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feat: allow reverse repeat for expand / shrink selection

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This commit is contained in:
Will Bush 2025-02-21 21:53:05 -06:00
parent c29f1ee1ad
commit 46465f1440
1 changed files with 49 additions and 33 deletions
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82
helix-term/src/commands.rs
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@ -5311,49 +5311,65 @@ fn reverse_selection_contents(cx: &mut Context) {
// tree sitter node selection
fn expand_selection(cx: &mut Context) {
let motion = |editor: &mut Editor, _mode: MotionMode, _move_override: Option<Movement>| {
let (view, doc) = current!(editor);
selection_motion(cx, Direction::Forward);
}
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
fn shrink_selection(cx: &mut Context) {
selection_motion(cx, Direction::Backward);
}
let current_selection = doc.selection(view.id);
let selection = object::expand_selection(syntax, text, current_selection.clone());
// check if selection is different from the last one
if *current_selection != selection {
// save current selection so it can be restored using shrink_selection
view.object_selections.push(current_selection.clone());
doc.set_selection(view.id, selection);
}
fn selection_motion(cx: &mut Context, direction: Direction) {
let motion = move |editor: &mut Editor, mode: MotionMode, _move_override: Option<Movement>| {
let direction = match mode {
MotionMode::Normal => direction,
MotionMode::Reverse => direction.reverse(),
};
match direction {
Direction::Forward => expand_selection_impl(editor),
Direction::Backward => shrink_selection_impl(editor),
}
};
cx.editor.apply_motion(motion);
}
fn shrink_selection(cx: &mut Context) {
let motion = |editor: &mut Editor, _mode: MotionMode, _move_override: Option<Movement>| {
let (view, doc) = current!(editor);
fn expand_selection_impl(editor: &mut Editor) {
let (view, doc) = current!(editor);
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
let current_selection = doc.selection(view.id);
// try to restore previous selection
if let Some(prev_selection) = view.object_selections.pop() {
if current_selection.contains(&prev_selection) {
doc.set_selection(view.id, prev_selection);
return;
} else {
// clear existing selection as they can't be shrunk to anyway
view.object_selections.clear();
}
}
// if not previous selection, shrink to first child
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
let selection = object::shrink_selection(syntax, text, current_selection.clone());
let selection = object::expand_selection(syntax, text, current_selection.clone());
// check if selection is different from the last one
if *current_selection != selection {
// save current selection so it can be restored using shrink_selection
view.object_selections.push(current_selection.clone());
doc.set_selection(view.id, selection);
}
};
cx.editor.apply_motion(motion);
}
}
fn shrink_selection_impl(editor: &mut Editor) {
let (view, doc) = current!(editor);
let current_selection = doc.selection(view.id);
if let Some(prev_selection) = view.object_selections.pop() {
if current_selection.contains(&prev_selection) {
doc.set_selection(view.id, prev_selection);
return;
} else {
// clear existing selection as they can't be shrunk to anyway
view.object_selections.clear();
}
}
// try to restore previous selection
// if not previous selection, shrink to first child
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
let selection = object::shrink_selection(syntax, text, current_selection.clone());
doc.set_selection(view.id, selection);
}
}
fn select_sibling_impl(cx: &mut Context, direction: Direction) {