3 * StatusNet, the distributed open-source microblogging tool
5 * Base class for all actions (~views)
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Evan Prodromou <evan@status.net>
25 * @author Sarven Capadisli <csarven@status.net>
26 * @copyright 2008 StatusNet, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
28 * @link http://status.net/
31 if (!defined('STATUSNET') && !defined('LACONICA')) {
35 require_once INSTALLDIR.'/lib/noticeform.php';
36 require_once INSTALLDIR.'/lib/htmloutputter.php';
39 * Base class for all actions
41 * This is the base class for all actions in the package. An action is
42 * more or less a "view" in an MVC framework.
44 * Actions are responsible for extracting and validating parameters; using
45 * model classes to read and write to the database; and doing ouput.
49 * @author Evan Prodromou <evan@status.net>
50 * @author Sarven Capadisli <csarven@status.net>
51 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
52 * @link http://status.net/
56 class Action extends HTMLOutputter // lawsuit
63 * Just wraps the HTMLOutputter constructor.
65 * @param string $output URI to output to, default = stdout
66 * @param boolean $indent Whether to indent output, default true
68 * @see XMLOutputter::__construct
69 * @see HTMLOutputter::__construct
71 function __construct($output='php://output', $indent=null)
73 parent::__construct($output, $indent);
77 * For initializing members of the class.
79 * @param array $argarray misc. arguments
81 * @return boolean true
83 function prepare($argarray)
85 $this->args =& common_copy_args($argarray);
90 * Show page, a template method.
96 if (Event::handle('StartShowHTML', array($this))) {
98 Event::handle('EndShowHTML', array($this));
100 if (Event::handle('StartShowHead', array($this))) {
102 Event::handle('EndShowHead', array($this));
104 if (Event::handle('StartShowBody', array($this))) {
106 Event::handle('EndShowBody', array($this));
108 if (Event::handle('StartEndHTML', array($this))) {
110 Event::handle('EndEndHTML', array($this));
115 * Show head, a template method.
121 // XXX: attributes (profile?)
122 $this->elementStart('head');
123 if (Event::handle('StartShowHeadElements', array($this))) {
124 if (Event::handle('StartShowHeadTitle', array($this))) {
126 Event::handle('EndShowHeadTitle', array($this));
128 $this->showShortcutIcon();
129 $this->showStylesheets();
130 $this->showOpenSearch();
132 $this->showDescription();
134 Event::handle('EndShowHeadElements', array($this));
136 $this->elementEnd('head');
140 * Show title, a template method.
146 $this->element('title', null,
147 // TRANS: Page title. %1$s is the title, %2$s is the site name.
148 sprintf(_("%1\$s - %2\$s"),
150 common_config('site', 'name')));
154 * Returns the page title
158 * @return string page title
163 // TRANS: Page title for a page without a title set.
164 return _("Untitled page");
168 * Show themed shortcut icon
172 function showShortcutIcon()
174 if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/favicon.ico')) {
175 $this->element('link', array('rel' => 'shortcut icon',
176 'href' => Theme::path('favicon.ico')));
178 // favicon.ico should be HTTPS if the rest of the page is
179 $this->element('link', array('rel' => 'shortcut icon',
180 'href' => common_path('favicon.ico', StatusNet::isHTTPS())));
183 if (common_config('site', 'mobile')) {
184 if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/apple-touch-icon.png')) {
185 $this->element('link', array('rel' => 'apple-touch-icon',
186 'href' => Theme::path('apple-touch-icon.png')));
188 $this->element('link', array('rel' => 'apple-touch-icon',
189 'href' => common_path('apple-touch-icon.png')));
199 function showStylesheets()
201 if (Event::handle('StartShowStyles', array($this))) {
203 // Use old name for StatusNet for compatibility on events
205 if (Event::handle('StartShowStatusNetStyles', array($this)) &&
206 Event::handle('StartShowLaconicaStyles', array($this))) {
207 $this->primaryCssLink(null, 'screen, projection, tv, print');
208 Event::handle('EndShowStatusNetStyles', array($this));
209 Event::handle('EndShowLaconicaStyles', array($this));
212 if (Event::handle('StartShowUAStyles', array($this))) {
213 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
214 'href="'.Theme::path('css/ie.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
215 foreach (array(6,7) as $ver) {
216 if (file_exists(Theme::file('css/ie'.$ver.'.css', 'base'))) {
217 // Yes, IE people should be put in jail.
