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class calendar_plugin_style_ical in Calendar 7.2

Same name and namespace in other branches
  1. 6.2 calendar_ical/calendar_plugin_style_ical.inc \calendar_plugin_style_ical
  2. 7 calendar_ical/calendar_plugin_style_ical.inc \calendar_plugin_style_ical

Default style plugin to render an iCal feed.

Hierarchy

Expanded class hierarchy of calendar_plugin_style_ical

1 string reference to 'calendar_plugin_style_ical'
calendar_ical_views_plugins in calendar_ical/calendar_ical.views.inc
Implementation of hook_views_plugins

File

calendar_ical/calendar_plugin_style_ical.inc, line 11
Views style plugin for the Calendar iCal module.

View source 
class calendar_plugin_style_ical extends views_plugin_style_rss {
  function init(&$view, &$display, $options = NULL) {
    parent::init($view, $display, $options);
    $fields = $display->handler->default_display->options['fields'];
    $this->options['fields'] = $fields;
  }
  function query() {

    // We need these values for the iCal feed.
    $this->view->query
      ->add_field('node', 'title');
    $this->view->query
      ->add_field('node', 'type');
    parent::query();
  }
  function attach_to($display_id, $path, $title) {
    $display = $this->view->display[$display_id]->handler;
    $url_options = array();
    $input = $this->view
      ->get_exposed_input();
    if ($input) {
      $url_options['query'] = $input;
    }

    // TODO adjust this to pick up default values when no arg is set?
    $url = url($this->view
      ->get_url(NULL, $path), $url_options);
    if (empty($this->view->feed_icon)) {
      $this->view->feed_icon = '';
    }
    $this->view->feed_icon .= theme('calendar_ical_icon', array(
      'url' => $url,
    ));
    drupal_add_html_head_link(array(
      'rel' => 'alternate',
      'type' => 'application/calendar',
      'title' => $title,
      'href' => $url,
    ));
  }

  /**
   * Set default options
   */
  function options(&$options) {
    parent::options($options);
    $options['summary_field'] = 'title';
    $options['description_field'] = '';
    $options['location_field'] = '';
    $options['fields'] = array();
  }
  function option_definition() {
    $options = parent::option_definition();
    $options['summary_field'] = array(
      'default' => '',
      'translatable' => TRUE,
    );
    $options['description_field'] = array(
      'default' => '',
      'translatable' => TRUE,
    );
    $options['location_field'] = array(
      'default' => '',
      'translatable' => TRUE,
    );
    return $options;
  }
  function options_form(&$form, &$form_state) {
    $options = array(
      '' => '',
    );
    foreach ($this->options['fields'] as $field) {
      $handler = views_get_handler($field['table'], $field['field'], 'field');
      $options[$field['field']] = $handler
        ->ui_name();
    }
    $form['#prefix'] = '<div class="form-item">' . t("Map the View fields to the values they should represent in the iCal feed. Only fields that have been added to the view are available to use in this way. You can add additional fields to the view and mark them 'Exclude from display' if you only want them in the iCal feed.") . '</div>';
    $form['summary_field'] = array(
      '#type' => 'select',
      '#title' => t('Title'),
      '#default_value' => !empty($this->options['summary_field']) ? $this->options['summary_field'] : 'title',
      '#options' => $options,
      '#required' => TRUE,
    );
    $form['description_field'] = array(
      '#type' => 'select',
      '#title' => t('Description'),
      '#default_value' => $this->options['description_field'],
      '#options' => $options,
    );
    $form['location_field'] = array(
      '#type' => 'select',
      '#title' => t('Location'),
      '#default_value' => $this->options['location_field'],
      '#options' => $options,
    );
  }

  /**
   * Style validation.
   */
  function validate() {
    $errors = parent::validate();
    $style = $this->display->display_options['style_plugin'];
    $arguments = $this->display->handler
      ->get_option('arguments');
    $filters = $this->display->handler
      ->get_option('filters');
    if (!array_key_exists('date_argument', $arguments) && !array_key_exists('date_filter', $filters)) {
      if (empty($this->view->date_info->arg_missing)) {
        $errors[$style] = t("The @style style requires a Date argument or a Date filter.", array(
          '@style' => $style,
        ));
      }
      $this->view->date_info->arg_missing = TRUE;
    }
    if (array_key_exists('date_argument', $arguments) && ($arguments['date_argument']['default_action'] != 'default' || $arguments['date_argument']['default_argument_type'] != 'date')) {
      if (empty($this->view->date_info->arg_missing_default)) {
        $errors[] = calendar_errors('missing_argument_default');
      }
      $this->view->date_info->arg_missing_default = TRUE;
    }
    if (empty($this->options['summary_field'])) {
      $errors[] = $errors[$style] = t("The @style style requires a Title field for the iCal export.", array(
        '@style' => $style,
      ));
    }

