private void OnSelectedPageChanged()
{
try
{
var index = Configuration.Pages.IndexOf(SelectedPage);
for (int i = 0; i < index; i++)
{
var page = Configuration.Pages.ElementAt(i);
if (!page.Validate())
{
Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.ContextIdle, new Action(() => SelectedPage = page));
return;
}
}
IsLastPage = index == Configuration.Pages.Count - 1;
}
finally
{
NextPageCommand.RaiseCanExecuteChanged();
PrevPageCommand.RaiseCanExecuteChanged();
}
}
public GameScreenSelectViewModel(List <Rectangle> rectList, SelectGameWindowAction dg)
{
this.rectList = rectList;
this.dg = dg;
// プロパティを設定
PageInfoStr = RectIndex.Select(x => $"[{x + 1}/{rectList.Count}] {Utility.GetRectStr(rectList[x])}").ToReadOnlyReactiveProperty();
GameWindowPage = RectIndex.Select(x => (BitmapSource)ScreenShotProvider.GetScreenBitmap(rectList[x]).ToImageSource()).ToReadOnlyReactiveProperty();
// コマンドを設定
PrevPageCommand.Subscribe(_ => {
RectIndex.Value = (rectList.Count + RectIndex.Value - 1) % rectList.Count;
});
NextPageCommand.Subscribe(_ => {
RectIndex.Value = (rectList.Count + RectIndex.Value + 1) % rectList.Count;
});
SelectPageCommand.Subscribe(_ => {
dg(rectList[RectIndex.Value]);
CloseWindow.Value = true;
});
CancelCommand.Subscribe(_ => {
dg(null);
CloseWindow.Value = true;
});
}
private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
NextPageCommand.RaiseCanExecuteChanged();
PrevPageCommand.RaiseCanExecuteChanged();
ButtonNext.Visibility = NextPageCommand.CanExecute(null) ? Visibility.Visible : Visibility.Hidden;
ButtonPrev.Visibility = PrevPageCommand.CanExecute(null) ? Visibility.Visible : Visibility.Hidden;
LabelPage.Content = PageCount == 1 ? null : $"{Page + 1}/{PageCount}";
if (ItemsSource == null)
{
return;
}
var pageSize = PageSize;
PagedItemSource =
new ObservableCollection <object>(
ItemsSource.OfType <object>().Skip(Page * pageSize).Take(pageSize).ToList());
if (e.PropertyName == nameof(ItemsSource))
{
Page = 0;
}
}
public Page2ViewModel(INavigationService navigationService)
{
PrevPageCommand.Subscribe(async _ => await navigationService.GoBackAsync());
FirstPageCommand.Subscribe(async _ => await navigationService.GoBackToRootAsync());
}
