PHP WP_Screen::add_help_tab方法代碼示例

 /**
  * Register and handle the help tabs for the import snippets admin page
  */
 private function load_import_help()
 {
     $manage_url = code_snippets()->get_menu_url('manage');
     $this->screen->add_help_tab(array('id' => 'overview', 'title' => __('Overview', 'code-snippets'), 'content' => '<p>' . __('Snippets are similar to plugins - they both extend and expand the functionality of WordPress. Snippets are more light-weight, just a few lines of code, and do not put as much load on your server. Here you can load snippets from a Code Snippets (.xml) import file into the database with your existing snippets.', 'code-snippets') . '</p>'));
     $this->screen->add_help_tab(array('id' => 'import', 'title' => __('Importing', 'code-snippets'), 'content' => '<p>' . __('You can load your snippets from a code snippets (.xml) export file using this page.', 'code-snippets') . sprintf(__('Snippets will be added to the database along with your existing snippets. Regardless of whether the snippets were active on the previous site, imported snippets are always inactive until activated using the <a href="%s">Manage Snippets</a> page.</p>', 'code-snippets'), $manage_url) . '</p>'));
     $this->screen->add_help_tab(array('id' => 'export', 'title' => __('Exporting', 'code-snippets'), 'content' => '<p>' . sprintf(__('You can save your snippets to a Code Snippets (.xml) export file using the <a href="%s">Manage Snippets</a> page.', 'code-snippets'), $manage_url) . '</p>'));
 }

 /**
  * This function adds help tabs and a help sidebar to a screen.
  *
  * @since 0.5.0
  * @param WP_Screen $screen the screen to add the help data to
  * @param array $data help tabs and sidebar (if specified)
  */
 public static function render_help($screen, $data)
 {
     foreach ($data['tabs'] as $slug => $tab) {
         $args = array_merge(array('id' => $slug), $tab);
         $screen->add_help_tab($args);
     }
     if (!empty($data['sidebar'])) {
         $screen->set_help_sidebar($data['sidebar']);
     }
 }

 /**
  * Applies the new sidebar contents based on loaded files.
  *
  * This should be called during WordPress's `load-{$pagenow}` hook.
  *
  * @link https://developer.wordpress.org/reference/hooks/load-pagenow/
  *
  * @todo Allow for file types/extensions other than markdown.
  *
  * @uses Parsedown::text()
  * @uses WP_Screen::add_help_tab()
  *
  * @return @void
  */
 public function applyTabs()
 {
     foreach ($this->_tab_files as $file) {
         $lines = is_readable($file) ? file($file) : false;
         if ($lines) {
             $hash = hash('sha256', $file);
             $args = array('title' => sanitize_text_field($this->get_parsedown()->text(array_shift($lines))), 'id' => esc_attr("{$this->_screen->id}-help-tab-{$hash}"), 'content' => $this->get_parsedown()->text(implode("\n", $lines)));
             preg_match('/-([0-9]+)\\.md$/i', $file, $m);
             if ($m) {
                 $args['priority'] = absint($m[1]);
             }
             $this->_screen->add_help_tab($args);
         }
     }
 }

 /**
  * Add a help tab to current screen
  *
  * @brief Add help tab
  *
  * @param string          $title    Tab title. The title is sanitize and used as id
  * @param callable|string $callback Any string content or callable function for content.
  */
 public function addTab($title, $callable_content)
 {
     // If $callable_content is empty exit
     if (empty($callable_content)) {
         return;
     }
     // Store in global
     $this->tabs[$title] = $callable_content;
     $help_tab = array('id' => sanitize_key($title), 'title' => $title);
     if (is_string($callable_content) && !is_callable($callable_content)) {
         $help_tab['content'] = $callable_content;
     }
     if (is_callable($callable_content)) {
         $help_tab['callback'] = $callable_content;
     }
     $this->currentScreen->add_help_tab($help_tab);
 }

