A Moodle local plugin that helps course editors work with blocks in two ways:

1. Tooltips in the "Add a block" modal — shows a configurable info icon next to each block, so editors immediately understand what a block does before adding it.
2. Student visibility indicator — displays a read-only eye icon on every block while editing a course, telling the editor whether that block is currently visible or hidden for students.

No personal data is stored. Both features are only active for users who can edit blocks (moodle/block:edit), and only while editing mode is turned on.

• One configurable description per installed block plugin.
• An accessible info icon (role="img", aria-label, keyboard focusable) is added next to each block entry in the Add a block popup.
• Descriptions are plain text (PARAM_TEXT) and rendered as Bootstrap tooltips.
• Blocks without a configured description are left untouched.

• A read-only eye icon is shown in each block's control area on course pages.
  • '️ green eye ' visible for students.
  • 🚫 red crossed-out eye ' hidden for students.
• Visibility is computed server-side by reproducing Moodle's rendering-time logic for a representative student (capability checks, page-format match, block_positions flag, and empty-content detection).
• Restricted to course contexts — on /my, dashboards or profiles each user has their own blocks, so a single "what a student sees" answer is not meaningful.

Admin settings — one description field per installed block:

Tooltip shown next to a block in the "Add a block" popup:

Student visibility indicator on course blocks (visible vs hidden):

• Moodle 4.5 (build 2024100700) or later.
• Tested with PHP 8.2.

This plugin is maintained on per-version branches, matching Moodle's own branch naming:

1. Copy the plugin into the local/blocktooltips directory of your Moodle site:

   <moodleroot>/local/blocktooltips
   

2. Log in as an administrator and go to Site administration to trigger the upgrade, or run the CLI upgrade:

   php admin/cli/upgrade.php
   

3. Purge caches if needed (php admin/cli/purge_caches.php).

Go to Site administration ' Plugins ' Local plugins ' Block tooltips.

The settings page lists every installed block (sorted alphabetically by its translated name) with a text area. Enter a short description for each block you want to document. Leave a field empty to show no tooltip for that block.

1. Configure descriptions as explained above.
2. On any page, turn Edit mode on.
3. Open the Add a block popup — an info icon appears next to every block that has a configured description. Hover or focus it to read the tooltip.

1. Open a course and turn Edit mode on.
2. Each block displays an eye icon in its control area indicating whether the block is currently visible or hidden for students.

This plugin does not store any personal data. It implements the Moodle Privacy API null_provider.

The plugin passes the official Moodle validators with no errors or warnings:

phpcs --standard=moodle local/blocktooltips/        # via local_codechecker
php local/moodlecheck/cli/moodlecheck.php --path=local/blocktooltips