668 lines
23 KiB
Rust
668 lines
23 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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use std::cmp;
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use std::ops::{Deref, DerefMut};
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const MAX_COLS: usize = 500;
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macro_rules! address_list {
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(($name:expr) as comma_sep_list) => {{
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let mut ret: String =
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$name
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.into_iter()
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.fold(String::new(), |mut s: String, n: &Address| {
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s.extend(n.to_string().chars());
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s.push_str(", ");
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s
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});
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ret.pop();
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ret.pop();
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ret
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}};
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}
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macro_rules! column_str {
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(
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struct $name:ident(String)) => {
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pub struct $name(String);
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impl Deref for $name {
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type Target = String;
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fn deref(&self) -> &String {
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&self.0
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}
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}
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impl DerefMut for $name {
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fn deref_mut(&mut self) -> &mut String {
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&mut self.0
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}
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}
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};
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}
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column_str!(struct IndexNoString(String));
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column_str!(struct DateString(String));
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column_str!(struct FromString(String));
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column_str!(struct SubjectString(String));
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/// A list of all mail (`Envelope`s) in a `Mailbox`. On `\n` it opens the `Envelope` content in a
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/// `MailView`.
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#[derive(Debug)]
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pub struct PlainListing {
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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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local_collection: Vec<EnvelopeHash>,
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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<MailView>,
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movement: Option<PageMovement>,
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id: ComponentId,
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}
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impl ListingTrait for PlainListing {
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fn coordinates(&self) -> (usize, usize, Option<EnvelopeHash>) {
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(self.cursor_pos.0, self.cursor_pos.1, None)
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}
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fn set_coordinates(&mut self, coordinates: (usize, usize, Option<EnvelopeHash>)) {
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self.new_cursor_pos = (coordinates.0, coordinates.1, 0);
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}
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}
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impl Default for PlainListing {
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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 PlainListing {
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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 PlainListing {
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/// Helper function to format entry strings for PlainListing */
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/* TODO: Make this configurable */
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fn make_entry_string(
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e: &Envelope,
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idx: usize,
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) -> (IndexNoString, FromString, DateString, SubjectString) {
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(
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IndexNoString(idx.to_string()),
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FromString(address_list!((e.from()) as comma_sep_list)),
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DateString(PlainListing::format_date(e)),
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SubjectString(format!(
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"{}{}",
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e.subject(),
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if e.has_attachments() { " 📎" } else { "" },
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)),
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)
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}
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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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PlainListing {
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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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local_collection: Vec::new(),
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sort: (Default::default(), Default::default()),
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subsort: (Default::default(), Default::default()),
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content,
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dirty: true,
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unfocused: false,
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view: None,
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movement: None,
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id: ComponentId::new_v4(),
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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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if !(self.cursor_pos.0 == self.new_cursor_pos.0
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&& self.cursor_pos.1 == self.new_cursor_pos.1)
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{
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self.cursor_pos.2 = 0;
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self.new_cursor_pos.2 = 0;
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}
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self.cursor_pos.0 = self.new_cursor_pos.0;
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self.cursor_pos.1 = self.new_cursor_pos.1;
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let folder_hash = context.accounts[self.cursor_pos.0].folders_order[self.cursor_pos.1];
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// Inform State that we changed the current folder view.
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context
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.replies
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.push_back(UIEvent::RefreshMailbox((self.cursor_pos.0, folder_hash)));
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// Get mailbox as a reference.
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//
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match context.accounts[self.cursor_pos.0].status(folder_hash) {
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Ok(_) => {}
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Err(_) => {
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self.content = CellBuffer::new(MAX_COLS, 1, Cell::with_char(' '));
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self.length = 0;
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write_string_to_grid(
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"Loading.",
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&mut self.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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false,
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);
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return;
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}
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}
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let account = &context.accounts[self.cursor_pos.0];
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let mailbox = &account[self.cursor_pos.1].as_ref().unwrap();
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self.length = mailbox.len();
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self.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 self.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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return;
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}
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self.local_collection = account.collection.keys().cloned().collect();
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let sort = self.sort;
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self.local_collection.sort_by(|a, b| match sort {
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(SortField::Date, SortOrder::Desc) => {
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let ma = &account.get_env(a);
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let mb = &account.get_env(b);
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mb.date().cmp(&ma.date())
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}
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(SortField::Date, SortOrder::Asc) => {
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let ma = &account.get_env(a);
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let mb = &account.get_env(b);
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ma.date().cmp(&mb.date())
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}
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(SortField::Subject, SortOrder::Desc) => {
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let ma = &account.get_env(a);
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let mb = &account.get_env(b);
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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 ma = &account.get_env(a);
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let mb = &account.get_env(b);
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mb.subject().cmp(&ma.subject())
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}
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});
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let mut rows = Vec::with_capacity(1024);
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let mut min_width = (0, 0, 0);
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let widths: (usize, usize, usize);
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for idx in 0..self.local_collection.len() {
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let envelope: &Envelope = &account.get_env(&self.local_collection[idx]);
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let strings = PlainListing::make_entry_string(envelope, idx);
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min_width.0 = cmp::max(min_width.0, strings.0.len()); /* index */
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min_width.1 = cmp::max(min_width.1, strings.2.split_graphemes().len()); /* date */
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min_width.2 = cmp::max(min_width.2, strings.3.split_graphemes().len()); /* subject */
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rows.push(strings);
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}
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let column_sep: usize = if MAX_COLS >= min_width.0 + min_width.1 + min_width.2 {
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widths = min_width;
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2
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} else {
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let width = MAX_COLS - 3 - min_width.0;
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widths = (
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min_width.0,
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cmp::min(min_width.1, width / 3),
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cmp::min(min_width.2, width / 3),
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);
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1
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};
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// Populate `CellBuffer` with every entry.
