default_widgets.php

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<?php
elgg_push_context('default_widgets');
$widget_context = get_input('widget_context');
$list = elgg_trigger_plugin_hook('get_list', 'default_widgets', null, []);

// default to something if we can
if (!$widget_context && $list) {
    $widget_context = $list[0]['widget_context'];
}

$current_info = null;
$tabs = [];
foreach ($list as $info) {
    $selected = false;
    if ($widget_context == $info['widget_context']) {
        $selected = true;
        $current_info = $info;
    }

    $tabs[] = [
        'text' => $info['name'],
        'href' => "admin/configure_utilities/default_widgets?widget_context={$info['widget_context']}",
        'selected' => $selected,
    ];
}

$tabs_vars = [
    'tabs' => $tabs
];

echo elgg_view('navigation/tabs', $tabs_vars);

echo elgg_view('output/longtext', ['value' => elgg_echo('admin:default_widgets:instructions')]);

if (!$current_info) {
    $content = elgg_echo('admin:default_widgets:unknown_type');
} else {
    // default widgets are owned and saved to the site.
    elgg_set_page_owner_guid(1);
    elgg_push_context($current_info['widget_context']);

    $content = elgg_view_layout('widgets', [
        'num_columns' => $current_info['widget_columns'],
    ]);
    elgg_pop_context();
}
elgg_pop_context();

echo $content;