private static bool TryParse(XContainer xml, out GoodreadsWork result)
{
result = null;
var workNode = (xml is XElement && (xml as XElement).Name == "work") ? xml as XElement : xml.Descendants("work").FirstOrDefault();
var idNode = (workNode.Element("id")?.FirstNode as XText)?.Value;
int id;
if (idNode == null || !int.TryParse(idNode, out id))
{
id = int.MinValue;
}
var bookNode = workNode.Element("best_book");
GoodreadsBook book;
if (bookNode == null || !GoodreadsBook.TryParse(bookNode, out book))
{
return false;
}
var averageRatingNode = (workNode.Element("average_rating")?.FirstNode as XText)?.Value;
float averageRating;
if (averageRatingNode == null || !float.TryParse(averageRatingNode, out averageRating))
{
result = new GoodreadsWork(id, book);
}
else
{
result = new GoodreadsWork(id, book, averageRating);
}
return true;
}
private void DelayTimerCallback(object sender, EventArgs e)
{
if (Interlocked.Exchange(ref queryQueued, 1) == 0)
{
var requestString = GetRequestString(queryString);
var results = SearchGoodreads(requestString).ToList();
this.okButton.Invoke(new Action(() =>
{
this.okButton.Enabled = false;
}));
bool selected = false;
this.selectionBox.Invoke(new Action(() => {
this.selectionBox.ClearSelected();
this.selectionBox.Items.Clear();
foreach (var result in results)
{
this.selectionBox.Items.Add(result);
if (!selected && result.Equals(this.selectedWork))
{
this.selectionBox.SelectedItem = result;
selected = true;
}
}
if (selected == false)
{
this.selectedWork = null;
}
}));
if (selected)
{
this.okButton.Invoke(new Action(() =>
{
this.okButton.Enabled = true;
}));
}
Interlocked.Exchange(ref queryQueued, 0);
}
}
private void selectionBox_Select(object sender, EventArgs e)
{
var box = sender as ListBox;
this.selectedWork = box.SelectedItem as GoodreadsWork;
this.okButton.Invoke(new Action(() =>
{
this.okButton.Enabled = true;
}));
}
