Trigger events equivalent to editor:image-edit and editor:image-update in media-image-widget.js

[danielbachhuber]

The wpeditimage TinyMCE plugin has helpful editor:image-edit and editor:image-update events for hooking additional metadata onto the Image object. Here's an example:

wp.media.events.on('editor:image-edit',function(event){
	event.metadata.pinterest_text = event.editor.$(event.image).attr('data-pin-description');
});
wp.media.events.on('editor:image-update',function(event){
	event.editor.$(event.image).attr('data-pin-description', event.metadata.pinterest_text);
});

Although the new Image Widget reuses the image-details frame, it doesn't fire these equivalent events, making integration difficult. It would be helpful if the ImageWidgetControl implemented equivalent events.

[westonruter]

Discovery should be done to see why these events aren't firing.

[mnelson4]

Kinda related: ​https://developer.wordpress.org/reference/hooks/image_send_to_editor/