' . implode($breadcrumb_separator, $breadcrumb) . "$trailing_separator$title";
}
}
// Otherwise, return an empty string.
return '';
}
/**
* Implements theme_menu_item_link()
*/
function zen_menu_item_link($link) {
if (empty($link['localized_options'])) {
$link['localized_options'] = array();
}
// If an item is a LOCAL TASK, render it as a tab
if ($link['type'] & MENU_IS_LOCAL_TASK) {
$link['title'] = '' . check_plain($link['title']) . '';
$link['localized_options']['html'] = TRUE;
}
return l($link['title'], $link['href'], $link['localized_options']);
}
/**
* Duplicate of theme_menu_local_tasks() but adds clear-block to tabs.
*/
function zen_menu_local_tasks() {
$output = '';
if ($primary = menu_primary_local_tasks()) {
$output .= '';
}
if ($secondary = menu_secondary_local_tasks()) {
$output .= '';
}
return $output;
}
/**
* Return a set of blocks available for the current user.
*
* @param $region
* Which set of blocks to retrieve.
* @param $show_blocks
* A boolean to determine whether to render sidebar regions or not. Should be
* the same value as passed to theme_page.
* @return
* A string containing the themed blocks for this region.
*
* @see zen_show_blocks_discovery()
*/
function zen_blocks($region, $show_blocks = NULL) {
// Since Drupal 6 doesn't pass $show_blocks to theme_blocks, we manually call
// theme('blocks', NULL, $show_blocks) so that this function can remember the
// value on later calls.
static $render_sidebars = TRUE;
if (!is_null($show_blocks)) {
$render_sidebars = $show_blocks;
}
// If zen_blocks was called with a NULL region, its likely we were just
// setting the $render_sidebars static variable.
if ($region) {
$output = '';
// If $renders_sidebars is FALSE, don't render any region whose name begins
// with "sidebar_".
if (($render_sidebars || (strpos($region, 'sidebar_') !== 0)) && ($list = block_list($region))) {
foreach ($list as $key => $block) {
// $key == module_delta
$output .= theme('block', $block);
}
}
// Add any content assigned to this region through drupal_set_content() calls.
$output .= drupal_get_content($region);
$elements['#children'] = $output;
$elements['#region'] = $region;
return $output ? theme('region', $elements) : '';
}
}
/**
* Examine the $show_blocks variable before template_preprocess_page() is called.
*
* @param $vars
* An array of variables to pass to the page template.
*
* @see zen_blocks()
*/
function zen_show_blocks_discovery(&$vars) {
if ($vars['show_blocks'] == FALSE) {
// Allow zen_blocks() to statically cache the $show_blocks variable. A TRUE
// value is assumed, so we only need to override when $show_blocks is FALSE.
theme('blocks', NULL, FALSE);
}
}
/**
* Override or insert variables into templates before other preprocess functions have run.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered.
*/
function zen_preprocess(&$vars, $hook) {
// In D6, the page.tpl uses a different variable name to hold the classes.
$key = ($hook == 'page' || $hook == 'maintenance_page') ? 'body_classes' : 'classes';
// Create a D7-standard classes_array variable.
if (array_key_exists($key, $vars)) {
// Views (and possibly other modules) have templates with a $classes
// variable that isn't a string, so we leave those variables alone.
if (is_string($vars[$key])) {
$vars['classes_array'] = explode(' ', $vars[$key]);
unset($vars[$key]);
}
}
else {
$vars['classes_array'] = array($hook);
}
}
/**
* Override or insert variables into the page templates.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("page" in this case.)
*/
function zen_preprocess_page(&$vars, $hook) {
// If the user is silly and enables Zen as the theme, add some styles.
if ($GLOBALS['theme'] == 'zen') {
include_once './' . _zen_path() . '/zen-internals/template.zen.inc';
_zen_preprocess_page($vars, $hook);
}
// Add conditional stylesheets.
elseif (!module_exists('conditional_styles')) {
$vars['styles'] .= $vars['conditional_styles'] = variable_get('conditional_styles_' . $GLOBALS['theme'], '');
}
// Classes for body element. Allows advanced theming based on context
// (home page, node of certain type, etc.)
// Remove the mostly useless page-ARG0 class.
if ($index = array_search(preg_replace('![^abcdefghijklmnopqrstuvwxyz0-9-_]+!s', '', 'page-'. drupal_strtolower(arg(0))), $vars['classes_array'])) {
unset($vars['classes_array'][$index]);
}
if (!$vars['is_front']) {
// Add unique class for each page.
