private void Load(bool refresh)
{
if (lecturesLazyBlock != null)
{
lecturesLazyBlock.Cancel();
lecturesLazyBlock = null;
}
var course = App.Crawler.GetCourse(courseId);
if (!course.Active)
{
if (course.HasFinished)
{
messageTextBlock.Text = "Lectures no longer available";
}
else
{
messageTextBlock.Text = "Lectures not available yet";
}
}
else
{
if (refresh)
{
course = App.Crawler.RefreshCourse(course.Id);
}
lecturesLazyBlock = new LazyBlock <LectureSection[]>(
"lectures",
"No lectures available. Make sure you have accepted the honor code.",
course.LectureSections,
a => a.Length == 0,
new LazyBlockUI <LectureSection[]>(
this,
lectureSections => pivot.ItemsSource = lectureSections,
() => pivot.ItemsSource != null,
messageTextBlock),
false,
null,
success =>
{
if (!success)
{
ErrorReporting.Log("Failed to get lectures");
}
},
null);
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (journeyElementsLazyAsync == null)
{
ErrorReporting.Log("journeyElementsLazyAsync is null");
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
else
{
ErrorReporting.Log("Can not go back");
}
return;
}
if (journeyElementsLazyBlock != null)
{
if (journeyElements.ItemsSource == null)
{
journeyElementsLazyBlock.Refresh();
}
}
else
{
title.Text = trainTitle;
if (title.Text.Length > 40)
{
title.Text = title.Text.Replace(" to ", "\nto ");
}
journeyElementsLazyBlock = new LazyBlock <JourneyElement[]>(
"live progress",
"No information available",
journeyElementsLazyAsync,
items => items.Length == 0,
new LazyBlockUI <JourneyElement>(this, journeyElements, journeyElementsMessageTextBlock, journeyElementsLastUpdatedTextBlock),
Settings.GetBool(Setting.AutoRefresh),
null,
null,
null);
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (journeyElementsLazyAsync == null)
{
ErrorReporting.Log("journeyElementsLazyAsync is null");
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
else
{
ErrorReporting.Log("Can not go back");
}
return;
}
if (journeyElementsLazyBlock != null)
{
if (journeyElements.ItemsSource == null)
{
journeyElementsLazyBlock.Refresh();
}
}
else
{
title.Text = trainTitle;
if (title.Text.Length > 40)
title.Text = title.Text.Replace(" to ", "\nto ");
journeyElementsLazyBlock = new LazyBlock<JourneyElement[]>(
"live progress",
"No information available",
journeyElementsLazyAsync,
items => items.Length == 0,
new LazyBlockUI<JourneyElement>(this, journeyElements, journeyElementsMessageTextBlock, journeyElementsLastUpdatedTextBlock),
Settings.GetBool(Setting.AutoRefresh),
null,
null,
null);
}
}
private void LoadArrivals()
{
if (arrivalsLazyBlock == null)
{
arrivalsLazyBlock = new LazyBlock <Arrival[]>(
"arrivals",
"No more trains today",
departuresAndArrivalsTable.GetArrivals(),
items => items.Length == 0,
new LazyBlockUI <Arrival>(this, arrivals, arrivalsMessageTextBlock, arrivalsLastUpdatedTextBlock),
Settings.GetBool(Setting.AutoRefresh),
null,
null,
null);
}
else if (arrivals.ItemsSource == null)
{
arrivalsLazyBlock.Refresh();
}
}
private void Load(bool refresh)
{
if (refresh)
{
App.Crawler.RefreshCourse(course.Id);
}
lecturesLazyBlock = new LazyBlock <LectureSection[]>(
"lectures",
"No lectures available. Make sure you have acceted the honor code.",
course.LectureSections,
a => a.Length == 0,
new LazyBlockUI <LectureSection[]>(
this,
lectureSections => pivot.ItemsSource = lectureSections,
() => pivot.ItemsSource != null,
messageTextBlock),
false,
null,
null,
null);
}
private void OnLectureVideoClick(object sender, RoutedEventArgs e)
{
if (videoLazyBlock != null)
{
return;
}
var lecture = (Coursera.Lecture)((Button)sender).DataContext;
videoLazyBlock = new LazyBlock <string>(
"video",
null,
lecture.VideoUrl,
_ => false,
new LazyBlockUI <string>(
this,
videoUrl =>
{
try
{
var launcher = new MediaPlayerLauncher();
launcher.Media = new Uri(videoUrl, UriKind.Absolute);
launcher.Show();
}
catch (Exception ex)
{
LittleWatson.ReportException(ex, string.Format("Opening video for lecture '{0}' of course '{1}' ({2})", lecture.Title, pivot.Title, videoUrl));
LittleWatson.CheckForPreviousException(false);
}
},
() => false,
null),
false,
null,
_ => videoLazyBlock = null,
null);
}
private void Load(bool refresh)
{
if (lecturesLazyBlock != null)
{
lecturesLazyBlock.Cancel();
lecturesLazyBlock = null;
}
var course = App.Crawler.GetCourse(courseId);
if (!course.Active)
{
if (course.HasFinished)
{
messageTextBlock.Text = "Lectures no longer available";
}
else
{
