slick.api.php in Slick Carousel 8
Same filename and directory in other branches
Hooks and API provided by the Slick module.
File
slick.api.phpView source
<?php
/**
* @file
* Hooks and API provided by the Slick module.
*/
use Drupal\slick\Entity\Slick;
/**
* @defgroup slick_api Slick API
* @{
* Information about the Slick usages.
*
* Modules may implement any of the available hooks to interact with Slick.
*
* Slick may be configured using the web interface via sub-modules.
* However below is a few sample coded ones. The simple API is to achieve
* consistent markups working for various skins, and layouts for both coded
* and sub-modules implementations.
*
* The expected parameters are:
* - items: A required array of slick contents: text, image or media.
* - options: An optional array of key:value pairs of custom JS options.
* - optionset: An optional optionset object to avoid multiple invocations.
* - settings: An array of key:value pairs of HTML/layout related settings
* which may contain optionset ID if no optionset above is provided.
*
* @see \Drupal\slick\Plugin\Field\FieldFormatter\SlickImageFormatter
* @see \Drupal\slick_views\Plugin\views\style\SlickViews
*
* @section sec_quick Quick sample #1
*
* Returns the renderable array of a slick instance.
* @code
* function my_module_render_slick() {
* // Invoke the plugin class, or use a DI service container accordingly.
* $slick = \Drupal::service('slick.manager');
*
* // Access the formatter service for image-related methods:
* $formatter = \Drupal::service('slick.formatter');
*
* $build = [];
*
* // Caption contains: alt, data, link, overlay, title.
* // Each item has keys: slide, caption, settings.
* $items[] = [
* // Use $formatter->getImage($element) to have lazyLoad where $element
* // contains:
* // item: Drupal\image\Plugin\Field\FieldType\ImageItem.
* 'slide' => '<img src="https://drupal.org/files/One.gif" />',
* 'caption' => ['title' => t('Description #1')],
* ];
*
* $items[] = [
* 'slide' => '<img src="https://drupal.org/files/Two.gif" />',
* 'caption' => ['title' => t('Description #2')],
* ];
*
* $items[] = [
* 'slide' => '<img src="https://drupal.org/files/Three.gif" />',
* 'caption' => ['title' => t('Description #3')],
* ];
*
* // Pass the $items to the array.
* $build['items'] = $items;
*
* // If no optionset name is provided via $build['settings'], slick will
* // fallback to 'default'.
* // Optionally override 'default' optionset with custom JS options.
* $build['options'] = [
* 'autoplay' => TRUE,
* 'dots' => TRUE,
* 'arrows' => FALSE,
* ];
*
* // Build the slick.
* $element = $slick->build($build);
*
* // Prepare $variables to pass into a .twig.html file.
* $variables['slick'] = $element;
*
* // Render the slick at a .twig.html file.
* // {{ slick }}
* // Or simply return the $element if a renderable array is expected.
* return $element;
* }
* @endcode
* @see \Drupal\slick\SlickManager::build()
* @see template_preprocess_slick_wrapper()
* @see template_preprocess_slick()
*
* @section sec_detail Detailed sample #2
*
* This can go to some hook_preprocess() of a target html.twig, or any relevant
* PHP file.
*
* The goal is to create a vertical newsticker, or tweets, with pure text only.
* First, create an unformatted Views block, says 'Ticker' containing ~ 10
* titles, or any data for the contents -- using EFQ, or static array will do.
*
* Returns the renderable array of a slick instance.
* @code
* function my_module_render_slick_detail() {
* // Invoke the plugin class, or use a DI service container accordingly.
* $slick = \Drupal::service('slick.manager');
*
* // Access the formatter service for image related methods:
* $formatter = \Drupal::service('slick.formatter');
*
* $build = [];
*
* // 1.
* // Optional $settings, can be removed.
* // Provides HTML settings with optionset name and ID, none of JS related.
* // To add JS key:value pairs, use #options below instead.
* // @see \Drupal\slick\SlickDefault for most supported settings.
* $build['settings'] = [
* // Optional optionset name, otherwise fallback to default.
