t('Remote File'),
'label' => t('Remote File'),
'description' => t('Link to a file located on a remote server.'),
'process' => 'filefield_source_remotefile_process',
'value' => 'filefield_source_remotefile_value',
'weight' => 3,
);
return $source;
}
/**
* Implements hook_theme().
*/
function remote_file_source_theme() {
return array(
'filefield_source_remotefile_element' => array(
'render element' => 'element',
),
);
}
/**
* Theme the output of the autocomplete field.
*/
function theme_filefield_source_remotefile_element($variables) {
$element = $variables['element'];
$element['url']['#field_suffix'] = drupal_render($element['select']);
return '' . drupal_render($element['url']) . '
';
}
/**
* A #process callback to extend the filefield_widget element type.
*/
function filefield_source_remotefile_process($element, &$form_state, $form) {
$element['filefield_remotefile'] = array(
'#weight' => 100.5,
'#theme' => 'filefield_source_remotefile_element',
'#filefield_source' => TRUE, // Required for proper theming.
'#filefield_sources_hint_text' => REMOTE_FILE_SOURCE_HINT_TEXT,
);
$element['filefield_remotefile']['url'] = array(
'#type' => 'textfield',
'#maxlength' => NULL,
);
$element['filefield_remotefile']['select'] = array(
'#name' => implode('_', $element['#array_parents']) . '_select',
'#type' => 'submit',
'#value' => t('Select'),
'#validate' => array(),
'#submit' => array('filefield_sources_field_submit'),
'#limit_validation_errors' => array($element['#parents']),
'#ajax' => array(
'path' => 'file/ajax/' . implode('/', $element['#array_parents']) . '/' . $form['form_build_id']['#value'],
'wrapper' => $element['#id'] . '-ajax-wrapper',
'effect' => 'fade',
'method' => 'replace',
),
'#suffix' => '' . t('This field will ignore the file size limitation') . '
',
);
return $element;
}
/**
* A #filefield_value_callback function.
*/
function filefield_source_remotefile_value($element, &$item) {
if (isset($item['filefield_remotefile']['url']) && drupal_strlen($item['filefield_remotefile']['url']) > 0 && $item['filefield_remotefile']['url'] != REMOTE_FILE_SOURCE_HINT_TEXT) {
$value = $item['filefield_remotefile']['url'];
if (!valid_url($value, TRUE)) {
form_error($element, t('Invalid Remote File URL.'));
return;
}
elseif (!file_stream_wrapper_valid_scheme(file_uri_scheme($value))) {
// Check that the scheme is supported.
form_error($element, t('Remote File URLs with the %scheme scheme are not supported.', array('%scheme' => $scheme)));
return;
}
else {
// Check that the file exists.
$request = drupal_http_request($value, array('method' => 'HEAD'));
if (!empty($request->error)) {
form_error($element, t('Unable to fetch file from Remote File URL %url (error @code: %error).', array('%url' => $value, '@code' => $request->code, '%error' => $request->error)));
return;
}
}
try {
$file = remote_stream_wrapper_file_load_by_uri($value);
if (!$file) {
$file = remote_stream_wrapper_file_create_by_uri($value);
$file->status = FALSE;
file_save($file);
}
}
catch (Exception $e) {
form_set_error('url', $e->getMessage());
return;
}
if (empty($file->fid)) {
form_set_error($element, t('Unable to add file from URL %file.', array('%file' => $value)));
return;
}
// Run all the normal validations, minus file size restrictions.
if (isset($element['#upload_validators']['file_validate_size'])) {
unset($element['#upload_validators']['file_validate_size']);
}
if (filefield_sources_element_validate($element, (object) $file)) {
$item = array_merge($item, (array) $file);
}
}
}