Andy Dixon
9805681c2c
- LICENSE: the GNU Affero General Public License, version 3 (verbatim from gnu.org). - SPDX-License-Identifier: AGPL-3.0-only plus a copyright line on every first-party source file (Rust, shell, Python, PHP); vendored crates keep their own licenses. - Cargo manifests carry license/authors/repository; the macOS bundle copyright and the About page state the license and link the source. - Release zips (and the macOS app bundle) include LICENSE. - README: License section.
559 lines
23 KiB
Rust
559 lines
23 KiB
Rust
// SPDX-License-Identifier: AGPL-3.0-only
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// Copyright (C) 2026 Andy Dixon
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//! IRC client view: room tabs, message log, composer and room/user lists. Port of `irc.js`;
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//! lines are `ircformat::format_event` spans drawn in the terminal theme's colours.
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use crate::state::Shared;
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use crate::terminal_themes::TermTheme;
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use crate::theme::Tokens;
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use crate::widgets;
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use egui::text::LayoutJob;
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use egui::{Color32, FontId, Galley, Rect, RichText, Sense, Stroke, TextFormat, Ui, pos2, vec2};
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use egui_phosphor::regular as icon;
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use nexus_core::clients::irc::{self, RoomInfo};
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use nexus_core::ircformat::{self, Span};
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use nexus_core::models::Profile;
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use std::collections::{HashMap, HashSet, VecDeque};
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use std::sync::Arc;
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const SERVER: &str = "server";
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const MAX_LINES: usize = 2000;
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/// Open conversations; past this the oldest idle query is dropped, so a flood of messages from
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/// unique nicks can't grow the view without bound.
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const MAX_TARGETS: usize = 200;
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const SIDEBAR_W: f32 = 230.0;
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struct Line {
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spans: Vec<Span>,
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/// Laid-out line for the wrap width and theme it was built with.
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galley: Option<(f32, &'static str, Arc<Galley>)>,
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}
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struct Target {
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name: String,
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lines: VecDeque<Line>,
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}
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/// Where an event goes (irc.js `handleEvent`).
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#[derive(Debug, PartialEq)]
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enum Route {
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Rooms,
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Users(String),
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RoomList,
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Line(String),
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}
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fn route(e: &irc::Event) -> Route {
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match e.kind.as_str() {
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"rooms" => Route::Rooms,
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"users" => Route::Users(e.target.clone()),
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"room-list" => Route::RoomList,
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_ => Route::Line(if e.target.is_empty() { SERVER.into() } else { e.target.clone() }),
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}
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}
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fn is_room(t: &str) -> bool {
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t.starts_with(['#', '&', '+', '!'])
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}
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fn display_nick(u: &str) -> &str {
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u.trim_start_matches(['~', '&', '@', '%', '+'])
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}
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/// Tab completion of the last word: `@pre` → `@nick `, `pre` → `nick ` (first match, case-insensitive).
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fn complete(input: &str, users: &[String]) -> Option<String> {
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let start = input.rfind(char::is_whitespace).map_or(0, |i| i + 1);
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let word = &input[start..];
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let (at, prefix) = match word.strip_prefix('@') {
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Some(p) => ("@", p),
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None => ("", word),
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};
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if prefix.contains('@') || (at.is_empty() && prefix.is_empty()) {
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return None;
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}
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let lower = prefix.to_lowercase();
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let nick = users.iter().map(|u| display_nick(u)).find(|n| n.to_lowercase().starts_with(&lower))?;
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Some(format!("{}{at}{nick} ", &input[..start]))
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}
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fn time(ms: i64) -> String {
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use chrono::{Local, TimeZone};
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let d = if ms > 0 { Local.timestamp_millis_opt(ms).single() } else { None }.unwrap_or_else(Local::now);
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d.format("%H:%M:%S").to_string()
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}
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/// xterm-256 palette: the theme's 16 colours, the 6×6×6 cube, then the grey ramp.
