1319 lines
49 KiB
Rust
1319 lines
49 KiB
Rust
/*
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* meli
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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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/*! The application's state.
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The UI crate has an Box<dyn Component>-Component-System design. The System part, is also the application's state, so they're both merged in the `State` struct.
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`State` owns all the Components of the UI. In the application's main event loop, input is handed to the state in the form of `UIEvent` objects which traverse the component graph. Components decide to handle each input or not.
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Input is received in the main loop from threads which listen on the stdin for user input, observe folders for file changes etc. The relevant struct is `ThreadEvent`.
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*/
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use super::*;
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//use crate::plugins::PluginManager;
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use melib::backends::{AccountHash, BackendEventConsumer};
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use crate::jobs::JobExecutor;
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use crossbeam::channel::{unbounded, Receiver, Sender};
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use indexmap::IndexMap;
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use smallvec::SmallVec;
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use std::env;
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use std::io::Write;
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use std::os::unix::io::RawFd;
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use std::sync::Arc;
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use std::thread;
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use termion::raw::IntoRawMode;
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use termion::screen::AlternateScreen;
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use termion::{clear, cursor};
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pub type StateStdout = termion::screen::AlternateScreen<termion::raw::RawTerminal<std::io::Stdout>>;
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struct InputHandler {
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pipe: (RawFd, RawFd),
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rx: Receiver<InputCommand>,
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tx: Sender<InputCommand>,
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state_tx: Sender<ThreadEvent>,
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control: std::sync::Weak<()>,
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}
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impl InputHandler {
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fn restore(&mut self) {
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let working = Arc::new(());
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let control = Arc::downgrade(&working);
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/* Clear channel without blocking. switch_to_main_screen() issues a kill when
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* returning from a fork and there's no input thread, so the newly created thread will
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* receive it and die. */
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//let _ = self.rx.try_iter().count();
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let rx = self.rx.clone();
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let pipe = self.pipe.0;
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let tx = self.state_tx.clone();
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thread::Builder::new()
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.name("input-thread".to_string())
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.spawn(move || {
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get_events(
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|i| {
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tx.send(ThreadEvent::Input(i)).unwrap();
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},
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&rx,
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pipe,
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working,
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)
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})
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.unwrap();
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self.control = control;
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}
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fn kill(&self) {
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let _ = nix::unistd::write(self.pipe.1, &[1]);
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self.tx.send(InputCommand::Kill).unwrap();
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}
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fn check(&mut self) {
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match self.control.upgrade() {
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Some(_) => {}
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None => {
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debug!("restarting input_thread");
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self.restore();
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}
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}
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}
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}
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/// A context container for loaded settings, accounts, UI changes, etc.
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pub struct Context {
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pub accounts: IndexMap<AccountHash, Account>,
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pub settings: Settings,
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/// Areas of the screen that must be redrawn in the next render
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pub dirty_areas: VecDeque<Area>,
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/// Events queue that components send back to the state
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pub replies: VecDeque<UIEvent>,
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pub sender: Sender<ThreadEvent>,
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receiver: Receiver<ThreadEvent>,
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input_thread: InputHandler,
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pub job_executor: Arc<JobExecutor>,
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pub children: Vec<std::process::Child>,
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pub temp_files: Vec<File>,
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}
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impl Context {
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pub fn replies(&mut self) -> smallvec::SmallVec<[UIEvent; 8]> {
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self.replies.drain(0..).collect()
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}
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pub fn input_kill(&self) {
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self.input_thread.kill();
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}
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pub fn restore_input(&mut self) {
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self.input_thread.restore();
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}
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pub fn is_online_idx(&mut self, account_pos: usize) -> Result<()> {
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let Context {
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ref mut accounts,
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ref mut replies,
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..
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} = self;
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let was_online = accounts[account_pos].is_online.is_ok();
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let ret = accounts[account_pos].is_online();
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if ret.is_ok() {
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if !was_online {
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debug!("inserting mailbox hashes:");
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for mailbox_node in accounts[account_pos].list_mailboxes() {
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debug!(
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"hash & mailbox: {:?} {}",
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mailbox_node.hash,
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accounts[account_pos][&mailbox_node.hash].name()
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);
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}
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accounts[account_pos].watch();
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replies.push_back(UIEvent::AccountStatusChange(accounts[account_pos].hash()));
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}
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}
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if ret.is_ok() != was_online {
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replies.push_back(UIEvent::AccountStatusChange(accounts[account_pos].hash()));
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}
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ret
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}
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pub fn is_online(&mut self, account_hash: AccountHash) -> Result<()> {
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let idx = self.accounts.get_index_of(&account_hash).unwrap();
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self.is_online_idx(idx)
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}
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}
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/// A State object to manage and own components and components of the UI. `State` is responsible for
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/// managing the terminal and interfacing with `melib`
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pub struct State {
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cols: usize,
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rows: usize,
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grid: CellBuffer,
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overlay_grid: CellBuffer,
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draw_rate_limit: RateLimit,
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stdout: Option<StateStdout>,
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mouse: bool,
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child: Option<ForkType>,
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draw_horizontal_segment_fn: fn(&mut CellBuffer, &mut StateStdout, usize, usize, usize) -> (),
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pub mode: UIMode,
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overlay: Vec<Box<dyn Component>>,
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components: Vec<Box<dyn Component>>,
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pub context: Context,
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timer: thread::JoinHandle<()>,
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display_messages: SmallVec<[DisplayMessage; 8]>,
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display_messages_expiration_start: Option<UnixTimestamp>,
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display_messages_active: bool,
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display_messages_dirty: bool,
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display_messages_initialised: bool,
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display_messages_pos: usize,
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display_messages_area: Area,
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}
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#[derive(Debug)]
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struct DisplayMessage {
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timestamp: UnixTimestamp,
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msg: String,
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}
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impl Drop for State {
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fn drop(&mut self) {
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// When done, restore the defaults to avoid messing with the terminal.