218 $this->comment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
219 'href="'.Theme::path('css/ie'.$ver.'.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
222 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
223 'href="'.Theme::path('css/ie.css', null).'?version='.STATUSNET_VERSION.'" /><![endif]');
224 Event::handle('EndShowUAStyles', array($this));
227 if (Event::handle('StartShowDesign', array($this))) {
229 $user = common_current_user();
231 if (empty($user) || $user->viewdesigns) {
232 $design = $this->getDesign();
234 if (!empty($design)) {
235 $design->showCSS($this);
239 Event::handle('EndShowDesign', array($this));
241 Event::handle('EndShowStyles', array($this));
243 if (common_config('custom_css', 'enabled')) {
244 $css = common_config('custom_css', 'css');
245 if (Event::handle('StartShowCustomCss', array($this, &$css))) {
246 if (trim($css) != '') {
249 Event::handle('EndShowCustomCss', array($this));
255 function primaryCssLink($mainTheme=null, $media=null)
257 // If the currently-selected theme has dependencies on other themes,
258 // we'll need to load their display.css files as well in order.
259 $theme = new Theme($mainTheme);
260 $baseThemes = $theme->getDeps();
261 foreach ($baseThemes as $baseTheme) {
262 $this->cssLink('css/display.css', $baseTheme, $media);
264 $this->cssLink('css/display.css', $mainTheme, $media);
268 * Show javascript headers
272 function showScripts()
274 if (Event::handle('StartShowScripts', array($this))) {
275 if (Event::handle('StartShowJQueryScripts', array($this))) {
276 $this->script('jquery.min.js');
277 $this->script('jquery.form.min.js');
278 $this->script('jquery.cookie.min.js');
279 $this->inlineScript('if (typeof window.JSON !== "object") { $.getScript("'.common_path('js/json2.min.js').'"); }');
280 $this->script('jquery.joverlay.min.js');
281 Event::handle('EndShowJQueryScripts', array($this));
283 if (Event::handle('StartShowStatusNetScripts', array($this)) &&
284 Event::handle('StartShowLaconicaScripts', array($this))) {
285 $this->script('util.min.js');
286 $this->showScriptMessages();
287 // Frame-busting code to avoid clickjacking attacks.
288 $this->inlineScript('if (window.top !== window.self) { window.top.location.href = window.self.location.href; }');
289 Event::handle('EndShowStatusNetScripts', array($this));
290 Event::handle('EndShowLaconicaScripts', array($this));
292 Event::handle('EndShowScripts', array($this));
297 * Exports a map of localized text strings to JavaScript code.
299 * Plugins can add to what's exported by hooking the StartScriptMessages or EndScriptMessages
300 * events and appending to the array. Try to avoid adding strings that won't be used, as
301 * they'll be added to HTML output.
304 function showScriptMessages()
308 if (Event::handle('StartScriptMessages', array($this, &$messages))) {
309 // Common messages needed for timeline views etc...
311 // TRANS: Localized tooltip for '...' expansion button on overlong remote messages.
312 $messages['showmore_tooltip'] = _m('TOOLTIP', 'Show more');
314 $messages = array_merge($messages, $this->getScriptMessages());
316 Event::handle('EndScriptMessages', array($this, &$messages));
319 if (!empty($messages)) {
320 $this->inlineScript('SN.messages=' . json_encode($messages));
327 * If the action will need localizable text strings, export them here like so:
329 * return array('pool_deepend' => _('Deep end'),
330 * 'pool_shallow' => _('Shallow end'));
332 * The exported map will be available via SN.msg() to JS code:
334 * $('#pool').html('<div class="deepend"></div><div class="shallow"></div>');
335 * $('#pool .deepend').text(SN.msg('pool_deepend'));
336 * $('#pool .shallow').text(SN.msg('pool_shallow'));
338 * Exports a map of localized text strings to JavaScript code.
340 * Plugins can add to what's exported on any action by hooking the StartScriptMessages or
341 * EndScriptMessages events and appending to the array. Try to avoid adding strings that won't
342 * be used, as they'll be added to HTML output.
