diff --git a/.github/workflows/rust.yaml b/.github/workflows/rust.yaml new file mode 100644 index 0000000..e994afb --- /dev/null +++ b/.github/workflows/rust.yaml @@ -0,0 +1,35 @@ +name: Rust ✅ + +on: + workflow_dispatch: + push: + paths: + - "*" + pull_request: + paths: + - "*" + +env: + CARGO_TERM_COLOR: always + +jobs: + check: + runs-on: ubuntu-latest + steps: + - name: Checkout 🛒 + uses: actions/checkout@v3 + + - name: Toolchain 🧰 + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: stable + components: rustfmt, clippy + override: true + + - name: Check ✅ + uses: actions-rs/cargo@v1 + continue-on-error: false + with: + command: check + args: --verbose diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..1de0ed8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +# Rust +target +Cargo.lock + +# CLion +.idea diff --git a/.license_template b/.license_template new file mode 100644 index 0000000..e30635e --- /dev/null +++ b/.license_template @@ -0,0 +1,16 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) {20\d{2}(-20\d{2})?} Fuwn +// SPDX-License-Identifier: GPL-3.0-only diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..24451e3 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,19 @@ +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[package] +name = "syndey" +version = "0.1.0" +authors = ["Fuwn "] +edition = "2021" +description = "Vim-like, Command-line Gemini Client" +readme = "README.md" +homepage = "https://github.com/gemrest/sydney" +repository = "https://github.com/gemrest/sydney" +license = "GPL-3.0-only" +keywords = ["gemini", "client"] + +[dependencies] +germ = { version = "0.3.3", default-features = false, features = ["request", "ast"] } # Gemini +url = "2.2.2" # URL +tui = "0.18.0" # Terminal User Interface +crossterm = "0.24.0" # Cross-platform Terminal diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile.toml b/Makefile.toml new file mode 100644 index 0000000..1ede7b6 --- /dev/null +++ b/Makefile.toml @@ -0,0 +1,33 @@ +[tasks.fmt] +args = ["fmt"] +command = "cargo" +toolchain = "nightly" +workspace = false + +[tasks.check] +args = ["check", "--all-features"] +command = "cargo" +workspace = false + +[tasks.clippy] +args = ["clippy", "--all-features"] +command = "cargo" +workspace = false + +[tasks.test] +args = ["test", "--all-features"] +command = "cargo" +workspace = false + +[tasks.checkf] +dependencies = ["fmt", "check"] +workspace = false + +[tasks.checkfc] +dependencies = ["fmt", "check", "clippy"] +workspace = false + +[tasks.run] +args = ["run", "--", "${@}"] +command = "cargo" +workspace = false diff --git a/README.md b/README.md new file mode 100644 index 0000000..1a20618 --- /dev/null +++ b/README.md @@ -0,0 +1,43 @@ +# Sydney + +[![crates.io](https://img.shields.io/crates/v/sydney.svg)](https://crates.io/crates/sydney) +[![github.com](https://github.com/gemrest/sydney/actions/workflows/rust.yaml/badge.svg?branch=main)](https://github.com/gemrest/sydney/actions/workflows/rust.yaml) + +Sydney is a Vim-like, command-line Gemini client. + +Sydney has a beautiful, intuitive, and powerful command-line interface; +including: + +- Vim-like keybindings +- Vim-like commands +- Intuitive link handling +- Understandable errors +- Customizable UI + +## Usage + +### Installation + +```shell +cargo install sydney --force +``` + +### Help + +```shell +usage: syndey [option, capsule_uri] +Options: + --version, -v show version text + --help, -h show help text + +Sample invocations: + syndey gemini://gem.rest/ + syndey --help + +Report bugs to https://github.com/gemrest/sydney/issues + +``` + +## License + +This project is licensed with the [GNU General Public License v3.0](https://github.com/gemrest/sydney/blob/main/LICENSE). diff --git a/rust-toolchain.toml b/rust-toolchain.toml new file mode 100644 index 0000000..60883f4 --- /dev/null +++ b/rust-toolchain.toml @@ -0,0 +1,2 @@ +[toolchain] +channel = "1.59.0" diff --git a/rustfmt.toml b/rustfmt.toml new file mode 100644 index 0000000..1dd4c90 --- /dev/null +++ b/rustfmt.toml @@ -0,0 +1,30 @@ +condense_wildcard_suffixes = true +edition = "2021" +enum_discrim_align_threshold = 20 +# error_on_line_overflow = true +# error_on_unformatted = true +fn_single_line = true +force_multiline_blocks = true +format_code_in_doc_comments = true +format_macro_matchers = true +format_strings = true +imports_layout = "HorizontalVertical" +license_template_path = ".license_template" +max_width = 80 +match_arm_blocks = false +imports_granularity = "Crate" +newline_style = "Unix" +normalize_comments = true +normalize_doc_attributes = true +reorder_impl_items = true +group_imports = "StdExternalCrate" +reorder_modules = true +report_fixme = "Always" +# report_todo = "Always" +struct_field_align_threshold = 20 +struct_lit_single_line = false +tab_spaces = 2 +use_field_init_shorthand = true +use_try_shorthand = true +where_single_line = true +wrap_comments = true diff --git a/src/app.rs b/src/app.rs new file mode 100644 index 0000000..278a96c --- /dev/null +++ b/src/app.rs @@ -0,0 +1,203 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +use std::time::{Duration, Instant}; + +use crossterm::event; +use germ::request::Status; +use url::Url; + +use crate::{input::Mode as InputMode, stateful_list::StatefulList}; + +pub struct App { + pub items: StatefulList<(Vec, Option)>, + pub input: String, + pub input_mode: InputMode, + pub command_stroke_history: Vec, + pub command_history: Vec, + pub command_history_cursor: usize, + pub error: Option, + pub url: Url, + pub capsule_history: Vec, + pub previous_capsule: Option, + pub response_input: String, + pub accept_response_input: bool, + pub response_input_text: String, + pub wrap_at: usize, +} +impl App { + pub fn new() -> Self { + let url = Url::parse("gemini://gemini.circumlunar.space/").unwrap(); + + let mut app = Self { + response_input: String::new(), + error: None, + command_stroke_history: Vec::new(), + input: String::new(), + input_mode: InputMode::Normal, + items: StatefulList::with_items(Vec::new()), + command_history: vec![], + command_history_cursor: 0, + url, + capsule_history: vec![], + previous_capsule: None, + accept_response_input: false, + response_input_text: "".to_string(), + wrap_at: 80, + }; + + app.make_request(); + + app + } + + pub fn set_url(&mut self, url: Url) { + self.previous_capsule = Some(self.url.clone()); + self.url = url; + } + + pub fn make_request(&mut self) { + self.items = StatefulList::with_items({ + let mut items = vec![]; + + match germ::request::request(&self.url) { + Ok(mut response) => { + if response.status() == &Status::TemporaryRedirect + || response.status() == &Status::PermanentRedirect + { + self.url = Url::parse(&if response.meta().starts_with('/') { + format!( + "gemini://{}{}", + self.url.host_str().unwrap(), + response.meta() + ) + } else if response.meta().starts_with("gemini://") { + response.meta().to_string() + } else if !response.meta().starts_with('/') + && !response.meta().starts_with("gemini://") + { + format!