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<?php
/**
* @file
* Administration functions for language.module.
*/
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
/**
* User interface for the language overview screen.
*/
function language_admin_overview_form($form, &$form_state) {
drupal_static_reset('language_list');
$languages = language_list();
$default = language_default();
$form['languages'] = array(
'#languages' => $languages,
'#language_default' => $default,
'#tree' => TRUE,
'#header' => array(
t('Name'),
t('Default'),
t('Weight'),
t('Operations'),
),
'#theme' => 'language_admin_overview_form_table',
);
foreach ($languages as $langcode => $language) {
$form['languages'][$langcode]['#weight'] = $language->weight;
$form['languages'][$langcode]['name'] = array(
'#markup' => check_plain($language->name),
);
$form['languages'][$langcode]['default'] = array(
'#type' => 'radio',
'#parents' => array('site_default'),
'#title' => t('Set @title as default', array('@title' => $language->name)),
'#title_display' => 'invisible',
'#return_value' => $langcode,
'#default_value' => ($langcode == $default->langcode ? $langcode : NULL),
'#id' => 'edit-site-default-' . $langcode,
);
$form['languages'][$langcode]['weight'] = array(
'#type' => 'weight',
'#title' => t('Weight for @title', array('@title' => $language->name)),
'#title_display' => 'invisible',
'#default_value' => $language->weight,
'#attributes' => array(
'class' => array('language-order-weight'),
),
);
$form['languages'][$langcode]['operations'] = array(
'#theme_wrappers' => array('language_admin_operations'),
'#weight' => 100,
);
$form['languages'][$langcode]['operations']['edit'] = array(
'#type' => 'link',
'#title' => t('edit'),
'#href' => 'admin/config/regional/language/edit/' . $langcode,
);
$form['languages'][$langcode]['operations']['delete'] = array(
'#type' => 'link',
'#title' => t('delete'),
'#href' => 'admin/config/regional/language/delete/' . $langcode,
'#access' => $langcode != $default->langcode,
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);
}
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => t('Save configuration'),
);
return $form;
}
/**
* Returns HTML for operation links in language_admin_overview_form() table.
*
* @todo Introduce #type '[table_]operations' or just simply #type 'links'.
*/
function theme_language_admin_operations($variables) {
$links = array();
foreach (element_children($variables['elements']) as $key) {
// Children are only rendered if the current user has access.
if (isset($variables['elements'][$key]['#children'])) {
$links[$key] = $variables['elements'][$key]['#children'];
}
}
// If there are links, render a link list.
if (!empty($links)) {
return theme('item_list__operations', array(
'items' => $links,
'attributes' => array('class' => array('links', 'inline')),
));
}
// Otherwise, ensure to produce no output.
return '';
}
/**
* Returns HTML for the language overview form.
*
* @param $variables
* An associative array containing:
* - form: A render element representing the form.
*
* @ingroup themeable
*/
function theme_language_admin_overview_form_table($variables) {
$form = $variables['form'];
$rows = array();
foreach (element_children($form, TRUE) as $langcode) {
$element = &$form[$langcode];
$row = array(
'class' => array('draggable'),
);
foreach (element_children($element, TRUE) as $column) {
$cell = &$element[$column];
$row['data'][] = drupal_render($cell);
}
$rows[] = $row;
}
$output = theme('table', array(
'header' => $form['#header'],
'rows' => $rows,
'attributes' => array('id' => 'language-order'),
));
$output .= drupal_render_children($form);
drupal_add_tabledrag('language-order', 'order', 'sibling', 'language-order-weight');
return $output;
}
/**
* Process language overview form submissions, updating existing languages.
*/
function language_admin_overview_form_submit($form, &$form_state) {
$languages = language_list();
$old_default = language_default();
foreach ($languages as $langcode => $language) {
$language->default = ($form_state['values']['site_default'] == $langcode);
$language->weight = $form_state['values']['languages'][$langcode]['weight'];
language_save($language);
}
drupal_set_message(t('Configuration saved.'));
}
/**
* User interface for the language addition screen.
