mirror of
https://github.com/helix-editor/helix.git
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Command needs access to view information for certain changes.
This commit is contained in:
parent
1303ffd94a
commit
48330ddb5f
@ -1,5 +1,4 @@
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#![allow(unused)]
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pub mod commands;
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pub mod graphemes;
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mod position;
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mod selection;
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@ -11,7 +10,7 @@
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pub use tendril::StrTendril as Tendril;
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pub use position::Position;
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pub use selection::Range as SelectionRange;
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pub use selection::Range;
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pub use selection::Selection;
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pub use syntax::Syntax;
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@ -1,5 +1,5 @@
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use crate::graphemes::{nth_next_grapheme_boundary, nth_prev_grapheme_boundary, RopeGraphemes};
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use crate::{Position, Rope, RopeSlice, Selection, SelectionRange, Syntax};
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use crate::{Position, Range, Rope, RopeSlice, Selection, Syntax};
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use anyhow::Error;
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use std::path::PathBuf;
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@ -12,11 +12,12 @@ pub enum Mode {
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/// A state represents the current editor state of a single buffer.
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pub struct State {
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// TODO: fields should be private but we need to refactor commands.rs first
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/// Path to file on disk.
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pub(crate) path: Option<PathBuf>,
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pub(crate) doc: Rope,
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pub(crate) selection: Selection,
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pub(crate) mode: Mode,
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pub path: Option<PathBuf>,
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pub doc: Rope,
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pub selection: Selection,
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pub mode: Mode,
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//
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pub syntax: Option<Syntax>,
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@ -189,7 +190,7 @@ pub fn move_selection(
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// } else {
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let pos = self.move_pos(range.head, dir, granularity, count);
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// };
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SelectionRange::new(pos, pos)
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Range::new(pos, pos)
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})
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}
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@ -201,7 +202,7 @@ pub fn extend_selection(
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) -> Selection {
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self.selection.transform(|range| {
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let pos = self.move_pos(range.head, dir, granularity, count);
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SelectionRange::new(range.anchor, pos)
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Range::new(range.anchor, pos)
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})
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}
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}
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@ -1,4 +1,4 @@
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use crate::{Rope, Selection, SelectionRange, State, Tendril};
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use crate::{Range, Rope, Selection, State, Tendril};
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/// (from, to, replacement)
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pub type Change = (usize, usize, Option<Tendril>);
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@ -387,7 +387,7 @@ pub fn change<I>(state: &State, changes: I) -> Self
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/// Generate a transaction with a change per selection range.
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pub fn change_by_selection<F>(state: &State, f: F) -> Self
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where
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F: Fn(&SelectionRange) -> Change,
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F: Fn(&Range) -> Change,
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{
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Self::change(state, state.selection.ranges().iter().map(f))
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}
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@ -1,32 +1,42 @@
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use crate::graphemes;
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use crate::selection::{Range, Selection};
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use crate::state::{Direction, Granularity, Mode, State};
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use crate::transaction::{ChangeSet, Transaction};
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use crate::Tendril;
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use helix_core::{
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graphemes,
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state::{Direction, Granularity, Mode, State},
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ChangeSet, Range, Selection, Tendril, Transaction,
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};
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use crate::editor::View;
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/// A command is a function that takes the current state and a count, and does a side-effect on the
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/// state (usually by creating and applying a transaction).
