542 lines
21 KiB
Rust
542 lines
21 KiB
Rust
/*
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* meli - ui crate.
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*
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* Copyright 2017-2018 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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use super::*;
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use linkify::{Link, LinkFinder};
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use std::process::{Command, Stdio};
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use mime_apps::query_default_app;
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#[derive(PartialEq, Debug)]
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enum ViewMode {
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Normal,
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Url,
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Attachment(usize),
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Raw,
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Subview,
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}
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impl ViewMode {
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fn is_attachment(&self) -> bool {
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match self {
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ViewMode::Attachment(_) => true,
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_ => false,
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}
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}
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}
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/// Contains an Envelope view, with sticky headers, a pager for the body, and subviews for more
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/// menus
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#[derive(Debug)]
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pub struct EnvelopeView {
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pager: Option<Pager>,
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subview: Option<Box<Component>>,
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dirty: bool,
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mode: ViewMode,
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wrapper: EnvelopeWrapper,
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account_pos: usize,
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cmd_buf: String,
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id: ComponentId,
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}
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impl fmt::Display for EnvelopeView {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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// TODO display subject/info
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write!(f, "view mail")
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}
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}
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impl EnvelopeView {
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pub fn new(
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wrapper: EnvelopeWrapper,
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pager: Option<Pager>,
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subview: Option<Box<Component>>,
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account_pos: usize,
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) -> Self {
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EnvelopeView {
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pager,
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subview,
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dirty: true,
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mode: ViewMode::Normal,
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wrapper,
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account_pos,
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cmd_buf: String::with_capacity(4),
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id: ComponentId::default(),
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}
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}
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/// Returns the string to be displayed in the Viewer
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fn attachment_to_text<'closure, 's: 'closure, 'context: 's>(
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&'s self,
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body: &'context Attachment,
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context: &'context mut Context,
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) -> String {
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let finder = LinkFinder::new();
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let body_text = String::from_utf8_lossy(&decode_rec(
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&body,
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Some(Box::new(|a: &Attachment, v: &mut Vec<u8>| {
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if a.content_type().is_text_html() {
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use std::io::Write;
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use std::process::{Command, Stdio};
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let settings = context.accounts[self.account_pos].runtime_settings.conf();
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if let Some(filter_invocation) = settings.html_filter() {
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let parts = split_command!(filter_invocation);
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let (cmd, args) = (parts[0], &parts[1..]);
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let command_obj = Command::new(cmd)
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.args(args)
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
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.spawn();
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if command_obj.is_err() {
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context.replies.push_back(UIEvent::Notification(
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Some(format!(
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"Failed to start html filter process: {}",
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filter_invocation,
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)),
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String::new(),
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));
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return;
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}
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let mut html_filter = command_obj.unwrap();
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html_filter
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.stdin
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.as_mut()
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.unwrap()
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.write_all(&v)
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.expect("Failed to write to stdin");
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*v = format!(
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"Text piped through `{}`. Press `v` to open in web browser. \n\n",
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filter_invocation
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)
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.into_bytes();
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v.extend(html_filter.wait_with_output().unwrap().stdout);
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}
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}
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})),
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))
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.into_owned();
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match self.mode {
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ViewMode::Normal | ViewMode::Subview => {
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let mut t = body_text.to_string();
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if body.count_attachments() > 1 {
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t = body
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.attachments()
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.iter()
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.enumerate()
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.fold(t, |mut s, (idx, a)| {
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s.push_str(&format!("[{}] {}\n\n", idx, a));
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s
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});
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}
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t
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}
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ViewMode::Raw => String::from_utf8_lossy(body.bytes()).into_owned(),
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ViewMode::Url => {
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let mut t = body_text.to_string();
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for (lidx, l) in finder.links(&body.text()).enumerate() {
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let offset = if lidx < 10 {
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lidx * 3
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} else if lidx < 100 {
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26 + (lidx - 9) * 4
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} else if lidx < 1000 {
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385 + (lidx - 99) * 5
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} else {
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panic!("BUG: Message body with more than 100 urls, fix this");
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};
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t.insert_str(l.start() + offset, &format!("[{}]", lidx));
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}
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if body.count_attachments() > 1 {
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t = body
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.attachments()
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.iter()
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.enumerate()
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.fold(t, |mut s, (idx, a)| {
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s.push_str(&format!("[{}] {}\n\n", idx, a));
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s
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});
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}
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t
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}
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ViewMode::Attachment(aidx) => {
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let attachments = body.attachments();
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let mut ret = "Viewing attachment. Press `r` to return \n".to_string();
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ret.push_str(&attachments[aidx].text());
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ret
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}
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}
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}
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/*
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* TODO: add recolor changes so that this function returns a vector of required highlights
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* to pass to write_string...
