/// <summary>
/// Extract first child path, i.e. text before first separator.
/// </summary>
/// <param name="path">The inital path.</param>
/// <param name="remainder">The remainder of the path after extraction.</param>
/// <returns>The text before the first separator.</returns>
public static FacebookObjectId ExtractFirstChildPath(string path, out string remainder)
{
string childPath = path;
remainder = String.Empty;
if (!string.IsNullOrEmpty(path))
{
int separatorIndex = path.IndexOf("/", StringComparison.Ordinal);
if (separatorIndex >= 0 && separatorIndex < path.Length)
{
// Separator was found, remainder of the path is passed to the matching child for further lookup
childPath = path.Substring(0, separatorIndex);
if (separatorIndex + 1 < path.Length)
{
remainder = path.Substring(separatorIndex + 1, path.Length - (separatorIndex + 1));
}
}
}
if (!string.IsNullOrEmpty(childPath))
{
childPath = Uri.UnescapeDataString(childPath);
}
return(FacebookObjectId.Create(childPath));
}
private Navigator _TryGetNavigatorFromPhotoUri(Uri uri)
{
if (uri.LocalPath.ToLowerInvariant().Equals("/photo.php"))
{
string userId = null;
string photoId = null;
string id = null;
foreach (string part in uri.Query.Split('?', '&'))
{
if (part.ToLowerInvariant().StartsWith("id="))
{
userId = part.Substring("id=".Length);
}
else if (part.ToLowerInvariant().StartsWith("pid="))
{
photoId = part.Substring("pid=".Length);
}
}
if (userId != null && photoId != null)
{
// Need to do additional parsing here.
// If id is 32 bits then PID = ((id << 32) | pid)
// If id is 64 bits then PID = id + " _ " + pid
ulong userIdLong;
if (ulong.TryParse(userId, out userIdLong))
{
if (userIdLong == (ulong)(uint)userIdLong)
{
uint photoIdInt;
if (uint.TryParse(photoId, out photoIdInt))
{
id = ((userIdLong << 32) | (ulong)photoIdInt).ToString();
}
}
else
{
id = userId + "_" + photoId;
}
}
}
if (!string.IsNullOrEmpty(id))
{
FacebookObjectId fbUserId = FacebookObjectId.Create(userId);
FacebookObjectId fbPhotoId = FacebookObjectId.Create(id);
Navigator nav = ((PhotoAlbumCollectionNavigator)ViewManager.MasterNavigator.PhotoAlbumsNavigator).GetPhotoWithId(fbUserId, fbPhotoId);
if (nav != null)
{
return(nav);
}
}
}
return(null);
}
public MasterNavigator(ViewManager viewManager, FacebookService facebookService, ViewPage startupPage)
{
Verify.IsNotNull(viewManager, "viewManager");
Verify.IsNotNull(facebookService, "facebookService");
_viewManager = viewManager;
HomeNavigator = new HomePage().GetNavigator(null, facebookService.Dispatcher);
PhotoAlbumsNavigator = new PhotoAlbumCollectionNavigator(facebookService.PhotoAlbums, FacebookObjectId.Create("Photo Albums"), null);
FriendsNavigator = new ContactCollectionNavigator(facebookService.Friends, FacebookObjectId.Create("Friends"), null);
ProfileNavigator = new ContactNavigator(facebookService.MeContact, FacebookObjectId.Create("Me"), null);
_children = new[] { HomeNavigator, PhotoAlbumsNavigator, FriendsNavigator, ProfileNavigator };
Navigator startupNavigator = null;
switch (startupPage)
{
case ViewPage.Friends:
startupNavigator = FriendsNavigator;
_startupCollection = facebookService.Friends;
break;
case ViewPage.Newsfeed:
startupNavigator = HomeNavigator;
_startupCollection = facebookService.NewsFeed;
break;
case ViewPage.Photos:
startupNavigator = PhotoAlbumsNavigator;
_startupCollection = facebookService.PhotoAlbums;
break;
case ViewPage.Profile:
startupNavigator = ProfileNavigator;
_startupCollection = null;
break;
}
_loadingPage = new LoadingPage(startupNavigator);
if (_startupCollection != null)
{
_startupCollection.CollectionChanged += _SignalNewsfeedChanged;
}
else
{
_loadingPage.Signal();
}
_loginPage = new LoginPage(facebookService.ApplicationId, facebookService.ApplicationKey, _loadingPage.GetNavigator());
LoginPageNavigator = _loginPage.Navigator;
}
private Navigator _TryGetNavigatorFromProfileUri(Uri uri)
{
FacebookObjectId fbId = default(FacebookObjectId);
// Maybe this is a straight-up profile.php?id=####
if (uri.LocalPath.ToLowerInvariant().Equals("/profile.php"))
{
string id = null;
string idPart = null;
foreach (string part in new[] { "?id=", "&id=" })
{
if (uri.Query.ToLowerInvariant().Contains(part))
{
idPart = part;
break;
}
}
if (idPart != null)
{
id = uri.Query.ToLower();
id = uri.Query.Substring(id.IndexOf(idPart) + idPart.Length);
// Strip out the rest of the query
id = id.Split('&')[0];
fbId = FacebookObjectId.Create(id);
}
if (FacebookObjectId.IsValid(fbId))
{
var me = (FacebookContact)ViewManager.MasterNavigator.ProfileNavigator.Content;
if (me.UserId.Equals(fbId))
{
return(ViewManager.MasterNavigator.ProfileNavigator);
}
Navigator nav = ((ContactCollectionNavigator)ViewManager.MasterNavigator.FriendsNavigator).GetContactWithId(fbId);
if (nav != null)
{
return(nav);
}
}
}
return(null);
}
public SearchNavigator(SearchResults searchResults)
: base(searchResults, FacebookObjectId.Create("[search]" + searchResults.SearchText), null)
{
}
public _Navigator(Navigator parent, HomePage page, Dispatcher dispatcher)
: base(page, FacebookObjectId.Create("[homepage]"), parent)
{
}
public _Navigator(LoginPage page, Dispatcher dispatcher)
: base(page, FacebookObjectId.Create("[Login Page]"), null)
{
}
