void LoadData(NSMetadataQuery query)
{
Console.WriteLine("LoadData()");
tasks = new List <TaskDocument>();
foreach (var item in query.Results)
{
Console.WriteLine("Found iCloud document for list");
NSUrl url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
var task = new TaskDocument(url);
task.Open((success) => {
if (success)
{
Console.WriteLine("iCloud document added");
tasks.Add(task);
Reload(); // hacky to keep doing this...
}
else
{
Console.WriteLine("failed to open iCloud document");
}
});
}
}
public override void AwakeFromNib()
{
// no vertical scrolling, we always want to show all rows
predicateEditor.EnclosingScrollView.HasVerticalScroller = true;
previousRowCount = 3;
predicateEditor.AddRow(this);
// put the focus in the first text field
var displayValue = new List <NSObject> (predicateEditor.DisplayValues(1)).Last();
if (displayValue is NSControl)
{
this.Window.MakeFirstResponder((NSResponder)displayValue);
}
// create and initalize our query
query = new NSMetadataQuery();
// setup our Spotlight notifications
var nf = NSNotificationCenter.DefaultCenter;
nf.AddObserver(this, new Selector("queryNotification:"), null, query);
// initialize our Spotlight query, sort by contact name
query.SortDescriptors = new NSSortDescriptor [] { new NSSortDescriptor("kMDItemContactKeywords", true) };
// start with our progress search label empty
progressSearchLabel.StringValue = "";
}
private Task InstigateDocumentLookupAsync(TaskScheduler synchronizationContextTaskScheduler) =>
Task.Factory.StartNew(
() =>
{
var query = new NSMetadataQuery
{
SearchScopes = new NSObject[]
{
NSMetadataQuery.UbiquitousDocumentsScope
},
Predicate = NSPredicate.FromFormat(
"%K == %@",
new NSObject[]
{
NSMetadataQuery.ItemFSNameKey,
new NSString(documentFilename)
})
};
NSNotificationCenter.DefaultCenter.AddObserver(NSMetadataQuery.DidFinishGatheringNotification, this.OnQueryFinished, query);
query.StartQuery();
},
CancellationToken.None,
TaskCreationOptions.None,
synchronizationContextTaskScheduler);
/// <summary>
/// Starts a query to look for the sample Test File.
/// </summary>
private void FindDocument () {
Console.WriteLine ("Finding Document...");
// Create a new query and set it's scope
Query = new NSMetadataQuery();
Query.SearchScopes = new NSObject [] {
NSMetadataQuery.UbiquitousDocumentsScope,
NSMetadataQuery.UbiquitousDataScope,
NSMetadataQuery.AccessibleUbiquitousExternalDocumentsScope
};
// Build a predicate to locate the file by name and attach it to the query
var pred = NSPredicate.FromFormat ("%K == %@"
, new NSObject[] {
NSMetadataQuery.ItemFSNameKey
, new NSString(TestFilename)});
Query.Predicate = pred;
// Register a notification for when the query returns
NSNotificationCenter.DefaultCenter.AddObserver (this
, new Selector("queryDidFinishGathering:")
, NSMetadataQuery.DidFinishGatheringNotification
, Query);
// Start looking for the file
Query.StartQuery ();
Console.WriteLine ("Querying: {0}", Query.IsGathering);
}
/// <summary>
/// Starts a query to look for the sample Test File.
/// </summary>
private void FindDocument()
{
Console.WriteLine("Finding Document...");
// Create a new query and set it's scope
Query = new NSMetadataQuery();
Query.SearchScopes = new NSObject [] {
NSMetadataQuery.UbiquitousDocumentsScope,
NSMetadataQuery.UbiquitousDataScope,
NSMetadataQuery.AccessibleUbiquitousExternalDocumentsScope
};
// Build a predicate to locate the file by name and attach it to the query
var pred = NSPredicate.FromFormat("%K == %@"
, new NSObject[] {
NSMetadataQuery.ItemFSNameKey
, new NSString(TestFilename)
});
Query.Predicate = pred;
// Register a notification for when the query returns
NSNotificationCenter.DefaultCenter.AddObserver(this
, new Selector("queryDidFinishGathering:")
, NSMetadataQuery.DidFinishGatheringNotification
, Query);
// Start looking for the file
Query.StartQuery();
Console.WriteLine("Querying: {0}", Query.IsGathering);
}
/// <summary>
/// Loads the document.
