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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

//! Animation implementations for various SVG-related types.

use super::{Animate, Procedure};
use crate::values::distance::{ComputeSquaredDistance, SquaredDistance};
use crate::values::generics::svg::SVGStrokeDashArray;

/// <https://www.w3.org/TR/SVG11/painting.html#StrokeDasharrayProperty>
impl<L> Animate for SVGStrokeDashArray<L>
where
    L: Clone + Animate,
{
    #[inline]
    fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> {
        if matches!(procedure, Procedure::Add | Procedure::Accumulate { .. }) {
            // Non-additive.
            return Err(());
        }
        match (self, other) {
            (&SVGStrokeDashArray::Values(ref this), &SVGStrokeDashArray::Values(ref other)) => {
                Ok(SVGStrokeDashArray::Values(
                    super::lists::repeatable_list::animate(this, other, procedure)?,
                ))
            },
            _ => Err(()),
        }
    }
}

impl<L> ComputeSquaredDistance for SVGStrokeDashArray<L>
where
    L: ComputeSquaredDistance,
{
    #[inline]
    fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()> {
        match (self, other) {
            (&SVGStrokeDashArray::Values(ref this), &SVGStrokeDashArray::Values(ref other)) => {
                super::lists::repeatable_list::squared_distance(this, other)
            },
            _ => Err(()),
        }
    }
}