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fn xterm(i: u8, theme: &TermTheme) -> Color32 {
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let i = i as usize;
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if i < 16 {
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let [r, g, b, _] = theme.ansi[i];
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return Color32::from_rgb(r, g, b);
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}
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if i < 232 {
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let i = i - 16;
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let v = |x: usize| if x == 0 { 0 } else { (55 + x * 40) as u8 };
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return Color32::from_rgb(v(i / 36), v((i / 6) % 6), v(i % 6));
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}
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let g = (8 + (i - 232) * 10) as u8;
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Color32::from_rgb(g, g, g)
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}
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fn rgb4(c: [u8; 4]) -> Color32 {
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Color32::from_rgb(c[0], c[1], c[2])
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}
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fn layout(spans: &[Span], theme: &TermTheme, font: &FontId, wrap: f32) -> LayoutJob {
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let mut job = LayoutJob { wrap: egui::text::TextWrapping { max_width: wrap, ..Default::default() }, ..Default::default() };
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let (dfg, dbg) = (rgb4(theme.foreground), Color32::TRANSPARENT);
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for s in spans {
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let st = s.style;
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let mut fg = st.fg_rgb.map(|[r, g, b]| Color32::from_rgb(r, g, b)).or(st.fg.map(|i| xterm(i, theme))).unwrap_or(dfg);
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let mut bg = st.bg_rgb.map(|[r, g, b]| Color32::from_rgb(r, g, b)).or(st.bg.map(|i| xterm(i, theme))).unwrap_or(dbg);
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if st.reverse {
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(fg, bg) = (if bg == Color32::TRANSPARENT { rgb4(theme.background) } else { bg }, fg);
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}
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if st.dim {
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fg = fg.gamma_multiply(0.65);
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}
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let line = Stroke::new(1.0, fg);
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job.append(
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&s.text,
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0.0,
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TextFormat {
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font_id: font.clone(),
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color: fg,
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background: bg,
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italics: st.italic,
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underline: if st.underline { line } else { Stroke::NONE },
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strikethrough: if st.strike { line } else { Stroke::NONE },
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..Default::default()
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},
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);
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}
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job
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}
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pub struct IrcView {
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pub session: String,
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targets: Vec<Target>,
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active: String,
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unread: HashSet<String>,
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users: HashMap<String, Vec<String>>,
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joined: Vec<RoomInfo>,
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room_list: Vec<RoomInfo>,
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listing: bool,
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room_filter: String,
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join_input: String,
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input: String,
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refreshed: bool,
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focus_composer: bool,
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font_size: f32,
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}
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impl IrcView {
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pub fn new(session: &str, profile: &Profile) -> IrcView {
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let mut v = IrcView {
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session: session.into(),
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targets: vec![],
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active: SERVER.into(),
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unread: HashSet::new(),
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users: HashMap::new(),
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joined: vec![],
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room_list: vec![],
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listing: false,
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room_filter: String::new(),
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join_input: String::new(),
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input: String::new(),
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refreshed: false,
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focus_composer: true,
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font_size: if profile.terminal_font_size > 0 { profile.terminal_font_size as f32 } else { 13.0 },
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};
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v.append(SERVER, &irc::Event { kind: "system".into(), text: "Connecting...".into(), ..Default::default() });
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v
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}
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fn target(&mut self, name: &str) -> &mut Target {
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let name = if name.is_empty() { SERVER } else { name };
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let i = match self.targets.iter().position(|t| t.name == name) {
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Some(i) => i,
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None => {
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if self.targets.len() >= MAX_TARGETS {
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// ponytail: evicts the oldest-opened idle target, not least-recently-used.
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let (active, joined) = (&self.active, &self.joined);
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if let Some(i) = self.targets.iter().position(|t| t.name != SERVER && t.name != *active && !joined.iter().any(|r| r.name == t.name)) {
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let gone = self.targets.remove(i);
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self.unread.remove(&gone.name);
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self.users.remove(&gone.name);
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}
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}
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self.targets.push(Target { name: name.into(), lines: VecDeque::new() });
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self.targets.len() - 1
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}
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};
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&mut self.targets[i]
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}
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fn append(&mut self, target: &str, e: &irc::Event) {
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let spans = ircformat::format_event(e, &time(e.timestamp));
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let t = self.target(target);
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t.lines.push_back(Line { spans, galley: None });
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while t.lines.len() > MAX_LINES {
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t.lines.pop_front();
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}
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}
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pub fn on_event(&mut self, event: irc::Event) {
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match route(&event) {
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Route::Rooms => {
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// Show the first room once auto-join lands, rather than leaving the server log up.