/// </summary>
/// <param name="query">Query.</param>
private void LoadDocument(NSMetadataQuery query)
{
Console.WriteLine("Loading Document...");
// Take action based on the returned record count
switch (query.ResultCount)
{
case 0:
// Create a new document
CreateNewDocument();
break;
case 1:
// Gain access to the url and create a new document from
// that instance
NSMetadataItem item = (NSMetadataItem)query.ResultAtIndex(0);
var url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
// Load the document
OpenDocument(url);
break;
default:
// There has been an issue
Console.WriteLine("Issue: More than one document found...");
break;
}
}
public override void AwakeFromNib ()
{
// no vertical scrolling, we always want to show all rows
predicateEditor.EnclosingScrollView.HasVerticalScroller = true;
previousRowCount = 3;
predicateEditor.AddRow (this);
// put the focus in the first text field
var displayValue = new List<NSObject> (predicateEditor.DisplayValues (1)).Last ();
if (displayValue is NSControl)
this.Window.MakeFirstResponder ((NSResponder)displayValue);
// create and initalize our query
query = new NSMetadataQuery ();
// setup our Spotlight notifications
var nf = NSNotificationCenter.DefaultCenter;
nf.AddObserver (this, new Selector ("queryNotification:"), null, query);
// initialize our Spotlight query, sort by contact name
query.SortDescriptors = new NSSortDescriptor [] { new NSSortDescriptor ("kMDItemContactKeywords",true) };
// start with our progress search label empty
progressSearchLabel.StringValue = "";
}
private void LoadDocument(NSMetadataQuery query)
{
if (query.ResultCount == 1)
{
this.logger.Debug("Query has 1 result.");
var item = (NSMetadataItem)query.ResultAtIndex(0);
var url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
var exerciseCloudDocument = new ExerciseCloudDocument(url);
exerciseCloudDocument.Open(
(success) =>
{
if (!success)
{
this.logger.Error("Failed to open document.");
this.exerciseDocument.OnError(new InvalidOperationException("Failed to open document."));
}
else
{
this.logger.Info("Loaded document.");
}
});
}
else
{
var documentsFolder = Path.Combine(this.ubiquityContainerUrl.Path, "Documents");
var documentPath = Path.Combine(documentsFolder, documentFilename);
var url = new NSUrl(documentPath, isDir: false);
var exerciseCloudDocument = new ExerciseCloudDocument(url)
{
Data = GetDefaultExerciseDocument()
};
exerciseCloudDocument.Save(
exerciseCloudDocument.FileUrl,
UIDocumentSaveOperation.ForCreating,
success =>
{
if (success)
{
this.logger.Info("Successfully created new document.");
this.exerciseDocument.OnNext(exerciseCloudDocument.Data);
}
else
{
this.logger.Error("Failed to create new document.");
this.exerciseDocument.OnError(new InvalidOperationException("Failed to create default document."));
}
});
}
// register for document updates
NSNotificationCenter.DefaultCenter.AddObserver(UIDocument.StateChangedNotification, this.OnDocumentUpdated);
}
void DidFinishGathering(NSNotification notification)
{
Console.WriteLine("DidFinishGathering: notification");
var query = (NSMetadataQuery)notification.Object;
query.DisableUpdates();
query.StopQuery();
NSNotificationCenter.DefaultCenter.RemoveObserver(this, NSMetadataQuery.DidFinishGatheringNotification, query);
LoadData(query);
query = null;
}
void ScreenCaptureChange(NSNotification notification)
{
Console.WriteLine("The " + notification.Name + " message was posted");
if (notification.Name == "NSMetadataQueryDidUpdateNotification")
{
