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Table paging release (#3128)

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* use the InputHandler functionality from minus

* respond to Q and ESC character to quit

* use arijit79/minus main branch until new release is pushed

* rename NushellMinusInputHandler to MinusInputHandler
This commit is contained in:
rezural
2021-03-05 08:32:16 +11:00
committed by GitHub
parent 507de45d40
commit c91a1ec08d
2 changed files with 120 additions and 2 deletions
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117
crates/nu-command/src/commands/table/command.rs
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@ -198,6 +198,7 @@ async fn table(
.set_exit_strategy(ExitStrategy::PagerQuit)
.set_searchable(true)
.set_page_if_havent_overflowed(false)
.set_input_handler(Box::new(input_handling::MinusInputHandler {}))
.finish();
let stream_data = async {
@ -309,6 +310,122 @@ async fn table(
Ok(OutputStream::empty())
}
#[cfg(feature = "table-pager")]
mod input_handling {
use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers, MouseEvent, MouseEventKind};
use minus::{InputEvent, InputHandler, LineNumbers, SearchMode};
pub struct MinusInputHandler;
impl InputHandler for MinusInputHandler {
fn handle_input(
&self,
ev: Event,
upper_mark: usize,
search_mode: SearchMode,
ln: LineNumbers,
rows: usize,
) -> Option<InputEvent> {
match ev {
// Scroll up by one.
Event::Key(KeyEvent {
code: KeyCode::Up,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(upper_mark.saturating_sub(1))),
// Scroll down by one.
Event::Key(KeyEvent {
code: KeyCode::Down,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(upper_mark.saturating_add(1))),
// Mouse scroll up/down
Event::Mouse(MouseEvent {
kind: MouseEventKind::ScrollUp,
..
}) => Some(InputEvent::UpdateUpperMark(upper_mark.saturating_sub(5))),
Event::Mouse(MouseEvent {
kind: MouseEventKind::ScrollDown,
..
}) => Some(InputEvent::UpdateUpperMark(upper_mark.saturating_add(5))),
// Go to top.
Event::Key(KeyEvent {
code: KeyCode::Home,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(0)),
// Go to bottom.
Event::Key(KeyEvent {
code: KeyCode::End,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(usize::MAX)),
// Page Up/Down
Event::Key(KeyEvent {
code: KeyCode::PageUp,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(
upper_mark.saturating_sub(rows - 1),
)),
Event::Key(KeyEvent {
code: KeyCode::PageDown,
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::UpdateUpperMark(
upper_mark.saturating_add(rows - 1),
)),
// Resize event from the terminal.
Event::Resize(_, height) => Some(InputEvent::UpdateRows(height as usize)),
// Switch line number display.
Event::Key(KeyEvent {
code: KeyCode::Char('l'),
modifiers: KeyModifiers::CONTROL,
}) => Some(InputEvent::UpdateLineNumber(!ln)),
// Quit.
Event::Key(KeyEvent {
code: KeyCode::Char('q'),
modifiers: KeyModifiers::NONE,
})
| Event::Key(KeyEvent {
code: KeyCode::Char('Q'),
modifiers: KeyModifiers::SHIFT,
})
| Event::Key(KeyEvent {
code: KeyCode::Esc,
modifiers: KeyModifiers::NONE,
})
| Event::Key(KeyEvent {
code: KeyCode::Char('c'),
modifiers: KeyModifiers::CONTROL,
}) => Some(InputEvent::Exit),
Event::Key(KeyEvent {
code: KeyCode::Char('/'),
modifiers: KeyModifiers::NONE,
}) => Some(InputEvent::Search(SearchMode::Unknown)),
Event::Key(KeyEvent {
code: KeyCode::Down,
modifiers: KeyModifiers::CONTROL,
}) => {
if search_mode == SearchMode::Unknown {
Some(InputEvent::NextMatch)
} else {
None
}
}
Event::Key(KeyEvent {
code: KeyCode::Up,
modifiers: KeyModifiers::CONTROL,
}) => {
if search_mode == SearchMode::Unknown {
Some(InputEvent::PrevMatch)
} else {
None
}
}
_ => None,
}
}
}
}
#[cfg(test)]
mod tests {
use super::Command;