344 function getScriptMessages()
350 * Show OpenSearch headers
354 function showOpenSearch()
356 $this->element('link', array('rel' => 'search',
357 'type' => 'application/opensearchdescription+xml',
358 'href' => common_local_url('opensearch', array('type' => 'people')),
359 'title' => common_config('site', 'name').' People Search'));
360 $this->element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
361 'href' => common_local_url('opensearch', array('type' => 'notice')),
362 'title' => common_config('site', 'name').' Notice Search'));
374 $feeds = $this->getFeeds();
377 foreach ($feeds as $feed) {
378 $this->element('link', array('rel' => $feed->rel(),
379 'href' => $feed->url,
380 'type' => $feed->mimeType(),
381 'title' => $feed->title));
393 function showDescription()
395 // does nothing by default
399 * Show extra stuff in <head>.
407 // does nothing by default
413 * Calls template methods
419 $this->elementStart('body', (common_current_user()) ? array('id' => strtolower($this->trimmed('action')),
420 'class' => 'user_in')
421 : array('id' => strtolower($this->trimmed('action'))));
422 $this->elementStart('div', array('id' => 'wrap'));
423 if (Event::handle('StartShowHeader', array($this))) {
425 Event::handle('EndShowHeader', array($this));
428 if (Event::handle('StartShowFooter', array($this))) {
430 Event::handle('EndShowFooter', array($this));
432 $this->elementEnd('div');
433 $this->showScripts();
434 $this->elementEnd('body');
438 * Show header of the page.
440 * Calls template methods
444 function showHeader()
446 $this->elementStart('div', array('id' => 'header'));
448 $this->showPrimaryNav();
449 if (Event::handle('StartShowSiteNotice', array($this))) {
450 $this->showSiteNotice();
452 Event::handle('EndShowSiteNotice', array($this));
454 if (common_logged_in()) {
455 if (Event::handle('StartShowNoticeForm', array($this))) {
456 $this->showNoticeForm();
457 Event::handle('EndShowNoticeForm', array($this));
460 $this->showAnonymousMessage();
462 $this->elementEnd('div');
466 * Show configured logo.
472 $this->elementStart('address', array('id' => 'site_contact',
473 'class' => 'vcard'));
474 if (Event::handle('StartAddressData', array($this))) {
475 if (common_config('singleuser', 'enabled')) {
476 $user = User::singleUser();
477 $url = common_local_url('showstream',
478 array('nickname' => $user->nickname));
479 } else if (common_logged_in()) {
480 $cur = common_current_user();
481 $url = common_local_url('all', array('nickname' => $cur->nickname));
483 $url = common_local_url('public');
486 $this->elementStart('a', array('class' => 'url home bookmark',
489 if (StatusNet::isHTTPS()) {
490 $logoUrl = common_config('site', 'ssllogo');
491 if (empty($logoUrl)) {
492 // if logo is an uploaded file, try to fall back to HTTPS file URL
493 $httpUrl = common_config('site', 'logo');
494 if (!empty($httpUrl)) {
495 $f = File::staticGet('url', $httpUrl);
496 if (!empty($f) && !empty($f->filename)) {
497 // this will handle the HTTPS case
498 $logoUrl = File::url($f->filename);
503 $logoUrl = common_config('site', 'logo');
506 if (empty($logoUrl) && file_exists(Theme::file('logo.png'))) {
507 // This should handle the HTTPS case internally
508 $logoUrl = Theme::path('logo.png');
511 if (!empty($logoUrl)) {
512 $this->element('img', array('class' => 'logo photo',
514 'alt' => common_config('site', 'name')));
518 $this->element('span', array('class' => 'fn org'), common_config('site', 'name'));
519 $this->elementEnd('a');
521 Event::handle('EndAddressData', array($this));
523 $this->elementEnd('address');
527 * Show primary navigation.
531 function showPrimaryNav()
533 $user = common_current_user();
534 $this->elementStart('ul', array('class' => 'nav',
535 'id' => 'site_nav_global_primary'));
536 if (Event::handle('StartPrimaryNav', array($this))) {
538 $this->menuItem(common_local_url('all',
539 array('nickname' => $user->nickname)),
541 _m('Friends timeline'),
544 $this->menuItem(common_local_url('showstream',
545 array('nickname' => $user->nickname)),
550 $this->menuItem(common_local_url('public'),
552 _m('Everyone on this site'),
555 $this->menuItem(common_local_url('profilesettings'),
557 _m('Change your personal settings'),
560 if ($user->hasRight(Right::CONFIGURESITE)) {
561 $this->menuItem(common_local_url('siteadminpanel'),
563 _m('Site configuration'),
567 $this->menuItem(common_local_url('logout'),
569 _m('Logout from the site'),
573 $this->menuItem(common_local_url('public'),
575 _m('Everyone on this site'),
578 $this->menuItem(common_local_url('login'),
580 _m('Login to the site'),
585 if (!empty($user) || !common_config('site', 'private')) {
586 $this->menuItem(common_local_url('noticesearch'),
588 _m('Search the site'),
593 Event::handle('EndPrimaryNav', array($this));
595 $this->elementEnd('ul');
603 function showSiteNotice()
605 // Revist. Should probably do an hAtom pattern here
606 $text = common_config('site', 'notice');
608 $this->elementStart('div', array('id' => 'site_notice',
609 'class' => 'system_notice'));
611 $this->elementEnd('div');
618 * MAY overload if no notice form needed... or direct message box????
