public static IEnumerable<SiteMapNode> BuildDynamicNodes(string assemblyQualifiedTypeString, SiteMapNode parentNode)
{
var type = Type.GetType(assemblyQualifiedTypeString);
if (type == null)
throw new Exception($"Type {assemblyQualifiedTypeString} was not found.");
IDynamicNodeProvider dynamicNodeProvider;
if (!cachedNodeProviders.TryGetValue(type, out dynamicNodeProvider))
{
lock (syncLock)
{
if (!cachedNodeProviders.TryGetValue(type, out dynamicNodeProvider))
{
dynamicNodeProvider = Activator.CreateInstance(type) as IDynamicNodeProvider;
cachedNodeProviders.Add(type, dynamicNodeProvider);
}
}
}
foreach(var dynamicNode in dynamicNodeProvider.GetSiteMapNodes())
{
yield return ProcessNode(dynamicNode, parentNode);
}
}
private static SiteMapNode ProcessNode(SiteMapNode nodeToProcess, SiteMapNode parentNode)
{
var area = string.IsNullOrEmpty(nodeToProcess.Area) ? parentNode.Area : nodeToProcess.Area;
var controller = string.IsNullOrEmpty(nodeToProcess.Controller) ? parentNode.Controller : nodeToProcess.Controller;
var action = nodeToProcess.Action;
var url = nodeToProcess.Url;
var explicitKey = nodeToProcess.Key;
var parentKey = parentNode == null ? "" : parentNode.Key;
var httpMethod = HttpVerbs.Get.ToString().ToUpperInvariant();
var clickable = true;
var title = nodeToProcess.Title;
string key = nodeKeyGenerator.GenerateKey(
parentKey,
explicitKey,
url,
title,
area,
controller,
action,
httpMethod,
clickable
);
nodeToProcess.Area = area;
nodeToProcess.Controller = controller;
nodeToProcess.Action = action;
nodeToProcess.Url = url;
nodeToProcess.UnresolvedUrl = url;
nodeToProcess.Key = key;
nodeToProcess.Clickable = clickable;
nodeToProcess.Title = title;
return nodeToProcess;
}
protected virtual string InheritAreaIfNotProvided(SiteMapNode node, SiteMapNode parentNode)
{
var result = node.Area;
if (string.IsNullOrEmpty(result) && parentNode != null)
{
result = parentNode.Area;
}
return result;
}
protected virtual SiteMapNode GetSiteMapNodeFromXmlElement(XElement node, SiteMapNode parentNode)
{
// get data required to generate the node instance
// get area and controller from node declaration
var area = InheritAreaIfNotProvided(node, parentNode);
var controller = InheritControllerIfNotProvided(node, parentNode);
var action = node.GetAttributeValue("action");
var url = node.GetAttributeValue("url");
var explicitKey = node.GetAttributeValue("key");
var parentKey = parentNode == null ? string.Empty : parentNode.Key;
var httpMethod = node.GetAttributeValueOrFallback("httpMethod", HttpVerbs.Get.ToString()).ToUpperInvariant();
var clickable = bool.Parse(node.GetAttributeValueOrFallback("clickable", "true"));
var title = node.GetAttributeValue("title");
var description = node.GetAttributeValue("description");
var targetFrame = node.GetAttributeValue("targetFrame");
var imageUrl = node.GetAttributeValue("imageUrl");
var order = int.Parse(node.GetAttributeValueOrFallback("order", "0"));
var dynamicNodeProvider = node.GetAttributeValue("dynamicNodeProvider");
//var implicitResourceKey = node.GetAttributeValue("resourceKey");
var siteMapNode = new SiteMapNode
{
Key = nodeKeyGenerator.GenerateKey(parentKey, explicitKey, url, title, area, controller, action, httpMethod, clickable),
Title = title,
Clickable = clickable,
Area = area,
Controller = controller,
Action = action,
DynamicNodeProvider = dynamicNodeProvider,
Attributes = new Dictionary<string, object>(),
ChildNodes = new List<SiteMapNode>(),
Description = description,
TargetFrame = targetFrame,
ImageUrl = imageUrl,
Url = url,
UnresolvedUrl = url,
Order = order
};
return siteMapNode;
}
protected virtual SiteMapNode GetSiteMapNodeFromJSONNode(SiteMapNode jsonNode, SiteMapNode parentNode)
{
// get data required to generate the node instance
// get area and controller
var area = InheritAreaIfNotProvided(jsonNode, parentNode);
var controller = InheritControllerIfNotProvided(jsonNode, parentNode);
var action = jsonNode.Action;
var url = jsonNode.Url;
var explicitKey = jsonNode.Key;
var parentKey = parentNode == null ? string.Empty : parentNode.Key;
