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));
118 if (isset($_startTime)) {
119 $endTime = microtime(true);
120 $diff = round(($endTime - $_startTime) * 1000);
121 $this->raw("<!-- ${diff}ms -->");
124 return parent::endHTML();
128 * Show head, a template method.
134 // XXX: attributes (profile?)
135 $this->elementStart('head');
136 if (Event::handle('StartShowHeadElements', array($this))) {
137 if (Event::handle('StartShowHeadTitle', array($this))) {
139 Event::handle('EndShowHeadTitle', array($this));
141 $this->showShortcutIcon();
142 $this->showStylesheets();
143 $this->showOpenSearch();
145 $this->showDescription();
147 Event::handle('EndShowHeadElements', array($this));
149 $this->elementEnd('head');
153 * Show title, a template method.
159 $this->element('title', null,
160 // TRANS: Page title. %1$s is the title, %2$s is the site name.
161 sprintf(_("%1\$s - %2\$s"),
163 common_config('site', 'name')));
167 * Returns the page title
171 * @return string page title
176 // TRANS: Page title for a page without a title set.
177 return _("Untitled page");
181 * Show themed shortcut icon
185 function showShortcutIcon()
187 if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/favicon.ico')) {
188 $this->element('link', array('rel' => 'shortcut icon',
189 'href' => Theme::path('favicon.ico')));
191 // favicon.ico should be HTTPS if the rest of the page is
192 $this->element('link', array('rel' => 'shortcut icon',
193 'href' => common_path('favicon.ico', StatusNet::isHTTPS())));
196 if (common_config('site', 'mobile')) {
197 if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/apple-touch-icon.png')) {
198 $this->element('link', array('rel' => 'apple-touch-icon',
199 'href' => Theme::path('apple-touch-icon.png')));
201 $this->element('link', array('rel' => 'apple-touch-icon',
202 'href' => common_path('apple-touch-icon.png')));
212 function showStylesheets()
214 if (Event::handle('StartShowStyles', array($this))) {
216 // Use old name for StatusNet for compatibility on events
218 if (Event::handle('StartShowStatusNetStyles', array($this)) &&
219 Event::handle('StartShowLaconicaStyles', array($this))) {
220 $this->primaryCssLink(null, 'screen, projection, tv, print');
221 Event::handle('EndShowStatusNetStyles', array($this));
222 Event::handle('EndShowLaconicaStyles', array($this));
225 if (Event::handle('StartShowUAStyles', array($this))) {
226 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
227 'href="'.Theme::path('css/ie.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
228 foreach (array(6,7) as $ver) {
229 if (file_exists(Theme::file('css/ie'.$ver.'.css', 'base'))) {
230 // Yes, IE people should be put in jail.
231 $this->comment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
232 'href="'.Theme::path('css/ie'.$ver.'.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
235 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
236 'href="'.Theme::path('css/ie.css', null).'?version='.STATUSNET_VERSION.'" /><![endif]');
237 Event::handle('EndShowUAStyles', array($this));
240 if (Event::handle('StartShowDesign', array($this))) {
242 $user = common_current_user();
244 if (empty($user) || $user->viewdesigns) {
245 $design = $this->getDesign();
247 if (!empty($design)) {
248 $design->showCSS($this);
252 Event::handle('EndShowDesign', array($this));
254 Event::handle('EndShowStyles', array($this));
256 if (common_config('custom_css', 'enabled')) {
257 $css = common_config('custom_css', 'css');
258 if (Event::handle('StartShowCustomCss', array($this, &$css))) {
259 if (trim($css) != '') {
262 Event::handle('EndShowCustomCss', array($this));
268 function primaryCssLink($mainTheme=null, $media=null)
270 // If the currently-selected theme has dependencies on other themes,
271 // we'll need to load their display.css files as well in order.
