Picker: Don't panick at move_up/move_down when matches is empty (#818)

pull/826/head
Leoi Hung Kin 3 years ago committed by GitHub
parent eedcea7e6b
commit a6852fb88f
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@ -270,12 +270,18 @@ impl<T> Picker<T> {
} }
pub fn move_up(&mut self) { pub fn move_up(&mut self) {
if self.matches.is_empty() {
return;
}
let len = self.matches.len(); let len = self.matches.len();
let pos = ((self.cursor + len.saturating_sub(1)) % len) % len; let pos = ((self.cursor + len.saturating_sub(1)) % len) % len;
self.cursor = pos; self.cursor = pos;
} }
pub fn move_down(&mut self) { pub fn move_down(&mut self) {
if self.matches.is_empty() {
return;
}
let len = self.matches.len(); let len = self.matches.len();
let pos = (self.cursor + 1) % len; let pos = (self.cursor + 1) % len;
self.cursor = pos; self.cursor = pos;

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