 /**
  * _add_help_tabs
  *
  * Note child classes define their help tabs within the page_config array.
  * @link http://codex.wordpress.org/Function_Reference/add_help_tab
  *
  * @access protected
  * @return void
  */
 protected function _add_help_tabs()
 {
     $tour_buttons = '';
     if (isset($this->_page_config[$this->_req_action])) {
         $config = $this->_page_config[$this->_req_action];
         //is there a help tour for the current route?  if there is let's setup the tour buttons
         if (isset($this->_help_tour[$this->_req_action])) {
             $tb = array();
             $tour_buttons = '<div class="ee-abs-container"><div class="ee-help-tour-restart-buttons">';
             foreach ($this->_help_tour['tours'] as $tour) {
                 //if this is the end tour then we don't need to setup a button
                 if ($tour instanceof EE_Help_Tour_final_stop) {
                     continue;
                 }
                 $tb[] = '<button id="trigger-tour-' . $tour->get_slug() . '" class="button-primary trigger-ee-help-tour">' . $tour->get_label() . '</button>';
             }
             $tour_buttons .= implode('<br />', $tb);
             $tour_buttons .= '</div></div>';
         }
         // let's see if there is a help_sidebar set for the current route and we'll set that up for usage as well.
         if (is_array($config) && isset($config['help_sidebar'])) {
             //check that the callback given is valid
             if (!method_exists($this, $config['help_sidebar'])) {
                 throw new EE_Error(sprintf(__('The _page_config array has a callback set for the "help_sidebar" option.  However the callback given (%s) is not a valid callback.  Doublecheck the spelling and make sure this method exists for the class %s', 'event_espresso'), $config['help_sidebar'], get_class($this)));
             }
             $content = apply_filters('FHEE__' . get_class($this) . '__add_help_tabs__help_sidebar', call_user_func(array($this, $config['help_sidebar'])));
             $content .= $tour_buttons;
             //add help tour buttons.
             //do we have any help tours setup?  Cause if we do we want to add the buttons
             $this->_current_screen->set_help_sidebar($content);
         }
         //if we DON'T have config help sidebar and there ARE toure buttons then we'll just add the tour buttons to the sidebar.
         if (!isset($config['help_sidebar']) && !empty($tour_buttons)) {
             $this->_current_screen->set_help_sidebar($tour_buttons);
         }
         //handle if no help_tabs are set so the sidebar will still show for the help tour buttons
         if (!isset($config['help_tabs']) && !empty($tour_buttons)) {
             $_ht['id'] = $this->page_slug;
             $_ht['title'] = __('Help Tours', 'event_espresso');
             $_ht['content'] = '<p>' . __('The buttons to the right allow you to start/restart any help tours available for this page', 'event_espresso') . '</p>';
             $this->_current_screen->add_help_tab($_ht);
         }
         /**/
         if (!isset($config['help_tabs'])) {
             return;
         }
         //no help tabs for this route
         foreach ((array) $config['help_tabs'] as $tab_id => $cfg) {
             //we're here so there ARE help tabs!
             //make sure we've got what we need
             if (!isset($cfg['title'])) {
                 throw new EE_Error(__('The _page_config array is not set up properly for help tabs.  It is missing a title', 'event_espresso'));
             }
             if (!isset($cfg['filename']) && !isset($cfg['callback']) && !isset($cfg['content'])) {
                 throw new EE_Error(__('The _page_config array is not setup properly for help tabs. It is missing a either a filename reference, or a callback reference or a content reference so there is no way to know the content for the help tab', 'event_espresso'));
             }
             //first priority goes to content.
             if (!empty($cfg['content'])) {
                 $content = !empty($cfg['content']) ? $cfg['content'] : NULL;
                 //second priority goes to filename
             } else {
                 if (!empty($cfg['filename'])) {
                     $file_path = $this->_get_dir() . '/help_tabs/' . $cfg['filename'] . '.help_tab.php';
                     //it's possible that the file is located on decaf route (and above sets up for caf route, if this is the case then lets check decaf route too)
                     $file_path = !is_readable($file_path) ? EE_ADMIN_PAGES . basename($this->_get_dir()) . '/help_tabs/' . $cfg['filename'] . '.help_tab.php' : $file_path;
                     //if file is STILL not readable then let's do a EE_Error so its more graceful than a fatal error.
                     if (!is_readable($file_path) && !isset($cfg['callback'])) {
                         EE_Error::add_error(sprintf(__('The filename given for the help tab %s is not a valid file and there is no other configuration for the tab content.  Please check that the string you set for the help tab on this route (%s) is the correct spelling.  The file should be in %s', 'event_espresso'), $tab_id, key($config), $file_path), __FILE__, __FUNCTION__, __LINE__);
                         return;
                     }
                     $template_args['admin_page_obj'] = $this;
                     $content = EEH_Template::display_template($file_path, $template_args, true);
                 } else {
                     $content = '';
                 }
             }
             //check if callback is valid
             if (empty($content) && (!isset($cfg['callback']) || !method_exists($this, $cfg['callback']))) {
                 EE_Error::add_error(sprintf(__('The callback given for a %s help tab on this page does not content OR a corresponding method for generating the content.  Check the spelling or make sure the method is present.', 'event_espresso'), $cfg['title']), __FILE__, __FUNCTION__, __LINE__);
                 return;
             }
             //setup config array for help tab method
             $id = $this->page_slug . '-' . $this->_req_action . '-' . $tab_id;
             $_ht = array('id' => $id, 'title' => $cfg['title'], 'callback' => isset($cfg['callback']) && empty($content) ? array($this, $cfg['callback']) : NULL, 'content' => $content);
             $this->_current_screen->add_help_tab($_ht);
         }
     }
 }