272 $theme = new Theme($mainTheme);
273 $baseThemes = $theme->getDeps();
274 foreach ($baseThemes as $baseTheme) {
275 $this->cssLink('css/display.css', $baseTheme, $media);
277 $this->cssLink('css/display.css', $mainTheme, $media);
281 * Show javascript headers
285 function showScripts()
287 if (Event::handle('StartShowScripts', array($this))) {
288 if (Event::handle('StartShowJQueryScripts', array($this))) {
289 $this->script('jquery.min.js');
290 $this->script('jquery.form.min.js');
291 $this->script('jquery.cookie.min.js');
292 $this->inlineScript('if (typeof window.JSON !== "object") { $.getScript("'.common_path('js/json2.min.js').'"); }');
293 $this->script('jquery.joverlay.min.js');
294 Event::handle('EndShowJQueryScripts', array($this));
296 if (Event::handle('StartShowStatusNetScripts', array($this)) &&
297 Event::handle('StartShowLaconicaScripts', array($this))) {
298 if (common_config('site', 'minify')) {
299 $this->script('util.min.js');
301 $this->script('util.js');
302 $this->script('xbImportNode.js');
303 $this->script('geometa.js');
305 $this->showScriptMessages();
306 // Frame-busting code to avoid clickjacking attacks.
307 $this->inlineScript('if (window.top !== window.self) { window.top.location.href = window.self.location.href; }');
308 Event::handle('EndShowStatusNetScripts', array($this));
309 Event::handle('EndShowLaconicaScripts', array($this));
311 Event::handle('EndShowScripts', array($this));
316 * Exports a map of localized text strings to JavaScript code.
318 * Plugins can add to what's exported by hooking the StartScriptMessages or EndScriptMessages
319 * events and appending to the array. Try to avoid adding strings that won't be used, as
320 * they'll be added to HTML output.
323 function showScriptMessages()
327 if (Event::handle('StartScriptMessages', array($this, &$messages))) {
328 // Common messages needed for timeline views etc...
330 // TRANS: Localized tooltip for '...' expansion button on overlong remote messages.
331 $messages['showmore_tooltip'] = _m('TOOLTIP', 'Show more');
333 // TRANS: Inline reply form submit button: submits a reply comment.
334 $messages['reply_submit'] = _m('BUTTON', 'Reply');
336 // TRANS: Placeholder text for inline reply form. Clicking in this box will turn it into a mini notice form.
337 $messages['reply_placeholder'] = _m('Write a reply...');
339 $messages = array_merge($messages, $this->getScriptMessages());
341 Event::handle('EndScriptMessages', array($this, &$messages));
344 if (!empty($messages)) {
345 $this->inlineScript('SN.messages=' . json_encode($messages));
352 * If the action will need localizable text strings, export them here like so:
354 * return array('pool_deepend' => _('Deep end'),
355 * 'pool_shallow' => _('Shallow end'));
357 * The exported map will be available via SN.msg() to JS code:
359 * $('#pool').html('<div class="deepend"></div><div class="shallow"></div>');
360 * $('#pool .deepend').text(SN.msg('pool_deepend'));
361 * $('#pool .shallow').text(SN.msg('pool_shallow'));
363 * Exports a map of localized text strings to JavaScript code.
365 * Plugins can add to what's exported on any action by hooking the StartScriptMessages or
366 * EndScriptMessages events and appending to the array. Try to avoid adding strings that won't
367 * be used, as they'll be added to HTML output.
369 function getScriptMessages()
375 * Show OpenSearch headers
379 function showOpenSearch()
381 $this->element('link', array('rel' => 'search',
382 'type' => 'application/opensearchdescription+xml',
383 'href' => common_local_url('opensearch', array('type' => 'people')),
384 'title' => common_config('site', 'name').' People Search'));
385 $this->element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
386 'href' => common_local_url('opensearch', array('type' => 'notice')),
387 'title' => common_config('site', 'name').' Notice Search'));
399 $feeds = $this->getFeeds();
402 foreach ($feeds as $feed) {
403 $this->element('link', array('rel' => $feed->rel(),
404 'href' => $feed->url,
405 'type' => $feed->mimeType(),
406 'title' => $feed->title));
418 function showDescription()
420 // does nothing by default
424 * Show extra stuff in <head>.
