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Move cursor one word left/right

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This commit is contained in:
Joscha 2022-08-07 00:25:53 +02:00
parent 51d03c6fe2
commit 9ebe2361a9
2 changed files with 48 additions and 0 deletions
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44
src/ui/widgets/editor.rs
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@ -237,6 +237,42 @@ impl InnerEditorState {
}
}
fn move_cursor_left_a_word(&mut self, frame: &mut Frame) {
let boundaries = self.grapheme_boundaries();
let mut encountered_word = false;
for (start, end) in boundaries.iter().zip(boundaries.iter().skip(1)).rev() {
if *end == self.idx {
let g = &self.text[*start..*end];
let whitespace = g.chars().all(|c| c.is_whitespace());
if encountered_word && whitespace {
break;
} else if !whitespace {
encountered_word = true;
}
self.idx = *start;
}
}
self.record_cursor_col(frame);
}
fn move_cursor_right_a_word(&mut self, frame: &mut Frame) {
let boundaries = self.grapheme_boundaries();
let mut encountered_word = false;
for (start, end) in boundaries.iter().zip(boundaries.iter().skip(1)) {
if *start == self.idx {
let g = &self.text[*start..*end];
let whitespace = g.chars().all(|c| c.is_whitespace());
if encountered_word && whitespace {
break;
} else if !whitespace {
encountered_word = true;
}
self.idx = *end;
}
}
self.record_cursor_col(frame);
}
fn move_cursor_to_start_of_line(&mut self, frame: &mut Frame) {
let boundaries = self.line_boundaries();
let (line, _, _) = self.cursor_line(&boundaries);
@ -329,6 +365,14 @@ impl EditorState {
self.0.lock().move_cursor_right(frame);
}
pub fn move_cursor_left_a_word(&self, frame: &mut Frame) {
self.0.lock().move_cursor_left_a_word(frame);
}
pub fn move_cursor_right_a_word(&self, frame: &mut Frame) {
self.0.lock().move_cursor_right_a_word(frame);
}
pub fn move_cursor_to_start_of_line(&self, frame: &mut Frame) {
self.0.lock().move_cursor_to_start_of_line(frame);
}