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pub fn plain_text_to_buf(s: &str, highlight_urls: bool) -> CellBuffer {
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let mut buf = CellBuffer::from(s);
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if highlight_urls {
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let lines: Vec<&str> = s.split('\n').map(|l| l.trim_right()).collect();
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let mut shift = 0;
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let mut lidx_total = 0;
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let finder = LinkFinder::new();
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for r in &lines {
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for l in finder.links(&r) {
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let offset = if lidx_total < 10 {
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3
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} else if lidx_total < 100 {
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4
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} else if lidx_total < 1000 {
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5
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} else {
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panic!("BUG: Message body with more than 100 urls");
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};
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for i in 1..=offset {
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buf[(l.start() + shift - i, 0)].set_fg(Color::Byte(226));
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//buf[(l.start() + shift - 2, 0)].set_fg(Color::Byte(226));
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//buf[(l.start() + shift - 3, 0)].set_fg(Color::Byte(226));
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}
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lidx_total += 1;
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}
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// Each Cell represents one char so next line will be:
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shift += r.chars().count() + 1;
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}
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}
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buf
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}
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*/
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}
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impl Component for EnvelopeView {
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fn draw(&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 y: usize = {
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let envelope: &Envelope = &self.wrapper;
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if self.mode == ViewMode::Raw {
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clear_area(grid, area);
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context.dirty_areas.push_back(area);
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get_y(upper_left) - 1
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} else {
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let (x, y) = write_string_to_grid(
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&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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area,
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true,
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);
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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(
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&format!("From: {}", envelope.field_from_to_string()),
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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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);
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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(
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&format!("To: {}", envelope.field_to_to_string()),
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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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);
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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(
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&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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);
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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(
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&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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);
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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, (set_y(upper_left, y + 1), set_y(bottom_right, y + 2)));
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context
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.dirty_areas
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.push_back((upper_left, set_y(bottom_right, y + 1)));
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y + 1
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}
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};
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if self.dirty {
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let body = self.wrapper.body_bytes(self.wrapper.buffer());
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match self.mode {
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ViewMode::Attachment(aidx) if body.attachments()[aidx].is_html() => {
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let attachment = &body.attachments()[aidx];
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self.subview = Some(Box::new(HtmlView::new(
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decode(&attachment, None),
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context,
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self.account_pos,
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)));
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}
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ViewMode::Normal if body.is_html() => {
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self.subview = Some(Box::new(HtmlView::new(
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decode(&body, None),
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context,
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self.account_pos,
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)));
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self.mode = ViewMode::Subview;
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}
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_ => {
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let text = {
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self.attachment_to_text(&body, context)
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/*
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let text = self.attachment_to_text(&body);
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// URL indexes must be colored (ugh..)
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EnvelopeView::plain_text_to_buf(&text, self.mode == ViewMode::Url)
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*/
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};
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let cursor_pos = if self.mode.is_attachment() {
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Some(0)
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} else {
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self.pager.as_mut().map(|p| p.cursor_pos())
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};
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self.pager = Some(Pager::from_string(
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text,
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Some(context),
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cursor_pos,
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Some(width!(area)),
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));
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}
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};
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self.dirty = false;
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}
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if let Some(s) = self.subview.as_mut() {
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s.draw(grid, (set_y(upper_left, y + 1), bottom_right), context);
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} else if let Some(p) = self.pager.as_mut() {
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p.draw(grid, (set_y(upper_left, y + 1), bottom_right), context);
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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 sub) = self.subview {
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if sub.process_event(event, context) {
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return true;
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}
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} else if let Some(ref mut p) = self.pager {
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if p.process_event(event, context) {
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return true;
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}
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}
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match *event {
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UIEvent::Input(Key::Esc) | UIEvent::Input(Key::Alt('')) => {
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self.cmd_buf.clear();
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context
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.replies
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.push_back(UIEvent::StatusEvent(StatusEvent::BufClear));
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return true;
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}
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UIEvent::Input(Key::Char(c)) if c >= '0' && c <= '9' => {
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self.cmd_buf.push(c);
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return true;
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}