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self.switch_to_main_screen();
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use nix::sys::wait::{waitpid, WaitPidFlag};
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for child in self.context.children.iter_mut() {
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if let Err(err) = waitpid(
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nix::unistd::Pid::from_raw(child.id() as i32),
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Some(WaitPidFlag::WNOHANG),
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) {
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debug!("Failed to wait on subprocess {}: {}", child.id(), err);
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}
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}
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if let Some(ForkType::Embed(child_pid)) = self.child.take() {
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/* Try wait, we don't want to block */
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if let Err(e) = waitpid(child_pid, Some(WaitPidFlag::WNOHANG)) {
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debug!("Failed to wait on subprocess {}: {}", child_pid, e);
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}
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}
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}
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}
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impl State {
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pub fn new(
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settings: Option<Settings>,
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sender: Sender<ThreadEvent>,
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receiver: Receiver<ThreadEvent>,
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) -> Result<Self> {
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/*
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* Create async channel to block the input-thread if we need to fork and stop it from reading
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* stdin, see get_events() for details
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* */
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let input_thread = unbounded();
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let input_thread_pipe = nix::unistd::pipe()
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.map_err(|err| Box::new(err) as Box<dyn std::error::Error + Send + Sync + 'static>)?;
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let backends = Backends::new();
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let settings = if let Some(settings) = settings {
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settings
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} else {
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Settings::new()?
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};
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/*
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let mut plugin_manager = PluginManager::new();
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for (_, p) in settings.plugins.clone() {
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if crate::plugins::PluginKind::Backend == p.kind() {
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debug!("registering {:?}", &p);
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crate::plugins::backend::PluginBackend::register(
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plugin_manager.listener(),
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p.clone(),
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&mut backends,
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);
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}
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plugin_manager.register(p)?;
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}
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*/
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let termsize = termion::terminal_size()?;
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let cols = termsize.0 as usize;
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let rows = termsize.1 as usize;
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let job_executor = Arc::new(JobExecutor::new(sender.clone()));
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let accounts = {
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settings
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.accounts
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.iter()
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.map(|(n, a_s)| {
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let sender = sender.clone();
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let account_hash = {
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use std::collections::hash_map::DefaultHasher;
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use std::hash::Hasher;
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let mut hasher = DefaultHasher::new();
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hasher.write(n.as_bytes());
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hasher.finish()
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};
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Account::new(
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account_hash,
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n.to_string(),
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a_s.clone(),
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&backends,
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job_executor.clone(),
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sender.clone(),
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BackendEventConsumer::new(Arc::new(
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move |account_hash: AccountHash, ev: BackendEvent| {
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sender
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.send(ThreadEvent::UIEvent(UIEvent::BackendEvent(
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account_hash,
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ev,
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)))
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.unwrap();
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},
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)),
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)
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})
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.collect::<Result<Vec<Account>>>()?
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};
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let accounts = accounts.into_iter().map(|acc| (acc.hash(), acc)).collect();
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let timer = {
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let sender = sender.clone();
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thread::Builder::new().spawn(move || {
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let sender = sender;
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loop {
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thread::park();
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sender.send(ThreadEvent::Pulse).unwrap();
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thread::sleep(std::time::Duration::from_millis(100));
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}
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})
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}?;
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timer.thread().unpark();
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let working = Arc::new(());
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let control = Arc::downgrade(&working);
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let mut s = State {
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cols,
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rows,
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grid: CellBuffer::new(cols, rows, Cell::with_char(' ')),
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overlay_grid: CellBuffer::new(cols, rows, Cell::with_char(' ')),
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stdout: None,
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mouse: settings.terminal.use_mouse.is_true(),
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child: None,
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mode: UIMode::Normal,
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components: Vec::with_capacity(8),
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overlay: Vec::new(),
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timer,
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draw_rate_limit: RateLimit::new(1, 3, job_executor.clone()),
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draw_horizontal_segment_fn: if settings.terminal.use_color() {
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State::draw_horizontal_segment
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} else {
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State::draw_horizontal_segment_no_color
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},
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display_messages: SmallVec::new(),
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display_messages_expiration_start: None,
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display_messages_pos: 0,
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display_messages_active: false,
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display_messages_dirty: false,
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display_messages_initialised: false,
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display_messages_area: ((0, 0), (0, 0)),
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context: Context {
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accounts,
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settings: settings,
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dirty_areas: VecDeque::with_capacity(5),
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replies: VecDeque::with_capacity(5),
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temp_files: Vec::new(),
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job_executor,
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children: vec![],
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input_thread: InputHandler {
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pipe: input_thread_pipe,
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rx: input_thread.1,
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tx: input_thread.0,
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control,
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state_tx: sender.clone(),
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},
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sender,
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receiver,
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},
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};
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if s.context.settings.terminal.ascii_drawing {
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s.grid.set_ascii_drawing(true);
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s.overlay_grid.set_ascii_drawing(true);
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}
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s.switch_to_alternate_screen();
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for i in 0..s.context.accounts.len() {
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if !s.context.accounts[i].backend_capabilities.is_remote {
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s.context.accounts[i].watch();
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}
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if s.context.is_online_idx(i).is_ok() && s.context.accounts[i].is_empty() {
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//return Err(MeliError::new(format!(
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// "Account {} has no mailboxes configured.",
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// s.context.accounts[i].name()
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//)));
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}
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}
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s.context.restore_input();
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Ok(s)
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}
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/*
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* When we receive a mailbox hash from a watcher thread,
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* we match the hash to the index of the mailbox, request a reload
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* and startup a thread to remind us to poll it every now and then till it's finished.