var httpMethod = (string.IsNullOrEmpty(jsonNode.HttpMethod) ? HttpVerbs.Get.ToString() : jsonNode.HttpMethod).ToUpperInvariant();
var clickable = jsonNode.Clickable;
var title = jsonNode.Title;
var description = jsonNode.Description;
var targetFrame = jsonNode.TargetFrame;
var imageUrl = jsonNode.ImageUrl;
var order = jsonNode.Order;
var dynamicNodeProvider = jsonNode.DynamicNodeProvider;
var siteMapNode = new SiteMapNode
{
Key = nodeKeyGenerator.GenerateKey(parentKey, explicitKey, url, title, area, controller, action, httpMethod, clickable),
Title = title,
Clickable = clickable,
Area = area,
Controller = controller,
Action = action,
DynamicNodeProvider = dynamicNodeProvider,
Attributes = new Dictionary<string, object>(),
ChildNodes = new List<SiteMapNode>(),
Description = description,
TargetFrame = targetFrame,
ImageUrl = imageUrl,
Url = url,
UnresolvedUrl = url,
Order = order
};
return siteMapNode;
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth)
{
return Menu(helper, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, false);
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="drillDownToCurrent">Should the model exceed the maxDepth to reach the current node?</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, bool drillDownToCurrent, object sourceMetadata)
{
return Menu(helper, null, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, drillDownToCurrent, sourceMetadata);
}
/// <summary>
/// Builds the model.
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Renders startingNode in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <returns>The model.</returns>
private static MenuHelperModel BuildModel(MvcSiteMapHtmlHelper helper, SourceMetadataDictionary sourceMetadata, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth)
{
return BuildModel(helper, sourceMetadata, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, false, helper.SiteMap.VisibilityAffectsDescendants);
}
/// <summary>
/// Gets SiteMap path for the current request
/// </summary>
/// <param name="helper">MvcSiteMapHtmlHelper instance</param>
/// <param name="startingNode">The starting node (the last node in the site map path).</param>
/// <returns>SiteMap path for the current request</returns>
public static MvcHtmlString SiteMapPath(this MvcSiteMapHtmlHelper helper, SiteMapNode startingNode)
{
return SiteMapPath(helper, null, startingNode);
}
/// <summary>
/// Gets SiteMap path for the current request
/// </summary>
/// <param name="helper">MvcSiteMapHtmlHelper instance</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node (the last node in the site map path).</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>SiteMap path for the current request</returns>
public static MvcHtmlString SiteMapPath(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, SourceMetadataDictionary sourceMetadata)
{
var model = BuildModel(helper, GetSourceMetadata(sourceMetadata), startingNode);
return helper
.CreateHtmlHelperForModel(model)
.DisplayFor(m => model, templateName);
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode)
{
return Menu(helper, startingNode, startingNodeInChildLevel, showStartingNode, Int32.MaxValue, false);
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, object sourceMetadata)
{
return Menu(helper, templateName, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, false, sourceMetadata);
}
protected virtual void ProcessNodes(IEnumerable<SiteMapNode> nodes, SiteMapNode rootNode)
{
foreach (var node in nodes)
{
var siteMapNode = GetSiteMapNodeFromJSONNode(node, rootNode);
if (!string.IsNullOrEmpty(siteMapNode.DynamicNodeProvider))
{
// has dynamic node provider
var dynamicNodes = DynamicNodeBuilder.BuildDynamicNodes(siteMapNode.DynamicNodeProvider, rootNode);
// add to root node
rootNode.ChildNodes.AddRange(dynamicNodes);
// add non-dynamic children for every dynamic node
ProcessNodes(dynamicNodes, rootNode);
}
else
{
rootNode.ChildNodes.Add(siteMapNode);
ProcessNodes(node.ChildNodes, siteMapNode);
}
}
}
/// <summary>
/// Recursively process our XML document, parsing our siteMapNodes and dynamicNode(s).
