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//! This module contains definition of table/row cells stuff
use std::io::{Write, Error};
use std::string::ToString;
/// Represent a table cell containing a string.
///
/// Once created, a cell's content cannot be modified.
/// The cell would have to be replaced by another one
#[derive(Clone, Debug)]
pub struct Cell {
content: Vec<String>,
width: usize
}
impl Cell {
/// Create a new `Cell` initialized with content from `string`
pub fn new(string: &String) -> Cell {
let content: Vec<String> = string.lines_any().map(|ref x| x.to_string()).collect();
let mut width = 0;
for cont in &content {
let l = cont.len();
if l > width {
width = l;
}
}
return Cell {
content: content,
width: width
};
}
/// Return the height of the cell
pub fn get_height(&self) -> usize {
return self.content.len();
}
/// Return the width of the cell
pub fn get_width(&self) -> usize {
return self.width;
}
/// Return a copy of the full string contained in the cell
pub fn get_content(&self) -> String {
return self.content.iter().fold("".to_string(), (|acc, ref item| format!("{}\n{}", acc, item)));
}
/// Print a partial cell to `out`. Since the cell may be multi-lined,
/// `idx` is the line index to print. `col_width` is the column width used to
/// fill the cells with blanks so it fits in the table.
/// If `ìdx` is higher than this cell's height, it will print empty content
pub fn print<T: Write>(&self, out: &mut T, idx: usize, col_width: usize) -> Result<(), Error> {
try!(out.write_all(b" "));
let mut len = 0;
if let Some(content) = self.content.get(idx) {
try!(out.write_all(content.as_bytes()));
len = content.len();
}
try!(out.write_all(&vec![' ' as u8; col_width - len + 1]));
return Ok(());
}
}
impl <'a, T: ToString> From<&'a T> for Cell {
fn from(f: &T) -> Cell {
return Cell::new(&f.to_string());
}
}
impl ToString for Cell {
fn to_string(&self) -> String {
return self.get_content();
}
}
impl Default for Cell {
/// Return a cell initialized with a single empty `String`
fn default() -> Cell {
return Cell {
content: vec!["".to_string(); 1],
width: 0
};
}
}
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