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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc {
using System.Collections.Generic;
using System.Web.Routing;
internal static class RouteValuesHelpers {
public static RouteValueDictionary GetRouteValues(RouteValueDictionary routeValues) {
return (routeValues != null) ? new RouteValueDictionary(routeValues) : new RouteValueDictionary();
}
public static RouteValueDictionary MergeRouteValues(string actionName, string controllerName, RouteValueDictionary implicitRouteValues, RouteValueDictionary routeValues, bool includeImplicitMvcValues) {
// Create a new dictionary containing implicit and auto-generated values
RouteValueDictionary mergedRouteValues = new RouteValueDictionary();
if (includeImplicitMvcValues) {
// We only include MVC-specific values like 'controller' and 'action' if we are generating an action link.
// If we are generating a route link [as to MapRoute("Foo", "any/url", new { controller = ... })], including
// the current controller name will cause the route match to fail if the current controller is not the same
// as the destination controller.
object implicitValue;
if (implicitRouteValues != null && implicitRouteValues.TryGetValue("action", out implicitValue)) {
mergedRouteValues["action"] = implicitValue;
}
if (implicitRouteValues != null && implicitRouteValues.TryGetValue("controller", out implicitValue)) {
mergedRouteValues["controller"] = implicitValue;
}
}
// Merge values from the user's dictionary/object
if (routeValues != null) {
foreach (KeyValuePair<string, object> routeElement in GetRouteValues(routeValues)) {
mergedRouteValues[routeElement.Key] = routeElement.Value;
}
}
// Merge explicit parameters when not null
if (actionName != null) {
mergedRouteValues["action"] = actionName;
}
if (controllerName != null) {
mergedRouteValues["controller"] = controllerName;
}
return mergedRouteValues;
}
}
}
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