432 // does nothing by default
438 * Calls template methods
444 $this->elementStart('body', (common_current_user()) ? array('id' => strtolower($this->trimmed('action')),
445 'class' => 'user_in')
446 : array('id' => strtolower($this->trimmed('action'))));
447 $this->elementStart('div', array('id' => 'wrap'));
448 if (Event::handle('StartShowHeader', array($this))) {
450 Event::handle('EndShowHeader', array($this));
453 if (Event::handle('StartShowFooter', array($this))) {
455 Event::handle('EndShowFooter', array($this));
457 $this->elementEnd('div');
458 $this->showScripts();
459 $this->elementEnd('body');
463 * Show header of the page.
465 * Calls template methods
469 function showHeader()
471 $this->elementStart('div', array('id' => 'header'));
473 $this->showPrimaryNav();
474 if (Event::handle('StartShowSiteNotice', array($this))) {
475 $this->showSiteNotice();
477 Event::handle('EndShowSiteNotice', array($this));
480 $this->elementEnd('div');
484 * Show configured logo.
490 $this->elementStart('address', array('id' => 'site_contact',
491 'class' => 'vcard'));
492 if (Event::handle('StartAddressData', array($this))) {
493 if (common_config('singleuser', 'enabled')) {
494 $user = User::singleUser();
495 $url = common_local_url('showstream',
496 array('nickname' => $user->nickname));
497 } else if (common_logged_in()) {
498 $cur = common_current_user();
499 $url = common_local_url('all', array('nickname' => $cur->nickname));
501 $url = common_local_url('public');
504 $this->elementStart('a', array('class' => 'url home bookmark',
507 if (StatusNet::isHTTPS()) {
508 $logoUrl = common_config('site', 'ssllogo');
509 if (empty($logoUrl)) {
510 // if logo is an uploaded file, try to fall back to HTTPS file URL
511 $httpUrl = common_config('site', 'logo');
512 if (!empty($httpUrl)) {
513 $f = File::staticGet('url', $httpUrl);
514 if (!empty($f) && !empty($f->filename)) {
515 // this will handle the HTTPS case
516 $logoUrl = File::url($f->filename);
521 $logoUrl = common_config('site', 'logo');
524 if (empty($logoUrl) && file_exists(Theme::file('logo.png'))) {
525 // This should handle the HTTPS case internally
526 $logoUrl = Theme::path('logo.png');
529 if (!empty($logoUrl)) {
530 $this->element('img', array('class' => 'logo photo',
532 'alt' => common_config('site', 'name')));
536 $this->element('span', array('class' => 'fn org'), common_config('site', 'name'));
537 $this->elementEnd('a');
539 Event::handle('EndAddressData', array($this));
541 $this->elementEnd('address');
545 * Show primary navigation.
549 function showPrimaryNav()
551 $this->elementStart('div', array('id' => 'site_nav_global_primary'));
552 $pn = new PrimaryNav($this);
554 $this->elementEnd('div');
562 function showSiteNotice()
564 // Revist. Should probably do an hAtom pattern here
565 $text = common_config('site', 'notice');
567 $this->elementStart('div', array('id' => 'site_notice',
568 'class' => 'system_notice'));
570 $this->elementEnd('div');
577 * MAY overload if no notice form needed... or direct message box????
581 function showNoticeForm()
583 $tabs = array('status' => _('Status'));
585 $this->elementStart('div', 'input_forms');
587 if (Event::handle('StartShowEntryForms', array(&$tabs))) {
589 $this->elementStart('ul', array('class' => 'nav',
590 'id' => 'input_form_nav'));
592 foreach ($tabs as $tag => $title) {
594 $attrs = array('id' => 'input_form_nav_'.$tag,
595 'class' => 'input_form_nav_tab');
597 if ($tag == 'status') {
598 $attrs['class'] = 'current';
601 $this->elementStart('li', $attrs);
604 array('href' => 'javascript:SN.U.switchInputFormTab("'.$tag.'")'),
606 $this->elementEnd('li');
609 $this->elementEnd('ul');
611 foreach ($tabs as $tag => $title) {
613 $attrs = array('class' => 'input_form',
614 'id' => 'input_form_'.$tag);
616 if ($tag == 'status') {
617 $attrs['class'] .= ' current';
620 $this->elementStart('div', $attrs);
624 if (Event::handle('StartMakeEntryForm', array($tag, $this, &$form))) {
625 if ($tag == 'status') {
626 $form = new NoticeForm($this);
628 Event::handle('EndMakeEntryForm', array($tag, $this, $form));
635 $this->elementEnd('div');
641 * Show anonymous message.
