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use std::fmt::{self, Display, Formatter};
use std::result;
use crate::queue;
use super::{Attribute, Color, Colorize, ObjectStyle, ResetColor, SetAttr, SetBg, SetFg, Styler};
#[derive(Clone)]
pub struct StyledObject<D: Display + Clone> {
pub object_style: ObjectStyle,
pub content: D,
}
impl<'a, D: Display + 'a + Clone> StyledObject<D> {
pub fn with(mut self, foreground_color: Color) -> StyledObject<D> {
self.object_style = self.object_style.fg(foreground_color);
self
}
pub fn on(mut self, background_color: Color) -> StyledObject<D> {
self.object_style = self.object_style.bg(background_color);
self
}
pub fn attr(mut self, attr: Attribute) -> StyledObject<D> {
self.object_style.add_attr(attr);
self
}
}
impl<D: Display + Clone> Display for StyledObject<D> {
fn fmt(&self, f: &mut Formatter) -> result::Result<(), fmt::Error> {
let mut reset = false;
if let Some(bg) = self.object_style.bg_color {
queue!(f, SetBg(bg)).map_err(|_| fmt::Error)?;
reset = true;
}
if let Some(fg) = self.object_style.fg_color {
queue!(f, SetFg(fg)).map_err(|_| fmt::Error)?;
reset = true;
}
for attr in self.object_style.attrs.iter() {
queue!(f, SetAttr(*attr)).map_err(|_| fmt::Error)?;
reset = true;
}
fmt::Display::fmt(&self.content, f)?;
if reset {
queue!(f, ResetColor).map_err(|_| fmt::Error)?;
}
Ok(())
}
}
impl<D: Display + Clone> Colorize<D> for StyledObject<D> {
def_color!(fg_color: black => Color::Black);
def_color!(fg_color: dark_grey => Color::DarkGrey);
def_color!(fg_color: red => Color::Red);
def_color!(fg_color: dark_red => Color::DarkRed);
def_color!(fg_color: green => Color::Green);
def_color!(fg_color: dark_green => Color::DarkGreen);
def_color!(fg_color: yellow => Color::Yellow);
def_color!(fg_color: dark_yellow => Color::DarkYellow);
def_color!(fg_color: blue => Color::Blue);
def_color!(fg_color: dark_blue => Color::DarkBlue);
def_color!(fg_color: magenta => Color::Magenta);
def_color!(fg_color: dark_magenta => Color::DarkMagenta);
def_color!(fg_color: cyan => Color::Cyan);
def_color!(fg_color: dark_cyan => Color::DarkCyan);
def_color!(fg_color: white => Color::White);
def_color!(fg_color: grey => Color::Grey);
def_color!(bg_color: on_black => Color::Black);
def_color!(bg_color: on_dark_grey => Color::DarkGrey);
def_color!(bg_color: on_red => Color::Red);
def_color!(bg_color: on_dark_red => Color::DarkRed);
def_color!(bg_color: on_green => Color::Green);
def_color!(bg_color: on_dark_green => Color::DarkGreen);
def_color!(bg_color: on_yellow => Color::Yellow);
def_color!(bg_color: on_dark_yellow => Color::DarkYellow);
def_color!(bg_color: on_blue => Color::Blue);
def_color!(bg_color: on_dark_blue => Color::DarkBlue);
def_color!(bg_color: on_magenta => Color::Magenta);
def_color!(bg_color: on_dark_magenta => Color::DarkMagenta);
def_color!(bg_color: on_cyan => Color::Cyan);
def_color!(bg_color: on_dark_cyan => Color::DarkCyan);
def_color!(bg_color: on_white => Color::White);
def_color!(bg_color: on_grey => Color::Grey);
}
impl<D: Display + Clone> Styler<D> for StyledObject<D> {
def_attr!(reset => Attribute::Reset);
def_attr!(bold => Attribute::Bold);
def_attr!(underlined => Attribute::Underlined);
def_attr!(reverse => Attribute::Reverse);
def_attr!(dim => Attribute::Dim);
def_attr!(italic => Attribute::Italic);
def_attr!(negative => Attribute::Reverse);
def_attr!(slow_blink => Attribute::SlowBlink);
def_attr!(rapid_blink => Attribute::RapidBlink);
def_attr!(hidden => Attribute::Hidden);
def_attr!(crossed_out => Attribute::CrossedOut);
}
#[cfg(test)]
mod tests {
use super::{Attribute, Color, ObjectStyle};
#[test]
fn test_set_fg_bg_add_attr() {
let mut object_style = ObjectStyle::new().fg(Color::Blue).bg(Color::Red);
object_style.add_attr(Attribute::Reset);
let mut styled_object = object_style.apply_to("test");
styled_object = styled_object
.with(Color::Green)
.on(Color::Magenta)
.attr(Attribute::NoItalic);
assert_eq!(styled_object.object_style.fg_color, Some(Color::Green));
assert_eq!(styled_object.object_style.bg_color, Some(Color::Magenta));
assert_eq!(styled_object.object_style.attrs.len(), 2);
assert_eq!(styled_object.object_style.attrs[0], Attribute::Reset);
assert_eq!(styled_object.object_style.attrs[1], Attribute::NoItalic);
}
}