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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 ratatui::crossterm::event::{
Event, KeyCode, KeyEvent, KeyModifiers, MouseEvent, MouseEventKind,
};
use tui_input::Input;
// Possible ressources to open
#[derive(Debug, PartialEq, Eq)]
pub enum OpenRessource {
Pdf,
WebLink,
Note,
}
/// Application command.
#[derive(Debug, PartialEq, Eq)]
pub enum CmdAction {
// Toggle area
ToggleArea,
// Scroll list/table down
SelectNextRow(u16),
// Scroll list/table up.
SelectPrevRow(u16),
// Select nex table col.
SelectNextCol,
// Select previous table col.
SelectPrevCol,
// Scroll info/preview area down
ScrollInfoDown,
// Scroll info/preview area up
ScrollInfoUp,
// Go to top.
Top,
// Go to bottom.
Bottom,
// Search list
SearchList,
// Reset lists
ResetList,
// Confirm search/selection
Confirm,
// Sort table/list
SortList,
// Yank selected item
YankItem,
// Edit file
EditFile,
// Open linked ressource
Open(OpenRessource),
// Input command.
Input(InputCmdAction),
// Hexdump command.
Exit,
// Do nothing.
Nothing,
}
impl From<KeyEvent> for CmdAction {
fn from(key_event: KeyEvent) -> Self {
match key_event.code {
// Go to first/last entry of selected list/table
KeyCode::Char('g') | KeyCode::Home => Self::Top,
KeyCode::Char('G') | KeyCode::End => Self::Bottom,
// Scroll columns of EntryTable
KeyCode::Right | KeyCode::Char('l') => Self::SelectNextCol,
KeyCode::Left | KeyCode::Char('h') => Self::SelectPrevCol,
// Scroll table/list vertically by 1
KeyCode::Down | KeyCode::Char('j') => {
if key_event.modifiers == KeyModifiers::ALT {
Self::ScrollInfoDown
} else {
Self::SelectNextRow(1)
}
}
KeyCode::Up | KeyCode::Char('k') => {
if key_event.modifiers == KeyModifiers::ALT {
Self::ScrollInfoUp
} else {
Self::SelectPrevRow(1)
}
}
// Scroll table/list vertically by 5
KeyCode::Char('d') => {
if key_event.modifiers == KeyModifiers::CONTROL {
Self::SelectNextRow(5)
} else {
Self::Nothing
}
}
KeyCode::Char('u') => {
if key_event.modifiers == KeyModifiers::CONTROL {
Self::SelectPrevRow(5)
} else {
Self::Open(OpenRessource::WebLink)
}
}
// Scroll info/preview area
KeyCode::PageDown => Self::ScrollInfoDown,
KeyCode::PageUp => Self::ScrollInfoUp,
// Exit App
KeyCode::Char('q') => Self::Exit,
KeyCode::Char('c') | KeyCode::Char('C') => {
if key_event.modifiers == KeyModifiers::CONTROL {
Self::Exit
} else {
Self::Nothing
}
}
// Switch selected area
KeyCode::Tab => Self::ToggleArea,
KeyCode::BackTab => Self::ToggleArea,
// Enter search mode
KeyCode::Char('/') => Self::Input(InputCmdAction::Enter),
KeyCode::Char('f') => {
if key_event.modifiers == KeyModifiers::CONTROL {
Self::Input(InputCmdAction::Enter)
} else {
Self::Nothing
}
}
// KeyCode::Backspace => Self::Input(InputCommand::Resume(Event::Key(key_event))),
// Confirm selection
KeyCode::Enter => Self::Confirm,
// Reset lists/tables
KeyCode::Esc => Self::ResetList,
// Open linked ressource
KeyCode::Char('o') => Self::Open(OpenRessource::Pdf),
// KeyCode::Char('u') => Self::Open(OpenRessource::WebLink),
// Edit currently selected entry
KeyCode::Char('e') => Self::EditFile,
// Yank selected item/value
KeyCode::Char('y') => Self::YankItem,
// Sort entry table by selected col
KeyCode::Char('s') => Self::SortList,
// Else do nothing
_ => Self::Nothing,
}
}
}
impl From<MouseEvent> for CmdAction {
fn from(mouse_event: MouseEvent) -> Self {
match mouse_event.kind {
MouseEventKind::ScrollDown => Self::SelectNextRow(1),
MouseEventKind::ScrollUp => Self::SelectPrevRow(1),
_ => Self::Nothing,
}
}
}
/// Input mode command.
#[derive(Debug, PartialEq, Eq)]
pub enum InputCmdAction {
// Handle input.
Handle(Event),
// Enter input mode.
Enter,
// Confirm input.
Confirm,
// Exit input mode
Exit,
// Do nothing
Nothing,
}
impl InputCmdAction {
/// Parses the event.
pub fn parse(key_event: KeyEvent, input: &Input) -> Self {
if key_event.code == KeyCode::Backspace && input.value().is_empty() {
Self::Nothing
} else if key_event.code == KeyCode::Esc {
Self::Exit
} else if key_event.code == KeyCode::Enter {
Self::Confirm
} else {
Self::Handle(Event::Key(key_event))
}
}
}
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