/// <summary>
/// Gets the content of the current user.
/// <remarks>
/// If folderId is null gets the content from the root level, otherwise the content in the specified folder.
/// </remarks>
/// </summary>
/// <param name="folderId">The id of the folder to retrive content from. If null the root level content is retrieved.</param>
/// <param name="callback"></param>
void GetUserContent(string folderId, EventHandler <UserContentEventArgs> callback)
{
string url = _agol.Url + "content/users/" + _agol.User.Current.Username + (string.IsNullOrEmpty(folderId) ? "" : "/" + folderId) + "?f=json&token=" + _agol.User.Token;
// add a bogus parameter to avoid the caching that happens with the WebClient
//
url += "&tickCount=" + Environment.TickCount.ToString();
WebUtil.OpenReadAsync(url, null, (sender, e) =>
{
if (e.Error != null)
{
callback(null, new UserContentEventArgs()
{
Error = e.Error
});
return;
}
UserContent userContent = WebUtil.ReadObject <UserContent>(e.Result);
callback(null, new UserContentEventArgs()
{
Content = userContent
});
});
}
/// <summary>
/// Gets the folder of a content item if the item is in a folder.
/// </summary>
void GetFolder(ContentItem item, EventHandler <RequestEventArgs> callback)
{
if (_agol.User.Current == null)
{
if (callback != null)
{
callback(null, new RequestEventArgs()
{
Error = new Exception(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ExceptionGetFolderFailedUserSignedIn)
});
}
return;
}
//if the folder has already been determined call back immediately
//
if (item.Folder != null)
{
callback(null, new RequestEventArgs());
return;
}
//get the user's content and find the item
//
GetUserContent(null, (object sender, UserContentEventArgs e) =>
{
if (e.Error != null)
{
callback(null, new RequestEventArgs()
{
Error = e.Error
});
return;
}
UserContent userContent = e.Content;
if (userContent == null)
{
callback(null, new RequestEventArgs()
{
Error = new Exception(string.Format(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ItemNotFound, item.Id))
});
return;
}
//first check if the item is in the content root level
//
if (userContent.ContentItems != null)
{
foreach (ContentItem contentItem in userContent.ContentItems)
{
if (contentItem.Id == item.Id)
{
//create a folder that represents the root folder by assigning an empty id
item.Folder = new ContentFolder()
{
Id = ""
};
callback(null, new RequestEventArgs());
return;
}
}
}
//search folders for the content item
if (userContent.Folders == null || userContent.Folders.Length == 0)
{
callback(null, new RequestEventArgs()
{
Error = new Exception(string.Format(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ItemNotFound, item.Id))
});
}
else
{
bool folderFound = false;
int foldersToSearch = 0;
int foldersSearched = 0;
foreach (ContentFolder folder in userContent.Folders)
{
foldersToSearch++;
ContentFolder folderToSearch = folder; //cache for reference in lambda expression
GetUserContent(folderToSearch.Id, (object sender2, UserContentEventArgs e2) =>
{
foldersSearched++;
if (e2.Content != null && e2.Content.ContentItems != null)
{
foreach (ContentItem contentItem in e2.Content.ContentItems)
{
if (contentItem.Id == item.Id)
{
folderFound = true; //make sure callback is not invoked on subsequent responses
item.Folder = folderToSearch;
callback(null, new RequestEventArgs());
return;
}
}
}
if (foldersSearched == foldersToSearch && !folderFound)
{
callback(null, new RequestEventArgs()
{
Error = new Exception(string.Format(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ItemNotFound, item.Id))
});
return;
}
});
}
}
});
}