cms/drupal/modules/shortcut/shortcut.module
changeset 541 e756a8c72c3d
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540:07239de796bb 541:e756a8c72c3d
       
     1 <?php
       
     2 
       
     3 /**
       
     4  * @file
       
     5  * Allows users to manage customizable lists of shortcut links.
       
     6  */
       
     7 
       
     8 /**
       
     9  * The name of the default shortcut set.
       
    10  *
       
    11  * This set will be displayed to any user that does not have another set
       
    12  * assigned, unless overridden by a hook_shortcut_default_set() implementation.
       
    13  */
       
    14 define('SHORTCUT_DEFAULT_SET_NAME', 'shortcut-set-1');
       
    15 
       
    16 /**
       
    17  * Implements hook_help().
       
    18  */
       
    19 function shortcut_help($path, $arg) {
       
    20   global $user;
       
    21 
       
    22   switch ($path) {
       
    23     case 'admin/help#shortcut':
       
    24       $output = '<h3>' . t('About') . '</h3>';
       
    25       $output .= '<p>' . t('The Shortcut module allows users to create sets of <em>shortcut</em> links to commonly-visited pages of the site. Shortcuts are contained within <em>sets</em>. Each user with <em>Select any shortcut set</em> permission can select a shortcut set created by anyone at the site. For more information, see the online handbook entry for <a href="@shortcut">Shortcut module</a>.', array('@shortcut' => 'http://drupal.org/documentation/modules/shortcut/')) . '</p>';
       
    26       $output .= '<h3>' . t('Uses') . '</h3>';
       
    27       $output .= '<dl><dt>' . t('Administering shortcuts') . '</dt>';
       
    28       $output .= '<dd>' . t('Users with the <em>Administer shortcuts</em> permission can manage shortcut sets and edit the shortcuts within sets from the <a href="@shortcuts">Shortcuts administration page</a>.', array('@shortcuts' => url('admin/config/user-interface/shortcut'))) . '</dd>';
       
    29       $output .= '<dt>' . t('Choosing shortcut sets') . '</dt>';
       
    30       $output .= '<dd>' . t('Users with permission to switch shortcut sets can choose a shortcut set to use from the Shortcuts tab of their user account page.') . '</dd>';
       
    31       $output .= '<dt>' . t('Adding and removing shortcuts') . '</dt>';
       
    32       $output .= '<dd>' . t('The Shortcut module creates an add/remove link for each page on your site; the link lets you add or remove the current page from the currently-enabled set of shortcuts (if your theme displays it and you have permission to edit your shortcut set). The core Seven administration theme displays this link next to the page title, as a small + or - sign. If you click on the + sign, you will add that page to your preferred set of shortcuts. If the page is already part of your shortcut set, the link will be a - sign, and will allow you to remove the current page from your shortcut set.') . '</dd>';
       
    33       $output .= '<dt>' . t('Displaying shortcuts') . '</dt>';
       
    34       $output .= '<dd>' . t('You can display your shortcuts by enabling the Shortcuts block on the <a href="@blocks">Blocks administration page</a>. Certain administrative modules also display your shortcuts; for example, the core <a href="@toolbar-help">Toolbar module</a> displays them near the top of the page, along with an <em>Edit shortcuts</em> link.', array('@blocks' => url('admin/structure/block'), '@toolbar-help' => url('admin/help/toolbar'))) . '</dd>';
       
    35       $output .= '</dl>';
       
    36       return $output;
       
    37 
       
    38     case 'admin/config/user-interface/shortcut':
       
    39     case 'admin/config/user-interface/shortcut/%':
       
    40       if (user_access('switch shortcut sets')) {
       
    41         $output = '<p>' . t('Define which shortcut set you are using on the <a href="@shortcut-link">Shortcuts tab</a> of your account page.', array('@shortcut-link' => url("user/{$user->uid}/shortcuts"))) . '</p>';
       
    42         return $output;
       
    43       }
       
    44   }
       
    45 }
       
    46 
       
    47 /**
       
    48  * Implements hook_permission().
       
    49  */
       
    50 function shortcut_permission() {
       
    51   return array(
       
    52     'administer shortcuts' => array(
       
    53       'title' => t('Administer shortcuts'),
       
    54     ),
       
    55     'customize shortcut links' => array(
       
    56       'title' => t('Edit current shortcut set'),
       
    57       'description' => t('Editing the current shortcut set will affect other users if that set has been assigned to or selected by other users. Granting "Select any shortcut set" permission along with this permission will grant permission to edit any shortcut set.'),
       
    58     ),
       
    59     'switch shortcut sets' => array(
       
    60       'title' => t('Select any shortcut set'),
       
    61       'description' => t('From all shortcut sets, select one to be own active set. Without this permission, an administrator selects shortcut sets for users.'),
       
    62     ),
       
    63   );
       
    64 }
       
    65 
       
    66 /**
       
    67  * Implements hook_menu().
       