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*/
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pub fn refresh_event(&mut self, event: RefreshEvent) {
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let account_hash = event.account_hash;
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let mailbox_hash = event.mailbox_hash;
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if self.context.accounts[&account_hash]
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.mailbox_entries
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.contains_key(&mailbox_hash)
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{
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if self.context.accounts[&account_hash]
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.load(mailbox_hash)
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.is_err()
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{
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self.context.replies.push_back(UIEvent::from(event));
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return;
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}
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let Context {
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ref mut accounts, ..
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} = &mut self.context;
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if let Some(notification) = accounts[&account_hash].reload(event, mailbox_hash) {
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if let UIEvent::Notification(_, _, _) = notification {
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self.rcv_event(UIEvent::MailboxUpdate((account_hash, mailbox_hash)));
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}
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self.rcv_event(notification);
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}
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} else {
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if let melib::backends::RefreshEventKind::Failure(err) = event.kind {
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debug!(err);
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}
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}
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}
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/// Switch back to the terminal's main screen (The command line the user sees before opening
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/// the application)
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pub fn switch_to_main_screen(&mut self) {
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let mouse = self.mouse;
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write!(
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self.stdout(),
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"{}{}{}{}{disable_sgr_mouse}{disable_mouse}",
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termion::screen::ToMainScreen,
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cursor::Show,
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RestoreWindowTitleIconFromStack,
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BracketModeEnd,
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disable_sgr_mouse = if mouse { DisableSGRMouse.as_ref() } else { "" },
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disable_mouse = if mouse { DisableMouse.as_ref() } else { "" },
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)
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.unwrap();
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self.flush();
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self.stdout = None;
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}
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pub fn switch_to_alternate_screen(&mut self) {
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let s = std::io::stdout();
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let mut stdout = AlternateScreen::from(s.into_raw_mode().unwrap());
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write!(
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&mut stdout,
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"{save_title_to_stack}{}{}{}{window_title}{}{}{enable_mouse}{enable_sgr_mouse}",
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termion::screen::ToAlternateScreen,
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cursor::Hide,
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clear::All,
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cursor::Goto(1, 1),
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BracketModeStart,
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save_title_to_stack = SaveWindowTitleIconToStack,
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window_title = if let Some(ref title) = self.context.settings.terminal.window_title {
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format!("\x1b]2;{}\x07", title)
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} else {
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String::new()
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},
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enable_mouse = if self.mouse { EnableMouse.as_ref() } else { "" },
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enable_sgr_mouse = if self.mouse {
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EnableSGRMouse.as_ref()
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} else {
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""
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},
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)
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.unwrap();
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self.stdout = Some(stdout);
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self.flush();
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}
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|
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pub fn set_mouse(&mut self, value: bool) {
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if let Some(stdout) = self.stdout.as_mut() {
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write!(
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stdout,
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"{mouse}{sgr_mouse}",
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mouse = if value {
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AsRef::<str>::as_ref(&EnableMouse)
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} else {
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AsRef::<str>::as_ref(&DisableMouse)
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},
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sgr_mouse = if value {
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AsRef::<str>::as_ref(&EnableSGRMouse)
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} else {
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AsRef::<str>::as_ref(&DisableSGRMouse)
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},
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)
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.unwrap();
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}
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self.flush();
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}
|
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|
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pub fn receiver(&self) -> Receiver<ThreadEvent> {
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self.context.receiver.clone()
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}
|
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|
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pub fn sender(&self) -> Sender<ThreadEvent> {
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self.context.sender.clone()
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}
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|
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pub fn restore_input(&mut self) {
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self.context.restore_input();
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}
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|
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/// On `SIGWNICH` the `State` redraws itself according to the new terminal size.
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pub fn update_size(&mut self) {
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let termsize = termion::terminal_size().ok();
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let termcols = termsize.map(|(w, _)| w);
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let termrows = termsize.map(|(_, h)| h);
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if termcols.unwrap_or(72) as usize != self.cols
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|| termrows.unwrap_or(120) as usize != self.rows
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{
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debug!(
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"Size updated, from ({}, {}) -> ({:?}, {:?})",
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self.cols, self.rows, termcols, termrows
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);
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}
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self.cols = termcols.unwrap_or(72) as usize;
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self.rows = termrows.unwrap_or(120) as usize;
|
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if !self.grid.resize(self.cols, self.rows, None) {
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panic!(
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"Terminal size too big: ({} cols, {} rows)",
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self.cols, self.rows
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);
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}
|
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let _ = self.overlay_grid.resize(self.cols, self.rows, None);
|
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|
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self.rcv_event(UIEvent::Resize);
|
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self.display_messages_dirty = true;
|
|
self.display_messages_initialised = false;
|
|
self.display_messages_area = ((0, 0), (0, 0));
|
|
|
|
// Invalidate dirty areas.
|
|
self.context.dirty_areas.clear();
|
|
}
|
|
|
|
/// Force a redraw for all dirty components.