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for (idx, y) in (0..=self.length).enumerate() {
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if idx >= self.length {
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/* No more entries left, so fill the rest of the area with empty space */
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clear_area(&mut self.content, ((0, y), (MAX_COLS - 1, self.length)));
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break;
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}
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/* Write an entire line for each envelope entry. */
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let envelope: &Envelope = &account.get_env(&self.local_collection[idx]);
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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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let (x, _) = write_string_to_grid(
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&rows[idx].0,
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&mut self.content,
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fg_color,
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bg_color,
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((0, idx), (widths.0, idx)),
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false,
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);
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for x in x..=widths.0 + column_sep {
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self.content[(x, idx)].set_bg(bg_color);
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}
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let mut _x = widths.0 + column_sep;
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let (x, _) = write_string_to_grid(
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&rows[idx].2,
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&mut self.content,
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fg_color,
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bg_color,
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((_x, idx), (widths.1 + _x, idx)),
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false,
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);
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_x += widths.1 + column_sep + 1;
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for x in x.._x {
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self.content[(x, idx)].set_bg(bg_color);
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}
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let (x, _) = write_string_to_grid(
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&rows[idx].1,
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&mut self.content,
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fg_color,
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bg_color,
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((_x, idx), (widths.1 + _x, idx)),
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false,
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);
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_x += widths.1 + column_sep + 2;
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for x in x.._x {
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self.content[(x, idx)].set_bg(bg_color);
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}
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let (x, _) = write_string_to_grid(
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&rows[idx].3,
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&mut self.content,
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fg_color,
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bg_color,
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((_x, idx), (widths.2 + _x, idx)),
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false,
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);
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for x in x..MAX_COLS {
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self.content[(x, y)].set_ch(' ');
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self.content[(x, y)].set_bg(bg_color);
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}
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}
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}
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fn unhighlight_line(&mut self, idx: usize) {
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let fg_color = Color::Default;
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let bg_color = 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 account = &context.accounts[self.cursor_pos.0];
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let envelope: &Envelope = &account.get_env(&self.local_collection[idx]);
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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 || self.cursor_pos.0 != self.new_cursor_pos.0
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{
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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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if let Some(mvm) = self.movement.take() {
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match mvm {
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PageMovement::PageUp => {
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self.new_cursor_pos.2 = self.new_cursor_pos.2.saturating_sub(rows);
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}
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PageMovement::PageDown => {
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if self.new_cursor_pos.2 + rows + 1 < self.length {
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self.new_cursor_pos.2 += rows;
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} else {
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self.new_cursor_pos.2 = (self.length / rows) * rows;
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}
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}
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PageMovement::Home => {
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self.new_cursor_pos.2 = 0;