    // Make sure date fields are not set up to 'Group multiple values'
    // in the calendar style.
    if ($style == 'calendar_style') {
      $view_fields = date_views_fields($this->view->base_table);
      $view_fields = $view_fields['name'];
      $fields = $this->display->handler
        ->get_option('fields');
      foreach ($fields as $column => $field) {
        $field_name = $field['table'] . "." . $field['field'];
        if (!empty($field['multiple'])) {
          $cck_fields = field_info_fields();
          $real_name = $view_fields[$field_name]['real_field_name'];
          if ($cck_fields[$real_name]['multiple'] && !empty($field['multiple']['group'])) {
            $errors[] = t("The date field '@field' used by the display '@display_title' cannot be set to 'Group multiple values'.", array(
              '@field' => $view_fields[$field_name]['label'],
              '@display_title' => $this->display->display_title,
            ));
          }
        }
      }
    }
    return $errors;
  }
  function render() {
    module_load_include('inc', 'calendar', 'includes/calendar');

    // Transfer the style options to the view object so they
    // can be easily accessed in the theme.
    $style_options = $this->options;
    $this->view->date_info->summary_field = $style_options['summary_field'];
    $this->view->date_info->description_field = $style_options['description_field'];
    $this->view->date_info->location_field = $style_options['location_field'];

    // Evaluate our argument values and figure out which values to use.
    $date_filter = NULL;
    foreach ($this->view->filter as $id => $handler) {
      if (date_views_handler_is_date($handler, 'filter')) {
        $date_filter = $handler;
        $key = 'filter';
        $name = $id;
      }
    }
    $i = 0;
    foreach ($this->view->argument as $id => $handler) {
      if (date_views_handler_is_date($handler, 'argument')) {
        $date_filter = $handler;
        $key = 'argument';
        $name = $id;
        $pos = $i;
        $i++;
      }
    }
    if (!empty($date_filter)) {
      if ($key == 'argument') {
        $this->view->date_info->date_arg = !empty($this->view->args) ? $this->view->args[$date_filter->position] : '';
        $this->view->date_info->date_arg_pos = $pos;

        // TODO Decide if we want to provide a date here or not.
        // Adding this now is to prevent fatal errors later if the
        // view is used in unexpected ways without a date being set.
        if (empty($date_filter->min_date)) {
          $value = $date_filter
            ->get_default_argument();
          $range = $date_filter->date_handler
            ->arg_range($value);
          $date_filter->min_date = $range[0];
          $date_filter->max_date = $range[1];
        }
      }
      elseif ($key == 'filter') {

        // TODO Decide if we want to provide a date here or not.
        // Adding this now is to prevent fatal errors later if the
        // view is used in unexpected ways without a date being set.
        if (empty($date_filter->min_date)) {
          $value = $date_filter
            ->date_default_value('value');
          $range = $date_filter->date_handler
            ->arg_range($value);
          $date_filter->min_date = $range[0];
          $date_filter->max_date = $range[1];
        }
      }
      $this->view->date_info->granularity = !empty($date_filter->granularity) ? $date_filter->granularity : $date_filter->options['granularity'];
      $this->view->date_info->min_date = $date_filter->min_date;
      $this->view->date_info->max_date = $date_filter->max_date;
      if (empty($this->view->date_info->date_fields)) {
        $this->view->date_info->date_fields = array();
      }
      $this->view->date_info->date_fields = array_merge($this->view->date_info->date_fields, array_keys($date_filter->options['date_fields']));
    }

    // Render each field into an output array.
    $result = (array) $this->view->result;
    $this->view->style_plugin
      ->render_fields($result);
    $rendered_items = !empty($this->view->style_plugin->rendered_fields) ? $this->view->style_plugin->rendered_fields : array();
    $items = array();
    $calendar_fields = date_views_fields($this->view->base_table);
    $calendar_fields = array_keys($calendar_fields['alias']);

    // Try to figure out the 'id' for this collection of items.
    // The id field is often not a field but instead an 'additional field',
    // so this is cludgy.
    foreach ($result as $num => $row) {
      $keys = array_keys((array) $row);
      foreach ($keys as $key) {
        if (strlen($key) == 3 && substr($key, -2) == 'id' && !empty($row->{$key})) {
          $id = $key;
        }
      }
    }
    foreach ($result as $num => $row) {
      $copy = clone $row;
      $items[$num]->id = !empty($row->{$id}) ? $row->{$id} : NULL;
      $items[$num]->rendered = !empty($rendered_items[$num]) ? $rendered_items[$num] : '';
      $items[$num]->raw = $copy;
      $items[$num]->calendar_fields = new stdClass();
      foreach ($row as $key => $value) {
        if (in_array($key, $calendar_fields)) {
          $items[$num]->calendar_fields->{$key} = $value;
        }
      }
    }