|
|
pub fn redraw(&mut self) {
|
|
if !self.draw_rate_limit.tick() {
|
|
return;
|
|
}
|
|
|
|
for i in 0..self.components.len() {
|
|
self.draw_component(i);
|
|
}
|
|
let mut areas: smallvec::SmallVec<[Area; 8]> =
|
|
self.context.dirty_areas.drain(0..).collect();
|
|
if self.display_messages_active {
|
|
let now = melib::datetime::now();
|
|
if self
|
|
.display_messages_expiration_start
|
|
.map(|t| t + 5 < now)
|
|
.unwrap_or(false)
|
|
{
|
|
self.display_messages_active = false;
|
|
self.display_messages_dirty = true;
|
|
self.display_messages_initialised = false;
|
|
self.display_messages_expiration_start = None;
|
|
areas.push((
|
|
(0, 0),
|
|
(self.cols.saturating_sub(1), self.rows.saturating_sub(1)),
|
|
));
|
|
}
|
|
}
|
|
|
|
/* Sort by x_start, ie upper_left corner's x coordinate */
|
|
areas.sort_by(|a, b| (a.0).0.partial_cmp(&(b.0).0).unwrap());
|
|
|
|
if self.display_messages_active {
|
|
/* Check if any dirty area intersects with the area occupied by floating notification
|
|
* box */
|
|
let (displ_top, displ_bot) = self.display_messages_area;
|
|
for &((top_x, top_y), (bottom_x, bottom_y)) in &areas {
|
|
self.display_messages_dirty |= !(bottom_y < displ_top.1
|
|
|| displ_bot.1 < top_y
|
|
|| bottom_x < displ_top.0
|
|
|| displ_bot.0 < top_x);
|
|
}
|
|
}
|
|
/* draw each dirty area */
|
|
let rows = self.rows;
|
|
for y in 0..rows {
|
|
let mut segment = None;
|
|
for ((x_start, y_start), (x_end, y_end)) in &areas {
|
|
if y < *y_start || y > *y_end {
|
|
continue;
|
|
}
|
|
if let Some((x_start, x_end)) = segment.take() {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
x_start,
|
|
x_end,
|
|
y,
|
|
);
|
|
}
|
|
match segment {
|
|
ref mut s @ None => {
|
|
*s = Some((*x_start, *x_end));
|
|
}
|
|
ref mut s @ Some(_) if s.unwrap().1 < *x_start => {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
s.unwrap().0,
|
|
s.unwrap().1,
|
|
y,
|
|
);
|
|
*s = Some((*x_start, *x_end));
|
|
}
|
|
ref mut s @ Some(_) if s.unwrap().1 < *x_end => {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
s.unwrap().0,
|
|
s.unwrap().1,
|
|
y,
|
|
);
|
|
*s = Some((s.unwrap().1, *x_end));
|
|
}
|
|
Some((_, ref mut x)) => {
|
|
*x = *x_end;
|
|
}
|
|
}
|
|
}
|
|
if let Some((x_start, x_end)) = segment {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
x_start,
|
|
x_end,
|
|
y,
|
|
);
|
|
}
|
|
}
|
|
|
|
if self.display_messages_dirty && self.display_messages_active {
|
|
if let Some(DisplayMessage {
|
|
ref timestamp,
|
|
ref msg,
|
|
..
|
|
}) = self.display_messages.get(self.display_messages_pos)
|
|
{
|
|
if !self.display_messages_initialised {
|
|
{
|
|
/* Clear area previously occupied by floating notification box */
|
|
let displ_area = self.display_messages_area;
|
|
for y in get_y(upper_left!(displ_area))..=get_y(bottom_right!(displ_area)) {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
get_x(upper_left!(displ_area)),
|
|
get_x(bottom_right!(displ_area)),
|
|
y,
|
|
);
|
|
}
|
|
}
|
|
let noto_colors = crate::conf::value(&self.context, "status.notification");
|
|
use crate::melib::text_processing::{Reflow, TextProcessing};
|
|
|
|
let msg_lines = msg.split_lines_reflow(Reflow::All, Some(self.cols / 3));
|
|
let width = msg_lines
|
|
.iter()
|
|
.map(|line| line.grapheme_len() + 4)
|
|
.max()
|
|
.unwrap_or(0);
|
|
|
|
let displ_area = place_in_area(
|
|
(
|
|
(0, 0),
|
|
(self.cols.saturating_sub(1), self.rows.saturating_sub(1)),
|
|
),
|
|
(width, std::cmp::min(self.rows, msg_lines.len() + 4)),
|
|
false,
|
|
false,
|
|
);
|
|
let box_displ_area = create_box(&mut self.overlay_grid, displ_area);
|
|
for row in self.overlay_grid.bounds_iter(box_displ_area) {
|
|
for c in row {
|
|
self.overlay_grid[c]
|
|
.set_ch(' ')
|
|
.set_fg(noto_colors.fg)
|
|
.set_bg(noto_colors.bg)
|
|
.set_attrs(noto_colors.attrs);
|
|
}
|
|
}
|
|
let ((x, mut y), box_displ_area_bottom_right) = box_displ_area;
|
|
for line in msg_lines.into_iter().chain(Some(String::new())).chain(Some(
|
|
