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
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
use std::slice::Iter;

use unicode_width::UnicodeWidthStr;

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

/// Each row contains [Cells](crate::Cell) and can be added to a [Table](crate::Table).
#[derive(Clone, Debug)]
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>,
    pub(crate) max_height: Option<usize>,
}

impl Default for Row {
    fn default() -> Self {
        Self::new()
    }
}

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

    /// Add a cell to the row.
    ///
    /// ```rust
    /// use comfy_table::{Row, Cell};
    ///
    /// let mut row = Row::new();
    /// row.add_cell(Cell::new("One"));
    /// ```
    pub fn add_cell(&mut self, cell: Cell) -> &mut Self {
        self.cells.push(cell);

        self
    }

    /// Truncate content of cells which occupies more than X lines of space.
    ///
    /// ```
    /// use comfy_table::{Row, Cell};
    ///
    /// let mut row = Row::new();
    /// row.max_height(5);
    /// ```
    pub fn max_height(&mut self, lines: usize) -> &mut Self {
        self.max_height = Some(lines);

        self
    }

    /// Get the longest content width for all cells of this row
    pub(crate) 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.width())
                    .max()
                    .unwrap_or(0)
            })
            .collect()
    }

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

    /// Returns an iterator over all cells of this row
    pub fn cell_iter(&self) -> Iter<Cell> {
        self.cells.iter()
    }
}

/// Create a Row from any `Into<Cells>`. \
/// [Cells] is a simple wrapper around a `Vec<Cell>`.
///
/// Check the [From] implementations on [Cell] for more information.
///
/// ```rust
/// use comfy_table::{Row, Cell};
///
/// let row = Row::from(vec!["One", "Two", "Three",]);
/// let row = Row::from(vec![
///    Cell::new("One"),
///    Cell::new("Two"),
///    Cell::new("Three"),
/// ]);
/// let row = Row::from(vec![1, 2, 3, 4]);
/// ```
impl<T: Into<Cells>> From<T> for Row {
    fn from(cells: T) -> Row {
        Row {
            index: None,
            cells: cells.into().0,
            max_height: None,
        }
    }
}

#[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]);
    }

    #[test]
    fn test_some_functions() {
        let cells = vec!["one", "two", "three"];
        let mut row = Row::new();
        for cell in cells.iter() {
            row.add_cell(Cell::new(cell));
        }
        assert_eq!(row.cell_count(), cells.len());

        let mut cell_content_iter = cells.iter();
        for cell in row.cell_iter() {
            assert_eq!(
                cell.get_content(),
                cell_content_iter.next().unwrap().to_string()
            );
        }
    }
}