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<?php
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/**
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* Specialized implementation of hook_page_manager_task_tasks(). See api-task.html for
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* more information.
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*/
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function page_manager_blog_page_manager_tasks() {
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if (!module_exists('blog')) {
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return;
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}
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return array(
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// This is a 'page' task and will fall under the page admin UI
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'task type' => 'page',
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'title' => t('All blogs'),
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'admin title' => t('All blogs'),
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'admin description' => t('When enabled, this overrides the default Drupal behavior for the all blogs at <em>/blog</em>. If no variant is selected, the default Drupal most recent blog posts will be shown.'),
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'admin path' => 'blog',
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// Menu hooks so that we can alter the node/%node menu entry to point to us.
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'hook menu alter' => 'page_manager_blog_menu_alter',
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// This is task uses 'context' handlers and must implement these to give the
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// handler data it needs.
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'handler type' => 'context',
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// Allow this to be enabled or disabled:
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'disabled' => variable_get('page_manager_blog_disabled', TRUE),
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'enable callback' => 'page_manager_blog_enable',
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'access callback' => 'page_manager_blog_access_check',
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);
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}
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/**
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* Callback defined by page_manager_blog_page_manager_tasks().
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*
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* Alter the node edit input so that node edit comes to us rather than the
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* normal node edit process.
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*/
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function page_manager_blog_menu_alter(&$items, $task) {
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if (variable_get('page_manager_blog_disabled', TRUE)) {
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return;
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}
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$callback = $items['blog']['page callback'];
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// Override the node edit handler for our purpose.
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if ($callback == 'blog_page_last' || variable_get('page_manager_override_anyway', FALSE)) {
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$items['blog']['page callback'] = 'page_manager_blog';
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$items['blog']['file path'] = $task['path'];
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$items['blog']['file'] = $task['file'];
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}
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else {
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variable_set('page_manager_blog_disabled', TRUE);
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if (!empty($GLOBALS['page_manager_enabling_blog'])) {
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drupal_set_message(t('Page manager module is unable to enable blog because some other module already has overridden with %callback.', array('%callback' => $callback)), 'warning');
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}
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return;
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}
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}
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/**
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* Entry point for our overridden node edit.
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*
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* This function asks its assigned handlers who, if anyone, would like
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* to run with it. If no one does, it passes through to Drupal core's
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* node edit, which is node_page_edit().
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*/
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function page_manager_blog() {
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// Load my task plugin
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$task = page_manager_get_task('blog');
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ctools_include('context');
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ctools_include('context-task-handler');
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$output = ctools_context_handler_render($task, '', array(), array());
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if ($output !== FALSE) {
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return $output;
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}
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module_load_include('inc', 'blog', 'blog.pages');
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$function = 'blog_page_last';
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foreach (module_implements('page_manager_override') as $module) {
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$call = $module . '_page_manager_override';
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if (($rc = $call('blog')) && function_exists($rc)) {
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$function = $rc;
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break;
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}
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}
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// Otherwise, fall back.
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return $function();
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}
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/**
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* Callback to enable/disable the page from the UI.
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*/
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function page_manager_blog_enable($cache, $status) {
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variable_set('page_manager_blog_disabled', $status);
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// Set a global flag so that the menu routine knows it needs
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// to set a message if enabling cannot be done.
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if (!$status) {
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$GLOBALS['page_manager_enabling_blog'] = TRUE;
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}
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}
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/**
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* Callback to determine if a page is accessible.
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*
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* @param $task
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* The task plugin.
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* @param $subtask_id
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* The subtask id
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* @param $contexts
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* The contexts loaded for the task.
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* @return
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* TRUE if the current user can access the page.
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*/
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function page_manager_blog_access_check($task, $subtask_id, $contexts) {
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return user_access('access content');
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}
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