//! Which widget an input reaches.

use std::{cell::RefCell, rc::Rc};

use iris::harness::{Harness, TouchScript};
use iris::prelude::*;

#[test]
fn a_press_reaches_only_the_widget_under_the_cursor() {
    let mut h = Harness::new((400, 200));
    let clicks = Rc::new(RefCell::new(Vec::new()));

    let (on_left, on_right) = (clicks.clone(), clicks.clone());
    let left = rect(Color::RED)
        .width(100)
        .on(CursorSense::click(), move |_, _| {
            on_left.borrow_mut().push("left")
        })
        .add(&mut h.rsc);
    let right = rect(Color::BLUE)
        .on(CursorSense::click(), move |_, _| {
            on_right.borrow_mut().push("right")
        })
        .add(&mut h.rsc);
    h.set_root((left, right).span(Dir::RIGHT));

    h.click((50, 100));
    assert_eq!(*clicks.borrow(), ["left"]);

    h.click((300, 100));
    assert_eq!(*clicks.borrow(), ["left", "right"]);
}

#[test]
fn hover_ends_when_the_cursor_leaves_the_window() {
    let mut h = Harness::new((400, 200));
    let hovered = Rc::new(RefCell::new(0));
    let ended = Rc::new(RefCell::new(0));

    let (h_count, e_count) = (hovered.clone(), ended.clone());
    let widget = rect(Color::RED)
        .on(CursorSense::HoverStart, move |_, _| {
            *h_count.borrow_mut() += 1
        })
        .on(CursorSense::HoverEnd, move |_, _| {
            *e_count.borrow_mut() += 1
        })
        .add(&mut h.rsc);
    h.set_root(widget);

    h.move_to((200, 100));
    assert_eq!((*hovered.borrow(), *ended.borrow()), (1, 0));

    // A second sample inside the same widget is not a second hover.
    h.move_to((210, 100));
    assert_eq!((*hovered.borrow(), *ended.borrow()), (1, 0));

    h.leave();
    assert_eq!((*hovered.borrow(), *ended.borrow()), (1, 1));
}

#[test]
fn a_recorded_gesture_presses_where_it_says() {
    let mut h = Harness::new((400, 200));
    let clicks = Rc::new(RefCell::new(Vec::new()));

    let (on_left, on_right) = (clicks.clone(), clicks.clone());
    let left = rect(Color::RED)
        .width(100)
        .on(CursorSense::click(), move |_, _| {
            on_left.borrow_mut().push("left")
        })
        .add(&mut h.rsc);
    let right = rect(Color::BLUE)
        .on(CursorSense::click(), move |_, _| {
            on_right.borrow_mut().push("right")
        })
        .add(&mut h.rsc);
    h.set_root((left, right).span(Dir::RIGHT));

    let script = TouchScript::parse("0 down 300 100\n80 up 300 100").unwrap();
    h.replay(&script);

    assert_eq!(*clicks.borrow(), ["right"]);
}