    68  */
       
    69 function shortcut_menu() {
       
    70   $items['admin/config/user-interface/shortcut'] = array(
       
    71     'title' => 'Shortcuts',
       
    72     'description' => 'Add and modify shortcut sets.',
       
    73     'page callback' => 'shortcut_set_admin',
       
    74     'access arguments' => array('administer shortcuts'),
       
    75     'file' => 'shortcut.admin.inc',
       
    76   );
       
    77   $items['admin/config/user-interface/shortcut/add-set'] = array(
       
    78     'title' => 'Add shortcut set',
       
    79     'page callback' => 'drupal_get_form',
       
    80     'page arguments' => array('shortcut_set_add_form'),
       
    81     'access arguments' => array('administer shortcuts'),
       
    82     'type' => MENU_LOCAL_ACTION,
       
    83     'file' => 'shortcut.admin.inc',
       
    84   );
       
    85   $items['admin/config/user-interface/shortcut/%shortcut_set'] = array(
       
    86     'title' => 'Edit shortcuts',
       
    87     'page callback' => 'drupal_get_form',
       
    88     'page arguments' => array('shortcut_set_customize', 4),
       
    89     'title callback' => 'shortcut_set_title_callback',
       
    90     'title arguments' => array(4),
       
    91     'access callback' => 'shortcut_set_edit_access',
       
    92     'access arguments' => array(4),
       
    93     'file' => 'shortcut.admin.inc',
       
    94   );
       
    95   $items['admin/config/user-interface/shortcut/%shortcut_set/links'] = array(
       
    96     'title' => 'List links',
       
    97     'type' => MENU_DEFAULT_LOCAL_TASK,
       
    98   );
       
    99   $items['admin/config/user-interface/shortcut/%shortcut_set/edit'] = array(
       
   100     'title' => 'Edit set name',
       
   101     'page callback' => 'drupal_get_form',
       
   102     'page arguments' => array('shortcut_set_edit_form', 4),
       
   103     'access callback' => 'shortcut_set_edit_access',
       
   104     'access arguments' => array(4),
       
   105     'type' => MENU_LOCAL_TASK,
       
   106     'file' => 'shortcut.admin.inc',
       
   107     'weight' => 10,
       
   108   );
       
   109   $items['admin/config/user-interface/shortcut/%shortcut_set/delete'] = array(
       
   110     'title' => 'Delete shortcut set',
       
   111     'page callback' => 'drupal_get_form',
       
   112     'page arguments' => array('shortcut_set_delete_form', 4),
       
   113     'access callback' => 'shortcut_set_delete_access',
       
   114     'access arguments' => array(4),
       
   115     'file' => 'shortcut.admin.inc',
       
   116   );
       
   117   $items['admin/config/user-interface/shortcut/%shortcut_set/add-link'] = array(
       
   118     'title' => 'Add shortcut',
       
   119     'page callback' => 'drupal_get_form',
       
   120     'page arguments' => array('shortcut_link_add', 4),
       
   121     'access callback' => 'shortcut_set_edit_access',
       
   122     'access arguments' => array(4),
       
   123     'type' => MENU_LOCAL_ACTION,
       
   124     'file' => 'shortcut.admin.inc',
       
   125   );
       
   126   $items['admin/config/user-interface/shortcut/%shortcut_set/add-link-inline'] = array(
       
   127     'title' => 'Add shortcut',
       
   128     'page callback' => 'shortcut_link_add_inline',
       
   129     'page arguments' => array(4),
       
   130     'access callback' => 'shortcut_set_edit_access',
       
   131     'access arguments' => array(4),
       
   132     'type' => MENU_CALLBACK,
       
   133     'file' => 'shortcut.admin.inc',
       
   134   );
       
   135   $items['admin/config/user-interface/shortcut/link/%menu_link'] = array(
       
   136     'title' => 'Edit shortcut',
       
   137     'page callback' => 'drupal_get_form',
       
   138     'page arguments' => array('shortcut_link_edit', 5),
       
   139     'access callback' => 'shortcut_link_access',
       
   140     'access arguments' => array(5),
       
   141     'file' => 'shortcut.admin.inc',
       
   142   );
       
