<?php
// $Id: cck_time.module,v 1.2 2009/08/18 09:58:48 ianchan Exp $

/*
 * @file
 *  Creates a time widget for CCK text fields
 */

 
/**
 * Implementation of hook_install().
 * 
 * Lets CCK take care of this.
 */
function cck_time_install() {
  content_notify('install', 'cck_time');
}


/**
 * Implementation of hook_uninstall().
 * 
 * Lets CCK take care of this.
 */
function cck_time_uninstall() {
  content_notify('uninstall', 'cck_time');
}


/**
 * Implementation of hook_enable().
 * 
 * Lets CCK take care of this.
 */
function cck_time_enable() {
  content_notify('enable', 'cck_time');
}


/**
 * Implementation of hook_disable().
 * 
 * Lets CCK take care of this.
 */
function cck_time_disable() {
  content_notify('disable', 'img_cap_tax');
}


function cck_time_field_info() {
  return array(
    'cck_time' => array(
      'label' => t('Time'),
      'description' => t('Store a time of day.'),
    ),
  );
}


/**
 * Implementation of hook_field().
 */
function cck_time_field($op, &$node, $field, &$items, $teaser, $page) {
  switch ($op) {
    case 'presave': {
      if (empty($items)) {
        return;
      };
      //intentional lack of support for multiple values
      $items[0]['value'] = $items[0]['hour'] .':'. $items[0]['minute'];
      if (isset($items[0]['meridien'])) {
        $items[0]['value'] .= $items[0]['meridien'];
      };
			break;
    }
  }
}


function cck_time_widget_info() {
  return array(
    'cck_time' => array(
      'label' => t('Time'),
      'field types' => array('text'),
      'multiple values' => CONTENT_HANDLE_MODULE,
      'callbacks' => array(
        'default value' => CONTENT_CALLBACK_DEFAULT,
      ),
    ),
  );
}


/**
 * Implementation of hook_elements().
 */
function cck_time_elements() {
  $elements = array();
  $elements['cck_time'] =  array(
    '#input' => TRUE,
    '#process' => array('cck_time_process'),
  );
  return $elements;
}


function cck_time_field_formatter_info() {
  return array(
    'default' => array(
      'label' => t('Time'),
      'field types' => array('cck_time'),
    ),
  );
}


/**
 * Theme function for 'default' text field formatter.
 */
function theme_cck_time_formatter_default($element) {
  if( empty( $element['#item'] )) {
    return 'ZZZ';
  }
  $el = $element['#item'];
  $output = $el['hour'] . ':::' . $el['minute'] . $el['meridien'];
  print_r($element['#item']);
	return $output; 
}


/**
 * Implementation of hook_widget().
 */
function cck_time_widget(&$form, &$form_state, $field, $items, $delta = 0) {
print_r($element);
  $element = array(
    '#type' => $field['widget']['type'],
    '#default_value' => ''
  );

  //deal with default values when editing a form
  if (isset($items[$delta]['value'])) {
    //value comes from a previously stored node with this cck field; 
    //divide the single string value from the database into its drop-down boxes on the form
    list($hour, $minute) = split(':', $items[$delta]['value']);
    if ($field['widget']['format'] == 12) {
      $items[$delta]['minute'] = substr($minute, 0, 2);
      $items[$delta]['meridien'] = substr($minute, 2, 2);
    } 
    else {
      $items[$delta]['minute'] = $minute;
    }
    $items[$delta]['hour'] = $hour;
    $element['#default_value'] = $items[$delta];
  }
  elseif (isset($items[$delta])) {
    //the CCK field was added later to the node; the field is empty -> get the default values
    $element['#default_value'] = $field['widget']['default_value'][0];
  }
  
  return $element;
}


/**
 * Implementation of hook_theme().
 */
function cck_time_theme() {
  return array(
    'cck_time_formatter_default' => array(
      'arguments' => array('element' => NULL),
    ),
  );
}


function theme_cck_time_widget(&$element) {
  return theme( 'form_element', $element, $element['#children'] );
}


function cck_time_process($element, $edit, $form_state, $form) {
  $field_name = $element['#field_name'];
  $field = $form['#field_info'][$element['#field_name']];
  $delta = $element['#delta'];
  $clock = isset($field['widget']['format']) ? (int) $field['widget']['format'] : 24;
  $increment = isset($field['widget']['increment']) ? (int) $field['widget']['increment'] : 1;
	if($increment < 1) { $increment = 1; }
	switch ( $clock ) {
		case 12 :
			$h_min = 1;
			$h_max = 12;
			break;

		case 24 :
		default;
			$h_min = 0;
			$h_max = 23;
			break;
	}
	// hours
  $hours[-1] = '--';
	for ($i = $h_min; $i <= $h_max; $i++) {
		if ($clock == 24) {
			$val = ($i < 10) ? "0$i" : $i;
			$hours[$val] = $val;
		}
		else {
			$hours[$i] = $i;
		}
	}

