date_facets_format.module

<?php

/**
 * @file
 * Provides formatting options for date-based facets.
 */

/**
 * Implementation of hook_menu().
 */
function date_facets_format_menu() {
  $items = array();
  $items['admin/settings/faceted_search/date_format'] = array(
    'title' => 'Date formats',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('date_facets_format_admin_settings_form'),
    'access arguments' => array('administer faceted search'),
    'type' => MENU_LOCAL_TASK,
  );

  return $items;
}

/**
 * Menu callback for the administration settings.
 */
function date_facets_format_admin_settings_form() {
  // Possible date formats (based on choices from system_date_time_settings()).
  $y = array(
    'Y',
    'y',
  );
  $ym = array(
    // Short
    'Y-m',
    'Y/m',
    'Y M',
    'm/Y',
    'm.Y',
    'M Y',
    // Medium
    'Y, F',
    'F, Y',
    'F Y',
  );
  $ymd = array(
    // Short
    'Y-m-d',
    'Y/m/d',
    'Y M j',
    'm/d/Y',
    'M j Y',
    'd/m/Y',
    'd.m.Y',
    'j M Y',
    // Medium
    'D, Y-m-d',
    'D, Y/m/d',
    'D, m/d/Y',
    'D, d/m/Y',
    'Y, F j',
    'F j, Y',
    'j F Y',
    'j F, Y',
    'j. F Y',
    // Long
    'l, Y,  F j',
    'l, F j, Y',
    'l, j F Y',
    'l, j F, Y',
    'l, j. F Y',
  );
  foreach ($y as $format) {
    $y_choices[$format] = format_date(time(), 'custom', $format);
  }
  foreach ($ym as $format) {
    $ym_choices[$format] = format_date(time(), 'custom', $format);
  }
  foreach ($ymd as $format) {
    $ymd_choices[$format] = format_date(time(), 'custom', $format);
  }
  $form['format'] = array(
    '#type' => 'fieldset',
    '#title' => t('Date formats'),
    '#description' => t('Choose the display formats to use when navigating date-based facets.'),
  );
  $form['format']['date_facets_format_y'] = array(
    '#type' => 'select',
    '#title' => t('Year format'),
    '#description' => t('The format for year display.'),
    '#options' => $y_choices,
    '#default_value' => variable_get('date_facets_format_y', $y[0]),
  );
  $form['format']['date_facets_format_ym'] = array(
    '#type' => 'select',
    '#title' => t('Year & month format'),
    '#description' => t('The format for year & month display.'),
    '#options' => $ym_choices,
    '#default_value' => variable_get('date_facets_format_ym', $ym[1]),
  );
  $form['format']['date_facets_format_ymd'] = array(
    '#type' => 'select',
    '#title' => t('Full date format'),
    '#description' => t('The format for full date display.'),
    '#options' => $ymd_choices,
    '#default_value' => variable_get('date_facets_format_ymd', $ymd[1]),
  );
  return system_settings_form($form);
}