   143   $items['admin/config/user-interface/shortcut/link/%menu_link/delete'] = array(
       
   144     'title' => 'Delete shortcut',
       
   145     'page callback' => 'drupal_get_form',
       
   146     'page arguments' => array('shortcut_link_delete', 5),
       
   147     'access callback' => 'shortcut_link_access',
       
   148     'access arguments' => array(5),
       
   149     'file' => 'shortcut.admin.inc',
       
   150   );
       
   151   $items['user/%user/shortcuts'] = array(
       
   152     'title' => 'Shortcuts',
       
   153     'page callback' => 'drupal_get_form',
       
   154     'page arguments' => array('shortcut_set_switch', 1),
       
   155     'access callback' => 'shortcut_set_switch_access',
       
   156     'access arguments' => array(1),
       
   157     'type' => MENU_LOCAL_TASK,
       
   158     'file' => 'shortcut.admin.inc',
       
   159   );
       
   160 
       
   161   return $items;
       
   162 }
       
   163 
       
   164 /**
       
   165  * Implements hook_admin_paths().
       
   166  */
       
   167 function shortcut_admin_paths() {
       
   168   $paths = array(
       
   169     'user/*/shortcuts' => TRUE,
       
   170   );
       
   171   return $paths;
       
   172 }
       
   173 
       
   174 /**
       
   175  * Implements hook_theme().
       
   176  */
       
   177 function shortcut_theme() {
       
   178   return array(
       
   179     'shortcut_set_customize' => array(
       
   180       'render element' => 'form',
       
   181       'file' => 'shortcut.admin.inc',
       
   182     ),
       
   183   );
       
   184 }
       
   185 
       
   186 /**
       
   187  * Implements hook_block_info().
       
   188  */
       
   189 function shortcut_block_info() {
       
   190   $blocks['shortcuts']['info'] = t('Shortcuts');
       
   191   // Shortcut blocks can't be cached because each menu item can have a custom
       
   192   // access callback. menu.inc manages its own caching.
       
   193   $blocks['shortcuts']['cache'] = DRUPAL_NO_CACHE;
       
   194   return $blocks;
       
   195 }
       
   196 
       
   197 /**
       
   198  * Implements hook_block_view().
       
   199  */
       
   200 function shortcut_block_view($delta = '') {
       
   201   if ($delta == 'shortcuts') {
       
   202     $shortcut_set = shortcut_current_displayed_set();
       
   203     $data['subject'] = t('@shortcut_set shortcuts', array('@shortcut_set' => $shortcut_set->title));
       
   204     $data['content'] = shortcut_renderable_links($shortcut_set);
       
   205     return $data;
       
   206   }
       
   207 }
       
   208 
       
   209 /**
       
   210  * Access callback for editing a shortcut set.
       
   211  *
       
   212  * @param object $shortcut_set
       
   213  *   (optional) The shortcut set to be edited. If not set, the current user's
       
   214  *   shortcut set will be used.
       
   215  *
       
   216  * @return
       
   217  *   TRUE if the current user has access to edit the shortcut set, FALSE
       
   218  *   otherwise.
       
   219  */
       
   220 function shortcut_set_edit_access($shortcut_set = NULL) {
       
   221   // Sufficiently-privileged users can edit their currently displayed shortcut
       
   222   // set, but not other sets. Shortcut administrators can edit any set.
       
   223   if (user_access('administer shortcuts')) {
       
   224     return TRUE;
       
   225   }
       
   226   if (user_access('customize shortcut links')) {
       
   227     return !isset($shortcut_set) || $shortcut_set == shortcut_current_displayed_set();
       
   228   }
       
   229   return FALSE;
       
   230 }
       
   231 
       
   232 /**
       
   233  * Access callback for deleting a shortcut set.
       
   234  *
       
   235  * @param $shortcut_set
       
   236  *   The shortcut set to be deleted.
       
   237  *
       
   238  * @return
       
   239  *   TRUE if the current user has access to delete shortcut sets and this is
       
   240  *   not the site-wide default set; FALSE otherwise.
       
   241  */
       
   242 function shortcut_set_delete_access($shortcut_set) {
       
   243   // Only admins can delete sets.
       
   244   if (!user_access('administer shortcuts')) {
       
   245     return FALSE;
       
   246   }
       
   247 
       
   248   // Never let the default shortcut set be deleted.
       
