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Keep index in file_list if possible

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This commit is contained in:
veeso 2021-03-21 12:06:42 +01:00
parent 16a8fc3ad8
commit 7caa4575bd
1 changed files with 13 additions and 11 deletions
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24
src/ui/layout/components/file_list.rs
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@ -91,11 +91,13 @@ impl OwnStates {
}
}
/// ### reset_list_index
/// ### fix_list_index
///
/// Reset list index to 0
pub fn reset_list_index(&mut self) {
self.list_index = 0;
/// Keep index if possible, otherwise set to lenght - 1
pub fn fix_list_index(&mut self) {
if self.list_index >= self.list_len {
self.list_index = self.list_len - 1;
}
}
}
@ -189,8 +191,8 @@ impl Component for FileList {
Some(tokens) => tokens.len(),
None => 0,
});
// Reset list index
self.states.reset_list_index();
// Fix list index
self.states.fix_list_index();
Msg::None
}
@ -319,26 +321,26 @@ mod tests {
.build(),
);
// Verify states
assert_eq!(component.states.list_index, 0);
assert_eq!(component.states.list_index, 1); // Kept
assert_eq!(component.states.list_len, 3);
// get value
assert_eq!(component.get_value(), Payload::Unsigned(0));
assert_eq!(component.get_value(), Payload::Unsigned(1));
// Render
assert_eq!(component.states.list_index, 0);
assert_eq!(component.states.list_index, 1);
// Handle inputs
assert_eq!(
component.on(InputEvent::Key(KeyEvent::from(KeyCode::Down))),
Msg::None
);
// Index should be incremented
assert_eq!(component.states.list_index, 1);
assert_eq!(component.states.list_index, 2);
// Index should be decremented
assert_eq!(
component.on(InputEvent::Key(KeyEvent::from(KeyCode::Up))),
Msg::None
);
// Index should be incremented
assert_eq!(component.states.list_index, 0);
assert_eq!(component.states.list_index, 1);
// Index should be 2
assert_eq!(
component.on(InputEvent::Key(KeyEvent::from(KeyCode::PageDown))),