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modules/i18n/i18nmenu/i18nmenu.module
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461
modules/i18n/i18nmenu/i18nmenu.module
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<?php
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/**
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* @file
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* Internationalization (i18n) submodule: Menu translation.
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*
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* @author Jose A. Reyero, 2005
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*
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*/
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/**
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* Implementation of hook_locale().
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*/
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function i18nmenu_locale($op = 'groups', $group = NULL) {
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switch ($op) {
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case 'groups':
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return array('menu' => t('Menu'));
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case 'info':
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$info['menu']['refresh callback'] = 'i18nmenu_locale_refresh';
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$info['menu']['format'] = FALSE;
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return $info;
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}
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}
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/**
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* Refresh locale strings.
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*/
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function i18nmenu_locale_refresh() {
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// Rebuild menus to ensure all items are altered in i18nmenu_menu_link_alter().
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menu_rebuild();
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i18n_selection_mode('off');
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foreach (menu_get_menus() as $name => $title) {
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$tree = menu_tree_all_data($name);
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i18nmenu_localize_tree($tree, TRUE);
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}
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i18n_selection_mode('reset');
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return TRUE; // Meaning it completed with no issues
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}
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/**
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* Implementation of hook_menu_link_alter().
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*
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* Catch changed links, update language and set alter option.
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*/
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function i18nmenu_menu_link_alter(&$item, $menu) {
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// If we set option to language it causes an error with the link system
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// This should handle language only as the links are being manually updated
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if (!empty($item['language'])) {
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$item['options']['langcode'] = $item['language'];
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}
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elseif (isset($item['language'])) {
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unset($item['options']['langcode']);
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}
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// If we are handling custom menu items of menu module and no language is set,
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// invoke translation via i18nstrings module.
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if (empty($item['language']) && $item['module'] == 'menu') {
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// Set title_callback to FALSE to avoid calling t().
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$item['title_callback'] = FALSE;
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// Setting the alter option to true ensures that
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// hook_translated_menu_link_alter() will be called.
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$item['options']['alter'] = TRUE;
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}
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}
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/**
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* Implementation of hook_translated_menu_link_alter().
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*
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* Translate menu links on the fly.
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*
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* @see i18nmenu_menu_link_alter()
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*/
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function i18nmenu_translated_menu_link_alter(&$item, $map) {
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if ($item['module'] == 'menu') {
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$item['title'] = _i18nmenu_get_item_title($item);
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$item['localized_options']['attributes']['title'] = _i18nmenu_get_item_description($item);
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}
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}
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/**
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* Implementation of hook_help().
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*/
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function i18nmenu_help($path, $arg) {
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switch ($path) {
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case 'admin/help#i18nmenu' :
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$output = '<p>'. t('This module provides support for translatable custom menu items:') .'</p>';
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$output .= '<ul>';
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$output .= '<li>'. t('Create menus as usual, with names in the default language, usually English. If the menu is already created, no changes are needed.') .'</li>';
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$output .= '<li>'. t('Optionally, you can set up a language for a menu item so it is only displayed for that language.') .'</li>';
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$output .= '</ul>';
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$output .= '<p>'. t('To search and translate strings, use the <a href="@translate-interface">translation interface</a> pages.', array('@translate-interface' => url('admin/build/translate'))) .'</p>';
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return $output;
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}
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}
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/**
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* Get localized menu tree.
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*/
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function i18nmenu_translated_tree($menu_name) {
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static $menu_output = array();
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if (!isset($menu_output[$menu_name])) {
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$tree = menu_tree_page_data($menu_name);
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i18nmenu_localize_tree($tree);
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$menu_output[$menu_name] = menu_tree_output($tree);
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}
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return $menu_output[$menu_name];
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}
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/**
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* Localize menu tree.
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*/
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function i18nmenu_localize_tree(&$tree, $update = FALSE) {
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global $language;
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foreach ($tree as $index => $item) {
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$link = $item['link'];
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if ($link['customized']) {
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// Remove links for other languages than current.
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// Links with language wont be localized.
