453 lines
17 KiB
Rust
453 lines
17 KiB
Rust
use ui::components::*;
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use ui::cells::*;
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fn make_entry_string(e: &Envelope, idx: usize) -> String {
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format!("{} {} {:.85}",idx,&e.get_datetime().format("%Y-%m-%d %H:%M:%S").to_string(),e.get_subject())
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}
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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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cursor_pos: usize,
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new_cursor_pos: usize,
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length: usize,
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// sorting
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content: CellBuffer,
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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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// content (2-d vec of bytes) or Cells?
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// current view on top of content
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// active or not? for key events
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pub mailbox: Mailbox,
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pager: Option<Pager>,
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}
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impl MailListing {
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pub fn new(mailbox: Mailbox) -> Self {
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let length = mailbox.len();
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MailListing {
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cursor_pos: 0,
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new_cursor_pos: 0,
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length: length,
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content: CellBuffer::new(MAX_COLS, length+1, Cell::with_char(' ')),
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dirty: true,
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unfocused: false,
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mailbox: mailbox,
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pager: None,
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}
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}
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}
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impl MailListing {
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/// Draw only 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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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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let new_area = (upper_left, set_x(upper_left, get_x(bottom_right)));
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write_string_to_grid(&format!("Folder `{}` is empty.",
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self.mailbox.folder.get_name()),
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grid,
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Color::Default,
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Color::Default,
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new_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 rows = get_y(bottom_right) - get_y(upper_left) + 1;
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let prev_page_no = (self.cursor_pos).wrapping_div(rows);
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let page_no = (self.new_cursor_pos).wrapping_div(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 != self.new_cursor_pos && prev_page_no == page_no {
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for idx in [self.cursor_pos, self.new_cursor_pos].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 envelope: &Envelope = &self.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 self.cursor_pos == *idx {
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if !envelope.is_seen() {
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Color::Byte(252)
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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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} else {
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Color::Byte(246)
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};
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let new_area = (set_y(upper_left, get_y(upper_left)+(*idx % rows)), bottom_right);
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let x = write_string_to_grid(&make_entry_string(envelope, *idx),
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grid,
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fg_color,
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bg_color,
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new_area);
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for x in x..=get_x(bottom_right) {
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grid[(x,get_y(upper_left)+(*idx % rows))].set_ch(' ');
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grid[(x,get_y(upper_left)+(*idx % rows))].set_bg(bg_color);
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}
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context.dirty_areas.push_back(new_area);
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}
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self.cursor_pos = self.new_cursor_pos;
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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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context.dirty_areas.push_back(area);
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let mut idx = page_no*rows;
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for y in get_y(upper_left)..=get_y(bottom_right) {
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if idx >= self.length {
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clear_area(grid,
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(set_y(upper_left, y), bottom_right));
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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 = &self.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 self.cursor_pos == 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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let x = write_string_to_grid(&make_entry_string(envelope, idx),
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grid,
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fg_color,
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bg_color,
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(set_y(upper_left, y), bottom_right));
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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(bg_color);
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}
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idx+=1;
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}
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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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let upper_left = upper_left!(area);
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let bottom_right = bottom_right!(area);
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let ref mail = self.mailbox.collection[self.cursor_pos];
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let rows = get_y(bottom_right) - get_y(upper_left);
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let cols = get_x(bottom_right) - get_x(upper_left);
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self.pager = Some(Pager::new(mail, rows, cols));
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self.pager.as_mut().map(|p| p.draw(grid, area, context));
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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.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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let upper_left = upper_left!(area);
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let bottom_right = bottom_right!(area);
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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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/* TODO: define ratio in Configuration file */
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let bottom_entity_rows = (80*total_rows )/100;
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let mid = get_y(upper_left) + total_rows - bottom_entity_rows;
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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), get_y(upper_left) + mid+6), 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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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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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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let headers_rows: usize = 6;
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/* Draw header */
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{
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let ref mail = self.mailbox.collection[self.cursor_pos];
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eprintln!("writing headers {} {}", mail.get_date_as_str(), mail.get_subject());
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let x = write_string_to_grid(&format!("Date: {}", mail.get_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), set_y(bottom_right, mid+1)));
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for x in x..get_x(bottom_right) {
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grid[(x, mid+1)].set_ch(' ');
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grid[(x, mid+1)].set_bg(Color::Default);
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grid[(x, mid+1)].set_fg(Color::Default);
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}
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let x = write_string_to_grid(&format!("From: {}", mail.get_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, mid+2), set_y(bottom_right, mid+2)));
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for x in x..get_x(bottom_right) {
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grid[(x, mid+2)].set_ch(' ');
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grid[(x, mid+2)].set_bg(Color::Default);
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grid[(x, mid+2)].set_fg(Color::Default);
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}
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let x = write_string_to_grid(&format!("To: {}", mail.get_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, mid+3), set_y(bottom_right, mid+3)));
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for x in x..get_x(bottom_right) {
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grid[(x, mid+3)].set_ch(' ');
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grid[(x, mid+3)].set_bg(Color::Default);
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grid[(x, mid+3)].set_fg(Color::Default);
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}
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let x = write_string_to_grid(&format!("Subject: {}", mail.get_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, mid+4), set_y(bottom_right, mid+4)));
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for x in x..get_x(bottom_right) {
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grid[(x, mid+4)].set_ch(' ');
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grid[(x, mid+4)].set_bg(Color::Default);
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grid[(x, mid+4)].set_fg(Color::Default);
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}
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let x = write_string_to_grid(&format!("Message-ID: {}", mail.get_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, mid+5), set_y(bottom_right, mid+5)));
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for x in x..get_x(bottom_right) {