 /**
  * Display inline help content
  *
  * @since 1.0.0
  *
  * @param WP_Screen $screen current screen
  *
  * @return void
  */
 public static function addHelpTab($screen)
 {
     if (!$screen) {
         return;
     }
     $content = '<p>' . esc_html(__('Twitter Embedded Tweet and Timeline widgets support customization of color theme, link color, and border color inside a rendered widget.', 'twitter')) . '</p>';
     $content .= '<p>' . esc_html(__('Choose a light or dark theme to best match the background color and text color of surrounding content.', 'twitter')) . '</p>';
     $content .= '<p>' . esc_html(__('Link color is applied to linked text including URLs, #hashtags, and @mentions.', 'twitter')) . '</p>';
     $content .= '<p>' . esc_html(__('Border color applies to borders separating Tweet sections or individual Tweets.', 'twitter')) . '</p>';
     $screen->add_help_tab(array('id' => 'twitter-theme-help', 'title' => static::featureName(), 'content' => $content));
 }

 /**
  * Display inline help content
  *
  * @since 1.0.0
  *
  * @param WP_Screen $screen current screen
  *
  * @return void
  */
 public static function addHelpTab($screen)
 {
     if (!$screen) {
         return;
     }
     $content = '<p>' . sprintf(esc_html(__('Site attribution is used to attribute site content to a Twitter account in %1$s and %2$s.', 'twitter')), '<a href="' . esc_url('https://dev.twitter.com/cards/overview', array('https', 'http')) . '">' . esc_html(__('Twitter Cards', 'twitter')) . '</a>', '<a href="' . esc_url('https://support.twitter.com/articles/20170934-twitter-card-analytics-dashboard', array('https', 'http')) . '">' . esc_html(__('Twitter Analytics', 'twitter')) . '</a>') . '</p>';
     $content .= '<p>' . esc_html(__('The account may also be used to note a Tweet originated from a Tweet Button on your site.', 'twitter')) . '</p>';
     $screen->add_help_tab(array('id' => 'twitter-site-attribution-help', 'title' => static::featureName(), 'content' => $content));
 }

 /**
  * Render contextual help menu for an admin page
  *
  * @param WP_Screen $screen
  * @return string
  */
 protected function _renderContextualHelp(WP_Screen $screen)
 {
     $screen->add_help_tab(array('id' => 'overview', 'title' => __('Overview', $this->textDomain()), 'content' => $this->render('help:overview', array(), false)));
     $screen->add_help_tab(array('id' => 'visibility', 'title' => __('Visibility', $this->textDomain()), 'content' => $this->render('help:visibility', array(), false)));
     $screen->add_help_tab(array('id' => 'appearance', 'title' => __('Button Appearance', $this->textDomain()), 'content' => $this->render('help:appearance', array(), false)));
     $screen->add_help_tab(array('id' => 'location', 'title' => __('Button Location', $this->textDomain()), 'content' => $this->render('help:location', array(), false)));
     $screen->add_help_tab(array('id' => 'label', 'title' => __('Button Label', $this->textDomain()), 'content' => $this->render('help:label', array(), false)));
     $screen->add_help_tab(array('id' => 'animation', 'title' => __('Animation Options', $this->textDomain()), 'content' => $this->render('help:animation', array(), false)));
     $screen->add_help_tab(array('id' => 'advanced', 'title' => __('Advanced Options', $this->textDomain()), 'content' => $this->render('help:advanced', array(), false)));
     $screen->add_help_tab(array('id' => 'troubleshooting', 'title' => __('Troubleshooting', $this->textDomain()), 'content' => $this->render('help:troubleshooting', array(), false)));
     return '';
 }