$path = drupal_get_path_alias($_GET['q']);
$vars['classes_array'][] = zen_id_safe('page-' . $path);
// Add unique class for each website section.
list($section, ) = explode('/', $path, 2);
if (arg(0) == 'node') {
if (arg(1) == 'add') {
$section = 'node-add';
}
elseif (is_numeric(arg(1)) && (arg(2) == 'edit' || arg(2) == 'delete')) {
$section = 'node-' . arg(2);
}
}
$vars['classes_array'][] = zen_id_safe('section-' . $section);
}
if (theme_get_setting('zen_wireframes')) {
$vars['classes_array'][] = 'with-wireframes'; // Optionally add the wireframes style.
}
// We need to re-do the $layout and body classes because
// template_preprocess_page() assumes sidebars are named 'left' and 'right'.
$vars['layout'] = 'none';
if (!empty($vars['sidebar_first'])) {
$vars['layout'] = 'first';
}
if (!empty($vars['sidebar_second'])) {
$vars['layout'] = ($vars['layout'] == 'first') ? 'both' : 'second';
}
// If the layout is 'none', then template_preprocess_page() will already have
// set a 'no-sidebars' class since it won't find a 'left' or 'right' sidebar.
if ($vars['layout'] != 'none') {
// Remove the incorrect 'no-sidebars' class.
if ($index = array_search('no-sidebars', $vars['classes_array'])) {
unset($vars['classes_array'][$index]);
}
// Set the proper layout body classes.
if ($vars['layout'] == 'both') {
$vars['classes_array'][] = 'two-sidebars';
}
else {
$vars['classes_array'][] = 'one-sidebar';
$vars['classes_array'][] = 'sidebar-' . $vars['layout'];
}
}
}
/**
* Override or insert variables into the maintenance page template.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("maintenance_page" in this case.)
*/
function zen_preprocess_maintenance_page(&$vars, $hook) {
// If Zen is the maintenance theme, add some styles.
if ($GLOBALS['theme'] == 'zen') {
include_once './' . _zen_path() . '/zen-internals/template.zen.inc';
_zen_preprocess_page($vars, $hook);
}
// Add conditional stylesheets.
elseif (!module_exists('conditional_styles')) {
$vars['styles'] .= $vars['conditional_styles'] = variable_get('conditional_styles_' . $GLOBALS['theme'], '');
}
// Classes for body element. Allows advanced theming based on context
// (home page, node of certain type, etc.)
$vars['body_classes_array'] = explode(' ', $vars['body_classes']);
}
/**
* Override or insert variables into the node templates.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("node" in this case.)
*/
function zen_preprocess_node(&$vars, $hook) {
// Create the build_mode variable.
switch ($vars['node']->build_mode) {
case NODE_BUILD_NORMAL:
$vars['build_mode'] = $vars['teaser'] ? 'teaser' : 'full';
break;
case NODE_BUILD_PREVIEW:
$vars['build_mode'] = 'preview';
break;
case NODE_BUILD_SEARCH_INDEX:
$vars['build_mode'] = 'search_index';
break;
case NODE_BUILD_SEARCH_RESULT:
$vars['build_mode'] = 'search_result';
break;
case NODE_BUILD_RSS:
$vars['build_mode'] = 'rss';
break;
case NODE_BUILD_PRINT:
$vars['build_mode'] = 'print';
break;
}
// Create the user_picture variable.
$vars['user_picture'] = $vars['picture'];
// Create the Drupal 7 $display_submitted variable.
$vars['display_submitted'] = theme_get_setting('toggle_node_info_' . $vars['node']->type);
// Special classes for nodes.
// Class for node type: "node-type-page", "node-type-story", "node-type-my-custom-type", etc.
$vars['classes_array'][] = zen_id_safe('node-type-' . $vars['type']);
if ($vars['promote']) {
$vars['classes_array'][] = 'node-promoted';
}
if ($vars['sticky']) {
$vars['classes_array'][] = 'node-sticky';
}
if (!$vars['status']) {
$vars['classes_array'][] = 'node-unpublished';
$vars['unpublished'] = TRUE;
}
else {
$vars['unpublished'] = FALSE;
}
if ($vars['uid'] && $vars['uid'] == $GLOBALS['user']->uid) {
$vars['classes_array'][] = 'node-by-viewer'; // Node is authored by current user.
