flip selections

src/action.rs

@@ -47,6 +47,7 @@ pub enum Action {
 	ExtendPreviousWordStart,
 	
 	CollapseSelection,
+	FlipSelections,
 	
 	ExtendLineBelow,
 	ExtendLineAbove,
@@ -126,6 +127,7 @@ impl Buffer {
 			Action::ExtendPreviousWordStart => self.extend_previous_word_start(window_size),
 			
 			Action::CollapseSelection => self.collapse_selection(),
+			Action::FlipSelections => self.flip_selection(),
 			
 			Action::ExtendLineBelow => self.extend_line_below(window_size),
 			Action::ExtendLineAbove => self.extend_line_above(window_size),
@@ -391,6 +393,14 @@ impl Buffer {
 		}
 	}
 	
+	fn flip_selection(&mut self) {
+		self.primary_cursor.flip();
+		
+		for cursor in &mut self.cursors {
+			cursor.flip();
+		}
+	}
+	
 	fn extend_line_below(&mut self, window_size: WindowSize) {
 		let max_contents_index = self.max_contents_index();
 		self.change_all_cursors(|cursor| cursor.extend_line_below(max_contents_index));
@@ -495,6 +505,8 @@ impl Buffer {
 		self.cursors.sort_by_key(|cursor| cursor.head);
 		
 		self.combine_cursors_if_overlapping();
+		
+		self.rotate_selections_forward();
 	}
 	
 	fn rotate_selections_backward(&mut self) {

src/config.rs

@@ -130,6 +130,7 @@ impl Default for Config {
 					("b".try_into().unwrap(), Action::MovePreviousWordStart),
 					
 					(";".try_into().unwrap(), Action::CollapseSelection),
+					("A-;".try_into().unwrap(), Action::FlipSelections),
 					
 					("x".try_into().unwrap(), Action::ExtendLineBelow),
 					("X".try_into().unwrap(), Action::ExtendLineAbove),
@@ -191,6 +192,7 @@ impl Default for Config {
 					("b".try_into().unwrap(), Action::ExtendPreviousWordStart),
 					
 					(";".try_into().unwrap(), Action::CollapseSelection),
+					("A-;".try_into().unwrap(), Action::FlipSelections),
 					
 					("x".try_into().unwrap(), Action::ExtendLineBelow),
 					("X".try_into().unwrap(), Action::ExtendLineAbove),

src/cursor.rs

@@ -51,6 +51,10 @@ impl Cursor {
 		self.tail = self.head;
 	}
 	
+	pub const fn flip(&mut self) {
+		swap(&mut self.head, &mut self.tail);
+	}
+	
 	// TODO: in visual mode, should only clamp head
 	pub fn clamp(&mut self, scroll_position: usize, screen_size: usize) {
 		let max_row = scroll_position + screen_size - 1;