widgets.php

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<?php
$num_columns = (int) elgg_extract('num_columns', $vars, 3);
$show_add_widgets = elgg_extract('show_add_widgets', $vars, true);
$show_access = elgg_extract('show_access', $vars, true);
$owner_guid = (int) elgg_extract('owner_guid', $vars);

$page_owner = elgg_get_page_owner_entity();
if ($owner_guid) {
    $owner = get_entity($owner_guid);
} else {
    $owner = $page_owner;
}

if (!$owner instanceof \ElggEntity) {
    return;
}

$context = elgg_get_context();
if (elgg_is_empty($context)) {
    return;
}

elgg_require_js('elgg/widgets');

// Underlying views and functions assume that the page owner is the owner of the widgets
if (empty($page_owner) || $owner->guid != $page_owner->guid) {
    elgg_set_page_owner_guid($owner->guid);
}

$widgets = elgg_get_widgets($owner->guid, $context);

$result = '';
$no_widgets = elgg_extract('no_widgets', $vars);
if (empty($widgets) && !empty($no_widgets)) {
    if ($no_widgets instanceof \Closure) {
        echo $no_widgets();
    } else {
        $result .= $no_widgets;
    }
}

if ($show_add_widgets && elgg_can_edit_widget_layout($context)) {
    $result .= elgg_view('page/layouts/widgets/add_button', $vars);
}

// push context after the add_button as add button uses current context
elgg_push_context('widgets');

if (!empty($widgets)) {
    $widget_types = elgg_get_widget_types([
        'context' => $context,
        'container' => $owner,
    ]);
}

// move hidden columns widgets to last visible column
if (!isset($widgets[$num_columns])) {
    $widgets[$num_columns] = [];
}

foreach ($widgets as $index => $column_widgets) {
    if ($index <= $num_columns) {
        continue;
    }
    
    // append widgets to last column and retain order
    foreach ($column_widgets as $column_widget) {
        $widgets[$num_columns][] = $column_widget;
    }
    
    unset($widgets[$index]);
}

$grid = '';
for ($column_index = 1; $column_index <= $num_columns; $column_index++) {
    $column_widgets = (array) elgg_extract($column_index, $widgets, []);
    
    $widgets_content = '';
    foreach ($column_widgets as $widget) {
        if (!array_key_exists($widget->handler, $widget_types)) {
            continue;
        }
        
        $widgets_content .= elgg_view_entity($widget, [
            'show_access' => $show_access,
            'register_rss_link' => false,
        ]);
    }
    
    $grid .= elgg_format_element('div', [
        'id' => "elgg-widget-col-{$column_index}",
        'class' => [
            'elgg-widgets',
        ],
        
    ], $widgets_content);
}

$result .= elgg_format_element('div', [
    'class' => 'elgg-widgets-grid',
], $grid);

elgg_pop_context();

echo elgg_format_element('div', [
    'class' => [
        'elgg-layout-widgets',
        "elgg-layout-widgets-{$context}",
    ],
    'data-page-owner-guid' => $owner->guid,
], $result);

// Restore original page owner
if (empty($page_owner)) {
    elgg_set_page_owner_guid(0);
} elseif ($owner->guid !== $page_owner->guid) {
    elgg_set_page_owner_guid($page_owner->guid);
}