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let first = self.joined.is_empty() && self.active == SERVER;
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self.joined = event.rooms;
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if first && let Some(r) = self.joined.first().map(|r| r.name.clone()) {
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self.set_active(&r);
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}
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for r in self.joined.clone() {
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self.target(&r.name);
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}
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}
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Route::Users(target) => {
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if !target.is_empty() {
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self.users.insert(target, event.users);
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}
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}
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Route::RoomList => {
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self.room_list = event.rooms;
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self.listing = false;
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}
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Route::Line(target) => {
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self.append(&target, &event);
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if target != self.active {
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self.unread.insert(target);
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}
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}
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}
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}
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fn set_active(&mut self, target: &str) {
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self.target(target);
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self.active = target.into();
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self.unread.remove(target);
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self.focus_composer = true;
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}
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fn send(&mut self, s: &mut Shared) {
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let text = std::mem::take(&mut self.input);
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if text.trim().is_empty() {
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return;
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}
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let r = s.svc.sessions.irc(&self.session).and_then(|c| c.handle_input(&self.active, &text));
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if let Err(e) = r {
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s.error(e.to_string());
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let active = self.active.clone();
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self.append(&active, &irc::Event { kind: "error".into(), text: e.to_string(), ..Default::default() });
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}
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}
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fn join(&mut self, s: &mut Shared, room: &str) {
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if let Err(e) = s.svc.sessions.irc(&self.session).and_then(|c| c.join(room)) {
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s.error(format!("Join failed: {e}"));
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}
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}
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fn insert_mention(&mut self, nick: &str) {
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if !self.input.is_empty() && !self.input.ends_with(char::is_whitespace) {
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self.input.push(' ');
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}
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self.input.push_str(&format!("@{nick} "));
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self.focus_composer = true;
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}
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pub fn ui(&mut self, ui: &mut Ui, s: &mut Shared) {
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if !self.refreshed {
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self.refreshed = true;
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if let Ok(c) = s.svc.sessions.irc(&self.session) {
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self.on_event(irc::Event { kind: "rooms".into(), rooms: c.rooms(), ..Default::default() });
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}
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}
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let t = Tokens::get(ui.ctx());
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let full = ui.available_rect_before_wrap();
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let side_w = SIDEBAR_W.min(full.width() * 0.4);
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let main = Rect::from_min_max(full.min, pos2(full.right() - side_w, full.bottom()));
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let side = Rect::from_min_max(pos2(main.right(), full.top()), full.max);
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ui.allocate_rect(full, Sense::hover());
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let tabs_h = 32.0;
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let comp_h = 40.0;
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let tabs = Rect::from_min_max(main.min, pos2(main.right(), main.top() + tabs_h));
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let log = Rect::from_min_max(pos2(main.left(), tabs.bottom()), pos2(main.right(), main.bottom() - comp_h));
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let comp = Rect::from_min_max(pos2(main.left(), log.bottom()), main.max);
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ui.painter().rect_filled(tabs, 0.0, t.tab_strip);
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let mut c = ui.new_child(egui::UiBuilder::new().max_rect(tabs.shrink2(vec2(6.0, 4.0))).layout(egui::Layout::left_to_right(egui::Align::Center)));
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self.tabs(&mut c, s);
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let theme = crate::terminal_themes::get(&s.prefs.terminal_theme);