* // 'optionset' => 'blog',
* // Optional skin name fetched from hook_slick_skins_info(), else none.
* // 'skin' => 'fullwidth',
* // Define the main ID. The rest are managed by the module.
* // If you provide ID, be sure unique per instance as it is cached.
* // Leave empty to be provided by the module.
* 'id' => 'slick-ticker',
*
* // Define cache max-age, default to -1 (Cache::PERMANENT) to permanently
* // cache the results. Hence a 1 hour is passed. Be sure it is an integer!
* 'cache' => 3600,
* ];
*
* // 3.
* // Obligatory #items, as otherwise empty slick.
* // Prepare #items, note the 'slide' key is to hold the actual slide
* // which can be pure and simple text, or any image/media file.
* // Meaning $rows can be text only, or image/audio/video, or a combination
* // of both.
* // To add caption/overlay, use 'caption' key with the supported sub-keys:
* // alt, data, link, overlay, title for complex content.
* // Sanitize each sub-key content accordingly.
* // @see template_preprocess_slick_slide() for more info.
* $items = [];
* foreach ($rows as $key => $row) {
* // Each item has keys: slide, caption, settings.
* $items[] = [
* 'slide' => $row,
*
* // Optional caption contains: alt, data, link, overlay, title.
* // If the above slide is an image, to add text caption, use:
* 'caption' => ['title' => 'some-caption data'],
*
* // Optional slide settings to manipulate layout, can be removed.
* // Individual slide supports some useful settings like layout, classes,
* // etc.
* // Meaning each slide can have different layout, or classes.
* // @see src/Plugin/Field/README.md
* 'settings' => [
*
* // Optionally add a custom layout, can be a static uniform value, or
* // dynamic one based on the relevant field value.
* // @see src/Plugin/Field/README.md for the supported layout keys.
* 'layout' => 'bottom',
*
* // Optionally add a custom class, can be a static uniform class, or
* // dynamic one based on the relevant field value.
* 'class' => 'slide--custom-class--' . $key,
* ],
* ];
* }
*
* // Pass the $items to the array.
* $build['items'] = $items;
*
* // 4.
* // Optional specific JS options, to re-use one optionset, can be removed.
* // Play with speed and options to achieve desired result.
* // @see config/install/slick.optionset.default.yml
* $build['options'] = [
* 'arrows' => FALSE,
* 'autoplay' => TRUE,
* 'vertical' => TRUE,
* 'draggable' => FALSE,
* ];
*
* // 5.
* // Build the slick with the arguments as described above.
* $element = $slick->build($build);
*
* // Prepare $variables to pass into a .twig.html file.
* $variables['slick'] = $element;
*
* // Render the slick at a .twig.html file.
* // {{ slick }}
* // Or simply return the $element if a renderable array is expected.
* return $element;
* }
* @endcode
* @see \Drupal\slick\SlickManager::build()
* @see template_preprocess_slick_wrapper()
*
* @section sec_asnavfor AsNavFor sample #3
*
* The only requirement for asNavFor is optionset and optionset_thumbnail IDs:
* @code
* $build['settings']['optionset'] = 'optionset_name';
* $build['settings']['optionset_thumbnail'] = 'optionset_thumbnail_name';
* @endcode
*
* The rest are optional, and will fallback to default:
* - $build['settings']['optionset_thumbnail'] = 'optionset_thumbnail_name';
* Defined at the main settings.
*
* - $build['settings']['id'] = 'slick-asnavfor';
* Only main display ID is needed. The thumbnail ID will be
* automatically created: 'slick-asnavfor-thumbnail', including the content
* attributes accordingly. If none provided, will fallback to incremented
* ID.
*
* See the HTML structure below to get a clear idea.
*
* 1. Main slider:
* @code
* <div id="slick-asnavfor" class="slick">
* <div class="slick__slider slick-initialized slick-slider">
* <div class="slick__slide"></div>
* </div>
* </div>
* @endcode
* 2. Thumbnail slider:
* @code
* <div id="slick-asnavfor-thumbnail" class="slick">
* <div class="slick__slider slick-initialized slick-slider">
* <div class="slick__slide"></div>
* </div>
* </div>
* @endcode
* The asnavfor targets are the 'slick-initialized' attributes, and managed by
* the module automatically when using SlickManager::build().