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pub type Command = fn(state: &mut State, count: usize);
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pub type Command = fn(view: &mut View, count: usize);
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pub fn move_char_left(state: &mut State, count: usize) {
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pub fn move_char_left(view: &mut View, count: usize) {
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// TODO: use a transaction
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let selection = state.move_selection(Direction::Backward, Granularity::Character, count);
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state.selection = selection;
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let selection = view
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.state
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.move_selection(Direction::Backward, Granularity::Character, count);
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view.state.selection = selection;
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}
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pub fn move_char_right(state: &mut State, count: usize) {
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pub fn move_char_right(view: &mut View, count: usize) {
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// TODO: use a transaction
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state.selection = state.move_selection(Direction::Forward, Granularity::Character, count);
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view.state.selection =
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view.state
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.move_selection(Direction::Forward, Granularity::Character, count);
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}
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pub fn move_line_up(state: &mut State, count: usize) {
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pub fn move_line_up(view: &mut View, count: usize) {
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// TODO: use a transaction
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state.selection = state.move_selection(Direction::Backward, Granularity::Line, count);
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view.state.selection = view
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.state
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.move_selection(Direction::Backward, Granularity::Line, count);
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}
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pub fn move_line_down(state: &mut State, count: usize) {
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pub fn move_line_down(view: &mut View, count: usize) {
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// TODO: use a transaction
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state.selection = state.move_selection(Direction::Forward, Granularity::Line, count);
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view.state.selection = view
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.state
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.move_selection(Direction::Forward, Granularity::Line, count);
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}
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// avoid select by default by having a visual mode switch that makes movements into selects
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@ -37,21 +47,22 @@ pub fn move_line_down(state: &mut State, count: usize) {
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// lastly, if it was append mode we shift cursor by 1?
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// inserts at the start of each selection
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pub fn insert_mode(state: &mut State, _count: usize) {
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state.mode = Mode::Insert;
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pub fn insert_mode(view: &mut View, _count: usize) {
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view.state.mode = Mode::Insert;
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state.selection = state
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view.state.selection = view
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.state
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.selection
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.transform(|range| Range::new(range.to(), range.from()))
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}
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// inserts at the end of each selection
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pub fn append_mode(state: &mut State, _count: usize) {
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state.mode = Mode::Insert;
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pub fn append_mode(view: &mut View, _count: usize) {
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view.state.mode = Mode::Insert;
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// TODO: as transaction
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let text = &state.doc.slice(..);
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state.selection = state.selection.transform(|range| {
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let text = &view.state.doc.slice(..);
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view.state.selection = view.state.selection.transform(|range| {
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// TODO: to() + next char
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Range::new(
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range.from(),
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@ -78,63 +89,63 @@ fn selection_lines(state: &State) -> Vec<usize> {
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}
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// I inserts at the start of each line with a selection
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pub fn prepend_to_line(state: &mut State, _count: usize) {
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state.mode = Mode::Insert;
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pub fn prepend_to_line(view: &mut View, _count: usize) {
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view.state.mode = Mode::Insert;
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let lines = selection_lines(state);
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let lines = selection_lines(&view.state);
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let positions = lines
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.into_iter()
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.map(|index| {
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// adjust all positions to the start of the line.
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state.doc.line_to_char(index)
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view.state.doc.line_to_char(index)
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})
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.map(|pos| Range::new(pos, pos));
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let selection = Selection::new(positions.collect(), 0);
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let transaction = Transaction::new(state).with_selection(selection);
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let transaction = Transaction::new(&mut view.state).with_selection(selection);
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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// A inserts at the end of each line with a selection
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pub fn append_to_line(state: &mut State, _count: usize) {
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state.mode = Mode::Insert;
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pub fn append_to_line(view: &mut View, _count: usize) {
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view.state.mode = Mode::Insert;
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let lines = selection_lines(state);
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let lines = selection_lines(&view.state);
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let positions = lines
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.into_iter()
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.map(|index| {
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// adjust all positions to the end of the line.
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let line = state.doc.line(index);
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let line_start = state.doc.line_to_char(index);
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let line = view.state.doc.line(index);
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let line_start = view.state.doc.line_to_char(index);
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line_start + line.len_chars() - 1
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})
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.map(|pos| Range::new(pos, pos));
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let selection = Selection::new(positions.collect(), 0);
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let transaction = Transaction::new(state).with_selection(selection);
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let transaction = Transaction::new(&mut view.state).with_selection(selection);
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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// o inserts a new line after each line with a selection
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pub fn open_below(state: &mut State, _count: usize) {
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state.mode = Mode::Insert;
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pub fn open_below(view: &mut View, _count: usize) {
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view.state.mode = Mode::Insert;
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let lines = selection_lines(state);
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let lines = selection_lines(&view.state);
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let positions: Vec<_> = lines
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.into_iter()
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.map(|index| {
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// adjust all positions to the end of the line.
