public function __construct($data)
 {
     $a = $this->get_app();
     $this->data = $data;
     $this->toplevel = $this->get_id() == $this->get_data_value('parent');
     // Prepare the children
     if (count($data['children'])) {
         foreach ($data['children'] as $item) {
             /*
              * Only add those that will be displayed
              */
             if (!visible_activity($item) || array_key_exists('author_blocked', $item)) {
                 continue;
             }
             $child = new Item($item);
             $this->add_child($child);
         }
     }
 }

 public function __construct($data)
 {
     $a = $this->get_app();
     $this->data = $data;
     $this->set_template('wall');
     $this->toplevel = $this->get_id() == $this->get_data_value('parent');
     if (is_array($_SESSION['remote'])) {
         foreach ($_SESSION['remote'] as $visitor) {
             if ($visitor['cid'] == $this->get_data_value('contact-id')) {
                 $this->visiting = true;
                 break;
             }
         }
     }
     $this->writable = $this->get_data_value('writable') || $this->get_data_value('self');
     $ssl_state = local_user() ? true : false;
     $this->redirect_url = $a->get_baseurl($ssl_state) . '/redir/' . $this->get_data_value('cid');
     if (get_config('system', 'thread_allow') && $a->theme_thread_allow && !$this->is_toplevel()) {
         $this->threaded = true;
     }
     // Prepare the children
     if (count($data['children'])) {
         foreach ($data['children'] as $item) {
             /*
              * Only add will be displayed
              */
             if ($item['network'] === NETWORK_MAIL && local_user() != $item['uid']) {
                 continue;
             }
             if (!visible_activity($item)) {
                 continue;
             }
             $item['pagedrop'] = $data['pagedrop'];
             $child = new Item($item);
             $this->add_child($child);
         }
     }
 }

 /**
  * @brief
  *
  * @param array $params an assoziative array with:
  *  * \e string \b from_xchan sender xchan hash
  *  * \e string \b to_xchan recipient xchan hash
  *  * \e array \b item an assoziative array
  *  * \e int \b type one of the NOTIFY_* constants from boot.php
  *  * \e string \b link
  *  * \e string \b parent_mid
  *  * \e string \b otype
  *  * \e string \b verb
  *  * \e string \b activity
  */
 public static function submit($params)
 {
     logger('notification: entry', LOGGER_DEBUG);
     // throw a small amount of entropy into the system to breakup duplicates arriving at the same precise instant.
     usleep(mt_rand(0, 10000));
     if ($params['from_xchan']) {
         $x = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($params['from_xchan']));
     }
     if ($params['to_xchan']) {
         $y = q("select channel.*, account.* from channel left join account on channel_account_id = account_id\n\t\t\t\twhere channel_hash = '%s' and channel_removed = 0 limit 1", dbesc($params['to_xchan']));
     }
     if ($x & $y) {
         $sender = $x[0];
         $recip = $y[0];
     } else {
         logger('notification: no sender or recipient.');
         logger('sender: ' . $params['from_xchan']);
         logger('recip: ' . $params['to_xchan']);
         return;
     }
     // from here on everything is in the recipients language
     push_lang($recip['account_language']);
     // should probably have a channel language
     $banner = t('$Projectname Notification');
     $product = t('$projectname');
     // PLATFORM_NAME;
     $siteurl = z_root();
     $thanks = t('Thank You,');
     $sitename = get_config('system', 'sitename');
     $site_admin = sprintf(t('%s Administrator'), $sitename);
     $sender_name = $product;
     $hostname = \App::get_hostname();
     if (strpos($hostname, ':')) {
         $hostname = substr($hostname, 0, strpos($hostname, ':'));
     }
     // Do not translate 'noreply' as it must be a legal 7-bit email address
     $reply_email = get_config('system', 'reply_address');
     if (!$reply_email) {
         $reply_email = 'noreply' . '@' . $hostname;
     }
     $sender_email = get_config('system', 'from_email');
     if (!$sender_email) {
         $sender_email = 'Administrator' . '@' . \App::get_hostname();
     }
     $sender_name = get_config('system', 'from_email_name');
     if (!$sender_name) {
         $sender_name = \Zotlabs\Lib\System::get_site_name();
     }
     $additional_mail_header = "";
     if (array_key_exists('item', $params)) {
         require_once 'include/conversation.php';
         // if it's a normal item...
         if (array_key_exists('verb', $params['item'])) {
             // localize_item() alters the original item so make a copy first
             $i = $params['item'];
             logger('calling localize');
             localize_item($i);
             $title = $i['title'];
             $body = $i['body'];
             $private = $i['item_private'] || intval($i['item_obscured']);
         } else {
             $title = $params['item']['title'];
             $body = $params['item']['body'];
         }
     } else {
         $title = $body = '';
     }
     // e.g. "your post", "David's photo", etc.