622 function showNoticeForm()
624 $notice_form = new NoticeForm($this);
625 $notice_form->show();
629 * Show anonymous message.
635 function showAnonymousMessage()
637 // needs to be defined by the class
643 * Shows local navigation, content block and aside.
649 $this->elementStart('div', array('id' => 'core'));
650 if (Event::handle('StartShowLocalNavBlock', array($this))) {
651 $this->showLocalNavBlock();
652 Event::handle('EndShowLocalNavBlock', array($this));
654 if (Event::handle('StartShowContentBlock', array($this))) {
655 $this->showContentBlock();
656 Event::handle('EndShowContentBlock', array($this));
658 if (Event::handle('StartShowAside', array($this))) {
660 Event::handle('EndShowAside', array($this));
662 $this->elementEnd('div');
666 * Show local navigation block.
670 function showLocalNavBlock()
672 // Need to have this ID for CSS; I'm too lazy to add it to
674 $this->elementStart('div', array('id' => 'site_nav_local_views'));
675 $this->showLocalNav();
676 $this->elementEnd('div');
680 * Show local navigation.
686 function showLocalNav()
688 // does nothing by default
692 * Show content block.
696 function showContentBlock()
698 $this->elementStart('div', array('id' => 'content'));
699 if (Event::handle('StartShowPageTitle', array($this))) {
700 $this->showPageTitle();
701 Event::handle('EndShowPageTitle', array($this));
703 $this->showPageNoticeBlock();
704 $this->elementStart('div', array('id' => 'content_inner'));
705 // show the actual content (forms, lists, whatever)
706 $this->showContent();
707 $this->elementEnd('div');
708 $this->elementEnd('div');
716 function showPageTitle()
718 $this->element('h1', null, $this->title());
722 * Show page notice block.
724 * Only show the block if a subclassed action has overrided
725 * Action::showPageNotice(), or an event handler is registered for
726 * the StartShowPageNotice event, in which case we assume the
727 * 'page_notice' definition list is desired. This is to prevent
728 * empty 'page_notice' definition lists from being output everywhere.
732 function showPageNoticeBlock()
734 $rmethod = new ReflectionMethod($this, 'showPageNotice');
735 $dclass = $rmethod->getDeclaringClass()->getName();
737 if ($dclass != 'Action' || Event::hasHandler('StartShowPageNotice')) {
739 $this->elementStart('div', array('id' => 'page_notice',
740 'class' => 'system_notice'));
741 if (Event::handle('StartShowPageNotice', array($this))) {
742 $this->showPageNotice();
743 Event::handle('EndShowPageNotice', array($this));
745 $this->elementEnd('div');
752 * SHOULD overload (unless there's not a notice)
756 function showPageNotice()
763 * MUST overload (unless there's not a notice)
767 function showContent()
778 $this->elementStart('div', array('id' => 'aside_primary',
779 'class' => 'aside'));
780 if (Event::handle('StartShowSections', array($this))) {
781 $this->showSections();
782 Event::handle('EndShowSections', array($this));
784 if (Event::handle('StartShowExportData', array($this))) {
785 $this->showExportData();
786 Event::handle('EndShowExportData', array($this));
788 $this->elementEnd('div');
792 * Show export data feeds.
796 function showExportData()
798 $feeds = $this->getFeeds();
800 $fl = new FeedList($this);
812 function showSections()
814 // for each section, show it
822 function showFooter()
824 $this->elementStart('div', array('id' => 'footer'));
825 $this->showSecondaryNav();
826 $this->showLicenses();
827 $this->elementEnd('div');
831 * Show secondary navigation.
