angular2/src/router/route_config_nomalizer.js

Angular 2 - a web framework for modern web apps

'use strict';var route_config_decorator_1 = require('./route_config_decorator');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
/**
 * Given a JS Object that represents a route config, returns a corresponding Route, AsyncRoute,
 * AuxRoute or Redirect object.
 *
 * Also wraps an AsyncRoute's loader function to add the loaded component's route config to the
 * `RouteRegistry`.
 */
function normalizeRouteConfig(config, registry) {
    if (config instanceof route_config_decorator_1.AsyncRoute) {
        var wrappedLoader = wrapLoaderToReconfigureRegistry(config.loader, registry);
        return new route_config_decorator_1.AsyncRoute({
            path: config.path,
            loader: wrappedLoader,
            name: config.name,
            data: config.data,
            useAsDefault: config.useAsDefault
        });
    }
    if (config instanceof route_config_decorator_1.Route || config instanceof route_config_decorator_1.Redirect || config instanceof route_config_decorator_1.AuxRoute) {
        return config;
    }
    if ((+!!config.component) + (+!!config.redirectTo) + (+!!config.loader) != 1) {
        throw new exceptions_1.BaseException("Route config should contain exactly one \"component\", \"loader\", or \"redirectTo\" property.");
    }
    if (config.as && config.name) {
        throw new exceptions_1.BaseException("Route config should contain exactly one \"as\" or \"name\" property.");
    }
    if (config.as) {
        config.name = config.as;
    }
    if (config.loader) {
        var wrappedLoader = wrapLoaderToReconfigureRegistry(config.loader, registry);
        return new route_config_decorator_1.AsyncRoute({
            path: config.path,
            loader: wrappedLoader,
            name: config.name,
            useAsDefault: config.useAsDefault
        });
    }
    if (config.aux) {
        return new route_config_decorator_1.AuxRoute({ path: config.aux, component: config.component, name: config.name });
    }
    if (config.component) {
        if (typeof config.component == 'object') {
            var componentDefinitionObject = config.component;
            if (componentDefinitionObject.type == 'constructor') {
                return new route_config_decorator_1.Route({
                    path: config.path,
                    component: componentDefinitionObject.constructor,
                    name: config.name,
                    data: config.data,
                    useAsDefault: config.useAsDefault
                });
            }
            else if (componentDefinitionObject.type == 'loader') {
                return new route_config_decorator_1.AsyncRoute({
                    path: config.path,
                    loader: componentDefinitionObject.loader,
                    name: config.name,
                    useAsDefault: config.useAsDefault
                });
            }
            else {
                throw new exceptions_1.BaseException("Invalid component type \"" + componentDefinitionObject.type + "\". Valid types are \"constructor\" and \"loader\".");
            }
        }
        return new route_config_decorator_1.Route(config);
    }
    if (config.redirectTo) {
        return new route_config_decorator_1.Redirect({ path: config.path, redirectTo: config.redirectTo });
    }
    return config;
}
exports.normalizeRouteConfig = normalizeRouteConfig;
function wrapLoaderToReconfigureRegistry(loader, registry) {
    return function () {
        return loader().then(function (componentType) {
            registry.configFromComponent(componentType);
            return componentType;
        });
    };
}
function assertComponentExists(component, path) {
    if (!lang_1.isType(component)) {
        throw new exceptions_1.BaseException("Component for route \"" + path + "\" is not defined, or is not a class.");
    }
}
exports.assertComponentExists = assertComponentExists;
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