     $possess_desc = t('%s <!item_type!>');
     if ($params['type'] == NOTIFY_MAIL) {
         logger('notification: mail');
         $subject = sprintf(t('[$Projectname:Notify] New mail received at %s'), $sitename);
         $preamble = sprintf(t('%1$s, %2$s sent you a new private message at %3$s.'), $recip['channel_name'], $sender['xchan_name'], $sitename);
         $epreamble = sprintf(t('%1$s sent you %2$s.'), '[zrl=' . $sender['xchan_url'] . ']' . $sender['xchan_name'] . '[/zrl]', '[zrl=$itemlink]' . t('a private message') . '[/zrl]');
         $sitelink = t('Please visit %s to view and/or reply to your private messages.');
         $tsitelink = sprintf($sitelink, $siteurl . '/mail/' . $params['item']['id']);
         $hsitelink = sprintf($sitelink, '<a href="' . $siteurl . '/mail/' . $params['item']['id'] . '">' . $sitename . '</a>');
         $itemlink = $siteurl . '/mail/' . $params['item']['id'];
     }
     if ($params['type'] == NOTIFY_COMMENT) {
         //		logger("notification: params = " . print_r($params, true), LOGGER_DEBUG);
         $itemlink = $params['link'];
         // ignore like/unlike activity on posts - they probably require a separate notification preference
         if (array_key_exists('item', $params) && !visible_activity($params['item'])) {
             logger('notification: not a visible activity. Ignoring.');
             pop_lang();
//.........这里部分代码省略.........

 private function count_unseen_descendants()
 {
     $children = $this->get_children();
     $total = count($children);
     if ($total > 0) {
         $total = 0;
         foreach ($children as $child) {
             if (!visible_activity($child->data) || array_key_exists('author_blocked', $child->data)) {
                 continue;
             }
             if (intval($child->data['item_unseen'])) {
                 $total++;
             }
         }
     }
     return $total;
 }

//.........这里部分代码省略.........
                 }
                 $normalised = normalise_link(strlen($item['author-link']) ? $item['author-link'] : $item['url']);
                 if ($normalised != 'mailbox' && x($a->contacts[$normalised])) {
                     $profile_avatar = $a->contacts[$normalised]['thumb'];
                 } else {
                     $profile_avatar = strlen($item['author-avatar']) ? $a->get_cached_avatar_image($item['author-avatar']) : $item['thumb'];
                 }
                 $locate = array('location' => $item['location'], 'coord' => $item['coord'], 'html' => '');
                 call_hooks('render_location', $locate);
                 $location = strlen($locate['html']) ? $locate['html'] : render_location_google($locate);
                 localize_item($item);
                 if ($mode === 'network-new') {
                     $dropping = true;
                 } else {
                     $dropping = false;
                 }
                 $drop = array('dropping' => $dropping, 'pagedrop' => $page_dropping, 'select' => t('Select'), 'delete' => t('Delete'));
                 $star = false;
                 $isstarred = "unstarred";
                 $lock = false;
                 $likebuttons = false;
                 $shareable = false;
                 $body = prepare_body($item, true, $preview);
                 list($categories, $folders) = get_cats_and_terms($item);
                 if ($a->theme['template_engine'] === 'internal') {
                     $profile_name_e = template_escape($profile_name);
                     $item['title_e'] = template_escape($item['title']);
                     $body_e = template_escape($body);
                     $tags_e = template_escape($tags);
                     $hashtags_e = template_escape($hashtags);
                     $mentions_e = template_escape($mentions);
                     $location_e = template_escape($location);
                     $owner_name_e = template_escape($owner_name);
                 } else {
                     $profile_name_e = $profile_name;
                     $item['title_e'] = $item['title'];
                     $body_e = $body;
                     $tags_e = $tags;
                     $hashtags_e = $hashtags;
                     $mentions_e = $mentions;
                     $location_e = $location;
                     $owner_name_e = $owner_name;
                 }
                 $tmp_item = array('template' => $tpl, 'id' => $preview ? 'P0' : $item['item_id'], 'network' => $item['item_network'], 'linktitle' => sprintf(t('View %s\'s profile @ %s'), $profile_name, strlen($item['author-link']) ? $item['author-link'] : $item['url']), 'profile_url' => $profile_link, 'item_photo_menu' => item_photo_menu($item), 'name' => $profile_name_e, 'sparkle' => $sparkle, 'lock' => $lock, 'thumb' => proxy_url($profile_avatar), 'title' => $item['title_e'], 'body' => $body_e, 'tags' => $tags_e, 'hashtags' => $hashtags_e, 'mentions' => $mentions_e, 'txt_cats' => t('Categories:'), 'txt_folders' => t('Filed under:'), 'has_cats' => count($categories) ? 'true' : '', 'has_folders' => count($folders) ? 'true' : '', 'categories' => $categories, 'folders' => $folders, 'text' => strip_tags($body_e), 'localtime' => datetime_convert('UTC', date_default_timezone_get(), $item['created'], 'r'), 'ago' => $item['app'] ? sprintf(t('%s from %s'), relative_date($item['created']), $item['app']) : relative_date($item['created']), 'location' => $location_e, 'indent' => '', 'owner_name' => $owner_name_e, 'owner_url' => $owner_url, 'owner_photo' => proxy_url($owner_photo), 'plink' => get_plink($item), 'edpost' => false, 'isstarred' => $isstarred, 'star' => $star, 'drop' => $drop, 'vote' => $likebuttons, 'like' => '', 'dislike' => '', 'comment' => '', 'conv' => $preview ? '' : array('href' => $a->get_baseurl($ssl_state) . '/display/' . $item['guid'], 'title' => t('View in context')), 'previewing' => $previewing, 'wait' => t('Please wait'), 'thread_level' => 1);
