Can promote/demote todo list items

todo/list.go

@@ -13,6 +13,16 @@ func (list *List) Delete() {
 	list.Items = append(list.Items[:list.selected], list.Items[list.selected+1:]...)
 }
 
+func (list *List) Demote() {
+	j := list.selected + 1
+	if j >= len(list.Items) {
+		j = 0
+	}
+
+	list.Swap(list.selected, j)
+	list.selected = j
+}
+
 func (list *List) Next() {
 	list.selected = list.selected + 1
 	if list.selected >= len(list.Items) {
@@ -27,6 +37,16 @@ func (list *List) Prev() {
 	}
 }
 
+func (list *List) Promote() {
+	j := list.selected - 1
+	if j < 0 {
+		j = len(list.Items) - 1
+	}
+
+	list.Swap(list.selected, j)
+	list.selected = j
+}
+
 // Toggle switches the checked state of the selected item
 func (list *List) Toggle() {
 	list.Items[list.selected].Toggle()

todo/widget.go

@@ -73,19 +73,31 @@ func (widget *Widget) keyboardIntercept(event *tcell.EventKey) *tcell.EventKey {
 	}
 
 	switch event.Key() {
+	case tcell.KeyCtrlA:
+		// Move the selected item up
+		widget.list.Promote()
+		widget.persist()
+		widget.display()
+		return nil
 	case tcell.KeyCtrlD:
-		// Delete selected item
+		// Delete the selected item
 		widget.list.Delete()
 		widget.persist()
 		widget.display()
 		return nil
+	case tcell.KeyCtrlZ:
+		// Move the selected item down
+		widget.list.Demote()
+		widget.persist()
+		widget.display()
+		return nil
 	case tcell.KeyDown:
 		// Select the next item down
 		widget.list.Next()
 		widget.display()
 		return nil
 	case tcell.KeyEsc:
-		// Unselect the current row (pass it on)
+		// Unselect the current row
 		widget.list.Unselect()
 		widget.display()
 		return event