public PicSelectorViewModel(Page page, PhotoSelectorOptions options)
{
this.options = options;
CancelCommand = new Command(async() =>
{
CropViewModel.PicSelectionResult.UserCancelled = true;
await Application.Current.MainPage.Navigation.PopModalAsync();
});
DoneCommand = new Command(async() =>
{
CropViewModel.PicSelectionResult.UserCancelled = false;
await Application.Current.MainPage.Navigation.PopModalAsync();
});
ChangePhotoCommand = new Command(async fake =>
{
await CrossMedia.Current.Initialize();
var canTakePhoto = CrossMedia.Current.IsTakePhotoSupported;
var canSelectPhoto = CrossMedia.Current.IsPickPhotoSupported;
string selectedOption = null;
if (canTakePhoto && canSelectPhoto)
{
var buttonText = new[] { options.TakePhotoText, options.SelectPhotoText };
selectedOption = await page.DisplayActionSheet(null, CancelText, null, buttonText);
}
else if (canTakePhoto)
{
selectedOption = options.TakePhotoText;
}
else if (canSelectPhoto)
{
selectedOption = options.SelectPhotoText;
}
else
{
//TODO: How to internationalize these strings
await page.DisplayAlert("No Photo Support", "This device does not support taking or selecting photos", "Ok");
selectedOption = null;
}
MediaFile selected = null;
if (selectedOption == options.TakePhotoText)
{
selected = await CrossMedia.Current.TakePhotoAsync(new StoreCameraMediaOptions());
}
else if (selectedOption == options.SelectPhotoText)
{
selected = await CrossMedia.Current.PickPhotoAsync();
}
if (selected != null)
{
var pic = await PicManager.LoadAsync(new Uri(selected.Path));
CropViewModel.LoadImage(pic);
BugHound.Info($"Setting selected photo to: {selected.Path}");
}
});
}
public static async Task ShowAsync(PhotoSelectorOptions options, Action <PicSelectionResult> onCompletionHandler)
{
var page = new ContentPage();
var vm = new PicSelectorViewModel(page, options);
await vm.InitializeAsync();
page.Content = new PicSelectorView(vm);
await Application.Current.MainPage.Navigation.PushModalAsync(page);
// after the page is done, go ahead and run the 'onCompleteHandler' to store the user-selected image
page.Disappearing += (sender, args) => onCompletionHandler(vm.CropViewModel.PicSelectionResult);
}
