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What it Does

This plugin replaces the video embed with a facade and fetches additional image sizes which are more responsive. This all helps with the initial loading time of pages using the core/embed. It also replaces the default youtube URL with a no-cookie alternative.

How it Works

This plugin filters the core/embed block code to make a few improvements:

1. Replaces the video embed with a facade, in this case a placeholder image
2. Fetches multiple image sizes from the video provider and adds srcset and sizes attributes to the new image element
3. Adds width and height attributes to the image element

Limitations

Currently, only the providers listed below are supported. Even when one of these is used, the URL provided must match a specific format in order to be caught by our filters.

• YouTube
• Vimeo
• Dailymotion

Local Development

Getting Started

This repo is setup to run either with lando by symlinking the dev/public/wp-content/plugins/tribe-embed folder with the project root. To get started make sure you have lando installed and run lando start. You should be able to reach the site at tribe-embed.lndo.site/ and the login username is admin and password is password.

If you need to rebuild the lando environment you will need to delete the ./dev/public folder. Do not use rm -rf ./dev/public. The volume link will delete the root project as well. If your rm command supports it, you can use the -x option to not cross mount points.

Building Plugin

This repo is setup to use the WP CLI dist-archive command. To build the zip file for the make sure you have the dist-archive command package installed and run wp dist-archive . form the root folder. The zip file will be created one folder back form the root folder.

Vimeo

In order to make Vimeo provider thumbs work correctly create an access token https://help.vimeo.com/hc/en-us/articles/12427789081745-How-to-generate-a-personal-access-token Use Tribe Embeds Settings page to store token via DB or set VIMEO_ACCESS_TOKEN in you wp-config.php

Hooks (filters & actions)

These are the public extension points intended for themes/plugins to customize behavior. Names and arguments are considered part of the API.

Filters

tribe-embeds_allowed_provider_hosts

Expand or restrict the whitelist of hostnames that can be handled by built-in or custom providers.

• Signature: apply_filters( 'tribe-embeds_allowed_provider_hosts', $allowed_hosts, $host )
• Args:
  • $allowed_hosts — array of allowed host strings (e.g. ['youtube.com', 'youtu.be', 'vimeo.com', 'dailymotion.com'])
  • $host — the currently detected host
• Return: Modified array of allowed hosts.
• Example:

  add_filter( 'tribe-embeds_allowed_provider_hosts', function ( array $hosts ) {
    $hosts[] = 'videos.example.com';
    return $hosts;
  }, 10 );

tribe_embeds_video_provider

Allow short-circuit with a ready-made provider instance

• Signature: apply_filters( 'tribe_embeds_video_provider', null, $video_url_data, $block )

• Args:

  • null|<Provider object> — if object provided resolves immediately and return provided object
  • $video_url_data — embed video ulr
  • $block — current embed block data

• Return: null or provided provider class

• Example:

  add_filter( 'tribe_embeds_video_provider', function ( $obj, $video_url_data, $block ) {
    // Note: $video_url_data has parsed video url. Provider accepts url string 
    $provider = new CustomProvider( $video_url );
  
    return $provider;
  }, 10 );

tribe_embeds_allowed_provider_hosts_<slug>

Adjust allowed hosts for provider

• Signature: apply_filters( 'tribe_embeds_allowed_provider_hosts_' . $slug, $base, $provider_class );
• Args:
  • $base — list of allowed hosts
  • $provider_class — current provider class

tribe_embeds_allowed_provider_hosts

Adjust allowed hosts for provider

• Signature: apply_filters( 'tribe_embeds_allowed_provider_hosts', $by_provider, $provider_class );
• Args:
  • $by_provider — List of hosts returned from tribe_embeds_allowed_provider_hosts_<slug>
  • $provider_class — current provider class

tribe_embeds_image_sizes_<slug>

Get image sizes for a provider

• Signature: apply_filters( 'tribe_embeds_image_sizes_' . $slug, $base, $provider_class );
• Args:
  • $base — list of image sizes
  • $provider_class — current provider class

tribe_embeds_image_sizes

Get image sizes for a provider

• Signature: apply_filters( 'tribe_embeds_image_sizes', $by_provider, $provider_class );
• Args:
  • $by_provider — list of image sizes tribe_embeds_image_sizes
  • $provider_class — current provider class

tribe_embeds_provider_classes

Allow external override of provider class list

• Signature: apply_filters( 'tribe_embeds_provider_classes', $provider_classes ?: $defaults );
• Args:
  • $provider_classes — list of existing providers classes

tribe_embed_<video-provider>_video_thumbnail_url

Allows adjusting image data for each provider. Use slug instead of <video-provider> e.g tribe_embed_wistia_video_thumbnail_url

• Signature: apply_filters( 'tribe_embed_wistia_video_thumbnail_url', $image_data, $video_id )
• Args:
  • $image_data — Thumbnail image data
  • $video_id — current video id
• Return: Video thumbnail image data.

tribe_embeds_facade_html

Fires an action with the new block markup attached.

• Signature: apply_filters( 'tribe_embeds_facade_html', $facade_html, $provider, $block, $html )
• Args:
  • $facade_html — Resulting html
  • $provider — provider class
  • $block — current block
  • $html — original block html
• Return: Embed block markup