Convert ViewsPager plugin discovery to attributes

Appears to have test failures

Why was it tagged for tests?

In trying to figure out why the test was failing I notices that two of the plugins do not declare a theme. That means that 'register_theme' will be TRUE which makes no sense because there is no theme declared in the plugin. Therefore, this adds register_theme: FALSE, for those two plugins.

Great investigative work @quietone!

I'm seeing that fixed all the tests and searched the repo and all 4 instances of @ViewsPager have been replaced.

I made 1 small nitpicky change adding "class-" to the driver.

$theme has the wrong default value - causing the problems with register theme.

Here are the current definitions for none and some... let's not change register_theme. It'll be work once the attribute as a theme value set to NULL rather than an empty string. Which makes more sense anyways.

    "none" => [
      "parent" => "parent",
      "plugin_type" => "pager",
      "register_theme" => true,
      "title" => Drupal\Core\StringTranslation\TranslatableMarkup {#7635},
      "short_title" => "",
      "help" => Drupal\Core\StringTranslation\TranslatableMarkup {#7645},
      "id" => "none",
      "display_types" => [
        "basic",
      ],
      "class" => "Drupal\views\Plugin\views\pager\None",
      "provider" => "views",
    ],
    "some" => [
      "parent" => "parent",
      "plugin_type" => "pager",
      "register_theme" => true,
      "title" => Drupal\Core\StringTranslation\TranslatableMarkup {#7647},
      "short_title" => "",
      "help" => Drupal\Core\StringTranslation\TranslatableMarkup {#7648},
      "id" => "some",
      "display_types" => [
        "basic",
      ],
      "class" => "Drupal\views\Plugin\views\pager\Some",
      "provider" => "views",
    ],

@alexpott, thanks for the changes. I thought I had changed $theme to NULL and tested before I went on holiday. I guess I was wrong about that. Maybe I should have tried again.

Changes made, tests are passing. So back to needs review.

So " vs ' I don't think there is a standard for that right?

I see for example #[ViewsRow are using " but #[ViewsArgument used '

Most appear to be using " but if a follow up is needed to fix #[ViewsArgument then we should maybe make it inline too right?

#[ViewsArgument("node_type")]

vs

#[ViewsArgument(
  id: 'node_type',
)]

But changes here look good.

Committed and pushed 0eca710d8b to 11.x and 95bfc525bd to 10.3.x. Thanks!

diff --git a/core/modules/views/src/Attribute/ViewsPager.php b/core/modules/views/src/Attribute/ViewsPager.php
index 0c222c4e03..2a19944ced 100644
--- a/core/modules/views/src/Attribute/ViewsPager.php
+++ b/core/modules/views/src/Attribute/ViewsPager.php
@@ -20,14 +20,14 @@ class ViewsPager extends Plugin {
    *
    * @param string $id
    *   The plugin ID.
-   * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $title
+   * @param \Drupal\Core\StringTranslation\TranslatableMarkup $title
    *   The plugin title used in the views UI.
    * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $short_title
    *   (optional) The short title used in the views UI.
    * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $help
    *   (optional) A short help string; this is displayed in the views UI.
    * @param string|null $theme
-   *   The theme function used to render the pager's output.
+   *   (optional) The theme function used to render the pager's output.
    * @param string[]|null $display_types
    *   (optional) The types of the display this plugin can be used with.
    *   For example the Feed display defines the type 'feed', so only rss style

Fixed on commit.