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-rw-r--r--helix-term/src/commands.rs36
-rw-r--r--helix-term/src/keymap.rs2
2 files changed, 37 insertions, 1 deletions
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index bf12b122..5c26a5b2 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -362,6 +362,7 @@ impl MappableCommand {
rotate_selection_contents_forward, "Rotate selection contents forward",
rotate_selection_contents_backward, "Rotate selections contents backward",
expand_selection, "Expand selection to parent syntax node",
+ shrink_selection, "Shrink selection to previously expanded syntax node",
jump_forward, "Jump forward on jumplist",
jump_backward, "Jump backward on jumplist",
save_selection, "Save the current selection to the jumplist",
@@ -5467,6 +5468,7 @@ fn rotate_selection_contents(cx: &mut Context, direction: Direction) {
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
+
fn rotate_selection_contents_forward(cx: &mut Context) {
rotate_selection_contents(cx, Direction::Forward)
}
@@ -5482,7 +5484,39 @@ fn expand_selection(cx: &mut Context) {
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
- let selection = object::expand_selection(syntax, text, doc.selection(view.id));
+
+ let current_selection = doc.selection(view.id);
+
+ // save current selection so it can be restored using shrink_selection
+ view.object_selections.push(current_selection.clone());
+
+ let selection = object::expand_selection(syntax, text, current_selection);
+ doc.set_selection(view.id, selection);
+ }
+ };
+ motion(cx.editor);
+ cx.editor.last_motion = Some(Motion(Box::new(motion)));
+}
+
+fn shrink_selection(cx: &mut Context) {
+ let motion = |editor: &mut Editor| {
+ let (view, doc) = current!(editor);
+ 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) {
+ // allow shrinking the selection only if current selection contains the previous object selection
+ doc.set_selection(view.id, prev_selection);
+ return;
+ } else {
+ // clear existing selection as they can't be shrinked 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);
doc.set_selection(view.id, selection);
}
};
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs
index 72833212..49f8469a 100644
--- a/helix-term/src/keymap.rs
+++ b/helix-term/src/keymap.rs
@@ -569,11 +569,13 @@ impl Default for Keymaps {
"d" => goto_prev_diag,
"D" => goto_first_diag,
"space" => add_newline_above,
+ "o" => shrink_selection,
},
"]" => { "Right bracket"
"d" => goto_next_diag,
"D" => goto_last_diag,
"space" => add_newline_below,
+ "o" => expand_selection,
},
"/" => search,