protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
//
// Get the person object from the intent
//
Person person;
if (Intent.HasExtra ("Person")) {
var serializer = new System.Xml.Serialization.XmlSerializer (typeof (Person));
var personBytes = Intent.GetByteArrayExtra ("Person");
person = (Person)serializer.Deserialize (new MemoryStream (personBytes));
} else {
person = new Person ();
}
//
// Load the View Model
//
viewModel = new PersonViewModel (person, Android.Application.SharedFavoritesRepository);
viewModel.PropertyChanged += HandleViewModelPropertyChanged;
//
// Setup the UI
//
ListView.Divider = null;
ListAdapter = new PersonAdapter (viewModel);
Title = person.SafeDisplayName;
}
/// <summary>
/// Creates the intent that can be used to present this activity given
/// a specific Person object.
/// </summary>
/// <returns>
/// The intent.
/// </returns>
/// <param name='person'>
/// The Person to show in this activity.
/// </param>
public static Intent CreateIntent (Context context, Person person)
{
var intent = new Intent (context, typeof (PersonActivity));
var serializer = new System.Xml.Serialization.XmlSerializer (typeof (Person));
var personStream = new MemoryStream ();
serializer.Serialize (personStream, person);
intent.PutExtra ("Person", personStream.ToArray ());
return intent;
}
public PersonViewController(Person person, IFavoritesRepository favoritesRepository)
: base(UITableViewStyle.Grouped)
{
personViewModel = new PersonViewModel (person, favoritesRepository);
Title = person.SafeFirstName;
TableView.DataSource = new PersonDataSource (this);
TableView.Delegate = new PersonDelegate (this);
}
void StartImageDownload(UITableView tableView, NSIndexPath indexPath, Person person)
{
if (imageDownloadsInProgress.Contains (person.Id))
return;
imageDownloadsInProgress.Add (person.Id);
imageDownloader.GetImageAsync (Gravatar.GetImageUrl (person.Email, 88)).ContinueWith (t => {
if (!t.IsFaulted)
FinishImageDownload (tableView, indexPath, person, (UIImage)t.Result);
}, TaskScheduler.FromCurrentSynchronizationContext ());
}
void FinishImageDownload(UITableView tableView, NSIndexPath indexPath, Person person, UIImage image)
{
images [person.Id] = image;
imageDownloadsInProgress.Remove (person.Id);
if (indexPath.Section < Groups.Count &&
indexPath.Row < Groups [indexPath.Section].People.Count) {
var cell = tableView.CellAt (indexPath);
if (cell != null)
cell.ImageView.Image = image;
}
}
public void Delete (Person person)
{
var newPeopleQ = from p in People
where p.Id != person.Id
select p;
var newPeople = newPeopleQ.ToList ();
var n = People.Count - newPeople.Count;
People = newPeople;
if (n != 0) {
var task = Task.Run (async () => {
await Commit ();
});
task.Wait ();
}
}
public void InsertOrUpdate (Person person)
{
var existing = People.FirstOrDefault (x => x.Id == person.Id);
if (existing != null)
People.Remove (existing);
People.Add (person);
var task = Task.Run (async () => {
await Commit ();
});
task.Wait ();
}
public bool IsFavorite (Person person)
{
return People.Any (x => x.Id == person.Id);
}
public void Delete (Person person)
{
var newPeopleQ = from p in People where p.Id != person.Id select p;
var newPeople = newPeopleQ.ToList ();
var n = People.Count - newPeople.Count;
People = newPeople;
if (n != 0) {
Commit ().Wait();
}
}
public void InsertOrUpdate (Person person)
{
var existing = People.FirstOrDefault (x => x.Id == person.Id);
if (existing != null) {
People.Remove (existing);
}
People.Add (person);
Commit ().Wait();
}
public PersonItem (Person person, bool isLastPersonInGroup)
{
Person = person;
IsLastPersonInGroup = isLastPersonInGroup;
}
void FinishImageDownload (ListView listView, int position, Person person, Bitmap image)
{
images [person.Id] = image;
imageDownloadsInProgress.Remove (person.Id);
var personItem = (position < items.Count) ?
items [position] as PersonItem :
null;
if (personItem != null && personItem.Person == person) {
var firstPostion = listView.FirstVisiblePosition - listView.HeaderViewsCount;
var childIndex = position - firstPostion;
if (0 <= childIndex && childIndex < listView.ChildCount) {
var view = listView.GetChildAt (childIndex);
var imageButton = view.FindViewById<ImageButton> (Resource.Id.ImageButton);
imageButton.SetImageBitmap (image);
}
}
}
void StartImageDownload (ListView listView, int position, Person person)
{
if (imageDownloadsInProgress.Contains (person.Id))
return;
var url = Gravatar.GetImageUrl (person.Email, 100);
if (imageDownloader.HasLocallyCachedCopy (url)) {
var image = imageDownloader.GetImage (url);
FinishImageDownload (listView, position, person, (Bitmap)image);
} else {
imageDownloadsInProgress.Add (person.Id);
imageDownloader.GetImageAsync (url).ContinueWith (t => {
if (!t.IsFaulted) {
FinishImageDownload (listView, position, person, (Bitmap)t.Result);
}
}, TaskScheduler.FromCurrentSynchronizationContext ());
}
}
// For handling properties with multiple entries
IList<Person> Search (string searchFilter, int sizeLimit)
{
var results = new List<Person> ();
try {
//
// Query the server
//
var lsc = conn.Search (
SearchBase,
LdapConnection.SCOPE_SUB,
searchFilter,
null,
false,
new LdapSearchConstraints (0, 0, LdapSearchConstraints.DEREF_NEVER, sizeLimit, false, 1, null, 10));
while (lsc.hasMore ()) {
var nextEntry = lsc.next ();
//
// Create the person and load all their properties
//
// This code uses Reflection to create a mapping between LDAP
// attribute types and .NET properties. See PropertyAttribute and
// the static constructor of this class for details.
//
var person = new Person {
Id = nextEntry.DN
};
foreach (LdapAttribute attribute in nextEntry.getAttributeSet ()) {
var attributeName = attribute.Name;
var val = attribute.StringValue;
PropertyInfo p;
if (propertyFromLdap.TryGetValue (attributeName, out p)) {
if (ListType.IsAssignableFrom (p.PropertyType)) {
var list = (List<string>)p.GetValue (person, null);
list.Add (val);
} else {
p.SetValue (person, val, null);
}
}
}
//
// Make sure we only load people by looking for a last name
//
if (!string.IsNullOrEmpty (person.LastName))
results.Add (person);
}
} catch (LdapException e) {
if (e.ResultCode != 4)
throw;
}
return results;
}
void CreateTile (Person person, Uri imageUri)
{
var uri = "/PersonPage.xaml?id=" + Uri.EscapeDataString (person.Id);
// Make sure they are in our favorites list
if (!ViewModel.IsFavorite) {
ViewModel.ToggleFavorite ();
}
// Delete any old tile
var foundTile = ShellTile.ActiveTiles.FirstOrDefault (x => x.NavigationUri.ToString ().Contains (uri));
if (foundTile != null) {
foundTile.Delete ();
}
// Create the new tile
var tile = new StandardTileData {
Title = person.SafeDisplayName,
BackContent = person.TitleAndDepartment,
BackTitle = person.SafeDisplayName,
BackgroundImage = (imageUri != null) ? imageUri : new Uri ("/Background.png", UriKind.RelativeOrAbsolute),
};
ShellTile.Create (new Uri (uri, UriKind.Relative), tile);
}