//public static object CreateInstance(Guid classIID)
//{
// Guid iid = typeof(nsISupports).GUID;
// return ComponentManager.CreateInstance(ref classIID, null, ref iid);
//}
//public static object CreateInstance(string contractID)
//{
// return CreateInstance<nsISupports>(contractID);
//}
public static TInterfaceType CreateInstance <TInterfaceType>(string contractID)
{
Guid iid = typeof(TInterfaceType).GUID;
IntPtr ptr = ComponentManager.CreateInstanceByContractID(contractID, null, ref iid);
return((TInterfaceType)Xpcom.GetObjectForIUnknown(ptr));
}
public ComPtr <nsISupports> GetGlobalNsObject()
{
IntPtr globalObject = SpiderMonkey.CurrentGlobalOrNull(_cx);
if (globalObject != IntPtr.Zero)
{
Guid guid = typeof(nsISupports).GUID;
IntPtr pUnk = IntPtr.Zero;
try
{
pUnk = Xpcom.XPConnect.Instance.WrapJS(_cx, globalObject, ref guid);
object comObj = Xpcom.GetObjectForIUnknown(pUnk);
try
{
return(Xpcom.QueryInterface <nsISupports>(comObj).AsComPtr());
}
finally
{
Xpcom.FreeComObject(ref comObj);
}
}
finally
{
if (pUnk != IntPtr.Zero)
{
Marshal.Release(pUnk);
}
}
}
return(null);
}
/// <summary>
/// Converts to COM object without null check
/// </summary>
/// <returns></returns>
private object ToComObjectInternal()
{
var context = AutoJSContext.Current;
if (context == null)
{
throw new Exception("AutoJSContext not set.");
}
{
var jsObject = SpiderMonkey.JS_ValueToObject(context.ContextPointer, this);
var guid = typeof(nsISupports).GUID;
var pUnk = IntPtr.Zero;
try
{
pUnk = Xpcom.XPConnect.Instance.WrapJS(context.ContextPointer, jsObject, ref guid);
var comObj = Xpcom.GetObjectForIUnknown(pUnk);
return(comObj);
}
finally
{
if (pUnk != IntPtr.Zero)
{
Marshal.Release(pUnk);
}
}
}
}
//public static object GetService(string contractID)
//{
// return GetService<nsISupports>(contractID);
//}
public static TInterfaceType GetService <TInterfaceType>(string contractID)
{
AssertCorrectThread();
Guid iid = typeof(TInterfaceType).GUID;
IntPtr ptr = ServiceManager.GetServiceByContractID(contractID, ref iid);
return((TInterfaceType)Xpcom.GetObjectForIUnknown(ptr));
}
//public static object CreateInstance(Guid classIID)
//{
// Guid iid = typeof(nsISupports).GUID;
// return ComponentManager.CreateInstance(ref classIID, null, ref iid);
//}
//public static object CreateInstance(string contractID)
//{
// return CreateInstance<nsISupports>(contractID);
//}
public static TInterfaceType CreateInstance <TInterfaceType>(string contractID)
{
Guid iid = typeof(TInterfaceType).GUID;
IntPtr ptr = ComponentManager.CreateInstanceByContractID(contractID, null, ref iid);
var obj = (TInterfaceType)Xpcom.GetObjectForIUnknown(ptr);
// now owned by the RCW.
Marshal.Release(ptr);
return(obj);
}
/// <summary>
/// Gets the string value of a pref. This is a replacement of nsIPrefBranch::GetCharPref(), which can't handle unicode values.
/// See also <a href="http://www-archive.mozilla.org/projects/intl/changefontpref2.html">How to change the font setting in Gecko from the Embedding Application</a>
/// </summary>
private static string GetUnicodePref(nsIPrefBranch branch, string name)
{
var iid = typeof(nsISupportsString).GUID;
IntPtr pStr = branch.GetComplexValue(name, ref iid);
if (pStr == IntPtr.Zero)
{
return(null);
}
var sStr = (nsISupportsString)Xpcom.GetObjectForIUnknown(pStr);
Marshal.Release(pStr);
return(nsString.Get(sStr.GetDataAttribute));
}
/// <summary>
/// Converts to COM object without null check
/// </summary>
/// <param name="cx"></param>
/// <returns></returns>
private object ToComObjectInternal(IntPtr cx)
{
using (var context = new AutoJSContext(cx))
{
var jsObject = SpiderMonkey.JS_ValueToObject(context.ContextPointer, this);
var guid = typeof(nsISupports).GUID;
var pUnk = IntPtr.Zero;
try
{
pUnk = Xpcom.XPConnect.Instance.WrapJS(context.ContextPointer, jsObject, ref guid);
var comObj = Xpcom.GetObjectForIUnknown(pUnk);
return(comObj);
}
finally
{
if (pUnk != IntPtr.Zero)
{
Marshal.Release(pUnk);
}
}
}
}
public nsISupports GetGlobalNsObject()
{
IntPtr globalObject = SpiderMonkey.JS_GetGlobalObject(_cx);
if (globalObject != IntPtr.Zero)
{
Guid guid = typeof(nsISupports).GUID;
IntPtr pUnk = IntPtr.Zero;
try
{
pUnk = XPConnect.WrapJS(_cx, globalObject, ref guid);
return((nsISupports)Xpcom.GetObjectForIUnknown(pUnk));
}
finally
{
if (pUnk != IntPtr.Zero)
{
Marshal.Release(pUnk);
}
}
}
return(null);
}
public static object QueryInterface(object obj, Guid iid)
{
AssertCorrectThread();
if (obj == null)
{
return(null);
}
// get an nsISupports (aka IUnknown) pointer from the object
IntPtr pUnk = Marshal.GetIUnknownForObject(obj);
if (pUnk == IntPtr.Zero)
{
return(null);
}
// query interface
IntPtr ppv;
Marshal.QueryInterface(pUnk, ref iid, out ppv);
// if QueryInterface didn't work, try using nsIInterfaceRequestor instead
if (ppv == IntPtr.Zero)
{
// QueryInterface the object for nsIInterfaceRequestor
Guid interfaceRequestorIID = typeof(nsIInterfaceRequestor).GUID;
IntPtr pInterfaceRequestor;
Marshal.QueryInterface(pUnk, ref interfaceRequestorIID, out pInterfaceRequestor);
// if we got a pointer to nsIInterfaceRequestor
if (pInterfaceRequestor != IntPtr.Zero)
{
// convert it to a managed interface
QI_nsIInterfaceRequestor req = (QI_nsIInterfaceRequestor)Xpcom.GetObjectForIUnknown(pInterfaceRequestor);
if (req != null)
{
try
{
req.GetInterface(ref iid, out ppv);
// clean up
Marshal.ReleaseComObject(req);
}
catch (NullReferenceException ex)
{
Debug.WriteLine("NullRefException from native code.\n" + ex.ToString());
}
}
Marshal.Release(pInterfaceRequestor);
}
}
object result = (ppv != IntPtr.Zero) ? Xpcom.GetObjectForIUnknown(ppv) : null;
Marshal.Release(pUnk);
if (ppv != IntPtr.Zero)
{
Marshal.Release(ppv);
}
return(result);
}