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ui.painter().rect_filled(log, 0.0, rgb4(theme.background));
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let mut c = ui.new_child(egui::UiBuilder::new().max_rect(log.shrink2(vec2(10.0, 6.0))));
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self.log(&mut c, theme);
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ui.painter().rect_filled(comp, 0.0, t.chrome);
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let mut c = ui.new_child(egui::UiBuilder::new().max_rect(comp.shrink2(vec2(8.0, 6.0))).layout(egui::Layout::left_to_right(egui::Align::Center)));
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self.composer(&mut c, s);
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ui.painter().rect_filled(side, 0.0, t.dock);
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ui.painter().line_segment([side.left_top(), side.left_bottom()], Stroke::new(1.0, t.separator));
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let mut c = ui.new_child(egui::UiBuilder::new().max_rect(side.shrink2(vec2(10.0, 8.0))));
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self.sidebar(&mut c, s);
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}
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fn tabs(&mut self, ui: &mut Ui, s: &mut Shared) {
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let t = Tokens::get(ui.ctx());
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egui::ScrollArea::horizontal().id_salt("irc-tabs").show(ui, |ui| {
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ui.horizontal(|ui| {
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let names: Vec<String> = self.targets.iter().map(|t| t.name.clone()).collect();
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for name in names {
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let label = if name == SERVER { format!("{} Server", icon::HARD_DRIVES) } else { name.clone() };
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let unread = self.unread.contains(&name);
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let text = if unread { RichText::new(format!("{label} •")).color(t.accent) } else { RichText::new(label) };
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let r = ui.selectable_label(self.active == name, text);
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if r.clicked() {
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self.set_active(&name);
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}
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if is_room(&name) {
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r.context_menu(|ui| {
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if ui.button(format!("{} Leave {name}", icon::SIGN_OUT)).clicked()
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&& let Err(e) = s.svc.sessions.irc(&self.session).and_then(|c| c.part(&name))
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{
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s.error(format!("Part failed: {e}"));
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}
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});
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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 log(&mut self, ui: &mut Ui, theme: &'static TermTheme) {
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let font = FontId::monospace(self.font_size);
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let wrap = ui.available_width().max(100.0);
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let Some(target) = self.targets.iter_mut().find(|t| t.name == self.active) else {
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return;
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};
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// Lay out lines once per width/theme; the galley cache keeps scrolling cheap.
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let mut tops = Vec::with_capacity(target.lines.len());
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let mut y = 0.0;
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for line in target.lines.iter_mut() {
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let stale = line.galley.as_ref().is_none_or(|(w, id, _)| *w != wrap || *id != theme.id);
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if stale {
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let g = ui.fonts_mut(|f| f.layout_job(layout(&line.spans, theme, &font, wrap)));
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line.galley = Some((wrap, theme.id, g));
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}
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tops.push(y);
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y += line.galley.as_ref().map_or(0.0, |(_, _, g)| g.size().y) + 1.0;
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}
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let total = y;
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egui::ScrollArea::vertical().id_salt(("irc-log", &self.active)).auto_shrink([false, false]).stick_to_bottom(true).show_viewport(ui, |ui, vp| {
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let (rect, _) = ui.allocate_exact_size(vec2(wrap, total), Sense::hover());
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let first = tops.partition_point(|&top| top < vp.min.y).saturating_sub(1);
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for (i, line) in target.lines.iter().enumerate().skip(first) {
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if tops[i] > vp.max.y {
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break;
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}
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if let Some((_, _, g)) = &line.galley {
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ui.painter().galley(pos2(rect.left(), rect.top() + tops[i]), g.clone(), rgb4(theme.foreground));
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}
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}
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});
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}
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fn composer(&mut self, ui: &mut Ui, s: &mut Shared) {
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let t = Tokens::get(ui.ctx());
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let id = egui::Id::new(("irc-composer", &self.session));
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// Tab completes nicks instead of moving focus.
