public void CanRemoveEventListenerBeforeAddingOne()
{
using (var devToolsClient = new DevToolsClient(null))
{
devToolsClient.Network.RequestWillBeSent -= (sender, args) => { };
}
}
/// <summary>
/// Gets a new Instance of the DevTools client
/// </summary>
/// <param name="browser">the IBrowser instance</param>
/// <returns>DevToolsClient</returns>
public static DevToolsClient GetDevToolsClient(this IBrowser browser)
{
var browserHost = browser.GetHost();
WebBrowserExtensions.ThrowExceptionIfBrowserHostNull(browserHost);
var devToolsClient = new DevToolsClient(browser);
var observerRegistration = browserHost.AddDevToolsMessageObserver(devToolsClient);
devToolsClient.SetDevToolsObserverRegistration(observerRegistration);
return(devToolsClient);
}
/// <summary>
/// Calls Page.captureScreenshot without any optional params
/// (Results in PNG image of default viewport)
/// https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-captureScreenshot
/// </summary>
/// <param name="browser">the ChromiumWebBrowser</param>
/// <returns>png encoded image as byte[]</returns>
public static async Task <byte[]> CaptureScreenShotAsPng(this IWebBrowser chromiumWebBrowser)
{
//if (!browser.HasDocument)
//{
// throw new System.Exception("Page hasn't loaded");
//}
var browser = chromiumWebBrowser.GetBrowser();
if (browser == null || browser.IsDisposed)
{
throw new Exception("browser is Null or Disposed");
}
//var param = new Dictionary<string, object>
//{
// { "format", "png" },
//}
//Make sure to dispose of our observer registration when done
// IDevToolsClient tmp = browser.GetDevToolsClient();
DevToolsClient devToolsClient = browser.GetDevToolsClient();
using (devToolsClient)
{
const string methodName = "Page.captureScreenshot";
var result = await devToolsClient.ExecuteDevToolsMethodAsync(methodName);
dynamic response = JsonConvert.DeserializeObject <dynamic>(result.ResponseAsJsonString);
//Success
if (result.Success)
{
return(Convert.FromBase64String((string)response.data));
}
var code = (string)response.code;
var message = (string)response.message;
throw new Exception(code + ":" + message);
}
}
public void IsIEventProxyRemovedFromConcurrentDictionary()
{
const string eventName = "Browser.downloadProgress";
using (var devToolsClient = new DevToolsClient(null))
{
EventHandler <DownloadProgressEventArgs> eventHandler1 = (object sender, DownloadProgressEventArgs args) => { };
EventHandler <DownloadProgressEventArgs> eventHandler2 = (object sender, DownloadProgressEventArgs args) => { };
devToolsClient.AddEventHandler(eventName, eventHandler1);
devToolsClient.AddEventHandler(eventName, eventHandler2);
var hasHandlers = devToolsClient.RemoveEventHandler(eventName, eventHandler1);
Assert.True(hasHandlers);
hasHandlers = devToolsClient.RemoveEventHandler(eventName, eventHandler2);
Assert.False(hasHandlers);
}
}
