680 lines
25 KiB
Rust
680 lines
25 KiB
Rust
/*
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* meli - ui crate.
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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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use super::*;
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const MAX_COLS: usize = 500;
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/// A list of all mail (`Envelope`s) in a `Mailbox`. On `\n` it opens the thread's content in a
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/// `ThreadView`.
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pub struct CompactMailListing {
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/// (x, y, z): x is accounts, y is folders, z is index inside a folder.
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cursor_pos: (usize, usize, usize),
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new_cursor_pos: (usize, usize, usize),
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length: usize,
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sort: (SortField, SortOrder),
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//subsort: (SortField, SortOrder),
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/// Cache current view.
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content: CellBuffer,
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/// If we must redraw on next redraw event
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dirty: bool,
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/// If `self.view` exists or not.
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unfocused: bool,
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view: Option<ThreadView>,
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}
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impl Default for CompactMailListing {
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fn default() -> Self {
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Self::new()
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}
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}
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impl fmt::Display for CompactMailListing {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "mail")
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}
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}
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impl CompactMailListing {
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pub fn new() -> Self {
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let content = CellBuffer::new(0, 0, Cell::with_char(' '));
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CompactMailListing {
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cursor_pos: (0, 1, 0),
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new_cursor_pos: (0, 0, 0),
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length: 0,
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sort: (SortField::Date, SortOrder::Desc),
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//subsort: (SortField::Date, SortOrder::Asc),
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content: content,
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dirty: true,
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unfocused: false,
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view: None,
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}
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}
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/// Fill the `self.content` `CellBuffer` with the contents of the account folder the user has
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/// chosen.
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fn refresh_mailbox(&mut self, context: &mut Context) {
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self.dirty = true;
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self.cursor_pos.2 = 0;
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self.new_cursor_pos.2 = 0;
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self.cursor_pos.1 = self.new_cursor_pos.1;
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self.cursor_pos.0 = self.new_cursor_pos.0;
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// Inform State that we changed the current folder view.
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context.replies.push_back(UIEvent {
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id: 0,
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event_type: UIEventType::RefreshMailbox((self.cursor_pos.0, self.cursor_pos.1)),
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});
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// Get mailbox as a reference.
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//
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loop {
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// TODO: Show progress visually
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if let Ok(()) = context.accounts[self.cursor_pos.0].status(self.cursor_pos.1) {
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break;
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}
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}
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let mailbox = &mut context.accounts[self.cursor_pos.0][self.cursor_pos.1]
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.as_ref()
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.unwrap();
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self.length = mailbox.threads.len();
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let mut content = CellBuffer::new(MAX_COLS, self.length + 1, Cell::with_char(' '));
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if self.length == 0 {
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write_string_to_grid(
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&format!("Folder `{}` is empty.", mailbox.folder.name()),
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&mut content,
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Color::Default,
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Color::Default,
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((0, 0), (MAX_COLS - 1, 0)),
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true,
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);
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self.content = content;
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return;
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}
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// TODO: Fix the threaded hell and refactor stuff into seperate functions and/or modules.
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let mut indentations: Vec<bool> = Vec::with_capacity(6);
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let mut thread_idx = 0; // needed for alternate thread colors
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/* Draw threaded view. */
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let mut local_collection: Vec<usize> = mailbox.threaded_collection.clone();
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let threads: &Vec<Container> = &mailbox.threads;
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local_collection.sort_by(|a, b| match self.sort {
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(SortField::Date, SortOrder::Desc) => {
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mailbox.thread(*b).date().cmp(&mailbox.thread(*a).date())
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}
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(SortField::Date, SortOrder::Asc) => {
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mailbox.thread(*a).date().cmp(&mailbox.thread(*b).date())
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}
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(SortField::Subject, SortOrder::Desc) => {
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let a = mailbox.thread(*a);
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let b = mailbox.thread(*b);
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let ma = &mailbox.collection[*a.message().as_ref().unwrap()];
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let mb = &mailbox.collection[*b.message().as_ref().unwrap()];
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ma.subject().cmp(&mb.subject())
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}
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(SortField::Subject, SortOrder::Asc) => {
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let a = mailbox.thread(*a);
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let b = mailbox.thread(*b);
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let ma = &mailbox.collection[*a.message().as_ref().unwrap()];
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let mb = &mailbox.collection[*b.message().as_ref().unwrap()];
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mb.subject().cmp(&ma.subject())
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}
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});
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let mut iter = local_collection.iter().enumerate().peekable();
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let len = mailbox
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.threaded_collection
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.len()
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.to_string()
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.chars()
