public Task <JavascriptResponse> EvaluateScriptAsync(int browserId, long frameId, string script, TimeSpan?timeout)
{
var factory = RenderThreadTaskFactory;
var browser = browsers.FirstOrDefault(x => x.BrowserId == browserId);
if (browser == null)
{
return(TaskExtensions.FromResult(new JavascriptResponse
{
Success = false,
Message = string.Format("Browser with Id {0} not found in Render Sub Process.", browserId)
}));
}
var task = factory.StartNew(() =>
{
try
{
var response = browser.DoEvaluateScript(frameId, script);
return(response);
}
catch (Exception ex)
{
return(new JavascriptResponse
{
Success = false,
Message = ex.ToString()
});
}
}, TaskCreationOptions.AttachedToParent);
return(timeout.HasValue ? task.WithTimeout(timeout.Value) : task);
}
/// <summary>
/// Execute a method call over the DevTools protocol. This is a more structured
/// version of SendDevToolsMessage. <see cref="ExecuteDevToolsMethod"/> can only be called on the
/// CEF UI Thread, this method can be called on any thread.
/// See the DevTools protocol documentation at https://chromedevtools.github.io/devtools-protocol/ for details
/// of supported methods and the expected <paramref name="parameters"/> dictionary contents.
/// See the SendDevToolsMessage documentation for additional usage information.
/// </summary>
/// <param name="browser">the browser instance</param>
/// <param name="messageId">is an incremental number that uniquely identifies the message (pass 0 to have the next number assigned
/// automatically based on previous values)</param>
/// <param name="method">is the method name</param>
/// <param name="parameters">are the method parameters represented as a dictionary,
/// which may be empty.</param>
/// <returns>return a Task that can be awaited to obtain the assigned message Id. If the message was
/// unsuccessfully submitted for validation, this value will be 0.</returns>
public static Task <int> ExecuteDevToolsMethodAsync(this IBrowser browser, int messageId, string method, IDictionary <string, object> parameters = null)
{
WebBrowserExtensions.ThrowExceptionIfBrowserNull(browser);
var browserHost = browser.GetHost();
WebBrowserExtensions.ThrowExceptionIfBrowserHostNull(browserHost);
if (CefThread.CurrentlyOnUiThread)
{
return(TaskExtensions.FromResult(browserHost.ExecuteDevToolsMethod(messageId, method, parameters)));
}
if (CefThread.CanExecuteOnUiThread)
{
return(CefThread.ExecuteOnUiThread(() =>
{
return browserHost.ExecuteDevToolsMethod(messageId, method, parameters);
}));
}
//CEF returns 0 to signify failure, we'll do the same.
return(TaskExtensions.FromResult(0));
}