*
* Returns the renderable array of slick instances.
* @code
* function my_module_render_slick_asnavfor() {
* // Invoke the plugin class, or use a DI service container accordingly.
* $slick = \Drupal::service('slick.manager');
*
* // Access the formatter service for image related methods:
* $formatter = \Drupal::service('slick.formatter');
*
* $build = [];
*
* // 1. Main slider ---------------------------------------------------------
* // Add the main display items.
* $build['items'] = [];
*
* $images = [1, 2, 3, 4, 6, 7];
* foreach ($images as $key) {
* // Each item has keys: slide, caption, settings.
* $build['items'][] = [
*
* // Use $formatter->getImage($element) to have lazyLoad where $element
* // contains:
* // item: Drupal\image\Plugin\Field\FieldType\ImageItem.
* 'slide' => '<img src="/path/to/image-0' . $key . '.jpg">',
*
* // Main caption contains: alt, data, link, overlay, title keys which
* // serve the purpose to have consistent markups and skins without
* // bothering much nor remembering what HTML tags and where to place to
* // provide for each purpose cosnsitently. CSS will do layout regardless
* // HTML composition.
* // If having more complex caption data, use 'data' key instead.
* // If the common layout doesn't satisfy the need, just override twig.
* 'caption' => ['title' => 'Description #' . $key],
* ];
* }
*
* // Optionally override the optionset.
* $build['options'] = [
* 'arrows' => FALSE,
* 'centerMode' => TRUE,
* 'centerPadding' => '',
* ];
*
* // Satisfy the asnavfor main settings.
* // @see \Drupal\slick\SlickDefault for most supported settings.
* $build['settings'] = [
* // The only required is 'optionset_thumbnail'.
* // Define both main and thumbnail optionset names at the main display.
* 'optionset' => 'optionset_main_name',
* 'optionset_thumbnail' => 'optionset_thumbnail_name',
* 'nav' => TRUE,
*
* // The rest is optional, just FYI.
* 'id' => 'slick-asnavfor',
* 'skin' => 'skin-main-name',
* 'skin_thumbnail' => 'skin-thumbnail-name',
* ];
*
* // 2. Thumbnail slider ----------------------------------------------------
* // The thumbnail array is grouped by 'thumb', yet has the same structured
* // array as the main display: items, options, optionset, settings.
* $build['thumb'] = ['items' => []];
* foreach ($images as $key) {
* // Each item has keys: slide, caption, settings.
* $build['thumb']['items'][] = [
* // Use $formatter->getThumbnail($settings) where $settings contain:
* // uri, image_style, height, width, alt, title.
* 'slide' => '<img src="/path/to/image-0' . $key . '.jpg">',
*
* // Thumbnail caption accepts direct markup or custom renderable array
* // without any special key to be simple as much as complex.
* // Think Youtube playlist with scrolling nav: thumbnail, text, etc.
* 'caption' => ['#markup' => 'Description #' . $key],
* ];
* }
*
* // Optionally override 'optionset_thumbnail_name' with custom JS options.
* $build['thumb']['options'] = [
* 'arrows' => TRUE,
* 'centerMode' => TRUE,
* 'centerPadding' => '10px',
*
* // Be sure to have multiple slides for the thumbnail, otherwise nonsense.
* 'slidesToShow' => 5,
* ];
*
* // Build the slick once.
* $element = $slick->build($build);
*
* // Prepare variables to pass into a .twig.html file.
* $variables['slick'] = $element;
*
* // Render the slick at a .twig.html file.
* // {{ slick }}
* // Or simply return the $element if a renderable array is expected.
* return $element;
* }
* @endcode
* @see \Drupal\slick\SlickManager::build()
* @see template_preprocess_slick_wrapper()
*
* @section sec_skin Registering Slick skins
*
* To register a skin, implement hook_slick_skins_info() in a module file, and
* defines skins at the registered class which implements SlickSkinInterface.