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.count();
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/* This is just a desugared for loop so that we can use .peek() */
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while let Some((idx, i)) = iter.next() {
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let container = &threads[*i];
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let indentation = container.indentation();
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if indentation == 0 {
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thread_idx += 1;
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}
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assert!(container.has_message());
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match iter.peek() {
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Some(&(_, x)) if threads[*x].indentation() == indentation => {
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indentations.pop();
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indentations.push(true);
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}
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_ => {
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indentations.pop();
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indentations.push(false);
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}
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}
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if container.has_sibling() {
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indentations.pop();
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indentations.push(true);
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}
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let envelope: &Envelope = &mailbox.collection[container.message().unwrap()];
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let fg_color = if !envelope.is_seen() {
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Color::Byte(0)
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} else {
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Color::Default
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};
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let bg_color = if !envelope.is_seen() {
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Color::Byte(251)
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} else if thread_idx % 2 == 0 {
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Color::Byte(236)
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} else {
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Color::Default
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};
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let (x, _) = write_string_to_grid(
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&CompactMailListing::make_thread_entry(
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envelope,
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idx,
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indentation,
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container,
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&indentations,
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len,
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),
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&mut content,
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fg_color,
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bg_color,
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((0, idx), (MAX_COLS - 1, idx)),
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false,
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);
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for x in x..MAX_COLS {
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content[(x, idx)].set_ch(' ');
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content[(x, idx)].set_bg(bg_color);
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}
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match iter.peek() {
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Some(&(_, x)) if threads[*x].indentation() > indentation => {
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indentations.push(false);
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}
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Some(&(_, x)) if threads[*x].indentation() < indentation => {
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for _ in 0..(indentation - threads[*x].indentation()) {
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indentations.pop();
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}
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}
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_ => {}
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}
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}
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self.content = content;
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}
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fn highlight_line_self(&mut self, idx: usize, context: &Context) {
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let threaded = context.accounts[self.cursor_pos.0]
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.runtime_settings
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.threaded;
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let mailbox = &context.accounts[self.cursor_pos.0][self.cursor_pos.1]
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.as_ref()
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.unwrap();
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let envelope: &Envelope = if threaded {
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let i = mailbox.threaded_mail(idx);
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&mailbox.collection[i]
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} else {
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&mailbox.collection[idx]
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};
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let fg_color = if !envelope.is_seen() {
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Color::Byte(0)
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} else {
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Color::Default
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};
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let bg_color = if !envelope.is_seen() {
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Color::Byte(251)
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} else if idx % 2 == 0 {
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Color::Byte(236)
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} else {
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Color::Default
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};
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change_colors(
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&mut self.content,
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((0, idx), (MAX_COLS - 1, idx)),
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fg_color,
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bg_color,
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);
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}
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fn highlight_line(&self, grid: &mut CellBuffer, area: Area, idx: usize, context: &Context) {
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let threaded = context.accounts[self.cursor_pos.0]
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.runtime_settings
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.threaded;
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let mailbox = &context.accounts[self.cursor_pos.0][self.cursor_pos.1]
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.as_ref()
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.unwrap();
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let envelope: &Envelope = if threaded {
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let i = mailbox.threaded_mail(idx);
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&mailbox.collection[i]
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} else {
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&mailbox.collection[idx]
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};
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let fg_color = if !envelope.is_seen() {
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Color::Byte(0)
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} else {
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Color::Default
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};
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let bg_color = if self.cursor_pos.2 == idx {
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Color::Byte(246)
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} else if !envelope.is_seen() {
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Color::Byte(251)
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} else if idx % 2 == 0 {
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Color::Byte(236)
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} else {
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Color::Default
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};
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change_colors(grid, area, fg_color, bg_color);
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}
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/// Draw the list of `Envelope`s.
