199 lines
5.9 KiB
Rust
199 lines
5.9 KiB
Rust
//! ## Context
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//!
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//! `Context` is the module which provides all the functionalities related to the UI data holder, called Context
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/**
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* MIT License
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*
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* termscp - Copyright (c) 2021 Christian Visintin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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// Dependencies
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extern crate crossterm;
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extern crate tuirealm;
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// Locals
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use super::input::InputHandler;
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use super::store::Store;
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use crate::filetransfer::FileTransferProtocol;
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use crate::system::config_client::ConfigClient;
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// Includes
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use crossterm::event::DisableMouseCapture;
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use crossterm::execute;
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use crossterm::terminal::{EnterAlternateScreen, LeaveAlternateScreen};
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use std::io::{stdout, Stdout};
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use std::path::PathBuf;
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use tuirealm::tui::backend::CrosstermBackend;
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use tuirealm::tui::Terminal;
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/// ## Context
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///
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/// Context holds data structures used by the ui
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pub struct Context {
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pub ft_params: Option<FileTransferParams>,
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pub(crate) config_client: Option<ConfigClient>,
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pub(crate) store: Store,
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pub(crate) input_hnd: InputHandler,
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pub(crate) terminal: Terminal<CrosstermBackend<Stdout>>,
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error: Option<String>,
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}
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/// ### FileTransferParams
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///
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/// Holds connection parameters for file transfers
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pub struct FileTransferParams {
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pub address: String,
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pub port: u16,
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pub protocol: FileTransferProtocol,
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pub username: Option<String>,
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pub password: Option<String>,
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pub entry_directory: Option<PathBuf>,
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}
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impl Context {
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/// ### new
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///
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/// Instantiates a new Context
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pub fn new(config_client: Option<ConfigClient>, error: Option<String>) -> Context {
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// Create terminal
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let mut stdout = stdout();
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assert!(execute!(stdout, EnterAlternateScreen).is_ok());
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Context {
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ft_params: None,
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config_client,
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store: Store::init(),
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input_hnd: InputHandler::new(),
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terminal: Terminal::new(CrosstermBackend::new(stdout)).unwrap(),
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error,
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}
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}
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/// ### set_error
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///
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/// Set context error
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pub fn set_error(&mut self, err: String) {
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self.error = Some(err);
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}
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/// ### get_error
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///
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/// Get error message and remove it from the context
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pub fn get_error(&mut self) -> Option<String> {
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self.error.take()
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}
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/// ### enter_alternate_screen
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///
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/// Enter alternate screen (gui window)
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pub fn enter_alternate_screen(&mut self) {
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match execute!(
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self.terminal.backend_mut(),
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EnterAlternateScreen,
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DisableMouseCapture
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) {
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Err(err) => error!("Failed to enter alternate screen: {}", err),
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Ok(_) => info!("Entered alternate screen"),
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}
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}
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/// ### leave_alternate_screen
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///
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/// Go back to normal screen (gui window)
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pub fn leave_alternate_screen(&mut self) {
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match execute!(
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self.terminal.backend_mut(),
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LeaveAlternateScreen,
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DisableMouseCapture
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) {
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Err(err) => error!("Failed to leave alternate screen: {}", err),
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Ok(_) => info!("Left alternate screen"),
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}
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}
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/// ### clear_screen
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///
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/// Clear terminal screen
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pub fn clear_screen(&mut self) {
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match self.terminal.clear() {
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Err(err) => error!("Failed to clear screen: {}", err),
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Ok(_) => info!("Cleared screen"),
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}
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}
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}
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impl Drop for Context {
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fn drop(&mut self) {
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// Re-enable terminal stuff
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self.leave_alternate_screen();
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}
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}
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impl Default for FileTransferParams {
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fn default() -> Self {
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Self {
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address: String::new(),
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port: 22,
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protocol: FileTransferProtocol::Sftp,
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username: None,
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password: None,
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entry_directory: None,
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use pretty_assertions::assert_eq;
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#[test]
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fn test_ui_context_ft_params() {
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let params: FileTransferParams = FileTransferParams::default();
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assert_eq!(params.address.as_str(), "");
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assert_eq!(params.port, 22);
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assert_eq!(params.protocol, FileTransferProtocol::Sftp);
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assert!(params.username.is_none());
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assert!(params.password.is_none());
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}
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#[test]
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#[cfg(not(feature = "github-actions"))]
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fn test_ui_context() {
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// Prepare stuff
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let mut ctx: Context = Context::new(None, Some(String::from("alles kaput")));
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assert!(ctx.error.is_some());
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assert_eq!(ctx.get_error().unwrap().as_str(), "alles kaput");
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assert!(ctx.error.is_none());
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assert!(ctx.get_error().is_none());
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ctx.set_error(String::from("err"));
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assert!(ctx.error.is_some());
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assert!(ctx.get_error().is_some());
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assert!(ctx.get_error().is_none());
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// Try other methods
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ctx.enter_alternate_screen();
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ctx.clear_screen();
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ctx.leave_alternate_screen();
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drop(ctx);
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}
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}
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