+class PublicAction extends Action
+{
+ /**
+ * page of the stream we're on; default = 1
+ */
+
+ var $page = null;
+
+ function isReadOnly($args)
+ {
+ return true;
+ }
+
+ /**
+ * Read and validate arguments
+ *
+ * @param array $args URL parameters
+ *
+ * @return boolean success value
+ */
+
+ function prepare($args)
+ {
+ parent::prepare($args);
+ $this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
+
+ common_set_returnto($this->selfUrl());
+
+ return true;
+ }
+
+ /**
+ * handle request
+ *
+ * Show the public stream, using recipe method showPage()
+ *
+ * @param array $args arguments, mostly unused
+ *
+ * @return void
+ */
+
+ function handle($args)
+ {
+ parent::handle($args);
+
+ header('X-XRDS-Location: '. common_local_url('publicxrds'));
+
+ $this->showPage();
+ }
+
+ /**
+ * Title of the page
+ *
+ * @return page title, including page number if over 1
+ */
+
+ function title()
+ {
+ if ($this->page > 1) {
+ return sprintf(_('Public timeline, page %d'), $this->page);
+ } else {
+ return _('Public timeline');
+ }
+ }
+
+ /**
+ * Output <head> elements for RSS and Atom feeds
+ *
+ * @return void
+ */
+
+ function getFeeds()
+ {
+ return array(new Feed(Feed::RSS1, common_local_url('publicrss'),
+ _('Public Stream Feed (RSS 1.0)')),
+ new Feed(Feed::RSS2,
+ common_local_url('api',
+ array('apiaction' => 'statuses',
+ 'method' => 'public_timeline.rss')),
+ _('Public Stream Feed (RSS 2.0)')),
+ new Feed(Feed::ATOM,
+ common_local_url('api',
+ array('apiaction' => 'statuses',
+ 'method' => 'public_timeline.atom')),
+ _('Public Stream Feed (Atom)')));
+ }
+
+ /**
+ * Output document relationship links
+ *
+ * @return void
+ */
+ function showRelationshipLinks()
+ {
+ $this->sequenceRelationships($this->page > 1, $this->count > NOTICES_PER_PAGE, // FIXME
+ $this->page, 'public');
+ }
+
+ /**
+ * Extra head elements
+ *
+ * We include a <meta> element linking to the publicxrds page, for OpenID
+ * client-side authentication.
+ *
+ * @return void
+ */
+
+ function extraHead()
+ {
+ // for client side of OpenID authentication
+ $this->element('meta', array('http-equiv' => 'X-XRDS-Location',
+ 'content' => common_local_url('publicxrds')));
+ }
+
+ /**
+ * Show tabset for this page
+ *
+ * Uses the PublicGroupNav widget
+ *
+ * @return void
+ * @see PublicGroupNav
+ */
+
+ function showLocalNav()
+ {
+ $nav = new PublicGroupNav($this);
+ $nav->show();
+ }
+
+ function showEmptyList()
+ {
+ $message = _('This is the public timeline for %%site.name%% but no one has posted anything yet.') . ' ';
+
+ if (common_logged_in()) {
+ $message .= _('Be the first to post!');
+ }
+ else {
+ $message .= _('Why not [register an account](%%action.register%%) and be the first to post!');
+ }
+
+ $this->elementStart('div', 'guide');
+ $this->raw(common_markup_to_html($message));
+ $this->elementEnd('div');
+ }
+
+ /**
+ * Fill the content area
+ *
+ * Shows a list of the notices in the public stream, with some pagination
+ * controls.
+ *
+ * @return void
+ */
+
+ function showContent()
+ {
+ $notice = Notice::publicStream(($this->page-1)*NOTICES_PER_PAGE,
+ NOTICES_PER_PAGE + 1);
+
+ if (!$notice) {
+ $this->serverError(_('Could not retrieve public stream.'));