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fn draw_list(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
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if self.cursor_pos.1 != self.new_cursor_pos.1 {
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self.refresh_mailbox(context);
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}
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let upper_left = upper_left!(area);
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let bottom_right = bottom_right!(area);
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if self.length == 0 {
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clear_area(grid, area);
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copy_area(grid, &self.content, area, ((0, 0), (MAX_COLS - 1, 0)));
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context.dirty_areas.push_back(area);
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return;
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}
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let rows = get_y(bottom_right) - get_y(upper_left) + 1;
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let prev_page_no = (self.cursor_pos.2).wrapping_div(rows);
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let page_no = (self.new_cursor_pos.2).wrapping_div(rows);
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let top_idx = page_no * rows;
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/* If cursor position has changed, remove the highlight from the previous position and
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* apply it in the new one. */
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if self.cursor_pos.2 != self.new_cursor_pos.2 && prev_page_no == page_no {
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let old_cursor_pos = self.cursor_pos;
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self.cursor_pos = self.new_cursor_pos;
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for idx in &[old_cursor_pos.2, self.new_cursor_pos.2] {
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if *idx >= self.length {
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continue; //bounds check
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}
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let new_area = (
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set_y(upper_left, get_y(upper_left) + (*idx % rows)),
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set_y(bottom_right, get_y(upper_left) + (*idx % rows)),
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);
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self.highlight_line(grid, new_area, *idx, context);
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context.dirty_areas.push_back(new_area);
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}
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return;
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} else if self.cursor_pos != self.new_cursor_pos {
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self.cursor_pos = self.new_cursor_pos;
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}
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/* Page_no has changed, so draw new page */
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copy_area(
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grid,
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&self.content,
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area,
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((0, top_idx), (MAX_COLS - 1, self.length)),
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);
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self.highlight_line(
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grid,
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(
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set_y(upper_left, get_y(upper_left) + (self.cursor_pos.2 % rows)),
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set_y(bottom_right, get_y(upper_left) + (self.cursor_pos.2 % rows)),
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),
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self.cursor_pos.2,
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context,
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);
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context.dirty_areas.push_back(area);
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}
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fn make_thread_entry(
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envelope: &Envelope,
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idx: usize,
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indent: usize,
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container: &Container,
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indentations: &[bool],
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idx_width: usize,
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) -> String {
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let has_sibling = container.has_sibling();
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let has_parent = container.has_parent();
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let show_subject = container.show_subject();
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let mut s = format!(
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"{}{}{} ",
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idx,
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" ".repeat(idx_width + 2 - (idx.to_string().chars().count())),
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CompactMailListing::format_date(&envelope)
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);
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for i in 0..indent {
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if indentations.len() > i && indentations[i] {
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s.push('│');
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} else {
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s.push(' ');
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}
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if i > 0 {
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s.push(' ');
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}
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}
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if indent > 0 {
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if has_sibling && has_parent {
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s.push('├');
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} else if has_sibling {
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s.push('┬');
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} else {
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s.push('└');
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}
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s.push('─');
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s.push('>');
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}
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if show_subject {
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s.push_str(&format!("{:.85}", envelope.subject()));
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}
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let attach_count = envelope.body().count_attachments();
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if attach_count > 1 {
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s.push_str(&format!(" {}∞ ", attach_count - 1));
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}
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s
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}
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fn format_date(envelope: &Envelope) -> String {
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let d = std::time::UNIX_EPOCH + std::time::Duration::from_secs(envelope.date());
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let now: std::time::Duration = std::time::SystemTime::now().duration_since(d).unwrap();
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match now.as_secs() {
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n if n < 10 * 60 * 60 => format!("{} hours ago{}", n / (60 * 60), " ".repeat(8)),
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n if n < 24 * 60 * 60 => format!("{} hours ago{}", n / (60 * 60), " ".repeat(7)),
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n if n < 4 * 24 * 60 * 60 => {
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format!("{} days ago{}", n / (24 * 60 * 60), " ".repeat(9))
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}
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_ => envelope.datetime().format("%Y-%m-%d %H:%M:%S").to_string(),
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}
