protected ScriptDialogDeferral CreateScriptDialogDeferral(CefJSDialogCallback callback)
{
var deferral = new ScriptDialogDeferral(this, callback);
_scriptDialogDeferral = deferral;
return(deferral);
}
/// <summary>
/// Initializes a new instance of the <see cref="ScriptDialogOpeningEventArgs"/> class.
/// </summary>
/// <param name="kind">The kind of JavaScript dialog box.</param>
/// <param name="message">The message of the dialog box.</param>
/// <param name="reload">Indicates that the event is fired before page reloading.</param>
/// <param name="callback"></param>
public ScriptDialogOpeningRoutedEventArgs(string message, bool reload, ScriptDialogDeferral callback)
: base(WebView.ScriptDialogOpeningEvent)
{
this.Uri = null;
this.Kind = ScriptDialogKind.BeforeUnload;
this.Message = message;
this.IsReload = reload;
_callback = callback;
}
/// <summary>
/// Initializes a new instance of the <see cref="ScriptDialogOpeningEventArgs"/> class.
/// </summary>
/// <param name="originUrl">The URI of the page that requested the dialog box.</param>
/// <param name="kind">The kind of JavaScript dialog box.</param>
/// <param name="message">The message of the dialog box.</param>
/// <param name="defaultText">The default value to use for the result of the prompt JavaScript function.</param>
/// <param name="callback"></param>
public ScriptDialogOpeningRoutedEventArgs(string originUrl, ScriptDialogKind kind, string message, string defaultText, ScriptDialogDeferral callback)
: base(WebView.ScriptDialogOpeningEvent)
{
this.Uri = Uri.TryCreate(originUrl, UriKind.Absolute, out Uri uri) ? uri : null;
this.Kind = kind;
this.Message = message;
this.DefaultText = defaultText;
_callback = callback;
}
/// <inheritdoc />
protected override bool OnBeforeUnloadDialog(CefBrowser browser, string messageText, bool isReload, CefJSDialogCallback callback)
{
ScriptDialogDeferral dialogDeferral = CreateScriptDialogDeferral(callback);
var ea = new ScriptDialogOpeningRoutedEventArgs(messageText, isReload, dialogDeferral);
WebView.RaiseScriptDialogOpening(ea);
if (!ea.Handled)
{
((IDisposable)dialogDeferral).Dispose();
}
return(ea.Handled);
}
/// <inheritdoc />
protected override bool OnJSDialog(CefBrowser browser, string originUrl, CefJSDialogType dialogType, string messageText, string defaultPromptText, CefJSDialogCallback callback, ref int suppressMessage)
{
ScriptDialogDeferral dialogDeferral = CreateScriptDialogDeferral(callback);
var ea = new ScriptDialogOpeningRoutedEventArgs(originUrl, (ScriptDialogKind)dialogType, messageText, defaultPromptText, dialogDeferral);
WebView.RaiseScriptDialogOpening(ea);
suppressMessage = ea.Suppress ? 1 : 0;
if (!ea.Handled)
{
((IDisposable)dialogDeferral).Dispose();
}
return(ea.Handled);
}
private void HandleScriptDialogOpeningEvent(object sender, IScriptDialogOpeningEventArgs e)
{
if (e.Kind == ScriptDialogKind.Alert)
{
e.Handled = true;
ScriptDialogDeferral dialogCallback = e.GetDeferral();
Dispatcher.InvokeAsync(() => MessageBox.Show(e.Message, "WPF dialog")).Task.ContinueWith(t =>
{
dialogCallback.Accept();
});
}
}
internal bool ReleaseScriptDialogDeferral(ScriptDialogDeferral deferral)
{
return(ReferenceEquals(deferral, Interlocked.CompareExchange(ref _scriptDialogDeferral, null, deferral)));
}
