Official Addons for the Friendica Communications Platform. (please note that this is a clone of the repository at github, issues are handled there)
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<?php
/**
* Name: Show More
* Description: Collapse posts
* Version: 1.0
* Author: Michael Vogel <ike@piratenpartei.de>
* based upon NSFW from Mike Macgirvin <http://macgirvin.com/profile/mike>
*
*/
use Friendica\Core\Hook;
use Friendica\DI;
use Friendica\Util\Strings;
function showmore_install()
{
Hook::register('prepare_body', 'addon/showmore/showmore.php', 'showmore_prepare_body');
Hook::register('addon_settings', 'addon/showmore/showmore.php', 'showmore_addon_settings');
Hook::register('addon_settings_post', 'addon/showmore/showmore.php', 'showmore_addon_settings_post');
}
function showmore_addon_settings(&$a, &$s)
{
if (!local_user()) {
return;
}
/* Add our stylesheet to the page so we can make our settings look nice */
DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.DI::baseUrl()->get().'/addon/showmore/showmore.css'.'" media="all"/>'."\r\n";
$enable_checked = (intval(DI::pConfig()->get(local_user(), 'showmore', 'disable')) ? '' : ' checked="checked"');
$chars = DI::pConfig()->get(local_user(), 'showmore', 'chars', 1100);
$s .= '<span id="settings_showmore_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
$s .= '<h3>' . DI::l10n()->t('"Show more" Settings').'</h3>';
$s .= '</span>';
$s .= '<div id="settings_showmore_expanded" class="settings-block" style="display: none;">';
$s .= '<span class="fakelink" onclick="openClose(\'settings_showmore_expanded\'); openClose(\'settings_showmore_inflated\');">';
$s .= '<h3>' . DI::l10n()->t('"Show more" Settings').'</h3>';
$s .= '</span>';
$s .= '<div id="showmore-wrapper">';
$s .= '<label id="showmore-enable-label" for="showmore-enable">'.DI::l10n()->t('Enable Show More').'</label>';
$s .= '<input id="showmore-enable" type="checkbox" name="showmore-enable" value="1"'.$enable_checked.' />';
$s .= '<div class="clear"></div>';
$s .= '<label id="showmore-label" for="showmore-chars">'.DI::l10n()->t('Cutting posts after how much characters').' </label>';
$s .= '<input id="showmore-words" type="text" name="showmore-chars" value="'.$chars.'" />';
$s .= '</div><div class="clear"></div>';
$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>';
// $s .= '<div class="showmore-desc">' . DI::l10n()->t('Use /expression/ to provide regular expressions') . '</div>';
$s .= '</div>';
return;
}
function showmore_addon_settings_post(&$a, &$b)
{
if (!local_user()) {
return;
}
if (!empty($_POST['showmore-submit'])) {
DI::pConfig()->set(local_user(), 'showmore', 'chars', trim($_POST['showmore-chars']));
$enable = (!empty($_POST['showmore-enable']) ? intval($_POST['showmore-enable']) : 0);
$disable = 1-$enable;
DI::pConfig()->set(local_user(), 'showmore', 'disable', $disable);
}
}
function get_body_length($body)
{
$string = trim($body);
// DomDocument doesn't like empty strings
if (!strlen($string)) {
return 0;
}
// We need to get rid of hidden tags (display: none)
// Get rid of the warning. It would be better to have some valid html as input
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xpath = new DOMXPath($doc);
/*
* Checking any possible syntax of the style attribute with xpath is impossible
* So we just get any element with a style attribute, and check them with a regexp
*/
$xr = $xpath->query('//*[@style]');
foreach ($xr as $node) {
if (preg_match('/.*display: *none *;.*/',$node->getAttribute('style'))) {
// Hidden, remove it from its parent
$node->parentNode->removeChild($node);
}
}
// Now we can get the body of our HTML DomDocument, it contains only what is visible
$string = $doc->saveHTML();
$string = strip_tags($string);
return strlen($string);
}
function showmore_prepare_body(\Friendica\App $a, &$hook_data)
{
// No combination with content filters
if (!empty($hook_data['filter_reasons'])) {
return;
}
if (DI::pConfig()->get(local_user(), 'showmore', 'disable')) {
return;
}
$chars = (int) DI::pConfig()->get(local_user(), 'showmore', 'chars', 1100);
if (get_body_length($hook_data['html']) > $chars) {
$found = true;
$shortened = trim(showmore_cutitem($hook_data['html'], $chars)) . "...";
} else {
$found = false;
}
if ($found) {
$rnd = Strings::getRandomHex(8);
$hook_data['html'] = '<span id="showmore-teaser-' . $rnd . '" class="showmore-teaser" style="display: block;" aria-hidden="true" dir="auto">' . $shortened . " " .
'<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>' .
'<div id="showmore-' . $rnd . '" class="showmore-content" style="display: none;" aria-hidden="false" dir="auto">' . $hook_data['html'] . '</div>';
}
}
function showmore_cutitem($text, $limit)
{
$text = trim($text);
$text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
$text = substr($text, 0, $limit);
$pos1 = strrpos($text, "<");
$pos2 = strrpos($text, ">");
$pos3 = strrpos($text, "&");
$pos4 = strrpos($text, ";");
if ($pos1 > $pos3) {
if ($pos1 > $pos2)
$text = substr($text, 0, $pos1);
} else {
if ($pos3 > $pos4)
$text = substr($text, 0, $pos3);
}
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
$doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
@$doc->loadHTML($doctype."<html><body>".$text."</body></html>");
$text = $doc->saveHTML();
$text = str_replace(["<html><body>", "</body></html>", $doctype], ["", "", ""], $text);
return $text;
}