*/
function language_admin_add_form($form, &$form_state) {
$predefined_languages = language_admin_predefined_list();
$predefined_languages['custom'] = t('Custom language...');
$predefined_default = !empty($form_state['values']['predefined_langcode']) ? $form_state['values']['predefined_langcode'] : key($predefined_languages);
$form['predefined_langcode'] = array(
'#type' => 'select',
'#title' => t('Language name'),
'#default_value' => $predefined_default,
'#options' => $predefined_languages,
);
$form['predefined_submit'] = array(
'#type' => 'submit',
'#value' => t('Add language'),
'#limit_validation_errors' => array(array('predefined_langcode'), array('predefined_submit')),
'#states' => array(
'invisible' => array(
'select#edit-predefined-langcode' => array('value' => 'custom'),
),
),
'#validate' => array('language_admin_add_predefined_form_validate'),
'#submit' => array('language_admin_add_predefined_form_submit'),
);
$form['custom_language'] = array(
'#type' => 'container',
'#states' => array(
'visible' => array(
'select#edit-predefined-langcode' => array('value' => 'custom'),
),
),
);
_language_admin_common_controls($form['custom_language']);
$form['custom_language']['submit'] = array(
'#type' => 'submit',
'#value' => t('Add custom language'),
'#validate' => array('language_admin_add_custom_form_validate'),
'#submit' => array('language_admin_add_custom_form_submit'),
);
return $form;
}
/**
* Editing screen for a particular language.
*
* @param $langcode
* Language code of the language to edit.
*/
function language_admin_edit_form($form, &$form_state, $language) {
_language_admin_common_controls($form, $language);
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => t('Save language')
);
$form['#submit'][] = 'language_admin_edit_form_submit';
$form['#validate'][] = 'language_admin_edit_form_validate';
return $form;
}
/**
* Common elements of the language addition and editing form.
*
* @param $form
* A parent form item (or empty array) to add items below.
* @param $language
* Language object to edit.
*/
function _language_admin_common_controls(&$form, $language = NULL) {
if (!is_object($language)) {
$language = new stdClass();
}
if (isset($language->langcode)) {
$form['langcode_view'] = array(
'#type' => 'item',
'#title' => t('Language code'),
'#markup' => $language->langcode
);
$form['langcode'] = array(
'#type' => 'value',
'#value' => $language->langcode
);
}
else {
$form['langcode'] = array(
'#type' => 'textfield',
'#title' => t('Language code'),
'#maxlength' => 12,
'#required' => TRUE,
'#default_value' => @$language->langcode,
'#disabled' => (isset($language->langcode)),
'#description' => t('Use language codes as <a href="@w3ctags">defined by the W3C</a> for interoperability. <em>Examples: "en", "en-gb" and "zh-hant".</em>', array('@w3ctags' => 'http://www.w3.org/International/articles/language-tags/')),
);
}
$form['name'] = array(
'#type' => 'textfield',
'#title' => t('Language name'),
'#maxlength' => 64,
'#default_value' => @$language->name,
'#required' => TRUE,
);
$form['direction'] = array(
'#type' => 'radios',
'#title' => t('Direction'),
'#required' => TRUE,
'#description' => t('Direction that text in this language is presented.'),
'#default_value' => @$language->direction,
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'#options' => array(LANGUAGE_LTR => t('Left to right'), LANGUAGE_RTL => t('Right to left')),
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);
return $form;
}
/**
* Element specific validator for the Add language button.
*/
function language_admin_add_predefined_form_validate($form, &$form_state) {
$langcode = $form_state['values']['predefined_langcode'];
if ($langcode == 'custom') {
form_set_error('predefined_langcode', t('Fill in the language details and save the language with <em>Add custom language</em>.'));
}
else {
if (language_load($langcode)) {
form_set_error('predefined_langcode', t('The language %language (%langcode) already exists.', array('%language' => $languages[$langcode]->name, '%langcode' => $langcode)));
}
}
}
/**
* Validate the language addition form on custom language button.
