3 * Laconica, 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@controlyourself.ca>
25 * @author Sarven Capadisli <csarven@controlyourself.ca>
26 * @copyright 2008 Control Yourself, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
28 * @link http://laconi.ca/
31 if (!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@controlyourself.ca>
50 * @author Sarven Capadisli <csarven@controlyourself.ca>
51 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
52 * @link http://laconi.ca/
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', $indent=true)
73 parent::__construct($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.
103 * Show head, a template method.
109 // XXX: attributes (profile?)
110 $this->elementStart('head');
112 $this->showStylesheets();
113 $this->showScripts();
114 $this->showOpenSearch();
116 $this->showDescription();
118 $this->elementEnd('head');
122 * Show title, a template method.
128 $this->element('title', null,
129 sprintf(_("%s - %s"),
131 common_config('site', 'name')));
135 * Returns the page title
139 * @return string page title
144 return _("Untitled page");
152 function showStylesheets()
154 $this->element('link', array('rel' => 'stylesheet',
155 'type' => 'text/css',
156 'href' => theme_path('css/display.css', 'base') . '?version=' . LACONICA_VERSION,
157 'media' => 'screen, projection, tv'));
158 $this->element('link', array('rel' => 'stylesheet',
159 'type' => 'text/css',
160 'href' => theme_path('css/display.css', null) . '?version=' . LACONICA_VERSION,
161 'media' => 'screen, projection, tv'));
162 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
163 'href="'.theme_path('css/ie.css', 'base').'?version='.LACONICA_VERSION.'" /><![endif]');
164 foreach (array(6,7) as $ver) {
165 if (file_exists(theme_file('css/ie'.$ver.'.css', 'base'))) {
166 // Yes, IE people should be put in jail.
167 $this->comment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
168 'href="'.theme_path('css/ie'.$ver.'.css', 'base').'?version='.LACONICA_VERSION.'" /><![endif]');
171 $this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
172 'href="'.theme_path('css/ie.css', null).'?version='.LACONICA_VERSION.'" /><![endif]');
176 * Show javascript headers
180 function showScripts()
182 if (Event::handle('StartShowScripts', array($this))) {
183 if (Event::handle('StartShowJQueryScripts', array($this))) {
184 $this->element('script', array('type' => 'text/javascript',
185 'src' => common_path('js/jquery.min.js')),
187 $this->element('script', array('type' => 'text/javascript',
188 'src' => common_path('js/jquery.form.js')),
190 Event::handle('EndShowJQueryScripts', array($this));
192 if (Event::handle('StartShowLaconicaScripts', array($this))) {
193 $this->element('script', array('type' => 'text/javascript',
194 'src' => common_path('js/xbImportNode.js')),
196 $this->element('script', array('type' => 'text/javascript',
197 'src' => common_path('js/util.js?version='.LACONICA_VERSION)),
199 Event::handle('EndShowLaconicaScripts', array($this));
201 Event::handle('EndShowScripts', array($this));
206 * Show OpenSearch headers
210 function showOpenSearch()
212 $this->element('link', array('rel' => 'search',
213 'type' => 'application/opensearchdescription+xml',
214 'href' => common_local_url('opensearch', array('type' => 'people')),
215 'title' => common_config('site', 'name').' People Search'));
216 $this->element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
217 'href' => common_local_url('opensearch', array('type' => 'notice')),
218 'title' => common_config('site', 'name').' Notice Search'));
231 $feeds = $this->getFeeds();
234 foreach ($feeds as $feed) {
235 $this->element('link', array('rel' => $feed->rel(),
236 'href' => $feed->url,
237 'type' => $feed->mimeType(),
238 'title' => $feed->title));
250 function showDescription()
252 // does nothing by default
256 * Show extra stuff in <head>.
264 // does nothing by default
270 * Calls template methods
276 $this->elementStart('body', array('id' => $this->trimmed('action')));
277 $this->elementStart('div', array('id' => 'wrap'));
278 if (Event::handle('StartShowHeader', array($this))) {
280 Event::handle('EndShowHeader', array($this));
283 if (Event::handle('StartShowFooter', array($this))) {
285 Event::handle('EndShowFooter', array($this));
287 $this->elementEnd('div');
288 $this->elementEnd('body');
292 * Show header of the page.
294 * Calls template methods
298 function showHeader()
300 $this->elementStart('div', array('id' => 'header'));
302 $this->showPrimaryNav();
303 $this->showSiteNotice();
304 if (common_logged_in()) {
305 $this->showNoticeForm();
307 $this->showAnonymousMessage();
309 $this->elementEnd('div');
313 * Show configured logo.