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if (!empty($link['options']['langcode'])) {
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if ($link['options']['langcode'] != $language->language) {
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unset($tree[$index]);
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}
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}
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else {
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$router = i18nmenu_get_router($link['router_path']);
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// If the title is the same it will be localized by the menu system.
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if ($link['link_title'] != $router['title']) {
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$tree[$index]['link']['title'] = _i18nmenu_get_item_title($link, $update);
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}
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$tree[$index]['link']['localized_options']['attributes']['title'] = _i18nmenu_get_item_description($link, $update);
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// Localize subtree.
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if ($item['below'] !== FALSE) {
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i18nmenu_localize_tree($tree[$index]['below'], $update);
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}
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}
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}
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}
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}
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/**
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* Return an array of localized links for a navigation menu.
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*/
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function i18nmenu_menu_navigation_links($menu_name, $level = 0) {
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// Don't even bother querying the menu table if no menu is specified.
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if (empty($menu_name)) {
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return array();
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}
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// Get the menu hierarchy for the current page.
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$tree = menu_tree_page_data($menu_name);
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i18nmenu_localize_tree($tree);
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// Go down the active trail until the right level is reached.
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while ($level-- > 0 && $tree) {
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// Loop through the current level's items until we find one that is in trail.
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while ($item = array_shift($tree)) {
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if ($item['link']['in_active_trail']) {
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// If the item is in the active trail, we continue in the subtree.
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$tree = empty($item['below']) ? array() : $item['below'];
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break;
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}
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}
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}
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// Create a single level of links.
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$links = array();
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foreach ($tree as $item) {
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if (!$item['link']['hidden']) {
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$class = '';
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$l = $item['link']['localized_options'];
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$l['href'] = $item['link']['href'];
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$l['title'] = $item['link']['title'];
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if ($item['link']['in_active_trail']) {
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$class = ' active-trail';
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}
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// Keyed with the unique mlid to generate classes in theme_links().
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$links['menu-'. $item['link']['mlid'] . $class] = $l;
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}
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}
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return $links;
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}
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/**
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* Replace standard primary and secondary links.
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*/
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function i18nmenu_preprocess_page(&$vars) {
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if (theme_get_setting('toggle_primary_links')) {
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$vars['primary_links'] = i18nmenu_menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'));
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}
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// If the secondary menu source is set as the primary menu, we display the
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// second level of the primary menu.
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if (theme_get_setting('toggle_secondary_links')) {
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if (variable_get('menu_secondary_links_source', 'secondary-links') == variable_get('menu_primary_links_source', 'primary-links')) {
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$vars['secondary_links'] = i18nmenu_menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'), 1);
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}
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else {
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$vars['secondary_links'] = i18nmenu_menu_navigation_links(variable_get('menu_secondary_links_source', 'secondary-links'), 0);
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}
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}
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}
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/**
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* Optionally insert/update and return a localized menu item title.
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*/
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function _i18nmenu_get_item_title($link, $update = FALSE, $langcode = NULL) {
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$key = 'menu:item:'. $link['mlid'] .':title';
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if ($update) {
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i18nstrings_update($key, $link['link_title']);
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}
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return i18nstrings($key, $link['link_title'], $langcode);
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}
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/**
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* Optionally insert/update and return a localized menu item description.
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*/
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function _i18nmenu_get_item_description($link, $update = FALSE, $langcode = NULL) {
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if (empty($link['options']['attributes']['title'])) {
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return;
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}
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$key = 'menu:item:'. $link['mlid'] .':description';
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$description = $link['options']['attributes']['title'];
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if ($update) {
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i18nstrings_update($key, $description);
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}
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return i18nstrings($key, $description, $langcode);
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}
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/**
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* Delete a menu item translation.
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*/
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function _i18nmenu_delete_item($mlid) {
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i18nstrings_remove_string('menu:item:'. $mlid .':title');
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i18nstrings_remove_string('menu:item:'. $mlid .':description');
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}
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/**
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* Get the menu router for this router path.
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*
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* We need the untranslated title to compare, and this will be fast.