	// minutes
  $minutes[-1] = '--';
	for ($i = 0; $i <= 59; $i+=$increment) {
		$val = ($i < 10) ? "0$i" : $i;
		$minutes[$val] = $val;
	}

	$form = array();
	$element['#type'] = 'fieldset';
	$element['#attributes'] = array('class' => 'cck-time');
	$element['#title'] = t($field['widget']['label']);
	$element['hour'] = array(
	  '#type' => 'select',
    '#title' => '',
    '#options' => $hours,
    '#required' => $element['#required'],
    '#field_name' => $element['#field_name'],
    '#type_name' => $element['#type_name'],
    '#delta' => $element['#delta'],
    '#default_value' => isset($element['#value']) ? $element['#value'] : NULL,
    '#prefix' => '<div class="cck-time-element">',
    '#suffix' => '</div>',
	);
	$element['minute'] = array(
    '#type' => 'select',
    '#title' => '',
    '#options' => $minutes,
    '#required' => $element['#required'],
    '#field_name' => $element['#field_name'],
    '#type_name' => $element['#type_name'],
    '#delta' => $element['#delta'],
    '#default_value' => isset($element['#value']) ? $element['#value'] : NULL,
    '#prefix' => '<div class="cck-time-element">',
    '#suffix' => '</div>',
	);
  if ($clock == 12) {
    $element['meridien'] = array(
      '#type' => 'select',
      '#title' => '',
      '#options' => array('AM' => 'AM', 'PM' => 'PM'),
    '#required' => $element['#required'],
    '#field_name' => $element['#field_name'],
    '#type_name' => $element['#type_name'],
    '#delta' => $element['#delta'],
      '#default_value' => isset($element['#value']) ? $element['#value'] : NULL,
      '#prefix' => '<div class="cck-time-element">',
      '#suffix' => '</div>',    
    );
  };
	return $element;
}


function cck_time_widget_settings($op, $widget) {
  switch ($op) {
    case 'callbacks':
      return array('default value' => CONTENT_CALLBACK_CUSTOM);

    case 'form':
        $form = array();
        $form['cck_time']['format'] = array(
          '#type' => 'select',
          '#title' => t('Time format'),
          '#default_value' => isset($widget['format']) ? $widget['format'] : 1,
          '#options' => array(24=>'24-hour (23:59)', 12=>'12-hour (12:59AM)'),
          '#description' => t('Record times in 24-hour format or in 12-hour format (with AM/PM).'),
          );
        $form['cck_time']['increment'] = array(
          '#type' => 'select',
          '#title' => t('Minute increment'),
          '#default_value' => isset($widget['increment']) ? $widget['increment'] : 1,
          '#options' => array(1 => 1, 5 => 5, 10 => 10, 15 => 15, 30 => 30),
          '#description' => t('Increment the minute values by this amount.'),
        );
        return $form;

    case 'validate':
      $format_OK    = array('12', '24');
      $increment_OK = array('1', '5', '10', '15', '30');
      if (!in_array( $widget['format'], $format_OK) || !in_array( $widget['increment'], $increment_OK)) {
        form_set_error('','There was a a problem with the time settings. Please check your values.');
      }
      break;

    case 'save':
      return array('increment', 'format');
  }
}


/**
 * Implementation of hook_content_is_empty().
 */
function cck_time_content_is_empty($item, $field) {
  if (empty($item['value'])) {
    return TRUE;
  }
  return FALSE;
}

/**
 * FAPI theme for an individual text elements.
 */
function theme_cck_time($element) {
  return $element['#children'];
}

function cck_time_field_settings($op, $field) {
  switch ($op) {
    case 'callbacks': {
      return array('default value' => CONTENT_CALLBACK_CUSTOM);
      break;
		}
    case 'form': {
      $form = array();
			$form['cck_time']['format'] = array(
				'#type' => 'select',
				'#title' => t('Time format'),
				'#default_value' => isset($field['format']) ? $field['format'] : 1,
				'#options' => array(24=>'24-hour (23:59)', 12=>'12-hour (12:59AM)'),
				'#description' => t('Record times in 24-hour format or in 12-hour format (with AM/PM).'),
				);
			$form['cck_time']['increment'] = array(
				'#type' => 'select',
				'#title' => t('Minute increment'),
				'#default_value' => isset($field['increment']) ? $field['increment'] : 1,
				'#options' => array(1 => 1, 5 => 5, 10 => 10, 15 => 15, 30 => 30),
				'#description' => t('Increment the minute values by this amount.'),
			);
      return $form;
      break;
		}
    case 'validate': {
      $format_OK    = array('12', '24');
      $increment_OK = array('1', '5', '10', '15', '30');
      if (!in_array( $field['format'], $format_OK) || !in_array( $field['increment'], $increment_OK)) {
        form_set_error('','There was a a problem with the time settings. Please check your values.');
      }
      break;
		}
    case 'save': {
      return array('increment', 'format');
      break;
    }

    case 'database columns': {
      $columns['value'] = array('type' => 'varchar', 'length' => 10, 'not null' => FALSE, 'sortable' => TRUE);
      return $columns;
     
      break;
    }
  }
}