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}
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}
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impl Component for CompactMailListing {
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fn draw(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
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if !self.unfocused {
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if !self.is_dirty() {
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return;
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}
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self.dirty = false;
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/* Draw the entire list */
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self.draw_list(grid, area, context);
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} else {
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let upper_left = upper_left!(area);
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let bottom_right = bottom_right!(area);
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if self.length == 0 && self.dirty {
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clear_area(grid, area);
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context.dirty_areas.push_back(area);
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}
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/* Render the mail body in a pager, basically copy what HSplit does */
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let total_rows = get_y(bottom_right) - get_y(upper_left);
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let pager_ratio = context.runtime_settings.pager.pager_ratio;
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let bottom_entity_rows = (pager_ratio * total_rows) / 100;
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if bottom_entity_rows > total_rows {
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clear_area(grid, area);
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context.dirty_areas.push_back(area);
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return;
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}
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/* Mark message as read */
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let idx = self.cursor_pos.2;
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let must_highlight = {
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if self.length == 0 {
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false
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} else {
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let threaded = context.accounts[self.cursor_pos.0]
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.runtime_settings
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.threaded;
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let mailbox = &mut context.accounts[self.cursor_pos.0][self.cursor_pos.1]
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.as_mut()
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.unwrap();
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let envelope: &mut Envelope = if threaded {
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let i = mailbox.threaded_mail(idx);
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&mut mailbox.collection[i]
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} else {
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&mut mailbox.collection[idx]
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};
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if !envelope.is_seen() {
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envelope.set_seen().unwrap();
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true
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} else {
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false
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}
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}
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};
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if must_highlight {
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self.highlight_line_self(idx, context);
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}
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let mid = get_y(upper_left) + total_rows - bottom_entity_rows;
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self.draw_list(
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grid,
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(
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upper_left,
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(get_x(bottom_right), get_y(upper_left) + mid - 1),
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),
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context,
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);
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if self.length == 0 {
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self.dirty = false;
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return;
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}
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{
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/* TODO: Move the box drawing business in separate functions */
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if get_x(upper_left) > 0 && grid[(get_x(upper_left) - 1, mid)].ch() == VERT_BOUNDARY
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{
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grid[(get_x(upper_left) - 1, mid)].set_ch(LIGHT_VERTICAL_AND_RIGHT);
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}
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for i in get_x(upper_left)..=get_x(bottom_right) {
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grid[(i, mid)].set_ch('─');
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}
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context
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.dirty_areas
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.push_back((set_y(upper_left, mid), set_y(bottom_right, mid)));
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}
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// TODO: Make headers view configurable
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if !self.dirty {
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if let Some(v) = self.view.as_mut() {
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v.draw(grid, (set_y(upper_left, mid + 1), bottom_right), context);
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}
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return;
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}
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self.view = Some(ThreadView::new(Vec::new()));
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self.view.as_mut().unwrap().draw(
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grid,
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(set_y(upper_left, mid + 1), bottom_right),
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context,
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);
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self.dirty = false;
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}
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}
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fn process_event(&mut self, event: &UIEvent, context: &mut Context) {
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match event.event_type {
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UIEventType::Input(Key::Up) => {
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if self.cursor_pos.2 > 0 {
|
|
self.new_cursor_pos.2 -= 1;
|
|
self.dirty = true;
|
|
}
|
|
}
|
|
UIEventType::Input(Key::Down) => {
|
|
if self.length > 0 && self.new_cursor_pos.2 < self.length - 1 {
|
|
self.new_cursor_pos.2 += 1;
|
|
self.dirty = true;
|
|
}
|
|
}
|
|
UIEventType::Input(Key::Char('\n')) if !self.unfocused => {
|
|
self.unfocused = true;
|
|
self.dirty = true;
|
|
}
|
|
UIEventType::Input(Key::Char('m')) if !self.unfocused => {
|
|
use std::process::{Command, Stdio};
|
|
/* Kill input thread so that spawned command can be sole receiver of stdin */
|
|
{
|
|
/* I tried thread::park() here but for some reason it never blocked and always
|
|
* returned. Spinlocks are also useless because you have to keep the mutex
|
|
* guard alive til the child process exits, which requires some effort.
|
|
*
|
|
* The only problem with this approach is tht the user has to send some input
|
|
* in order for the input-thread to wake up and realise it should kill itself.
|
|
*
|
|
* I tried writing to stdin/tty manually but for some reason rustty didn't
|
|
* acknowledge it.
|
|
*/
|
|
|
|
/*
|
|
* tx sends to input-thread and it kills itself.