835 function showSecondaryNav()
837 $this->elementStart('ul', array('class' => 'nav',
838 'id' => 'site_nav_global_secondary'));
839 if (Event::handle('StartSecondaryNav', array($this))) {
840 $this->menuItem(common_local_url('doc', array('title' => 'help')),
841 // TRANS: Secondary navigation menu option leading to help on StatusNet.
843 $this->menuItem(common_local_url('doc', array('title' => 'about')),
844 // TRANS: Secondary navigation menu option leading to text about StatusNet site.
846 $this->menuItem(common_local_url('doc', array('title' => 'faq')),
847 // TRANS: Secondary navigation menu option leading to Frequently Asked Questions.
849 $bb = common_config('site', 'broughtby');
851 $this->menuItem(common_local_url('doc', array('title' => 'tos')),
852 // TRANS: Secondary navigation menu option leading to Terms of Service.
855 $this->menuItem(common_local_url('doc', array('title' => 'privacy')),
856 // TRANS: Secondary navigation menu option leading to privacy policy.
858 $this->menuItem(common_local_url('doc', array('title' => 'source')),
859 // TRANS: Secondary navigation menu option. Leads to information about StatusNet and its license.
861 $this->menuItem(common_local_url('version'),
862 // TRANS: Secondary navigation menu option leading to version information on the StatusNet site.
864 $this->menuItem(common_local_url('doc', array('title' => 'contact')),
865 // TRANS: Secondary navigation menu option leading to e-mail contact information on the
866 // TRANS: StatusNet site, where to report bugs, ...
868 $this->menuItem(common_local_url('doc', array('title' => 'badge')),
869 // TRANS: Secondary navigation menu option. Leads to information about embedding a timeline widget.
871 Event::handle('EndSecondaryNav', array($this));
873 $this->elementEnd('ul');
881 function showLicenses()
883 $this->showStatusNetLicense();
884 $this->showContentLicense();
888 * Show StatusNet license.
892 function showStatusNetLicense()
894 if (common_config('site', 'broughtby')) {
895 // TRANS: First sentence of the StatusNet site license. Used if 'broughtby' is set.
896 // TRANS: Text between [] is a link description, text between () is the link itself.
897 // TRANS: Make sure there is no whitespace between "]" and "(".
898 // TRANS: "%%site.broughtby%%" is the value of the variable site.broughtby
899 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%).');
901 // TRANS: First sentence of the StatusNet site license. Used if 'broughtby' is not set.
902 $instr = _('**%%site.name%%** is a microblogging service.');
905 // TRANS: Second sentence of the StatusNet site license. Mentions the StatusNet source code license.
906 // TRANS: Make sure there is no whitespace between "]" and "(".
907 // TRANS: Text between [] is a link description, text between () is the link itself.
908 // TRANS: %s is the version of StatusNet that is being used.
909 $instr .= sprintf(_('It runs the [StatusNet](http://status.net/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), STATUSNET_VERSION);
910 $output = common_markup_to_html($instr);
916 * Show content license.
920 function showContentLicense()
922 if (Event::handle('StartShowContentLicense', array($this))) {
923 switch (common_config('license', 'type')) {
925 // TRANS: Content license displayed when license is set to 'private'.
926 // TRANS: %1$s is the site name.
927 $this->element('p', null, sprintf(_('Content and data of %1$s are private and confidential.'),
928 common_config('site', 'name')));
930 case 'allrightsreserved':
931 if (common_config('license', 'owner')) {
932 // TRANS: Content license displayed when license is set to 'allrightsreserved'.
933 // TRANS: %1$s is the copyright owner.
934 $this->element('p', null, sprintf(_('Content and data copyright by %1$s. All rights reserved.'),
935 common_config('license', 'owner')));
937 // TRANS: Content license displayed when license is set to 'allrightsreserved' and no owner is set.
938 $this->element('p', null, _('Content and data copyright by contributors. All rights reserved.'));
941 case 'cc': // fall through
943 $this->elementStart('p');
945 $image = common_config('license', 'image');
946 $sslimage = common_config('license', 'sslimage');
948 if (StatusNet::isHTTPS()) {
949 if (!empty($sslimage)) {
951 } else if (preg_match('#^http://i.creativecommons.org/#', $image)) {
952 // CC support HTTPS on their images
953 $url = preg_replace('/^http/', 'https', $image);
955 // Better to show mixed content than no content
962 $this->element('img', array('id' => 'license_cc',
964 'alt' => common_config('license', 'title'),
968 // TRANS: license message in footer.