messageTextBlock.Text = "Lectures not available yet";
}
}
else
{
if (refresh)
{
course = App.Crawler.RefreshCourse(course.Id);
}
lecturesLazyBlock = new LazyBlock<LectureSection[]>(
"lectures",
"No lectures available. Make sure you have accepted the honor code.",
course.LectureSections,
a => a.Length == 0,
new LazyBlockUI<LectureSection[]>(
this,
lectureSections => pivot.ItemsSource = lectureSections,
() => pivot.ItemsSource != null,
messageTextBlock),
false,
null,
success =>
{
if (!success)
{
ErrorReporting.Log("Failed to get lectures");
}
},
null);
}
}
private void LoadDepartures()
{
if (departuresLazyBlock == null)
{
departuresLazyBlock = new LazyBlock<Departure[]>(
"departures",
"No more trains today",
departuresAndArrivalsTable.GetDepartures(),
items => items.Length == 0,
new LazyBlockUI<Departure>(this, departures, departuresMessageTextBlock, departuresLastUpdatedTextBlock),
Settings.GetBool(Setting.AutoRefresh),
null,
null,
null);
}
else if (departures.ItemsSource == null)
{
departuresLazyBlock.Refresh();
}
}
private void LoadNearestStations()
{
if (nearestLazyBlock != null)
{
nearestLazyBlock.Cancel();
}
var lazyBlockUI = new LazyBlockUI <Tuple <double, Station> >(this, nearestStations, nearestStationsMessageTextBlock, null);
LatLong from;
if (fromStation == null)
{
var currentPosition = LocationService.CurrentPosition;
if (!Settings.GetBool(Setting.LocationServicesEnabled))
{
lazyBlockUI.SetItems(null);
lazyBlockUI.SetLocalProgressMessage("Locations Services are disabled.\nYou can enable them in the Settings.");
nearestLazyBlock = null;
return;
}
else if (currentPosition == null || currentPosition.IsUnknown)
{
lazyBlockUI.SetLocalProgressMessage("Acquiring position...");
lazyBlockUI.SetGlobalProgressMessage("Acquiring position...");
nearestLazyBlock = null;
return;
}
from = LatLong.Create(currentPosition.Latitude, currentPosition.Longitude);
}
else
{
from = fromStation.Location;
}
lazyBlockUI.SetLocalProgressMessage("");
lazyBlockUI.SetGlobalProgressMessage("");
nearestLazyBlock = new LazyBlock <Tuple <double, Station>[]>(
"nearest stations",
"No nearby stations",
Stations.GetNearestAsync(from, 150),
items => items.Length == 0,
lazyBlockUI,
false,
null,
null,
nearestUnfiltered =>
{
var nearestFiltered = nearestUnfiltered.AsEnumerable();
if (fromStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != fromStation.Code);
}
if (excludeStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != excludeStation);
}
return(nearestFiltered.ToArray());
});
}
private void LoadCourses(string email, string password, bool refresh)
{
if (App.Crawler == null)
{
App.Crawler = new Crawler(email, password, Cache.GetFiles(), Cache.SaveFile, DownloadInfo.Create);
}
if (refresh)
{
App.Crawler.RefreshCourses();
}
if (coursesLazyBlock != null)
{
coursesLazyBlock.Cancel();
}
coursesLazyBlock = new LazyBlock<Course[]>(
"courses",
null,
App.Crawler.Courses,
_ => false,
new LazyBlockUI<Course[]>(
this,
courses =>
{
var active = new List<Course>();
var upcoming = new List<Course>();
var finished = new List<Course>();
foreach (var course in courses)
{
if (course.HasFinished)
finished.Add(course);
else if (course.Active)
active.Add(course);
else
upcoming.Add(course);
}
activeCourses.ItemsSource = active;
upcomingCourses.ItemsSource = upcoming;
finishedCourses.ItemsSource = finished;
activeCoursesCourseCatalogButton.Visibility = activeCoursesEmptyMessage.Visibility = active.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
upcomingCoursesCourseCatalogButton.Visibility = upcomingCoursesEmptyMessage.Visibility = upcoming.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
finishedCoursesEmptyMessage.Visibility = finished.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
if (active.Count == 0)
{
if (upcoming.Count == 0)
{
pivot.SelectedIndex = 2;
}
else
{
pivot.SelectedIndex = 1;
}
}
},
() => activeCourses.ItemsSource != null,
messageTextBlock),
false,
_ =>
{
activeCoursesEmptyMessage.Visibility = Visibility.Collapsed;
upcomingCoursesEmptyMessage.Visibility = Visibility.Collapsed;
finishedCoursesEmptyMessage.Visibility = Visibility.Collapsed;
},
success =>
{
if (!success)
{
ErrorReporting.Log("Failed to get courses");
}
},
null);
}
private void LoadNearestStations()
{
if (nearestLazyBlock != null)
{
nearestLazyBlock.Cancel();
}
var lazyBlockUI = new LazyBlockUI<Tuple<double, Station>>(this, nearestStations, nearestStationsMessageTextBlock, null);
LatLong from;
if (fromStation == null)
