function ResponsiveImageStyle::sortMappings

Sort mappings by breakpoint ID and multiplier.

File

core/modules/responsive_image/src/Entity/ResponsiveImageStyle.php, line 150

Class

ResponsiveImageStyle

Defines the responsive image style entity.

Namespace

Code

protected function sortMappings() : void {
    $this->keyedImageStyleMappings = NULL;
    $breakpoints = \Drupal::service('breakpoint.manager')->getBreakpointsByGroup($this->getBreakpointGroup());
    if (empty($breakpoints)) {
        return;
    }
    usort($this->image_style_mappings, static function (array $a, array $b) use ($breakpoints) : int {
        $breakpoint_a = $breakpoints[$a['breakpoint_id']] ?? NULL;
        $breakpoint_b = $breakpoints[$b['breakpoint_id']] ?? NULL;
        $first = (double) mb_substr($a['multiplier'], 0, -1) * 100;
        $second = (double) mb_substr($b['multiplier'], 0, -1) * 100;
        return [
            $breakpoint_b ? $breakpoint_b->getWeight() : 0,
            $first,
        ] <=> [
            $breakpoint_a ? $breakpoint_a->getWeight() : 0,
            $second,
        ];
    });
}