579 lines
23 KiB
Rust
579 lines
23 KiB
Rust
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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/// `Pager`.
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pub struct MailListing {
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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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// TODO: sorting
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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.pager` exists or not.
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unfocused: bool,
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pager: Option<Pager>,
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}
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impl MailListing {
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/// Helper function to format entry strings for MailListing */
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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!("{} {} {:.85}",idx,&e.datetime().format("%Y-%m-%d %H:%M:%S").to_string(),e.subject())
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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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MailListing {
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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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content: content,
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dirty: true,
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unfocused: false,
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pager: 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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let threaded = context.accounts[self.cursor_pos.0].settings.threaded;
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// Get mailbox as a reference.
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let mailbox = &mut context.accounts[self.cursor_pos.0][self.cursor_pos.1].as_ref().unwrap().as_ref().unwrap();
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// Inform State that we changed the current folder view.
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context.replies.push_back(UIEvent { id: 0, event_type: UIEventType::RefreshMailbox((self.cursor_pos.0, self.cursor_pos.1)) });
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self.length = if threaded {
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mailbox.threaded_collection.len()
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} else {
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mailbox.len()
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};
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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(&format!("Folder `{}` is empty.",
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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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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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if threaded {
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let mut indentations: Vec<bool> = Vec::with_capacity(6);
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/* Draw threaded view. */
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let mut iter = mailbox
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.threaded_collection
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.iter()
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.enumerate()
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.peekable();
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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 = mailbox.thread(*i);
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let indentation = container.indentation();
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assert_eq!(container.has_message(), true);
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match iter.peek() {
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Some(&(_, x))
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if mailbox.thread(*x).indentation() == indentation =>
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{
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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 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(&MailListing::make_thread_entry(envelope, idx, indentation, container, &indentations),
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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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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))
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if mailbox.thread(*x).indentation() > indentation =>
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{
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indentations.push(false);
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}
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Some(&(_, x))
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if mailbox.thread(*x).indentation() < indentation =>
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{
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for _ in 0..(indentation - mailbox.thread(*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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} else {
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// Populate `CellBuffer` with every entry.
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// TODO: Lazy load?
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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 content,
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((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 = &mailbox.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(&MailListing::make_entry_string(envelope, idx),
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&mut 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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for x in x..MAX_COLS {
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content[(x,y)].set_ch(' ');
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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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self.content = content;
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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].settings.threaded;
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let mailbox = &context.accounts[self.cursor_pos.0][self.cursor_pos.1].as_ref().unwrap().as_ref().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 {
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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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};
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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].iter() {
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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 = (set_y(upper_left, get_y(upper_left)+(*idx % rows)), set_y(bottom_right, get_y(upper_left) + (*idx % rows)));
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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(grid, &self.content, area, ((0, top_idx), (MAX_COLS - 1, self.length)));
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self.highlight_line(grid, (set_y(upper_left, get_y(upper_left)+(self.cursor_pos.2 % rows)), set_y(bottom_right, get_y(upper_left) + (self.cursor_pos.2 % rows))), self.cursor_pos.2, context);
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context.dirty_areas.push_back(area);
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}
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/// Create a pager for the `Envelope` currently under the cursor.
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fn draw_mail_view(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
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{
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let threaded = context.accounts[self.cursor_pos.0].settings.threaded;
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let mailbox = &mut context.accounts[self.cursor_pos.0][self.cursor_pos.1].as_ref().unwrap().as_ref().unwrap();
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let envelope: &Envelope = if threaded {
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let i = mailbox.threaded_mail(self.cursor_pos.2);
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&mailbox.collection[i]
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} else {
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&mailbox.collection[self.cursor_pos.2]
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};
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let pager_filter = context.settings.pager.filter.clone();
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self.pager = Some(Pager::new(&envelope, pager_filter));
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}
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self.pager.as_mut().map(|p| p.draw(grid, area, context));
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}
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fn make_thread_entry(envelope: &Envelope, idx: usize, indent: usize,
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container: &Container, indentations: &Vec<bool>) -> 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!("{} {} ", idx, &envelope.datetime().format("%Y-%m-%d %H:%M:%S").to_string());
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for i in 0..indent {
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if indentations.len() > i && indentations[i]
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{
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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('â””');
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}
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s.push('─'); s.push('>');
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}
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s.push_str(&format!(" {}∞ ", envelope.body().count_attachments()));
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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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s
