/// <summary>
/// 创建cef 打开的——blank实例
/// </summary>
public static Task <CookiedCefBrowser> CreateNewWebBrowser()
{
//使用任务 锁保证事件变为同步
var tcs = new TaskCompletionSource <CookiedCefBrowser>();
// Instruct CEF to not render to a window at all.
CefWindowInfo cefWindowInfo = CefWindowInfo.Create();
cefWindowInfo.SetAsWindowless(IntPtr.Zero, true);
// Settings for the browser window itself (e.g. should JavaScript be enabled?).
var cefBrowserSettings = new CefBrowserSettings();
// Initialize some the cust interactions with the browser process.
// The browser window will be 1280 x 720 (pixels).
var cefClient = new HeadLessCefClient(1, 1);
var loader = cefClient.GetCurrentLoadHandler();
loader.BrowserCreated += (s, e) =>
{
//事件通知 当cef browser 创建完毕
//创建完毕后 保存 browser 对象的实例
var brw = e.Browser;
var etaoBrowser = new CookiedCefBrowser {
CefBrowser = brw, CefLoader = loader, CefClient = cefClient
};
tcs.TrySetResult(etaoBrowser);
};
////注册 加载完毕事件handler
//loader.LoadEnd += this.OnWebBrowserLoadEnd;
// Start up the browser instance.
string url = "about:blank";
CefBrowserHost.CreateBrowser(cefWindowInfo, cefClient, cefBrowserSettings, url);
return(tcs.Task);
}
/// <summary>
/// 创建cef,并 打开制定的网址
/// </summary>
/// <param name="url"></param>
/// <param name="handlerRequest"></param>
/// <param name="timeOut"></param>
/// <returns></returns>
public static Task <CookiedCefBrowser> CreateNewWebBrowser(string url, EventHandler <LoadEndEventArgs> handlerRequest, int timeOut = 5000)
{
//验证是否是合法的URL
var isUrl = InPutValidate.IsUrl(url);
if (!isUrl)
{
return(Task.FromResult <CookiedCefBrowser>(null));
}
//使用任务 锁保证事件变为同步
var tcs = new TaskCompletionSource <CookiedCefBrowser>();
// Instruct CEF to not render to a window at all.
CefWindowInfo cefWindowInfo = CefWindowInfo.Create();
cefWindowInfo.SetAsWindowless(IntPtr.Zero, true);
// Settings for the browser window itself (e.g. should JavaScript be enabled?).
var cefBrowserSettings = new CefBrowserSettings();
// Initialize some the cust interactions with the browser process.
// The browser window will be 1280 x 720 (pixels).
var cefClient = new HeadLessCefClient(1, 1);
var loader = cefClient.GetCurrentLoadHandler();
loader.BrowserCreated += (s, e) =>
{
//事件通知 当cef browser 创建完毕
//创建完毕后 保存 browser 对象的实例
var brw = e.Browser;
var etaoBrowser = new CookiedCefBrowser {
CefBrowser = brw, CefLoader = loader, CefClient = cefClient
};
tcs.TrySetResult(etaoBrowser);
};
if (null != handlerRequest)
{
loader.LoadEnd += handlerRequest;
}
////注册 加载完毕事件handler
//loader.LoadEnd += this.OnWebBrowserLoadEnd;
// Start up the browser instance.
// string url = "about:blank";
CefBrowserHost.CreateBrowser(cefWindowInfo, cefClient, cefBrowserSettings, url);
//设定超时
//超时监听
int timeoutMs = timeOut;
var ctoken = new CancellationTokenSource(timeoutMs);
ctoken.Token.Register(() =>
{
var brw = loader.Browser;
var etaoBrowser = new CookiedCefBrowser {
CefBrowser = brw, CefLoader = loader, CefClient = cefClient
};
//超时结果返回空
tcs.TrySetResult(etaoBrowser);
//tcs.TrySetCanceled();
}, useSynchronizationContext: false);
return(tcs.Task);
}