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if ui.memory(|m| m.has_focus(id)) && ui.input_mut(|i| i.consume_key(egui::Modifiers::NONE, egui::Key::Tab)) && is_room(&self.active) {
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let users = self.users.get(&self.active).cloned().unwrap_or_default();
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if let Some(done) = complete(&self.input, &users) {
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self.input = done;
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self.move_cursor_to_end(ui, id);
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}
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}
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let mut send = false;
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ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
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send |= ui.add(egui::Button::new(RichText::new(format!("{} Send", icon::PAPER_PLANE_RIGHT)).color(t.accent_text)).fill(t.accent)).clicked();
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let hint = if self.active == SERVER { "/command or /msg <nick> <message>".to_string() } else { format!("Message {} or /command", self.active) };
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let r = ui.add(egui::TextEdit::singleline(&mut self.input).id(id).hint_text(hint).desired_width(ui.available_width()));
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if r.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter)) {
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send = true;
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self.focus_composer = true;
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}
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});
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if send {
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self.send(s);
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}
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if std::mem::take(&mut self.focus_composer) {
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ui.memory_mut(|m| m.request_focus(id));
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self.move_cursor_to_end(ui, id);
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}
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}
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fn move_cursor_to_end(&self, ui: &Ui, id: egui::Id) {
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if let Some(mut st) = egui::TextEdit::load_state(ui.ctx(), id) {
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let end = egui::text::CCursor::new(self.input.chars().count());
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st.cursor.set_char_range(Some(egui::text::CCursorRange::one(end)));
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st.store(ui.ctx(), id);
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}
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}
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fn sidebar(&mut self, ui: &mut Ui, s: &mut Shared) {
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let t = Tokens::get(ui.ctx());
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let total_h = ui.available_height();
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widgets::section(ui, "Rooms");
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let mut join = false;
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ui.horizontal(|ui| {
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let r = ui.add(egui::TextEdit::singleline(&mut self.join_input).hint_text("#room").desired_width(ui.available_width() - 52.0));
|
||
join |= r.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter));
|
||
join |= ui.button("Join").clicked();
|
||
});
|
||
if join && !self.join_input.trim().is_empty() {
|
||
let room = self.join_input.trim().to_string();
|
||
self.join(s, &room);
|
||
self.join_input.clear();
|
||
}
|
||
let rows_h = 22.0;
|
||
if self.joined.is_empty() {
|
||
widgets::hint(ui, "No joined rooms");
|
||
} else {
|
||
let joined = self.joined.clone();
|
||
let h = (joined.len() as f32 * (rows_h + 2.0)).min(total_h * 0.22);
|
||
ui.allocate_ui(vec2(ui.available_width(), h), |ui| {
|
||
let sel = joined.iter().position(|r| r.name == self.active);
|
||
let clicked = widgets::rows(ui, "irc-joined", joined.len(), rows_h, sel, |ui, i| {
|
||
let r = &joined[i];
|
||
ui.label(&r.name);
|
||
ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
|
||
ui.label(RichText::new(r.users.to_string()).color(t.text_faint).size(11.0));
|
||
});
|
||
let tip = ircformat::plain_text(if r.topic.is_empty() { &r.name } else { &r.topic });
|
||
ui.interact(ui.max_rect(), ui.id().with("tip"), Sense::hover()).on_hover_text(tip);
