Examples with ModelMap com.vaadin.flow.internal.nodefeature.ModelMap used on opensource projects

Example 41 with ModelMap

use of com.vaadin.flow.internal.nodefeature.ModelMap in project flow by vaadin.

the class TemplateModelUtil method resolveBeanAndRun.

/**
 * Resolves a bean model type and model map based on a model instance and
 * passes those values to the provided callback.
 *
 * @param <R>
 *            the return value type
 * @param model
 *            the model instance for which to resolve a type and a map, not
 *            <code>null</code>
 * @param modelPath
 *            the model path to resolve, not <code>null</code>
 * @param callback
 *            the callback to run with the resolved bean type and the model
 *            map, not <code>null</code>
 * @return the value returned by the callback
 */
public static <R> R resolveBeanAndRun(TemplateModel model, String modelPath, BiFunction<BeanModelType<?>, ModelMap, R> callback) {
    assert model != null;
    assert modelPath != null;
    assert callback != null;
    BeanModelType<?> modelType = TemplateModelProxyHandler.getModelTypeForProxy(model);
    ModelType beanType = modelType.resolveType(modelPath);
    if (beanType instanceof BeanModelType<?>) {
        StateNode stateNode = TemplateModelProxyHandler.getStateNodeForProxy(model);
        ModelMap modelMap = ModelMap.get(stateNode);
        ModelMap beanMap = modelMap.resolveModelMap(modelPath);
        return callback.apply((BeanModelType<?>) beanType, beanMap);
    } else {
        throw new IllegalArgumentException(modelPath + " does not resolve to a bean");
    }
}