private bool OnCanExecuteRaised(object parameter)
{
bool canExecute = true;
var handler = CanExecuteRaised;
if (handler != null)
{
var args = new CanExecuteEventArgs(parameter);
handler(this, args);
canExecute = args.CanExecute;
}
return canExecute;
}
private void OnCanRefresh(object sender, CanExecuteEventArgs args)
{
refreshListCommand = sender as EventCommand;
args.CanExecute = false;
if (this.viewModelWrapper != null)
{
var dir = this.viewModelWrapper.CurrentDirectory;
if (dir != null)
args.CanExecute = dir.CanRefresh();
}
}
private void CanGoToPrevPage(object sender, CanExecuteEventArgs args)
{
OnAppBarCanExecute(sender, args);
args.CanExecute = args.CanExecute && this.viewmodel.CanGoToPrev();
}
private void OnAppBarCanExecute(object sender, CanExecuteEventArgs args)
{
args.CanExecute = false;
if (this.viewmodel != null)
args.CanExecute = true;
}
private void OnRefreshCommandCanExecute(object sender, CanExecuteEventArgs args)
{
args.CanExecute = false;
if (this.viewmodel != null)
args.CanExecute = this.viewmodel.CanRefresh();
}
private void OnRefreshCommandCanExecuteRaised(object sender, CanExecuteEventArgs args)
{
args.CanExecute = false;
if (this.mainPivot != null)
{
var pivotItem = this.mainPivot.SelectedItem as FrameworkElement;
var viewmodel = pivotItem.DataContext as IContentViewModel;
if (viewmodel != null)
args.CanExecute = viewmodel.CanRefresh();
}
}