( + "{}/{}", + self.url.to_string().trim_end_matches('/'), + response.meta() + ) + } else { + self.url.to_string() + }) + .unwrap(); + + response = germ::request::request(&self.url).unwrap(); + } + + if response.status() == &Status::Input + || response.status() == &Status::SensitiveInput + { + self.accept_response_input = true; + self.response_input_text = response.meta().to_string(); + } + + if let Some(content) = response.content().clone() { + for line in content.lines().clone() { + let line = line.replace('\t', " "); + let mut parts = line.split_whitespace(); + let lines = if line.is_empty() { + vec![line.to_string()] + } else { + line + .as_bytes() + .chunks(self.wrap_at) + .map(|buf| { + #[allow(unsafe_code)] + unsafe { std::str::from_utf8_unchecked(buf) }.to_string() + }) + .collect::>() + }; + + if let (Some("=>"), Some(to)) = (parts.next(), parts.next()) { + items.push((lines, Some(to.to_string()))); + } else { + items.push((lines, None)); + } + } + } else if response.status() != &Status::Input + && response.status() != &Status::SensitiveInput + { + items.push((vec![response.meta().to_string()], None)); + + self.error = Some(response.meta().to_string()); + } + + if let Some(last_url) = self.capsule_history.last() { + if last_url.to_string() != self.url.to_string() { + self.capsule_history.push(self.url.clone()); + } + } else { + self.capsule_history.push(self.url.clone()); + } + } + Err(error) => { + self.error = Some(error.to_string()); + + return; + } + } + + items + }); + } + + pub fn run( + terminal: &mut tui::Terminal, + mut app: Self, + tick_rate: Duration, + ) -> std::io::Result<()> { + let mut last_tick = Instant::now(); + loop { + terminal.draw(|f| crate::ui::ui(f, &mut app))?; + + let timeout = tick_rate + .checked_sub(last_tick.elapsed()) + .unwrap_or_else(|| Duration::from_secs(0)); + + if event::poll(timeout)? { + if let event::Event::Key(key) = event::read()? { + if crate::input::handle_key_strokes(&mut app, key) { + return Ok(()); + } + } + } + + if last_tick.elapsed() >= tick_rate { + last_tick = Instant::now(); + } + } + } + + pub fn go_back(&mut self) { + if let Some(url) = self.capsule_history.pop() { + if url == self.url { + if let Some(url) = self.capsule_history.pop() { + self.set_url(url); + } + } else { + self.set_url(url); + } + + self.make_request(); + } + } +} diff --git a/src/command.rs b/src/command.rs new file mode 100644 index 0000000..4dc3615 --- /dev/null +++ b/src/command.rs @@ -0,0 +1,49 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +pub enum Command { + Quit, + Open(Option), + Unknown, + Wrap(usize, Option), +} +impl From for Command { + fn from(s: String) -> Self { + let mut tokens = s.split(' '); + + match tokens.next() { + Some("open" | "o") => Self::Open(tokens.next().map(ToString::to_string)), + Some("quit" | "q") => Self::Quit, + Some("wrap") => + tokens.next().map_or_else( + || { + Self::Wrap( + 80, + Some("Missing width argument to wrap command".to_string()), + ) + }, + |at| { + match at.parse() { + Ok(at_parsed) => Self::Wrap(at_parsed, None), + Err(error) => Self::Wrap(80, Some(error.to_string())), + } + }, + ), + _ => Self::Unknown, + } + } +} diff --git a/src/input.rs b/src/input.rs new file mode 100644 index 0000000..9a4c3e6 --- /dev/null +++ b/src/input.rs @@ -0,0 +1,267 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +use crossterm::event::KeyCode; +use url::Url; + +use crate::command::Command; + +pub enum Mode { + Normal, + Editing, +} + +fn handle_input_response( + mut app: &mut crate::App, + key: crossterm::event::KeyEvent, +) -> bool { + match key.code { + KeyCode::Enter => { + let new_url = match app.url.to_string().split('?').next() { + Some(base_url) => { + format!("{}?