   249   if ($shortcut_set->set_name == SHORTCUT_DEFAULT_SET_NAME) {
       
   250     return FALSE;
       
   251   }
       
   252 
       
   253   return TRUE;
       
   254 }
       
   255 
       
   256 /**
       
   257  * Access callback for switching the shortcut set assigned to a user account.
       
   258  *
       
   259  * @param object $account
       
   260  *   (optional) The user account whose shortcuts will be switched. If not set,
       
   261  *   permissions will be checked for switching the logged-in user's own
       
   262  *   shortcut set.
       
   263  *
       
   264  * @return
       
   265  *   TRUE if the current user has access to switch the shortcut set of the
       
   266  *   provided account, FALSE otherwise.
       
   267  */
       
   268 function shortcut_set_switch_access($account = NULL) {
       
   269   global $user;
       
   270 
       
   271   if (user_access('administer shortcuts')) {
       
   272     // Administrators can switch anyone's shortcut set.
       
   273     return TRUE;
       
   274   }
       
   275 
       
   276   if (!user_access('switch shortcut sets')) {
       
   277     // The user has no permission to switch anyone's shortcut set.
       
   278     return FALSE;
       
   279   }
       
   280 
       
   281   if (!isset($account) || $user->uid == $account->uid) {
       
   282     // Users with the 'switch shortcut sets' permission can switch their own
       
   283     // shortcuts sets.
       
   284     return TRUE;
       
   285   }
       
   286 
       
   287   return FALSE;
       
   288 }
       
   289 
       
   290 /**
       
   291  * Access callback for editing a link in a shortcut set.
       
   292  */
       
   293 function shortcut_link_access($menu_link) {
       
   294   // The link must belong to a shortcut set that the current user has access
       
   295   // to edit.
       
   296   if ($shortcut_set = shortcut_set_load($menu_link['menu_name'])) {
       
   297     return shortcut_set_edit_access($shortcut_set);
       
   298   }
       
   299   return FALSE;
       
   300 }
       
   301 
       
   302 /**
       
   303  * Loads the data for a shortcut set.
       
   304  *
       
   305  * @param $set_name
       
   306  *   The name of the shortcut set to load.
       
   307  *
       
   308  * @return object
       
   309  *   If the shortcut set exists, an object containing the following properties:
       
   310  *   - 'set_name': The internal name of the shortcut set.
       
   311  *   - 'title': The title of the shortcut set.
       
   312  *   - 'links': An array of links associated with this shortcut set.
       
   313  *   If the shortcut set does not exist, the function returns FALSE.
       
   314  */
       
   315 function shortcut_set_load($set_name) {
       
   316   $set = db_select('shortcut_set', 'ss')
       
   317   ->fields('ss')
       
   318   ->condition('set_name', $set_name)
       
   319   ->execute()
       
   320   ->fetchObject();
       
   321   if (!$set) {
       
   322     return FALSE;
       
   323   }
       
   324   $set->links = menu_load_links($set_name);
       
   325   return $set;
       
   326 }
       
   327 
       
   328 /**
       
   329  * Saves a shortcut set.
       
   330  *
       
   331  * @param $shortcut_set
       
   332  *   An object containing the following properties:
       
   333  *   - 'title': The title of the shortcut set.
       
   334  *   - 'set_name': (optional) The internal name of the shortcut set. If
       
   335  *     omitted, a new shortcut set will be created, and the 'set_name' property
       
   336  *     will be added to the passed-in object.
       
   337  *   - 'links': (optional) An array of menu links to save for the shortcut set.
       
   338  *     Each link is an array containing at least the following keys (which will
       
   339  *     be expanded to fill in other default values after the shortcut set is
       
   340  *     saved):
       
   341  *     - 'link_path': The Drupal path or external path that the link points to.
       
   342  *     - 'link_title': The title of the link.
       
   343  *     Any other keys accepted by menu_link_save() may also be provided.
       
   344  *
       
   345  * @return
       
   346  *   A constant which is either SAVED_NEW or SAVED_UPDATED depending on whether
       
   347  *   a new set was created or an existing one was updated.
       
   348  *
       
   349  * @see menu_link_save()
       
   350  */
       
   351 function shortcut_set_save(&$shortcut_set) {
       
   352   // First save the shortcut set itself.
       
   353   if (isset($shortcut_set->set_name)) {
       
   354     $return = drupal_write_record('shortcut_set', $shortcut_set, 'set_name');
       
   355   }
       
   356   else {
       
   357     $shortcut_set->set_name = shortcut_set_get_unique_name();
       
   358     $return = drupal_write_record('shortcut_set', $shortcut_set);
       
   359   }
       
   360   // If links were provided for the set, save them.
       
