private static IntPtr GetContextByName(string contextName)
{
Xpcom.AssertCorrectThread();
IntPtr rt = Runtime;
IntPtr iterp = IntPtr.Zero;
IntPtr cx;
while ((cx = SpiderMonkey.JS_ContextIterator(rt, ref iterp)) != IntPtr.Zero)
{
IntPtr global = SpiderMonkey.JS_GetGlobalObject(cx);
if (global != IntPtr.Zero)
{
IntPtr classp = SpiderMonkey.JS_GetClass(global);
// get class name
if (classp != IntPtr.Zero)
{
string className = Marshal.PtrToStringAnsi(Marshal.ReadIntPtr(classp));
if (className == contextName)
{
return(cx);
}
}
}
}
return(IntPtr.Zero);
}
/// <summary>
/// Add hooks to listen for new JSContext creation and store the context for later use.
/// </summary>
internal static void Initialize()
{
Xpcom.AssertCorrectThread();
if (!_isInitialized)
_isInitialized = true;
}
/// <summary>
/// Helper method for WeakReference
/// </summary>
internal static IntPtr QueryReferent(object obj, ref Guid uuid)
{
Xpcom.AssertCorrectThread();
IntPtr ppv, pUnk = Marshal.GetIUnknownForObject(obj);
Marshal.QueryInterface(pUnk, ref uuid, out ppv);
Marshal.Release(pUnk);
return(ppv);
}
/// <summary>
/// Add hooks to listen for new JSContext creation and store the context for later use.
/// </summary>
internal static void Initialize()
{
Xpcom.AssertCorrectThread();
if (!_isInitialized)
{
_isInitialized = true;
using (var runtimeService = new Gecko.Interop.ServiceWrapper <nsIJSRuntimeService>("@mozilla.org/js/xpc/RuntimeService;1"))
{
_originalContextCallback = SpiderMonkey.JS_SetContextCallback(Runtime, _globalContextCallback);
}
}
}
internal byte[] DrawWindow(nsIDOMWindow window, uint x, uint y, uint w, uint h)
{
Xpcom.AssertCorrectThread();
Init();
SetValue("x", x);
SetValue("y", y);
SetValue("w", w);
SetValue("h", h);
using (var data = Xpcom.CreateInstance2 <nsIWritableVariant>("@mozilla.org/variant;1"))
{
data.Instance.SetAsISupports((nsISupports)window);
using (var key = new nsAString("window"))
{
object comObj = command.Instance.SetUserData(key, data.Instance, null);
Xpcom.FreeComObject(ref comObj);
command.Instance.DoCommand();
comObj = command.Instance.SetUserData(key, null, null);
Xpcom.FreeComObject(ref comObj);
}
}
string base64Image = null;
using (var key = new nsAString("drawResult"))
{
using (var drawResult = command.Instance.SetUserData(key, null, null).AsComPtr())
{
if (drawResult != null)
{
base64Image = drawResult.Instance.GetAsWString();
}
}
}
if (base64Image == null)
{
throw new InvalidOperationException();
}
if (!base64Image.StartsWith("data:image/png;base64,"))
{
throw new InvalidOperationException(base64Image);
}
byte[] bytes = Convert.FromBase64String(base64Image.Substring("data:image/png;base64,".Length));
return(bytes);
}
internal byte[] DrawWindow(mozIDOMWindowProxy window, uint x, uint y, uint w, uint h)
{
Xpcom.AssertCorrectThread();
Init();
var proxy = (mozIDOMWindowProxy)Xpcom.QueryInterface(_webNav.Instance, typeof(mozIDOMWindowProxy).GUID);
SetValue(proxy, "x", x);
SetValue(proxy, "y", y);
SetValue(proxy, "w", w);
SetValue(proxy, "h", h);
new HTMLElement(proxy, (nsISupports)_command.Instance).SetProperty("sourceWin", window);
var element = new HTMLElement(proxy, (nsISupports)_command.Instance);
element.Click();
string base64Image = null;
var dataSet = new DOMStringMap(proxy, new HTMLElement(proxy, (nsISupports)_command.Instance).Dataset);
var drawResult = dataSet.GetProperty <string>("drawResult");
if (drawResult != null)
{
base64Image = drawResult;
}
if (base64Image == null)
{
throw new InvalidOperationException();
}
if (!base64Image.StartsWith("data:image/png;base64,"))
{
throw new InvalidOperationException(base64Image);
}
byte[] bytes = Convert.FromBase64String(base64Image.Substring("data:image/png;base64,".Length));
return(bytes);
}