ractive/src/virtualdom/items/Component/prototype/rebind.js

Next-generation DOM manipulation

import runloop from 'global/runloop';
import getNewKeypath from 'virtualdom/items/shared/utils/getNewKeypath';

export default function Component$rebind ( indexRef, newIndex, oldKeypath, newKeypath ) {
	var childInstance = this.instance,
		parentInstance = childInstance._parent,
		indexRefAlias, query;

	this.bindings.forEach( binding => {
		var updated;

		if ( binding.root !== parentInstance ) {
			return; // we only want parent -> child bindings for this
		}

		if ( updated = getNewKeypath( binding.keypath, oldKeypath, newKeypath ) ) {
			binding.rebind( updated );
		}
	});

	this.complexParameters.forEach( parameter => {
		parameter.rebind( indexRef, newIndex, oldKeypath, newKeypath );
	});

	if ( indexRefAlias = this.indexRefBindings[ indexRef ] ) {
		runloop.addViewmodel( childInstance.viewmodel );
		childInstance.viewmodel.set( indexRefAlias, newIndex );
	}

	if ( query = this.root._liveComponentQueries[ '_' + this.name ] ) {
		query._makeDirty();
	}
}