319 $this->elementStart('address', array('id' => 'site_contact',
320 'class' => 'vcard'));
321 $this->elementStart('a', array('class' => 'url home bookmark',
322 'href' => common_local_url('public')));
323 if (common_config('site', 'logo') || file_exists(theme_file('logo.png'))) {
324 $this->element('img', array('class' => 'logo photo',
325 'src' => (common_config('site', 'logo')) ? common_config('site', 'logo') : theme_path('logo.png'),
326 'alt' => common_config('site', 'name')));
328 $this->element('span', array('class' => 'fn org'), common_config('site', 'name'));
329 $this->elementEnd('a');
330 $this->elementEnd('address');
334 * Show primary navigation.
338 function showPrimaryNav()
340 $user = common_current_user();
342 $this->elementStart('dl', array('id' => 'site_nav_global_primary'));
343 $this->element('dt', null, _('Primary site navigation'));
344 $this->elementStart('dd');
345 $this->elementStart('ul', array('class' => 'nav'));
346 if (Event::handle('StartPrimaryNav', array($this))) {
348 $this->menuItem(common_local_url('all', array('nickname' => $user->nickname)),
349 _('Home'), _('Personal profile and friends timeline'), false, 'nav_home');
351 $this->menuItem(common_local_url('peoplesearch'),
352 _('Search'), _('Search for people or text'), false, 'nav_search');
354 $this->menuItem(common_local_url('profilesettings'),
355 _('Account'), _('Change your email, avatar, password, profile'), false, 'nav_account');
357 if (common_config('xmpp', 'enabled')) {
358 $this->menuItem(common_local_url('imsettings'),
359 _('Connect'), _('Connect to IM, SMS, Twitter'), false, 'nav_connect');
361 $this->menuItem(common_local_url('smssettings'),
362 _('Connect'), _('Connect to SMS, Twitter'), false, 'nav_connect');
364 $this->menuItem(common_local_url('logout'),
365 _('Logout'), _('Logout from the site'), false, 'nav_logout');
367 $this->menuItem(common_local_url('login'),
368 _('Login'), _('Login to the site'), false, 'nav_login');
369 if (!common_config('site', 'closed')) {
370 $this->menuItem(common_local_url('register'),
371 _('Register'), _('Create an account'), false, 'nav_register');
373 $this->menuItem(common_local_url('openidlogin'),
374 _('OpenID'), _('Login with OpenID'), false, 'nav_openid');
376 $this->menuItem(common_local_url('doc', array('title' => 'help')),
377 _('Help'), _('Help me!'), false, 'nav_help');
378 Event::handle('EndPrimaryNav', array($this));
380 $this->elementEnd('ul');
381 $this->elementEnd('dd');
382 $this->elementEnd('dl');
390 function showSiteNotice()
392 // Revist. Should probably do an hAtom pattern here
393 $text = common_config('site', 'notice');
395 $this->elementStart('dl', array('id' => 'site_notice',
396 'class' => 'system_notice'));
397 $this->element('dt', null, _('Site notice'));
398 $this->elementStart('dd', null);
400 $this->elementEnd('dd');
401 $this->elementEnd('dl');
408 * MAY overload if no notice form needed... or direct message box????
412 function showNoticeForm()
414 $notice_form = new NoticeForm($this);
415 $notice_form->show();
419 * Show anonymous message.
425 function showAnonymousMessage()
427 // needs to be defined by the class
433 * Shows local navigation, content block and aside.
439 $this->elementStart('div', array('id' => 'core'));
440 $this->showLocalNavBlock();
441 if (Event::handle('StartShowContentBlock', array($this))) {
442 $this->showContentBlock();
443 Event::handle('EndShowContentBlock', array($this));
446 $this->elementEnd('div');
450 * Show local navigation block.
454 function showLocalNavBlock()
456 $this->elementStart('dl', array('id' => 'site_nav_local_views'));
457 $this->element('dt', null, _('Local views'));
458 $this->elementStart('dd');
459 $this->showLocalNav();
460 $this->elementEnd('dd');
461 $this->elementEnd('dl');
465 * Show local navigation.
471 function showLocalNav()
473 // does nothing by default
477 * Show content block.
481 function showContentBlock()
483 $this->elementStart('div', array('id' => 'content'));
484 $this->showPageTitle();
485 $this->showPageNoticeBlock();
486 $this->elementStart('div', array('id' => 'content_inner'));
487 // show the actual content (forms, lists, whatever)
488 $this->showContent();
489 $this->elementEnd('div');
490 $this->elementEnd('div');
498 function showPageTitle()
500 $this->element('h1', null, $this->title());
504 * Show page notice block.
