* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Spacing
* Fix comment
* wc_implode_text_attributes helper function
* register prettyPhoto but don't enqueue. #10721
* Remove lightbox option. #10721
Also registers the prettyPhoto styles instead of enqueueing
* Stip all prettyPhoto related stuff from the templates and tidy up some logic. #10721
* Add flexslider assets #10721
* styling and re-adds `woocommerce_single_product_image_thumbnail_html`. #10721.
* Add zoom functionality. #10721
* Move js to single-product.js. #10721
* styling of the gallery thumbnails when using the `product_page` shortcode. #10721
* Only enable the zoom if the image is large enough. #10721
* Use a 4 column layout by default. #10721
* Make the carousel options filterable. #10721
* rtl styles for gallery. #10721
* Don't zoom on handheld devices. #10721
* markup tweaks in prep for photoswipe
* disable zoom for now
* Add and enqueue photoswipe assets
* add the photoswipe template
* initialise photoswipe - it's alive!
* tidy up js. add title. add separate trigger. #10721
* Move photoswipe functions to single-product.js. #10721
* reactivate the zoom! #10721
* style the photoswipe trigger. #10721
* disable flexslider animation loop. #10721
* js tidy up. #10721
* Fix jshint
* Abstract the product gallery scripts
* Minify
* Fixed conflict with the admin bar
* Photoswipe conflict with admin bar
* Index. #10721
* photoswipe button styles. #10721
* Styling. #10721
* No animation on zoom
* Image width on mobile
* No shadows please. #10721
Looking at you, Twenty Twelve.
* code tidy and add class to placeholder figure. #10721
* simplify rtl query
* photoswipe button styles
* Comma should not be here
* zoom icon #10721
* gallery thumb styles. #10721
* trigger icon. #10721
* Image margins. #10721
* icon hover states. #10721
* Variation handling
* Fix zoom and heights
* Resize after timeout
Fixes#11812
$this->array was only used to return to the user. Comparison was done with $prices_array, which did not contain the version information because it was never saved in the transient.
Closes#10195
cc @claudiosmweb
Since this uses `$this->get_children( true );` it will also hide out of
stock variation attributes if that setting is enabled.
The current method loops through every defined hook in the WordPress
environment (over 400 on one of my tests). This method only checks the 3
filters in question.