::new(lines)
|
||||
.block(
|
||||
Block::default()
|
||||
.borders(Borders::ALL)
|
||||
.title("Action preview"),
|
||||
)
|
||||
.highlight_style(Style::default().reversed());
|
||||
|
||||
// Finally render the preview window
|
||||
frame.render_widget(list, floating_area);
|
||||
}
|
||||
}
|
||||
|
||||
/// Handle key events, we are only interested in `Press` and `Repeat` events
|
||||
|
@ -149,17 +198,62 @@ impl CustomList {
|
|||
match event.code {
|
||||
// Damm you Up arrow, use vim lol
|
||||
KeyCode::Char('j') | KeyCode::Down => {
|
||||
// If the preview window is active, scroll down and consume the scroll action,
|
||||
// so the scroll does not happen in the main window as well
|
||||
if self.preview_window_state.is_some() {
|
||||
self.scroll_preview_window_down();
|
||||
return None;
|
||||
}
|
||||
|
||||
self.try_scroll_down();
|
||||
None
|
||||
}
|
||||
KeyCode::Char('k') | KeyCode::Up => {
|
||||
// If the preview window is active, scroll up and consume the scroll action,
|
||||
// so the scroll does not happen in the main window as well
|
||||
if self.preview_window_state.is_some() {
|
||||
self.scroll_preview_window_up();
|
||||
return None;
|
||||
}
|
||||
|
||||
self.try_scroll_up();
|
||||
None
|
||||
}
|
||||
// The 'p' key toggles the preview on and off
|
||||
KeyCode::Char('p') => {
|
||||
self.toggle_preview_window();
|
||||
None
|
||||
}
|
||||
KeyCode::Enter => self.handle_enter(),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
fn toggle_preview_window(&mut self) {
|
||||
// If the preview window is active, disable it
|
||||
if self.preview_window_state.is_some() {
|
||||
self.preview_window_state = None;
|
||||
} else {
|
||||
// If the preview windows is not active, show it
|
||||
|
||||
// Get the selected command
|
||||
if let Some(selected_command) = self.get_selected_command() {
|
||||
// If command is a folder, we don't display a preview
|
||||
if selected_command == "" {
|
||||
return;
|
||||
}
|
||||
|
||||
// Reconstruct the line breaks and file formatting after the
|
||||
// 'include_str!()' call in the node
|
||||
let lines: Vec<String> = selected_command
|
||||
.lines()
|
||||
.map(|line| line.to_string())
|
||||
.collect();
|
||||
|
||||
// Show the preview window with the text lines
|
||||
self.preview_window_state = Some(PreviewWindowState::new(lines));
|
||||
}
|
||||
}
|
||||
}
|
||||
fn try_scroll_up(&mut self) {
|
||||
self.list_state
|
||||
.select(Some(self.list_state.selected().unwrap().saturating_sub(1)));
|
||||
|
@ -184,6 +278,52 @@ impl CustomList {
|
|||
}
|
||||
}
|
||||
|
||||
/// Scroll the preview window down
|
||||
fn scroll_preview_window_down(&mut self) {
|
||||
if let Some(pw_state) = &mut self.preview_window_state {
|
||||
if pw_state.scroll + 1 < pw_state.text.len() {
|
||||
pw_state.scroll += 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Scroll the preview window up
|
||||
fn scroll_preview_window_up(&mut self) {
|
||||
if let Some(pw_state) = &mut self.preview_window_state {
|
||||
if pw_state.scroll > 0 {
|
||||
pw_state.scroll = pw_state.scroll.saturating_sub(1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// This method return the currently selected command, or None if no command is selected.
|
||||
/// It was extracted from the 'handle_enter()'
|
||||
///
|
||||
/// This could probably be integrated into the 'handle_enter()' method as to avoid code
|
||||
/// duplication, but I don't want to make too major changes to the codebase.
|
||||
fn get_selected_command(&self) -> Option<&'static str> {
|
||||
let curr = self
|
||||
.inner_tree
|
||||
.get(*self.visit_stack.last().unwrap())
|
||||
.unwrap();
|
||||
let selected = self.list_state.selected().unwrap();
|
||||
|
||||
// If we are not at the root and the first item is selected, it's the `..` item
|
||||
if !self.at_root() && selected == 0 {
|
||||
return None;
|
||||
}
|
||||
|
||||
for (mut idx, node) in curr.children().enumerate() {
|
||||
if !self.at_root() {
|
||||
idx += 1;
|
||||
}
|
||||
if idx == selected {
|
||||
return Some(node.value().command);
|
||||
}
|
||||
}
|
||||
None
|
||||
}
|
||||
|
||||
/// Handles the <Enter> key. This key can do 3 things:
|
||||
/// - Run a command, if it is the currently selected item,
|
||||
/// - Go up a directory
|
||||
|
|
Loading…
Reference in New Issue
Block a user