1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

use crate::cell::{Cell, ToCells};

pub trait ToRow {
    fn to_row(&mut self) -> Row;
}

impl<T: ToCells> ToRow for T {
    fn to_row(&mut self) -> Row {
        Row::from(self.to_cells())
    }
}

// This is somewhat expensive, but convenient
impl ToRow for Row {
    fn to_row(&mut self) -> Row {
        self.clone()
    }
}

#[derive(Clone)]
pub struct Row {
    /// Index of the row. This will be set as soon as the row is added to the table
    pub(crate) index: Option<usize>,
    pub(crate) cells: Vec<Cell>,
}

impl Row {
    pub fn new() -> Row {
        Row {
            index: None,
            cells: Vec::new(),
        }
    }

    pub fn from<T: ToCells>(mut cells: T) -> Row {
        Row {
            index: None,
            cells: cells.to_cells(),
        }
    }

    /// Get the longest content width for all cells of this row
    pub fn max_content_widths(&self) -> Vec<usize> {
        // Iterate over all cells
        self.cells
            .iter()
            .map(|cell| {
                // Iterate over all content strings and return a vector of string widths.
                // Each entry represents the longest string width for a cell.
                cell.content
                    .iter()
                    .map(|string| string.len())
                    .max()
                    .unwrap_or(0)
            })
            .collect()
    }

    /// Return the amount of cells on this row.
    pub fn cell_count(&self) -> usize {
        self.cells.len()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_correct_max_content_width() {
        let row = Row::from(&vec![
            "",
            "four",
            "fivef",
            "sixsix",
            "11 but with\na newline",
        ]);

        let max_content_widths = row.max_content_widths();

        assert_eq!(max_content_widths, vec![0, 4, 5, 6, 11]);
    }
}