647 function showAnonymousMessage()
649 // needs to be defined by the class
655 * Shows local navigation, content block and aside.
661 $this->elementStart('div', array('id' => 'core'));
662 if (Event::handle('StartShowLocalNavBlock', array($this))) {
663 $this->showLocalNavBlock();
664 Event::handle('EndShowLocalNavBlock', array($this));
666 if (Event::handle('StartShowContentBlock', array($this))) {
667 $this->showContentBlock();
668 Event::handle('EndShowContentBlock', array($this));
670 if (Event::handle('StartShowObjectNavBlock', array($this))) {
671 $this->showObjectNavBlock();
672 Event::handle('EndShowObjectNavBlock', array($this));
674 if (Event::handle('StartShowAside', array($this))) {
676 Event::handle('EndShowAside', array($this));
678 $this->elementEnd('div');
682 * Show local navigation block.
686 function showLocalNavBlock()
688 // Need to have this ID for CSS; I'm too lazy to add it to
690 $this->elementStart('div', array('id' => 'site_nav_local_views'));
691 $this->showLocalNav();
692 $this->elementEnd('div');
696 * Show local navigation.
702 function showLocalNav()
704 $nav = new DefaultLocalNav($this);
709 * Show menu for an object (group, profile)
713 function showObjectNavBlock()
715 // Need to have this ID for CSS; I'm too lazy to add it to
717 $this->elementStart('div', array('id' => 'site_nav_object'));
718 $this->showObjectNav();
719 $this->elementEnd('div');
723 * Show object navigation.
725 * If there are things to do with this object, show it here.
729 function showObjectNav()
735 * Show content block.
739 function showContentBlock()
741 $this->elementStart('div', array('id' => 'content'));
742 if (common_logged_in()) {
743 if (Event::handle('StartShowNoticeForm', array($this))) {
744 $this->showNoticeForm();
745 Event::handle('EndShowNoticeForm', array($this));
748 if (Event::handle('StartShowPageTitle', array($this))) {
749 $this->showPageTitle();
750 Event::handle('EndShowPageTitle', array($this));
752 $this->showPageNoticeBlock();
753 $this->elementStart('div', array('id' => 'content_inner'));
754 // show the actual content (forms, lists, whatever)
755 $this->showContent();
756 $this->elementEnd('div');
757 $this->elementEnd('div');
765 function showPageTitle()
767 $this->element('h1', null, $this->title());
771 * Show page notice block.
773 * Only show the block if a subclassed action has overrided
774 * Action::showPageNotice(), or an event handler is registered for
775 * the StartShowPageNotice event, in which case we assume the
776 * 'page_notice' definition list is desired. This is to prevent
777 * empty 'page_notice' definition lists from being output everywhere.
781 function showPageNoticeBlock()
783 $rmethod = new ReflectionMethod($this, 'showPageNotice');
784 $dclass = $rmethod->getDeclaringClass()->getName();
786 if ($dclass != 'Action' || Event::hasHandler('StartShowPageNotice')) {
788 $this->elementStart('div', array('id' => 'page_notice',
789 'class' => 'system_notice'));
790 if (Event::handle('StartShowPageNotice', array($this))) {
791 $this->showPageNotice();
792 Event::handle('EndShowPageNotice', array($this));
794 $this->elementEnd('div');
801 * SHOULD overload (unless there's not a notice)
805 function showPageNotice()
812 * MUST overload (unless there's not a notice)
816 function showContent()
827 $this->elementStart('div', array('id' => 'aside_primary',
828 'class' => 'aside'));
829 if (Event::handle('StartShowSections', array($this))) {
830 $this->showSections();
831 Event::handle('EndShowSections', array($this));
833 if (Event::handle('StartShowExportData', array($this))) {
834 $this->showExportData();
835 Event::handle('EndShowExportData', array($this));
837 $this->elementEnd('div');
841 * Show export data feeds.
