fix: crashes caused by pop-up components (#52)

app/src/app.rs

@@ -155,13 +155,11 @@ impl App {
 				emit!(Render);
 			}
 
-			Event::Select(mut opt, tx) => {
-				opt.position = self.cx.position(opt.position);
+			Event::Select(opt, tx) => {
 				self.cx.select.show(opt, tx);
 				emit!(Render);
 			}
-			Event::Input(mut opt, tx) => {
-				opt.position = self.cx.position(opt.position);
+			Event::Input(opt, tx) => {
 				self.cx.input.show(opt, tx);
 				emit!(Render);
 			}

app/src/context.rs

@@ -1,6 +1,8 @@
 use core::{input::Input, manager::Manager, select::Select, tasks::Tasks, which::Which, Position};
 
 use config::keymap::KeymapLayer;
+use libc::winsize;
+use ratatui::prelude::Rect;
 use shared::tty_size;
 
 pub struct Ctx {
@@ -22,10 +24,41 @@ impl Ctx {
 		}
 	}
 
+	pub(super) fn area(&self, pos: &Position) -> Rect {
+		let winsize { ws_row, ws_col, .. } = tty_size();
+
+		let (x, y) = match pos {
+			Position::None => return Rect::default(),
+			Position::Top(Rect { mut x, mut y, width, height }) => {
+				x = x.min(ws_col.saturating_sub(*width));
+				y = y.min(ws_row.saturating_sub(*height));
+				((tty_size().ws_col / 2).saturating_sub(width / 2) + x, y)
+			}
+			Position::Hovered(rect @ Rect { mut x, y, width, height }) => {
+				let Some(r) =
+					self.manager.hovered().and_then(|h| self.manager.current().rect_current(&h.path))
+				else {
+					return self.area(&Position::Top(*rect));
+				};
+
+				x = x.min(ws_col.saturating_sub(*width));
+				if y + height + r.y + r.height > ws_row {
+					(x + r.x, r.y.saturating_sub(height.saturating_sub(1)))
+				} else {
+					(x + r.x, y + r.y + r.height)
+				}
+			}
+		};
+
+		let (w, h) = pos.dimension().unwrap();
+		Rect { x, y, width: w.min(ws_col.saturating_sub(x)), height: h.min(ws_row.saturating_sub(y)) }
+	}
+
 	#[inline]
 	pub(super) fn cursor(&self) -> Option<(u16, u16)> {
 		if self.input.visible {
-			return Some(self.input.cursor());
+			let Rect { x, y, .. } = self.area(&self.input.position);
+			return Some((x + 1 + self.input.cursor(), y + 1));
 		}
 		None
 	}
@@ -49,17 +82,4 @@ impl Ctx {
 	pub(super) fn image_layer(&self) -> bool {
 		!matches!(self.layer(), KeymapLayer::Which | KeymapLayer::Tasks)
 	}
-
-	pub(super) fn position(&self, pos: Position) -> Position {
-		match pos {
-			Position::Top => Position::Coords((tty_size().ws_col / 2).saturating_sub(25), 2),
-			Position::Hovered => self
-				.manager
-				.hovered()
-				.and_then(|h| self.manager.current().rect_current(&h.path))
-				.map(|r| Position::Coords(r.x, r.y))
-				.unwrap_or_else(|| self.position(Position::Top)),
-			p @ Position::Coords(..) => p,
-		}
-	}
 }

app/src/input/input.rs

@@ -1,4 +1,5 @@
 use core::input::InputMode;
+use std::ops::Range;
 
 use ansi_to_tui::IntoText;
 use ratatui::{buffer::Buffer, layout::Rect, style::{Color, Style}, text::{Line, Text}, widgets::{Block, BorderType, Borders, Clear, Paragraph, Widget}};
@@ -17,7 +18,7 @@ impl<'a> Input<'a> {
 impl<'a> Widget for Input<'a> {
 	fn render(self, _: Rect, buf: &mut Buffer) {
 		let input = &self.cx.input;
-		let area = input.area();
+		let area = self.cx.area(&input.position);
 
 		let value = if let Ok(v) = input.value_pretty() {
 			v.into_text().unwrap()
@@ -41,8 +42,11 @@ impl<'a> Widget for Input<'a> {
 			.style(Style::new().fg(Color::White))
 			.render(area, buf);
 
