//
// Shared base for everything shown in the sidebar trees.
//

class Element {
	constructor(identifier) {
		this.identifier = identifier;
		this.children = [];
		this.parent = null;
		this.expanded = false;
	}

	addChild(child) {
		child.parent = this;
		this.children.push(child);
		return child;
	}

	get hasChildren() {
		return this.children.length > 0;
	}

	// Everything about the element that should trigger a tree reload when it
	// changes. Identity is compared separately.
	get revision() {
		return "";
	}
}

module.exports = { Element };