                 $arr = array('item' => $item, 'output' => $tmp_item);
                 call_hooks('display_item', $arr);
                 $threads[$threadsid]['id'] = $item['item_id'];
                 $threads[$threadsid]['network'] = $item['item_network'];
                 $threads[$threadsid]['items'] = array($arr['output']);
             }
         } else {
             // Normal View
             $page_template = get_markup_template("threaded_conversation.tpl");
             require_once 'object/Conversation.php';
             require_once 'object/Item.php';
             $conv = new Conversation($mode, $preview);
             // get all the topmost parents
             // this shouldn't be needed, as we should have only them in our array
             // But for now, this array respects the old style, just in case
             $threads = array();
             foreach ($items as $item) {
                 if ($arr_blocked) {
                     $blocked = false;
                     foreach ($arr_blocked as $b) {
                         if ($b && link_compare($item['author-link'], $b)) {
                             $blocked = true;
                             break;
                         }
                     }
                     if ($blocked) {
                         continue;
                     }
                 }
                 // Can we put this after the visibility check?
                 like_puller($a, $item, $alike, 'like');
                 like_puller($a, $item, $dlike, 'dislike');
                 // Only add what is visible
                 if ($item['network'] === NETWORK_MAIL && local_user() != $item['uid']) {
                     continue;
                 }
                 if (!visible_activity($item)) {
                     continue;
                 }
                 call_hooks('display_item', $arr);
                 $item['pagedrop'] = $page_dropping;
                 if ($item['id'] == $item['parent']) {
                     $item_object = new Item($item);
                     $conv->add_thread($item_object);
                 }
             }
             $threads = $conv->get_template_data($alike, $dlike);
             if (!$threads) {
                 logger('[ERROR] conversation : Failed to get template data.', LOGGER_DEBUG);
                 $threads = array();
             }
         }
     }
     $o = replace_macros($page_template, array('$baseurl' => $a->get_baseurl($ssl_state), '$return_path' => $a->query_string, '$live_update' => $live_update_div, '$remove' => t('remove'), '$mode' => $mode, '$user' => $a->user, '$threads' => $threads, '$dropping' => $page_dropping && feature_enabled(local_user(), 'multi_delete') ? t('Delete Selected Items') : False));
     return $o;
 }

//.........这里部分代码省略.........
                    $dropping = false;
                }
                $drop = array('pagedropping' => $page_dropping, 'dropping' => $dropping, 'select' => t('Select'), 'delete' => t('Delete'));
                $star = false;
                $isstarred = "unstarred icon-star-empty";
                $lock = $item['item_private'] || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']) ? t('Private Message') : false;
                $likebuttons = false;
                $shareable = false;
                $verified = $item['item_flags'] & ITEM_VERIFIED ? t('Message signature validated') : '';
                $forged = $item['sig'] && !($item['item_flags'] & ITEM_VERIFIED) ? t('Message signature incorrect') : '';
                $unverified = '';
                $tags = array();
                $terms = get_terms_oftype($item['term'], array(TERM_HASHTAG, TERM_MENTION, TERM_UNKNOWN));
                if (count($terms)) {
                    foreach ($terms as $tag) {
                        $tags[] = format_term_for_display($tag);
                    }
                }
                $body = prepare_body($item, true);