{}", base_url, app.response_input) + } + None => "".to_string(), + }; + + if new_url.is_empty() { + app.error = Some("Invalid base URL".to_string()); + + return false; + } + + match Url::parse(&new_url) { + Ok(url) => { + app.set_url(url); + app.make_request(); + app.response_input.clear(); + app.response_input_text.clear(); + + app.accept_response_input = false; + } + Err(error) => { + app.error = Some(error.to_string()); + } + } + } + KeyCode::Esc => { + app.accept_response_input = false; + + app.response_input.clear(); + app.response_input_text.clear(); + app.go_back(); + } + KeyCode::Char(c) => { + app.response_input.push(c); + } + KeyCode::Backspace => { + app.response_input.pop(); + } + _ => {} + } + + false +} + +fn handle_normal_input( + mut app: &mut crate::App, + key: crossterm::event::KeyEvent, +) -> bool { + match key.code { + KeyCode::Char(':') => { + app.input.push(':'); + + app.input_mode = Mode::Editing; + app.error = None; + } + KeyCode::Esc => app.items.unselect(), + KeyCode::Down | KeyCode::Char('j') => { + app.items.next(); + + app.error = None; + } + KeyCode::Up | KeyCode::Char('k') => { + app.items.previous(); + + app.error = None; + } + KeyCode::Char('h') | KeyCode::Left => { + app.go_back(); + } + KeyCode::Char('l') | KeyCode::Right => { + if let Some(url) = app.previous_capsule.clone() { + app.set_url(url); + + app.previous_capsule = None; + + app.make_request(); + } + } + KeyCode::Char('G') => app.items.last(), + KeyCode::Char('g') => + if app.command_stroke_history.contains(&key.code) { + app.items.first(); + app.command_stroke_history.clear(); + } else if app.command_stroke_history.is_empty() { + app.command_stroke_history.push(key.code); + }, + KeyCode::Backspace => app.error = None, + KeyCode::Enter => { + if let Some(link) = &app.items.items[app.items.selected].1 { + if !link.starts_with("gemini://") && link.contains("://") { + } else { + let the_url = &if link.starts_with('/') { + format!("gemini://{}{}", app.url.host_str().unwrap(), link) + } else if link.starts_with("gemini://") { + link.to_string() + } else if !link.starts_with('/') && !link.starts_with("gemini://") { + format!("{}/{}", app.url.to_string().trim_end_matches('/'), link) + } else { + app.url.to_string() + }; + + app.set_url(Url::parse(the_url).unwrap()); + app.make_request(); + } + } + } + _ => {} + } + + false +} + +fn handle_editing_input( + mut app: &mut crate::App, + key: crossterm::event::KeyEvent, +) -> bool { + match key.code { + KeyCode::Enter => { + if let Some(command) = app.input.get(1..) { + app.command_history.reverse(); + app.command_history.push(command.to_string()); + app.command_history.reverse(); + } + + match Command::from( + app.input.to_string().get(1..).unwrap_or("").to_string(), + ) { + Command::Quit => return true, + Command::Open(to) => { + if let Some(to) = to { + // Remove colon + app.input = app.input.chars().rev().collect(); + + app.input.pop(); + + app.input = app.input.chars().rev().collect(); + app.set_url( + Url::parse(&if to.starts_with("gemini://") { + to + } else { + format!("gemini://{}", to) + }) + .unwrap(), + ); + + app.make_request(); + } else { + app.error = Some("No URL provided for open command".to_string()); + } + } + Command::Unknown => + if app.input == ":" { + app.input_mode = Mode::Normal; + } else { + app.error = Some(format!( + "\"{}\" is not a valid command", + app.input.to_string().get(1..).unwrap_or("") + )); + }, + Command::Wrap(at, error) => + if let Some(error) = error { + app.error = Some(error); + } else { + app.error = None; + app.wrap_at = at; + }, + } + + app.input_mode = Mode::Normal; + app.command_history_cursor = 0; + + app.input.clear(); + } + KeyCode::Char(c) => { + app.input.push(c); + } + KeyCode::Up => { + if let Some(command) = app.command_history.get(app.command_history_cursor) + { + app.input = format!