first import

sites/all/modules/admin_menu/admin_menu.api.php

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+<?php
+
+/**
+ * @file
+ * API documentation for Administration menu.
+ */
+
+/**
+ * Provide expansion arguments for dynamic menu items.
+ *
+ * The map items must be keyed by the dynamic path to expand, i.e. a menu path
+ * containing one or more '%' placeholders. Each map item may have the following
+ * properties:
+ * - parent: The parent menu path to link the expanded items to.
+ * - arguments: An array of argument sets that will be used in the expansion.
+ *   Each set consists of an array of one or more placeholders, which again is
+ *   an array of possible expansion values. Upon expansion, each argument is
+ *   combined with every other argument from the set (technically, the cartesian
+ *   product of all arguments). The expansion values may be empty; that is, you
+ *   do not need to insert logic to skip map items for which no values exist,
+ *   since Administration menu will take care of that.
+ *
+ * @see admin_menu.map.inc
+ */
+function hook_admin_menu_map() {
+  // Expand content types below Structure > Content types.
+  // The key denotes the dynamic path to expand to multiple menu items.
+  $map['admin/structure/types/manage/%node_type'] = array(
+    // Link generated items directly to the "Content types" item.
+    'parent' => 'admin/structure/types',
+    // Create expansion arguments for the '%node_type' placeholder.
+    'arguments' => array(
+      array(
+        '%node_type' => array_keys(node_type_get_types()),
+      ),
+    ),
+  );
+  return $map;
+}
+
+/**
+ * Add to the administration menu content before it is rendered.
+ *
+ * Only use this hook to add new data to the menu structure. Use
+ * hook_admin_menu_output_alter() to *alter* existing data.
+ *
+ * @param array $content
+ *   A structured array suitable for drupal_render(), potentially containing:
+ *   - menu: The administrative menu of links below the path 'admin/*'.
+ *   - icon: The icon menu.
+ *   - account: The user account name and log out link.
+ *   - users: The user counter.
+ *   Additionally, these special properties:
+ *   - #components: The actual components contained in $content are configurable
+ *     and depend on the 'admin_menu_components' configuration value. #components
+ *     holds a copy of that for convenience.
+ *   - #complete: A Boolean indicating whether the complete menu should be built,
+ *     ignoring the current configuration in #components.
+ *   Passed by reference.
+ *
+ * @see hook_admin_menu_output_alter()
+ * @see admin_menu_links_menu()
+ * @see admin_menu_links_icon()
+ * @see admin_menu_links_user()
+ * @see theme_admin_menu_links()
+ */
+function hook_admin_menu_output_build(&$content) {
+  // In case your implementation provides a configurable component, check
+  // whether the component should be displayed:
+  if (empty($content['#components']['shortcut.links']) && !$content['#complete']) {
+    return;
+  }
+
+  // Add new top-level item to the menu.
+  if (isset($content['menu'])) {
+    $content['menu']['myitem'] = array(
+      '#title' => t('My item'),
+      // #attributes are used for list items (LI).
+      '#attributes' => array('class' => array('mymodule-myitem')),
+      '#href' => 'mymodule/path',
+      // #options are passed to l().
+      '#options' => array(
+        'query' => drupal_get_destination(),
+        // Apply a class on the link (anchor).
+        'attributes' => array('class' => array('myitem-link-anchor')),
+      ),
+      // #weight controls the order of links in the resulting item list.
+      '#weight' => 50,
+    );
+  }
+  // Add link to the icon menu to manually run cron.
+  if (isset($content['icon'])) {
+    $content['icon']['myitem']['cron'] = array(
+      '#title' => t('Run cron'),
+      '#access' => user_access('administer site configuration'),
+      '#href' => 'admin/reports/status/run-cron',
+    );
+  }
+}
+
+/**
+ * Change the administration menu content before it is rendered.
+ *
+ * Only use this hook to alter existing data in the menu structure. Use
+ * hook_admin_menu_output_build() to *add* new data.
+ *
+ * @param array $content
+ *   A structured array suitable for drupal_render(). Passed by reference.
+ *
+ * @see hook_admin_menu_output_build()
+ */
+function hook_admin_menu_output_alter(&$content) {
+}
+
+/**
+ * Return content to be replace via JS in the cached menu output.
+ *
+ * @param bool $complete
+ *   A Boolean indicating whether all available components of the menu will be
+ *   output and the cache will be skipped.
+ *
+ * @return array
+ *   An associative array whose keys are jQuery selectors and whose values are
+ *   strings containing the replacement content.
+ */
+function hook_admin_menu_replacements($complete) {
+  $items = array();
+  // If the complete menu is output, then it is uncached and will contain the
+  // current counts already.
+  if (!$complete) {
+    // Check whether the users count component is enabled.
+    $components = variable_get('admin_menu_components', array());
+    if (!empty($components['admin_menu.users']) && ($user_count = admin_menu_get_user_count())) {
+      // Replace the counters in the cached menu output with current counts.
+      $items['.admin-menu-users a'] = $user_count;
+    }
+  }
+  return $items;
+}
+
+/**
+ * Inform about additional module-specific caches that can be cleared.
+ *
+ * Administration menu uses this hook to gather information about available
+ * caches that can be flushed individually. Each returned item forms a separate
+ * menu link below the "Flush all caches" link in the icon menu.
+ *
+ * @return array
+ *   An associative array whose keys denote internal identifiers for a
+ *   particular caches (which can be freely defined, but should be in a module's
+ *   namespace) and whose values are associative arrays containing:
+ *   - title: The name of the cache, without "cache" suffix. This label is
+ *     output as link text, but also for the "!title cache cleared."
+ *     confirmation message after flushing the cache; make sure it works and
+ *     makes sense to users in both locations.
+ *   - callback: The name of a function to invoke to flush the individual cache.
+ */
+function hook_admin_menu_cache_info() {
+  $caches['update'] = array(
+    'title' => t('Update data'),
+    'callback' => '_update_cache_clear',
+  );
+  return $caches;
+}