melib::datetime::timestamp_to_string(*timestamp, None, false),
|
|
)) {
|
|
write_string_to_grid(
|
|
&line,
|
|
&mut self.overlay_grid,
|
|
noto_colors.fg,
|
|
noto_colors.bg,
|
|
noto_colors.attrs,
|
|
((x, y), box_displ_area_bottom_right),
|
|
Some(x),
|
|
);
|
|
y += 1;
|
|
}
|
|
|
|
if self.display_messages.len() > 1 {
|
|
write_string_to_grid(
|
|
if self.display_messages_pos == 0 {
|
|
"Next: >"
|
|
} else if self.display_messages_pos + 1 == self.display_messages.len() {
|
|
"Prev: <"
|
|
} else {
|
|
"Prev: <, Next: >"
|
|
},
|
|
&mut self.overlay_grid,
|
|
noto_colors.fg,
|
|
noto_colors.bg,
|
|
noto_colors.attrs,
|
|
((x, y), box_displ_area_bottom_right),
|
|
Some(x),
|
|
);
|
|
}
|
|
self.display_messages_area = displ_area;
|
|
}
|
|
for y in get_y(upper_left!(self.display_messages_area))
|
|
..=get_y(bottom_right!(self.display_messages_area))
|
|
{
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.overlay_grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
get_x(upper_left!(self.display_messages_area)),
|
|
get_x(bottom_right!(self.display_messages_area)),
|
|
y,
|
|
);
|
|
}
|
|
}
|
|
self.display_messages_dirty = false;
|
|
} else if self.display_messages_dirty {
|
|
/* Clear area previously occupied by floating notification box */
|
|
let displ_area = self.display_messages_area;
|
|
for y in get_y(upper_left!(displ_area))..=get_y(bottom_right!(displ_area)) {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
get_x(upper_left!(displ_area)),
|
|
get_x(bottom_right!(displ_area)),
|
|
y,
|
|
);
|
|
}
|
|
self.display_messages_dirty = false;
|
|
}
|
|
if !self.overlay.is_empty() {
|
|
let area = center_area(
|
|
(
|
|
(0, 0),
|
|
(self.cols.saturating_sub(1), self.rows.saturating_sub(1)),
|
|
),
|
|
(
|
|
if self.cols / 3 > 30 {
|
|
self.cols / 3
|
|
} else {
|
|
self.cols
|
|
},
|
|
if self.rows / 5 > 10 {
|
|
self.rows / 5
|
|
} else {
|
|
self.rows
|
|
},
|
|
),
|
|
);
|
|
copy_area(&mut self.overlay_grid, &self.grid, area, area);
|
|
self.overlay
|
|
.get_mut(0)
|
|
.unwrap()
|
|
.draw(&mut self.overlay_grid, area, &mut self.context);
|
|
for y in get_y(upper_left!(area))..=get_y(bottom_right!(area)) {
|
|
(self.draw_horizontal_segment_fn)(
|
|
&mut self.overlay_grid,
|
|
self.stdout.as_mut().unwrap(),
|
|
get_x(upper_left!(area)),
|
|
get_x(bottom_right!(area)),
|
|
y,
|
|
);
|
|
}
|
|
}
|
|
self.flush();
|
|
}
|
|
|
|
/// Draw only a specific `area` on the screen.
|
|
fn draw_horizontal_segment(
|
|
grid: &mut CellBuffer,
|
|
stdout: &mut StateStdout,
|
|
x_start: usize,
|
|
x_end: usize,
|
|
y: usize,
|
|
) {
|
|
write!(
|
|
stdout,
|
|
"{}",
|
|
cursor::Goto(x_start as u16 + 1, (y + 1) as u16)
|
|
)
|
|
.unwrap();
|
|
let mut current_fg = Color::Default;
|
|
let mut current_bg = Color::Default;
|
|
let mut current_attrs = Attr::DEFAULT;
|
|
write!(stdout, "\x1B[m").unwrap();
|
|
for x in x_start..=x_end {
|
|
let c = &grid[(x, y)];
|
|
if c.attrs() != current_attrs {
|
|
c.attrs().write(current_attrs, stdout).unwrap();
|
|
current_attrs = c.attrs();
|
|
}
|
|
if c.bg() != current_bg {
|
|
c.bg().write_bg(stdout).unwrap();
|
|
current_bg = c.bg();
|
|
}
|
|
if c.fg() != current_fg {
|
|
c.fg().write_fg(stdout).unwrap();
|
|
current_fg = c.fg();
|
|
}
|
|
if !c.empty() {
|
|
write!(stdout, "{}", c.ch()).unwrap();
|
|
}
|
|
}
|
|
}
|
|
|
|
fn draw_horizontal_segment_no_color(
|
|
grid: &mut CellBuffer,
|
|
stdout: &mut StateStdout,
|
|
x_start: usize,
|
|
x_end: usize,
|
|
y: usize,
|
|
) {
|
|
write!(
|
|
stdout,
|
|
"{}",
|
|
cursor::Goto(x_start as u16 + 1, (y + 1) as u16)
|
|
)
|
|
.unwrap();
|
|
let mut current_attrs = Attr::DEFAULT;
|
|
write!(stdout, "\x1B[m").unwrap();
|
|
for x in x_start..=x_end {
|
|
let c = &grid[(x, y)];
|
|
if c.attrs() != current_attrs {
|
|
c.attrs().write(current_attrs, stdout).unwrap();
|
|
current_attrs = c.attrs();
|
|
}
|
|
if !c.empty() {
|
|
write!(stdout, "{}", c.ch()).unwrap();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Draw the entire screen from scratch.
