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-rw-r--r--helix-core/src/commands.rs22
-rw-r--r--helix-core/src/selection.rs4
-rw-r--r--helix-core/src/state.rs14
-rw-r--r--helix-core/src/transaction.rs12
-rw-r--r--helix-term/src/editor.rs131
-rw-r--r--helix-term/src/keymap.rs15
6 files changed, 139 insertions, 59 deletions
diff --git a/helix-core/src/commands.rs b/helix-core/src/commands.rs
index 62e97686..a6b74449 100644
--- a/helix-core/src/commands.rs
+++ b/helix-core/src/commands.rs
@@ -1,4 +1,4 @@
-use crate::state::{Direction, Granularity, State};
+use crate::state::{Direction, Granularity, Mode, State};
/// A command is a function that takes the current state and a count, and does a side-effect on the
/// state (usually by creating and applying a transaction).
@@ -48,3 +48,23 @@ pub fn move_line_down(state: &mut State, count: usize) {
count,
);
}
+
+pub fn insert_mode(state: &mut State, _count: usize) {
+ state.mode = Mode::Insert;
+}
+
+pub fn normal_mode(state: &mut State, _count: usize) {
+ state.mode = Mode::Normal;
+}
+
+// TODO: insert means add text just before cursor, on exit we should be on the last letter.
+pub fn insert(state: &mut State, c: char) {
+ // TODO: needs to work with multiple cursors
+ use crate::transaction::ChangeSet;
+
+ let pos = state.selection.primary().head;
+ let changes = ChangeSet::insert(&state.doc, pos, c);
+ // TODO: need to store history
+ changes.apply(state.contents_mut());
+ state.selection = state.selection.clone().map(&changes);
+}
diff --git a/helix-core/src/selection.rs b/helix-core/src/selection.rs
index 3e28c9ce..1c0b6b74 100644
--- a/helix-core/src/selection.rs
+++ b/helix-core/src/selection.rs
@@ -63,8 +63,8 @@ impl Range {
/// Map a range through a set of changes. Returns a new range representing the same position
/// after the changes are applied.
pub fn map(self, changes: &ChangeSet) -> Self {
- let anchor = changes.map_pos(self.anchor, Assoc::Before);
- let head = changes.map_pos(self.head, Assoc::Before);
+ let anchor = changes.map_pos(self.anchor, Assoc::After);
+ let head = changes.map_pos(self.head, Assoc::After);
// TODO: possibly unnecessary
if self.anchor == anchor && self.head == head {
diff --git a/helix-core/src/state.rs b/helix-core/src/state.rs
index 9c227a92..8568c3c3 100644
--- a/helix-core/src/state.rs
+++ b/helix-core/src/state.rs
@@ -1,10 +1,16 @@
use crate::graphemes::{nth_next_grapheme_boundary, nth_prev_grapheme_boundary, RopeGraphemes};
use crate::{Buffer, Rope, RopeSlice, Selection, SelectionRange};
+pub enum Mode {
+ Normal,
+ Insert,
+}
+
/// A state represents the current editor state of a single buffer.
pub struct State {
pub doc: Buffer,
pub selection: Selection,
+ pub mode: Mode,
}
#[derive(Copy, Clone, PartialEq, Eq)]
@@ -26,6 +32,7 @@ impl State {
Self {
doc,
selection: Selection::single(0, 0),
+ mode: Mode::Normal,
}
}
@@ -119,10 +126,15 @@ impl State {
// TODO: update selection in state via transaction
}
- pub fn file(&self) -> &Rope {
+ pub fn contents(&self) -> &Rope {
// used to access file contents for rendering to screen
&self.doc.contents
}
+
+ pub fn contents_mut(&mut self) -> &mut Rope {
+ // used to access file contents for rendering to screen
+ &mut self.doc.contents
+ }
}
/// Coordinates are a 0-indexed line and column pair.
diff --git a/helix-core/src/transaction.rs b/helix-core/src/transaction.rs
index 1619a4db..2d8afc9b 100644
--- a/helix-core/src/transaction.rs
+++ b/helix-core/src/transaction.rs
@@ -47,6 +47,18 @@ impl ChangeSet {
}
}
+ pub fn insert(buf: &Buffer, pos: usize, c: char) -> Self {
+ let len = buf.contents.len_chars();
+ Self {
+ changes: vec![
+ Change::Retain(pos),
+ Change::Insert(Tendril::from_char(c)),
+ Change::Retain(len - pos),
+ ],
+ len,
+ }
+ }
+
// TODO: from iter
/// Combine two changesets together.