*/
function language_admin_add_custom_form_validate($form, &$form_state) {
if ($form_state['values']['predefined_langcode'] == 'custom') {
$langcode = $form_state['values']['langcode'];
// Reuse the editing form validation routine if we add a custom language.
language_admin_edit_form_validate($form, $form_state);
$languages = language_list();
if (isset($languages[$langcode])) {
form_set_error('langcode', t('The language %language (%langcode) already exists.', array('%language' => $languages[$langcode]->name, '%langcode' => $langcode)));
}
}
else {
form_set_error('predefined_langcode', t('Use the <em>Add language</em> button to save a predefined language.'));
}
}
/**
* Process the custom language addition form submission.
*/
function language_admin_add_custom_form_submit($form, &$form_state) {
$langcode = $form_state['values']['langcode'];
// Custom language form.
$language = (object) array(
'langcode' => $langcode,
'name' => $form_state['values']['name'],
'direction' => $form_state['values']['direction'],
);
language_save($language);
drupal_set_message(t('The language %language has been created and can now be used.', array('%language' => $form_state['values']['name'])));
$form_state['redirect'] = 'admin/config/regional/language';
}
/**
* Process the predefined language addition form submission.
*/
function language_admin_add_predefined_form_submit($form, &$form_state) {
// Predefined language selection.
$langcode = $form_state['values']['predefined_langcode'];
include_once DRUPAL_ROOT . '/core/includes/standard.inc';
$predefined = standard_language_list();
$language = (object) array(
'langcode' => $langcode,
);
language_save($language);
drupal_set_message(t('The language %language has been created and can now be used.', array('%language' => t($predefined[$langcode][0]))));
$form_state['redirect'] = 'admin/config/regional/language';
}
/**
* Validate the language editing form. Reused for custom language addition too.
*/
function language_admin_edit_form_validate($form, &$form_state) {
// Ensure sane field values for langcode and name.
if (!isset($form['langcode_view']) && preg_match('@[^a-zA-Z_-]@', $form_state['values']['langcode'])) {
form_set_error('langcode', t('%field may only contain characters a-z, underscores, or hyphens.', array('%field' => $form['langcode']['#title'])));
}
if ($form_state['values']['name'] != check_plain($form_state['values']['name'])) {
form_set_error('name', t('%field cannot contain any markup.', array('%field' => $form['name']['#title'])));
}
}
/**
* Process the language editing form submission.
*/
function language_admin_edit_form_submit($form, &$form_state) {
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// Prepare a language object for saving.
$languages = language_list();
$langcode = $form_state['values']['langcode'];
$language = $languages[$langcode];
$language->name = $form_state['values']['name'];
$language->direction = $form_state['values']['direction'];
language_save($language);
$form_state['redirect'] = 'admin/config/regional/language';
}
/**
* User interface for the language deletion confirmation screen.
*/
function language_admin_delete_form($form, &$form_state, $language) {
$langcode = $language->langcode;
if (language_default()->langcode == $langcode) {
drupal_set_message(t('The default language cannot be deleted.'));
drupal_goto('admin/config/regional/language');
}
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// For other languages, warn the user that data loss is ahead.
$languages = language_list();
if (!isset($languages[$langcode])) {
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throw new NotFoundHttpException();
}
else {
$form['langcode'] = array('#type' => 'value', '#value' => $langcode);
return confirm_form($form, t('Are you sure you want to delete the language %language?', array('%language' => $languages[$langcode]->name)), 'admin/config/regional/language', t('Deleting a language will remove all interface translations associated with it, and posts in this language will be set to be language neutral. This action cannot be undone.'), t('Delete'), t('Cancel'));
}
}
/**
* Process language deletion submissions.
*/
function language_admin_delete_form_submit($form, &$form_state) {
$langcode = $form_state['values']['langcode'];
$languages = language_list();
$language = $languages[$langcode];
$success = language_delete($langcode);
if ($success) {
$t_args = array('%language' => $language->name, '%langcode' => $language->langcode);
drupal_set_message(t('The %language (%langcode) language has been removed.', $t_args));
}
$form_state['redirect'] = 'admin/config/regional/language';
}
/**
* Prepare a language code list for unused predefined languages.