/// </summary>
/// <param name="rootNode">The main root siteMap node.</param>
/// <param name="rootElement">the main root XML element.</param>
protected virtual void ProcessXmlNodes(SiteMapNode rootNode, XElement rootElement)
{
// loop through each element below the current root element
foreach (XElement node in rootElement.Elements())
{
SiteMapNode childNode;
if (!node.Name.LocalName.Equals(nodeName, StringComparison.OrdinalIgnoreCase))
throw new Exception($"Element of type {node.Name.LocalName} is an invalid node.");
// if this is a normal mvcSieMapNode then map the xml element
// to an mvcSiteMapNode, and add the node to the current root.
childNode = GetSiteMapNodeFromXmlElement(node, rootNode);
if (!string.IsNullOrEmpty(childNode.DynamicNodeProvider))
{
// has dynamic node provider
var dynamicNodes = DynamicNodeBuilder.BuildDynamicNodes(childNode.DynamicNodeProvider, rootNode);
// add to root node
rootNode.ChildNodes.AddRange(dynamicNodes);
// add non-dynamic children for every dynamic node
foreach (var dynamicNode in dynamicNodes)
{
ProcessXmlNodes(dynamicNode, node);
}
}
else
{
rootNode.ChildNodes.Add(childNode);
ProcessXmlNodes(childNode, node);
}
}
}
/// <summary>
/// Inherits the controller from the parent node if it is not provided in the current siteMapNode XML element and the parent node is not null.
/// </summary>
/// <param name="node">The siteMapNode element.</param>
/// <param name="parentNode">The parent node.</param>
/// <returns>The value provided by either the siteMapNode or parentNode.Controller.</returns>
protected virtual string InheritControllerIfNotProvided(XElement node, SiteMapNode parentNode)
{
var result = node.GetAttributeValue("controller");
if (node.Attribute("controller") == null && parentNode != null)
{
result = parentNode.Controller;
}
return result;
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, SourceMetadataDictionary sourceMetadata)
{
return Menu(helper, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, false, sourceMetadata);
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, SourceMetadataDictionary sourceMetadata)
{
return Menu(helper, templateName, startingNode, startingNodeInChildLevel, showStartingNode, Int32.MaxValue, false, sourceMetadata);
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="drillDownToCurrent">Should the model exceed the maxDepth to reach the current node</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, bool drillDownToCurrent)
{
return Menu(helper, templateName, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, drillDownToCurrent, new SourceMetadataDictionary());
}
/// <summary>
/// Gets SiteMap path for the current request
/// </summary>
/// <param name="helper">MvcSiteMapHtmlHelper instance</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node (the last node in the site map path).</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>SiteMap path for the current request</returns>
public static MvcHtmlString SiteMapPath(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, object sourceMetadata)
{
return SiteMapPath(helper, templateName, startingNode, new SourceMetadataDictionary(sourceMetadata));
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="drillDownToCurrent">Should the model exceed the maxDepth to reach the current node</param>
/// <param name="visibilityAffectsDescendants"><c>true</c> if the visibility provider should affect the visibility of descendant nodes, otherwise <c>false</c>.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, bool drillDownToCurrent, bool visibilityAffectsDescendants, object sourceMetadata)
{
return Menu(helper, templateName, startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, drillDownToCurrent, visibilityAffectsDescendants, new SourceMetadataDictionary(sourceMetadata));
}
/// <summary>
/// Builds the model.
