mtui 0.7.1

An extensive Modbus client (TCP, RTU & mock) for your terminal.
Documentation 
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use super::{fuzzy_rank, App};
use crate::config::Column;
use crate::state::{ColumnsParams, Popup, StatusMessage};

impl App {
    pub fn open_columns(&mut self) {
        self.read_mut().popup = Some(Popup::Columns(ColumnsParams::default()));
    }

    pub fn column_matches(&self) -> Vec<Column> {
        let Some(Popup::Columns(c)) = &self.read().popup else {
            return Vec::new();
        };
        fuzzy_rank(&c.query, Column::ALL, |col| col.name())
    }

    pub fn columns_input(&mut self, c: char) {
        if let Some(Popup::Columns(p)) = &mut self.read_mut().popup {
            p.query.push(c);
            p.selected = 0;
        }
    }

    pub fn columns_backspace(&mut self) {
        if let Some(Popup::Columns(p)) = &mut self.read_mut().popup {
            p.query.pop();
            p.selected = 0;
        }
    }

    pub fn columns_toggle_selected(&mut self) {
        let matches = self.column_matches();
        let selected = match &self.read().popup {
            Some(Popup::Columns(p)) => p.selected as usize,
            _ => return,
        };
        if let Some(&column) = matches.get(selected) {
            self.toggle_column(column);
        }
    }

    pub fn columns_move(&mut self, down: bool) {
        let count = self.column_matches().len() as u16;
        if count == 0 {
            return;
        }
        if let Some(Popup::Columns(p)) = &mut self.read_mut().popup {
            let rows = count.div_ceil(2);
            let (col_start, col_len, row) = if p.selected < rows {
                (0, rows, p.selected)
            } else {
                (rows, count - rows, p.selected - rows)
            };
            let new_row = if down {
                (row + 1) % col_len
            } else {
                (row + col_len - 1) % col_len
            };
            p.selected = col_start + new_row;
        }
    }

    pub fn columns_switch(&mut self, right: bool) {
        let count = self.column_matches().len() as u16;
        if count == 0 {
            return;
        }
        if let Some(Popup::Columns(p)) = &mut self.read_mut().popup {
            let rows = count.div_ceil(2);
            let row = if p.selected < rows {
                p.selected
            } else {
                p.selected - rows
            };
            p.selected = if right {
                (rows + row).min(count - 1)
            } else {
                row
            };
        }
    }

    pub fn toggle_graph(&mut self) {
        let p = self.read_mut();
        p.graph = !p.graph;
    }

    pub fn copy_address(&mut self) {
        #[cfg(not(target_arch = "wasm32"))]
        let message = {
            let (_, address) = self.cursor_cell();

            if self.clipboard.is_none() {
                self.clipboard = arboard::Clipboard::new().ok().map(super::ClipboardHandle);
            }
            match self
                .clipboard
                .as_mut()
                .map(|c| c.0.set_text(address.to_string()))
            {
                Some(Ok(())) => StatusMessage::ok(format!("Copied address {address} to clipboard")),
                _ => StatusMessage::err("Clipboard unavailable"),
            }
        };
        #[cfg(target_arch = "wasm32")]
        let message = StatusMessage::err("Clipboard unavailable");
        self.set_read_status(message);
    }

    pub fn toggle_graph_width(&mut self) {
        let p = self.read_mut();
        p.graph_dword = !p.graph_dword;
    }

    pub fn scroll_columns(&mut self, right: bool) {
        const STEP: u16 = 8;
        let max = self.h_max_offset.get();
        let p = self.read_mut();
        // Re-clamp first so a stale offset responds on the first key press.
        let current = p.col_offset.min(max);
        p.col_offset = if right {
            (current + STEP).min(max)
        } else {
            current.saturating_sub(STEP)
        };
    }

    pub fn toggle_column(&mut self, column: Column) {
        self.interpreter.toggle(column);
    }
}