Allow completely disabling/hiding default templates

Feature Description

A user has requested a way to customize the default view for the Templates dashboard. Currently, the Templates dashboard loads all templates, but this feature request would allow a customized / filtered view of the templates on load.

Alternatives Considered

Additional Context

related support topic: https://wordpress.org/support/topic/remove-default-story-and-page-templates/

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Acceptance Criteria

• Pass'canViewDefaultTemplates' => true to app in \Google\Web_Stories\Admin\Editor::get_editor_settings() and \Google\Web_Stories\Admin\Dashboard::get_dashboard_settings()
• In dashboard, hide “Explore Templates” from menu if user does not have capability
• In dashboard, prevent direct access to templates if user does not have capability (feasible?)
• In editor, hide “Default Templates” from the page templates tab, hide the selection dropdown, and always show the custom templates.

This will allow devs to disable access to default templates via the web_stories_editor_settings and web_stories_dashboard_settings filters.

Alternative:

Use something like current_user_can( 'web_stories_view_default_templates' ) instead, which allows devs to filter this via map_meta_cap.

It’s a bit more verbose which helps a lot with comprehension.

We could even do the same for the showMedia3p config.

[lucymtc]

@swissspidy Yes, that sounds good. Thanks!

[swissspidy]

@lucymtc ICYMI, this is how the default templates can now be disabled on the dashboard and in the editor:

function gh_10124_change_get_settings( array $settings ): array {
	$settings['canViewDefaultTemplates'] = false;

	return $settings;
}
add_filter( 'web_stories_editor_settings', 'gh_10124_change_get_settings' );
add_filter( 'web_stories_dashboard_settings', 'gh_10124_change_get_settings' );

Available since 1.17.0