default_widgets.php

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<?php
$object = elgg_get_entities(array(
    'type' => 'object',
    'subtype' => 'moddefaultwidgets',
    'limit' => 1,
));

if ($object) {
    echo elgg_view('output/url', array(
        'text' => elgg_echo('upgrade'),
        'href' => 'action/widgets/upgrade',
        'is_action' => true,
        'is_trusted' => true,
        'class' => 'elgg_button elgg-button-submit',
        'title' => 'Upgrade your default widgets to work on Elgg 1.8',
    ));
}

elgg_push_context('default_widgets');
$widget_context = get_input('widget_context');
$list = elgg_trigger_plugin_hook('get_list', 'default_widgets', null, array());

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

$current_info = null;
$tabs = array();
foreach ($list as $info) {
    $url = "admin/appearance/default_widgets?widget_context={$info['widget_context']}";
    $selected = false;
    if ($widget_context == $info['widget_context']) {
        $selected = true;
        $current_info = $info;
    }

    $tabs[] = array(
        'title' => $info['name'],
        'url' => $url,
        'selected' => $selected
    );
}

$tabs_vars = array(
    'tabs' => $tabs
);

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

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

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

    $default_widgets_input = elgg_view('input/hidden', array(
        'name' => 'default_widgets',
        'value' => 1
    ));

    $params = array(
        'content' => $default_widgets_input,
        'num_columns' => $current_info['widget_columns'],
    );

    $content = elgg_view_layout('widgets', $params);
    elgg_pop_context();
}
elgg_pop_context();

echo $content;