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UIEvent::Input(Key::Char('r'))
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if self.mode == ViewMode::Normal || self.mode == ViewMode::Raw =>
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{
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self.mode = if self.mode == ViewMode::Raw {
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ViewMode::Normal
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} else {
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ViewMode::Raw
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};
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self.dirty = true;
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return true;
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}
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UIEvent::Input(Key::Char('r'))
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if self.mode.is_attachment() || self.mode == ViewMode::Subview =>
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{
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self.mode = ViewMode::Normal;
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self.subview.take();
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self.dirty = true;
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return true;
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}
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UIEvent::Input(Key::Char('a'))
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if !self.cmd_buf.is_empty() && self.mode == ViewMode::Normal =>
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{
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let lidx = self.cmd_buf.parse::<usize>().unwrap();
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self.cmd_buf.clear();
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context
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.replies
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.push_back(UIEvent::StatusEvent(StatusEvent::BufClear));
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{
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let envelope: &Envelope = self.wrapper.envelope();
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if let Some(u) = envelope
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.body_bytes(self.wrapper.buffer())
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.attachments()
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.get(lidx)
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{
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match u.content_type() {
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ContentType::MessageRfc822 => {
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self.mode = ViewMode::Subview;
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self.subview = Some(Box::new(Pager::from_string(
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String::from_utf8_lossy(&decode_rec(u, None)).to_string(),
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Some(context),
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None,
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None,
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)));
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}
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ContentType::Text { .. } => {
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self.mode = ViewMode::Attachment(lidx);
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self.dirty = true;
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}
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ContentType::Multipart { .. } => {
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context.replies.push_back(UIEvent::StatusEvent(
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StatusEvent::DisplayMessage(
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"Multipart attachments are not supported yet.".to_string(),
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),
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));
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return true;
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}
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ContentType::Unsupported { .. } => {
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let attachment_type = u.mime_type();
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let binary = query_default_app(&attachment_type);
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if let Ok(binary) = binary {
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let mut p = create_temp_file(&decode(u, None), None);
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Command::new(&binary)
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.arg(p.path())
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
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.spawn()
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.unwrap_or_else(|_| {
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panic!("Failed to start {}", binary.display())
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});
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context.temp_files.push(p);
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} else {
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context.replies.push_back(UIEvent::StatusEvent(
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StatusEvent::DisplayMessage(format!(
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"Couldn't find a default application for type {}",
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attachment_type
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)),
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));
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return true;
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}
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}
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}
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} else {
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context.replies.push_back(UIEvent::StatusEvent(
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StatusEvent::DisplayMessage(format!(
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"Attachment `{}` not found.",
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lidx
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)),
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));
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return true;
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}
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};
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return true;
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}
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UIEvent::Input(Key::Char('g'))
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if !self.cmd_buf.is_empty() && self.mode == ViewMode::Url =>
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{
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let lidx = self.cmd_buf.parse::<usize>().unwrap();
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self.cmd_buf.clear();
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context
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.replies
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.push_back(UIEvent::StatusEvent(StatusEvent::BufClear));
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let url = {
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let envelope: &Envelope = self.wrapper.envelope();
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let finder = LinkFinder::new();
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let mut t = envelope
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.body_bytes(self.wrapper.buffer())
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.text()
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.to_string();
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let links: Vec<Link> = finder.links(&t).collect();
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if let Some(u) = links.get(lidx) {
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u.as_str().to_string()
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} else {
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context.replies.push_back(UIEvent::StatusEvent(
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StatusEvent::DisplayMessage(format!("Link `{}` not found.", lidx)),
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));
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return true;
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}
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};
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Command::new("xdg-open")
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.arg(url)
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
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.spawn()
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.expect("Failed to start xdg_open");
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return true;
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}
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UIEvent::Input(Key::Char('u')) => {
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match self.mode {
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ViewMode::Normal => self.mode = ViewMode::Url,
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ViewMode::Url => self.mode = ViewMode::Normal,
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_ => {}
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}
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self.dirty = true;
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return true;
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}
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_ => {}
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}
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false
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}
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fn is_dirty(&self) -> bool {
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self.dirty
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|| self.pager.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
|
||
|| self.subview.as_ref().map(|p| p.is_dirty()).unwrap_or(false)
|
||
}
|
||
fn set_dirty(&mut self) {
|
||
self.dirty = true;
|
||
}
|
||
|
||
fn id(&self) -> ComponentId {
|
||
self.id
|
||
}
|
||
fn set_id(&mut self, id: ComponentId) {
|
||
self.id = id;
|
||
}
|
||
}
|