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-rw-r--r--helix-term/src/commands.rs216
1 files changed, 0 insertions, 216 deletions
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
deleted file mode 100644
index 269a7743..00000000
--- a/helix-term/src/commands.rs
+++ /dev/null
@@ -1,216 +0,0 @@
-use helix_core::{
- graphemes,
- state::{Direction, Granularity, Mode, State},
- ChangeSet, Range, Selection, Tendril, Transaction,
-};
-
-use crate::editor::View;
-
-/// 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).
-pub type Command = fn(view: &mut View, count: usize);
-
-pub fn move_char_left(view: &mut View, count: usize) {
- // TODO: use a transaction
- let selection = view
- .state
- .move_selection(Direction::Backward, Granularity::Character, count);
- view.state.selection = selection;
-}
-
-pub fn move_char_right(view: &mut View, count: usize) {
- // TODO: use a transaction
- view.state.selection =
- view.state
- .move_selection(Direction::Forward, Granularity::Character, count);
-}
-
-pub fn move_line_up(view: &mut View, count: usize) {
- // TODO: use a transaction
- view.state.selection = view
- .state
- .move_selection(Direction::Backward, Granularity::Line, count);
-}
-
-pub fn move_line_down(view: &mut View, count: usize) {
- // TODO: use a transaction
- view.state.selection = view
- .state
- .move_selection(Direction::Forward, Granularity::Line, count);
-}
-
-// avoid select by default by having a visual mode switch that makes movements into selects
-
-// insert mode:
-// first we calculate the correct cursors/selections
-// then we just append at each cursor
-// lastly, if it was append mode we shift cursor by 1?
-
-// inserts at the start of each selection
-pub fn insert_mode(view: &mut View, _count: usize) {
- view.state.mode = Mode::Insert;
-
- view.state.selection = view
- .state
- .selection
- .transform(|range| Range::new(range.to(), range.from()))
-}
-
-// inserts at the end of each selection
-pub fn append_mode(view: &mut View, _count: usize) {
- view.state.mode = Mode::Insert;
-
- // TODO: as transaction
- let text = &view.state.doc.slice(..);
- view.state.selection = view.state.selection.transform(|range| {
- // TODO: to() + next char
- Range::new(
- range.from(),
- graphemes::next_grapheme_boundary(text, range.to()),
- )
- })
-}
-
-// TODO: I, A, o and O can share a lot of the primitives.
-
-// calculate line numbers for each selection range
-fn selection_lines(state: &State) -> Vec<usize> {
- let mut lines = state
- .selection
- .ranges()
- .iter()
- .map(|range| state.doc.char_to_line(range.head))
- .collect::<Vec<_>>();
-
- lines.sort();
- lines.dedup();
-
- lines
-}
-
-// I inserts at the start of each line with a selection
-pub fn prepend_to_line(view: &mut View, _count: usize) {
- view.state.mode = Mode::Insert;
-
- let lines = selection_lines(&view.state);
-
- let positions = lines
- .into_iter()
- .map(|index| {
- // adjust all positions to the start of the line.
- view.state.doc.line_to_char(index)
- })
- .map(|pos| Range::new(pos, pos));
-
- let selection = Selection::new(positions.collect(), 0);
-
- let transaction = Transaction::new(&mut view.state).with_selection(selection);
-
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}
-
-// A inserts at the end of each line with a selection
-pub fn append_to_line(view: &mut View, _count: usize) {
- view.state.mode = Mode::Insert;
-
- let lines = selection_lines(&view.state);
-
- let positions = lines
- .into_iter()
- .map(|index| {
- // adjust all positions to the end of the line.
- let line = view.state.doc.line(index);
- let line_start = view.state.doc.line_to_char(index);
- line_start + line.len_chars() - 1
- })
- .map(|pos| Range::new(pos, pos));
-
- let selection = Selection::new(positions.collect(), 0);
-
- let transaction = Transaction::new(&mut view.state).with_selection(selection);
-
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}
-
-// o inserts a new line after each line with a selection
-pub fn open_below(view: &mut View, _count: usize) {
- view.state.mode = Mode::Insert;
-
- let lines = selection_lines(&view.state);
-
- let positions: Vec<_> = lines
- .into_iter()
- .map(|index| {
- // adjust all positions to the end of the line.
- let line = view.state.doc.line(index);
- let line_start = view.state.doc.line_to_char(index);
- line_start + line.len_chars()
- })
- .collect();
-
- let changes = positions.iter().copied().map(|index|
- // generate changes
- (index, index, Some(Tendril::from_char('\n'))));
-
- // TODO: count actually inserts "n" new lines and starts editing on all of them.
- // TODO: append "count" newlines and modify cursors to those lines
-
- let selection = Selection::new(
- positions
- .iter()
- .copied()
- .map(|pos| Range::new(pos, pos))
- .collect(),
- 0,
- );
-
- let transaction = Transaction::change(&view.state, changes).with_selection(selection);
-
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}
-
-// O inserts a new line before each line with a selection
-
-pub fn normal_mode(view: &mut View, _count: usize) {
- // TODO: if leaving append mode, move cursor back by 1
- view.state.mode = Mode::Normal;
-}
-
-// TODO: insert means add text just before cursor, on exit we should be on the last letter.
-pub fn insert_char(view: &mut View, c: char) {
- let c = Tendril::from_char(c);
- let transaction = Transaction::insert(&view.state, c);
-
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}
-
-// TODO: handle indent-aware delete
-pub fn delete_char_backward(view: &mut View, count: usize) {
- let text = &view.state.doc.slice(..);
- let transaction = Transaction::change_by_selection(&view.state, |range| {
- (
- graphemes::nth_prev_grapheme_boundary(text, range.head, count),
- range.head,
- None,
- )
- });
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}
-
-pub fn delete_char_forward(view: &mut View, count: usize) {
- let text = &view.state.doc.slice(..);
- let transaction = Transaction::change_by_selection(&view.state, |range| {
- (
- graphemes::nth_next_grapheme_boundary(text, range.head, count),
- range.head,
- None,
- )
- });
- transaction.apply(&mut view.state);
- // TODO: need to store into history if successful
-}