   361   if (isset($shortcut_set->links)) {
       
   362     foreach ($shortcut_set->links as &$link) {
       
   363       // Do not specifically associate these links with the shortcut module,
       
   364       // since other modules may make them editable via the menu system.
       
   365       // However, we do need to specify the correct menu name.
       
   366       $link['menu_name'] = $shortcut_set->set_name;
       
   367       $link['plid'] = 0;
       
   368       menu_link_save($link);
       
   369     }
       
   370     // Make sure that we have a return value, since if the links were updated
       
   371     // but the shortcut set was not, the call to drupal_write_record() above
       
   372     // would not return an indication that anything had changed.
       
   373     if (empty($return)) {
       
   374       $return = SAVED_UPDATED;
       
   375     }
       
   376   }
       
   377   return $return;
       
   378 }
       
   379 
       
   380 /**
       
   381  * Deletes a shortcut set.
       
   382  *
       
   383  * Note that the default set cannot be deleted.
       
   384  *
       
   385  * @param $shortcut_set
       
   386  *   An object representing the shortcut set to delete.
       
   387  *
       
   388  * @return
       
   389  *   TRUE if the set was deleted, FALSE otherwise.
       
   390  */
       
   391 function shortcut_set_delete($shortcut_set) {
       
   392   // Don't allow deletion of the system default shortcut set.
       
   393   if ($shortcut_set->set_name == SHORTCUT_DEFAULT_SET_NAME) {
       
   394     return FALSE;
       
   395   }
       
   396 
       
   397   // First, delete any user assignments for this set, so that each of these
       
   398   // users will go back to using whatever default set applies.
       
   399   db_delete('shortcut_set_users')
       
   400     ->condition('set_name', $shortcut_set->set_name)
       
   401     ->execute();
       
   402 
       
   403   // Next, delete the menu links for this set.
       
   404   menu_delete_links($shortcut_set->set_name);
       
   405 
       
   406   // Finally, delete the set itself.
       
   407   $deleted = db_delete('shortcut_set')
       
   408     ->condition('set_name', $shortcut_set->set_name)
       
   409     ->execute();
       
   410 
       
   411   return (bool) $deleted;
       
   412 }
       
   413 
       
   414 /**
       
   415  * Resets the link weights in a shortcut set to match their current order.
       
   416  *
       
   417  * This function can be used, for example, when a new shortcut link is added to
       
   418  * the set. If the link is added to the end of the array and this function is
       
   419  * called, it will force that link to display at the end of the list.
       
   420  *
       
   421  * @param object $shortcut_set
       
   422  *   An object representing a shortcut set. The link weights of the passed-in
       
   423  *   object will be reset as described above.
       
   424  */
       
   425 function shortcut_set_reset_link_weights(&$shortcut_set) {
       
   426   $weight = -50;
       
   427   foreach ($shortcut_set->links as &$link) {
       
   428     $link['weight'] = $weight;
       
   429     $weight++;
       
   430   }
       
   431 }
       
   432 
       
   433 /**
       
   434  * Assigns a user to a particular shortcut set.
       
   435  *
       
   436  * @param $shortcut_set
       
   437  *   An object representing the shortcut set.
       
   438  * @param $account
       
   439  *   A user account that will be assigned to use the set.
       
   440  */
       
   441 function shortcut_set_assign_user($shortcut_set, $account) {
       
   442   db_merge('shortcut_set_users')
       
   443     ->key(array('uid' => $account->uid))
       
   444     ->fields(array('set_name' => $shortcut_set->set_name))
       
   445     ->execute();
       
   446   drupal_static_reset('shortcut_current_displayed_set');
       
   447 }
       
   448 
       
   449 /**
       
   450  * Unassigns a user from any shortcut set they may have been assigned to.
       
   451  *
       
   452  * The user will go back to using whatever default set applies.
       
   453  *
       
   454  * @param $account
       
   455  *   A user account that will be removed from the shortcut set assignment.
       
   456  *
       
   457  * @return
       
   458  *   TRUE if the user was previously assigned to a shortcut set and has been
       
   459  *   successfully removed from it. FALSE if the user was already not assigned
       
   460  *   to any set.
       
   461  */
       
   462 function shortcut_set_unassign_user($account) {
       
   463   $deleted = db_delete('shortcut_set_users')
       
   464     ->condition('uid', $account->uid)
       
   465     ->execute();
       
   466   return (bool) $deleted;
       
   467 }
       
   468 
       
   469 /**
       
   470  * Returns the current displayed shortcut set for the provided user account.
       