diff --git a/helix-term/src/editor.rs b/helix-term/src/editor.rs
index bddc2859..ef4af3dc 100644
--- a/helix-term/src/editor.rs
+++ b/helix-term/src/editor.rs
@@ -9,36 +9,11 @@ use crossterm::{
terminal::{self, disable_raw_mode, enable_raw_mode},
};
use futures::{future::FutureExt, select, StreamExt};
-use helix_core::{state::coords_at_pos, Buffer, State};
+use helix_core::{state::coords_at_pos, state::Mode, Buffer, State};
use std::io::{self, stdout, Write};
use std::path::PathBuf;
use std::time::Duration;
-pub struct BufferComponent<'a> {
- x: u16,
- y: u16,
- contents: Vec<&'a str>,
-}
-
-impl BufferComponent<'_> {
- pub fn render(&self) {
- for (n, line) in self.contents.iter().enumerate() {
- execute!(
- stdout(),
- SetForegroundColor(Color::DarkCyan),
- cursor::MoveTo(self.x, self.y + n as u16),
- Print((n + 1).to_string())
- );
- execute!(
- stdout(),
- SetForegroundColor(Color::Reset),
- cursor::MoveTo(self.x + 2, self.y + n as u16),
- Print(line)
- );
- }
- }
-}
-
static EX: smol::Executor = smol::Executor::new();
pub struct Editor {
@@ -70,21 +45,56 @@ impl Editor {
}
fn render(&mut self) {
- // TODO:
-
match &self.state {
- Some(s) => {
- let view = BufferComponent {
- x: 0,
- y: self.first_line,
- contents: s
- .file()
- .lines_at(self.first_line as usize)
- .take(self.size.1 as usize)
- .map(|x| x.as_str().unwrap())
- .collect::<Vec<&str>>(),
+ Some(state) => {
+ let lines = state
+ .contents()
+ .lines_at(self.first_line as usize)
+ .take(self.size.1 as usize)
+ .map(|x| x.as_str().unwrap());
+
+ let mut stdout = stdout();
+
+ for (n, line) in lines.enumerate() {
+ execute!(
+ stdout,
+ SetForegroundColor(Color::DarkCyan),
+ cursor::MoveTo(0, n as u16),
+ Print((n + 1).to_string())
+ );
+ execute!(
+ stdout,
+ SetForegroundColor(Color::Reset),
+ cursor::MoveTo(2, n as u16),
+ Print(line)
+ );
+ }
+
+ let mode = match state.mode {
+ Mode::Insert => "INS",
+ Mode::Normal => "NOR",
+ };
+
+ execute!(
+ stdout,
+ SetForegroundColor(Color::Reset),
+ cursor::MoveTo(0, self.size.1),
+ Print(mode)
+ );
+
+ // set cursor shape
+ match state.mode {
+ Mode::Insert => write!(stdout, "\x1B[6 q"),
+ Mode::Normal => write!(stdout, "\x1B[2 q"),
};
- view.render();
+
+ // render the cursor
+ let pos = state.selection.primary().head;
+ let coords = coords_at_pos(&state.doc.contents.slice(..), pos);
+ execute!(
+ stdout,
+ cursor::MoveTo((coords.1 + 2) as u16, coords.0 as u16)
+ );
}
None => (),
}
@@ -108,22 +118,30 @@ impl Editor {
break;
}
Some(Ok(Event::Key(event))) => {
- // TODO: handle modes and sequences (`gg`)
- if let Some(command) = keymap.get(&event) {
- if let Some(state) = &mut self.state {
- // TODO: handle count other than 1
- command(state, 1);
- self.render();
- // render the cursor
- let pos = self.state.as_ref().unwrap().selection.primary().head;
- let coords = coords_at_pos(
- &self.state.as_ref().unwrap().doc.contents.slice(..),
- pos,
- );
- execute!(
- stdout(),
- cursor::MoveTo((coords.1 + 2) as u16, coords.0 as u16)
- );
+ if let Some(state) = &mut self.state {
+ match state.mode {
+ Mode::Insert => {
+ match event {
+ KeyEvent {
+ code: KeyCode::Esc, ..
+ } => helix_core::commands::normal_mode(state, 1),
+ KeyEvent {
+ code: KeyCode::Char(c),
+ ..
+ } => helix_core::commands::insert(state, c),
+ _ => (), // skip
+ }
+ self.render();
+ }
+ Mode::Normal => {
+ // TODO: handle modes and sequences (`gg`)
+ if let Some(command) = keymap.get(&event) {
+ // TODO: handle count other than 1
+ command(state, 1);
+
+ self.render();
+ }
+ }
}
}
}
@@ -145,6 +163,9 @@ impl Editor {
self.print_events().await;
+ // reset cursor shape
+ write!(stdout, "\x1B[2 q");
+
execute!(stdout, terminal::LeaveAlternateScreen)?;
disable_raw_mode()?;
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs
index c7da0c89..ddbff3ea 100644
--- a/helix-term/src/keymap.rs
+++ b/helix-term/src/keymap.rs
@@ -116,5 +116,20 @@ pub fn default() -> Keymap {
code: KeyCode::Char('l'),
modifiers: Modifiers::NONE
} => commands::move_char_right as Command,
+ Key {
+ code: KeyCode::Char('i'),
+ modifiers: Modifiers::NONE
+ } => commands::insert_mode as Command,
+ Key {
+ code: KeyCode::Esc,
+ modifiers: Modifiers::NONE
+ } => commands::normal_mode as Command,
)
+
+ // hashmap!(
+ // Key {
+ // code: KeyCode::Esc,
+ // modifiers: Modifiers::NONE
+ // } => commands::normal_mode as Command,
+ // )
}
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-27 18:24:15 +0000