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* There's no api function to do this?
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*/
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function i18nmenu_get_router($path) {
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static $cache = array();
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if (!array_key_exists($path, $cache)) {
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$cache[$path] = db_fetch_array(db_query("SELECT title FROM {menu_router} WHERE path = '%s'", $path));
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}
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return $cache[$path];
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}
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/**
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* Implementation of hook_form_form_id_alter().
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*
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* Register a submit callback to process menu title.
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*/
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function i18nmenu_form_menu_edit_menu_alter(&$form, $form_state) {
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$form['#submit'][] = 'i18nmenu_menu_edit_menu_submit';
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}
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/**
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* Submit handler for the menu_edit_item form.
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*
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* On menu item insert or update, save a translation record.
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*/
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function i18nmenu_menu_edit_menu_submit($form, &$form_state) {
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// Ensure we have a menu to work with.
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if (isset($form_state['values']['menu_name']) && isset($form_state['values']['title'])) {
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if ($form['#insert']) {
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$context = 'menu:menu:menu-' . $form_state['values']['menu_name'] . ':title';
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} else {
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$context = 'menu:menu:' . $form_state['values']['menu_name'] . ':title';
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}
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i18nstrings_update_string($context, $form_state['values']['title']);
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}
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}
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/**
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* Implementation of hook_form_form_id_alter().
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*
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* Add a language selector to the menu_edit_item form and register a submit
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* callback to process items.
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*/
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function i18nmenu_form_menu_edit_item_alter(&$form, $form_state) {
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if ($form['menu']['#item'] && isset($form['menu']['#item']['options']['langcode'])) {
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$language = $form['menu']['#item']['options']['langcode'];
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}
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else {
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$language = '';
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}
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$form['menu']['language'] = array(
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'#type' => 'select',
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'#title' => t('Language'),
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'#description' => t('Select a language for this menu item. Choose "All languages" to make the menu item translatable into different languages.'),
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'#options' => array('' => t('All languages')) + locale_language_list('name'),
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'#default_value' => $language,
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);
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array_unshift($form['#validate'], 'i18nmenu_menu_item_prepare_normal_path');
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$form['#submit'][] = 'i18nmenu_menu_item_update';
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}
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/**
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* Normal path should be checked with menu item's language to avoid
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* troubles when a node and it's translation has the same url alias.
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*/
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function i18nmenu_menu_item_prepare_normal_path($form, &$form_state) {
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$item = &$form_state['values']['menu'];
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$normal_path = drupal_get_normal_path($item['link_path'], $item['language']);
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if ($item['link_path'] != $normal_path) {
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drupal_set_message(t('The menu system stores system paths only, but will use the URL alias for display. %link_path has been stored as %normal_path', array('%link_path' => $item['link_path'], '%normal_path' => $normal_path)));
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$item['link_path'] = $normal_path;
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}
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}
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/**
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* Submit handler for the menu_edit_item form.
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*
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* On menu item insert or update, save a translation record.
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*/
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function i18nmenu_menu_item_update($form, &$form_state) {
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// Ensure we have a menu item to work with.
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if (isset($form_state['values']['menu'])) {
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$item = $form_state['values']['menu'];
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_i18nmenu_update_item($item);
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}
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}
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/**
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* Update the translation data for a menu item that has been inserted
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* or updated.
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*
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* @see i18nmenu_menu_item_update()
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* @see i18nmenu_nodeapi()
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*/
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function _i18nmenu_update_item($item) {
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list($item['menu_name'], $item['plid']) = explode(':', $item['parent']);
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// If this was an insert, determine the ID that was set.
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if (!isset($item['mlid'])) {
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$item['mlid'] = db_result(db_query("SELECT MAX(mlid) FROM {menu_links} WHERE link_path = '%s' AND menu_name = '%s' AND module = 'menu' AND plid = %d AND link_title = '%s'", $item['link_path'], $item['menu_name'], $item['plid'], $item['link_title']));
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}
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if (!empty($item['mlid'])) {
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_i18nmenu_get_item_title($item, TRUE);
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_i18nmenu_get_item_description($item, TRUE);
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}
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}
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/**
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* Helper function: load the menu item associated to the current node.