   471  *
       
   472  * @param $account
       
   473  *   (optional) The user account whose shortcuts will be returned. Defaults to
       
   474  *   the currently logged-in user.
       
   475  *
       
   476  * @return
       
   477  *   An object representing the shortcut set that should be displayed to the
       
   478  *   current user. If the user does not have an explicit shortcut set defined,
       
   479  *   the default set is returned.
       
   480  */
       
   481 function shortcut_current_displayed_set($account = NULL) {
       
   482   $shortcut_sets = &drupal_static(__FUNCTION__, array());
       
   483   global $user;
       
   484   if (!isset($account)) {
       
   485     $account = $user;
       
   486   }
       
   487   // Try to return a shortcut set from the static cache.
       
   488   if (isset($shortcut_sets[$account->uid])) {
       
   489     return $shortcut_sets[$account->uid];
       
   490   }
       
   491   // If none was found, try to find a shortcut set that is explicitly assigned
       
   492   // to this user.
       
   493   $query = db_select('shortcut_set', 's');
       
   494   $query->addField('s', 'set_name');
       
   495   $query->join('shortcut_set_users', 'u', 's.set_name = u.set_name');
       
   496   $query->condition('u.uid', $account->uid);
       
   497   $shortcut_set_name = $query->execute()->fetchField();
       
   498   if ($shortcut_set_name) {
       
   499     $shortcut_set = shortcut_set_load($shortcut_set_name);
       
   500   }
       
   501   // Otherwise, use the default set.
       
   502   else {
       
   503     $shortcut_set = shortcut_default_set($account);
       
   504   }
       
   505 
       
   506   $shortcut_sets[$account->uid] = $shortcut_set;
       
   507   return $shortcut_set;
       
   508 }
       
   509 
       
   510 /**
       
   511  * Returns the default shortcut set for a given user account.
       
   512  *
       
   513  * @param object $account
       
   514  *   (optional) The user account whose default shortcut set will be returned.
       
   515  *   If not provided, the function will return the currently logged-in user's
       
   516  *   default shortcut set.
       
   517  *
       
   518  * @return
       
   519  *   An object representing the default shortcut set.
       
   520  */
       
   521 function shortcut_default_set($account = NULL) {
       
   522   global $user;
       
   523   if (!isset($account)) {
       
   524     $account = $user;
       
   525   }
       
   526 
       
   527   // Allow modules to return a default shortcut set name. Since we can only
       
   528   // have one, we allow the last module which returns a valid result to take
       
   529   // precedence. If no module returns a valid set, fall back on the site-wide
       
   530   // default, which is the lowest-numbered shortcut set.
       
   531   $suggestions = array_reverse(module_invoke_all('shortcut_default_set', $account));
       
   532   $suggestions[] = SHORTCUT_DEFAULT_SET_NAME;
       
   533   foreach ($suggestions as $name) {
       
   534     if ($shortcut_set = shortcut_set_load($name)) {
       
   535       break;
       
   536     }
       
   537   }
       
   538 
       
   539   return $shortcut_set;
       
   540 }
       
   541 
       
   542 /**
       
   543  * Returns a unique, machine-readable shortcut set name.
       
   544  */
       
   545 function shortcut_set_get_unique_name() {
       
   546   // Shortcut sets are numbered sequentially, so we keep trying until we find
       
   547   // one that is available. For better performance, we start with a number
       
   548   // equal to one more than the current number of shortcut sets, so that if
       
   549   // no shortcut sets have been deleted from the database, this will
       
   550   // automatically give us the correct one.
       
   551   $number = db_query("SELECT COUNT(*) FROM {shortcut_set}")->fetchField() + 1;
       
   552   do {
       
   553     $name = shortcut_set_name($number);
       
   554     $number++;
       
   555   } while ($shortcut_set = shortcut_set_load($name));
       
   556   return $name;
       
   557 }
       
   558 
       
   559 /**
       
   560  * Returns the name of a shortcut set, based on a provided number.
       
   561  *
       
   562  * All shortcut sets have names like "shortcut-set-N" so that they can be
       
   563  * matched with a properly-namespaced entry in the {menu_links} table.
       
   564  *
       
   565  * @param $number
       
   566  *   A number representing the shortcut set whose name should be retrieved.
       
   567  *
       
   568  * @return
       
   569  *   A string representing the expected shortcut name.
       
