public MainPageViewModel()
{
MessagingCenter.Subscribe <NoteDetailsViewModel>(this, "Unselect", (sender) =>
{
SelectedNote = null;
});
AddCommand = new Command(() =>
{
if (NewNote != "" && NewNote != null)
{
NoteItem item = new NoteItem();
if (AllNotes.Count == 0)
{
item.Id = 1;
}
else
{
item.Id = AllNotes.LastOrDefault().Id + 1;
}
item.NoteText = NewNote;
AllNotes.Add(item);
AddToDB(item);
NewNote = string.Empty;
}
});
SelectedNoteCommand = new Command(async() =>
{
if (SelectedNote != null)
{
var noteDetailsVM = new NoteDetailsViewModel(SelectedNote, AllNotes, ApiURL);
var noteDetailsPage = new NoteDetails();
noteDetailsPage.BindingContext = noteDetailsVM;
await Application.Current.MainPage.Navigation.PushAsync(noteDetailsPage);
}
});
}
public NoteDetailsViewModel(NoteItem note, ObservableCollection <NoteItem> collection, string apiurl)
{
selectedNote = note;
notes = collection;
apiURL = apiurl;
MessagingCenter.Subscribe <EditNoteViewModel, NoteItem>(this, "Updated Note", (sender, arg) =>
{
MessagingCenter.Unsubscribe <EditNoteViewModel>(this, "Updated Note");
UpdateDB(arg);
SelectedNote = arg;
});
EditCommand = new Command(async() =>
{
var editNoteVM = new EditNoteViewModel(SelectedNote, Notes);
var editNotePage = new EditNote();
editNotePage.BindingContext = editNoteVM;
await Application.Current.MainPage.Navigation.PushAsync(editNotePage);
});
DeleteCommand = new Command(async() =>
{
DeleteFromDB(Notes.ElementAt(Notes.IndexOf(SelectedNote)));
Notes.Remove(Notes.ElementAt(Notes.IndexOf(SelectedNote)));
//this.Notes.CollectionChanged += this.Notes.CollectionChanged;
//NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)
await Application.Current.MainPage.Navigation.PopAsync();
});
DismissCommand = new Command(async() =>
{
MessagingCenter.Send(this, "Unselect");
await Application.Current.MainPage.Navigation.PopAsync();
});
}
public EditNoteViewModel(NoteItem oldText, ObservableCollection <NoteItem> collection)
{
editText = oldText;
notes = collection;
previousText = oldText.NoteText;
previousId = oldText.Id;
ConfirmCommand = new Command(async() =>
{
foreach (NoteItem item in Notes)
{
if (item.Id == previousId)
{
updatedItem = item;
}
}
Notes[Notes.IndexOf(updatedItem)] = EditText;
MessagingCenter.Send(this, "Updated Note", EditText);
/* var noteDetailsVM = new NoteDetailsViewModel(EditText, Notes);
* var noteDetailsPage = new NoteDetails();
* noteDetailsPage.BindingContext = noteDetailsVM;
* Application.Current.MainPage.Navigation
* .InsertPageBefore(noteDetailsPage, Application.Current.MainPage.Navigation.NavigationStack.LastOrDefault());
*
* Application.Current.MainPage.Navigation
* .RemovePage(Application.Current.MainPage.Navigation.NavigationStack.LastOrDefault());*/
await Application.Current.MainPage.Navigation.PopAsync();
});
CancelCommand = new Command(async() =>
{
EditText.NoteText = previousText;
await Application.Current.MainPage.Navigation.PopAsync();
});
}