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*/
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function _i18nmenu_node_prepare(&$node) {
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menu_nodeapi($node, 'prepare');
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}
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/**
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* Implementation of hook_form_form_id_alter().
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*
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* Add a submit handler to the the menu item deletion confirmation form.
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*/
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function i18nmenu_form_menu_item_delete_form_alter(&$form, $form_state) {
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$form['#submit'][] = 'i18nmenu_item_delete_submit';
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}
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/**
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* Submit function for the delete button on the menu item editing form.
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*/
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function i18nmenu_item_delete_submit($form, &$form_state) {
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_i18nmenu_delete_item($form['#item']['mlid']);
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}
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/**
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* Implementation of hook_form_alter().
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*
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* Add language to menu settings of the node form, as well as setting defaults
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* to match the translated item's menu settings.
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*/
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function i18nmenu_form_alter(&$form, $form_state, $form_id) {
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if (isset($form['type']) && isset($form['#node']) && $form['type']['#value'] .'_node_form' == $form_id) {
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$node = $form['#node'];
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if (!empty($form['menu'])) {
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// Customized must be set to 1 to save language.
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$form['menu']['customized'] = array('#type' => 'value', '#value' => 1);
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}
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// Do nothing if the node already has a menu.
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if (!empty($node->menu['mlid'])) {
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return;
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}
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// Find the translation source node. If creating a new node,
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// translation_source is set. Otherwise, node_load the tnid.
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// New translation.
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if (!empty($node->translation_source)) {
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$tnode = $node->translation_source;
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}
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// Editing existing translation.
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elseif (!empty($node->nid) && !empty($node->tnid) && $node->nid != $node->tnid) {
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$tnode = node_load($node->tnid);
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}
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// If no translation node, return.
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else {
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return;
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}
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// Prepare the tnode so the menu item will be available.
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_i18nmenu_node_prepare($tnode);
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if ($tnode->menu) {
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// Set default values based on translation source's menu.
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$form['menu']['link_title']['#default_value'] = $tnode->menu['link_title'];
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$form['menu']['weight']['#default_value'] = $tnode->menu['weight'];
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$form['menu']['parent']['#default_value'] = $tnode->menu['menu_name'] .':'. $tnode->menu['plid'];
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}
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}
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}
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/**
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* Implementation of hook_nodeapi().
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*
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* Save or delete menu item strings associated with nodes.
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*/
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function i18nmenu_nodeapi(&$node, $op) {
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switch ($op) {
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case 'presave':
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// Ensure that the menu item language always matches node language.
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if (isset($node->menu) && isset($node->language)) {
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$node->menu['language'] = $node->language;
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}
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break;
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case 'insert':
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case 'update':
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if (isset($node->menu)) {
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$item = $node->menu;
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if (!empty($item['delete'])) {
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_i18nmenu_delete_item($item['mlid']);
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}
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elseif (trim($item['link_title'])) {
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$item['link_title'] = trim($item['link_title']);
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$item['link_path'] = "node/$node->nid";
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_i18nmenu_update_item($item);
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}
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}
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break;
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case 'delete':
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// Delete all menu item link translations that point to this node.
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$result = db_query("SELECT mlid FROM {menu_links} WHERE link_path = 'node/%d' AND module = 'menu'", $node->nid);
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while ($m = db_fetch_array($result)) {
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_i18nmenu_delete_item($m['mlid']);
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||||
}
|
||||
break;
|
||||
case 'prepare translation':
|
||||
if (empty($node->menu['mlid']) && !empty($node->translation_source)) {
|
||||
$tnode = $node->translation_source;
|
||||
// Prepare the tnode so the menu item will be available.
|
||||
node_object_prepare($tnode);
|
||||
$node->menu['link_title'] = $tnode->menu['link_title'];
|
||||
$node->menu['weight'] = $tnode->menu['weight'];
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
Reference in a new issue