NSMetadataQuery query = notification.Object as NSMetadataQuery;
var latestItem = query != null?query.Results.LastOrDefault() : null;
if (latestItem != null)
{
ItemDropped(latestItem.Path);
}
}
}
Task BeginQuery()
{
if (firstQueryResult != null)
{
var t = firstQueryResult;
firstQueryResult = null;
if (!t.Task.IsCompleted)
{
t.SetException(new Exception("Stopped"));
}
}
if (query != null)
{
query.StopQuery();
}
firstQueryResult = new TaskCompletionSource <object> ();
if (documentsUrl == null)
{
firstQueryResult.SetResult(null);
return(firstQueryResult.Task);
}
var queryString = "";
var head = "";
var args = new List <NSObject> ();
foreach (var e in FileExtensions)
{
queryString += head + "(%K LIKE '*." + e + "')";
head = " OR ";
args.Add(NSMetadataQuery.ItemFSNameKey);
}
query = new NSMetadataQuery();
query.SearchScopes = new NSObject[] { NSMetadataQuery.UbiquitousDocumentsScope };
query.Predicate = NSPredicate.FromFormat(
queryString,
args.ToArray());
Console.WriteLine("START iCLOUD QUERY");
query.StartQuery();
needsRefresh = false;
return(firstQueryResult.Task);
}
void FindDocument () {
Console.WriteLine ("FindDocument");
query = new NSMetadataQuery();
query.SearchScopes = new NSObject [] {NSMetadataQuery.UbiquitousDocumentsScope};
var pred = NSPredicate.FromFormat ("%K == %@"
, new NSObject[] {
NSMetadataQuery.ItemFSNameKey
, new NSString(monkeyDocFilename)});
Console.WriteLine ("Predicate:" + pred.PredicateFormat);
query.Predicate = pred;
NSNotificationCenter.DefaultCenter.AddObserver (this
, new Selector("queryDidFinishGathering:")
, NSMetadataQuery.DidFinishGatheringNotification
, query);
query.StartQuery ();
}
public override void DidFinishLaunching(NSNotification notification)
{
Console.WriteLine("FinishedLaunching(notification={0})", notification);
mainWindowController = new MainWindowController();
InitializeStatusBar();
//InitializeFirebase();
_query = new NSMetadataQuery();
_query.Predicate = NSPredicate.FromFormat("kMDItemIsScreenCapture = 1");
NSNotificationCenter.DefaultCenter.AddObserver(NSMetadataQuery.DidStartGatheringNotification, ScreenCaptureChange, _query);
NSNotificationCenter.DefaultCenter.AddObserver(NSMetadataQuery.DidUpdateNotification, ScreenCaptureChange, _query);
NSNotificationCenter.DefaultCenter.AddObserver(NSMetadataQuery.DidFinishGatheringNotification, ScreenCaptureChange, _query);
_query.StartQuery();
}
void StartQuery()
{
if (documentMetadataQuery == null)
{
documentMetadataQuery = new NSMetadataQuery();
documentMetadataQuery.SearchScopes = new NSObject[] { NSMetadataQuery.UbiquitousDocumentsScope };
string todayListName = AppConfig.SharedAppConfiguration.TodayDocumentNameAndExtension;
documentMetadataQuery.Predicate = NSPredicate.FromFormat("(%K = %@)", NSMetadataQuery.ItemFSNameKey,
(NSString)todayListName);
NSNotificationCenter notificationCenter = NSNotificationCenter.DefaultCenter;
// TODO: subscribtion https://trello.com/c/1RyX6cJL
finishGatheringToken = notificationCenter.AddObserver(NSMetadataQuery.DidFinishGatheringNotification,
HandleMetadataQueryUpdates, documentMetadataQuery);
}
documentMetadataQuery.StartQuery();
}
void FindDocument()
{
Console.WriteLine("FindDocument");
query = new NSMetadataQuery();
query.SearchScopes = new NSObject [] { NSMetadataQuery.UbiquitousDocumentsScope };
var pred = NSPredicate.FromFormat("%K == %@"
, new NSObject[] {
NSMetadataQuery.ItemFSNameKey
, new NSString(monkeyDocFilename)
});
Console.WriteLine("Predicate:" + pred.PredicateFormat);
query.Predicate = pred;
