public AppearanceManagerViewModel(IAppearanceSettings settings)
{
_settings = settings;
_themes = new ObservableCollection <ThemeResource>(AppearanceManager.GetThemes());
_selectedTheme = (from t in _themes where t.Name == _settings.Theme select t).FirstOrDefault();
if (_selectedTheme == null)
{
SelectedTheme = CurrentTheme;
}
SelectedTheme.Apply();
_accents = new ObservableCollection <AccentResource>(AppearanceManager.GetAccents());
_accentGroups = new ObservableCollection <string>((from a in _accents orderby a.SortOrder ascending select a.AccentGroup).Distinct().ToList());
_accentGroupings = new CollectionViewSource {
Source = _accents
};
_accentGroupings.Filter += AccentGroupingsOnFilter;
_accentGroupings.SortDescriptions.Add(new SortDescription("SortOrder", ListSortDirection.Ascending));
_selectedAccent = (from a in _accents where a.Name == _settings.Accent select a).FirstOrDefault();
if (_selectedAccent == null)
{
SelectedAccent = CurrentAccent;
}
SelectedAccent.Apply();
ApplyCommand = new DelegateCommand(Apply, CanExecuteApply);
CancelCommand = new DelegateCommand(Cancel, CanExecuteCancel);
}
private void Apply()
{
_isApplying = true;
RaisePropertyChanged("CanCancel");
RaisePropertyChanged("CanApply");
ApplyCommand.RaiseCanExecuteChanged();
if (!Equals(SelectedAccent, CurrentAccent))
{
SelectedAccent.Apply();
}
if (!Equals(SelectedTheme, CurrentTheme))
{
SelectedTheme.Apply();
}
_settings.Save();
_isApplying = false;
RaisePropertyChanged("CanCancel");
RaisePropertyChanged("CanApply");
ApplyCommand.RaiseCanExecuteChanged();
}