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let line = state.doc.line(index);
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let line_start = state.doc.line_to_char(index);
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let line = view.state.doc.line(index);
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let line_start = view.state.doc.line_to_char(index);
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line_start + line.len_chars()
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})
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.collect();
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@ -155,51 +166,51 @@ pub fn open_below(state: &mut State, _count: usize) {
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0,
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);
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let transaction = Transaction::change(state, changes).with_selection(selection);
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let transaction = Transaction::change(&view.state, changes).with_selection(selection);
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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// O inserts a new line before each line with a selection
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pub fn normal_mode(state: &mut State, _count: usize) {
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pub fn normal_mode(view: &mut View, _count: usize) {
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// TODO: if leaving append mode, move cursor back by 1
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state.mode = Mode::Normal;
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view.state.mode = Mode::Normal;
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}
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// TODO: insert means add text just before cursor, on exit we should be on the last letter.
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pub fn insert_char(state: &mut State, c: char) {
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pub fn insert_char(view: &mut View, c: char) {
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let c = Tendril::from_char(c);
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let transaction = Transaction::insert(&state, c);
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let transaction = Transaction::insert(&view.state, c);
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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// TODO: handle indent-aware delete
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pub fn delete_char_backward(state: &mut State, count: usize) {
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let text = &state.doc.slice(..);
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let transaction = Transaction::change_by_selection(state, |range| {
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pub fn delete_char_backward(view: &mut View, count: usize) {
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let text = &view.state.doc.slice(..);
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let transaction = Transaction::change_by_selection(&view.state, |range| {
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(
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graphemes::nth_prev_grapheme_boundary(text, range.head, count),
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range.head,
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None,
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)
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});
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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pub fn delete_char_forward(state: &mut State, count: usize) {
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let text = &state.doc.slice(..);
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let transaction = Transaction::change_by_selection(state, |range| {
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pub fn delete_char_forward(view: &mut View, count: usize) {
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let text = &view.state.doc.slice(..);
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let transaction = Transaction::change_by_selection(&view.state, |range| {
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(
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graphemes::nth_next_grapheme_boundary(text, range.head, count),
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range.head,
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None,
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)
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});
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transaction.apply(state);
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transaction.apply(&mut view.state);
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// TODO: need to store into history if successful
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}
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@ -1,4 +1,4 @@
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use crate::{keymap, theme::Theme, Args};
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use crate::{commands, keymap, theme::Theme, Args};
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use helix_core::{
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state::coords_at_pos,
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state::Mode,
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@ -31,10 +31,15 @@
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static EX: smol::Executor = smol::Executor::new();
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pub struct View {
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pub state: State,
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pub first_line: u16,
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pub size: (u16, u16),
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}
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pub struct Editor {
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terminal: Terminal,
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state: Option<State>,
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first_line: u16,
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view: Option<View>,
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size: (u16, u16),
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surface: Surface,
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cache: Surface,
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@ -52,8 +57,7 @@ pub fn new(mut args: Args) -> Result<Self, Error> {
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let mut editor = Editor {
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terminal,
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state: None,
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first_line: 0,
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view: None,
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size,
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surface: Surface::empty(area),
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cache: Surface::empty(area),
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@ -75,7 +79,14 @@ pub fn open(&mut self, path: PathBuf) -> Result<(), Error> {
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.as_mut()
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.unwrap()
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.configure(self.theme.scopes());
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self.state = Some(state);
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let view = View {
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state,
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first_line: 0,
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size: self.size,
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};
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self.view = Some(view);
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Ok(())
