--- /dev/null
+<?php
+
+/**
+ * @file
+ * Controls the placement of blocks from all pages.
+ */
+
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\Url;
+
+/**
+ * Implements hook_help().
+ */
+function block_place_help($route_name, RouteMatchInterface $route_match) {
+ switch ($route_name) {
+ case 'help.page.block_place':
+ $output = '<h3>' . t('About') . '</h3>';
+ $output .= '<p>' . t('The Place Blocks module allows you to place blocks from every page. For more information, see the <a href=":blocks-documentation">online documentation for the Place Blocks module</a>.', [':blocks-documentation' => 'https://www.drupal.org/documentation/modules/block_place/']) . '</p>';
+ $output .= '<h3>' . t('Uses') . '</h3>';
+ $output .= '<p>' . t('Block placement is specific to each theme on your site. This module allows you to place blocks in the context of your content pages.') . '</p>';
+ return $output;
+ }
+}
+
+/**
+ * Implements hook_toolbar().
+ */
+function block_place_toolbar() {
+ // Link to the current page with a query parameter.
+ $query = \Drupal::request()->query->all();
+ $wrapper_class = '';
+ $status_class = '';
+ $description = '';
+ if (isset($query['block-place'])) {
+ $status_class = 'active';
+ $wrapper_class = 'is-active';
+ $description = t('Exit Place block mode.');
+ unset($query['block-place']);
+ unset($query['destination']);
+ }
+ else {
+ $status_class = 'inactive';
+ $description = t('Show regions to Place blocks.');
+ $query['block-place'] = '1';
+ // Setting destination is both a work-around for the toolbar "Back to site"
+ // link in escapeAdmin.js and used for the destination after picking a
+ // block.
+ $query['destination'] = Url::fromRoute('<current>')->toString();
+ }
+
+ // Remove on Admin routes.
+ $admin_route = \Drupal::service('router.admin_context')->isAdminRoute();
+ // Remove on Block Demo page.
+ $admin_demo = \Drupal::routeMatch()->getRouteName() === 'block.admin_demo';
+ $access = (\Drupal::currentUser()->hasPermission('administer blocks') && !$admin_route && !$admin_demo);
+
+ // The 'Place Block' tab is a simple link, with no corresponding tray.
+ $items['block_place'] = [
+ '#cache' => [
+ 'contexts' => ['user.permissions', 'url.query_args'],
+ ],
+ '#type' => 'toolbar_item',
+ 'tab' => [
+ '#access' => $access,
+ '#type' => 'link',
+ '#title' => t('Place block'),
+ '#url' => Url::fromRoute('<current>', [], ['query' => $query]),
+ '#attributes' => [
+ 'title' => $description,
+ 'class' => ['toolbar-icon', 'toolbar-icon-place-block-' . $status_class],
+ ],
+ ],
+ '#wrapper_attributes' => [
+ 'class' => ['toolbar-tab', 'block-place-toolbar-tab', $wrapper_class],
+ ],
+ '#weight' => 100,
+ '#attached' => [
+ 'library' => [
+ 'block_place/drupal.block_place.icons',
+ ],
+ ],
+ ];
+ return $items;
+}