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// bibiman - a TUI for managing BibLaTeX databases
// Copyright (C) 2024 lukeflo
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/////
use crate::bibiman::{Bibiman, CurrentArea};
use crate::tui::Tui;
use crate::App;
use color_eyre::eyre::Result;
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
/// Handles the key events and updates the state of [`App`].
pub fn handle_key_events(key_event: KeyEvent, app: &mut App, tui: &mut Tui) -> Result<()> {
// Keycodes activated for every area (high priority)
match key_event.code {
// Exit application on `ESC` or `q`
KeyCode::Char('Q') | KeyCode::Char('q') => {
app.quit();
}
// Exit application on `Ctrl-C`
KeyCode::Char('c') | KeyCode::Char('C') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.quit();
}
}
KeyCode::PageDown => {
app.bibiman.scroll_info_down();
}
KeyCode::PageUp => {
app.bibiman.scroll_info_up();
}
_ => {}
}
// Keycodes for specific areas
match app.bibiman.current_area {
// Keycodes for the tag area
CurrentArea::TagArea => match key_event.code {
KeyCode::Down => {
app.bibiman.select_next_tag(1);
}
KeyCode::Up => {
app.bibiman.select_previous_tag(1);
}
KeyCode::Char('j') => {
if key_event.modifiers == KeyModifiers::ALT {
app.bibiman.scroll_info_down();
} else {
app.bibiman.select_next_tag(1);
}
}
KeyCode::Char('k') => {
if key_event.modifiers == KeyModifiers::ALT {
app.bibiman.scroll_info_up();
} else {
app.bibiman.select_previous_tag(1);
}
}
KeyCode::Char('d') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.select_next_tag(5)
}
}
KeyCode::Char('u') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.select_previous_tag(5)
}
}
KeyCode::Char('g') | KeyCode::Home => {
app.bibiman.select_first_tag();
}
KeyCode::Char('G') | KeyCode::End => {
app.bibiman.select_last_tag();
}
KeyCode::Char('/') => {
app.bibiman.enter_search_area();
}
KeyCode::Char('f') | KeyCode::Char('F') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.enter_search_area();
}
}
KeyCode::Tab | KeyCode::BackTab => {
app.bibiman.toggle_area();
}
KeyCode::Esc => {
app.bibiman.reset_current_list();
}
KeyCode::Enter => {
app.bibiman.filter_for_tags();
}
_ => {}
},
// Keycodes for the entry area
CurrentArea::EntryArea => match key_event.code {
KeyCode::Down => {
app.bibiman.select_next_entry(1);
}
KeyCode::Up => {
app.bibiman.select_previous_entry(1);
}
KeyCode::Char('j') => {
if key_event.modifiers == KeyModifiers::ALT {
app.bibiman.scroll_info_down();
} else {
app.bibiman.select_next_entry(1);
}
}
KeyCode::Char('k') => {
if key_event.modifiers == KeyModifiers::ALT {
app.bibiman.scroll_info_up();
} else {
app.bibiman.select_previous_entry(1);
}
}
KeyCode::Char('d') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.select_next_entry(5);
}
}
KeyCode::Char('u') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.select_previous_entry(5);
} else {
app.bibiman.open_doi_url()?;
}
}
KeyCode::Char('g') | KeyCode::Home => {
app.bibiman.select_first_entry();
}
KeyCode::Char('G') | KeyCode::End => {
app.bibiman.select_last_entry();
}
KeyCode::Char('h') => {
app.bibiman.select_prev_column();
}
KeyCode::Char('l') => {
app.bibiman.select_next_column();
}
KeyCode::Char('s') => {
app.bibiman.entry_table.sort_entry_table(true);
}
KeyCode::Char('y') => {
Bibiman::yank_text(&app.bibiman.get_selected_citekey());
}
KeyCode::Char('e') => {
app.bibiman.run_editor(tui)?;
}
KeyCode::Char('o') => {
app.bibiman.open_connected_file()?;
}
KeyCode::Char('/') => {
app.bibiman.enter_search_area();
}
KeyCode::Char('f') | KeyCode::Char('F') => {
if key_event.modifiers == KeyModifiers::CONTROL {
app.bibiman.enter_search_area();
}
}
KeyCode::Tab | KeyCode::BackTab => {
app.bibiman.toggle_area();
}
KeyCode::Esc => {
app.bibiman.reset_current_list();
}
_ => {}
},
// Keycodes for the search area (rendered in footer)
CurrentArea::SearchArea => match key_event.code {
KeyCode::Esc => {
app.bibiman.break_search();
}
KeyCode::Enter => {
app.bibiman.confirm_search();
}
KeyCode::Backspace => {
app.bibiman.search_pattern_pop();
}
KeyCode::Char(search_pattern) => {
app.bibiman.search_pattern_push(search_pattern);
}
_ => {}
},
// Keycodes for the help area (popup)
CurrentArea::HelpArea => match key_event.code {
KeyCode::Char('q') => {
app.quit();
}
KeyCode::Esc => {
app.bibiman.toggle_area();
app.bibiman.former_area = None;
}
_ => {}
},
CurrentArea::InfoArea => {}
}
Ok(())
}
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