NSNotificationCenter.DefaultCenter.AddObserver(this
, new Selector("queryDidFinishGathering:")
, NSMetadataQuery.DidFinishGatheringNotification
, query);
query.StartQuery();
}
private void LoadFavorites()
{
var query = new NSMetadataQuery();
query.SearchScopes = new NSObject[] { NSMetadataQuery.UbiquitousDocumentsScope };
var pred =
NSPredicate.FromFormat(
"%K == %@",
new NSObject[] {
NSMetadataQuery.ItemFSNameKey,
new NSString(FavoritesService.FavoritesFileName)
});
query.Predicate = pred;
NSNotificationCenter.DefaultCenter.AddObserver(
NSMetadataQuery.DidFinishGatheringNotification,
OnDidFinishGathering,
query);
query.StartQuery();
}
void LoadTasks(NSNotification notification)
{
Console.WriteLine("LoadTasks()");
if (notification != null && notification.UserInfo != null)
{
var u = notification.UserInfo.ValueForKey(new NSString("HasiCloud")) as NSNumber;
if (u != null)
{
Console.WriteLine("Has iCloud notification:" + u.BoolValue);
}
}
if (AppDelegate.HasiCloud)
{
query = new NSMetadataQuery();
query.SearchScopes = new NSObject [] { NSMetadataQuery.QueryUbiquitousDocumentsScope };
var pred = NSPredicate.FromFormat("%K like '*.task'"
, new NSObject[] { NSMetadataQuery.ItemFSNameKey });
//Console.WriteLine ("Predicate:" + pred.PredicateFormat);
query.Predicate = pred;
NSNotificationCenter.DefaultCenter.AddObserver(this
, new Selector("queryDidFinishGathering:")
, NSMetadataQuery.DidFinishGatheringNotification
, query);
query.StartQuery();
}
else
{
Console.WriteLine("HasiCloud not populated yet");
InvokeOnMainThread(() => {
var uia = new UIAlertView("Connecting to iCloud...", "Press the \uE049 button to refresh", null, "OK", null);
uia.Show();
});
}
}
private void LoadFavoritesDocument(NSMetadataQuery query)
{
if (query.ResultCount == 1)
{
var item = (NSMetadataItem)query.ResultAtIndex(0);
var url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
_document = new FavoritesDocument(url);
_document.Open(success =>
{
if (success && _document.Data != null)
{
var favorites = _favoritesService.LoadFavorites();
if (favorites.LastUpdated < _document.Data.LastUpdated)
{
_favoritesService.SaveFavorites(_document.Data);
}
}
});
}
else if (query.ResultCount == 0)
{
SaveFavoritesDocument();
}
}
void StartMetadataQuery()
{
if (documentMetadataQuery == null)
{
NSMetadataQuery metadataQuery = new NSMetadataQuery {
SearchScopes = new NSObject[] {
NSMetadataQuery.UbiquitousDocumentsScope
},
Predicate = NSPredicate.FromFormat("(%K.pathExtension = %@)",
NSMetadataQuery.ItemFSNameKey,
(NSString)AppConfig.ListerFileExtension)
};
documentMetadataQuery = metadataQuery;
NSNotificationCenter notificationCenter = NSNotificationCenter.DefaultCenter;
// TODO: use typed overload https://trello.com/c/1RyX6cJL
finishGatheringToken = notificationCenter.AddObserver(NSMetadataQuery.DidFinishGatheringNotification,
HandleMetadataQueryUpdates, metadataQuery);
updateToken = notificationCenter.AddObserver(NSMetadataQuery.DidUpdateNotification,
HandleMetadataQueryUpdates, metadataQuery);
}
documentMetadataQuery.StartQuery();
}
Task BeginQuery ()
{
if (firstQueryResult != null) {
var t = firstQueryResult;
firstQueryResult = null;
if (!t.Task.IsCompleted)
t.SetException (new Exception ("Stopped"));
}
if (query != null) {
query.StopQuery ();
}
firstQueryResult = new TaskCompletionSource<object> ();
if (documentsUrl == null) {
firstQueryResult.SetResult (null);
return firstQueryResult.Task;
}
var queryString = "";
var head = "";
var args = new List<NSObject> ();
