Club Drupal

<?php

/**

 * @file

 * Definition of views_handler_filter_term_node_tid.

 */

/**

 * Filter by term id.

 *

 * @ingroup views_filter_handlers

 */

class views_handler_filter_term_node_tid extends views_handler_filter_many_to_one {

  // Stores the exposed input for this filter.

  var $validated_exposed_input = NULL;

  function init(&$view, &$options) {

    parent::init($view, $options);

    if (!empty($this->definition['vocabulary'])) {

      $this->options['vocabulary'] = $this->definition['vocabulary'];

    }

    // Convert legacy vid option to machine name vocabulary.

    if (isset($this->options['vid']) && !empty($this->options['vid']) & empty($this->options['vocabulary'])) {

      $vocabularies = taxonomy_get_vocabularies();

      $vid = $this->options['vid'];

      if (isset($vocabularies[$vid], $vocabularies[$vid]->machine_name)) {

        $this->options['vocabulary'] = $vocabularies[$vid]->machine_name;

      }

    }

  }

  function has_extra_options() { return TRUE; }

  function get_value_options() { /* don't overwrite the value options */ }

  function option_definition() {

    $options = parent::option_definition();

    $options['type'] = array('default' => 'textfield');

    $options['limit'] = array('default' => TRUE, 'bool' => TRUE);

    $options['vocabulary'] = array('default' => 0);

    $options['hierarchy'] = array('default' => 0);

    $options['error_message'] = array('default' => TRUE, 'bool' => TRUE);

    return $options;

  }

  function extra_options_form(&$form, &$form_state) {

    $vocabularies = taxonomy_get_vocabularies();

    $options = array();

    foreach ($vocabularies as $voc) {

      $options[$voc->machine_name] = check_plain($voc->name);

    }

    if ($this->options['limit']) {

      // We only do this when the form is displayed.

      if (empty($this->options['vocabulary'])) {

        $first_vocabulary = reset($vocabularies);

        $this->options['vocabulary'] = $first_vocabulary->machine_name;

      }

      if (empty($this->definition['vocabulary'])) {

        $form['vocabulary'] = array(

          '#type' => 'radios',

          '#title' => t('Vocabulary'),

          '#options' => $options,

          '#description' => t('Select which vocabulary to show terms for in the regular options.'),

          '#default_value' => $this->options['vocabulary'],

        );

      }

    }

    $form['type'] = array(

      '#type' => 'radios',

      '#title' => t('Selection type'),

      '#options' => array('select' => t('Dropdown'), 'textfield' => t('Autocomplete')),

      '#default_value' => $this->options['type'],

    );

    $form['hierarchy'] = array(

      '#type' => 'checkbox',

      '#title' => t('Show hierarchy in dropdown'),

      '#default_value' => !empty($this->options['hierarchy']),

      '#dependency' => array('radio:options[type]' => array('select')),

    );

  }

  function value_form(&$form, &$form_state) {

    $vocabulary = taxonomy_vocabulary_machine_name_load($this->options['vocabulary']);

    if (empty($vocabulary) && $this->options['limit']) {

      $form['markup'] = array(

        '#markup' => '<div class="form-item">' . t('An invalid vocabulary is selected. Please change it in the options.') . '</div>',

      );

      return;

    }

    if ($this->options['type'] == 'textfield') {

      $default = '';

      if ($this->value) {

        $result = taxonomy_term_load_multiple($this->value);

        foreach ($result as $entity_term) {

          if ($default) {

            $default .= ', ';

          }

          $default .= entity_label('taxonomy_term', $entity_term);

        }

      }

      $form['value'] = array(

        '#title' => $this->options['limit'] ? t('Select terms from vocabulary @voc', array('@voc' => $vocabulary->name)) : t('Select terms'),

        '#type' => 'textfield',

        '#default_value' => $default,

      );

      if ($this->options['limit']) {

        $form['value']['#autocomplete_path'] = 'admin/views/ajax/autocomplete/taxonomy/' . $vocabulary->vid;