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grid[(x, mid+5)].set_ch(' ');
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grid[(x, mid+5)].set_bg(Color::Default);
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grid[(x, mid+5)].set_fg(Color::Default);
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}
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}
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context.dirty_areas.push_back((set_y(upper_left, mid), set_y(bottom_right, mid+5)));
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/* Draw body */
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self.draw_mail_view(grid,
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((get_x(upper_left), get_y(upper_left) + mid + headers_rows), bottom_right),
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context);
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}
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}
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fn process_event(&mut self, event: &UIEvent, context: &mut Context) {
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match event.event_type {
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UIEventType::Input(Key::Up) => {
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if self.cursor_pos > 0 {
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self.new_cursor_pos -= 1;
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self.dirty = true;
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}
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},
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UIEventType::Input(Key::Down) => {
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if self.length > 0 && self.new_cursor_pos < self.length - 1 {
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self.new_cursor_pos += 1;
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self.dirty = true;
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}
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},
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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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},
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UIEventType::Input(Key::Esc) if self.unfocused == true => {
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self.unfocused = false;
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self.dirty = true;
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self.pager = None;
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},
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UIEventType::RefreshMailbox(ref m) => {
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self.cursor_pos = 0;
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self.new_cursor_pos = 0;
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self.mailbox = m.clone();
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self.length = m.collection.len();
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self.dirty = true;
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self.pager = None;
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},
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_ => {
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},
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}
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if let Some(ref mut p) = self.pager {
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p.process_event(event, context);
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}
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}
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fn is_dirty(&self) -> bool {
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self.dirty || self.pager.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
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}
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}
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#[derive(Debug)]
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pub struct AccountMenu {
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entries: Vec<(usize, Folder)>,
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dirty: bool,
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name: String,
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cursor: Option<String>,
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}
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impl AccountMenu {
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pub fn new(account: &Account) -> Self{
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let mut entries = Vec::with_capacity(account.len());
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for (idx, acc) in account.list_folders().iter().enumerate() {
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entries.push((idx, acc.clone()));
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}
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AccountMenu {
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entries: entries,
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dirty: true,
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name: account.get_name().to_string(),
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cursor: None,
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}
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}
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fn highlight_folder(&mut self, m: &Mailbox) {
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self.dirty = true;
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self.cursor = Some(m.folder.get_name().to_string());
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}
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}
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impl Component for AccountMenu {
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fn draw(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
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if !(self.dirty) {
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return;
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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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self.dirty = false;
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let mut parents: Vec<Option<usize>> = vec!(None; self.entries.len());
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for (idx, e) in self.entries.iter().enumerate() {
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for c in e.1.get_children() {
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parents[*c] = Some(idx);
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}
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}
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let mut roots = Vec::new();
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for (idx, c) in parents.iter().enumerate() {
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if c.is_none() {
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roots.push(idx);
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}
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}
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let mut ind = 0;
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let mut depth = String::from(" ");
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let mut s = String::from(format!("\n\n {}\n", self.name));
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fn pop(depth: &mut String) {
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depth.pop();
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depth.pop();
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depth.pop();
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depth.pop();
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}
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fn push(depth: &mut String, c: char) {
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depth.push(' ');
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depth.push(c);
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depth.push(' ');
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depth.push(' ');
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}
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fn print(root: usize, parents: &Vec<Option<usize>>, depth: &mut String, entries: &Vec<(usize, Folder)>, mut s: String) -> String {
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let len = s.len();
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s.insert_str(len, &format!("{}: {}\n ", entries[root].0, &entries[root].1.get_name()));
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let children_no = entries[root].1.get_children().len();
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for (idx, child) in entries[root].1.get_children().iter().enumerate() {
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let len = s.len();
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s.insert_str(len, &format!("{}├─", depth));
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push(depth, if idx == children_no - 1 {'│'} else { ' ' });
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s = print(*child, parents, depth, entries, s);
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pop(depth);
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}
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s
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}
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for r in roots {
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s =print(r, &parents, &mut depth, &self.entries, s);
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}
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let lines: Vec<&str> = s.lines().collect();
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let lines_len = lines.len();
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let mut idx = 0;
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for y in get_y(upper_left)..get_y(bottom_right) {
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if idx == lines_len {
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break;
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}
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let s = if idx == lines_len - 2 {
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format!("{}", lines[idx].replace("├", "└"))
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} else {
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format!("{}", lines[idx])
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};
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write_string_to_grid(&s,
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grid,
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Color::Byte(30),
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Color::Default,
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(set_y(upper_left, y), bottom_right));
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idx += 1;
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}
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context.dirty_areas.push_back(area);
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}
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fn process_event(&mut self, event: &UIEvent, _context: &mut Context) {
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match event.event_type {
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UIEventType::RefreshMailbox(ref m) => {
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self.highlight_folder(m);
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},
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_ => {
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},
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}
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}
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fn is_dirty(&self) -> bool {
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self.dirty
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}
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}
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