foreach (var e in FileExtensions) {
queryString += head + "(%K LIKE '*." + e + "')";
head = " OR ";
args.Add (NSMetadataQuery.ItemFSNameKey);
}
query = new NSMetadataQuery ();
query.SearchScopes = new NSObject[] { NSMetadataQuery.UbiquitousDocumentsScope };
query.Predicate = NSPredicate.FromFormat (
queryString,
args.ToArray ());
Console.WriteLine ("START iCLOUD QUERY");
query.StartQuery ();
needsRefresh = false;
return firstQueryResult.Task;
}
// Not used in the program was just a test for the Delegate Class
public NSObject MetadataQueryReplacementValueForAttributevalue(NSMetadataQuery query, string attrName, NSObject attrValue)
{
Console.WriteLine("delegate value");
return(null);
}
public override void WillTerminate(NSNotification notification)
{
_query.StopQuery();
_query.Delegate = null;
_query = null;
}
void LoadDocument (NSMetadataQuery metadataQuery)
{
Console.WriteLine ("LoadDocument");
if (metadataQuery.ResultCount == 1) {
var item = (NSMetadataItem)metadataQuery.ResultAtIndex (0);
var url = (NSUrl)item.ValueForAttribute (NSMetadataQuery.ItemURLKey);
doc = new MonkeyDocument (url);
doc.Open (success => {
if (success) {
Console.WriteLine ("iCloud document opened");
Console.WriteLine (" -- {0}", doc.DocumentString);
viewController.DisplayDocument (doc);
} else {
Console.WriteLine ("failed to open iCloud document");
}
});
} else if (metadataQuery.ResultCount == 0) {
// no document exists, CREATE the first one
// for a more realistic iCloud application the user will probably
// create documents as needed, so this bit of code wouldn't be necessary
var docsFolder = Path.Combine (iCloudUrl.Path, "Documents"); // NOTE: Documents folder is user-accessible in Settings
var docPath = Path.Combine (docsFolder, MonkeyDocFilename);
var ubiq = new NSUrl (docPath, false);
Console.WriteLine ("ubiq:" + ubiq.AbsoluteString);
var monkeyDoc = new MonkeyDocument (ubiq);
monkeyDoc.Save (monkeyDoc.FileUrl, UIDocumentSaveOperation.ForCreating, saveSuccess => {
Console.WriteLine ("Save completion:" + saveSuccess);
if (saveSuccess) {
monkeyDoc.Open (openSuccess => {
Console.WriteLine ("Open completion:" + openSuccess);
if (openSuccess) {
Console.WriteLine ("new document for iCloud");
Console.WriteLine (" == " + monkeyDoc.DocumentString);
viewController.DisplayDocument (monkeyDoc);
} else {
Console.WriteLine ("couldn't open");
}
});
} else {
Console.WriteLine ("couldn't save");
}
});
} else {
Console.WriteLine ("Who put all these other UIDocuments here?");
}
}
// Not used in the program was just a test for the Delegate Class
public NSObject MetadataQueryReplacementObjectForResultObject(NSMetadataQuery query, NSMetadataItem result)
{
Console.WriteLine("delegate object");
return(null);
}
void DidFinishGathering(NSNotification notification)
{
Console.WriteLine ("DidFinishGathering: notification");
var query = (NSMetadataQuery)notification.Object;
query.DisableUpdates();
query.StopQuery();
NSNotificationCenter.DefaultCenter.RemoveObserver (this, NSMetadataQuery.DidFinishGatheringNotification, query);
LoadData(query);
query = null;
}
void LoadData(NSMetadataQuery query)
{
Console.WriteLine ("LoadData()");
tasks = new List<TaskDocument>();
foreach (var item in query.Results) {
Console.WriteLine ("Found iCloud document for list");
NSUrl url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
var task = new TaskDocument(url);
task.Open ( (success) => {
if (success) {
Console.WriteLine ("iCloud document added");
tasks.Add (task);
Reload (); // hacky to keep doing this...
