public NavigatorViewModel(IViewModelDependencies dependencies, IZetboxContext dataCtx, ViewModel parent, NavigationScreen root)
: base(dependencies, dataCtx, parent)
{
_current = _root = NavigationEntryViewModel.Fetch(ViewModelFactory, dataCtx, parent, root);
_current.Displayer = this;
_history = new ObservableCollection<NavigationEntryViewModel>() { _current };
_historyRO = new ReadOnlyObservableCollection<NavigationEntryViewModel>(_history);
_location = new ObservableCollection<NavigationEntryViewModel>() { _root };
_locationRO = new ReadOnlyObservableCollection<NavigationEntryViewModel>(_location);
}
public NavigatorViewModel(IViewModelDependencies dependencies, IZetboxContext dataCtx, ViewModel parent, NavigationScreen root)
: base(dependencies, dataCtx, parent)
{
_current = _root = NavigationEntryViewModel.Fetch(ViewModelFactory, dataCtx, parent, root);
_current.Displayer = this;
_history = new ObservableCollection <NavigationEntryViewModel>()
{
_current
};
_historyRO = new ReadOnlyObservableCollection <NavigationEntryViewModel>(_history);
_location = new ObservableCollection <NavigationEntryViewModel>()
{
_root
};
_locationRO = new ReadOnlyObservableCollection <NavigationEntryViewModel>(_location);
}
private static string GetTitle(NavigationEntryViewModel root, NavigationEntryViewModel current)
{
return root.Name + ": " + current.Name;
}
public void NavigateTo(NavigationEntryViewModel screen)
{
CurrentScreen = screen;
}
public void NavigateTo(NavigationEntryViewModel screen)
{
if (CurrentScreen != screen)
{
CurrentScreen = screen;
while (screen.ParentScreen != null)
{
// change CurrentScreen first, to avoid additional navigations
screen.CurrentScreen = CurrentScreen;
screen.ParentScreen.SelectedEntry = screen;
screen = screen.ParentScreen;
}
}
}
private static string GetTitle(NavigationEntryViewModel root, NavigationEntryViewModel current)
{
return(root.Name + ": " + current.Name);
}
public void NavigateTo(NavigationEntryViewModel screen)
{
CurrentScreen = screen;
}
