218 lines
8.6 KiB
Rust
218 lines
8.6 KiB
Rust
/*
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* meli - bin.rs
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*
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* Copyright 2017-2018 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*! 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.
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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.
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*/
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use std::alloc::System;
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#[global_allocator]
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static GLOBAL: System = System;
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use ui;
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pub use melib::*;
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pub use ui::*;
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#[macro_use]
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extern crate chan;
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use chan_signal;
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use chan_signal::Signal;
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use nix;
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fn main() {
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/* Lock all stdio outs */
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//let _stdout = stdout();
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//let mut _stdout = _stdout.lock();
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/*
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let _stderr = stderr();
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let mut _stderr = _stderr.lock();
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*/
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/* Catch SIGWINCH to handle terminal resizing */
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let signal = chan_signal::notify(&[Signal::WINCH]);
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/* Create the application State. This is the 'System' part of an ECS architecture */
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let mut state = State::new();
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let receiver = state.receiver();
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let worker_receiver = state.worker_receiver();
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/* Register some reasonably useful interfaces */
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let menu = Box::new(AccountMenu::new(&state.context.accounts));
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let listing = listing::Listing::from(IndexStyle::Compact);
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let b = Box::new(listing);
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let window = Box::new(Tabbed::new(vec![
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Box::new(VSplit::new(menu, b, 90, false)),
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Box::new(AccountsPanel::new(&state.context)),
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Box::new(ContactList::default()),
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]));
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let status_bar = Box::new(StatusBar::new(window));
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state.register_component(status_bar);
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let xdg_notifications = Box::new(ui::components::notifications::XDGNotifications {});
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state.register_component(xdg_notifications);
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state.register_component(Box::new(
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ui::components::notifications::NotificationFilter {},
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));
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/* Keep track of the input mode. See ui::UIMode for details */
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'main: loop {
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state.render();
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'inner: loop {
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/* Check if any components have sent reply events to State. */
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let events: Vec<UIEvent> = state.context.replies();
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for e in events {
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state.rcv_event(e);
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}
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state.redraw();
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/* Poll on all channels. Currently we have the input channel for stdin, watching events and the signal watcher. */
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chan_select! {
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receiver.recv() -> r => {
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match r.unwrap() {
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ThreadEvent::Input(Key::Ctrl('z')) => {
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state.switch_to_main_screen();
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//_thread_handler.join().expect("Couldn't join on the associated thread");
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let self_pid = nix::unistd::Pid::this();
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nix::sys::signal::kill(self_pid, nix::sys::signal::Signal::SIGSTOP).unwrap();
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state.switch_to_alternate_screen();
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state.restore_input();
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// BUG: thread sends input event after one received key
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state.update_size();
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state.render();
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state.redraw();
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},
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ThreadEvent::Input(k) => {
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match state.mode {
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UIMode::Normal => {
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match k {
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Key::Char('q') | Key::Char('Q') => {
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drop(state);
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break 'main;
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},
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Key::Char(' ') => {
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state.mode = UIMode::Execute;
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state.rcv_event(UIEvent::ChangeMode(UIMode::Execute));
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state.redraw();
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}
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key => {
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state.rcv_event(UIEvent::Input(key));
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state.redraw();
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},
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}
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},
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UIMode::Insert => {
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match k {
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Key::Char('\n') | Key::Esc => {
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state.mode = UIMode::Normal;
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state.rcv_event(UIEvent::ChangeMode(UIMode::Normal));
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state.redraw();
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},
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k => {
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state.rcv_event(UIEvent::InsertInput(k));
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state.redraw();
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},
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}
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}
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UIMode::Execute => {
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match k {
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Key::Char('\n') | Key::Esc => {
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state.mode = UIMode::Normal;
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state.rcv_event(UIEvent::ChangeMode(UIMode::Normal));
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state.redraw();
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},
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k => {
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state.rcv_event(UIEvent::ExInput(k));
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state.redraw();
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},
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}
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},
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UIMode::Fork => {
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break 'inner; // `goto` 'reap loop, and wait on child.
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},
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}
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},
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ThreadEvent::RefreshMailbox(event) => {
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state.refresh_event(*event);
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state.redraw();
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},
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ThreadEvent::UIEvent(UIEvent::ChangeMode(f)) => {
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state.mode = f;
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if f == UIMode::Fork {
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break 'inner; // `goto` 'reap loop, and wait on child.
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}
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}
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ThreadEvent::UIEvent(e) => {
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state.rcv_event(e);
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state.render();
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},
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ThreadEvent::ThreadJoin(id) => {
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state.join(id);
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},
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}
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},
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signal.recv() -> signal => {
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if state.mode != UIMode::Fork {
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if let Some(Signal::WINCH) = signal {
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state.update_size();
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state.render();
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state.redraw();
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}
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}
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},
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worker_receiver.recv() -> _ => {
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/* Some worker thread finished their job, acknowledge
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* it and move on*/
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},
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}
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} // end of 'inner
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'reap: loop {
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match state.try_wait_on_child() {
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Some(true) => {
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state.restore_input();
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state.switch_to_alternate_screen();
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}
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Some(false) => {
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use std::{thread, time};
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let ten_millis = time::Duration::from_millis(1500);
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thread::sleep(ten_millis);
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continue 'reap;
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}
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None => {
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state.mode = UIMode::Normal;
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state.render();
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break 'reap;
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}
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}
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}
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}
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}
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