{
var currentPosition = LocationService.CurrentPosition;
if (!Settings.GetBool(Setting.LocationServicesEnabled))
{
lazyBlockUI.SetItems(null);
lazyBlockUI.SetLocalProgressMessage("Locations Services are disabled.\nYou can enable them in the Settings.");
nearestLazyBlock = null;
return;
}
else if (currentPosition == null || currentPosition.IsUnknown)
{
lazyBlockUI.SetLocalProgressMessage("Acquiring position...");
lazyBlockUI.SetGlobalProgressMessage("Acquiring position...");
nearestLazyBlock = null;
return;
}
from = LatLong.Create(currentPosition.Latitude, currentPosition.Longitude);
}
else
{
from = fromStation.Location;
}
lazyBlockUI.SetLocalProgressMessage("");
lazyBlockUI.SetGlobalProgressMessage("");
nearestLazyBlock = new LazyBlock<Tuple<double, Station>[]>(
"nearest stations",
"No nearby stations",
Stations.GetNearestAsync(from, 150),
items => items.Length == 0,
lazyBlockUI,
false,
null,
null,
nearestUnfiltered =>
{
var nearestFiltered = nearestUnfiltered.AsEnumerable();
if (fromStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != fromStation.Code);
}
if (excludeStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != excludeStation);
}
return nearestFiltered.ToArray();
});
}
private void LoadCourses(string email, string password, bool refresh)
{
if (App.Crawler == null)
{
App.Crawler = new Crawler(email, password, Cache.GetFiles(), Cache.SaveFile, DownloadInfo.Create);
}
if (refresh)
{
App.Crawler.RefreshCourses();
}
if (coursesLazyBlock != null)
{
coursesLazyBlock.Cancel();
}
coursesLazyBlock = new LazyBlock <Course[]>(
"courses",
null,
App.Crawler.Courses,
_ => false,
new LazyBlockUI <Course[]>(
this,
courses =>
{
var active = new List <Course>();
var upcoming = new List <Course>();
var finished = new List <Course>();
foreach (var course in courses)
{
if (course.HasFinished)
{
finished.Add(course);
}
else if (course.Active)
{
active.Add(course);
}
else
{
upcoming.Add(course);
}
}
activeCourses.ItemsSource = active;
upcomingCourses.ItemsSource = upcoming;
finishedCourses.ItemsSource = finished;
activeCoursesCourseCatalogButton.Visibility = activeCoursesEmptyMessage.Visibility = active.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
upcomingCoursesCourseCatalogButton.Visibility = upcomingCoursesEmptyMessage.Visibility = upcoming.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
finishedCoursesEmptyMessage.Visibility = finished.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
if (active.Count == 0)
{
if (upcoming.Count == 0)
{
pivot.SelectedIndex = 2;
}
else
{
pivot.SelectedIndex = 1;
}
}
},
() => activeCourses.ItemsSource != null,
messageTextBlock),
false,
_ =>
{
activeCoursesEmptyMessage.Visibility = Visibility.Collapsed;
upcomingCoursesEmptyMessage.Visibility = Visibility.Collapsed;
finishedCoursesEmptyMessage.Visibility = Visibility.Collapsed;
},
success =>
{
if (!success)
{
ErrorReporting.Log("Failed to get courses");
}
},
null);
}
private void LoadCourses(string email, string password, bool refresh)
{
if (App.Crawler == null)
{
App.Crawler = new Crawler(email, password, Cache.GetFiles(), Cache.SaveFile);
}
if (refresh)
{
App.Crawler.RefreshCourses();
}
coursesLazyBlock = new LazyBlock <Course[]>(
"courses",
"No courses",
App.Crawler.Courses,
a => a.Length == 0,
new LazyBlockUI <Course[]>(
this,
courses =>
{
var active = new List <Coursera.Course>();
var upcoming = new List <Coursera.Course>();
var completed = new List <Coursera.Course>();
foreach (var course in courses)
{
if (course.HasFinished)
{
completed.Add(course);
}
else if (course.HasStarted)
{
active.Add(course);
}
else
{
upcoming.Add(course);
}
}
activeCourses.ItemsSource = active;
upcomingCourses.ItemsSource = upcoming;
completedCourses.ItemsSource = completed;
activeCoursesEmptyMessage.Visibility = active.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
upcomingCoursesEmptyMessage.Visibility = upcoming.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
completedCoursesEmptyMessage.Visibility = completed.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
if (active.Count == 0)
{
if (upcoming.Count == 0)
{
pivot.SelectedIndex = 2;
}
else
{
pivot.SelectedIndex = 1;
}
}
},
() => activeCourses.ItemsSource != null,
messageTextBlock),
false,
_ =>
{
activeCoursesEmptyMessage.Visibility = Visibility.Collapsed;
upcomingCoursesEmptyMessage.Visibility = Visibility.Collapsed;
completedCoursesEmptyMessage.Visibility = Visibility.Collapsed;
},
null,
null);
}