} else
Console.WriteLine ("failed to open iCloud document");
});
}
}
void StartQuery()
{
if (documentMetadataQuery == null) {
documentMetadataQuery = new NSMetadataQuery ();
documentMetadataQuery.SearchScopes = new NSObject[]{ NSMetadataQuery.UbiquitousDocumentsScope };
string todayListName = AppConfig.SharedAppConfiguration.TodayDocumentNameAndExtension;
documentMetadataQuery.Predicate = NSPredicate.FromFormat ("(%K = %@)", NSMetadataQuery.ItemFSNameKey,
(NSString)todayListName);
NSNotificationCenter notificationCenter = NSNotificationCenter.DefaultCenter;
// TODO: subscribtion https://trello.com/c/1RyX6cJL
finishGatheringToken = notificationCenter.AddObserver (NSMetadataQuery.DidFinishGatheringNotification,
HandleMetadataQueryUpdates, documentMetadataQuery);
}
documentMetadataQuery.StartQuery ();
}
void LoadTasks(NSNotification notification)
{
Console.WriteLine ("LoadTasks()");
if (notification != null && notification.UserInfo != null) {
var u = notification.UserInfo.ValueForKey(new NSString("HasiCloud")) as NSNumber;
if (u != null)
Console.WriteLine ("Has iCloud notification:"+ u.BoolValue);
}
if (AppDelegate.HasiCloud) {
query = new NSMetadataQuery();
query.SearchScopes = new NSObject [] {NSMetadataQuery.QueryUbiquitousDocumentsScope};
var pred = NSPredicate.FromFormat ("%K like '*.task'"
, new NSObject[] {NSMetadataQuery.ItemFSNameKey});
//Console.WriteLine ("Predicate:" + pred.PredicateFormat);
query.Predicate = pred;
NSNotificationCenter.DefaultCenter.AddObserver (this
, new Selector("queryDidFinishGathering:")
,NSMetadataQuery.DidFinishGatheringNotification
, query);
query.StartQuery ();
} else {
Console.WriteLine ("HasiCloud not populated yet");
InvokeOnMainThread(()=>{
var uia = new UIAlertView("Connecting to iCloud...", "Press the \uE049 button to refresh",null, "OK", null);
uia.Show ();
});
}
}
/// <summary>
/// Loads the document.
/// </summary>
/// <param name="query">Query.</param>
private void LoadDocument (NSMetadataQuery query) {
Console.WriteLine ("Loading Document...");
// Take action based on the returned record count
switch (query.ResultCount) {
case 0:
// Create a new document
CreateNewDocument ();
break;
case 1:
// Gain access to the url and create a new document from
// that instance
NSMetadataItem item = (NSMetadataItem)query.ResultAtIndex (0);
var url = (NSUrl)item.ValueForAttribute (NSMetadataQuery.ItemURLKey);
// Load the document
OpenDocument (url);
break;
default:
// There has been an issue
Console.WriteLine ("Issue: More than one document found...");
break;
}
}
void LoadDocument(NSMetadataQuery query)
{
Console.WriteLine("LoadDocument");
if (query.ResultCount == 1)
{
NSMetadataItem item = (NSMetadataItem)query.ResultAtIndex(0);
var url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
doc = new MonkeyDocument(url);
doc.Open((success) => {
if (success)
{
Console.WriteLine("iCloud document opened");
Console.WriteLine(" -- " + doc.DocumentString);
viewController.DisplayDocument(doc);
}
else
{
Console.WriteLine("failed to open iCloud document");
}
});
}
else if (query.ResultCount == 0)
{
// no document exists, CREATE the first one
// for a more realistic iCloud application the user will probably
// create documents as needed, so this bit of code wouldn't be necessary
var docsFolder = Path.Combine(iCloudUrl.Path, "Documents"); // NOTE: Documents folder is user-accessible in Settings
var docPath = Path.Combine(docsFolder, monkeyDocFilename);
var ubiq = new NSUrl(docPath, false);
Console.WriteLine("ubiq:" + ubiq.AbsoluteString);
var doc = new MonkeyDocument(ubiq);
doc.Save(doc.FileUrl, UIDocumentSaveOperation.ForCreating
, (saveSuccess) => {
Console.WriteLine("Save completion:" + saveSuccess);
if (saveSuccess)
{
