Request to Cache ID of Element on node.clone()

[dggtydnk]

I have run into problems when doing a range.cloneContents() to get the selected HTML and the ID's of elements are being stripped out in the call to node.clone( true ), which triggers a false value for cloneID.

I would like to request that the ID be stored in a data attribute (i.e. data-cke-old-id) so that ID is available to developers if needed for any other processing of the document fragment returned from cloneContents(). For example, in node.js in the clone function, update to:

if( !cloneId ) {
   if( node.hasAttribute( "id" ) )
      node.setAttribute( "data-cke-old-id", node.getAttribute( "id" ) );
   node.removeAttribute( 'id', false );
}

[Piotrek Koszuliński]

Unfortunately, this is a very localized request, not related to the editor. We won't add such feature to the core, just to satisfy one case.

However, we could think of adding an argument to range.cloneContents(). In fact - I wonder how native implementations handle ids.

But since this addition would not be driven by any core need it has low priority for us. Thus, for you it'd be better to fork CKEditor and modify this function ​https://github.com/ckeditor/ckeditor-dev/blob/master/core/dom/range.js#L116. It is used by clone|delete|extractContents methods.

I'm closing this ticket. I extracted: #10473.