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class FilterHashtags in Hashtags 8

Plugin annotation


@Filter(
  id = "filter_hashtags",
  title = @Translation("Hashtags Filter"),
  description = @Translation("Turn hashtags into links to corresponding terms"),
  type = Drupal\filter\Plugin\FilterInterface::TYPE_MARKUP_LANGUAGE,
)

Hierarchy

Expanded class hierarchy of FilterHashtags

File

src/Plugin/Filter/FilterHashtags.php, line 17

Namespace

Drupal\hashtags\Plugin\Filter
View source 
class FilterHashtags extends FilterBase {

  /**
   * Performs the filter processing.
   * @param string $text
   *   The text string to be filtered.
   * @param string $langcode
   *   The language code of the text to be filtered.
   * @return \Drupal\filter\FilterProcessResult
   *   The filtered text, wrapped in a FilterProcessResult object, and possibly
   *   with associated assets, cacheability metadata and placeholders.
   * @see \Drupal\filter\FilterProcessResult
   */
  public function process($text, $langcode) {
    $tids = _hashtags_get_tids_by_text($text);
    if (empty($tids)) {
      return new FilterProcessResult($text);
    }

    // create a class to pass parameters and have replace logic
    $replace_parameter = new LinksConverter($tids);

    // 1) 2+ character after #
    // 2) Don't start with or use only numbers (0-9) (#123abc, #123 etc)
    // 3) Letters - digits work correct (#abc123, #conference2013)
    // 4) No Special Characters “!, $, %, ^, &, *, +, .”
    // 5) No Spaces
    // 6) May use an underscore. Hyphens and dashes will not work.
    // 7) <p>#hashtag</p> - is valid
    // 8) <a href="#hashtag">Link</p> - is not valid
    // Bug when hashtag resides at the begining of the string
    $pattern = "/([\\s>]*?)(#)([[:alpha:]][[:alnum:]_]*[^<\\s[:punct:]])/iu";
    $text = preg_replace_callback($pattern, array(
      &$replace_parameter,
      'replace',
    ), $text);
    return new FilterProcessResult($text);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
DependencySerializationTrait::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
FilterBase::$provider public property The name of the provider that owns this filter.
FilterBase::$settings public property An associative array containing the configured settings of this filter.
FilterBase::$status public property A Boolean indicating whether this filter is enabled.
FilterBase::$weight public property The weight of this filter compared to others in a filter collection.
FilterBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies 1
FilterBase::defaultConfiguration public function Gets default configuration for this plugin. Overrides ConfigurableInterface::defaultConfiguration
FilterBase::getConfiguration public function Gets this plugin's configuration. Overrides ConfigurableInterface::getConfiguration
FilterBase::getDescription public function Returns the administrative description for this filter plugin. Overrides FilterInterface::getDescription
FilterBase::getHTMLRestrictions public function Returns HTML allowed by this filter's configuration. Overrides FilterInterface::getHTMLRestrictions 4
FilterBase::getLabel public function Returns the administrative label for this filter plugin. Overrides FilterInterface::getLabel
FilterBase::getType public function Returns the processing type of this filter plugin. Overrides FilterInterface::getType
FilterBase::prepare public function Prepares the text for processing. Overrides FilterInterface::prepare
FilterBase::setConfiguration public function Sets the configuration for this plugin instance. Overrides ConfigurableInterface::setConfiguration 1
FilterBase::settingsForm public function Generates a filter's settings form. Overrides FilterInterface::settingsForm 3
FilterBase::tips public function Generates a filter's tip. Overrides FilterInterface::tips 9
FilterBase::__construct public function Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides PluginBase::__construct 4
FilterHashtags::process public function Performs the filter processing. Overrides FilterInterface::process
FilterInterface::TYPE_HTML_RESTRICTOR constant HTML tag and attribute restricting filters to prevent XSS attacks.
FilterInterface::TYPE_MARKUP_LANGUAGE constant Non-HTML markup language filters that generate HTML.
FilterInterface::TYPE_TRANSFORM_IRREVERSIBLE constant Irreversible transformation filters.
FilterInterface::TYPE_TRANSFORM_REVERSIBLE constant Reversible transformation filters.
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.