}
if ($vars['teaser']) {
$vars['classes_array'][] = 'node-teaser'; // Node is displayed as teaser.
}
if (isset($vars['preview'])) {
$vars['classes_array'][] = 'node-preview';
}
}
/**
* Override or insert variables into the comment templates.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("comment" in this case.)
*/
function zen_preprocess_comment(&$vars, $hook) {
include_once './' . _zen_path() . '/zen-internals/template.comment.inc';
_zen_preprocess_comment($vars, $hook);
}
/**
* Preprocess variables for region.tpl.php
*
* Prepare the values passed to the theme_region function to be passed into a
* pluggable template engine. Uses the region name to generate a template file
* suggestions. If none are found, the default region.tpl.php is used.
*
* @see region.tpl.php
*/
function zen_preprocess_region(&$vars, $hook) {
// Create the $content variable that templates expect.
$vars['content'] = $vars['elements']['#children'];
$vars['region'] = $vars['elements']['#region'];
// Setup the default classes.
$region = 'region-' . str_replace('_', '-', $vars['region']);
$vars['classes_array'] = array('region', $region);
// Sidebar regions get a common template suggestion a couple extra classes.
if (strpos($vars['region'], 'sidebar_') === 0) {
$vars['template_files'][] = 'region-sidebar';
$vars['classes_array'][] = 'column';
$vars['classes_array'][] = 'sidebar';
}
// Setup the default template suggestion.
$vars['template_files'][] = $region;
}
/**
* Override or insert variables into the block templates.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("block" in this case.)
*/
function zen_preprocess_block(&$vars, $hook) {
$block = $vars['block'];
// Drupal 7 uses a $content variable instead of $block->content.
$vars['content'] = $block->content;
// Drupal 7 should use a $title variable instead of $block->subject.
$vars['title'] = $block->subject;
// Special classes for blocks.
$vars['classes_array'][] = 'block-' . $block->module;
$vars['classes_array'][] = 'region-' . $vars['block_zebra'];
$vars['classes_array'][] = $vars['zebra'];
$vars['classes_array'][] = 'region-count-' . $vars['block_id'];
$vars['classes_array'][] = 'count-' . $vars['id'];
$vars['edit_links_array'] = array();
if (theme_get_setting('zen_block_editing') && user_access('administer blocks')) {
include_once './' . _zen_path() . '/zen-internals/template.block-editing.inc';
zen_preprocess_block_editing($vars, $hook);
$vars['classes_array'][] = 'with-block-editing';
}
}
/**
* Override or insert variables into templates after preprocess functions have run.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered.
*/
function zen_process(&$vars, $hook) {
if (array_key_exists('classes_array', $vars)) {
$vars['classes'] = implode(' ', $vars['classes_array']);
}
}
/**
* Override or insert variables into the block templates after preprocess functions have run.
*
* @param $vars
* An array of variables to pass to the theme template.
* @param $hook
* The name of the template being rendered ("block" in this case.)
*/
function zen_process_block(&$vars, $hook) {
$vars['edit_links'] = !empty($vars['edit_links_array']) ? '' . implode(' ', $vars['edit_links_array']) . '
' : '';
}
/**
* Converts a string to a suitable html ID attribute.
*
* http://www.w3.org/TR/html4/struct/global.html#h-7.5.2 specifies what makes a
* valid ID attribute in HTML. This function:
*
* - Ensure an ID starts with an alpha character by optionally adding an 'id'.
* - Replaces any character except alphanumeric characters with dashes.
* - Converts entire string to lowercase.
*
* @param $string
* The string
* @return
* The converted string
*/
function zen_id_safe($string) {
// Replace with dashes anything that isn't A-Z, numbers, dashes, or underscores.
$string = strtolower(preg_replace('/[^a-zA-Z0-9-]+/', '-', $string));
// If the first character is not a-z, add 'id' in front.
if (!ctype_lower($string{0})) { // Don't use ctype_alpha since its locale aware.
$string = 'id' . $string;
}
return $string;
}
/**
* Returns the path to the Zen theme.
*
* drupal_get_filename() is broken; see #341140. When that is fixed in Drupal 6,
* replace _zen_path() with drupal_get_path('theme', 'zen').
*/
function _zen_path() {
static $path = FALSE;
if (!$path) {
$matches = drupal_system_listing('zen\.info$', 'themes', 'name', 0);
if (!empty($matches['zen']->filename)) {
$path = dirname($matches['zen']->filename);
}
}
return $path;
}