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use ::std::collections::HashMap;
use ::tui::backend::Backend;
use ::tui::layout::Rect;
use ::tui::style::{Color, Style};
use ::tui::terminal::Frame;
use ::tui::widgets::{Block, Borders, Row, Widget};
use crate::display::{Bandwidth, DisplayBandwidth, UIState};
use crate::network::{display_connection_string, display_ip_or_host};
use ::std::net::Ipv4Addr;
use std::iter::FromIterator;
const FIRST_WIDTH_BREAKPOINT: u16 = 50;
const SECOND_WIDTH_BREAKPOINT: u16 = 71;
const THIRD_WIDTH_BREAKPOINT: u16 = 95;
const FIRST_COLUMN_WIDTHS: [u16; 4] = [20, 30, 40, 50];
const SECOND_COLUMN_WIDTHS: [u16; 1] = [20];
const THIRD_COLUMN_WIDTHS: [u16; 4] = [10, 20, 20, 20];
fn display_upload_and_download(bandwidth: &impl Bandwidth) -> String {
format!(
"{}/{}",
DisplayBandwidth(bandwidth.get_total_bytes_uploaded() as f64),
DisplayBandwidth(bandwidth.get_total_bytes_downloaded() as f64)
)
}
fn sort_by_bandwidth<'a, T>(
list: &'a mut Vec<(T, &impl Bandwidth)>,
) -> &'a Vec<(T, &'a impl Bandwidth)> {
list.sort_by(|(_, a), (_, b)| {
let a_highest = if a.get_total_bytes_downloaded() > a.get_total_bytes_uploaded() {
a.get_total_bytes_downloaded()
} else {
a.get_total_bytes_uploaded()
};
let b_highest = if b.get_total_bytes_downloaded() > b.get_total_bytes_uploaded() {
b.get_total_bytes_downloaded()
} else {
b.get_total_bytes_uploaded()
};
b_highest.cmp(&a_highest)
});
list
}
pub struct Table<'a> {
title: &'a str,
column_names: &'a [&'a str],
rows: Vec<Vec<String>>,
}
impl<'a> Table<'a> {
pub fn create_connections_table(
state: &UIState,
ip_to_host: &HashMap<Ipv4Addr, String>,
) -> Self {
let mut connections_list = Vec::from_iter(&state.connections);
sort_by_bandwidth(&mut connections_list);
let connections_rows = connections_list
.iter()
.map(|(connection, connection_data)| {
vec![
display_connection_string(&connection, &ip_to_host, &connection_data.interface),
connection_data.process_name.to_string(),
display_upload_and_download(*connection_data),
]
})
.collect();
let connections_title = "Utilization by connection";
let connections_column_names = &["Connection", "Process", "Rate Up/Down"];
Table {
title: connections_title,
column_names: connections_column_names,
rows: connections_rows,
}
}
pub fn create_processes_table(state: &UIState) -> Self {
let mut processes_list = Vec::from_iter(&state.processes);
sort_by_bandwidth(&mut processes_list);
let processes_rows = processes_list
.iter()
.map(|(process_name, data_for_process)| {
vec![
(*process_name).to_string(),
data_for_process.connection_count.to_string(),
display_upload_and_download(*data_for_process),
]
})
.collect();
let processes_title = "Utilization by process name";
let processes_column_names = &["Process", "Connection count", "Rate Up/Down"];
Table {
title: processes_title,
column_names: processes_column_names,
rows: processes_rows,
}
}
pub fn create_remote_addresses_table(
state: &UIState,
ip_to_host: &HashMap<Ipv4Addr, String>,
) -> Self {
let mut remote_addresses_list = Vec::from_iter(&state.remote_addresses);
sort_by_bandwidth(&mut remote_addresses_list);
let remote_addresses_rows = remote_addresses_list
.iter()
.map(|(remote_address, data_for_remote_address)| {
let remote_address = display_ip_or_host(**remote_address, &ip_to_host);
vec![
remote_address,
data_for_remote_address.connection_count.to_string(),
display_upload_and_download(*data_for_remote_address),
]
})
.collect();
let remote_addresses_title = "Utilization by remote address";
let remote_addresses_column_names = &["Remote Address", "Connection Count", "Rate Up/Down"];
Table {
title: remote_addresses_title,
column_names: remote_addresses_column_names,
rows: remote_addresses_rows,
}
}
pub fn render(&self, frame: &mut Frame<impl Backend>, rect: Rect) {
// the second column is only rendered if there is enough room for it
// (over third breakpoint)
let widths = if rect.width < FIRST_WIDTH_BREAKPOINT {
vec![FIRST_COLUMN_WIDTHS[0], THIRD_COLUMN_WIDTHS[0]]
} else if rect.width < SECOND_WIDTH_BREAKPOINT {
vec![FIRST_COLUMN_WIDTHS[1], THIRD_COLUMN_WIDTHS[1]]
} else if rect.width < THIRD_WIDTH_BREAKPOINT {
vec![FIRST_COLUMN_WIDTHS[2], THIRD_COLUMN_WIDTHS[2]]
} else {
vec![
FIRST_COLUMN_WIDTHS[3],
SECOND_COLUMN_WIDTHS[0],
THIRD_COLUMN_WIDTHS[2],
]
};
let column_names = if rect.width < THIRD_WIDTH_BREAKPOINT {
vec![self.column_names[0], self.column_names[2]]
} else {
vec![
self.column_names[0],
self.column_names[1],
self.column_names[2],
]
};
let rows = self.rows.iter().map(|row| {
if rect.width < THIRD_WIDTH_BREAKPOINT {
vec![&row[0], &row[2]]
} else {
vec![&row[0], &row[1], &row[2]]
}
});
let table_rows =
rows.map(|row| Row::StyledData(row.into_iter(), Style::default().fg(Color::White)));
::tui::widgets::Table::new(column_names.into_iter(), table_rows)
.block(Block::default().title(self.title).borders(Borders::ALL))
.header_style(Style::default().fg(Color::Yellow))
.widths(&widths[..])
.style(Style::default().fg(Color::White))
.column_spacing(2)
.render(frame, rect);
}
}
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