508 function showPageNoticeBlock()
510 $this->elementStart('dl', array('id' => 'page_notice',
511 'class' => 'system_notice'));
512 $this->element('dt', null, _('Page notice'));
513 $this->elementStart('dd');
514 $this->showPageNotice();
515 $this->elementEnd('dd');
516 $this->elementEnd('dl');
522 * SHOULD overload (unless there's not a notice)
526 function showPageNotice()
533 * MUST overload (unless there's not a notice)
537 function showContent()
549 $this->elementStart('div', array('id' => 'aside_primary',
550 'class' => 'aside'));
551 $this->showExportData();
552 if (Event::handle('StartShowSections', array($this))) {
553 $this->showSections();
554 Event::handle('EndShowSections', array($this));
556 $this->elementEnd('div');
560 * Show export data feeds.
565 function showExportData()
567 $feeds = $this->getFeeds();
569 $fl = new FeedList($this);
581 function showSections()
583 // for each section, show it
591 function showFooter()
593 $this->elementStart('div', array('id' => 'footer'));
594 $this->showSecondaryNav();
595 $this->showLicenses();
596 $this->elementEnd('div');
600 * Show secondary navigation.
604 function showSecondaryNav()
606 $this->elementStart('dl', array('id' => 'site_nav_global_secondary'));
607 $this->element('dt', null, _('Secondary site navigation'));
608 $this->elementStart('dd', null);
609 $this->elementStart('ul', array('class' => 'nav'));
610 if (Event::handle('StartSecondaryNav', array($this))) {
611 $this->menuItem(common_local_url('doc', array('title' => 'help')),
613 $this->menuItem(common_local_url('doc', array('title' => 'about')),
615 $this->menuItem(common_local_url('doc', array('title' => 'faq')),
617 $this->menuItem(common_local_url('doc', array('title' => 'privacy')),
619 $this->menuItem(common_local_url('doc', array('title' => 'source')),
621 $this->menuItem(common_local_url('doc', array('title' => 'contact')),
623 Event::handle('EndSecondaryNav', array($this));
625 $this->elementEnd('ul');
626 $this->elementEnd('dd');
627 $this->elementEnd('dl');
635 function showLicenses()
637 $this->elementStart('dl', array('id' => 'licenses'));
638 $this->showLaconicaLicense();
639 $this->showContentLicense();
640 $this->elementEnd('dl');
644 * Show Laconica license.
648 function showLaconicaLicense()
650 $this->element('dt', array('id' => 'site_laconica_license'), _('Laconica software license'));
651 $this->elementStart('dd', null);
652 if (common_config('site', 'broughtby')) {
653 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
655 $instr = _('**%%site.name%%** is a microblogging service. ');
657 $instr .= sprintf(_('It runs the [Laconica](http://laconi.ca/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), LACONICA_VERSION);
658 $output = common_markup_to_html($instr);
660 $this->elementEnd('dd');
665 * Show content license.
669 function showContentLicense()
671 $this->element('dt', array('id' => 'site_content_license'), _('Laconica software license'));
672 $this->elementStart('dd', array('id' => 'site_content_license_cc'));
673 $this->elementStart('p');
674 $this->element('img', array('id' => 'license_cc',
675 'src' => common_config('license', 'image'),
676 'alt' => common_config('license', 'title')));
677 //TODO: This is dirty: i18n
678 $this->text(_('All '.common_config('site', 'name').' content and data are available under the '));
679 $this->element('a', array('class' => 'license',
680 'rel' => 'external license',
681 'href' => common_config('license', 'url')),
682 common_config('license', 'title'));
683 $this->text(_('license.'));
684 $this->elementEnd('p');
685 $this->elementEnd('dd');
689 * Return last modified, if applicable.
693 * @return string last modified http header
695 function lastModified()
697 // For comparison with If-Last-Modified
698 // If not applicable, return null
703 * Return etag, if applicable.
707 * @return string etag http header
715 * Return true if read only.
719 * @return boolean is read only action?
721 function isReadOnly()
727 * Returns query argument or default value if not found
729 * @param string $key requested argument
730 * @param string $def default value to return if $key is not provided
732 * @return boolean is read only action?
734 function arg($key, $def=null)
736 if (array_key_exists($key, $this->args)) {
737 return $this->args[$key];
744 * Returns trimmed query argument or default value if not found
746 * @param string $key requested argument
747 * @param string $def default value to return if $key is not provided
749 * @return boolean is read only action?