|
|
pub fn render(&mut self) {
|
|
self.update_size();
|
|
let cols = self.cols;
|
|
let rows = self.rows;
|
|
self.context
|
|
.dirty_areas
|
|
.push_back(((0, 0), (cols - 1, rows - 1)));
|
|
|
|
self.redraw();
|
|
}
|
|
|
|
pub fn draw_component(&mut self, idx: usize) {
|
|
let component = &mut self.components[idx];
|
|
let upper_left = (0, 0);
|
|
let bottom_right = (self.cols - 1, self.rows - 1);
|
|
|
|
if component.is_dirty() {
|
|
component.draw(
|
|
&mut self.grid,
|
|
(upper_left, bottom_right),
|
|
&mut self.context,
|
|
);
|
|
}
|
|
}
|
|
|
|
pub fn can_quit_cleanly(&mut self) -> bool {
|
|
let State {
|
|
ref mut components,
|
|
ref context,
|
|
..
|
|
} = self;
|
|
components.iter_mut().all(|c| c.can_quit_cleanly(context))
|
|
}
|
|
|
|
pub fn register_component(&mut self, component: Box<dyn Component>) {
|
|
self.components.push(component);
|
|
}
|
|
|
|
/// Convert user commands to actions/method calls.
|
|
fn exec_command(&mut self, cmd: Action) {
|
|
match cmd {
|
|
SetEnv(key, val) => {
|
|
env::set_var(key.as_str(), val.as_str());
|
|
}
|
|
PrintEnv(key) => {
|
|
self.context
|
|
.replies
|
|
.push_back(UIEvent::StatusEvent(StatusEvent::DisplayMessage(
|
|
env::var(key.as_str()).unwrap_or_else(|e| e.to_string()),
|
|
)));
|
|
}
|
|
Mailbox(account_name, op) => {
|
|
if let Some(account) = self
|
|
.context
|
|
.accounts
|
|
.values_mut()
|
|
.find(|a| a.name() == account_name)
|
|
{
|
|
if let Err(err) = account.mailbox_operation(op) {
|
|
self.context.replies.push_back(UIEvent::StatusEvent(
|
|
StatusEvent::DisplayMessage(err.to_string()),
|
|
));
|
|
}
|
|
} else {
|
|
self.context.replies.push_back(UIEvent::StatusEvent(
|
|
StatusEvent::DisplayMessage(format!(
|
|
"Account with name `{}` not found.",
|
|
account_name
|
|
)),
|
|
));
|
|
}
|
|
}
|
|
#[cfg(feature = "sqlite3")]
|
|
AccountAction(ref account_name, ReIndex) => {
|
|
let account_index = if let Some(a) = self
|
|
.context
|
|
.accounts
|
|
.iter()
|
|
.position(|(_, acc)| acc.name() == account_name)
|
|
{
|
|
a
|
|
} else {
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
None,
|
|
format!("Account {} was not found.", account_name),
|
|
Some(NotificationType::Error(ErrorKind::None)),
|
|
));
|
|
return;
|
|
};
|
|
if *self.context.accounts[account_index]
|
|
.settings
|
|
.conf
|
|
.search_backend()
|
|
!= crate::conf::SearchBackend::Sqlite3
|
|
{
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
None,
|
|
format!(
|
|
"Account {} doesn't have an sqlite3 search backend.",
|
|
account_name
|
|
),
|
|
Some(NotificationType::Error(ErrorKind::None)),
|
|
));
|
|
return;
|
|
}
|
|
match crate::sqlite3::index(&mut self.context, account_index) {
|
|
Ok(job) => {
|
|
let handle = self.context.job_executor.spawn_blocking(job);
|
|
self.context.accounts[account_index].active_jobs.insert(
|
|
handle.job_id,
|
|
crate::conf::accounts::JobRequest::Generic {
|
|
name: "Message index rebuild".into(),
|
|
handle,
|
|
on_finish: None,
|
|
logging_level: melib::LoggingLevel::INFO,
|
|
},
|
|
);
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
None,
|
|
"Message index rebuild started.".to_string(),
|
|
Some(NotificationType::Info),
|
|
));
|
|
}
|
|
Err(err) => {
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
Some("Message index rebuild failed".to_string()),
|
|
err.to_string(),
|
|
Some(NotificationType::Error(err.kind)),
|
|
));
|
|
}
|
|
}
|
|
}
|
|
#[cfg(not(feature = "sqlite3"))]
|
|
AccountAction(ref account_name, ReIndex) => {
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
None,
|
|
"Message index rebuild failed: meli is not built with sqlite3 support."
|
|
.to_string(),
|
|
Some(NotificationType::Error(ErrorKind::None)),
|
|
));
|
|
}
|
|
AccountAction(ref account_name, PrintAccountSetting(ref setting)) => {
|
|
let path = setting.split(".").collect::<SmallVec<[&str; 16]>>();
|
|
if let Some(pos) = self
|
|
.context
|
|
.accounts
|
|
.iter()
|
|
.position(|(_h, a)| a.name() == account_name)
|
|
{
|
|
self.context.replies.push_back(UIEvent::StatusEvent(
|
|
StatusEvent::UpdateStatus(format!(
|
|
"{}",
|
|
self.context.accounts[pos]
|
|
.settings
|
|
.lookup("settings", &path)
|
|
.unwrap_or_else(|err| err.to_string())
|
|
)),
|
|
));
|
|
} else {
|
|
self.context.replies.push_back(UIEvent::Notification(
|
|
None,
|
|
format!("Account {} was not found.", account_name),
|
|
Some(NotificationType::Error(ErrorKind::None)),
|
|
));
|
|
return;
|
|
}
|
|
}
|
|
PrintSetting(ref setting) => {
|
|
let path = setting.split(".").collect::<SmallVec<[&str; 16]>>();
|
|
self.context
|
|
.replies
|
|
.push_back(UIEvent::StatusEvent(StatusEvent::UpdateStatus(format!(
|
|
"{}",
|
|
self.context
|
|
.settings
|
|
.lookup("settings", &path)
|
|
.unwrap_or_else(|err| err.to_string())
|
|
))));
|
|
}
|
|
ToggleMouse => {
|
|
self.mouse = !self.mouse;
|
|
self.set_mouse(self.mouse);
|
|
self.rcv_event(UIEvent::StatusEvent(StatusEvent::SetMouse(self.mouse)));
|
|
}
|
|
Quit => {
|
|
self.context
|
|
.sender
|
|
.send(ThreadEvent::Input((
|
|
self.context.settings.shortcuts.general.quit.clone(),
|
|
vec![],
|
|
)))
|
|
.unwrap();
|
|
}
|
|
v => {
|
|
self.rcv_event(UIEvent::Action(v));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// The application's main loop sends `UIEvents` to state via this method.
