diff options
Diffstat (limited to 'modules/book/book.module')
| -rw-r--r-- | modules/book/book.module | 226 |
1 files changed, 162 insertions, 64 deletions
diff --git a/modules/book/book.module b/modules/book/book.module index 595d87d2d..61061f011 100644 --- a/modules/book/book.module +++ b/modules/book/book.module @@ -12,7 +12,7 @@ function book_help($path, $arg) { switch ($path) { case 'admin/help#book': $output = '<h3>' . t('About') . '</h3>'; - $output .= '<p>' . t('The Book module is used for creating structured, multi-page content, such as site resource guides, manuals, and wikis. It allows you to create content that has chapters, sections, subsections, or any similarly-tiered structure. For more information, see the online handbook entry for <a href="@book">Book module</a>.', array('@book' => 'http://drupal.org/handbook/modules/book/')) . '</p>'; + $output .= '<p>' . t('The Book module is used for creating structured, multi-page content, such as site resource guides, manuals, and wikis. It allows you to create content that has chapters, sections, subsections, or any similarly-tiered structure. For more information, see the online handbook entry for <a href="@book">Book module</a>.', array('@book' => 'http://drupal.org/documentation/modules/book/')) . '</p>'; $output .= '<h3>' . t('Uses') . '</h3>'; $output .= '<dl>'; $output .= '<dt>' . t('Adding and managing book content') . '</dt>'; @@ -84,7 +84,12 @@ function book_permission() { } /** - * Inject links into $node as needed. + * Adds relevant book links to the node's links. + * + * @param $node + * The book page node to add links to. + * @param $view_mode + * The view mode of the node. */ function book_node_view_link($node, $view_mode) { $links = array(); @@ -190,14 +195,22 @@ function book_menu() { } /** - * Menu item access callback - determine if the outline tab is accessible. + * Access callback: Determines if the outline tab is accessible. + * + * @param $node + * The node whose outline tab is to be viewed. */ function _book_outline_access($node) { return user_access('administer book outlines') && node_access('view', $node); } /** - * Menu item access callback - determine if the user can remove nodes from the outline. + * Access callback: Determines if the user can remove nodes from the outline. + * + * @param $node + * The node to remove from the outline. + * + * @see book_menu() */ function _book_outline_remove_access($node) { return isset($node->book) && ($node->book['bid'] != $node->nid) && _book_outline_access($node); @@ -347,6 +360,9 @@ function theme_book_title_link($variables) { * * This list may be used for generating a list of all the books, or for building * the options for a form select. + * + * @return + * An array of all books. */ function book_get_books() { $all_books = &drupal_static(__FUNCTION__); @@ -381,7 +397,7 @@ function book_get_books() { } /** - * Implements hook_form_BASE_FORM_ID_alter(). + * Implements hook_form_BASE_FORM_ID_alter() for node_form(). * * Adds the book fieldset to the node form. * @@ -412,7 +428,7 @@ function book_form_node_form_alter(&$form, &$form_state, $form_id) { } /** - * Submit handler to change a node's book. + * Form submission handler for node_form(). * * This handler is run when JavaScript is disabled. It triggers the form to * rebuild so that the "Parent item" options are changed to reflect the newly @@ -421,6 +437,7 @@ function book_form_node_form_alter(&$form, &$form_state, $form_id) { * book_form_update() Ajax callback instead. * * @see book_form_update() + * @see book_form_node_form_alter() */ function book_pick_book_nojs_submit($form, &$form_state) { $form_state['node']->book = $form_state['values']['book']; @@ -428,11 +445,17 @@ function book_pick_book_nojs_submit($form, &$form_state) { } /** - * Build the parent selection form element for the node form or outline tab. + * Builds the parent selection form element for the node form or outline tab. * * This function is also called when generating a new set of options during the - * Ajax callback, so an array is returned that can be used to replace an existing - * form element. + * Ajax callback, so an array is returned that can be used to replace an + * existing form element. + * + * @param $book_link + * A fully loaded menu link that is part of the book hierarchy. + * + * @return + * A parent selection form element. */ function _book_parent_select($book_link) { if (variable_get('menu_override_parent_selector', FALSE)) { @@ -475,7 +498,10 @@ function _book_parent_select($book_link) { } /** - * Build the common elements