                $tmp_item = array('template' => $tpl, 'toplevel' => 'toplevel_item', 'mode' => $mode, 'id' => $preview ? 'P0' : $item['item_id'], 'linktitle' => sprintf(t('View %s\'s profile @ %s'), $profile_name, $profile_url), 'profile_url' => $profile_link, 'item_photo_menu' => item_photo_menu($item), 'name' => $profile_name, 'sparkle' => $sparkle, 'lock' => $lock, 'thumb' => $profile_avatar, 'title' => $item['title'], 'body' => $body, 'tags' => $tags, 'hashtags' => $hashtags, 'mentions' => $mentions, 'verified' => $verified, 'unverified' => $unverified, 'forged' => $forged, 'txt_cats' => t('Categories:'), 'txt_folders' => t('Filed under:'), 'has_cats' => count($categories) ? 'true' : '', 'has_folders' => count($folders) ? 'true' : '', 'categories' => $categories, 'folders' => $folders, 'text' => strip_tags($body), 'ago' => relative_date($item['created']), 'app' => $item['app'], 'str_app' => sprintf(t(' from %s'), $item['app']), 'isotime' => datetime_convert('UTC', date_default_timezone_get(), $item['created'], 'c'), 'localtime' => datetime_convert('UTC', date_default_timezone_get(), $item['created'], 'r'), 'editedtime' => $item['edited'] != $item['created'] ? sprintf(t('last edited: %s'), datetime_convert('UTC', date_default_timezone_get(), $item['edited'], 'r')) : '', 'expiretime' => $item['expires'] !== NULL_DATE ? sprintf(t('Expires: %s'), datetime_convert('UTC', date_default_timezone_get(), $item['expires'], 'r')) : '', 'location' => $location, 'indent' => '', 'owner_name' => $owner_name, 'owner_url' => $owner_url, 'owner_photo' => $owner_photo, 'plink' => get_plink($item, false), 'edpost' => false, 'isstarred' => $isstarred, 'star' => $star, 'drop' => $drop, 'vote' => $likebuttons, 'like' => '', 'dislike' => '', 'comment' => '', 'conv' => $preview ? '' : array('href' => z_root() . '/display/' . $item['mid'], 'title' => t('View in context')), 'previewing' => $previewing, 'wait' => t('Please wait'), 'thread_level' => 1);
                $arr = array('item' => $item, 'output' => $tmp_item);
                call_hooks('display_item', $arr);
                //				$threads[$threadsid]['id'] = $item['item_id'];
                $threads[] = $arr['output'];
            }
        } else {
            // Normal View
            //			logger('conv: items: ' . print_r($items,true));
            require_once 'include/ConversationObject.php';
            require_once 'include/ItemObject.php';
            $conv = new Conversation($mode, $preview, $prepared_item);
            // In the display mode we don't have a profile owner.
            if ($mode === 'display' && $items) {
                $conv->set_profile_owner($items[0]['uid']);
            }
            // get all the topmost parents
            // this shouldn't be needed, as we should have only them in our array
            // But for now, this array respects the old style, just in case
            $threads = array();
            foreach ($items as $item) {
                // Check for any blocked authors
                if ($arr_blocked) {
                    $blocked = false;
                    foreach ($arr_blocked as $b) {
                        if ($b && $item['author_xchan'] == $b) {
                            $blocked = true;
                            break;
                        }
                    }
                    if ($blocked) {
                        continue;
                    }
                }
                // Check all the kids too
                if ($arr_blocked && $item['children']) {
                    for ($d = 0; $d < count($item['children']); $d++) {
                        foreach ($arr_blocked as $b) {
                            if ($b && $item['children'][$d]['author_xchan'] == $b) {
                                $item['children'][$d]['author_blocked'] = true;
                            }
                        }
                    }
                }
                builtin_activity_puller($item, $conv_responses);
                if (!visible_activity($item)) {
                    continue;
                }
                $item['pagedrop'] = $page_dropping;
                if ($item['id'] == $item['parent']) {
                    $item_object = new Item($item);
                    $conv->add_thread($item_object);
                    if ($page_mode === 'list') {
                        $item_object->set_template('conv_list.tpl');
                        $item_object->set_display_mode('list');
                    }
                }
            }
            $threads = $conv->get_template_data($conv_responses);
            if (!$threads) {
                logger('[ERROR] conversation : Failed to get template data.', LOGGER_DEBUG);
                $threads = array();
            }
        }
    }
    if ($page_mode === 'traditional' || $page_mode === 'preview') {
        $page_template = get_markup_template("threaded_conversation.tpl");
    } elseif ($update) {
        $page_template = get_markup_template("convobj.tpl");
    } else {
        $page_template = get_markup_template("conv_frame.tpl");
        $threads = null;
    }
    //	if($page_mode === 'preview')
    //		logger('preview: ' . print_r($threads,true));
    //  Do not un-comment if smarty3 is in use
    //	logger('page_template: ' . $page_template);
    //	logger('nouveau: ' . print_r($threads,true));
    $o .= replace_macros($page_template, array('$baseurl' => $a->get_baseurl($ssl_state), '$photo_item' => $content_html, '$live_update' => $live_update_div, '$remove' => t('remove'), '$mode' => $mode, '$user' => $a->user, '$threads' => $threads, '$wait' => t('Loading...'), '$dropping' => $page_dropping ? t('Delete Selected Items') : False));
    return $o;
}