<?php
// $Id$
 
/**
 * @file
 * myftr3.module
 */
 
/**
 * Implementation of hook_theme().
 */
function myftr3_theme() {
  return array(
    'myftr3_formatter_date_table' => array(
      'arguments' => array('element' => NULL),
    ),
  );
}
 
/**
 * Implementation of hook_field_formatter_info().
 */
function myftr3_field_formatter_info() {
  return array(
    'date_table' => array(
      'label'           => t('Table'),
      'field types'     => array('date', 'datestamp', 'datetime'),
      'multiple values' => CONTENT_HANDLE_MODULE
    ),
  );
}
 
function theme_myftr3_formatter_date_table($element) {
  $node = $element['#node'];
  $field_name = $element['#field_name'];
  $context = !empty($node->content) && !empty($node->content[$field_name]) ? $node->content[$field_name]['#context'] : 'full';
  $type_name = $element['#type_name'];
  $field = content_fields($field_name);
 
  // Get the formatter settings, either the default settings for this node
  // type or the View settings stored in $node->date_info.
  $options = date_formatter_get_settings($field_name, $type_name, $context);
  if (!empty($node->date_info) && !empty($node->date_info->formatter_settings)) {
    $options = $node->date_info->formatter_settings;
  }
 
  $delta_from = $delta_to = FALSE;
  // If this is a full node or a pseudo node created by grouping
  // multiple values, see exactly which values are supposed to be visible.
  if (isset($node->$field_name)) {
    $node = date_prepare_node($node, $field, $type_name, $context, $options);
    // Adjust the $element values to match the changes.
    $element['#node'] = $node;
  }
  else {
    $max_count = $options['multiple']['multiple_number'];
    // If no results should be shown, empty the values and return.
    if (is_numeric($max_count) && $max_count == 0) {
      $node->{$field_name} = array();
      return '';
    }
 
    if (!empty($options['multiple']['multiple_from'])) {
      $delta_from = $options['multiple']['multiple_from'] - 1;
      if (is_numeric($max_count)) {
        $delta_to = $delta_from + $max_count;
      }
    }
 
    if ($delta_to === FALSE AND !empty($options['multiple']['multiple_to'])) {
      $delta_to = $options['multiple']['multiple_to'] ;
    }
  }
 
  $rows = array();
  $diff_sum = 0;
  $gran = 4;
  foreach (element_children($element) as $delta) {
    // Did the current value get removed by formatter settings?
    if (isset($node->$field_name)) {
      if (empty($node->{$field_name}[$delta])) continue;
    }
    elseif ($delta_from !== FALSE AND $delta_from > $delta) {
      continue;
    }
    elseif ($delta_to !== FALSE AND $delta_to <= $delta) {
      break;
    }
 
    $element['#item'] = $element[$delta]['#item'];
    $dates = date_formatter_process($element);
    // Pull the timezone, if any, out of the formatted result and tack it
    // back on at the end, if it is in the current formatted date.
    $timezone = $dates['value']['formatted_timezone'];
    if ($timezone) {
      $timezone = ' ' . $timezone;
    }
 
    $date1 = str_replace($timezone, '', $dates['value']['formatted']);
    $date2 = str_replace($timezone, '', $dates['value2']['formatted']);
    $row = array();
    switch ($options['fromto']['fromto']) {
      case 'value':
        $row['from']['data'] = theme('date_display_single', $date1, $timezone);
        break;
 
      case 'value2':
        $row['to']['data'] = theme('date_display_single', $date2, $timezone);
        break;
 
      default:
        $diff = strtotime($dates['value2']['local']['datetime']) - strtotime($dates['value']['local']['datetime']);
        $diff_sum += $diff;
        $row['from']['data'] = theme('date_display_single', $date1, $timezone);
        $row['to']['data'] = theme('date_display_single', $date2, $timezone);
        $row['diff']['data'] = format_interval($diff, $gran);
        break;
    }
 
    $rows[] = array('data' => $row);
  }
 
  $header = array(
    0 => array('data' => t('From')),
    1 => array('data' => t('To')),
    2 => array('data' => t('Diff')),
  );
 
 
  if ($options['fromto']['fromto'] != 'both') {
    unset($header[2]);
    unset($header[(($options['fromto']['fromto'] == 'value') ? 1 : 0)]);
    return theme('table', $header, $rows);
  }
  else {
    $tfoot = sprintf(
      '</thead><tfoot><tr><td colspan="3" align="right"><strong>%s</strong> %s</td></tr></tfoot><tbody>',
      t('Summary'),
      format_interval($diff_sum, $gran)
    );
    return str_replace("</thead>\n<tbody>", $tfoot, theme('table', $header, $rows));
  }
}