      }

    }

    else {

      if (!empty($this->options['hierarchy']) && $this->options['limit']) {

        $tree = taxonomy_get_tree($vocabulary->vid, 0, NULL, TRUE);

        $options = array();

        if ($tree) {

          // Translation system needs full entity objects, so we have access to label.

          foreach ($tree as $term) {

            $choice = new stdClass();

            $choice->option = array($term->tid => str_repeat('-', $term->depth) . entity_label('taxonomy_term', $term));

            $options[] = $choice;

          }

        }

      }

      else {

        $options = array();

        $query = db_select('taxonomy_term_data', 'td');

        $query->innerJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

        $query->fields('td');

        $query->orderby('tv.weight');

        $query->orderby('tv.name');

        $query->orderby('td.weight');

        $query->orderby('td.name');

        $query->addTag('taxonomy_term_access');

        if ($this->options['limit']) {

          $query->condition('tv.machine_name', $vocabulary->machine_name);

        }

        $result = $query->execute();

        $tids = array();

        foreach ($result as $term) {

          $tids[] = $term->tid;

        }

        $entities = taxonomy_term_load_multiple($tids);

        foreach ($entities as $entity_term) {

          $options[$entity_term->tid] = entity_label('taxonomy_term', $entity_term);

        }

      }

      $default_value = (array) $this->value;

      if (!empty($form_state['exposed'])) {

        $identifier = $this->options['expose']['identifier'];

        if (!empty($this->options['expose']['reduce'])) {

          $options = $this->reduce_value_options($options);

          if (!empty($this->options['expose']['multiple']) && empty($this->options['expose']['required'])) {

            $default_value = array();

          }

        }

        if (empty($this->options['expose']['multiple'])) {

          if (empty($this->options['expose']['required']) && (empty($default_value) || !empty($this->options['expose']['reduce']))) {

            $default_value = 'All';

          }

          elseif (empty($default_value)) {

            $keys = array_keys($options);

            $default_value = array_shift($keys);

          }

          // Due to #1464174 there is a chance that array('') was saved in the admin ui.

          // Let's choose a safe default value.

          elseif ($default_value == array('')) {

            $default_value = 'All';

          }

          else {

            $copy = $default_value;

            $default_value = array_shift($copy);

          }

        }

      }

      $form['value'] = array(

        '#type' => 'select',

        '#title' => $this->options['limit'] ? t('Select terms from vocabulary @voc', array('@voc' => $vocabulary->name)) : t('Select terms'),

        '#multiple' => TRUE,

        '#options' => $options,

        '#size' => min(9, count($options)),

        '#default_value' => $default_value,

      );

      if (!empty($form_state['exposed']) && isset($identifier) && !isset($form_state['input'][$identifier])) {

        $form_state['input'][$identifier] = $default_value;

      }

    }

    if (empty($form_state['exposed'])) {

      // Retain the helper option

      $this->helper->options_form($form, $form_state);

      // Show help text if not exposed to end users.

      $form['value']['#description'] = t('Leave blank for all. Otherwise, the first selected term will be the default instead of "Any".');

    }

  }

  function value_validate($form, &$form_state) {

    // We only validate if they've chosen the text field style.

    if ($this->options['type'] != 'textfield') {

      return;

    }

    $values = drupal_explode_tags($form_state['values']['options']['value']);

    $tids = $this->validate_term_strings($form['value'], $values);

    if ($tids) {

      $form_state['values']['options']['value'] = $tids;

    }

  }

  function accept_exposed_input($input) {

    if (empty($this->options['exposed'])) {

      return TRUE;

    }

    // We need to know the operator, which is normally set in

    // views_handler_filter::accept_exposed_input(), before we actually call

    // the parent version of ourselves.

    if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator_id']) && isset($input[$this->options['expose']['operator_id']])) {

      $this->operator = $input[$this->options['expose']['operator_id']];

    }

    // If view is an attachment and is inheriting exposed filters, then assume

    // exposed input has already been validated

    if (!empty($this->view->is_attachment) && $this->view->display_handler->uses_exposed()) {

