All files / src/custom-element/mixins ParentMixin.ts

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/**
 * Mixin for the child element to attach itself to the children collection of the parent element
 * So the parent can manage is children
 * @param Base 
 * @returns 
 */
const ParentMixin = Base =>
 
    class Parent extends Base {
 
        /**
         * The children elements of this one
         */
        protected adoptedChildren: Set<Node> = new Set<Node>();        
 
        protected addAdoptedChild(child: Node) {
 
            this.adoptedChildren.add(child);
        }
 
        protected removeAdoptedChild(child: Node) {
 
            this.adoptedChildren.delete(child);
        }
    }
 
export default ParentMixin;