|
||
});
|
||
if let Some(i) = clicked {
|
||
self.set_active(&joined[i].name);
|
||
}
|
||
});
|
||
}
|
||
|
||
ui.add_space(6.0);
|
||
ui.horizontal(|ui| {
|
||
widgets::section(ui, "Room List");
|
||
ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
|
||
if ui.small_button(format!("{} List", icon::LIST_BULLETS)).clicked() {
|
||
self.room_list.clear();
|
||
self.listing = true;
|
||
if let Err(e) = s.svc.sessions.irc(&self.session).and_then(|c| c.list_rooms()) {
|
||
self.listing = false;
|
||
s.error(format!("Room list failed: {e}"));
|
||
}
|
||
}
|
||
});
|
||
});
|
||
ui.add(egui::TextEdit::singleline(&mut self.room_filter).hint_text("Filter rooms").desired_width(ui.available_width()));
|
||
let filter = self.room_filter.to_lowercase();
|
||
let listed: Vec<&RoomInfo> =
|
||
self.room_list.iter().filter(|r| filter.is_empty() || format!("{} {}", r.name, r.topic).to_lowercase().contains(&filter)).collect();
|
||
let list_h = total_h * 0.3;
|
||
let mut join_room = None;
|
||
if listed.is_empty() {
|
||
widgets::hint(ui, if self.listing { "Loading rooms..." } else { "No rooms loaded" });
|
||
} else {
|
||
ui.allocate_ui(vec2(ui.available_width(), list_h), |ui| {
|
||
let clicked = widgets::rows(ui, "irc-room-list", listed.len(), rows_h, None, |ui, i| {
|
||
let r = listed[i];
|
||
ui.label(&r.name);
|
||
ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
|
||
ui.label(RichText::new(r.users.to_string()).color(t.text_faint).size(11.0));
|
||
ui.label(RichText::new(ircformat::plain_text(&r.topic)).color(t.text_faint).size(11.0));
|
||
});
|
||
ui.interact(ui.max_rect(), ui.id().with("tip"), Sense::hover())
|
||
.on_hover_text(format!("{}\nClick to join", ircformat::plain_text(if r.topic.is_empty() { &r.name } else { &r.topic })));
|
||
});
|
||
join_room = clicked.map(|i| listed[i].name.clone());
|
||
});
|
||
}
|
||
if let Some(room) = join_room {
|
||
self.join(s, &room);
|
||
}
|
||
|
||
ui.add_space(6.0);
|
||
let users = if is_room(&self.active) { self.users.get(&self.active).cloned() } else { None };
|
||
widgets::section(ui, &format!("Users{}", users.as_ref().map(|u| format!(" ({})", u.len())).unwrap_or_default()));
|
||
match users {
|
||
_ if !is_room(&self.active) => widgets::hint(ui, "No room selected"),
|
||
Some(u) if !u.is_empty() => {
|
||
let clicked = widgets::rows(ui, "irc-users", u.len(), rows_h, None, |ui, i| {
|
||
let nick = display_nick(&u[i]);
|
||
ui.label(RichText::new(nick).color(xterm(ircformat::nick_colour(nick), crate::terminal_themes::get(&s.prefs.terminal_theme))));
|
||
ui.interact(ui.max_rect(), ui.id().with("tip"), Sense::hover()).on_hover_text(format!("{}\nClick to mention", u[i]));
|
||
});
|
||
if let Some(i) = clicked {
|
||
self.insert_mention(display_nick(&u[i]));
|
||
}
|
||
}
|
||
_ => widgets::hint(ui, "No users yet"),
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
fn ev(kind: &str, target: &str) -> irc::Event {
|
||
irc::Event { kind: kind.into(), target: target.into(), text: "hi".into(), ..Default::default() }
|
||
}
|
||
|
||
#[test]
|
||
fn routes_like_irc_js() {
|
||
assert_eq!(route(&ev("rooms", "")), Route::Rooms);
|
||
assert_eq!(route(&ev("users", "#a")), Route::Users("#a".into()));
|
||
assert_eq!(route(&ev("room-list", "")), Route::RoomList);
|
||
assert_eq!(route(&ev("message", "#a")), Route::Line("#a".into()));
|
||
assert_eq!(route(&ev("quit", "")), Route::Line(SERVER.into()));
|
||
}
|
||
|
||
#[test]
|
||
fn events_fill_targets_and_unread() {
|
||
let mut v = IrcView::new("s", &Profile::new(nexus_core::models::Protocol::Irc));
|
||
v.on_event(ev("message", "#rust"));
|
||
v.on_event(ev("nick", ""));
|
||
assert_eq!(v.targets.iter().map(|t| t.name.as_str()).collect::<Vec<_>>(), [SERVER, "#rust"]);
|
||
assert!(v.unread.contains("#rust") && !v.unread.contains(SERVER));
|
||
assert_eq!(v.targets[0].lines.len(), 2); // "Connecting..." + nick
|
||
v.set_active("#rust");
|
||
assert!(v.unread.is_empty());
|
||
for _ in 0..MAX_LINES + 5 {
|
||
v.on_event(ev("message", "#rust"));
|
||
}
|
||
assert_eq!(v.targets[1].lines.len(), MAX_LINES);
|
||
}
|
||
|
||
#[test]
|
||
fn nick_completion() {
|
||
let users = vec!["@Alice".to_string(), "+bob".to_string()];
|
||
assert_eq!(complete("hi @al", &users).as_deref(), Some("hi @Alice "));
|
||
assert_eq!(complete("bo", &users).as_deref(), Some("bob "));
|
||
assert_eq!(complete("hi ", &users), None);
|
||
assert_eq!(complete("x @zz", &users), None);
|
||
assert_eq!(display_nick("~&@%+nick"), "nick");
|
||
}
|
||
|
||
#[test]
|
||
fn palette() {
|
||
let th = crate::terminal_themes::get("charcoal");
|
||
assert_eq!(xterm(16, th), Color32::from_rgb(0, 0, 0));
|
||
assert_eq!(xterm(231, th), Color32::from_rgb(255, 255, 255));
|
||
assert_eq!(xterm(244, th), Color32::from_rgb(128, 128, 128));
|
||
}
|
||
}
|