*/
function language_admin_predefined_list() {
include_once DRUPAL_ROOT . '/core/includes/standard.inc';
$languages = language_list();
$predefined = standard_language_list();
foreach ($predefined as $key => $value) {
if (isset($languages[$key])) {
unset($predefined[$key]);
continue;
}
$predefined[$key] = t($value[0]);
}
asort($predefined);
return $predefined;
}
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/**
* Builds the configuration form for language negotiation.
*/
function language_negotiation_configure_form() {
language_negotiation_include();
$form = array(
'#submit' => array('language_negotiation_configure_form_submit'),
'#theme' => 'language_negotiation_configure_form',
'#language_types' => language_types_get_configurable(FALSE),
'#language_types_info' => language_types_info(),
'#language_negotiation_info' => language_negotiation_info(),
);
foreach ($form['#language_types'] as $type) {
language_negotiation_configure_form_table($form, $type);
}
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => t('Save settings'),
);
return $form;
}
/**
* Builds a language negotiation method configuration table.
*/
function language_negotiation_configure_form_table(&$form, $type) {
$info = $form['#language_types_info'][$type];
$table_form = array(
'#title' => t('@type language detection', array('@type' => $info['name'])),
'#tree' => TRUE,
'#description' => $info['description'],
'#language_negotiation_info' => array(),
'#show_operations' => FALSE,
'weight' => array('#tree' => TRUE),
);
$negotiation_info = $form['#language_negotiation_info'];
$enabled_methods = variable_get("language_negotiation_$type", array());
$methods_weight = variable_get("language_negotiation_methods_weight_$type", array());
// Add missing data to the methods lists.
foreach ($negotiation_info as $method_id => $method) {
if (!isset($methods_weight[$method_id])) {
$methods_weight[$method_id] = isset($method['weight']) ? $method['weight'] : 0;
}
}
// Order methods list by weight.
asort($methods_weight);
foreach ($methods_weight as $method_id => $weight) {
// A language method might be no more available if the defining module has
// been disabled after the last configuration saving.
if (!isset($negotiation_info[$method_id])) {
continue;
}
$enabled = isset($enabled_methods[$method_id]);
$method = $negotiation_info[$method_id];
// List the method only if the current type is defined in its 'types' key.
// If it is not defined default to all the configurable language types.
$types = array_flip(isset($method['types']) ? $method['types'] : $form['#language_types']);
if (isset($types[$type])) {
$table_form['#language_negotiation_info'][$method_id] = $method;
$method_name = check_plain($method['name']);
$table_form['weight'][$method_id] = array(
'#type' => 'weight',
'#title' => t('Weight for !title language detection method', array('!title' => drupal_strtolower($method_name))),
'#title_display' => 'invisible',
'#default_value' => $weight,
'#attributes' => array('class' => array("language-method-weight-$type")),
);
$table_form['title'][$method_id] = array('#markup' => $method_name);
$table_form['enabled'][$method_id] = array(
'#type' => 'checkbox',
'#title' => t('Enable !title language detection method', array('!title' => drupal_strtolower($method_name))),
'#title_display' => 'invisible',
'#default_value' => $enabled,
);
if ($method_id === LANGUAGE_NEGOTIATION_DEFAULT) {
$table_form['enabled'][$method_id]['#default_value'] = TRUE;
$table_form['enabled'][$method_id]['#attributes'] = array('disabled' => 'disabled');
}
$table_form['description'][$method_id] = array('#markup' => filter_xss_admin($method['description']));
$config_op = array();
if (isset($method['config'])) {
$config_op = array('#type' => 'link', '#title' => t('Configure'), '#href' => $method['config']);
// If there is at least one operation enabled show the operation column.
$table_form['#show_operations'] = TRUE;
}
$table_form['operation'][$method_id] = $config_op;
}
}
$form[$type] = $table_form;
}
/**
* Returns HTML for the language negotiation configuration form.
*
* @param $variables
* An associative array containing:
* - form: A render element representing the form.
