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;
11 use Friendica\Core\L10n;
12 use Friendica\Core\PConfig;
14 use Friendica\Util\Strings;
16 function showmore_install()
18 Hook::register('prepare_body', 'addon/showmore/showmore.php', 'showmore_prepare_body');
19 Hook::register('addon_settings', 'addon/showmore/showmore.php', 'showmore_addon_settings');
20 Hook::register('addon_settings_post', 'addon/showmore/showmore.php', 'showmore_addon_settings_post');
23 function showmore_uninstall()
25 Hook::unregister('prepare_body', 'addon/showmore/showmore.php', 'showmore_prepare_body');
26 Hook::unregister('addon_settings', 'addon/showmore/showmore.php', 'showmore_addon_settings');
27 Hook::unregister('addon_settings_post', 'addon/showmore/showmore.php', 'showmore_addon_settings_post');
30 function showmore_addon_settings(&$a, &$s)
36 /* Add our stylesheet to the page so we can make our settings look nice */
38 $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.DI::baseUrl()->get().'/addon/showmore/showmore.css'.'" media="all"/>'."\r\n";
40 $enable_checked = (intval(PConfig::get(local_user(), 'showmore', 'disable')) ? '' : ' checked="checked"');
41 $chars = PConfig::get(local_user(), 'showmore', 'chars', 1100);
43 $s .= '<span id="settings_showmore_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
44 $s .= '<h3>' . L10n::t('"Show more" Settings').'</h3>';
46 $s .= '<div id="settings_showmore_expanded" class="settings-block" style="display: none;">';
47 $s .= '<span class="fakelink" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
48 $s .= '<h3>' . L10n::t('"Show more" Settings').'</h3>';
51 $s .= '<div id="showmore-wrapper">';
53 $s .= '<label id="showmore-enable-label" for="showmore-enable">'.L10n::t('Enable Show More').'</label>';
54 $s .= '<input id="showmore-enable" type="checkbox" name="showmore-enable" value="1"'.$enable_checked.' />';
55 $s .= '<div class="clear"></div>';
56 $s .= '<label id="showmore-label" for="showmore-chars">'.L10n::t('Cutting posts after how much characters').' </label>';
57 $s .= '<input id="showmore-words" type="text" name="showmore-chars" value="'.$chars.'" />';
58 $s .= '</div><div class="clear"></div>';
60 $s .= '<div class="settings-submit-wrapper" ><input type="submit" id="showmore-submit" name="showmore-submit" class="settings-submit" value="' . L10n::t('Save Settings') . '" /></div>';
61 // $s .= '<div class="showmore-desc">' . L10n::t('Use /expression/ to provide regular expressions') . '</div>';
67 function showmore_addon_settings_post(&$a, &$b)
73 if (!empty($_POST['showmore-submit'])) {
74 PConfig::set(local_user(), 'showmore', 'chars', trim($_POST['showmore-chars']));
75 $enable = (!empty($_POST['showmore-enable']) ? intval($_POST['showmore-enable']) : 0);
77 PConfig::set(local_user(), 'showmore', 'disable', $disable);
78 info(L10n::t('Show More Settings saved.') . EOL);
82 function get_body_length($body)
84 $string = trim($body);
86 // DomDocument doesn't like empty strings
87 if (!strlen($string)) {
91 // We need to get rid of hidden tags (display: none)
93 // Get rid of the warning. It would be better to have some valid html as input
94 $dom = @DomDocument::loadHTML($body);
95 $xpath = new DOMXPath($dom);
98 * Checking any possible syntax of the style attribute with xpath is impossible
99 * So we just get any element with a style attribute, and check them with a regexp
101 $xr = $xpath->query('//*[@style]');
102 foreach ($xr as $node) {
103 if (preg_match('/.*display: *none *;.*/',$node->getAttribute('style'))) {
104 // Hidden, remove it from its parent
105 $node->parentNode->removeChild($node);
108 // Now we can get the body of our HTML DomDocument, it contains only what is visible
109 $string = $dom->saveHTML();
111 $string = strip_tags($string);
112 return strlen($string);
115 function showmore_prepare_body(\Friendica\App $a, &$hook_data)
117 // No combination with content filters
118 if (!empty($hook_data['filter_reasons'])) {
122 if (PConfig::get(local_user(), 'showmore', 'disable')) {
126 $chars = (int) PConfig::get(local_user(), 'showmore', 'chars', 1100);
128 if (get_body_length($hook_data['html']) > $chars) {
130 $shortened = trim(showmore_cutitem($hook_data['html'], $chars)) . "...";
136 $rnd = Strings::getRandomHex(8);
137 $hook_data['html'] = '<span id="showmore-teaser-' . $rnd . '" class="showmore-teaser" style="display: block;">' . $shortened . " " .
138 '<span id="showmore-wrap-' . $rnd . '" style="white-space:nowrap;" class="showmore-wrap fakelink" onclick="openClose(\'showmore-' . $rnd . '\'); openClose(\'showmore-teaser-' . $rnd . '\');" >' . L10n::t('show more') . '</span></span>' .
139 '<div id="showmore-' . $rnd . '" class="showmore-content" style="display: none;">' . $hook_data['html'] . '</div>';
143 function showmore_cutitem($text, $limit)
147 $text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
149 $text = substr($text, 0, $limit);
151 $pos1 = strrpos($text, "<");
152 $pos2 = strrpos($text, ">");
153 $pos3 = strrpos($text, "&");
154 $pos4 = strrpos($text, ";");
158 $text = substr($text, 0, $pos1);
161 $text = substr($text, 0, $pos3);
164 $doc = new DOMDocument();
165 $doc->preserveWhiteSpace = false;
167 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
168 @$doc->loadHTML($doctype."<html><body>".$text."</body></html>");
170 $text = $doc->saveHTML();
171 $text = str_replace(["<html><body>", "</body></html>", $doctype], ["", "", ""], $text);