speed.php

См. документацию.

<?php
 
namespace Bitrix\Landing\Hook\Page;
 
use \Bitrix\Landing\Assets;
use \Bitrix\Landing\Field;
use \Bitrix\Landing\Help;
use \Bitrix\Landing\Landing;
use \Bitrix\Main\Localization\Loc;
 
Loc::loadMessages(__FILE__);
 
class Speed extends \Bitrix\Landing\Hook\Page
{
    const LAZYLOAD_EXTENSION_NAME = 'landing_lazyload';
 
    protected $isNeedPublication = true;

    protected function getMap()
    {
        $helpUrl = Help::getHelpUrl('SPEED');
 
        return [
            'ASSETS' => new Field\Text('ASSETS', []),
            'USE_LAZY' => new Field\Checkbox(
                'USE_LAZY',
                [
                    'title' => Loc::getMessage('LANDING_HOOK_SPEED_USE_LAZY_NEW'),
                    'help' => $helpUrl
                        ? '<a href="' . $helpUrl . '" target="_blank">' .
                        Loc::getMessage('LANDING_HOOK_SPEED_HELP') .
                        '</a>'
                        : '',
                ]
            ),
            'USE_WEBPACK' => new Field\Checkbox(
                'USE_WEBPACK',
                [
                    'title' => ($mess = Loc::getMessage('LANDING_HOOK_SPEED_USE_WEBPACK2'))
                        ? $mess
                        : Loc::getMessage('LANDING_HOOK_SPEED_USE_WEBPACK'),
                ]
            ),
        ];
    }

    public function getTitle()
    {
        return Loc::getMessage('LANDING_HOOK_SPEED_TTILE');
    }

    public function addData($field, $data)
    {
        if (!is_array($data))
        {
            $data = [$data];
        }
        if (
            $this->fields[$field]
            && ($hookData = $this->fields[$field]->getValue())
        )
        {
            $mergedData = array_unique(array_merge(unserialize($hookData, ['allowed_classes' => false]), $data));
        }
        else
        {
            $mergedData = $data;
        }
 
        return serialize($mergedData);
    }

    public function enabled()
    {
        if ($this->issetCustomExec())
        {
            return true;
        }
 
        if ($this->isPage())
        {
            return false;
        }
 
        return true;
    }

    public function exec(): void
    {
        if (Landing::getEditMode())
        {
            $this->disableWebpack();
        }
        else
        {
            $this->execWebpack();
            $this->execLazyLoad();
        }
    }
 
    protected function disableWebpack(): void
    {
        $assets = Assets\Manager::getInstance();
        $assets->setStandartMode();
    }
 
    protected function execWebpack(): void
    {
        $assets = Assets\Manager::getInstance();
        if ($this->fields['USE_WEBPACK']->getValue() !== 'N')
        {
            $assets->setWebpackMode();
        }
        else
        {
            $assets->setStandartMode();
        }
    }
 
    protected function execLazyLoad(): void
    {
        if ($this->fields['USE_LAZY']->getValue() !== 'N')
        {
            $assets = Assets\Manager::getInstance();
            $assets->addAsset(self::LAZYLOAD_EXTENSION_NAME, Assets\Location::LOCATION_BEFORE_ALL);
        }
    }
}