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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::prelude::*;
use crate::StringList;
use std::iter::FromIterator;

impl FromIterator<&'static str> for StringList {
    fn from_iter<I: IntoIterator<Item = &'static str>>(iter: I) -> Self {
        assert_initialized_main_thread!();
        StringList::new(iter.into_iter().collect::<Vec<_>>().as_slice())
    }
}

impl Extend<&'static str> for StringList {
    fn extend<T: IntoIterator<Item = &'static str>>(&mut self, iter: T) {
        self.splice(
            self.n_items(),
            0,
            iter.into_iter().collect::<Vec<_>>().as_slice(),
        );
    }
}

impl FromIterator<String> for StringList {
    fn from_iter<I: IntoIterator<Item = String>>(iter: I) -> Self {
        assert_initialized_main_thread!();
        let string_list = StringList::new(&[]);
        for s in iter {
            string_list.append(&s);
        }
        string_list
    }
}

impl Extend<String> for StringList {
    fn extend<T: IntoIterator<Item = String>>(&mut self, iter: T) {
        for s in iter {
            self.append(&s);
        }
    }
}

impl Default for StringList {
    fn default() -> Self {
        Self::new(&[])
    }
}

#[cfg(test)]
mod tests {
    use super::StringList;
    use crate as gtk4;

    #[test]
    fn test_from_iter() {
        let strings = vec!["hello", "world", "stuff"]
            .into_iter()
            .collect::<StringList>();
        assert_eq!(strings.string(1).unwrap(), "world");

        let strings2 = vec!["hello".to_string(), "world".to_string()]
            .into_iter()
            .collect::<StringList>();

        assert_eq!(strings2.string(1).unwrap(), "world");
    }

    #[test]
    fn test_extend() {
        let mut strings = vec!["hello", "world", "stuff"]
            .into_iter()
            .collect::<StringList>();
        strings.extend(["gtk-rs", "gtk4", "gnome"]);
        assert_eq!(strings.string(4).unwrap(), "gtk4");
    }
}