275 lines
8.7 KiB
Rust
275 lines
8.7 KiB
Rust
//! ## Log
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//!
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//! log tab component
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/**
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* MIT License
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*
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* termscp - Copyright (c) 2021 Christian Visintin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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use super::{Msg, UiMsg};
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use tuirealm::command::{Cmd, CmdResult, Direction, Position};
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use tuirealm::event::{Key, KeyEvent};
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use tuirealm::props::{Alignment, AttrValue, Attribute, Borders, Color, Style, Table};
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use tuirealm::tui::layout::Corner;
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use tuirealm::tui::widgets::{List as TuiList, ListItem, ListState};
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use tuirealm::{Component, Event, MockComponent, NoUserEvent, Props, State, StateValue};
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pub struct Log {
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props: Props,
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states: OwnStates,
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}
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impl Log {
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pub fn new(lines: Table, fg: Color, bg: Color) -> Self {
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let mut props = Props::default();
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props.set(Attribute::Foreground, AttrValue::Color(fg));
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props.set(Attribute::Background, AttrValue::Color(bg));
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props.set(Attribute::Content, AttrValue::Table(lines));
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Self {
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props,
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states: OwnStates::default(),
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}
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}
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}
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impl MockComponent for Log {
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fn view(&mut self, frame: &mut tuirealm::Frame, area: tuirealm::tui::layout::Rect) {
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let width: usize = area.width as usize - 4;
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let focus = self
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.props
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.get_or(Attribute::Focus, AttrValue::Flag(false))
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.unwrap_flag();
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let fg = self
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.props
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.get_or(Attribute::Foreground, AttrValue::Color(Color::Reset))
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.unwrap_color();
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let bg = self
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.props
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.get_or(Attribute::Background, AttrValue::Color(Color::Reset))
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.unwrap_color();
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// Make list
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let list_items: Vec<ListItem> = self
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.props
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.get(Attribute::Content)
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.unwrap()
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.unwrap_table()
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.iter()
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.map(|row| ListItem::new(tui_realm_stdlib::utils::wrap_spans(row, width, &self.props)))
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.collect();
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let w = TuiList::new(list_items)
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.block(tui_realm_stdlib::utils::get_block(
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Borders::default().color(fg),
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Some(("Log".to_string(), Alignment::Left)),
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focus,
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None,
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))
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.start_corner(Corner::BottomLeft)
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.highlight_symbol(">> ")
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.style(Style::default().bg(bg))
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.highlight_style(Style::default());
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let mut state: ListState = ListState::default();
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state.select(Some(self.states.list_index));
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frame.render_stateful_widget(w, area, &mut state);
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}
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fn query(&self, attr: Attribute) -> Option<AttrValue> {
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self.props.query(attr)
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}
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fn attr(&mut self, attr: Attribute, value: AttrValue) {
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self.props.set(attr, value);
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}
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fn state(&self) -> State {
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State::One(StateValue::Usize(self.states.list_index))
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}
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fn perform(&mut self, cmd: Cmd) -> CmdResult {
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match cmd {
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Cmd::Move(Direction::Down) => {
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let prev = self.states.list_index;
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self.states.incr_list_index();
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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Cmd::Move(Direction::Up) => {
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let prev = self.states.list_index;
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self.states.decr_list_index();
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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Cmd::Scroll(Direction::Down) => {
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let prev = self.states.list_index;
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(0..8).for_each(|_| self.states.incr_list_index());
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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Cmd::Scroll(Direction::Up) => {
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let prev = self.states.list_index;
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(0..8).for_each(|_| self.states.decr_list_index());
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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Cmd::GoTo(Position::Begin) => {
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let prev = self.states.list_index;
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self.states.list_index_at_first();
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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Cmd::GoTo(Position::End) => {
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let prev = self.states.list_index;
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self.states.list_index_at_last();
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if prev != self.states.list_index {
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CmdResult::Changed(self.state())
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} else {
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CmdResult::None
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}
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}
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_ => CmdResult::None,
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}
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}
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}
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impl Component<Msg, NoUserEvent> for Log {
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fn on(&mut self, ev: Event<NoUserEvent>) -> Option<Msg> {
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match ev {
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Event::Keyboard(KeyEvent {
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code: Key::Down, ..
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}) => {
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self.perform(Cmd::Move(Direction::Down));
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Some(Msg::None)
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}
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Event::Keyboard(KeyEvent { code: Key::Up, .. }) => {
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self.perform(Cmd::Move(Direction::Up));
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Some(Msg::None)
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}
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Event::Keyboard(KeyEvent {
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code: Key::PageDown,
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..
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}) => {
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self.perform(Cmd::Scroll(Direction::Down));
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Some(Msg::None)
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}
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Event::Keyboard(KeyEvent {
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code: Key::PageUp, ..
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}) => {
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self.perform(Cmd::Scroll(Direction::Up));
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Some(Msg::None)
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}
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Event::Keyboard(KeyEvent {
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code: Key::Home, ..
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}) => {
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self.perform(Cmd::GoTo(Position::Begin));
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Some(Msg::None)
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}
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Event::Keyboard(KeyEvent { code: Key::End, .. }) => {
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self.perform(Cmd::GoTo(Position::End));
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Some(Msg::None)
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}
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// -- comp msg
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Event::Keyboard(KeyEvent { code: Key::Tab, .. }) => Some(Msg::Ui(UiMsg::LogTabbed)),
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_ => None,
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}
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}
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}
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// -- states
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/// ## OwnStates
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///
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/// OwnStates contains states for this component
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#[derive(Clone)]
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struct OwnStates {
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list_index: usize, // Index of selected element in list
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list_len: usize, // Length of file list
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focus: bool, // Has focus?
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}
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impl Default for OwnStates {
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fn default() -> Self {
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OwnStates {
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list_index: 0,
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list_len: 0,
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focus: false,
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}
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}
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}
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impl OwnStates {
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/// ### set_list_len
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///
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/// Set list length
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pub fn set_list_len(&mut self, len: usize) {
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self.list_len = len;
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}
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/// ### get_list_index
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///
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/// Return current value for list index
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pub fn get_list_index(&self) -> usize {
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self.list_index
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}
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/// ### incr_list_index
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///
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/// Incremenet list index
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pub fn incr_list_index(&mut self) {
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// Check if index is at last element
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if self.list_index + 1 < self.list_len {
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self.list_index += 1;
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}
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}
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/// ### decr_list_index
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///
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/// Decrement list index
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pub fn decr_list_index(&mut self) {
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// Check if index is bigger than 0
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if self.list_index > 0 {
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self.list_index -= 1;
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}
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}
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/// ### reset_list_index
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///
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/// Reset list index to last element
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pub fn reset_list_index(&mut self) {
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self.list_index = 0; // Last element is always 0
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}
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}
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