<?php
// $Id: cmis_field.module,v 1.1.4.2 2011-02-20 14:31:43 cfuller12 Exp $

/**
 * Implementation of hook_field_info()
 * 
 * @return array - field definition
 */
function cmis_field_field_info() {
  return array(
    'cmis_field_path' => array(
      'label' => t('CMIS Field'),
      'description' => t('Attach a CMIS object to a Drupal entity'),
      'default_widget' => 'cmis_field_widget',
      'default_formatter' => 'cmis_field_link',
    )
  );
}

/**
 * Implements hook_field_validate().
 *
 * For now, just validates that the field isn't empty.
 */
function cmis_field_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
  foreach ($items as $delta => $item) {
    if (!empty($item['cmis_field_path'])) {
      if (1 == 0) {
        $errors[$field['cmis_field']][$langcode][$delta][] = array(
          'error' => 'cmis_field_invalid',
          'message' => t('You are in the anti-universe, where 1 == 0.'),
        );
      }
    }
  }
}

/**
 * Implementation of hook_is_empty()
 * 
 * @param $item - field value(s)
 * @param $field - field settings
 * @return boolean - TRUE/FALSE
 */
function cmis_field_field_is_empty($item, $field) {
  return empty($item['path']);
}

/**
 * Implementation of hook_field_settings_form()
 * 
 * @param $op - operation
 * @param $field - field beign operated on
 * @return - form or settings array dependent on operation
 */
function cmis_field_field_settings_form($field, $instance, $has_data) {
  $settings = $field['settings'];
  
  $form['cmis_field_rootFolderPath'] = array(
    '#title' => t('Root Directory'),
    '#description' => t('Root folder for CMIS nodes'),
    '#type' => 'textfield',
    '#autocomplete_path' => 'cmis/autocomplete',
    '#default_value' => '/',
  );
  
  return $form;
}

/**
 * Implementation of hook_field_widget_info
 * 
 * @return array defining the widget
 */
function cmis_field_field_widget_info() {
  return array(
    'cmis_field_browser' => array(
      'label' => t('CMIS link'),
      'field types' => array('cmis_field_path'),
    )
  );
}


/**
 * Implementation of hook_field_widget_form()
 * 
 * @param $element - the form element array
 * @param $edit - 
 * @param $form_state - form state array
 * @param $form - form array
 * @return array - form element
 */
function cmis_field_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
  $value = isset($items[$delta]['path']) ? $items[$delta]['path'] : '';
  $element += array(
    '#delta' => $delta,
  );
  $element['path'] = array();

  $element['path'] += array(
    '#type' => 'textfield',
    '#default_value' => $value,
    '#autocomplete_path' => 'cmis/autocomplete'
  );
  
  return $element;
}

/**
 * Implementation of hook_field_formatter_info()
 * 
 * @return array
 */
function cmis_field_field_formatter_info() {
  return array( 
    'cmis_field_link' => array( 
       'label' => t('CMIS browser'),
       'field types' => array('cmis_field_path')
    )
  );
}


/**
 * Implements hook_field_formatter_view().
 * 
 */

function cmis_field_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();
  switch ($display['type']) {
    case 'cmis_field_link':
      foreach ($items as $delta => $item) {
        $element[$delta]['#markup'] = l($item['path'], 'cmis/browser' . $item['path']);
      }
      break;
  }
  return $element;
}