845 function showExportData()
847 $feeds = $this->getFeeds();
849 $fl = new FeedList($this);
861 function showSections()
863 // for each section, show it
871 function showFooter()
873 $this->elementStart('div', array('id' => 'footer'));
874 if (Event::handle('StartShowInsideFooter', array($this))) {
875 $this->showSecondaryNav();
876 $this->showLicenses();
877 Event::handle('EndShowInsideFooter', array($this));
879 $this->elementEnd('div');
883 * Show secondary navigation.
887 function showSecondaryNav()
889 $sn = new SecondaryNav($this);
898 function showLicenses()
900 $this->showStatusNetLicense();
901 $this->showContentLicense();
905 * Show StatusNet license.
909 function showStatusNetLicense()
911 if (common_config('site', 'broughtby')) {
912 // TRANS: First sentence of the StatusNet site license. Used if 'broughtby' is set.
913 // TRANS: Text between [] is a link description, text between () is the link itself.
914 // TRANS: Make sure there is no whitespace between "]" and "(".
915 // TRANS: "%%site.broughtby%%" is the value of the variable site.broughtby
916 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%).');
918 // TRANS: First sentence of the StatusNet site license. Used if 'broughtby' is not set.
919 $instr = _('**%%site.name%%** is a microblogging service.');
922 // TRANS: Second sentence of the StatusNet site license. Mentions the StatusNet source code license.
923 // TRANS: Make sure there is no whitespace between "]" and "(".
924 // TRANS: Text between [] is a link description, text between () is the link itself.
925 // TRANS: %s is the version of StatusNet that is being used.
926 $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);
927 $output = common_markup_to_html($instr);
933 * Show content license.
937 function showContentLicense()
939 if (Event::handle('StartShowContentLicense', array($this))) {
940 switch (common_config('license', 'type')) {
942 // TRANS: Content license displayed when license is set to 'private'.
943 // TRANS: %1$s is the site name.
944 $this->element('p', null, sprintf(_('Content and data of %1$s are private and confidential.'),
945 common_config('site', 'name')));
947 case 'allrightsreserved':
948 if (common_config('license', 'owner')) {
949 // TRANS: Content license displayed when license is set to 'allrightsreserved'.
950 // TRANS: %1$s is the copyright owner.
951 $this->element('p', null, sprintf(_('Content and data copyright by %1$s. All rights reserved.'),
952 common_config('license', 'owner')));
954 // TRANS: Content license displayed when license is set to 'allrightsreserved' and no owner is set.
955 $this->element('p', null, _('Content and data copyright by contributors. All rights reserved.'));
958 case 'cc': // fall through
960 $this->elementStart('p');
962 $image = common_config('license', 'image');
963 $sslimage = common_config('license', 'sslimage');
965 if (StatusNet::isHTTPS()) {
966 if (!empty($sslimage)) {
968 } else if (preg_match('#^http://i.creativecommons.org/#', $image)) {
969 // CC support HTTPS on their images
970 $url = preg_replace('/^http/', 'https', $image);
972 // Better to show mixed content than no content
979 $this->element('img', array('id' => 'license_cc',
981 'alt' => common_config('license', 'title'),
985 // TRANS: license message in footer.
986 // TRANS: %1$s is the site name, %2$s is a link to the license URL, with a licence name set in configuration.
987 $notice = _('All %1$s content and data are available under the %2$s license.');
988 $link = "<a class=\"license\" rel=\"external license\" href=\"" .
989 htmlspecialchars(common_config('license', 'url')) .
991 htmlspecialchars(common_config('license', 'title')) .
993 $this->raw(sprintf(htmlspecialchars($notice),
994 htmlspecialchars(common_config('site', 'name')),
996 $this->elementEnd('p');
1000 Event::handle('EndShowContentLicense', array($this));
1005 * Return last modified, if applicable.