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}
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}
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impl Component for MailListing {
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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,
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area,
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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.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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let mid = get_y(upper_left) + total_rows - bottom_entity_rows;
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self.draw_list(grid,
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(upper_left, (get_x(bottom_right), get_y(upper_left)+ mid-1)),
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context);
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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 {
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if grid[(get_x(upper_left) - 1, mid)].ch() == VERT_BOUNDARY {
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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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}
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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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}
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// TODO: Make headers view configurable
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/* Draw header */
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let y =
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{
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let threaded = context.accounts[self.cursor_pos.0].settings.threaded;
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let mailbox = &mut context.accounts[self.cursor_pos.0][self.cursor_pos.1].as_ref().unwrap().as_ref().unwrap();
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let envelope: &Envelope = if threaded {
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let i = mailbox.threaded_mail(self.cursor_pos.2);
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&mailbox.collection[i]
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} else {
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&mailbox.collection[self.cursor_pos.2]
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};
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let (x,y) = write_string_to_grid(&format!("Date: {}", envelope.date_as_str()),
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grid,
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Color::Byte(33),
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Color::Default,
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(set_y(upper_left, mid+1), bottom_right),
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true);
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for x in x..=get_x(bottom_right) {
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grid[(x, y)].set_ch(' ');
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grid[(x, y)].set_bg(Color::Default);
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grid[(x, y)].set_fg(Color::Default);
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}
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let (x,y) = write_string_to_grid(&format!("From: {}", envelope.from()),
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grid,
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Color::Byte(33),
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Color::Default,
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(set_y(upper_left, y+1), bottom_right),
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true);
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for x in x..=get_x(bottom_right) {
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grid[(x, y)].set_ch(' ');
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grid[(x, y)].set_bg(Color::Default);
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grid[(x, y)].set_fg(Color::Default);
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}
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let (x,y) = write_string_to_grid(&format!("To: {}", envelope.to()),
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grid,
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Color::Byte(33),
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Color::Default,
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(set_y(upper_left, y+1), bottom_right),
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true);
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for x in x..=get_x(bottom_right) {
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grid[(x, y)].set_ch(' ');
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grid[(x, y)].set_bg(Color::Default);
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grid[(x, y)].set_fg(Color::Default);
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}
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let (x,y) = write_string_to_grid(&format!("Subject: {}", envelope.subject()),
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grid,
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Color::Byte(33),
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Color::Default,
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(set_y(upper_left, y+1), bottom_right),
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true);
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for x in x..=get_x(bottom_right) {
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grid[(x, y)].set_ch(' ');
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grid[(x, y)].set_bg(Color::Default);
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grid[(x, y)].set_fg(Color::Default);
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}
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let (x, y) = write_string_to_grid(&format!("Message-ID: {}", envelope.message_id_raw()),
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grid,
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Color::Byte(33),
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Color::Default,
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(set_y(upper_left, y+1), bottom_right),
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true);
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for x in x..=get_x(bottom_right) {
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grid[(x, y)].set_ch(' ');
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grid[(x, y)].set_bg(Color::Default);
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grid[(x, y)].set_fg(Color::Default);
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}
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clear_area(grid,
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(set_y(upper_left, y+1), set_y(bottom_right, y+2)));
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context.dirty_areas.push_back((set_y(upper_left, mid), set_y(bottom_right, y+1)));
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y + 2
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};
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|
|
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if !self.dirty {
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if let Some(ref mut p) = self.pager {
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p.draw(grid,
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((get_x(upper_left), y), bottom_right),
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context);
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}
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return;
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}
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self.dirty = false;
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|
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/* Draw body */
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self.draw_mail_view(grid,
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((get_x(upper_left), y), bottom_right),
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context);
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}
|
|
}
|
|
fn process_event(&mut self, event: &UIEvent, context: &mut Context) {
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|
match event.event_type {
|
|
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;
|
|
}
|
|
},
|
|
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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}
|
|
},
|
|
UIEventType::Input(Key::Char('\n')) if self.unfocused == false => {
|
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self.unfocused = true;
|
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self.dirty = true;
|
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},
|
|
UIEventType::Input(Key::Char('m')) if self.unfocused == false => {
|
|
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 output = Command::new("vim")
|
|
.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(output) });
|
|
context.replies.push_back(UIEvent { id: 0, event_type: UIEventType::ChangeMode(UIMode::Fork) });
|
|
return;
|
|
},
|
|
UIEventType::Input(Key::Esc) | UIEventType::Input(Key::Char('i')) if self.unfocused == true => {
|
|
self.unfocused = false;
|
|
self.dirty = true;
|
|
self.pager = None;
|
|
|
|
},
|
|
UIEventType::Input(Key::Char(k @ 'J')) | UIEventType::Input(Key::Char(k @ 'K')) => {
|
|
let folder_length = context.accounts[self.cursor_pos.0].len();
|
|
match k {
|
|
'J' if folder_length > 0 && 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);
|
|
},
|
|
'K' if self.cursor_pos.1 > 0 => {
|
|
self.new_cursor_pos.1 = self.cursor_pos.1 - 1;
|
|
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.pager = None;
|
|
},
|
|
UIEventType::ChangeMode(UIMode::Normal) => {
|
|
self.dirty = true;
|
|
},
|
|
UIEventType::Resize => {
|
|
self.dirty = true;
|
|
},
|
|
_ => {
|
|
},
|
|
}
|
|
if let Some(ref mut p) = self.pager {
|
|
p.process_event(event, context);
|
|
}
|
|
}
|
|
fn is_dirty(&self) -> bool {
|
|
self.dirty || self.pager.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
|
|
}
|
|
}
|