public/ckeditor/4.4dev/core/selection.js
function() {
			var el = this.getCommonAncestor();

			if ( el && el.type == CKEDITOR.NODE_TEXT )
				el = el.getParent();

			return !!( el && el.data( 'cke-hidden-sel' ) );
		}
function() {
			var el = this.getCommonAncestor();

			if ( el && el.type == CKEDITOR.NODE_TEXT )
				el = el.getParent();

			return !!( el && el.data( 'cke-hidden-sel' ) );
		}
function ( ) { var el = this . getCommonAncestor ( ) ; if ( el && el . type == CKEDITOR . NODE_TEXT ) el = el . getParent ( ) ; return ! ! ( el && el . data ( 'cke-hidden-sel' ) ) ; }
Checks whether selection is placed in hidden element.

This method is to be used to verify whether fake selection
(see {@link #fake}) is still hidden.

**Note:** this method should be executed on real selection - e.g.:

editor.getSelection( true ).isHidden();

@returns {Boolean}
Checks whether selection is placed in hidden element .