public static BrowserCaps GetBrowserCaps()
{
BrowserCaps objCaps = (BrowserCaps)(DataCache.GetCache(CLIENTAPI_CACHE_KEY));
FunctionalityInfo objFunc = null;
if (objCaps == null)
{
string strPath = string.Empty;
try
{
strPath = HttpContext.Current.Server.MapPath(ClientAPI.ScriptPath + "/ClientAPICaps.config");
}
catch (Exception ex)
{
//ignore error - worried about people with reverse proxies and such...
}
if (File.Exists(strPath))
{
objCaps = new BrowserCaps();
objCaps.Functionality = new FunctionalityCollection();
//Create a FileStream for the Config file
FileStream objReader = new FileStream(strPath, FileMode.Open, FileAccess.Read, FileShare.Read);
XPathDocument objDoc = new XPathDocument(objReader);
foreach (XPathNavigator objNavFunc in objDoc.CreateNavigator().Select("//functionality"))
{
objFunc = new FunctionalityInfo();
objFunc.Functionality = (ClientAPI.ClientFunctionality)(Enum.Parse(typeof(ClientAPI.ClientFunctionality), objNavFunc.GetAttribute("nm", "")));
objFunc.Desc = objNavFunc.GetAttribute("desc", "");
objFunc.Supports = new BrowserCollection();
foreach (XPathNavigator objNavSupports in objNavFunc.CreateNavigator().Select("supports/browser"))
{
objFunc.Supports.Add(GetBrowser(objNavSupports));
}
objFunc.Excludes = new BrowserCollection();
foreach (XPathNavigator objNavExcludes in objNavFunc.CreateNavigator().Select("excludes/browser"))
{
objFunc.Excludes.Add(GetBrowser(objNavExcludes));
}
objCaps.Functionality.Add(objFunc);
}
//Close the Reader
objReader.Close();
// Set back into Cache
DataCache.SetCache(CLIENTAPI_CACHE_KEY, objCaps, new CacheDependency(strPath));
}
}
return(objCaps);
}
/// <summary>
/// Determines of browser currently requesting page adaquately supports passed un client-side functionality
/// </summary>
/// <param name="eFunctionality">Desired Functionality</param>
/// <returns>True when browser supports it</returns>
/// <remarks>
/// </remarks>
/// <history>
/// [Jon Henning] 8/3/2004 Created
/// </history>
public static bool BrowserSupportsFunctionality(ClientFunctionality eFunctionality)
{
if (HttpContext.Current == null)
{
return(true);
}
bool blnSupports = false;
if (ClientAPIDisabled() == false)
{
BrowserCaps objCaps = BrowserCaps.GetBrowserCaps();
if (objCaps != null)
{
HttpRequest objRequest = HttpContext.Current.Request;
string strUserAgent = objRequest.UserAgent;
// HACK : Modified to not error if object is null.
//if (strUserAgent.Length > 0)
if (!String.IsNullOrEmpty(strUserAgent))
{
//First check whether we have checked this browser before
if (objCaps.FunctionalityDictionary.ContainsKey(strUserAgent) == false)
{
string strBrowser = objRequest.Browser.Browser;
double dblVersion = Convert.ToDouble(objRequest.Browser.MajorVersion + objRequest.Browser.MinorVersion);
int iBitValue = 0;
FunctionalityInfo objFuncInfo = null;
//loop through all functionalities for this UserAgent and determine the bitvalue
foreach (ClientFunctionality eFunc in Enum.GetValues(typeof(ClientFunctionality)))
{
objFuncInfo = objCaps.Functionality[eFunc];
if (objFuncInfo.HasMatch(strUserAgent, strBrowser, dblVersion))
{
iBitValue += (int)eFunc;
}
}
objCaps.FunctionalityDictionary[strUserAgent] = iBitValue;
}
blnSupports = (((int)(objCaps.FunctionalityDictionary[strUserAgent])) & (int)eFunctionality) != 0;
}
}
}
return(blnSupports);
}
public static BrowserCaps GetBrowserCaps()
{
BrowserCaps objCaps = (BrowserCaps)(DataCache.GetCache(CLIENTAPI_CACHE_KEY));
FunctionalityInfo objFunc = null;
if (objCaps == null)
{
string strPath = string.Empty;
try
{
strPath = HttpContext.Current.Server.MapPath(ClientAPI.ScriptPath + "/ClientAPICaps.config");
}
catch (Exception ex)
{
//ignore error - worried about people with reverse proxies and such...
}
if (File.Exists(strPath))
{
objCaps = new BrowserCaps();
objCaps.Functionality = new FunctionalityCollection();
//Create a FileStream for the Config file
FileStream objReader = new FileStream(strPath, FileMode.Open, FileAccess.Read, FileShare.Read);
XPathDocument objDoc = new XPathDocument(objReader);
foreach (XPathNavigator objNavFunc in objDoc.CreateNavigator().Select("//functionality"))
{
objFunc = new FunctionalityInfo();
objFunc.Functionality = (ClientAPI.ClientFunctionality)(Enum.Parse(typeof(ClientAPI.ClientFunctionality), objNavFunc.GetAttribute("nm", "")));
objFunc.Desc = objNavFunc.GetAttribute("desc", "");
objFunc.Supports = new BrowserCollection();
foreach (XPathNavigator objNavSupports in objNavFunc.CreateNavigator().Select("supports/browser"))
{
objFunc.Supports.Add(GetBrowser(objNavSupports));
}
objFunc.Excludes = new BrowserCollection();
foreach (XPathNavigator objNavExcludes in objNavFunc.CreateNavigator().Select("excludes/browser"))
{
objFunc.Excludes.Add(GetBrowser(objNavExcludes));
}
objCaps.Functionality.Add(objFunc);
}
//Close the Reader
objReader.Close();
// Set back into Cache
DataCache.SetCache(CLIENTAPI_CACHE_KEY, objCaps, new CacheDependency(strPath));
}
}
return objCaps;
}