      $this->validated_exposed_input = (array) $this->view->exposed_raw_input[$this->options['expose']['identifier']];

    }

    // If we're checking for EMPTY or NOT, we don't need any input, and we can

    // say that our input conditions are met by just having the right operator.

    if ($this->operator == 'empty' || $this->operator == 'not empty') {

      return TRUE;

    }

    // If it's non-required and there's no value don't bother filtering.

    if (!$this->options['expose']['required'] && empty($this->validated_exposed_input)) {

      return FALSE;

    }

    $rc = parent::accept_exposed_input($input);

    if ($rc) {

      // If we have previously validated input, override.

      if (!$this->is_a_group() && isset($this->validated_exposed_input)) {

        $this->value = $this->validated_exposed_input;

      }

    }

    return $rc;

  }

  function exposed_validate(&$form, &$form_state) {

    if (empty($this->options['exposed'])) {

      return;

    }

    $identifier = $this->options['expose']['identifier'];

    // We only validate if they've chosen the text field style.

    if ($this->options['type'] != 'textfield') {

      if (isset($form_state['values'][$identifier]) && $form_state['values'][$identifier] != 'All') {

        $this->validated_exposed_input = (array) $form_state['values'][$identifier];

      }

      return;

    }

    if (empty($this->options['expose']['identifier'])) {

      return;

    }

    $values = drupal_explode_tags($form_state['values'][$identifier]);

    $tids = $this->validate_term_strings($form[$identifier], $values);

    if ($tids) {

      $this->validated_exposed_input = $tids;

    }

  }

  /**

   * Validate the user string. Since this can come from either the form

   * or the exposed filter, this is abstracted out a bit so it can

   * handle the multiple input sources.

   *

   * @param $form

   *   The form which is used, either the views ui or the exposed filters.

   * @param $values

   *   The taxonomy names which will be converted to tids.

   *

   * @return array

   *   The taxonomy ids fo all validated terms.

   */

  function validate_term_strings(&$form, $values) {

    if (empty($values)) {

      return array();

    }

    $tids = array();

    $names = array();

    $missing = array();

    foreach ($values as $value) {

      $missing[strtolower($value)] = TRUE;

      $names[] = $value;

    }

    if (!$names) {

      return FALSE;

    }

    $query = db_select('taxonomy_term_data', 'td');

    $query->innerJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

    $query->fields('td');

    $query->condition('td.name', $names);

    $query->condition('tv.machine_name', $this->options['vocabulary']);

    $query->addTag('taxonomy_term_access');

    $result = $query->execute();

    foreach ($result as $term) {

      unset($missing[strtolower($term->name)]);

      $tids[] = $term->tid;

    }

    if ($missing && !empty($this->options['error_message'])) {

      form_error($form, format_plural(count($missing), 'Unable to find term: @terms', 'Unable to find terms: @terms', array('@terms' => implode(', ', array_keys($missing)))));

    }

    elseif ($missing && empty($this->options['error_message'])) {

      $tids = array(0);

    }

    return $tids;

  }

  function value_submit($form, &$form_state) {

    // prevent array_filter from messing up our arrays in parent submit.

  }

  function expose_form(&$form, &$form_state) {

    parent::expose_form($form, $form_state);

    if ($this->options['type'] != 'select') {

      unset($form['expose']['reduce']);

    }

    $form['error_message'] = array(

      '#type' => 'checkbox',

      '#title' => t('Display error message'),

      '#default_value' => !empty($this->options['error_message']),

    );

  }

  function admin_summary() {

    // set up $this->value_options for the parent summary

    $this->value_options = array();

    if ($this->value) {

      $this->value = array_filter($this->value);

      $result = taxonomy_term_load_multiple($this->value);

      foreach ($result as $entity_term) {

        $this->value_options[$entity_term->tid] = entity_label('taxonomy_term', $entity_term);

      }

    }

    return parent::admin_summary();

  }

}