/// <summary>
/// Creates and adds a time track objects into the Items collection.
/// </summary>
public async void LoadData() {
var fileList = await ApplicationData.Current.LocalFolder.GetFilesAsync();
var file = fileList.FirstOrDefault(f => f.Name == localFileName);
if (file != null) {
using (var stream = await file.OpenReadAsync()) {
using (var dr = new Windows.Storage.Streams.DataReader(stream)) {
try {
await dr.LoadAsync(unchecked((uint)stream.Size));
var numberOfItems = dr.ReadInt32();
ObservableCollection<TrackItem> loadingItems = new ObservableCollection<TrackItem>();
for (int x = 0; x < numberOfItems; x++) {
TrackItem item = new TrackItem();
item.Start = dr.ReadDateTime();
item.End = dr.ReadDateTime();
int topicLength = dr.ReadInt32();
item.Topic = dr.ReadString((uint)topicLength);
loadingItems.Add(item);
}
bool currentItemExists = dr.ReadBoolean();
TrackItem loadingCurrentItem = null;
if (currentItemExists) {
loadingCurrentItem = new TrackItem();
loadingCurrentItem.Start = dr.ReadDateTime();
int topicLength = dr.ReadInt32();
loadingCurrentItem.Topic = dr.ReadString((uint)topicLength);
}
dr.DetachStream();
Items = loadingItems;
OnPropertyChanged(nameof(Items));
CurrentItem = loadingCurrentItem;
IsDataLoaded = true;
} catch {
try {
await file.DeleteAsync();
} catch { }
CurrentItem = null;
IsDataLoaded = true;
}
}
}
} else {
// Sample data; replace with real data
Items.Add(new TrackItem() {
Topic = "First Tracked Item",
Start = new DateTimeOffset(new DateTime(2015, 11, 5, 9, 0, 0), new TimeSpan(-6, 0, 0)),
End = new DateTimeOffset(new DateTime(2015, 11, 5, 11, 30, 0), new TimeSpan(-6, 0, 0)),
});
Items.Add(new TrackItem() {
Topic = "Second Tracked Item",
Start = new DateTimeOffset(new DateTime(2015, 11, 5, 12, 30, 0), new TimeSpan(-6, 0, 0)),
End = new DateTimeOffset(new DateTime(2015, 11, 5, 17, 0, 0), new TimeSpan(-6, 0, 0)),
});
CurrentItem = null;
this.IsDataLoaded = true;
}
}
public void CreateItem(string topic) {
if (CurrentItem != null) {
CurrentItem.End = DateTimeOffset.Now;
Items.Add(CurrentItem);
}
CurrentItem = new TrackItem() {
Topic = topic,
Start = DateTimeOffset.Now,
End = null,
};
}