*
* @ingroup themeable
*/
function theme_language_negotiation_configure_form($variables) {
$form = $variables['form'];
$output = '';
foreach ($form['#language_types'] as $type) {
$rows = array();
$title = '<label>' . $form[$type]['#title'] . '</label>';
$description = '<div class="description">' . $form[$type]['#description'] . '</div>';
foreach ($form[$type]['title'] as $id => $element) {
// Do not take form control structures.
if (is_array($element) && element_child($id)) {
$row = array(
'data' => array(
'<strong>' . drupal_render($form[$type]['title'][$id]) . '</strong>',
drupal_render($form[$type]['description'][$id]),
drupal_render($form[$type]['enabled'][$id]),
drupal_render($form[$type]['weight'][$id]),
),
'class' => array('draggable'),
);
if ($form[$type]['#show_operations']) {
$row['data'][] = drupal_render($form[$type]['operation'][$id]);
}
$rows[] = $row;
}
}
$header = array(
array('data' => t('Detection method')),
array('data' => t('Description')),
array('data' => t('Enabled')),
array('data' => t('Weight')),
);
// If there is at least one operation enabled show the operation column.
if ($form[$type]['#show_operations']) {
$header[] = array('data' => t('Operations'));
}
$variables = array(
'header' => $header,
'rows' => $rows,
'attributes' => array('id' => "language-negotiation-methods-$type"),
);
$table = theme('table', $variables);
$table .= drupal_render_children($form[$type]);
drupal_add_tabledrag("language-negotiation-methods-$type", 'order', 'sibling', "language-method-weight-$type");
$output .= '<div class="form-item">' . $title . $description . $table . '</div>';
}
$output .= drupal_render_children($form);
return $output;
}
/**
* Submit handler for language negotiation settings.
*/
function language_negotiation_configure_form_submit($form, &$form_state) {
$configurable_types = $form['#language_types'];
foreach ($configurable_types as $type) {
$method_weights = array();
$enabled_methods = $form_state['values'][$type]['enabled'];
$enabled_methods[LANGUAGE_NEGOTIATION_DEFAULT] = TRUE;
$method_weights_input = $form_state['values'][$type]['weight'];
foreach ($method_weights_input as $method_id => $weight) {
if ($enabled_methods[$method_id]) {
$method_weights[$method_id] = $weight;
}
}
language_negotiation_set($type, $method_weights);
variable_set("language_negotiation_methods_weight_$type", $method_weights_input);
}
// Update non-configurable language types and the related language negotiation
// configuration.
language_types_set();
$form_state['redirect'] = 'admin/config/regional/language/detection';
drupal_set_message(t('Language negotiation configuration saved.'));
}
/**
* Builds the URL language negotiation method configuration form.
*/
function language_negotiation_configure_url_form($form, &$form_state) {
global $base_url;
language_negotiation_include();
$form['language_negotiation_url_part'] = array(
'#title' => t('Part of the URL that determines language'),
'#type' => 'radios',
'#options' => array(
LANGUAGE_NEGOTIATION_URL_PREFIX => t('Path prefix'),
LANGUAGE_NEGOTIATION_URL_DOMAIN => t('Domain'),
),
'#default_value' => variable_get('language_negotiation_url_part', LANGUAGE_NEGOTIATION_URL_PREFIX),
);
$form['prefix'] = array(
'#type' => 'fieldset',
'#tree' => TRUE,
'#title' => t('Path prefix configuration'),
'#description' => t('Language codes or other custom text to use as a path prefix for URL language detection. For the default language, this value may be left blank. <strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "deutsch" as the path prefix code for German results in URLs like "example.com/deutsch/contact".'),
'#states' => array(
'visible' => array(
':input[name="language_negotiation_url_part"]' => array(
'value' => (string) LANGUAGE_NEGOTIATION_URL_PREFIX,
),
),
),
);
$form['domain'] = array(
'#type' => 'fieldset',
'#tree' => TRUE,
'#title' => t('Domain configuration'),
'#description' => t('The domain names to use for these languages. Leave blank for the default language. Use with caution in a production environment.<strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "de.example.com" as language domain for German will result in an URL like "http://de.example.com/contact".'),
'#states' => array(
'visible' => array(
':input[name="language_negotiation_url_part"]' => array(
'value' => (string) LANGUAGE_NEGOTIATION_URL_DOMAIN,
),
),
),
);
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$languages = language_list();
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$prefixes = language_negotiation_url_prefixes();
$domains = language_negotiation_url_domains();
foreach ($languages as $langcode => $language) {
$form['prefix'][$langcode] = array(
'#type' => 'textfield',
'#title' => t('%language (%langcode) path prefix', array('%language' => $language->name, '%langcode' => $language->langcode)),
'#maxlength' => 64,
'#default_value' => isset($prefixes[$langcode]) ? $prefixes[$langcode] : '',
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'#field_prefix' => $base_url . '/',
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$form['domain'][$langcode] = array(
'#type' => 'textfield',
'#title' => t('%language (%langcode) domain', array('%language' => $language->name, '%langcode' => $language->langcode)),
'#maxlength' => 128,
'#default_value' => isset($domains[$langcode]) ? $domains[$langcode] : '',
);
}
$form_state['redirect'] = 'admin/config/regional/language/detection';
$form['actions']['#type'] = 'actions';
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => t('Save configuration'),
);
return $form;
}
/**
* Validates the URL language negotiation method configuration.
