/// <inheritdoc cref="IFrame.WaitForFunctionAsync(string, WaitForFunctionOptions, object[])"/>
public Task <IJSHandle> WaitForFunctionAsync(string pageFunction, WaitForFunctionOptions options = null, params object[] args)
{
options ??= new WaitForFunctionOptions {
Timeout = Page.DefaultTimeout
};
var task = Dom.GetWaitForFunctionTask(null, pageFunction, options, args);
return(ScheduleRerunnableTaskAsync(task, ContextType.Main, options.Timeout, $"Function \"{pageFunction}\""));
}
/// <inheritdoc /> public Task <IJSHandle> WaitForFunctionAsync(string pageFunction, WaitForFunctionOptions options = null, params object[] args) => throw new NotImplementedException();
/// <inheritdoc />
public Task <IJSHandle> WaitForSelectorEvaluateAsync(
string selector,
string script,
WaitForFunctionOptions options = null,
params object[] args) => throw new NotImplementedException();
internal static Func <IFrameExecutionContext, Task <IJSHandle> > GetWaitForFunctionTask(string selector, string pageFunction, WaitForFunctionOptions options, params object[] args)
{
var polling = options?.Polling ?? WaitForFunctionPollingOption.Raf;
string predicateBody = pageFunction.IsJavascriptFunction() ? $"return ({pageFunction})(...args)" : $"return ({pageFunction})";
if (selector != null)
{
selector = NormalizeSelector(selector);
}
return(async context => await context.EvaluateHandleAsync(
@"(injected, selector, predicateBody, polling, timeout, ...args) => {
const innerPredicate = new Function('...args', predicateBody);
if (polling === 'raf')
return injected.pollRaf(selector, predicate, timeout);
if (polling === 'mutation')
return injected.pollMutation(selector, predicate, timeout);
return injected.pollInterval(selector, polling, predicate, timeout);
function predicate(element) {
if (selector === undefined)
return innerPredicate(...args);
return innerPredicate(element, ...args);
}
}",
args.Prepend(await context.GetInjectedAsync().ConfigureAwait(false), selector, predicateBody, polling)).ConfigureAwait(false));
}
/// <inheritdoc cref="IFrame.WaitForSelectorEvaluateAsync(string, string, WaitForFunctionOptions, object[])"/>
public async Task <IJSHandle> WaitForSelectorEvaluateAsync(string selector, string pageFunction, WaitForFunctionOptions options = null, params object[] args)
{
options ??= new WaitForFunctionOptions {
Timeout = Page.DefaultTimeout
};
var task = Dom.GetWaitForFunctionTask(selector, pageFunction, options, args);
return(await ScheduleRerunnableTaskAsync(task, ContextType.Main, options.Timeout).ConfigureAwait(false));
}