perspective 2.0.0

A data visualization and analytics component, especially well-suited for large and/or streaming datasets.
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////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2018, the Perspective Authors.
//
// This file is part of the Perspective library, distributed under the terms
// of the Apache License 2.0.  The full license can be found in the LICENSE
// file.

use std::cell::RefCell;
use std::ops::Deref;
use std::rc::Rc;

use derivative::Derivative;
use yew::html::Scope;
use yew::prelude::*;

/// A mutable reference for capturing the `Scope<_>` props arguments, a useful
/// function for tests.
#[derive(Derivative)]
#[derivative(Clone(bound = ""), Default(bound = ""))]
pub struct WeakScope<C: Component>(Rc<RefCell<Option<Scope<C>>>>);

impl<C: Component> Deref for WeakScope<C> {
    type Target = Rc<RefCell<Option<Scope<C>>>>;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl<C: Component> PartialEq for WeakScope<C> {
    fn eq(&self, other: &Self) -> bool {
        Rc::ptr_eq(&self.0, &other.0)
    }
}