*
* The class must implement \Drupal\slick\SlickSkinInterface, and it has 3
* supported methods: ::skins(), ::dots(), ::arrows() to have skin options for
* main/thumbnail/overlay/nested displays, dots, and arrows skins respectively.
* The declared skins will be available for custom coded, or UI selections.
*
* @see \Drupal\slick\SlickSkinInterface
* @see \Drupal\slick_example\SlickExampleSkin
* @see \Drupal\slick_extras\SlickExtrasSkin
*
* Add the needed methods accordingly.
* This can be used to register skins for the Slick. Skins will be
* available when configuring the Optionset, Field formatter, or Views style,
* or custom coded slicks.
*
* Slick skins get a unique CSS class to use for styling, e.g.:
* If your skin name is "my_module_slick_carousel_rounded", the CSS class is:
* slick--skin--my-module-slick-carousel-rounded
*
* A skin can specify CSS and JS files to include when Slick is displayed,
* except for a thumbnail skin which accepts CSS only.
*
* Each skin supports 5 keys:
* - name: The human readable name of the skin.
* - description: The description about the skin, for help and manage pages.
* - css: An array of CSS files to attach.
* - js: An array of JS files to attach, e.g.: image zoomer, reflection, etc.
* - group: A string grouping the current skin: main, thumbnail.
* - provider: A module name registering the skins.
*
* @section sec_skins Defines the Slick main and thumbnail skins
*
* @code
* public function skins() {
* $theme_path = base_path() . drupal_get_path('theme', 'my_theme');
*
* return [
* 'skin_name' => [
* // Human readable skin name.
* 'name' => 'Skin name',
*
* // Description of the skin.
* 'description' => t('Skin description.'),
*
* // Group skins to reduce confusion on form selection: main, thumbnail.
* 'group' => 'main',
*
* // Optional module name to prefix the library name.
* 'provider' => 'my_module',
*
* // Custom assets to be included within a skin, e.g.: Zoom, Reflection,
* // Slicebox, etc.
* 'css' => [
* 'theme' => [
* // Full path to a CSS file to include with the skin.
* $theme_path . '/css/my-theme--slider.css' => [],
* $theme_path . '/css/my-theme--carousel.css' => [],
* ],
* ],
* 'js' => [
* // Full path to a JS file to include with the skin.
* $theme_path . '/js/my-theme--slider.js' => [],
* $theme_path . '/js/my-theme--carousel.js' => [],
* // To act on afterSlick event, or any other slick events,
* // put a lighter weight before slick.load.min.js (0).
* $theme_path . '/js/slick.skin.menu.min.js' => ['weight' => -2],
* ],
*
* // Alternatively, add extra library dependencies for re-usable
* // libraries. These must be registered as module libraries first.
* // Use above CSS and JS directly if reluctant to register libraries.
* 'dependencies' => [
* 'my_module/d3',
* 'my_module/slicebox',
* 'my_module/zoom',
* ],
*
* // Add custom options to be merged into [data-slick] attribute.
* // Below is a sample of Slicebox options merged into Slick options.
* // These options later can be accessed in the custom JS acccordingly.
* 'options' => [
* 'orientation' => 'r',
* 'cuboidsCount' => 7,
* 'maxCuboidsCount' => 7,
* 'cuboidsRandom' => TRUE,
* 'disperseFactor' => 30,
* 'itemAnimation' => TRUE,
* 'perspective' => 1300,
* 'reflection' => TRUE,
* 'effect' => ['slicebox', 'zoom'],
* ],
* ],
* ];
* }
* @endcode
*
* @section sec_dots Defines Slick dot skins
*
* The provided dot skins will be available at sub-module UI form.
* A skin dot named 'hop' will have a class 'slick-dots--hop' for the UL.
*
* The array is similar to the self::skins(), excluding group, JS.
* @code
* public function dots() {
* // Create an array of dot skins.
* return [];
* }
* @endcode
*
* @section sec_arrows Defines Slick arrow skins
*
* The provided arrow skins will be available at sub-module UI form.
* A skin arrow 'slit' will have a class 'slick__arrow--slit' for the NAV.
*
* The array is similar to the self::skins(), excluding group, JS.