-		if let Some(selected) = input.selected() {
-			buf.set_style(selected, Style::new().bg(Color::Rgb(72, 77, 102)))
+		if let Some(Range { start, end }) = input.selected() {
+			buf.set_style(
+				Rect { x: area.x + 1 + start, y: area.y + 1, width: end - start, height: 1 },
+				Style::new().bg(Color::Rgb(72, 77, 102)),
+			)
 		}
 
 		let _ = match input.mode() {

app/src/select/select.rs

@@ -13,7 +13,7 @@ impl<'a> Select<'a> {
 impl<'a> Widget for Select<'a> {
 	fn render(self, _: Rect, buf: &mut Buffer) {
 		let select = &self.cx.select;
-		let area = select.area();
+		let area = self.cx.area(&select.position);
 
 		let items = select
 			.window()

config/src/preset.rs

@@ -31,7 +31,7 @@ impl Preset {
 
 	fn merge_str(user: &str, base: &str) -> String {
 		let path = BaseDirectories::new().unwrap().get_config_file(user);
-		let mut user = fs::read_to_string(path).unwrap_or("".to_string()).parse::<Table>().unwrap();
+		let mut user = fs::read_to_string(path).unwrap_or_default().parse::<Table>().unwrap();
 
 		let base = base.parse::<Table>().unwrap();
 		Self::merge(&mut user, &base, 2);

core/src/input/input.rs

@@ -1,7 +1,6 @@
 use std::ops::Range;
 
 use anyhow::{anyhow, Result};
-use ratatui::layout::Rect;
 use shared::CharKind;
 use tokio::sync::oneshot::Sender;
 use unicode_width::UnicodeWidthStr;
@@ -14,9 +13,9 @@ pub struct Input {
 	snaps:       InputSnaps,
 	pub visible: bool,
 
-	title:    String,
-	position: (u16, u16),
-	callback: Option<Sender<Result<String>>>,
+	title:        String,
+	pub position: Position,
+	callback:     Option<Sender<Result<String>>>,
 
 	// Shell
 	pub(super) highlight: bool,
@@ -29,10 +28,7 @@ impl Input {
 		self.visible = true;
 
 		self.title = opt.title;
-		self.position = match opt.position {
-			Position::Coords(x, y) => (x, y),
-			_ => unreachable!(),
-		};
+		self.position = opt.position;
 		self.callback = Some(tx);
 
 		// Shell
@@ -317,21 +313,12 @@ impl Input {
 	pub fn mode(&self) -> InputMode { self.snap().mode }
 
 	#[inline]
-	pub fn area(&self) -> Rect {
-		// TODO: hardcode
-		Rect { x: self.position.0, y: self.position.1 + 2, width: 50, height: 3 }
-	}
-
-	#[inline]
-	pub fn cursor(&self) -> (u16, u16) {
+	pub fn cursor(&self) -> u16 {
 		let snap = self.snap();
-		let width = snap.slice(snap.offset..snap.cursor).width() as u16;
-
-		let area = self.area();
-		(area.x + width + 1, area.y + 1)
+		snap.slice(snap.offset..snap.cursor).width() as u16
 	}
 
-	pub fn selected(&self) -> Option<Rect> {
+	pub fn selected(&self) -> Option<Range<u16>> {
 		let snap = self.snap();
 		let start = snap.op.start()?;
 
@@ -341,12 +328,8 @@ impl Input {
 		let win = snap.window();
 		let Range { start, end } = start.max(win.start)..end.min(win.end);
 
-		Some(Rect {
-			x:      self.position.0 + 1 + snap.slice(snap.offset..start).width() as u16,
-			y:      self.position.1 + 3,
-			width:  snap.slice(start..end).width() as u16,
-			height: 1,
-		})
+		let s = snap.slice(snap.offset..start).width() as u16;
+		Some(s..s + snap.slice(start..end).width() as u16)
 	}
 
 	#[inline]

core/src/input/option.rs

@@ -1,3 +1,5 @@
+use ratatui::prelude::Rect;
+
 use crate::Position;
 
 pub struct InputOpt {
@@ -12,7 +14,7 @@ impl InputOpt {
 		Self {
 			title:     title.as_ref().to_owned(),
 			value:     String::new(),
-			position:  Position::Top,
+			position:  Position::Top(/* TODO: hardcode */ Rect { x: 0, y: 2, width: 50, height: 3 }),
 			highlight: false,
 		}
 	}
@@ -21,7 +23,10 @@ impl InputOpt {
 		Self {
 			title:     title.as_ref().to_owned(),
 			value:     String::new(),
-			position:  Position::Hovered,
+			position:  Position::Hovered(
+				// TODO: hardcode
+				Rect { x: 0, y: 1, width: 50, height: 3 },
+			),
 			highlight: false,
 		}
 	}

core/src/manager/manager.rs

@@ -6,7 +6,7 @@ use shared::MIME_DIR;
 use tokio::fs;
 
 use super::{PreviewData, Tab, Tabs, Watcher};
-use crate::{emit, external, files::{File, FilesOp}, input::InputOpt, manager::Folder, select::SelectOpt, tasks::Tasks, Position};
+use crate::{emit, external, files::{File, FilesOp}, input::InputOpt, manager::Folder, select::SelectOpt, tasks::Tasks};
 
 pub struct Manager {
 	tabs:   Tabs,
@@ -161,11 +161,10 @@ impl Manager {
 				return;
 			}
 
