private void LoadImageFiles(string directoryPath, string selectedImage)
{
var imageFiles = recognisedImageExtensions.SelectMany(pattern => new DirectoryInfo(directoryPath).GetFiles(pattern, SearchOption.TopDirectoryOnly).Where(it => (it.Attributes & FileAttributes.Hidden) == 0)).Distinct().ToArray();
var images = new List <IImagePreviewItemViewModel>();
foreach (var file in FileExplorerSortingProvider.Sort(imageFiles, directoryPath))
{
images.Add(_imagePreviewItemViewModelFactory.CreateImagePreviewItemViewModel(file.FullName, (SelectedImage) =>
{
SelectedImageInList = SelectedImage;
}));
}
Images = new ObservableCollection <IImagePreviewItemViewModel>(images);
OnPropertyChanged(nameof(Images));
if (Images.Count > 0)
{
if (string.IsNullOrEmpty(selectedImage))
{
SelectedImage = Images.First();
}
else
{
SelectedImage = Images.FirstOrDefault(it => Path.Equals(it.Path, selectedImage));
// something else then image was selected
if (SelectedImage == null)
{
SelectedImage = Images.First();
}
}
SetNavigationButtonsVisibility();
_selectedImageInList = SelectedImage;
OnPropertyChanged(nameof(SelectedImageInList));
}
else
{
SelectedImage = null;
}
}
public ImagePreviewViewModel(IThrottledActionInvokerFactory throttledActionInvokerFactory,
IImagePreviewItemViewModelFactory imagePreviewItemViewModelFactory,
IUserSettings userSettings)
{
_throttledActionInvokerFactory = throttledActionInvokerFactory;
_imagePreviewItemViewModelFactory = imagePreviewItemViewModelFactory;
_userSettings = userSettings;
CloseCommand = new RelayCommand(() =>
{
Application.Current.MainWindow.Close();
});
SlideshowCommand = new RelayCommand(() =>
{
_inSlideshowMode = true;
SetSelectedImage(SelectedImageInList);
});
NextImageCommand = new RelayCommand(() =>
{
SelectedImage = Images.SkipWhile(it => it != SelectedImage).Skip(1).First();
_selectedImageInList = SelectedImage;
OnPropertyChanged(nameof(SelectedImageInList));
NextImageButtonVisible = SelectedImage != Images.Last();
PreviousImageButtonVisible = SelectedImage != Images.First();
});
PreviousImageCommand = new RelayCommand(() =>
{
SelectedImage = Images.TakeWhile(it => it != SelectedImage).Last();
_selectedImageInList = SelectedImage;
OnPropertyChanged(nameof(SelectedImageInList));
PreviousImageButtonVisible = SelectedImage != Images.First();
NextImageButtonVisible = SelectedImage != Images.Last();
});
}
private void SetSelectedImage(IImagePreviewItemViewModel image)
{
if (_inSlideshowMode)
{
NextImageButtonVisible = false;
PreviousImageButtonVisible = false;
SelectedImage = image;
_selectedImageInList = image;
OnPropertyChanged(nameof(SelectedImageInList));
if (Images.IndexOf(image) < Images.Count - 1)
{
_slideshowScheduledActionInvoker.ScheduleAction(() =>
{
var currentIndex = Images.IndexOf(SelectedImage);
if (Images.Count > currentIndex + 1)
{
SetSelectedImage(Images[currentIndex + 1]);
}
}, _slideshowDelayInSeconds * MsPerSecond);
}
}
}