doc.Open((openSuccess) => {
Console.WriteLine("Open completion:" + openSuccess);
if (openSuccess)
{
Console.WriteLine("new document for iCloud");
Console.WriteLine(" == " + doc.DocumentString);
viewController.DisplayDocument(doc);
}
else
{
Console.WriteLine("couldn't open");
}
});
}
else
{
Console.WriteLine("couldn't save");
}
});
}
else
{
Console.WriteLine("Who put all these other UIDocuments here?");
}
}
// Not used in the program was just a test for the Delegate Class
public NSObject MetadataQueryReplacementValueForAttributevalue (NSMetadataQuery query, string attrName, NSObject attrValue)
{
Console.WriteLine ("delegate value");
return null;
}
// Not used in the program was just a test for the Delegate Class
public NSObject MetadataQueryReplacementObjectForResultObject (NSMetadataQuery query, NSMetadataItem result)
{
Console.WriteLine ("delegate object");
return null;
}
private Task InstigateDocumentLookupAsync(TaskScheduler synchronizationContextTaskScheduler) =>
Task.Factory.StartNew(
() =>
{
var query = new NSMetadataQuery
{
SearchScopes = new NSObject[]
{
NSMetadataQuery.UbiquitousDocumentsScope
},
Predicate = NSPredicate.FromFormat(
"%K == %@",
new NSObject[]
{
NSMetadataQuery.ItemFSNameKey,
new NSString(documentFilename)
})
};
NSNotificationCenter.DefaultCenter.AddObserver(NSMetadataQuery.DidFinishGatheringNotification, this.OnQueryFinished, query);
query.StartQuery();
},
CancellationToken.None,
TaskCreationOptions.None,
synchronizationContextTaskScheduler);
private void LoadDocument(NSMetadataQuery query)
{
if (query.ResultCount == 1)
{
this.logger.Debug("Query has 1 result.");
var item = (NSMetadataItem)query.ResultAtIndex(0);
var url = (NSUrl)item.ValueForAttribute(NSMetadataQuery.ItemURLKey);
var exerciseCloudDocument = new ExerciseCloudDocument(url);
exerciseCloudDocument.Open(
(success) =>
{
if (!success)
{
this.logger.Error("Failed to open document.");
this.exerciseDocument.OnError(new InvalidOperationException("Failed to open document."));
}
else
{
this.logger.Info("Loaded document.");
}
});
}
else
{
var documentsFolder = Path.Combine(this.ubiquityContainerUrl.Path, "Documents");
var documentPath = Path.Combine(documentsFolder, documentFilename);
var url = new NSUrl(documentPath, isDir: false);
var exerciseCloudDocument = new ExerciseCloudDocument(url)
{
Data = GetDefaultExerciseDocument()
};
exerciseCloudDocument.Save(
exerciseCloudDocument.FileUrl,
UIDocumentSaveOperation.ForCreating,
success =>
{
if (success)
{
this.logger.Info("Successfully created new document.");
this.exerciseDocument.OnNext(exerciseCloudDocument.Data);
}
else
{
this.logger.Error("Failed to create new document.");
this.exerciseDocument.OnError(new InvalidOperationException("Failed to create default document."));
}
});
}
// register for document updates
NSNotificationCenter.DefaultCenter.AddObserver(UIDocument.StateChangedNotification, this.OnDocumentUpdated);
}
void StartMetadataQuery()
{
if (documentMetadataQuery == null) {
NSMetadataQuery metadataQuery = new NSMetadataQuery {
SearchScopes = new NSObject[] {
NSMetadataQuery.UbiquitousDocumentsScope
},
Predicate = NSPredicate.FromFormat ("(%K.pathExtension = %@)",
NSMetadataQuery.ItemFSNameKey,
(NSString)AppConfig.ListerFileExtension)
};
documentMetadataQuery = metadataQuery;
NSNotificationCenter notificationCenter = NSNotificationCenter.DefaultCenter;
// TODO: use typed overload https://trello.com/c/1RyX6cJL
finishGatheringToken = notificationCenter.AddObserver (NSMetadataQuery.DidFinishGatheringNotification,
HandleMetadataQueryUpdates, metadataQuery);
updateToken = notificationCenter.AddObserver (NSMetadataQuery.DidUpdateNotification,
HandleMetadataQueryUpdates, metadataQuery);
}
documentMetadataQuery.StartQuery ();
}