969 // TRANS: %1$s is the site name, %2$s is a link to the license URL, with a licence name set in configuration.
970 $notice = _('All %1$s content and data are available under the %2$s license.');
971 $link = "<a class=\"license\" rel=\"external license\" href=\"" .
972 htmlspecialchars(common_config('license', 'url')) .
974 htmlspecialchars(common_config('license', 'title')) .
976 $this->raw(sprintf(htmlspecialchars($notice),
977 htmlspecialchars(common_config('site', 'name')),
979 $this->elementEnd('p');
983 Event::handle('EndShowContentLicense', array($this));
988 * Return last modified, if applicable.
992 * @return string last modified http header
994 function lastModified()
996 // For comparison with If-Last-Modified
997 // If not applicable, return null
1002 * Return etag, if applicable.
1006 * @return string etag http header
1014 * Return true if read only.
1018 * @param array $args other arguments
1020 * @return boolean is read only action?
1022 function isReadOnly($args)
1028 * Returns query argument or default value if not found
1030 * @param string $key requested argument
1031 * @param string $def default value to return if $key is not provided
1033 * @return boolean is read only action?
1035 function arg($key, $def=null)
1037 if (array_key_exists($key, $this->args)) {
1038 return $this->args[$key];
1045 * Returns trimmed query argument or default value if not found
1047 * @param string $key requested argument
1048 * @param string $def default value to return if $key is not provided
1050 * @return boolean is read only action?
1052 function trimmed($key, $def=null)
1054 $arg = $this->arg($key, $def);
1055 return is_string($arg) ? trim($arg) : $arg;
1061 * @param array $argarray is ignored since it's now passed in in prepare()
1063 * @return boolean is read only action?
1065 function handle($argarray=null)
1067 header('Vary: Accept-Encoding,Cookie');
1069 $lm = $this->lastModified();
1070 $etag = $this->etag();
1073 header('ETag: ' . $etag);
1077 header('Last-Modified: ' . date(DATE_RFC1123, $lm));
1078 if ($this->isCacheable()) {
1079 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1080 header( "Cache-Control: private, must-revalidate, max-age=0" );
1087 $if_none_match = (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER)) ?
1088 $_SERVER['HTTP_IF_NONE_MATCH'] : null;
1089 if ($if_none_match) {
1090 // If this check fails, ignore the if-modified-since below.
1092 if ($this->_hasEtag($etag, $if_none_match)) {
1093 header('HTTP/1.1 304 Not Modified');
1094 // Better way to do this?
1100 if (!$checked && $lm && array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER)) {
1101 $if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
1102 $ims = strtotime($if_modified_since);
1104 header('HTTP/1.1 304 Not Modified');
1105 // Better way to do this?
1112 * Is this action cacheable?
1114 * If the action returns a last-modified
1116 * @param array $argarray is ignored since it's now passed in in prepare()
1118 * @return boolean is read only action?
1120 function isCacheable()
1126 * HasĀ etag? (private)
1128 * @param string $etag etag http header
1129 * @param string $if_none_match ifNoneMatch http header
1133 function _hasEtag($etag, $if_none_match)
1135 $etags = explode(',', $if_none_match);
1136 return in_array($etag, $etags) || in_array('*', $etags);
1140 * Boolean understands english (yes, no, true, false)
1142 * @param string $key query key we're interested in
1143 * @param string $def default value
1145 * @return boolean interprets yes/no strings as boolean
1147 function boolean($key, $def=false)
1149 $arg = strtolower($this->trimmed($key));
1151 if (is_null($arg)) {
1153 } else if (in_array($arg, array('true', 'yes', '1', 'on'))) {
1155 } else if (in_array($arg, array('false', 'no', '0'))) {
1163 * Integer value of an argument
1165 * @param string $key query key we're interested in
1166 * @param string $defValue optional default value (default null)
1167 * @param string $maxValue optional max value (default null)
1168 * @param string $minValue optional min value (default null)
1170 * @return integer integer value
1172 function int($key, $defValue=null, $maxValue=null, $minValue=null)
1174 $arg = strtolower($this->trimmed($key));
1176 if (is_null($arg) || !is_integer($arg)) {
1180 if (!is_null($maxValue)) {
1181 $arg = min($arg, $maxValue);
1184 if (!is_null($minValue)) {
1185 $arg = max($arg, $minValue);
1194 * @param string $msg error message to display