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}
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@ -83,8 +94,8 @@ fn render(&mut self) {
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use tui::backend::Backend;
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use tui::style::Color;
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// TODO: ideally not mut but highlights require it because of cursor cache
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match &mut self.state {
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Some(state) => {
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match &mut self.view {
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Some(view) => {
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let area = Rect::new(0, 0, self.size.0, self.size.1);
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let mut stdout = stdout();
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self.surface.reset(); // reset is faster than allocating new empty surface
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@ -97,18 +108,18 @@ fn render(&mut self) {
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let viewport = Rect::new(offset, 0, self.size.0, self.size.1 - 1); // - 1 for statusline
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// TODO: inefficient, should feed chunks.iter() to tree_sitter.parse_with(|offset, pos|)
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let source_code = state.doc().to_string();
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let source_code = view.state.doc().to_string();
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let last_line = std::cmp::min(
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(self.first_line + viewport.height - 1) as usize,
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state.doc().len_lines() - 1,
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(view.first_line + viewport.height - 1) as usize,
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view.state.doc().len_lines() - 1,
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);
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let range = {
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// calculate viewport byte ranges
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let start = state.doc().line_to_byte(self.first_line.into());
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let end = state.doc().line_to_byte(last_line)
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+ state.doc().line(last_line).len_bytes();
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let start = view.state.doc().line_to_byte(view.first_line.into());
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let end = view.state.doc().line_to_byte(last_line)
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+ view.state.doc().line(last_line).len_bytes();
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start..end
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};
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@ -117,7 +128,8 @@ fn render(&mut self) {
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// TODO: cache highlight results
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// TODO: only recalculate when state.doc is actually modified
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let highlights: Vec<_> = state
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let highlights: Vec<_> = view
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.state
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.syntax
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.as_mut()
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.unwrap()
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@ -141,10 +153,10 @@ fn render(&mut self) {
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HighlightEvent::Source { start, end } => {
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// TODO: filter out spans out of viewport for now..
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let start = state.doc().byte_to_char(start);
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let end = state.doc().byte_to_char(end);
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let start = view.state.doc().byte_to_char(start);
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let end = view.state.doc().byte_to_char(end);
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let text = state.doc().slice(start..end);
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let text = view.state.doc().slice(start..end);
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use helix_core::graphemes::{grapheme_width, RopeGraphemes};
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@ -191,7 +203,7 @@ fn render(&mut self) {
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let mut line = 0;
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let style = self.theme.get("ui.linenr");
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for i in self.first_line..(last_line as u16) {
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for i in view.first_line..(last_line as u16) {
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self.surface
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.set_stringn(0, line, format!("{:>5}", i + 1), 5, style); // lavender
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line += 1;
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@ -223,7 +235,7 @@ fn render(&mut self) {
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// }
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// statusline
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let mode = match state.mode() {
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let mode = match view.state.mode() {
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Mode::Insert => "INS",
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Mode::Normal => "NOR",
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};
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@ -235,7 +247,7 @@ fn render(&mut self) {
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let text_color = Style::default().fg(Color::Rgb(219, 191, 239)); // lilac
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self.surface
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.set_string(1, self.size.1 - 1, mode, text_color);
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if let Some(path) = state.path() {
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if let Some(path) = view.state.path() {
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self.surface
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.set_string(6, self.size.1 - 1, path.to_string_lossy(), text_color);
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}
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@ -247,19 +259,19 @@ fn render(&mut self) {
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std::mem::swap(&mut self.surface, &mut self.cache);
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// set cursor shape
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match state.mode() {
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match view.state.mode() {
|
||||
Mode::Insert => write!(stdout, "\x1B[6 q"),
|
||||
Mode::Normal => write!(stdout, "\x1B[2 q"),
|
||||
};
|
||||
|
||||
// render the cursor
|
||||
let pos = state.selection().cursor();
|
||||
let coords = coords_at_pos(&state.doc().slice(..), pos);
|
||||
let pos = view.state.selection().cursor();
|
||||
let coords = coords_at_pos(&view.state.doc().slice(..), pos);
|
||||
execute!(
|
||||
stdout,
|
||||
cursor::MoveTo(
|
||||
coords.col as u16 + viewport.x,
|
||||
coords.row as u16 - self.first_line + viewport.y,
|
||||
coords.row as u16 - view.first_line + viewport.y,
|
||||
)
|
||||
);
|
||||
}
|
||||
@ -295,29 +307,29 @@ pub async fn event_loop(&mut self) {
|
||||
break;
|
||||
}
|
||||
Some(Ok(Event::Key(event))) => {
|
||||
if let Some(state) = &mut self.state {
|
||||
match state.mode() {
|
||||
if let Some(view) = &mut self.view {
|
||||
match view.state.mode() {
|
||||
Mode::Insert => {
|
||||
match event {
|
||||
KeyEvent {
|
||||
code: KeyCode::Esc, ..
