Bloom.HtmlThumbNailer.OpenTempFileInBrowser C# (CSharp) Method

        private bool OpenTempFileInBrowser(GeckoWebBrowser browser, string filePath)
        {
            var order = (ThumbnailOrder) browser.Tag;
            bool navigationHappened = true;
            if (_syncControl.InvokeRequired)
            {
                using (var waitHandle = new AutoResetEvent(false))
                {
                    order.WaitHandle = waitHandle;
                    _syncControl.BeginInvoke(new Action<string>(path =>
                    {
                        if (!_isolator.NavigateIfIdle(browser, path))
                            navigationHappened = false; // some browser is busy, try again later.
                    }), filePath);
                    waitHandle.WaitOne(10000);
                }
                if (_disposed || !navigationHappened)
                    return false;
                if (!order.Done)
                {
                    Logger.WriteEvent("HtmlThumbNailer ({1}): Timed out on ({0})", order.ThumbNailFilePath,
                        Thread.CurrentThread.ManagedThreadId);
            #if DEBUG
                if (!_thumbnailTimeoutAlreadyDisplayed)
                {
                    _thumbnailTimeoutAlreadyDisplayed = true;
                    _syncControl.Invoke((Action) (() => Debug.Fail("(debug only) Make thumbnail timed out (won't show again)")));
                }
            #endif
                    return false;
                }
            }
            else
            {
                _isolator.Navigate(browser, filePath); // main thread, not async, we really need it now.
                while (!order.Done)
                {
                    Application.DoEvents();
                    Application.RaiseIdle(new EventArgs());		// needed on Linux to avoid deadlock starving browser navigation
                }
            }

            return true;
        }