1195 * @param integer $code http error code, 500 by default
1199 function serverError($msg, $code=500)
1201 $action = $this->trimmed('action');
1202 common_debug("Server error '$code' on '$action': $msg", __FILE__);
1203 throw new ServerException($msg, $code);
1209 * @param string $msg error message to display
1210 * @param integer $code http error code, 400 by default
1214 function clientError($msg, $code=400)
1216 $action = $this->trimmed('action');
1217 common_debug("User error '$code' on '$action': $msg", __FILE__);
1218 throw new ClientException($msg, $code);
1222 * Returns the current URL
1224 * @return string current URL
1228 list($action, $args) = $this->returnToArgs();
1229 return common_local_url($action, $args);
1233 * Returns arguments sufficient for re-constructing URL
1235 * @return array two elements: action, other args
1237 function returnToArgs()
1239 $action = $this->trimmed('action');
1240 $args = $this->args;
1241 unset($args['action']);
1242 if (common_config('site', 'fancy')) {
1245 if (array_key_exists('submit', $args)) {
1246 unset($args['submit']);
1248 foreach (array_keys($_COOKIE) as $cookie) {
1249 unset($args[$cookie]);
1251 return array($action, $args);
1255 * Generate a menu item
1257 * @param string $url menu URL
1258 * @param string $text menu name
1259 * @param string $title title attribute, null by default
1260 * @param boolean $is_selected current menu item, false by default
1261 * @param string $id element id, null by default
1265 function menuItem($url, $text, $title=null, $is_selected=false, $id=null)
1267 // Added @id to li for some control.
1268 // XXX: We might want to move this to htmloutputter.php
1271 $lattrs['class'] = 'current';
1274 (is_null($id)) ? $lattrs : $lattrs['id'] = $id;
1276 $this->elementStart('li', $lattrs);
1277 $attrs['href'] = $url;
1279 $attrs['title'] = $title;
1281 $this->element('a', $attrs, $text);
1282 $this->elementEnd('li');
1286 * Generate pagination links
1288 * @param boolean $have_before is there something before?
1289 * @param boolean $have_after is there something after?
1290 * @param integer $page current page
1291 * @param string $action current action
1292 * @param array $args rest of query arguments
1296 // XXX: The messages in this pagination method only tailor to navigating
1297 // notices. In other lists, "Previous"/"Next" type navigation is
1298 // desirable, but not available.
1299 function pagination($have_before, $have_after, $page, $action, $args=null)
1301 // Does a little before-after block for next/prev page
1302 if ($have_before || $have_after) {
1303 $this->elementStart('ul', array('class' => 'nav',
1304 'id' => 'pagination'));
1307 $pargs = array('page' => $page-1);
1308 $this->elementStart('li', array('class' => 'nav_prev'));
1309 $this->element('a', array('href' => common_local_url($action, $args, $pargs),
1311 // TRANS: Pagination message to go to a page displaying information more in the
1312 // TRANS: present than the currently displayed information.
1314 $this->elementEnd('li');
1317 $pargs = array('page' => $page+1);
1318 $this->elementStart('li', array('class' => 'nav_next'));
1319 $this->element('a', array('href' => common_local_url($action, $args, $pargs),
1321 // TRANS: Pagination message to go to a page displaying information more in the
1322 // TRANS: past than the currently displayed information.
1324 $this->elementEnd('li');
1326 if ($have_before || $have_after) {
1327 $this->elementEnd('ul');
1332 * An array of feeds for this action.
1334 * Returns an array of potential feeds for this action.
1336 * @return array Feed object to show in head and links
1344 * A design for this action
1346 * @return Design a design object to use
1348 function getDesign()
1350 return Design::siteDesign();
1354 * Check the session token.
1356 * Checks that the current form has the correct session token,
1357 * and throw an exception if it does not.
1361 // XXX: Finding this type of check with the same message about 50 times.
1362 // Possible to refactor?
1363 function checkSessionToken()
1366 $token = $this->trimmed('token');
1367 if (empty($token) || $token != common_session_token()) {
1368 // TRANS: Client error text when there is a problem with the session token.
1369 $this->clientError(_('There was a problem with your session token.'));
1374 * Check if the current request is a POST
1376 * @return boolean true if POST; otherwise false.
1381 return ($_SERVER['REQUEST_METHOD'] == 'POST');