message.php

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<?php
$type = elgg_extract('type', $vars, false);
$title = elgg_extract('title', $vars);
$body = elgg_extract('body', $vars, '');

if (empty($title) && empty($body)) {
    return;
}

$attrs = [
    'class' => elgg_extract_class($vars, 'elgg-message'),
];

if ($type) {
    $attrs['class'][] = "elgg-message-$type";
}

$default_icons = [
    'error' => 'exclamation-circle',
    'help' => 'question-circle',
    'notice' => 'info-circle',
    'warning' => 'exclamation-triangle',
    'success' => 'check-circle',
];

$default_icon_name = elgg_extract($type, $default_icons);
$icon_name = elgg_extract('icon_name', $vars, $default_icon_name);

if (is_null($title) && !empty($type) && elgg_language_key_exists("messages:title:{$type}")) {
    $title = elgg_echo("messages:title:{$type}");
}

$header = '';
if (!empty($title) && !empty($icon_name)) {
    $header .= elgg_view_icon($icon_name, ['class' => 'elgg-message-icon']);
}

if (!empty($title)) {
    $header .= elgg_format_element('span', ['class' => 'elgg-message-title'], $title);
}

if (!empty($header)) {
    $header = elgg_format_element('div', ['class' => 'elgg-head'], $header);
}

if (!empty($body)) {
    $body = elgg_format_element('div', ['class' => 'elgg-body'], $body);
}

$contents = elgg_format_element('div', ['class' => 'elgg-inner'], $header . $body);

echo elgg_format_element('div', $attrs, $contents);