|
|
*/
|
|
let tx = context.input_thread();
|
|
tx.send(true);
|
|
}
|
|
let mut f = create_temp_file(&new_draft(context), None);
|
|
//let mut f = Box::new(std::fs::File::create(&dir).unwrap());
|
|
|
|
// TODO: check exit status
|
|
let mut output = Command::new("vim")
|
|
.arg("+/^$")
|
|
.arg(&f.path())
|
|
.stdin(Stdio::inherit())
|
|
.stdout(Stdio::inherit())
|
|
.spawn()
|
|
.expect("failed to execute process");
|
|
|
|
/*
|
|
* Main loop will wait on children and when they reap them the loop spawns a new
|
|
* input-thread
|
|
*/
|
|
context.replies.push_back(UIEvent {
|
|
id: 0,
|
|
event_type: UIEventType::Fork(ForkType::NewDraft(f, output)),
|
|
});
|
|
context.replies.push_back(UIEvent {
|
|
id: 0,
|
|
event_type: UIEventType::ChangeMode(UIMode::Fork),
|
|
});
|
|
return;
|
|
}
|
|
UIEventType::Input(Key::Char('i')) if self.unfocused => {
|
|
self.unfocused = false;
|
|
self.dirty = true;
|
|
self.view = None;
|
|
}
|
|
UIEventType::Input(Key::Char(k @ 'J')) | UIEventType::Input(Key::Char(k @ 'K')) => {
|
|
let folder_length = context.accounts[self.cursor_pos.0].len();
|
|
let accounts_length = context.accounts.len();
|
|
match k {
|
|
'J' if folder_length > 0 => {
|
|
if self.new_cursor_pos.1 < folder_length - 1 {
|
|
self.new_cursor_pos.1 = self.cursor_pos.1 + 1;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
} else if accounts_length > 0 && self.new_cursor_pos.0 < accounts_length - 1
|
|
{
|
|
self.new_cursor_pos.0 = self.cursor_pos.0 + 1;
|
|
self.new_cursor_pos.1 = 0;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
}
|
|
'K' => {
|
|
if self.cursor_pos.1 > 0 {
|
|
self.new_cursor_pos.1 = self.cursor_pos.1 - 1;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
} else if self.cursor_pos.0 > 0 {
|
|
self.new_cursor_pos.0 = self.cursor_pos.0 - 1;
|
|
self.new_cursor_pos.1 = 0;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
UIEventType::Input(Key::Char(k @ 'h')) | UIEventType::Input(Key::Char(k @ 'l')) => {
|
|
let accounts_length = context.accounts.len();
|
|
match k {
|
|
'h' if accounts_length > 0 && self.new_cursor_pos.0 < accounts_length - 1 => {
|
|
self.new_cursor_pos.0 = self.cursor_pos.0 + 1;
|
|
self.new_cursor_pos.1 = 0;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
'l' if self.cursor_pos.0 > 0 => {
|
|
self.new_cursor_pos.0 = self.cursor_pos.0 - 1;
|
|
self.new_cursor_pos.1 = 0;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
UIEventType::RefreshMailbox(_) => {
|
|
self.dirty = true;
|
|
self.view = None;
|
|
}
|
|
UIEventType::MailboxUpdate((ref idxa, ref idxf)) => {
|
|
if *idxa == self.new_cursor_pos.1 && *idxf == self.new_cursor_pos.0 {
|
|
self.refresh_mailbox(context);
|
|
self.dirty = true;
|
|
}
|
|
}
|
|
UIEventType::ChangeMode(UIMode::Normal) => {
|
|
self.dirty = true;
|
|
}
|
|
UIEventType::Resize => {
|
|
self.dirty = true;
|
|
}
|
|
UIEventType::Action(ref action) => match action {
|
|
Action::MailListing(MailListingAction::ToggleThreaded) => {
|
|
context.accounts[self.cursor_pos.0]
|
|
.runtime_settings
|
|
.threaded = !context.accounts[self.cursor_pos.0]
|
|
.runtime_settings
|
|
.threaded;
|
|
self.refresh_mailbox(context);
|
|
self.dirty = true;
|
|
return;
|
|
}
|
|
Action::ViewMailbox(idx) => {
|
|
self.new_cursor_pos.1 = *idx;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return;
|
|
}
|
|
Action::Sort(field, order) => {
|
|
self.sort = (field.clone(), order.clone());
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return;
|
|
}
|
|
_ => {}
|
|
},
|
|
_ => {}
|
|
}
|
|
if let Some(ref mut v) = self.view {
|
|
v.process_event(event, context);
|
|
}
|
|
}
|
|
fn is_dirty(&self) -> bool {
|
|
self.dirty || self.view.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
|
|
}
|
|
fn set_dirty(&mut self) {
|
|
self.dirty = true;
|
|
}
|
|
}
|