use Construct;
use kernel::windows_kernel::cursor;
use super::base_cursor::ITerminalCursor;

/// This struct will be used for cursor actions in windows terminals performed by winapi.
pub struct WinApiCursor {
    has_moved: bool,
}

impl Construct for WinApiCursor {
    fn new() -> Box<WinApiCursor> {
        Box::from(WinApiCursor { has_moved: false })
    }
}

impl ITerminalCursor for WinApiCursor {
    fn goto(&self, x: u16, y: u16) {
        cursor::set(x, y);
    }

    fn pos(&self) -> (u16, u16) {
        (cursor::xpos(), cursor::ypos())
    }

    fn move_up(&self, count: u16) {
        let xpos = cursor::xpos();
        let ypos = cursor::ypos();

        cursor::set(xpos, ypos - 1);
    }

    fn move_right(&self, count: u16) {
        let xpos = cursor::xpos();
        let ypos = cursor::ypos();

        cursor::set(xpos + 1, ypos);
    }

    fn move_down(&self, count: u16) {
        let xpos = cursor::xpos();
        let ypos = cursor::ypos();

        cursor::set(xpos, ypos + count);
    }

    fn move_left(&self, count: u16) {
        let xpos = cursor::xpos();
        let ypos = cursor::ypos();

        cursor::set(xpos - 1, ypos);
    }
}