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>The model.</returns>
private static SiteMapPathHelperModel BuildModel(MvcSiteMapHtmlHelper helper, SourceMetadataDictionary sourceMetadata, SiteMapNode startingNode)
{
// Build model
var model = new SiteMapPathHelperModel();
var node = startingNode;
while (node != null)
{
bool nodeVisible = node.IsVisible(sourceMetadata);
if (nodeVisible && node.IsAccessibleToUser())
{
var nodeToAdd = new SiteMapNodeModel(helper.SiteMap, node, sourceMetadata);
model.Nodes.Add(nodeToAdd);
}
node = node.GetParentNode(helper.SiteMap);
}
model.Nodes.Reverse();
return model;
}
/// <summary>
/// Build a menu, based on the MvcSiteMap
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="templateName">Name of the template.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Show starting node in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="drillDownToCurrent">Should the model exceed the maxDepth to reach the current node</param>
/// <param name="visibilityAffectsDescendants"><c>true</c> if the visibility provider should affect the visibility of descendant nodes, otherwise <c>false</c>.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <returns>Html markup</returns>
public static MvcHtmlString Menu(this MvcSiteMapHtmlHelper helper, string templateName, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, bool drillDownToCurrent, bool visibilityAffectsDescendants, SourceMetadataDictionary sourceMetadata)
{
var model = BuildModel(helper, GetSourceMetadata(sourceMetadata), startingNode, startingNodeInChildLevel, showStartingNode, maxDepth, drillDownToCurrent, visibilityAffectsDescendants);
return helper
.CreateHtmlHelperForModel(model)
.DisplayFor(m => model, templateName);
}
private TreeNode<MenuItem> ConvertSitemapNodeToMenuItemNode(SiteMapNode node)
{
var item = new MenuItem();
var treeNode = new TreeNode<MenuItem>(item);
if (node.RouteName.HasValue())
{
item.RouteName = node.RouteName;
}
else if (node.ActionName.HasValue() && node.ControllerName.HasValue())
{
item.ActionName = node.ActionName;
item.ControllerName = node.ControllerName;
}
else if (node.Url.HasValue())
{
item.Url = node.Url;
}
item.RouteValues = node.RouteValues;
item.Visible = node.Visible;
item.Text = node.Title;
item.Attributes.Merge(node.Attributes);
if (node.Attributes.ContainsKey("permissionNames"))
item.PermissionNames = node.Attributes["permissionNames"] as string;
if (node.Attributes.ContainsKey("id"))
item.Id = node.Attributes["id"] as string;
if (node.Attributes.ContainsKey("resKey"))
item.ResKey = node.Attributes["resKey"] as string;
if (node.Attributes.ContainsKey("iconClass"))
item.Icon = node.Attributes["iconClass"] as string;
if (node.Attributes.ContainsKey("imageUrl"))
item.ImageUrl = node.Attributes["imageUrl"] as string;
if (node.Attributes.ContainsKey("isGroupHeader"))
item.IsGroupHeader = Boolean.Parse(node.Attributes["isGroupHeader"] as string);
// iterate children recursively
foreach (var childNode in node.ChildNodes)
{
var childTreeNode = ConvertSitemapNodeToMenuItemNode(childNode);
treeNode.Append(childTreeNode);
}
return treeNode;
}
/// <summary>
/// Builds the model.
/// </summary>
/// <param name="helper">The helper.</param>
/// <param name="sourceMetadata">User-defined meta data.</param>
/// <param name="startingNode">The starting node.</param>
/// <param name="startingNodeInChildLevel">Renders startingNode in child level if set to <c>true</c>.</param>
/// <param name="showStartingNode">Show starting node if set to <c>true</c>.</param>
/// <param name="maxDepth">The max depth.</param>
/// <param name="drillDownToCurrent">Should the model exceed the maxDepth to reach the current node?</param>
/// <param name="visibilityAffectsDescendants"><b>true</b> if the visibility provider should affect the current node as well as all descendant nodes; otherwise <b>false</b>.</param>
/// <returns>The model.</returns>
internal static MenuHelperModel BuildModel(MvcSiteMapHtmlHelper helper, SourceMetadataDictionary sourceMetadata, SiteMapNode startingNode, bool startingNodeInChildLevel, bool showStartingNode, int maxDepth, bool drillDownToCurrent, bool visibilityAffectsDescendants)
{
// Build model
var model = new MenuHelperModel();
var node = startingNode;
// Check if a starting node has been given
if (node == null)
{
return model;
}
// Check ACL
if (node.IsAccessibleToUser())
{
// Add node?
var nodeToAdd = new SiteMapNodeModel(helper.SiteMap, node, sourceMetadata, maxDepth, drillDownToCurrent, startingNodeInChildLevel, visibilityAffectsDescendants);
// Check visibility
if (node.IsVisible(sourceMetadata))
{
if (showStartingNode || !startingNodeInChildLevel)
{
model.Nodes.Add(nodeToAdd);
}
// Add child nodes
if (visibilityAffectsDescendants && startingNodeInChildLevel)
{
model.Nodes.AddRange(nodeToAdd.Children);
}
}
// Add child nodes
if (!visibilityAffectsDescendants && startingNodeInChildLevel)
{
model.Nodes.AddRange(nodeToAdd.Children);
}
}
return model;
}