   570  */
       
   571 function shortcut_set_name($number) {
       
   572   return "shortcut-set-$number";
       
   573 }
       
   574 
       
   575 /**
       
   576  * Returns an array of all shortcut sets, keyed by the set name.
       
   577  *
       
   578  * @return
       
   579  *   An array of shortcut sets. Note that only the basic shortcut set
       
   580  *   properties (name and title) are returned by this function, not the list
       
   581  *   of menu links that belong to the set.
       
   582  */
       
   583 function shortcut_sets() {
       
   584   return db_select('shortcut_set', 'ss')
       
   585   ->fields('ss')
       
   586   ->execute()
       
   587   ->fetchAllAssoc('set_name');
       
   588 }
       
   589 
       
   590 /**
       
   591  * Check to see if a shortcut set with the given title already exists.
       
   592  *
       
   593  * @param $title
       
   594  *   Human-readable name of the shortcut set to check.
       
   595  *
       
   596  * @return
       
   597  *   TRUE if a shortcut set with that title exists; FALSE otherwise.
       
   598  */
       
   599 function shortcut_set_title_exists($title) {
       
   600   return (bool) db_query_range('SELECT 1 FROM {shortcut_set} WHERE title = :title', 0, 1, array(':title' => $title))->fetchField();
       
   601 }
       
   602 
       
   603 /**
       
   604  * Determines if a path corresponds to a valid shortcut link.
       
   605  *
       
   606  * @param $path
       
   607  *   The path to the link.
       
   608  * @return
       
   609  *   TRUE if the shortcut link is valid, FALSE otherwise. Valid links are ones
       
   610  *   that correspond to actual paths on the site.
       
   611  *
       
   612  * @see menu_edit_item_validate()
       
   613  */
       
   614 function shortcut_valid_link($path) {
       
   615   // Do not use URL aliases.
       
   616   $normal_path = drupal_get_normal_path($path);
       
   617   if ($path != $normal_path) {
       
   618     $path = $normal_path;
       
   619   }
       
   620   // An empty path is valid too and will be converted to <front>.
       
   621   return (!url_is_external($path) && menu_get_item($path)) || empty($path) || $path == '<front>';
       
   622 }
       
   623 
       
   624 /**
       
   625  * Returns an array of shortcut links, suitable for rendering.
       
   626  *
       
   627  * @param $shortcut_set
       
   628  *   (optional) An object representing the set whose links will be displayed.
       
   629  *   If not provided, the user's current set will be displayed.
       
   630  * @return
       
   631  *   An array of shortcut links, in the format returned by the menu system.
       
   632  *
       
   633  * @see menu_tree()
       
   634  */
       
   635 function shortcut_renderable_links($shortcut_set = NULL) {
       
   636   if (!isset($shortcut_set)) {
       
   637     $shortcut_set = shortcut_current_displayed_set();
       
   638   }
       
   639   return menu_tree($shortcut_set->set_name);
       
   640 }
       
   641 
       
   642 /**
       
   643  * Implements hook_preprocess_page().
       
   644  */
       
   645 function shortcut_preprocess_page(&$variables) {
       
   646   // Only display the shortcut link if the user has the ability to edit
       
   647   // shortcuts and if the page's actual content is being shown (for example,
       
   648   // we do not want to display it on "access denied" or "page not found"
       
   649   // pages).
       
   650   if (shortcut_set_edit_access() && ($item = menu_get_item()) && $item['access']) {
       
   651     $link = $_GET['q'];
       
   652     $query_parameters = drupal_get_query_parameters();
       
   653     if (!empty($query_parameters)) {
       
   654      $link .= '?' . drupal_http_build_query($query_parameters);
       
   655     }
       
   656     $query = array(
       
   657      'link' => $link,
       
   658      'name' => drupal_get_title(),
       
   659     );
       
   660     $query += drupal_get_destination();
       
   661 
       
   662     $shortcut_set = shortcut_current_displayed_set();
       
   663 
       
   664     // Check if $link is already a shortcut and set $link_mode accordingly.
       
