@use 'sass:map';
@use 'sass:math';
@use 'sass:meta';
@use 'sass:list';
@use 'elevation';

@mixin private-theme-elevation($zValue, $config, $opacity: elevation.$opacity) {
  $foreground: map.get($config, foreground);
  $elevation-color: map.get($foreground, elevation);
  $elevation-color-or-default: if($elevation-color == null, elevation.$color, $elevation-color);

  @include elevation.elevation($zValue, $elevation-color-or-default, $opacity);
}

@mixin private-theme-overridable-elevation($zValue, $config, $opacity: elevation.$opacity) {
  $foreground: map.get($config, foreground);
  $elevation-color: map.get($foreground, elevation);
  $elevation-color-or-default: if($elevation-color == null, elevation.$color, $elevation-color);

  @include elevation.overridable-elevation($zValue, $elevation-color-or-default, $opacity);
}

// If the mat-animation-noop class is present on the components root element,
// prevent non css animations from running.
// NOTE: Currently this mixin should only be used with components that do not
// have any projected content.
@mixin private-animation-noop() {
  // @at-root is used to steps outside of the hierarchy of the scss rules. This is
  // done to allow a class to be added to be added to base of the scss nesting
  // context.
  // For example:
  // .my-root {
  //   .my-subclass {
  //      @include mat-private-animation-noop();
  //    }
  // }
  // results in:
  // ._mat-animation-noopable.my-root .my-subclass { ... }
  @at-root ._mat-animation-noopable#{&} {
    transition: none;
    animation: none;
    @content;
  }
}

// Private polyfill for the `math.div` function from Sass to be used until we can update the
// minimum required Sass version to 1.34.0 or above.
// TODO(crisbeto): replace with `math.div` eventually.
@function private-div($a, $b) {
  @if (meta.function-exists('div', 'math')) {
    @return math.div($a, $b);
  }
  @else {
    @return $a / $b;
  }
}

// Private polyfill for the `list.slash` function from Sass to be used until we can update the
// minimum required Sass version to 1.34.0 or above.
// TODO(crisbeto): replace with `list.slash` eventually.
@function private-slash($a, $b) {
  @if (meta.function-exists('slash', 'list')) {
    @return list.slash($a, $b);
  }
  @else {
    @return #{$a}#{' / '}#{$b};
  }
}