*
* Validate that the prefixes and domains are unique, and make sure that
* the prefix and domain are only blank for the default.
*/
function language_negotiation_configure_url_form_validate($form, &$form_state) {
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$languages = language_list();
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// Count repeated values for uniqueness check.
$count = array_count_values($form_state['values']['prefix']);
foreach ($languages as $langcode => $language) {
$value = $form_state['values']['prefix'][$langcode];
if ($value === '') {
if (!$language->default && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_PREFIX) {
// Throw a form error if the prefix is blank for a non-default language,
// although it is required for selected negotiation type.
form_error($form['prefix'][$langcode], t('The prefix may only be left blank for the default language.'));
}
}
elseif (isset($count[$value]) && $count[$value] > 1) {
// Throw a form error if there are two languages with the same
// domain/prefix.
form_error($form['prefix'][$langcode], t('The prefix for %language, %value, is not unique.', array('%language' => $language->name, '%value' => $value)));
}
}
// Count repeated values for uniqueness check.
$count = array_count_values($form_state['values']['domain']);
foreach ($languages as $langcode => $language) {
$value = $form_state['values']['domain'][$langcode];
if ($value === '') {
if (!$language->default && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_DOMAIN) {
// Throw a form error if the domain is blank for a non-default language,
// although it is required for selected negotiation type.
form_error($form['domain'][$langcode], t('The domain may only be left blank for the default language.'));
}
}
elseif (isset($count[$value]) && $count[$value] > 1) {
// Throw a form error if there are two languages with the same
// domain/domain.
form_error($form['domain'][$langcode], t('The domain for %language, %value, is not unique.', array('%language' => $language->name, '%value' => $value)));
}
}
// Domain names should not contain protocol and/or ports.
foreach ($languages as $langcode => $name) {
$value = $form_state['values']['domain'][$langcode];
if (!empty($value)) {
// Ensure we have exactly one protocol when checking the hostname.
$host = 'http://' . str_replace(array('http://', 'https://'), '', $value);
if (parse_url($host, PHP_URL_HOST) != $value) {
form_error($form['domain'][$langcode], t('The domain for %language may only contain the domain name, not a protocol and/or port.', array('%language' => $name)));
}
}
}
}
/**
* Saves the URL language negotiation method settings.
*/
function language_negotiation_configure_url_form_submit($form, &$form_state) {
// Save selected format (prefix or domain).
variable_set('language_negotiation_url_part', $form_state['values']['language_negotiation_url_part']);
// Save new domain and prefix values.
language_negotiation_url_prefixes_save($form_state['values']['prefix']);
language_negotiation_url_domains_save($form_state['values']['domain']);
drupal_set_message(t('Configuration saved.'));
}
/**
* Builds the session language negotiation method configuration form.
*/
function language_negotiation_configure_session_form($form, &$form_state) {
$form['language_negotiation_session_param'] = array(
'#title' => t('Request/session parameter'),
'#type' => 'textfield',
'#default_value' => variable_get('language_negotiation_session_param', 'language'),
'#description' => t('Name of the request/session parameter used to determine the desired language.'),
);
$form_state['redirect'] = 'admin/config/regional/language/detection';
return system_settings_form($form);
}