Add 'o' command.

pull/1/head
Blaž Hrastnik 4 years ago
parent eb6b9a9ca9
commit fb0f56b747

@ -1,5 +1,5 @@
use crate::graphemes; use crate::graphemes;
use crate::selection::Range; use crate::selection::{Range, Selection};
use crate::state::{Direction, Granularity, Mode, State}; use crate::state::{Direction, Granularity, Mode, State};
use crate::transaction::{ChangeSet, Transaction}; use crate::transaction::{ChangeSet, Transaction};
use crate::Tendril; use crate::Tendril;
@ -62,8 +62,55 @@ pub fn append_mode(state: &mut State, _count: usize) {
// I inserts at the start of each line with a selection // I inserts at the start of each line with a selection
// A inserts at the end of each line with a selection // A inserts at the end of each line with a selection
// o inserts a new line before each line with a selection
// O inserts a new line after each line with a selection // o inserts a new line after each line with a selection
pub fn open_below(state: &mut State, _count: usize) {
state.mode = Mode::Insert;
// calculate line numbers for each selection range
let mut lines = state
.selection
.ranges()
.iter()
.map(|range| state.doc.char_to_line(range.head))
.collect::<Vec<_>>();
lines.sort();
lines.dedup();
let positions: Vec<_> = lines
.into_iter()
.map(|index| {
// adjust all positions to the end of the line.
let line = state.doc.line(index);
let line_start = 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(state, changes.collect()).with_selection(selection);
transaction.apply(state);
// TODO: need to store into history if successful
}
// O inserts a new line before each line with a selection
pub fn normal_mode(state: &mut State, _count: usize) { pub fn normal_mode(state: &mut State, _count: usize) {
// TODO: if leaving append mode, move cursor back by 1 // TODO: if leaving append mode, move cursor back by 1

@ -339,6 +339,11 @@ impl Transaction {
true true
} }
pub fn with_selection(mut self, selection: Selection) -> Self {
self.selection = Some(selection);
self
}
/// Generate a transaction from a set of changes. /// Generate a transaction from a set of changes.
// TODO: take an owned iter instead of Vec // TODO: take an owned iter instead of Vec
pub fn change(state: &State, changes: Vec<Change>) -> Self { pub fn change(state: &State, changes: Vec<Change>) -> Self {

@ -107,6 +107,10 @@ pub fn default() -> Keymap {
code: KeyCode::Char('a'), code: KeyCode::Char('a'),
modifiers: Modifiers::NONE modifiers: Modifiers::NONE
} => commands::append_mode as Command, } => commands::append_mode as Command,
Key {
code: KeyCode::Char('o'),
modifiers: Modifiers::NONE
} => commands::open_below as Command,
Key { Key {
code: KeyCode::Esc, code: KeyCode::Esc,
modifiers: Modifiers::NONE modifiers: Modifiers::NONE

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