*
* @return array
* The array of the arrow skins.
* @code
* public function arrows() {
* // Create an array of arrow skins.
* return [];
* }
* @endcode
* @}
*/
/**
* @addtogroup hooks
* @{
*/
/**
* Registers a class that should hold skin definitions.
*
* @deprecated, will be removed anytime when a core solution is available.
* @see #2233261
* Postponed till D9.
*
* @see slick_hook_info()
* @see slick_example.module
* @see slick_extras.module
* @see \Drupal\slick\SlickSkinInterface
* @see sec_skin
*
* @ingroup slick_api
*/
function hook_slick_skins_info() {
return '\\Drupal\\my_module\\MyModuleSlickSkin';
}
/**
* Modifies overridable options at admin UI to re-use one optionset.
*
* Only accepts boolean values as these are displayed as checkboxes under
* `Override main optionset` form field at Slick formatter/ Slick Views forms.
*
* @see \Drupal\slick\Form\SlickAdmin::getOverridableOptions()
* @see config/install/slick.optionset.default.yml
*
* @ingroup slick_api
*/
function hook_slick_overridable_options_info_alter(&$options) {
// Adds RTL option to Slick field formatters, or Slick Views UI forms.
$options['rtl'] = t('RTL');
}
/**
* Modifies Slick optionset before being passed to preprocess, or templates.
*
* @param \Drupal\slick\Entity\Slick $slick
* The Slick object being modified.
* @param array $settings
* The contextual settings related to UI and HTML layout settings.
*
* @see \Drupal\slick\SlickManager::preRenderSlick()
*
* @ingroup slick_api
*/
function hook_slick_optionset_alter(Slick &$slick, array $settings) {
if ($slick
->id() == 'x_slick_nav') {
// Overrides the main settings of navigation with optionset ID x_slick_nav.
// To see available options, see config/install/slick.optionset.default.yml.
// Disable arrows.
$slick
->setSetting('arrows', FALSE);
// Checks if we have defined responsive settings.
if ($responsives = $slick
->getResponsiveOptions()) {
foreach ($responsives as $key => $responsive) {
if ($responsive['breakpoint'] == 481) {
// If Optimized option is enabled, only those different from default
// settings will be displayed at $responsive array. To poke around
// available settings, see config/install/slick.optionset.default.yml
// See what we have here.
// dpr($responsive);
// Overrides responsive settings.
$values = $responsive['settings'];
$values['centerPadding'] = '40px';
$values['slidesToShow'] = 1;
// Assign the new settings values.
$slick
->setResponsiveSettings($values, $key);
// Verify responsive settings updated.
// dpr($slick->getResponsiveOptions());
}
}
}
}
}
/**
* Modifies Slick HTML settings before being passed to preprocess, or templates.
*
* If you need to override globally to be inherited by all blazy-related
* modules: slick, gridstack, mason, etc., consider hook_blazy_settings_alter().
*
* @param array $build
* The array containing: item, content, settings, or optional captions.
* @param object $items
* The \Drupal\Core\Field\FieldItemListInterface items.
*
* @see \Drupal\blazy\BlazyFormatterManager::buildSettings()
* @see \Drupal\slick\SlickFormatter::buildSettings()
*
* @ingroup slick_api
*/
function hook_slick_settings_alter(array &$build, $items) {
$settings =& $build['settings'];
// Change skin if meeting a particular criteria.
// See blazy_blazy_settings_alter() at blazy.module for existing samples.
if ($settings['optionset'] == 'x_slick_for') {
$settings['skin'] = $settings['entity_id'] == 54 ? 'fullwidth' : $settings['skin'];
}
}
/**
* @} End of "addtogroup hooks".
*/Functions
Name |
Description |
|---|---|
| hook_slick_optionset_alter | Modifies Slick optionset before being passed to preprocess, or templates. |
| hook_slick_overridable_options_info_alter | Modifies overridable options at admin UI to re-use one optionset. |
| hook_slick_settings_alter | Modifies Slick HTML settings before being passed to preprocess, or templates. |
| hook_slick_skins_info | Registers a class that should hold skin definitions. |