    // Massage the resulting items into formatted calendar items.
    $items = calendar_build_nodes($this->view, $items);

    // Merge in items from other sources.
    foreach (module_implements('calendar_add_items') as $module) {
      $function = $module . '_calendar_add_items';
      if (function_exists($function)) {
        if ($feeds = $function($this->view)) {
          foreach ($feeds as $feed) {
            $items = $feed;
          }
        }
      }
    }
    return theme($this
      ->theme_functions(), array(
      'view' => $this->view,
      'options' => $this->options,
      'items' => $items,
    ));
  }

}

Members

Namesort descending Modifiers Type Description Overrides
calendar_plugin_style_ical::attach_to function Overrides views_plugin_style_rss::attach_to
calendar_plugin_style_ical::init function Initialize a style plugin. Overrides views_plugin_style::init
calendar_plugin_style_ical::options function Set default options Overrides views_object::options
calendar_plugin_style_ical::options_form function Provide a form to edit options for this plugin. Overrides views_plugin_style_rss::options_form
calendar_plugin_style_ical::option_definition function Information about options for all kinds of purposes will be held here. Overrides views_plugin_style_rss::option_definition
calendar_plugin_style_ical::query function Add anything to the query that we might need to. Overrides views_plugin_style::query
calendar_plugin_style_ical::render function Render the display in this style. Overrides views_plugin_style_rss::render
calendar_plugin_style_ical::validate function Style validation. Overrides views_plugin_style::validate
views_object::$definition public property Handler's definition.
views_object::$options public property Except for displays, options for the object will be held here. 1
views_object::altered_option_definition function Collect this handler's option definition and alter them, ready for use.
views_object::construct public function Views handlers use a special construct function. 4
views_object::export_option public function 1
views_object::export_options public function
views_object::export_option_always public function Always exports the option, regardless of the default value.
views_object::set_default_options public function Set default options.
views_object::set_definition public function Let the handler know what its full definition is.
views_object::unpack_options public function Unpack options over our existing defaults, drilling down into arrays so that defaults don't get totally blown away.
views_object::unpack_translatable public function Unpack a single option definition.
views_object::unpack_translatables public function Unpacks each handler to store translatable texts.
views_object::_set_option_defaults public function
views_plugin::$display public property The current used views display.
views_plugin::$plugin_name public property The plugin name of this plugin, for example table or full.
views_plugin::$plugin_type public property The plugin type of this plugin, for example style or query.
views_plugin::$view public property The top object of a view. Overrides views_object::$view 1
views_plugin::additional_theme_functions public function Provide a list of additional theme functions for the theme info page.
views_plugin::options_submit public function Handle any special handling on the validate form. 9
views_plugin::plugin_title public function Return the human readable name of the display.
views_plugin::summary_title public function Returns the summary of the settings in the display. 8
views_plugin::theme_functions public function Provide a full list of possible theme templates used by this style.
views_plugin_style::$row_plugin public property The row plugin, if it's initialized and the style itself supports it.
views_plugin_style::$row_tokens public property Store all available tokens row rows.
views_plugin_style::build_sort public function Called by the view builder to see if this style handler wants to interfere with the sorts. If so it should build; if it returns any non-TRUE value, normal sorting will NOT be added to the query. 1
views_plugin_style::build_sort_post public function Called by the view builder to let the style build a second set of sorts that will come after any other sorts in the view. 1
views_plugin_style::destroy public function Destructor. Overrides views_object::destroy
views_plugin_style::even_empty public function Should the output of the style plugin be rendered even if it's empty. 1
views_plugin_style::get_field public function Get a rendered field.
views_plugin_style::get_field_value public function Get the raw field value.
views_plugin_style::get_row_class public function Return the token replaced row class for the specified row.
views_plugin_style::options_validate public function Validate the options form. Overrides views_plugin::options_validate
views_plugin_style::pre_render public function Allow the style to do stuff before each row is rendered.
views_plugin_style::render_fields public function Render all of the fields for a given style and store them on the object.
views_plugin_style::render_grouping public function Group records as needed for rendering.
views_plugin_style::render_grouping_sets public function Render the grouping sets.
views_plugin_style::tokenize_value public function Take a value and apply token replacement logic to it.
views_plugin_style::uses_fields public function Return TRUE if this style also uses fields.
views_plugin_style::uses_row_class public function Return TRUE if this style also uses a row plugin.
views_plugin_style::uses_row_plugin public function Return TRUE if this style also uses a row plugin.
views_plugin_style::uses_tokens public function Return TRUE if this style uses tokens.
views_plugin_style_rss::get_channel_elements public function Return an array of additional XHTML elements to add to the channel.
views_plugin_style_rss::get_channel_elements_atom_link public function Return an atom:link XHTML element to add to the channel to comply with the RSS 2.0 specification.
views_plugin_style_rss::get_description public function Get RSS feed description.