1009 * @return string last modified http header
1011 function lastModified()
1013 // For comparison with If-Last-Modified
1014 // If not applicable, return null
1019 * Return etag, if applicable.
1023 * @return string etag http header
1031 * Return true if read only.
1035 * @param array $args other arguments
1037 * @return boolean is read only action?
1039 function isReadOnly($args)
1045 * Returns query argument or default value if not found
1047 * @param string $key requested argument
1048 * @param string $def default value to return if $key is not provided
1050 * @return boolean is read only action?
1052 function arg($key, $def=null)
1054 if (array_key_exists($key, $this->args)) {
1055 return $this->args[$key];
1062 * Returns trimmed query argument or default value if not found
1064 * @param string $key requested argument
1065 * @param string $def default value to return if $key is not provided
1067 * @return boolean is read only action?
1069 function trimmed($key, $def=null)
1071 $arg = $this->arg($key, $def);
1072 return is_string($arg) ? trim($arg) : $arg;
1078 * @param array $argarray is ignored since it's now passed in in prepare()
1080 * @return boolean is read only action?
1082 function handle($argarray=null)
1084 header('Vary: Accept-Encoding,Cookie');
1086 $lm = $this->lastModified();
1087 $etag = $this->etag();
1090 header('ETag: ' . $etag);
1094 header('Last-Modified: ' . date(DATE_RFC1123, $lm));
1095 if ($this->isCacheable()) {
1096 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1097 header( "Cache-Control: private, must-revalidate, max-age=0" );
1104 $if_none_match = (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER)) ?
1105 $_SERVER['HTTP_IF_NONE_MATCH'] : null;
1106 if ($if_none_match) {
1107 // If this check fails, ignore the if-modified-since below.
1109 if ($this->_hasEtag($etag, $if_none_match)) {
1110 header('HTTP/1.1 304 Not Modified');
1111 // Better way to do this?
1117 if (!$checked && $lm && array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER)) {
1118 $if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
1119 $ims = strtotime($if_modified_since);
1121 header('HTTP/1.1 304 Not Modified');
1122 // Better way to do this?
1129 * Is this action cacheable?
1131 * If the action returns a last-modified
1133 * @param array $argarray is ignored since it's now passed in in prepare()
1135 * @return boolean is read only action?
1137 function isCacheable()
1143 * Has etag? (private)
1145 * @param string $etag etag http header
1146 * @param string $if_none_match ifNoneMatch http header
1150 function _hasEtag($etag, $if_none_match)
1152 $etags = explode(',', $if_none_match);
1153 return in_array($etag, $etags) || in_array('*', $etags);
1157 * Boolean understands english (yes, no, true, false)
1159 * @param string $key query key we're interested in
1160 * @param string $def default value
1162 * @return boolean interprets yes/no strings as boolean
1164 function boolean($key, $def=false)
1166 $arg = strtolower($this->trimmed($key));
1168 if (is_null($arg)) {
1170 } else if (in_array($arg, array('true', 'yes', '1', 'on'))) {
1172 } else if (in_array($arg, array('false', 'no', '0'))) {
1180 * Integer value of an argument
1182 * @param string $key query key we're interested in
1183 * @param string $defValue optional default value (default null)
1184 * @param string $maxValue optional max value (default null)
1185 * @param string $minValue optional min value (default null)
1187 * @return integer integer value
1189 function int($key, $defValue=null, $maxValue=null, $minValue=null)
1191 $arg = strtolower($this->trimmed($key));
1193 if (is_null($arg) || !is_integer($arg)) {
1197 if (!is_null($maxValue)) {
1198 $arg = min($arg, $maxValue);
1201 if (!is_null($minValue)) {
1202 $arg = max($arg, $minValue);
1211 * @param string $msg error message to display
1212 * @param integer $code http error code, 500 by default
1216 function serverError($msg, $code=500)
1218 $action = $this->trimmed('action');
1219 common_debug("Server error '$code' on '$action': $msg", __FILE__);
1220 throw new ServerException($msg, $code);
1226 * @param string $msg error message to display