of the book form for the node and outline forms. + * Builds the common elements of the book form for the node and outline forms. + * + * @param $node + * The node whose form is being viewed. */ function _book_add_form_elements(&$form, &$form_state, $node) { // If the form is being processed during the Ajax callback of our book bid @@ -573,10 +599,17 @@ function book_form_update($form, $form_state) { } /** - * Common helper function to handles additions and updates to the book outline. + * Handles additions and updates to the book outline. + * + * This common helper function performs all additions and updates to the book + * outline through node addition, node editing, node deletion, or the outline + * tab. * - * Performs all additions and updates to the book outline through node addition, - * node editing, node deletion, or the outline tab. + * @param $node + * The node that is being saved, added, deleted, or moved. + * + * @return + * TRUE if the menu link was saved; FALSE otherwise. */ function _book_update_outline($node) { if (empty($node->book['bid'])) { @@ -639,7 +672,7 @@ function _book_update_outline($node) { } /** - * Update the bid for a page and its children when it is moved to a new book. + * Updates the book ID of a page and its children when it moves to a new book. * * @param $book_link * A fully loaded menu link that is part of the book hierarchy. @@ -661,16 +694,17 @@ function book_update_bid($book_link) { } /** - * Get the book menu tree for a page, and return it as a linear array. + * Gets the book menu tree for a page and returns it as a linear array. * * @param $book_link * A fully loaded menu link that is part of the book hierarchy. + * * @return * A linear array of menu links in the order that the links are shown in the * menu, so the previous and next pages are the elements before and after the - * element corresponding to $node. The children of $node (if any) will come - * immediately after it in the array, and links will only be fetched as deep - * as one level deeper than $book_link. + * element corresponding to the current node. The children of the current node + * (if any) will come immediately after it in the array, and links will only + * be fetched as deep as one level deeper than $book_link. */ function book_get_flat_menu($book_link) { $flat = &drupal_static(__FUNCTION__, array()); @@ -686,7 +720,14 @@ function book_get_flat_menu($book_link) { } /** - * Recursive helper function for book_get_flat_menu(). + * Recursively converts a tree of menu links to a flat array. + * + * @param $tree + * A tree of menu links in an array. + * @param $flat + * A flat array of the menu links from $tree. + * + * @see book_get_flat_menu(). */ function _book_flatten_menu($tree, &$flat) { foreach ($tree as $data) { @@ -701,6 +742,13 @@ function _book_flatten_menu($tree, &$flat) { /** * Fetches the menu link for the previous page of the book. + * + * @param $book_link + * A fully loaded menu link that is part of the book hierarchy. + * + * @return + * A fully loaded menu link for the page before the one represented in + * $book_link. */ function book_prev($book_link) { // If the parent is zero, we are at the start of a book. @@ -736,6 +784,13 @@ function book_prev($book_link) { /** * Fetches the menu link for the next page of the book. + * + * @param $book_link + * A fully loaded menu link that is part of the book hierarchy. + * + * @return + * A fully loaded menu link for the page after the one represented in + * $book_link. */ function book_next($book_link) { $flat = book_get_flat_menu($book_link); @@ -751,7 +806,13 @@ function book_next($book_link) { } /** - * Format the menu links for the child pages of the current page. + * Formats the menu links for the child pages of the current page. + * + * @param $book_link + * A fully loaded menu link that is part of the book hierarchy. + * + * @return + * HTML for the links to the child pages of the current page. */ function book_children($book_link) { $flat = book_get_flat_menu($book_link); @@ -780,7 +841,13 @@ function book_children($book_link) { } /** - * Generate the corresponding menu name from a book ID. + * Generates the corresponding menu name from a book ID. + * + * @param $bid + * The book ID for which to make a menu name. + * + * @return + * The menu name. */ function book_menu_name($bid) { return 'book-toc-' . $bid; @@ -820,7 +887,7 @@ function book_node_view($node, $view_mode) { /** * Implements hook_page_alter(). * - * Add the book menu to the list of menus used to build the active trail when + * Adds the book menu to