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/*
* meli - bin.rs
*
* Copyright 2017-2018 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli 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.
*
* meli 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 meli. If not, see <http://www.gnu.org/licenses/>.
*/
/*! This crate contains the frontend stuff of the application. The application entry way on `src/bin.rs` creates an event loop and passes input to the `ui` module.
The mail handling stuff is done in the `melib` crate which includes all backend needs. The split is done to theoretically be able to create different frontends with the same innards.
*/
use std::alloc::System;
#[global_allocator]
static GLOBAL: System = System;
use ui;
pub use melib::*;
pub use ui::*;
#[macro_use]
extern crate chan;
use chan_signal;
use chan_signal::Signal;
use nix;
fn main() {
/* Lock all stdio outs */
//let _stdout = stdout();
//let mut _stdout = _stdout.lock();
/*
let _stderr = stderr();
let mut _stderr = _stderr.lock();
*/
/* Catch SIGWINCH to handle terminal resizing */
let signal = chan_signal::notify(&[Signal::WINCH]);
/* Create the application State. This is the 'System' part of an ECS architecture */
let mut state = State::new();
let receiver = state.receiver();
let worker_receiver = state.worker_receiver();
/* Register some reasonably useful interfaces */
let window = Box::new(Tabbed::new(vec![
Box::new(listing::Listing::new(&state.context.accounts)),
Box::new(AccountsPanel::new(&state.context)),
Box::new(ContactList::default()),
]));
let status_bar = Box::new(StatusBar::new(window));
state.register_component(status_bar);
let xdg_notifications = Box::new(ui::components::notifications::XDGNotifications {});
state.register_component(xdg_notifications);
state.register_component(Box::new(
ui::components::notifications::NotificationFilter {},
));
/* Keep track of the input mode. See ui::UIMode for details */
'main: loop {
state.render();
'inner: loop {
/* Check if any components have sent reply events to State. */
let events: Vec<UIEvent> = state.context.replies();
for e in events {
state.rcv_event(e);
}
state.redraw();
/* Poll on all channels. Currently we have the input channel for stdin, watching events and the signal watcher. */
chan_select! {
receiver.recv() -> r => {
match debug!(r.unwrap()) {
ThreadEvent::Input(Key::Ctrl('z')) => {
state.switch_to_main_screen();
//_thread_handler.join().expect("Couldn't join on the associated thread");
let self_pid = nix::unistd::Pid::this();
nix::sys::signal::kill(self_pid, nix::sys::signal::Signal::SIGSTOP).unwrap();
state.switch_to_alternate_screen();
state.restore_input();
// BUG: thread sends input event after one received key
state.update_size();
state.render();
state.redraw();
},
ThreadEvent::Input(k) => {
match state.mode {
UIMode::Normal => {
match k {
Key::Char('q') | Key::Char('Q') => {
drop(state);
break 'main;
},
Key::Char(' ') => {
state.mode = UIMode::Execute;
state.rcv_event(UIEvent::ChangeMode(UIMode::Execute));
state.redraw();
}
key => {
state.rcv_event(UIEvent::Input(key));
state.redraw();
},
}
},
UIMode::Insert => {
match k {
Key::Char('\n') | Key::Esc => {
state.mode = UIMode::Normal;
state.rcv_event(UIEvent::ChangeMode(UIMode::Normal));
state.redraw();
},
k => {
state.rcv_event(UIEvent::InsertInput(k));
state.redraw();
},
}
}
UIMode::Execute => {
match k {
Key::Char('\n') | Key::Esc => {
state.mode = UIMode::Normal;
state.rcv_event(UIEvent::ChangeMode(UIMode::Normal));
state.redraw();
},
k => {
state.rcv_event(UIEvent::ExInput(k));
state.redraw();
},
}
},
UIMode::Fork => {
break 'inner; // `goto` 'reap loop, and wait on child.
},
}
},
ThreadEvent::RefreshMailbox(event) => {
state.refresh_event(*event);
state.redraw();
},
ThreadEvent::UIEvent(UIEvent::ChangeMode(f)) => {
state.mode = f;
if f == UIMode::Fork {
break 'inner; // `goto` 'reap loop, and wait on child.
}
}
ThreadEvent::UIEvent(e) => {
state.rcv_event(e);
state.render();
},
ThreadEvent::ThreadJoin(id) => {
state.join(id);
},
}
},
signal.recv() -> signal => {
if state.mode != UIMode::Fork {
if let Some(Signal::WINCH) = signal {
state.update_size();
state.render();
state.redraw();
}
}
},
worker_receiver.recv() -> _ => {
/* Some worker thread finished their job, acknowledge
* it and move on*/
},
}
} // end of 'inner
'reap: loop {
match state.try_wait_on_child() {
Some(true) => {
state.restore_input();
state.switch_to_alternate_screen();
}
Some(false) => {
use std::{thread, time};
let ten_millis = time::Duration::from_millis(1500);
thread::sleep(ten_millis);
continue 'reap;
}
None => {
state.mode = UIMode::Normal;
state.render();
break 'reap;
}
}
}
}
}
|
