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<?php
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// $Id: dynamic_persistent_menu.module,v 1.2 2009/07/31 21:49:14 yrocq Exp $
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/**
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* @file
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* Display a dynamic horizontal menu which degrades gracefully if Javascript is not present
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*/
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/**
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* Implementation of hook_block
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*/
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function dynamic_persistent_menu_block($op= 'list', $delta = 0, $edit = array()) {
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switch ($op) {
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case 'list':
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$block[0]['info'] = t('Dynamic persistent menu');
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$block[0]['cache'] = BLOCK_NO_CACHE;
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return $block;
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break;
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case 'view':
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$params = explode(':',variable_get('dynamic_persistent_menu_menu_root', 'navigation:0'));
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$block['content'] = theme('dynamic_persistent_menu', $params[0], $params[1], variable_get('dynamic_persistent_menu_sub_menu_timeout', 2000));
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return $block;
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break;
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case 'configure':
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$options = menu_parent_options(menu_get_menus(), 0);
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$form['dynamic_persistent_menu_menu_root'] = array(
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'#type' => 'select',
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'#title' => t('Menu root'),
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'#default_value' => variable_get('dynamic_persistent_menu_menu_root', 'navigation:0'),
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'#options' => $options,
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'#description' => t('Choose the menu you wish to display in the block')
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);
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$form['dynamic_persistent_menu_sub_menu_timeout'] = array(
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'#type' => 'textfield',
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'#title' => t('Sub-menu timeout'),
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'#default_value' => variable_get('dynamic_persistent_menu_sub_menu_timeout', 2000),
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'#description' => t('Time before menu hiding when the mouse pointer leaves the parent menu (in milliseconds)')
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);
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return $form;
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case 'save':
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variable_set('dynamic_persistent_menu_menu_root', $edit['dynamic_persistent_menu_menu_root']);
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variable_set('dynamic_persistent_menu_sub_menu_timeout', (int) $edit['dynamic_persistent_menu_sub_menu_timeout']);
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break;
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}
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}
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/**
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* Implementation of hook_theme
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*/
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function dynamic_persistent_menu_theme() {
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return array(
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'dynamic_persistent_menu' => array(
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'arguments' => array(
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'menu' => NULL,
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'parent' => NULL,
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'timeout' => NULL
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),
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),
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'dynamic_persistent_menu_menu_item' => array(
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'arguments' => array(
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'link' => NULL,
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'extra_class' => NULL,
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'id' => NULL
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)
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)
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);
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}
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/**
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* Theme functions
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*/
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function theme_dynamic_persistent_menu($menu_name, $mlid, $timeout) {
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$item_class = "dynamic-persistent-menu-menu-item";
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$sub_item_class = "dynamic-persistent-menu-sub-menu-item";
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// Find menu item in the menu tree
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$menu_tree = menu_tree_all_data($menu_name);
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$menu_link = menu_link_load($mlid);
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if ($mlid != 0) {
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for ($i=1; $i<10; $i++) {
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foreach($menu_tree as $menu_item) {
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if ($menu_item["link"]['mlid'] == $mlid) {
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$menu = $menu_item['below'];
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break 2;
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}
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else {
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if ($menu_item["link"]['mlid'] == $menu_link['p'.$i]) {
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$menu_tree = $menu_item['below'];
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break;
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}
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}
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}
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}
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}
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else {
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$menu = $menu_tree;
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}
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// Don't display anything if the selected menu has no children
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if (!$menu) {
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return;
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}
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// Backup active menu trail and set a new one
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$active_menu_name = menu_get_active_menu_name();
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menu_set_active_menu_name($menu_name);
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// Build table of mlid in the active trail
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foreach (menu_set_active_trail() as $value) {
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if ($value['mlid']) {
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$trail[] = $value['mlid'];
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}
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}
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// Restore active menu trail
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menu_set_active_menu_name($active_menu_name);
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// Build the menus
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$output = '<ul style="display:inline" class="dynamic-persistent-menu-menu">';
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foreach($menu as $menu_item) {
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$link = $menu_item['link'];
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if ($link['hidden'] == 0) {
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if($link['has_children']) {
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if (is_array($trail) && in_array($link['mlid'], $trail)) {
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$display = 'block';
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$over_menu_default = $link['mlid'];
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}
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else {
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$display = 'none';
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}
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}
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if (is_array($trail) && in_array($link['mlid'], $trail)) {
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$link['in_active_trail'] = TRUE;
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}
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$output .= theme('dynamic_persistent_menu_menu_item', $link, 'dynamic-persistent-menu-menu-item', 'dynamic-persistent-menu-menu'.$link['mlid']);
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// Submenu
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if ($menu_item['link']['has_children']) {
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$submenu_items ='';
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foreach($menu_item['below'] as $submenu_item) {
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$link2 = $submenu_item['link'];
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if ($link2['hidden'] == 0) {
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if (is_array($trail) && in_array($link2['mlid'], $trail)) {
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$link2['in_active_trail'] = TRUE;
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}
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$submenu_items .= theme('dynamic_persistent_menu_menu_item', $link2, 'dynamic-persistent-menu-sub-menu-item', 'dynamic-persistent-menu-sub-menu-item'.$link2['mlid']);;
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}
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}
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if ($submenu_items !='') {
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$submenu .= '<ul class="block dynamic-persistent-menu-sub-menu" id="dynamic-persistent-menu-sub-menu'. $link['mlid'] .'" style="display:'. $display .'">';
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$submenu .= $submenu_items;
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$submenu .= '</ul>';
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}
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}
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}
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}
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$output .= '</ul>';
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$output .= $submenu;
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drupal_add_js("overMenuDefault = 'dynamic-persistent-menu-menu". $over_menu_default ."';", 'inline');
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drupal_add_js("subMenuTimeout = $timeout;", 'inline');
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drupal_add_js(drupal_get_path('module', 'dynamic_persistent_menu') .'/dynamic_persistent_menu.js');
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return $output;
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}
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/**
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* Generate the HTML output for a menu item and submenu item.
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*
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* @ingroup themeable
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*/
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function theme_dynamic_persistent_menu_menu_item($link, $extra_class = NULL, $id = NULL) {
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if (!empty($extra_class)) {
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$class .= ' '. $extra_class;
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}
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if ($link['in_active_trail']) {
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$class .= ' active-trail';
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}
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return '<li style="display:inline" class="'. $class .'" id="'.$id.'">'. theme('menu_item_link', $link) ."</li>\n";
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}
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