the list of menus used to build the active trail when * viewing a book page. */ function book_page_alter(&$page) { @@ -936,14 +1003,24 @@ function book_node_prepare($node) { } /** - * Find the depth limit for items in the parent select. + * Finds the depth limit for items in the parent select. + * + * @param $book_link + * A fully loaded menu link that is part of the book hierarchy. + * + * @return + * The depth limit for items in the parent select. */ function _book_parent_depth_limit($book_link) { return MENU_MAX_DEPTH - 1 - (($book_link['mlid'] && $book_link['has_children']) ? menu_link_children_relative_depth($book_link) : 0); } /** - * Form altering function for the confirm form for a single node deletion. + * Implements hook_form_FORM_ID_alter() for node_delete_confirm(). + * + * Alters the confirm form for a single node deletion. + * + * @see node_delete_confirm() */ function book_form_node_delete_confirm_alter(&$form, $form_state) { $node = node_load($form['nid']['#value']); @@ -957,23 +1034,29 @@ function book_form_node_delete_confirm_alter(&$form, $form_state) { } /** - * Return an array with default values for a book link. + * Returns an array with default values for a book page's menu link. + * + * @param $nid + * The ID of the node whose menu link is being created. + * + * @return + * The default values for the menu link. */ function _book_link_defaults($nid) { return array('original_bid' => 0, 'menu_name' => '', 'nid' => $nid, 'bid' => 0, 'router_path' => 'node/%', 'plid' => 0, 'mlid' => 0, 'has_children' => 0, 'weight' => 0, 'module' => 'book', 'options' => array()); } /** - * Process variables for book-all-books-block.tpl.php. + * Processes variables for book-all-books-block.tpl.php. * - * The $variables array contains the following arguments: - * - $book_menus + * All non-renderable elements are removed so that the template has full access + * to the structured data but can also simply iterate over all elements and + * render them (as in the default template). * - * All non-renderable elements are removed so that the template has full - * access to the structured data but can also simply iterate over all - * elements and render them (as in the default template). + * The $variables array contains the following elements: + * - book_menus * - * @see book-navigation.tpl.php + * @see book-all-books-block.tpl.php */ function template_preprocess_book_all_books_block(&$variables) { // Remove all non-renderable elements. @@ -985,10 +1068,10 @@ function template_preprocess_book_all_books_block(&$variables) { } /** - * Process variables for book-navigation.tpl.php. + * Processes variables for book-navigation.tpl.php. * - * The $variables array contains the following arguments: - * - $book_link + * The $variables array contains the following elements: + * - book_link * * @see book-navigation.tpl.php */ @@ -1045,13 +1128,13 @@ function template_preprocess_book_navigation(&$variables) { /** * Recursively processes and formats menu items for book_toc(). * - * This helper function recursively modifies the $toc array for each item in - * $tree, ignoring items in the exclude array or at a depth greater than the - * limit. Truncates titles over thirty characters and appends an indentation - * string incremented by depth. + * This helper function recursively modifies the table of contents array for + * each item in the menu tree, ignoring items in the exclude array or at a depth + * greater than the limit. Truncates titles over thirty characters and appends + * an indentation string incremented by depth. * * @param $tree - * The data structure of the book's menu tree. Includes hidden links. + * The data structure of the book's menu tree. Includes hidden links. * @param $indent * A string appended to each menu item title. Increments by '--' per depth * level. @@ -1059,8 +1142,8 @@ function template_preprocess_book_navigation(&$variables) { * Reference to the table of contents array. This is modified in place, so the * function does not have a return value. * @param $exclude - * Optional array of mlid values. Any link whose mlid is in this array will be - * excluded (along with its children). + * Optional array of menu link ID values. Any link whose menu link ID is in + * this array will be excluded (along with its children). * @param $depth_limit * Any link deeper than this value will be excluded (along with its children). */ @@ -1088,10 +1171,12 @@ function _book_toc_recurse($tree, $indent, &$toc, $exclude, $depth_limit) { * @param $depth_limit * Any link deeper than this value will be excluded (along with its children). * @param $exclude - * Optional array of mlid values. Any link whose mlid is in this array - * will be excluded (along with its children). + * Optional array of menu link ID values. Any link whose menu link ID is in + * this array will be excluded (along with its children). + * * @return - * An array of mlid, title pairs for use as options for selecting a book page. + * An array of (menu link ID, title) pairs for use as options for selecting a + * book page. */ function book_toc($bid, $depth_limit, $exclude = array()) { $tree = menu_tree_all_data(book_menu_name($bid)); @@ -1102,12 +1187,12 @@ function book_toc($bid, $depth_limit, $exclude = array()) { } /** - * Process variables for book-export-html.tpl.php. + * Processes variables for book-export-html.tpl.php. * - * The $variables array contains the following arguments: - * - $title - * - $contents - * - $depth + * The $variables array contains the following elements: + * - title + * - contents + * - depth * * @see book-export-html.tpl.php */ @@ -1119,19 +1204,20 @@ function template_preprocess_book_export_html(&$variables) { $variables['language'] = $language; $variables['language_rtl'] = ($language->direction == LANGUAGE_RTL); $variables['head'] = drupal_get_html_head(); + $variables['dir'] = $language->direction ? 'rtl' : 'ltr'; } /** - * Traverse the book tree to build printable or exportable output. + * Traverses the book tree to build printable or exportable output. * - * During the traversal, the $visit_func() callback is applied to each - * node, and is called recursively for each child of the node (in weight, - * title order). + * During the traversal, the $visit_func() callback is applied to each node and + * is called recursively for each child of the node (in weight, title order). * * @param $tree * A subtree of the book menu hierarchy, rooted at the current page. * @param $visit_func * A function callback to be called upon visiting a node in the tree. + * * @return * The output generated in visiting each node. */ @@ -1163,14 +1249,15 @@ function book_export_traverse($tree, $visit_func) { /** * Generates printer-friendly HTML for a node. * - * @see book_export_traverse() - * * @param $node * The node that will be output. * @param $children * All the rendered child nodes within the current node. + * * @return * The HTML generated for the given node. + * + * @see book_export_traverse() */ function book_node_export($node, $children = '') { $build = node_view($node, 'print'); @@ -1182,11 +1269,11 @@ function book_node_export($node, $children = '') { } /** - * Process variables for book-node-export-html.tpl.php. + * Processes variables for book-node-export-html.tpl.php. * - * The $variables array contains the following arguments: - * - $node - * - $children + * The $variables array contains the following elements: + * - node + * - children * * @see book-node-export-html.tpl.php */ @@ -1206,8 +1293,8 @@ function book_type_is_allowed($type) { /** * Implements hook_node_type_update(). * - * Update book module's persistent variables if the machine-readable name of a - * node type is changed. + * Updates the Book module's persistent variables if the machine-readable name + * of a node type is changed. */ function book_node_type_update($type) { if (!empty($type->old_type) && $type->old_type != $type->type) { @@ -1229,9 +1316,18 @@ function book_node_type_update($type) { } /** + * Gets a book menu link by its menu link ID. + * * Like menu_link_load(), but adds additional data from the {book} table. * * Do not call when loading a node, since this function may call node_load(). + * + * @param $mlid + * The menu link ID of the menu item. + * + * @return + * A menu link, with the link translated for rendering and data added from the + * {book} table. */ function book_link_load($mlid) { if ($item = db_query("SELECT * FROM {menu_links} ml INNER JOIN {book} b ON b.mlid = ml.mlid LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = :mlid", array( @@ -1245,13 +1341,15 @@ function book_link_load($mlid) { } /** - * Get the data representing a subtree of the book hierarchy. + * Gets the data representing a subtree of the book hierarchy. * * The root of the subtree will be the link passed as a parameter, so the - * returned tree will contain this item and all its descendents in the menu tree. + * returned tree will contain this item and all its descendents in the menu + * tree. * * @param $link * A fully loaded menu link. + * * @return * An subtree of menu links in an array, in the order they should be rendered. */ |