1227 * @param integer $code http error code, 400 by default
1231 function clientError($msg, $code=400)
1233 $action = $this->trimmed('action');
1234 common_debug("User error '$code' on '$action': $msg", __FILE__);
1235 throw new ClientException($msg, $code);
1239 * Returns the current URL
1241 * @return string current URL
1245 list($action, $args) = $this->returnToArgs();
1246 return common_local_url($action, $args);
1250 * Returns arguments sufficient for re-constructing URL
1252 * @return array two elements: action, other args
1254 function returnToArgs()
1256 $action = $this->trimmed('action');
1257 $args = $this->args;
1258 unset($args['action']);
1259 if (common_config('site', 'fancy')) {
1262 if (array_key_exists('submit', $args)) {
1263 unset($args['submit']);
1265 foreach (array_keys($_COOKIE) as $cookie) {
1266 unset($args[$cookie]);
1268 return array($action, $args);
1272 * Generate a menu item
1274 * @param string $url menu URL
1275 * @param string $text menu name
1276 * @param string $title title attribute, null by default
1277 * @param boolean $is_selected current menu item, false by default
1278 * @param string $id element id, null by default
1282 function menuItem($url, $text, $title=null, $is_selected=false, $id=null)
1284 // Added @id to li for some control.
1285 // XXX: We might want to move this to htmloutputter.php
1288 $lattrs['class'] = 'current';
1291 (is_null($id)) ? $lattrs : $lattrs['id'] = $id;
1293 $this->elementStart('li', $lattrs);
1294 $attrs['href'] = $url;
1296 $attrs['title'] = $title;
1298 $this->element('a', $attrs, $text);
1299 $this->elementEnd('li');
1303 * Generate pagination links
1305 * @param boolean $have_before is there something before?
1306 * @param boolean $have_after is there something after?
1307 * @param integer $page current page
1308 * @param string $action current action
1309 * @param array $args rest of query arguments
1313 // XXX: The messages in this pagination method only tailor to navigating
1314 // notices. In other lists, "Previous"/"Next" type navigation is
1315 // desirable, but not available.
1316 function pagination($have_before, $have_after, $page, $action, $args=null)
1318 // Does a little before-after block for next/prev page
1319 if ($have_before || $have_after) {
1320 $this->elementStart('ul', array('class' => 'nav',
1321 'id' => 'pagination'));
1324 $pargs = array('page' => $page-1);
1325 $this->elementStart('li', array('class' => 'nav_prev'));
1326 $this->element('a', array('href' => common_local_url($action, $args, $pargs),
1328 // TRANS: Pagination message to go to a page displaying information more in the
1329 // TRANS: present than the currently displayed information.
1331 $this->elementEnd('li');
1334 $pargs = array('page' => $page+1);
1335 $this->elementStart('li', array('class' => 'nav_next'));
1336 $this->element('a', array('href' => common_local_url($action, $args, $pargs),
1338 // TRANS: Pagination message to go to a page displaying information more in the
1339 // TRANS: past than the currently displayed information.
1341 $this->elementEnd('li');
1343 if ($have_before || $have_after) {
1344 $this->elementEnd('ul');
1349 * An array of feeds for this action.
1351 * Returns an array of potential feeds for this action.
1353 * @return array Feed object to show in head and links
1361 * A design for this action
1363 * @return Design a design object to use
1365 function getDesign()
1367 return Design::siteDesign();
1371 * Check the session token.
1373 * Checks that the current form has the correct session token,
1374 * and throw an exception if it does not.
1378 // XXX: Finding this type of check with the same message about 50 times.
1379 // Possible to refactor?
1380 function checkSessionToken()
1383 $token = $this->trimmed('token');
1384 if (empty($token) || $token != common_session_token()) {
1385 // TRANS: Client error text when there is a problem with the session token.
1386 $this->clientError(_('There was a problem with your session token.'));
1391 * Check if the current request is a POST
1393 * @return boolean true if POST; otherwise false.
1398 return ($_SERVER['REQUEST_METHOD'] == 'POST');