|
|
pub fn rcv_event(&mut self, mut event: UIEvent) {
|
|
if let UIEvent::Input(_) = event {
|
|
if self.display_messages_expiration_start.is_none() {
|
|
self.display_messages_expiration_start = Some(melib::datetime::now());
|
|
}
|
|
}
|
|
|
|
match event {
|
|
// Command type is handled only by State.
|
|
UIEvent::Command(cmd) => {
|
|
if let Ok(action) = parse_command(&cmd.as_bytes()) {
|
|
if action.needs_confirmation() {
|
|
self.overlay.push(Box::new(UIConfirmationDialog::new(
|
|
"You sure?",
|
|
vec![(true, "yes".to_string()), (false, "no".to_string())],
|
|
true,
|
|
Some(Box::new(move |id: ComponentId, result: bool| {
|
|
Some(UIEvent::FinishedUIDialog(
|
|
id,
|
|
Box::new(if result { Some(action) } else { None }),
|
|
))
|
|
})),
|
|
&mut self.context,
|
|
)));
|
|
} else if let Action::ReloadConfiguration = action {
|
|
match Settings::new().and_then(|new_settings| {
|
|
let old_accounts = self.context.settings.accounts.keys().collect::<std::collections::HashSet<&String>>();
|
|
let new_accounts = new_settings.accounts.keys().collect::<std::collections::HashSet<&String>>();
|
|
if old_accounts != new_accounts {
|
|
return Err("cannot reload account configuration changes; restart meli instead.".into());
|
|
}
|
|
for (key, acc) in new_settings.accounts.iter() {
|
|
if toml::Value::try_from(&acc) != toml::Value::try_from(&self.context.settings.accounts[key]) {
|
|
return Err("cannot reload account configuration changes; restart meli instead.".into());
|
|
}
|
|
}
|
|
if toml::Value::try_from(&new_settings) == toml::Value::try_from(&self.context.settings) {
|
|
return Err("No changes detected.".into());
|
|
}
|
|
Ok(new_settings)
|
|
}) {
|
|
Ok(new_settings) => {
|
|
let old_settings = std::mem::replace(&mut self.context.settings, new_settings);
|
|
self.context.replies.push_back(UIEvent::ConfigReload {
|
|
old_settings
|
|
});
|
|
self.context.replies.push_back(UIEvent::Resize);
|
|
}
|
|
Err(err) => {
|
|
self.context.replies.push_back(UIEvent::StatusEvent(
|
|
StatusEvent::DisplayMessage(format!(
|
|
"Could not load configuration: {}",
|
|
err
|
|
)),
|
|
));
|
|
}
|
|
}
|
|
} else {
|
|
self.exec_command(action);
|
|
}
|
|
} else {
|
|
self.context.replies.push_back(UIEvent::StatusEvent(
|
|
StatusEvent::DisplayMessage("invalid command".to_string()),
|
|
));
|
|
}
|
|
return;
|
|
}
|
|
UIEvent::Fork(ForkType::Finished) => {
|
|
/*
|
|
* Fork has finished in the past.
|
|
* We're back in the AlternateScreen, but the cursor is reset to Shown, so fix
|
|
* it.
