/// <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;
}
});
}
}
});
}
public static bool IsSubfolder(ContentFolder folder)
{
return (folder != null && !string.IsNullOrEmpty(folder.Id));
}
/// <summary>
/// Deletes the content item specified by its Id.
/// </summary>
public void Delete(ContentItem item, EventHandler <ContentItemEventArgs> callback)
{
if (_agol.User.Current == null)
{
if (callback != null)
{
callback(null, new ContentItemEventArgs()
{
Error = new Exception(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ExceptionDeleteFailedUserSignIn), Id = item.Id
});
}
return;
}
//find out if the item is located in a folder
//
GetFolder(item, (object sender, RequestEventArgs e) =>
{
if (e.Error != null)
{
if (callback != null)
{
callback(null, new ContentItemEventArgs()
{
Error = e.Error
});
}
return;
}
string folderUrl = ContentFolder.IsSubfolder(item.Folder) ? "/" + item.Folder.Id : "";
string url = _agol.Url + "/content/users/" + _agol.User.Current.Username + folderUrl + "/items/" + item.Id + "/delete?f=json&token=" + _agol.User.Token;
WebUtil.UploadStringAsync(url, null, "", (object sender2, UploadStringCompletedEventArgs e2) =>
{
if (e2.Error != null)
{
if (callback != null)
{
callback(null, new ContentItemEventArgs()
{
Error = e2.Error, Id = item.Id
});
}
return;
}
Success result = WebUtil.ReadObject <Success>(new MemoryStream(Encoding.UTF8.GetBytes(e2.Result)));
ContentItemEventArgs eventArgs = new ContentItemEventArgs()
{
Error = (result == null || !result.Succeeded) ? new Exception(ESRI.ArcGIS.Mapping.Controls.ArcGISOnline.Resources.Strings.ExceptionDeleteFailed) : null, Id = item.Id
};
if (callback != null)
{
callback(null, eventArgs);
}
//raise event
if (ItemDeleted != null)
{
ItemDeleted(null, eventArgs);
}
});
});
}
