564 lines
20 KiB
Rust
564 lines
20 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 `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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}
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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(e: &Envelope, idx: usize) -> String {
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format!(
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"{} {} {}",
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idx,
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&e.datetime().format("%Y-%m-%d %H:%M:%S").to_string(),
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e.subject()
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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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}
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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 context.accounts[self.cursor_pos.0]
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.status(self.cursor_pos.1)
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.is_ok()
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{
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break;
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}
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}
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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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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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// Populate `CellBuffer` with every entry.
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let mut idx = 0;
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for y in 0..=self.length {
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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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self.local_collection = mailbox.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 = &mailbox.collection[a];
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let mb = &mailbox.collection[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 = &mailbox.collection[a];
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let mb = &mailbox.collection[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 = &mailbox.collection[a];
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let mb = &mailbox.collection[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 = &mailbox.collection[a];
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let mb = &mailbox.collection[b];
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mb.subject().cmp(&ma.subject())
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}
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});
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let envelope: &Envelope = &mailbox.collection[&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, y) = write_string_to_grid(
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&PlainListing::make_entry_string(envelope, idx),
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&mut self.content,
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fg_color,
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bg_color,
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((0, y), (MAX_COLS - 1, y)),
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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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idx += 1;
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}
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}
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fn highlight_line_self(&mut self, idx: usize, context: &Context) {
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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 = &mailbox.collection[&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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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 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 = &mailbox.collection[&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 {
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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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}
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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_highlight = {
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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 (hash, is_seen) = {
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let mailbox = &mut account[self.cursor_pos.1].as_mut().unwrap();
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let envelope: &mut Envelope = &mut mailbox
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.collection
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.entry(self.local_collection[idx])
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.or_default();
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(envelope.hash(), envelope.is_seen())
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};
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if !is_seen {
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let folder_hash = {
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let mailbox = &mut account[self.cursor_pos.1].as_mut().unwrap();
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mailbox.folder.hash()
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};
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let op = {
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let backend = &account.backend;
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backend.operation(hash, folder_hash)
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};
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let mailbox = &mut account[self.cursor_pos.1].as_mut().unwrap();
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let envelope: &mut Envelope = &mut mailbox
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.collection
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.entry(self.local_collection[idx])
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.or_default();
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envelope.set_seen(op).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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{
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let coordinates = self.cursor_pos;
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let coordinates = (
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coordinates.0,
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coordinates.1,
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self.local_collection[self.cursor_pos.2],
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);
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self.view = Some(MailView::new(coordinates, None, None));
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}
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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: &mut UIEvent, context: &mut Context) -> bool {
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if let Some(ref mut v) = self.view {
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if v.process_event(event, context) {
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return true;
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}
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}
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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 {
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self.new_cursor_pos.2 -= 1;
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self.dirty = true;
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}
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return true;
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}
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UIEventType::Input(Key::Down) => {
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if self.length > 0 && self.new_cursor_pos.2 < self.length - 1 {
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self.new_cursor_pos.2 += 1;
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self.dirty = true;
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}
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return true;
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}
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UIEventType::Input(Key::Char('\n')) if !self.unfocused => {
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self.unfocused = true;
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self.dirty = true;
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return true;
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}
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UIEventType::Input(Key::Char('m')) if !self.unfocused => {
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context.replies.push_back(UIEvent {
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id: 0,
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event_type: UIEventType::Action(Tab(NewDraft)),
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});
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return true;
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}
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UIEventType::Input(Key::Char('i')) if self.unfocused => {
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self.unfocused = false;
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self.dirty = true;
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self.view = None;
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return true;
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}
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UIEventType::Input(Key::Char(k @ 'J')) | UIEventType::Input(Key::Char(k @ 'K')) => {
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let folder_length = context.accounts[self.cursor_pos.0].len();
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let accounts_length = context.accounts.len();
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match k {
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'J' if folder_length > 0 => {
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if self.new_cursor_pos.1 < folder_length - 1 {
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self.new_cursor_pos.1 = self.cursor_pos.1 + 1;
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self.dirty = true;
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self.refresh_mailbox(context);
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} else if accounts_length > 0 && self.new_cursor_pos.0 < accounts_length - 1
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{
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self.new_cursor_pos.0 = self.cursor_pos.0 + 1;
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self.new_cursor_pos.1 = 0;
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self.dirty = true;
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self.refresh_mailbox(context);
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}
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}
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'K' => {
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if self.cursor_pos.1 > 0 {
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self.new_cursor_pos.1 = self.cursor_pos.1 - 1;
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self.dirty = true;
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self.refresh_mailbox(context);
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} else if self.cursor_pos.0 > 0 {
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self.new_cursor_pos.0 = self.cursor_pos.0 - 1;
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self.new_cursor_pos.1 = 0;
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self.dirty = true;
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self.refresh_mailbox(context);
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}
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}
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_ => {}
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}
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return true;
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}
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UIEventType::Input(Key::Char(k @ 'h')) | UIEventType::Input(Key::Char(k @ 'l')) => {
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let accounts_length = context.accounts.len();
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match k {
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'h' if accounts_length > 0 && self.new_cursor_pos.0 < accounts_length - 1 => {
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self.new_cursor_pos.0 = self.cursor_pos.0 + 1;
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self.new_cursor_pos.1 = 0;
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self.dirty = true;
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self.refresh_mailbox(context);
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}
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'l' if self.cursor_pos.0 > 0 => {
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self.new_cursor_pos.0 = self.cursor_pos.0 - 1;
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self.new_cursor_pos.1 = 0;
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self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
_ => {}
|
|
}
|
|
return true;
|
|
}
|
|
UIEventType::RefreshMailbox(_) => {
|
|
self.dirty = true;
|
|
self.view = None;
|
|
}
|
|
UIEventType::MailboxUpdate((ref idxa, ref idxf)) => {
|
|
if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 {
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
}
|
|
}
|
|
UIEventType::ChangeMode(UIMode::Normal) => {
|
|
self.dirty = true;
|
|
}
|
|
UIEventType::Resize => {
|
|
self.dirty = true;
|
|
}
|
|
UIEventType::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) => {
|
|
eprintln!("SubSort {:?} , {:?}", field, order);
|
|
self.subsort = (*field, *order);
|
|
self.dirty = true;
|
|
self.refresh_mailbox(context);
|
|
return true;
|
|
}
|
|
Action::Sort(field, order) => {
|
|
eprintln!("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;
|
|
}
|
|
}
|