4 * Description: Collapse posts
6 * Author: Michael Vogel <ike@piratenpartei.de>
7 * based upon NSFW from Mike Macgirvin <http://macgirvin.com/profile/mike>
10 use Friendica\Core\Hook;
12 use Friendica\Util\Strings;
14 function showmore_install()
16 Hook::register('prepare_body', 'addon/showmore/showmore.php', 'showmore_prepare_body');
17 Hook::register('addon_settings', 'addon/showmore/showmore.php', 'showmore_addon_settings');
18 Hook::register('addon_settings_post', 'addon/showmore/showmore.php', 'showmore_addon_settings_post');
21 function showmore_uninstall()
23 Hook::unregister('prepare_body', 'addon/showmore/showmore.php', 'showmore_prepare_body');
24 Hook::unregister('addon_settings', 'addon/showmore/showmore.php', 'showmore_addon_settings');
25 Hook::unregister('addon_settings_post', 'addon/showmore/showmore.php', 'showmore_addon_settings_post');
28 function showmore_addon_settings(&$a, &$s)
34 /* Add our stylesheet to the page so we can make our settings look nice */
36 DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.DI::baseUrl()->get().'/addon/showmore/showmore.css'.'" media="all"/>'."\r\n";
38 $enable_checked = (intval(DI::pConfig()->get(local_user(), 'showmore', 'disable')) ? '' : ' checked="checked"');
39 $chars = DI::pConfig()->get(local_user(), 'showmore', 'chars', 1100);
41 $s .= '<span id="settings_showmore_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
42 $s .= '<h3>' . DI::l10n()->t('"Show more" Settings').'</h3>';
44 $s .= '<div id="settings_showmore_expanded" class="settings-block" style="display: none;">';
45 $s .= '<span class="fakelink" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
46 $s .= '<h3>' . DI::l10n()->t('"Show more" Settings').'</h3>';
49 $s .= '<div id="showmore-wrapper">';
51 $s .= '<label id="showmore-enable-label" for="showmore-enable">'.DI::l10n()->t('Enable Show More').'</label>';
52 $s .= '<input id="showmore-enable" type="checkbox" name="showmore-enable" value="1"'.$enable_checked.' />';
53 $s .= '<div class="clear"></div>';
54 $s .= '<label id="showmore-label" for="showmore-chars">'.DI::l10n()->t('Cutting posts after how much characters').' </label>';
55 $s .= '<input id="showmore-words" type="text" name="showmore-chars" value="'.$chars.'" />';
56 $s .= '</div><div class="clear"></div>';
58 $s .= '<div class="settings-submit-wrapper" ><input type="submit" id="showmore-submit" name="showmore-submit" class="settings-submit" value="' . DI::l10n()->t('Save Settings') . '" /></div>';
59 // $s .= '<div class="showmore-desc">' . DI::l10n()->t('Use /expression/ to provide regular expressions') . '</div>';
65 function showmore_addon_settings_post(&$a, &$b)
71 if (!empty($_POST['showmore-submit'])) {
72 DI::pConfig()->set(local_user(), 'showmore', 'chars', trim($_POST['showmore-chars']));
73 $enable = (!empty($_POST['showmore-enable']) ? intval($_POST['showmore-enable']) : 0);
75 DI::pConfig()->set(local_user(), 'showmore', 'disable', $disable);
76 info(DI::l10n()->t('Show More Settings saved.') . EOL);
80 function get_body_length($body)
82 $string = trim($body);
84 // DomDocument doesn't like empty strings
85 if (!strlen($string)) {
89 // We need to get rid of hidden tags (display: none)
91 // Get rid of the warning. It would be better to have some valid html as input
92 $dom = @DomDocument::loadHTML($body);
93 $xpath = new DOMXPath($dom);
96 * Checking any possible syntax of the style attribute with xpath is impossible
97 * So we just get any element with a style attribute, and check them with a regexp
99 $xr = $xpath->query('//*[@style]');
100 foreach ($xr as $node) {
101 if (preg_match('/.*display: *none *;.*/',$node->getAttribute('style'))) {
102 // Hidden, remove it from its parent
103 $node->parentNode->removeChild($node);
106 // Now we can get the body of our HTML DomDocument, it contains only what is visible
107 $string = $dom->saveHTML();
109 $string = strip_tags($string);
110 return strlen($string);
113 function showmore_prepare_body(\Friendica\App $a, &$hook_data)
115 // No combination with content filters
116 if (!empty($hook_data['filter_reasons'])) {
120 if (DI::pConfig()->get(local_user(), 'showmore', 'disable')) {
124 $chars = (int) DI::pConfig()->get(local_user(), 'showmore', 'chars', 1100);
126 if (get_body_length($hook_data['html']) > $chars) {
128 $shortened = trim(showmore_cutitem($hook_data['html'], $chars)) . "...";
134 $rnd = Strings::getRandomHex(8);
135 $hook_data['html'] = '<span id="showmore-teaser-' . $rnd . '" class="showmore-teaser" style="display: block;" aria-hidden="true">' . $shortened . " " .
136 '<span id="showmore-wrap-' . $rnd . '" style="white-space:nowrap;" class="showmore-wrap fakelink" onclick="openClose(\'showmore-' . $rnd . '\'); openClose(\'showmore-teaser-' . $rnd . '\');" >' . DI::l10n()->t('show more') . '</span></span>' .
137 '<div id="showmore-' . $rnd . '" class="showmore-content" style="display: none;" aria-hidden="false">' . $hook_data['html'] . '</div>';
141 function showmore_cutitem($text, $limit)
145 $text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
147 $text = substr($text, 0, $limit);
149 $pos1 = strrpos($text, "<");
150 $pos2 = strrpos($text, ">");
151 $pos3 = strrpos($text, "&");
152 $pos4 = strrpos($text, ";");
156 $text = substr($text, 0, $pos1);
159 $text = substr($text, 0, $pos3);
162 $doc = new DOMDocument();
163 $doc->preserveWhiteSpace = false;
165 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
166 @$doc->loadHTML($doctype."<html><body>".$text."</body></html>");
168 $text = $doc->saveHTML();
169 $text = str_replace(["<html><body>", "</body></html>", $doctype], ["", "", ""], $text);