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}
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PageMovement::End => {
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self.new_cursor_pos.2 = (self.length / rows) * rows;
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}
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}
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}
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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 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()
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.duration_since(d)
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.unwrap_or_else(|_| std::time::Duration::new(std::u64::MAX, 0));
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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 PlainListing {
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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_unhighlight = {
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if self.length == 0 {
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false
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} else {
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let account = &mut context.accounts[self.cursor_pos.0];
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let envelope: &mut Envelope =
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&mut account.get_env_mut(&self.local_collection[idx]);
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!envelope.is_seen()
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}
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};
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if must_unhighlight {
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self.unhighlight_line(idx);
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}
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|
let mid = get_y(upper_left) + total_rows - bottom_entity_rows;
|
|
self.draw_list(
|
|
grid,
|
|
(
|
|
upper_left,
|
|
(get_x(bottom_right), get_y(upper_left) + mid - 1),
|
|
),
|
|
context,
|
|
);
|
|
if self.length == 0 {
|
|
self.dirty = false;
|
|
return;
|
|
}
|
|
{
|
|
/* TODO: Move the box drawing business in separate functions */
|
|
if get_x(upper_left) > 0 && grid[(get_x(upper_left) - 1, mid)].ch() == VERT_BOUNDARY
|
|
{
|
|
grid[(get_x(upper_left) - 1, mid)].set_ch(LIGHT_VERTICAL_AND_RIGHT);
|
|
}
|
|
|
|
for i in get_x(upper_left)..=get_x(bottom_right) {
|
|
grid[(i, mid)].set_ch('─');
|
|
}
|
|
context
|
|
.dirty_areas
|
|
.push_back((set_y(upper_left, mid), set_y(bottom_right, mid)));
|
|
}
|
|
// TODO: Make headers view configurable
|
|
|
|
if !self.dirty {
|
|
if let Some(v) = self.view.as_mut() {
|
|
v.draw(grid, (set_y(upper_left, mid + 1), bottom_right), context);
|
|
}
|
|
return;
|
|
}
|
|
{
|
|
let coordinates = self.cursor_pos;
|
|
let coordinates = (
|
|
coordinates.0,
|
|
coordinates.1,
|
|
self.local_collection[self.cursor_pos.2],
|
|
);
|
|
self.view = Some(MailView::new(coordinates, None, None));
|
|
}
|
|
self.view.as_mut().unwrap().draw(
|
|
grid,
|
|
(set_y(upper_left, mid + 1), bottom_right),
|
|
context,
|
|
);
|
|
self.dirty = false;
|
|
}
|
|
}
|
|
fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
|
|
if let Some(ref mut v) = self.view {
|
|
if v.process_event(event, context) {
|
|
return true;
|
|
}
|
|
}
|
|
match *event {
|
|
UIEvent::Input(Key::Up) => {
|
|
if self.cursor_pos.2 > 0 {
|
|
self.new_cursor_pos.2 -= 1;
|
|
self.dirty = true;
|
|
}
|
|
return true;
|
|
}
|
|
UIEvent::Input(Key::Down) => {
|
|
if self.length > 0 && self.new_cursor_pos.2 < self.length - 1 {
|
|
self.new_cursor_pos.2 += 1;
|
|
self.dirty = true;
|
|
}
|
|
return true;
|
|
}
|
|
UIEvent::Input(ref key) if *key == Key::PageUp => {
|
|
self.movement = Some(PageMovement::PageUp);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::Input(ref key) if *key == Key::PageDown => {
|
|
self.movement = Some(PageMovement::PageDown);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::Input(ref key) if *key == Key::Home => {
|
|
self.movement = Some(PageMovement::Home);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::Input(ref key) if *key == Key::End => {
|
|
self.movement = Some(PageMovement::End);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::Input(Key::Char('\n')) if !self.unfocused => {
|
|
self.unfocused = true;
|
|
self.dirty = true;
|
|
return true;
|
|
}
|
|
UIEvent::Input(Key::Char('i')) if self.unfocused => {
|
|
self.unfocused = false;
|
|
self.dirty = true;
|
|
self.view = None;
|
|
return true;
|
|
}
|
|
UIEvent::RefreshMailbox(_) => {
|
|
self.dirty = true;
|
|
self.view = None;
|
|
}
|
|
UIEvent::MailboxUpdate((ref idxa, ref idxf))
|
|
if (*idxa, *idxf)
|
|
== (
|
|
self.new_cursor_pos.0,
|
|
context.accounts[self.new_cursor_pos.0].folders_order
|
|
[self.new_cursor_pos.1],
|
|
) =>
|
|
{
|
|
self.refresh_mailbox(context);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::StartupCheck(ref f)
|
|
if *f
|
|
== context.accounts[self.new_cursor_pos.0].folders_order
|
|
[self.new_cursor_pos.1] =>
|
|
{
|
|
self.refresh_mailbox(context);
|
|
self.set_dirty();
|
|
}
|
|
UIEvent::ChangeMode(UIMode::Normal) => {
|
|
self.dirty = true;
|
|
}
|
|
UIEvent::Resize => {
|
|
self.dirty = true;
|
|
}
|
|
UIEvent::Action(ref action) => match action {
|
|
Action::ViewMailbox(idx) => {
|
|
self.new_cursor_pos.1 = *idx;
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return true;
|
|
}
|
|
Action::SubSort(field, order) => {
|
|
debug!("SubSort {:?} , {:?}", field, order);
|
|
self.subsort = (*field, *order);
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return true;
|
|
}
|
|
Action::Sort(field, order) => {
|
|
debug!("Sort {:?} , {:?}", field, order);
|
|
self.sort = (*field, *order);
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return true;
|
|
}
|
|
_ => {}
|
|
},
|
|
_ => {}
|
|
}
|
|
false
|
|
}
|
|
fn is_dirty(&self) -> bool {
|
|
self.dirty || self.view.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
|
|
}
|
|
fn set_dirty(&mut self) {
|
|
if let Some(p) = self.view.as_mut() {
|
|
p.set_dirty();
|
|
};
|
|
self.dirty = true;
|
|
}
|
|
|
|
fn id(&self) -> ComponentId {
|
|
self.id
|
|
}
|
|
fn set_id(&mut self, id: ComponentId) {
|
|
self.id = id;
|
|
}
|
|
}
|