(":{}", command); + + if app.command_history_cursor + 1 < app.command_history.len() { + app.command_history_cursor += 1; + } + } + } + KeyCode::Down => { + let mut dead_set = false; + + if app.command_history_cursor > 0 { + app.command_history_cursor -= 1; + } else { + dead_set = true; + } + + if let Some(command) = app.command_history.get(app.command_history_cursor) + { + app.input = format!(":{}", command); + } + + if dead_set { + app.input = ":".to_string(); + } + } + KeyCode::Backspace => { + app.input.pop(); + } + KeyCode::Esc => { + app.input_mode = Mode::Normal; + + app.input.clear(); + } + _ => {} + } + + false +} + +pub fn handle_key_strokes( + app: &mut crate::App, + key: crossterm::event::KeyEvent, +) -> bool { + match app.input_mode { + Mode::Normal => + if app.accept_response_input { + handle_input_response(app, key) + } else { + handle_normal_input(app, key) + }, + Mode::Editing => handle_editing_input(app, key), + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..77841a9 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,106 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +#![deny( + warnings, + nonstandard_style, + unused, + future_incompatible, + rust_2018_idioms, + unsafe_code, + clippy::all, + clippy::nursery, + clippy::pedantic +)] +#![recursion_limit = "128"] + +mod app; +mod command; +mod input; +mod stateful_list; +mod ui; + +use app::App; +use crossterm::{event, execute, terminal}; + +fn main() -> Result<(), Box> { + let mut args = std::env::args(); + let mut app = App::new(); + + if let Some(arg) = args.nth(1) { + match arg.as_str() { + "--version" | "-v" => { + println!("{}", env!("CARGO_PKG_VERSION")); + + return Ok(()); + } + "--help" | "-h" => { + println!( + r#"usage: {} [option, capsule_uri] +Options: + --version, -v show version text + --help, -h show help text + +Sample invocations: + {0} gemini://gem.rest/ + {0} --help + +Report bugs to https://github.com/gemrest/sydney/issues"#, + args + .next() + .unwrap_or_else(|| env!("CARGO_PKG_NAME").to_string()) + ); + + return Ok(()); + } + _ => { + app.url = url::Url::parse(&arg)?; + + app.make_request(); + } + } + } + + terminal::enable_raw_mode()?; + + let mut stdout = std::io::stdout(); + + execute!( + stdout, + terminal::EnterAlternateScreen, + event::EnableMouseCapture + )?; + + let mut terminal = + tui::Terminal::new(tui::backend::CrosstermBackend::new(stdout))?; + let result = + App::run(&mut terminal, app, std::time::Duration::from_millis(250)); + + terminal::disable_raw_mode()?; + execute!( + terminal.backend_mut(), + terminal::LeaveAlternateScreen, + event::DisableMouseCapture + )?; + terminal.show_cursor()?; + + if let Err(err) = result { + println!("{:?}", err); + } + + Ok(()) +} diff --git a/src/stateful_list.rs b/src/stateful_list.rs new file mode 100644 index 0000000..50c71cc --- /dev/null +++ b/src/stateful_list.rs @@ -0,0 +1,82 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +//! + +use tui::widgets::ListState; + +pub struct StatefulList { + pub state: ListState, + pub items: Vec, + pub selected: usize, +} + +impl StatefulList { + pub fn with_items(items: Vec) -> Self { + Self { + state: ListState::default(), + items, + selected: 0, + } + } + + pub fn next(&mut self) { + let i = match self.state.selected() { + Some(i) => + if i >= self.items.len() - 1 { + 0 + } else { + i + 1 + }, + None => 0, + }; + + self.selected = i; + + self.state.select(Some(i)); + } + + pub fn previous(&mut self) { + let i = match