--- /dev/null
+<?php
+
+namespace Drupal\advagg\Asset;
+
+use Drupal\Core\Asset\AssetCollectionGrouperInterface;
+use Drupal\Core\Asset\CssCollectionGrouper as CoreCssCollectionGrouper;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\State\StateInterface;
+
+/**
+ * Groups CSS assets.
+ */
+class CssCollectionGrouper extends CoreCssCollectionGrouper implements AssetCollectionGrouperInterface {
+
+ /**
+ * A config object for the advagg configuration.
+ *
+ * @var \Drupal\Core\Config\Config
+ */
+ protected $config;
+
+ /**
+ * The AdvAgg file status state information storage service.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+
+ protected $advaggFiles;
+
+ /**
+ * Module handler service.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ /**
+ * Construct the AssetDumper instance.
+ *
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * A config factory for retrieving required config objects.
+ * @param \Drupal\Core\State\StateInterface $advagg_files
+ * The AdvAgg file status state information storage service.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler.
+ */
+ public function __construct(ConfigFactoryInterface $config_factory, StateInterface $advagg_files, ModuleHandlerInterface $module_handler) {
+ $this->config = $config_factory->get('advagg.settings');
+ $this->advaggFiles = $advagg_files;
+ $this->moduleHandler = $module_handler;
+ }
+
+ /**
+ * {@inheritdoc}
+ *
+ * Puts multiple items into the same group if they are groupable and if they
+ * are for the same 'browsers' and 'inline'. Items of the 'file' type are
+ * groupable if their 'preprocess' flag is TRUE, and items of the 'external'
+ * type are never groupable.
+ *
+ * Also ensures that the process of grouping items does not change their
+ * relative order. This requirement may result in multiple groups for the same
+ * type, inline, media and browsers, depending on settings if needed to
+ * accommodate other items in between.
+ */
+ public function group(array $css_assets) {
+ if ($this->config->get('core_groups')) {
+ return parent::group($css_assets);
+ }
+ $combine_media = $this->config->get('css.combine_media');
+ $ie_limit_selectors = $this->config->get('css.ie.limit_selectors');
+ $ie_selector_limit = $this->config->get('css.ie.selector_limit');
+ if ($ie_limit_selectors) {
+ $file_info = $this->advaggFiles->getMultiple(array_column($css_assets, 'data'));
+ }
+ $groups = [];
+ // If a group can contain multiple items, we track the information that must
+ // be the same for each item in the group, so that when we iterate the next
+ // item, we can determine if it can be put into the current group, or if a
+ // new group needs to be made for it.
+ $current_group_keys = NULL;
+ // When creating a new group, we pre-increment $i, so by initializing it to
+ // -1, the first group will have index 0.
+ $i = -1;
+ $selectors = 0;
+ foreach ($css_assets as $item) {
+ // The browsers for which the CSS item needs to be loaded is part of the
+ // information that determines when a new group is needed, but the order
+ // of keys in the array doesn't matter, and we don't want a new group if
+ // all that's different is that order.
+ ksort($item['browsers']);
+
+ // If the item can be grouped with other items, set $group_keys to an
+ // array of information that must be the same for all items in its group.
+ // If the item can't be grouped with other items, set $group_keys to
+ // FALSE. We put items into a group that can be aggregated together:
+ // whether they will be aggregated is up to the _drupal_css_aggregate()
+ // function or an
+ // override of that function specified in hook_css_alter(), but regardless
+ // of the details of that function, a group represents items that can be
+ // aggregated. Since a group may be rendered with a single HTML tag, all
+ // items in the group must share the same information that would need to
+ // be part of that HTML tag.
+ switch ($item['type']) {
+ case 'file':
+ // Group file items if their 'preprocess' flag is TRUE.
+ // Help ensure maximum reuse of aggregate files by only grouping
+ // together items that share the same 'group' value.
+ if ($item['preprocess']) {
+ $group_keys = [$item['group'], $item['browsers']];
+ if (!$combine_media) {
+ $group_keys[] = $item['media'];
+ }
+ if (isset($item['inline'])) {
+ $group_keys[] = $item['inline'];
+ }
+ if ($ie_limit_selectors) {
+ if (isset($file_info[$item['data']]['parts'])) {
+ foreach ($file_info[$item['data']]['parts'] as $part) {
+ $i++;
+ $groups[$i] = $item;
+ unset($groups[$i]['data'], $groups[$i]['weight'], $groups[$i]['basename']);
+ $groups[$i]['items'] = [0 => $item];
+ $groups[$i]['items'][0]['data'] = $part['path'];
+ $selectors = $part['selectors'];
+ }
+ }
+ else {
+ $selectors += $file_info[$item['data']]['linecount'];
+ if ($selectors > $ie_selector_limit) {
+ $group_keys['break'] = TRUE;
+ }
+ }
+ }
+ }
+ else {
+ $group_keys = FALSE;
+ if ($ie_limit_selectors && $file_info[$item['data']]['linecount'] > $ie_selector_limit) {
+ foreach ($file_info[$item['data']]['parts'] as $part) {
+ $i++;
+ $groups[$i] = $item;
+ unset($groups[$i]['data'], $groups[$i]['weight'], $groups[$i]['basename']);
+ $groups[$i]['items'] = [0 => $item];
+ $groups[$i]['items'][0]['data'] = $part['path'];
+ }
+ continue;
+ }
+ }
+ break;
+
+ case 'external':
+ // Do not group external items.
+ $group_keys = FALSE;
+ break;
+ }
+ // If the group keys don't match the most recent group we're working with,
+ // then a new group must be made.
+ if ($group_keys !== $current_group_keys) {
+ if ($ie_limit_selectors) {
+ if ($item['type'] == 'file' && $item['preprocess']) {
+ $selectors = $file_info[$item['data']]['linecount'];
+ }
+ else {
+ $selectors = 0;
+ }
+ }
+ unset($group_keys['break']);
+ $i++;
+ // Initialize the new group with the same properties as the first item
+ // being placed into it. The item's 'data', 'weight' and 'basename'
+ // properties are unique to the item and should not be carried over to
+ // the group.
+ $groups[$i] = $item;
+ unset($groups[$i]['data'], $groups[$i]['weight'], $groups[$i]['basename']);
+ if ($combine_media && $item['type'] == 'file' && $item['preprocess']) {
+ unset($groups[$i]['media']);
+ }
+ $groups[$i]['items'] = [];
+ $current_group_keys = $group_keys ? $group_keys : NULL;
+ }
+
+ // Add the item to the current group.
+ $groups[$i]['items'][] = $item;
+ }
+
+ // Run hook so other modules can modify the data.
+ // Call hook_advagg_asset_grouping_alter().
+ $type = 'css';
+ $this->moduleHandler->alter('advagg_aggregate_grouping', $groups, $type);
+
+ return $groups;
+ }
+
+}
projects / yaffs-website / blobdiff