   665     foreach ($shortcut_set->links as $shortcut) {
       
   666       if ($link == $shortcut['link_path']) {
       
   667         $mlid = $shortcut['mlid'];
       
   668         break;
       
   669       }
       
   670     }
       
   671     $link_mode = isset($mlid) ? "remove" : "add";
       
   672 
       
   673     if ($link_mode == "add") {
       
   674       $query['token'] = drupal_get_token('shortcut-add-link');
       
   675       $link_text = shortcut_set_switch_access() ? t('Add to %shortcut_set shortcuts', array('%shortcut_set' => $shortcut_set->title)) : t('Add to shortcuts');
       
   676       $link_path = 'admin/config/user-interface/shortcut/' . $shortcut_set->set_name . '/add-link-inline';
       
   677     }
       
   678     else {
       
   679       $query['mlid'] = $mlid;
       
   680       $link_text = shortcut_set_switch_access() ? t('Remove from %shortcut_set shortcuts', array('%shortcut_set' => $shortcut_set->title)) : t('Remove from shortcuts');
       
   681       $link_path = 'admin/config/user-interface/shortcut/link/' . $mlid . '/delete';
       
   682     }
       
   683 
       
   684     if (theme_get_setting('shortcut_module_link')) {
       
   685       $variables['title_suffix']['add_or_remove_shortcut'] = array(
       
   686         '#attached' => array('css' => array(drupal_get_path('module', 'shortcut') . '/shortcut.css')),
       
   687         '#prefix' => '<div class="add-or-remove-shortcuts ' . $link_mode . '-shortcut">',
       
   688         '#type' => 'link',
       
   689         '#title' => '<span class="icon"></span><span class="text">' . $link_text . '</span>',
       
   690         '#href' => $link_path,
       
   691         '#options' => array('query' => $query, 'html' => TRUE),
       
   692         '#suffix' => '</div>',
       
   693       );
       
   694     }
       
   695   }
       
   696 }
       
   697 
       
   698 /**
       
   699  * Implements hook_page_alter().
       
   700  */
       
   701 function shortcut_page_alter(&$page) {
       
   702   if (isset($page['page_top']['toolbar'])) {
       
   703     // If the toolbar is available, add a pre-render function to display the
       
   704     // current shortcuts in the toolbar drawer.
       
   705     $page['page_top']['toolbar']['#pre_render'][] = 'shortcut_toolbar_pre_render';
       
   706   }
       
   707 }
       
   708 
       
   709 /**
       
   710  * Pre-render function for adding shortcuts to the toolbar drawer.
       
   711  */
       
   712 function shortcut_toolbar_pre_render($toolbar) {
       
   713   $links = shortcut_renderable_links();
       
   714   $links['#attached'] = array('css' => array(drupal_get_path('module', 'shortcut') . '/shortcut.css'));
       
   715   $links['#prefix'] = '<div class="toolbar-shortcuts">';
       
   716   $links['#suffix'] = '</div>';
       
   717   $shortcut_set = shortcut_current_displayed_set();
       
   718   $configure_link = NULL;
       
   719   if (shortcut_set_edit_access($shortcut_set)) {
       
   720     $configure_link = array(
       
   721       '#type' => 'link',
       
   722       '#title' => t('Edit shortcuts'),
       
   723       '#href' => 'admin/config/user-interface/shortcut/' . $shortcut_set->set_name,
       
   724       '#options' => array('attributes' => array('id' => 'edit-shortcuts')),
       
   725     );
       
   726   }
       
   727 
       
   728   $drawer = array(
       
   729     'shortcuts' => $links,
       
   730     'configure' => $configure_link,
       
   731   );
       
   732 
       
   733   $toolbar['toolbar_drawer'][] = $drawer;
       
   734   return $toolbar;
       
   735 }
       
   736 
       
   737 /**
       
   738  * Returns the sanitized title of a shortcut set.
       
   739  *
       
   740  * Deprecated. This function was previously used as a menu item title callback
       
   741  * but has been replaced by shortcut_set_title_callback() (which does not
       
   742  * sanitize the title, since the menu system does that automatically). In
       
   743  * Drupal 7, use that function for title callbacks, and call check_plain()
       
   744  * directly if you need a sanitized title. In Drupal 8, this function will be
       
   745  * restored as a title callback and therefore will no longer sanitize its
       
   746  * output.
       
   747  *
       
   748  * @param $shortcut_set
       
   749  *   An object representing the shortcut set, as returned by
       
   750  *   shortcut_set_load().
       
   751  */
       
   752 function shortcut_set_title($shortcut_set) {
       
   753   return check_plain($shortcut_set->title);
       
   754 }
       
   755 
       
   756 /**
       
   757  * Returns the title of a shortcut set.
       
   758  *
       
   759  * Title callback for the editing pages for shortcut sets.
       
   760  *
       
   761  * @param $shortcut_set
       
   762  *   An object representing the shortcut set, as returned by
       
   763  *   shortcut_set_load().
       
   764  */
       
   765 function shortcut_set_title_callback($shortcut_set) {
       
   766   return $shortcut_set->title;
       
   767 }