/// <summary>
/// Updates the capabilities used by Microsoft's implementation of the
/// HttpBrowserCapabilities class to control the property values it
/// returns. Only properties exposed by FiftyOneBrowserCapabilities are overriden
/// by this method.
/// </summary>
/// <param name="capabilities">Dictionary of capabilities to be enhanced.</param>
/// <param name="currentCapabilities">Dictionary of existing capabilities for the device.</param>
/// <param name="results">The match result to use for the enhancement.</param>
private static void Enhance(
IDictionary capabilities,
HttpBrowserCapabilities currentCapabilities,
SortedList<string, string[]> results)
{
// Set base capabilities for all mobile devices.
SetStaticValues(capabilities);
SetValue(capabilities, "isMobileDevice", GetIsMobileDevice(results));
SetValue(capabilities, "crawler", GetIsCrawler(results));
SetValue(capabilities, "mobileDeviceModel", GetMobileDeviceModel(results));
SetValue(capabilities, "mobileDeviceManufacturer", GetMobileDeviceManufacturer(results));
SetValue(capabilities, "platform", GetPlatform(results));
// property enhancement can be removed with this compiler flag
#if !REMOVE_OVERRIDE_BROWSER
SetValue(capabilities, "browser", GetBrowser(results));
#endif
SetValue(capabilities, "type", capabilities["mobileDeviceManufacturer"]);
SetValue(capabilities, "screenPixelsHeight", GetScreenPixelsHeight(results) ??
GetDefaultValue("screenPixelsHeight", currentCapabilities));
SetValue(capabilities, "screenPixelsWidth", GetScreenPixelsWidth(results) ??
GetDefaultValue("screenPixelsWidth", currentCapabilities));
SetValue(capabilities, "screenBitDepth", GetBitsPerPixel(results));
SetValue(capabilities, "preferredImageMime", GetPreferredImageMime(results));
SetValue(capabilities, "isColor", GetIsColor(results));
SetValue(capabilities, "supportsCallback", GetSupportsCallback(results));
SetValue(capabilities, "SupportsCallback", GetSupportsCallback(results));
SetValue(capabilities, "canInitiateVoiceCall", GetIsMobileDevice(results));
SetValue(capabilities, "jscriptversion", GetJavascriptVersion(results));
// The following values are set to prevent exceptions being thrown in
// the standard .NET base classes if the property is accessed.
SetValue(capabilities, "screenCharactersHeight",
GetDefaultValue("screenCharactersHeight", currentCapabilities));
SetValue(capabilities, "screenCharactersWidth",
GetDefaultValue("screenCharactersWidth", currentCapabilities));
// Use the Version class to find the version. If this fails use the 1st two
// decimal segments of the string.
string versionValue = results.GetString("BrowserVersion");
if (versionValue != null)
{
#if VER4
Version version = null;
if (Version.TryParse(versionValue, out version))
{
SetVersion(capabilities, version);
}
else
{
SetVersion(capabilities, versionValue.ToString());
}
#else
try
{
SetVersion(capabilities, new Version(versionValue));
}
catch (FormatException)
{
SetVersion(capabilities, versionValue.ToString());
}
catch (ArgumentException)
{
SetVersion(capabilities, versionValue.ToString());
}
#endif
}
else
{
// Transfer the current version capabilities to the new capabilities.
SetValue(capabilities, "majorversion", currentCapabilities != null ? currentCapabilities["majorversion"] : null);
SetValue(capabilities, "minorversion", currentCapabilities != null ? currentCapabilities["minorversion"] : null);
SetValue(capabilities, "version", currentCapabilities != null ? currentCapabilities["version"] : null);
// Ensure the version values are not null to prevent null arguement exceptions
// with some controls.
var versionString = currentCapabilities != null ? currentCapabilities["version"] as string : "0.0";
SetVersion(capabilities, versionString);
}
// All we can determine from the device database is if javascript is supported as a boolean.
// If the value is not provided then null is returned and the capabilities won't be altered.
var javaScript = GetJavascriptSupport(results);
if (javaScript.HasValue)
{
SetJavaScript(capabilities, javaScript.Value);
SetValue(capabilities, "ecmascriptversion",
(bool)javaScript ? "3.0" : "0.0");
}
// Sets the W3C DOM version.
SetValue(capabilities, "w3cdomversion",
GetW3CDOMVersion(results,
currentCapabilities != null
? (string)currentCapabilities["w3cdomversion"]
: String.Empty));
// Update the cookies value if we have additional information.
SetValue(capabilities, "cookies",
GetCookieSupport(results,
currentCapabilities != null
? (string)currentCapabilities["cookies"]
: String.Empty));
// Only set these values from 51Degrees.mobi if they've not already been set from
// the Http request header, or the .NET solution.
if (capabilities.Contains("preferredRenderingType") == false)
{
// Set the rendering type for the response.
SetValue(capabilities, "preferredRenderingType", GetPreferredHtmlVersion(results));
// Set the Mime type of the response.
SetValue(capabilities, "preferredRenderingMime", "text/html");
}
}