Modifying MOSSMenu to keep selected item highlighted

The SharePoint Team has released the source code to the SharePoint menu class. (MossMenu). I have modified the source to make the selected item stay selected during a postback.

The solution is a modification of a blog entry in Itay Shakury's blog.

In my sites I do not have menu items pointing to specific views in lists etc. (If I change the default view the menu item still shows the default view) So SharePoint will rewrite my url.

Ex: SharePoint will “UrlRewrite” the following url

http://server/site/Listname/

into

http://server/site/Listname/Forms/My%20Default.aspx

Another example of UrlRewrite is when you specify a folder in a document list. I will not provide a full example url because it contains a lot of characters:

http://server/site/listname/Forms/My%20DefaultView.aspx?RootFolder=http%3a%2f%2fsite...

The good part is that the parameter RootFolder (in my case) is the same as I specified in my menu item. So instead I compare the value of the parameter

Here is the code to handle the UrlRewritings:

(See Itay Shakury's blog on where to insert the code, you must modify the OnMenuItemDataBound function)

if (Page.Request.Url != null)

{

String UrlToCheck = Page.Request.Url.ToString().ToLower();

String UrlOnItem = e.Item.NavigateUrl.ToLower();

String UrlPathParam = String.IsNullOrEmpty(Page.Request["rootfolder"]) ? "" : Page.Request["rootfolder"].ToLower();

Boolean ItemSelected = false;

UrlOnItem = UrlOnItem.Replace(SPContext.Current.Site.RootWeb.Url, "");

UrlToCheck = UrlToCheck.Replace(SPContext.Current.Site.RootWeb.Url, "");

if (UrlPathParam.Length != 0)

UrlPathParam = UrlPathParam.Replace(SPContext.Current.Site.RootWeb.Url, "");

UrlOnItem = Page.Server.UrlDecode(UrlOnItem);

UrlToCheck = Page.Server.UrlDecode(UrlToCheck);

if (UrlPathParam.Length != 0)

UrlPathParam = Page.Server.UrlDecode(UrlPathParam);

if (UrlToCheck == UrlOnItem UrlOnItem == UrlPathParam)

{

ItemSelected = true;

}

else if (UrlToCheck.Contains("/forms/")) // Check if the url is without the forms/pagename

{

UrlToCheck = UrlToCheck.Substring(0, UrlToCheck.IndexOf("/forms/") + 1);

if (UrlToCheck == UrlOnItem)

{

ItemSelected = true;

}

}

e.Item.Selected = ItemSelected;

}