self.state.selected() { + Some(i) => + if i == 0 { + self.items.len() - 1 + } else { + i - 1 + }, + None => 0, + }; + + self.selected = i; + + self.state.select(Some(i)); + } + + pub fn last(&mut self) { + self.state.select(Some(self.items.len() - 1)); + + self.selected = self.items.len() - 1; + } + + pub fn first(&mut self) { + self.state.select(Some(0)); + + self.selected = 0; + } + + pub fn unselect(&mut self) { self.state.select(None); } +} diff --git a/src/ui.rs b/src/ui.rs new file mode 100644 index 0000000..b43a119 --- /dev/null +++ b/src/ui.rs @@ -0,0 +1,142 @@ +// This file is part of Germ . +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, version 3. +// +// This program is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// Copyright (C) 2022-2022 Fuwn +// SPDX-License-Identifier: GPL-3.0-only + +use tui::{ + layout::{Constraint, Direction, Layout, Rect}, + style::{Color, Style}, + widgets, + widgets::{ListItem, Paragraph}, +}; + +pub fn ui( + f: &mut tui::Frame<'_, B>, + app: &mut crate::App, +) { + let chunks = Layout::default() + .direction(Direction::Vertical) + .constraints( + [ + Constraint::Percentage(95), + Constraint::Percentage(4), + Constraint::Percentage(1), + ] + .as_ref(), + ) + .split(f.size()); + + let items: Vec> = app + .items + .items + .iter() + .map(|(text_lines, _link)| { + let mut spans = vec![]; + + for line in text_lines { + spans.push(tui::text::Spans::from(line.as_str())); + } + + ListItem::new(spans) + }) + .collect(); + + let items = widgets::List::new(items).highlight_style( + Style::default() + .bg(Color::White) + .fg(Color::Black) + .add_modifier(tui::style::Modifier::BOLD), + ); + + f.render_stateful_widget(items, chunks[0], &mut app.items.state); + f.render_widget( + Paragraph::new(app.url.to_string()) + .style(Style::default().bg(Color::White).fg(Color::Black)), + chunks[1], + ); + + if let Some(error) = app.error.as_ref() { + f.render_widget( + Paragraph::new(&**error).style(Style::default().bg(Color::Red)), + chunks[2], + ); + } else if !app.input.is_empty() { + f.render_widget(Paragraph::new(&*app.input), chunks[2]); + } + + if app.accept_response_input { + let block = widgets::Block::default() + .title(app.url.to_string()) + .borders(widgets::Borders::ALL); + let area = centered_rect(60, 20, f.size()); + + f.render_widget(widgets::Clear, area); + f.render_widget(block.clone(), area); + f.render_widget( + Paragraph::new(format!( + "{} {}", + app.response_input_text.trim(), + app.response_input + )) + .wrap(widgets::Wrap { + trim: false + }), + block.inner(area), + ); + } + + if let Some(error) = &app.error { + let block = widgets::Block::default() + .title("Sydney") + .borders(widgets::Borders::ALL) + .style(Style::default().bg(Color::Cyan)); + let area = centered_rect(60, 20, f.size()); + + f.render_widget(widgets::Clear, area); + f.render_widget(block.clone(), area); + f.render_widget( + Paragraph::new(error.to_string()).wrap(widgets::Wrap { + trim: false + }), + block.inner(area), + ); + } +} + +fn centered_rect(percent_x: u16, percent_y: u16, r: Rect) -> Rect { + let popup_layout = Layout::default() + .direction(Direction::Vertical) + .constraints( + [ + Constraint::Percentage((100 - percent_y) / 2), + Constraint::Percentage(percent_y), + Constraint::Percentage((100 - percent_y) / 2), + ] + .as_ref(), + ) + .split(r); + + Layout::default() + .direction(Direction::Horizontal) + .constraints( + [ + Constraint::Percentage((100 - percent_x) / 2), + Constraint::Percentage(percent_x), + Constraint::Percentage((100 - percent_x) / 2), + ] + .as_ref(), + ) + .split(popup_layout[1])[1] +}