751 function trimmed($key, $def=null)
753 $arg = $this->arg($key, $def);
754 return is_string($arg) ? trim($arg) : $arg;
760 * @param array $argarray is ignored since it's now passed in in prepare()
762 * @return boolean is read only action?
764 function handle($argarray=null)
766 $lm = $this->lastModified();
767 $etag = $this->etag();
769 header('ETag: ' . $etag);
772 header('Last-Modified: ' . date(DATE_RFC1123, $lm));
773 $if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
774 if ($if_modified_since) {
775 $ims = strtotime($if_modified_since);
778 $this->_hasEtag($etag, $_SERVER['HTTP_IF_NONE_MATCH'])) {
779 header('HTTP/1.1 304 Not Modified');
780 // Better way to do this?
789 * HasĀ etag? (private)
791 * @param string $etag etag http header
792 * @param string $if_none_match ifNoneMatch http header
796 function _hasEtag($etag, $if_none_match)
798 return ($if_none_match) && in_array($etag, explode(',', $if_none_match));
802 * Boolean understands english (yes, no, true, false)
804 * @param string $key query key we're interested in
805 * @param string $def default value
807 * @return boolean interprets yes/no strings as boolean
809 function boolean($key, $def=false)
811 $arg = strtolower($this->trimmed($key));
815 } else if (in_array($arg, array('true', 'yes', '1'))) {
817 } else if (in_array($arg, array('false', 'no', '0'))) {
827 * @param string $msg error message to display
828 * @param integer $code http error code, 500 by default
833 function serverError($msg, $code=500)
835 $action = $this->trimmed('action');
836 common_debug("Server error '$code' on '$action': $msg", __FILE__);
837 throw new ServerException($msg, $code);
843 * @param string $msg error message to display
844 * @param integer $code http error code, 400 by default
849 function clientError($msg, $code=400)
851 $action = $this->trimmed('action');
852 common_debug("User error '$code' on '$action': $msg", __FILE__);
853 throw new ClientException($msg, $code);
857 * Returns the current URL
859 * @return string current URL
863 $action = $this->trimmed('action');
865 unset($args['action']);
866 foreach (array_keys($_COOKIE) as $cookie) {
867 unset($args[$cookie]);
869 return common_local_url($action, $args);
873 * Generate a menu item
875 * @param string $url menu URL
876 * @param string $text menu name
877 * @param string $title title attribute, null by default
878 * @param boolean $is_selected current menu item, false by default
879 * @param string $id element id, null by default
883 function menuItem($url, $text, $title=null, $is_selected=false, $id=null)
885 // Added @id to li for some control.
886 // XXX: We might want to move this to htmloutputter.php
889 $lattrs['class'] = 'current';
892 (is_null($id)) ? $lattrs : $lattrs['id'] = $id;
894 $this->elementStart('li', $lattrs);
895 $attrs['href'] = $url;
897 $attrs['title'] = $title;
899 $this->element('a', $attrs, $text);
900 $this->elementEnd('li');
904 * Generate pagination links
906 * @param boolean $have_before is there something before?
907 * @param boolean $have_after is there something after?
908 * @param integer $page current page
909 * @param string $action current action
910 * @param array $args rest of query arguments
914 function pagination($have_before, $have_after, $page, $action, $args=null)
916 // Does a little before-after block for next/prev page
917 if ($have_before || $have_after) {
918 $this->elementStart('div', array('class' => 'pagination'));
919 $this->elementStart('dl', null);
920 $this->element('dt', null, _('Pagination'));
921 $this->elementStart('dd', null);
922 $this->elementStart('ul', array('class' => 'nav'));
925 $pargs = array('page' => $page-1);
926 $newargs = $args ? array_merge($args, $pargs) : $pargs;
927 $this->elementStart('li', array('class' => 'nav_prev'));
928 $this->element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'prev'),
930 $this->elementEnd('li');
933 $pargs = array('page' => $page+1);
934 $newargs = $args ? array_merge($args, $pargs) : $pargs;
935 $this->elementStart('li', array('class' => 'nav_next'));
936 $this->element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'next'),
938 $this->elementEnd('li');
940 if ($have_before || $have_after) {
941 $this->elementEnd('ul');
942 $this->elementEnd('dd');
943 $this->elementEnd('dl');
944 $this->elementEnd('div');
949 * An array of feeds for this action.
951 * Returns an array of potential feeds for this action.
953 * @return array Feed object to show in head and links