|
||||
} => helix_core::commands::normal_mode(state, 1),
|
||||
} => commands::normal_mode(view, 1),
|
||||
KeyEvent {
|
||||
code: KeyCode::Backspace,
|
||||
..
|
||||
} => helix_core::commands::delete_char_backward(state, 1),
|
||||
} => commands::delete_char_backward(view, 1),
|
||||
KeyEvent {
|
||||
code: KeyCode::Delete,
|
||||
..
|
||||
} => helix_core::commands::delete_char_forward(state, 1),
|
||||
} => commands::delete_char_forward(view, 1),
|
||||
KeyEvent {
|
||||
code: KeyCode::Char(c),
|
||||
..
|
||||
} => helix_core::commands::insert_char(state, c),
|
||||
} => commands::insert_char(view, c),
|
||||
KeyEvent {
|
||||
code: KeyCode::Enter,
|
||||
..
|
||||
} => helix_core::commands::insert_char(state, '\n'),
|
||||
} => commands::insert_char(view, '\n'),
|
||||
_ => (), // skip
|
||||
}
|
||||
// TODO: simplistic ensure cursor in view for now
|
||||
@ -329,7 +341,7 @@ pub async fn event_loop(&mut self) {
|
||||
// TODO: handle modes and sequences (`gg`)
|
||||
if let Some(command) = keymap.get(&event) {
|
||||
// TODO: handle count other than 1
|
||||
command(state, 1);
|
||||
command(view, 1);
|
||||
|
||||
// TODO: simplistic ensure cursor in view for now
|
||||
self.ensure_cursor_in_view();
|
||||
@ -350,10 +362,10 @@ pub async fn event_loop(&mut self) {
|
||||
}
|
||||
|
||||
fn ensure_cursor_in_view(&mut self) {
|
||||
if let Some(state) = &mut self.state {
|
||||
let cursor = state.selection().cursor();
|
||||
let line = state.doc().char_to_line(cursor) as u16;
|
||||
let document_end = self.first_line + self.size.1.saturating_sub(1) - 1;
|
||||
if let Some(view) = &mut self.view {
|
||||
let cursor = view.state.selection().cursor();
|
||||
let line = view.state.doc().char_to_line(cursor) as u16;
|
||||
let document_end = view.first_line + self.size.1.saturating_sub(1) - 1;
|
||||
|
||||
let padding = 5u16;
|
||||
|
||||
@ -361,10 +373,10 @@ fn ensure_cursor_in_view(&mut self) {
|
||||
|
||||
if line > document_end.saturating_sub(padding) {
|
||||
// scroll down
|
||||
self.first_line += line - (document_end.saturating_sub(padding));
|
||||
} else if line < self.first_line + padding {
|
||||
view.first_line += line - (document_end.saturating_sub(padding));
|
||||
} else if line < view.first_line + padding {
|
||||
// scroll up
|
||||
self.first_line = line.saturating_sub(padding);
|
||||
view.first_line = line.saturating_sub(padding);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -1,9 +1,9 @@
|
||||
use crate::commands::{self, Command};
|
||||
use crossterm::{
|
||||
event::{KeyCode, KeyEvent as Key, KeyModifiers as Modifiers},
|
||||
execute,
|
||||
style::Print,
|
||||
};
|
||||
use helix_core::commands::{self, Command};
|
||||
use std::collections::HashMap;
|
||||
|
||||
// Kakoune-inspired:
|
||||
|
@ -1,6 +1,8 @@
|
||||
#![allow(unused)]
|
||||
#[macro_use]
|
||||
mod macros;
|
||||
|
||||
mod commands;
|
||||
mod editor;
|
||||
mod keymap;
|
||||
mod theme;
|
||||
|
Loading…
Reference in New Issue
Block a user