|
|
write!(self.stdout(), "{}", cursor::Hide,).unwrap();
|
|
self.flush();
|
|
*/
|
|
self.switch_to_main_screen();
|
|
self.switch_to_alternate_screen();
|
|
self.context.restore_input();
|
|
return;
|
|
}
|
|
UIEvent::Fork(ForkType::Generic(child)) => {
|
|
self.context.children.push(child);
|
|
return;
|
|
}
|
|
UIEvent::Fork(child) => {
|
|
self.mode = UIMode::Fork;
|
|
self.child = Some(child);
|
|
return;
|
|
}
|
|
UIEvent::BackendEvent(
|
|
account_hash,
|
|
BackendEvent::Notice {
|
|
ref description,
|
|
ref content,
|
|
level,
|
|
},
|
|
) => {
|
|
log(
|
|
format!(
|
|
"{}: {}{}{}",
|
|
self.context.accounts[&account_hash].name(),
|
|
description.as_ref().map(|s| s.as_str()).unwrap_or(""),
|
|
if description.is_some() { ": " } else { "" },
|
|
content.as_str()
|
|
),
|
|
level,
|
|
);
|
|
self.rcv_event(UIEvent::StatusEvent(StatusEvent::DisplayMessage(
|
|
content.to_string(),
|
|
)));
|
|
return;
|
|
}
|
|
UIEvent::BackendEvent(_, BackendEvent::Refresh(refresh_event)) => {
|
|
self.refresh_event(refresh_event);
|
|
return;
|
|
}
|
|
UIEvent::ChangeMode(m) => {
|
|
self.context
|
|
.sender
|
|
.send(ThreadEvent::UIEvent(UIEvent::ChangeMode(m)))
|
|
.unwrap();
|
|
}
|
|
UIEvent::Timer(id) if id == self.draw_rate_limit.id() => {
|
|
self.draw_rate_limit.reset();
|
|
self.redraw();
|
|
return;
|
|
}
|
|
UIEvent::Input(Key::Alt('<')) => {
|
|
self.display_messages_expiration_start = Some(melib::datetime::now());
|
|
self.display_messages_active = true;
|
|
self.display_messages_initialised = false;
|
|
self.display_messages_dirty = true;
|
|
self.display_messages_pos = self.display_messages_pos.saturating_sub(1);
|
|
return;
|
|
}
|
|
UIEvent::Input(Key::Alt('>')) => {
|
|
self.display_messages_expiration_start = Some(melib::datetime::now());
|
|
self.display_messages_active = true;
|
|
self.display_messages_initialised = false;
|
|
self.display_messages_dirty = true;
|
|
self.display_messages_pos = std::cmp::min(
|
|
self.display_messages.len().saturating_sub(1),
|
|
self.display_messages_pos + 1,
|
|
);
|
|
return;
|
|
}
|
|
UIEvent::StatusEvent(StatusEvent::DisplayMessage(ref msg)) => {
|
|
self.display_messages.push(DisplayMessage {
|
|
timestamp: melib::datetime::now(),
|
|
msg: msg.clone(),
|
|
});
|
|
self.display_messages_active = true;
|
|
self.display_messages_initialised = false;
|
|
self.display_messages_dirty = true;
|
|
self.display_messages_expiration_start = None;
|
|
self.display_messages_pos = self.display_messages.len() - 1;
|
|
self.redraw();
|
|
}
|
|
UIEvent::ComponentKill(ref id) if self.overlay.iter().any(|c| c.id() == *id) => {
|
|
let pos = self.overlay.iter().position(|c| c.id() == *id).unwrap();
|
|
self.overlay.remove(pos);
|
|
}
|
|
UIEvent::FinishedUIDialog(ref id, ref mut results)
|
|
if self.overlay.iter().any(|c| c.id() == *id) =>
|
|
{
|
|
if let Some(ref mut action @ Some(_)) = results.downcast_mut::<Option<Action>>() {
|
|
self.exec_command(action.take().unwrap());
|
|
|
|
return;
|
|
}
|
|
}
|
|
UIEvent::Callback(callback_fn) => {
|
|
(callback_fn.0)(&mut self.context);
|
|
return;
|
|
}
|
|
UIEvent::GlobalUIDialog(dialog) => {
|
|
self.overlay.push(dialog);
|
|
return;
|
|
}
|
|
_ => {}
|
|
}
|
|
let Self {
|
|
ref mut components,
|
|
ref mut context,
|
|
ref mut overlay,
|
|
..
|
|
} = self;
|
|
|
|
/* inform each component */
|
|
for c in overlay.iter_mut().chain(components.iter_mut()) {
|
|
if c.process_event(&mut event, context) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if !self.context.replies.is_empty() {
|
|
let replies: smallvec::SmallVec<[UIEvent; 8]> =
|
|
self.context.replies.drain(0..).collect();
|
|
// Pass replies to self and call count on the map iterator to force evaluation
|
|
replies.into_iter().map(|r| self.rcv_event(r)).count();
|
|
}
|
|
}
|
|
|
|
pub fn try_wait_on_child(&mut self) -> Option<bool> {
|
|
let should_return_flag = match self.child {
|
|
Some(ForkType::NewDraft(_, ref mut c)) => {
|
|
let w = c.try_wait();
|
|
match w {
|
|
Ok(Some(_)) => true,
|
|
Ok(None) => false,
|
|
Err(e) => {
|
|
log(
|
|
format!("Failed to wait on editor process: {}", e.to_string()),
|
|
ERROR,
|
|
);
|
|
return None;
|
|
}
|
|
}
|
|
}
|
|
Some(ForkType::Generic(ref mut c)) => {
|
|
let w = c.try_wait();
|
|
match w {
|
|
Ok(Some(_)) => true,
|
|
Ok(None) => false,
|
|
Err(e) => {
|
|
log(
|
|
format!("Failed to wait on child process: {}", e.to_string()),
|
|
ERROR,
|
|
);
|
|
return None;
|
|
}
|
|
}
|
|
}
|
|
Some(ForkType::Finished) => {
|
|
/* Fork has already finished */
|
|
self.child = None;
|
|
return None;
|
|
}
|
|
_ => {
|
|
return None;
|
|
}
|
|
};
|
|
if should_return_flag {
|
|
return Some(true);
|
|
}
|
|
Some(false)
|
|
}
|
|
fn flush(&mut self) {
|
|
if let Some(s) = self.stdout.as_mut() {
|
|
s.flush().unwrap();
|
|
}
|
|
}
|
|
fn stdout(&mut self) -> &mut StateStdout {
|
|
self.stdout.as_mut().unwrap()
|
|
}
|
|
|
|
pub fn check_accounts(&mut self) {
|
|
let mut ctr = 0;
|
|
for i in 0..self.context.accounts.len() {
|
|
if self.context.is_online_idx(i).is_ok() {
|
|
ctr += 1;
|
|
}
|
|
}
|
|
if ctr != self.context.accounts.len() {
|
|
self.timer.thread().unpark();
|
|
}
|
|
self.context.input_thread.check();
|
|
}
|
|
}
|