-			let result = emit!(Select(SelectOpt {
-				title:    "Open with:".to_string(),
-				items:    openers.iter().map(|o| o.display_name.clone()).collect(),
-				position: Position::Hovered,
-			}));
+			let result = emit!(Select(SelectOpt::hovered(
+				"Open with:",
+				openers.iter().map(|o| o.display_name.clone()).collect()
+			)));
 			if let Ok(choice) = result.await {
 				emit!(Open(files, Some(openers[choice].clone())));
 			}

core/src/position.rs

@@ -1,5 +1,23 @@
+use ratatui::prelude::Rect;
+
+#[derive(Default)]
 pub enum Position {
-	Top,
-	Hovered,
-	Coords(u16, u16),
+	#[default]
+	None,
+	Top(Rect),
+	Hovered(Rect),
+}
+
+impl Position {
+	#[inline]
+	pub fn rect(&self) -> Option<Rect> {
+		match self {
+			Position::None => None,
+			Position::Top(rect) => Some(*rect),
+			Position::Hovered(rect) => Some(*rect),
+		}
+	}
+
+	#[inline]
+	pub fn dimension(&self) -> Option<(u16, u16)> { self.rect().map(|r| (r.width, r.height)) }
 }

core/src/select/mod.rs

@@ -1,5 +1,7 @@
+mod option;
 mod select;
 
+pub use option::*;
 pub use select::*;
 
 pub const SELECT_PADDING: u16 = 2;

core/src/select/option.rs

@@ -0,0 +1,30 @@
+use ratatui::prelude::Rect;
+
+use crate::Position;
+
+pub struct SelectOpt {
+	pub title:    String,
+	pub items:    Vec<String>,
+	pub position: Position,
+}
+
+impl SelectOpt {
+	pub fn top(title: &str, items: Vec<String>) -> Self {
+		Self {
+			title: title.to_owned(),
+			items,
+			position: Position::Top(/* TODO: hardcode */ Rect { x: 0, y: 2, width: 50, height: 3 }),
+		}
+	}
+
+	pub fn hovered(title: &str, items: Vec<String>) -> Self {
+		Self {
+			title: title.to_owned(),
+			items,
+			position: Position::Hovered(
+				// TODO: hardcode
+				Rect { x: 0, y: 1, width: 50, height: 3 },
+			),
+		}
+	}
+}

core/src/select/select.rs

@@ -1,16 +1,15 @@
 use anyhow::{anyhow, Result};
-use ratatui::prelude::Rect;
 use shared::tty_size;
 use tokio::sync::oneshot::Sender;
 
-use super::SELECT_PADDING;
+use super::{SelectOpt, SELECT_PADDING};
 use crate::Position;
 
 #[derive(Default)]
 pub struct Select {
-	title:    String,
-	items:    Vec<String>,
-	position: (u16, u16),
+	title:        String,
+	items:        Vec<String>,
+	pub position: Position,
 
 	offset:   usize,
 	cursor:   usize,
@@ -19,22 +18,14 @@ pub struct Select {
 	pub visible: bool,
 }
 
-pub struct SelectOpt {
-	pub title:    String,
-	pub items:    Vec<String>,
-	pub position: Position,
-}
-
 impl Select {
 	pub fn show(&mut self, opt: SelectOpt, tx: Sender<Result<usize>>) {
 		self.close(false);
 
 		self.title = opt.title;
 		self.items = opt.items;
-		self.position = match opt.position {
-			Position::Coords(x, y) => (x, y),
-			_ => unreachable!(),
-		};
+		self.position = opt.position;
+
 		self.callback = Some(tx);
 		self.visible = true;
 	}
@@ -96,14 +87,4 @@ impl Select {
 
 	#[inline]
 	pub fn rel_cursor(&self) -> usize { self.cursor - self.offset }
-
-	#[inline]
-	pub fn area(&self) -> Rect {
-		Rect {
-			x:      self.position.0,
-			y:      self.position.1 + 2,
-			width:  50,
-			height: self.limit() as u16 + SELECT_PADDING,
-		}
-	}
 }