protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
Microsoft.Devices.CameraButtons.ShutterKeyPressed -= CameraButtons_ShutterKeyPressed;
DataContext = null;
_photoResult = null;
if (_viewModel != null)
{
_viewModel.Photos.CollectionChanged -= Photos_CollectionChanged;
_viewModel = null;
}
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
Microsoft.Devices.CameraButtons.ShutterKeyPressed -= CameraButtons_ShutterKeyPressed;
DataContext = null;
_photoResult = null;
if (_viewModel != null)
{
_viewModel.Photos.CollectionChanged -= Photos_CollectionChanged;
_viewModel = null;
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.NavigationMode == NavigationMode.New)
{
if (NavigationContext.QueryString.ContainsKey("picker"))
{
_picker = true;
GuideTextBlock.Text = AppResources.PhotosPage_PickerGuideTextBlock_Text;
}
else
{
GuideTextBlock.Text = AppResources.PhotosPage_StandaloneGuideTextBlock_Text;
// Gallery button
var galleryButton = new ApplicationBarIconButton()
{
IconUri = new Uri("/Assets/Icons/folder.png", UriKind.Relative),
Text = AppResources.ViewfinderPage_GalleryButton_Text
};
galleryButton.Click += GalleryButton_Click;
ApplicationBar.Buttons.Add(galleryButton);
// Camera button
var cameraButton = new ApplicationBarIconButton()
{
IconUri = new Uri("/Assets/Icons/camera.png", UriKind.Relative),
Text = AppResources.PhotosPage_CameraButton_Text
};
cameraButton.Click += CameraButton_Click;
ApplicationBar.Buttons.Add(cameraButton);
// About menu item
var aboutMenuItem = new ApplicationBarMenuItem()
{
Text = AppResources.PhotosPage_AboutMenuItem_Text
};
aboutMenuItem.Click += AboutMenuItem_Click;
ApplicationBar.MenuItems.Add(aboutMenuItem);
ApplicationBar.IsVisible = true;
}
}
if (_photoResult != null)
{
PhotoModel.Singleton.FromCameraRollPath(_photoResult.OriginalFileName);
if (_picker)
{
NavigationService.GoBack();
}
else
{
NavigationService.Navigate(new Uri("/Pages/MagnifierPage.xaml", UriKind.Relative));
}
}
else
{
Microsoft.Devices.CameraButtons.ShutterKeyPressed += CameraButtons_ShutterKeyPressed;
_viewModel = new PhotosPageViewModel();
_viewModel.Photos.CollectionChanged += Photos_CollectionChanged;
DataContext = _viewModel;
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.NavigationMode == NavigationMode.New)
{
if (NavigationContext.QueryString.ContainsKey("picker"))
{
_picker = true;
GuideTextBlock.Text = AppResources.PhotosPage_PickerGuideTextBlock_Text;
}
else
{
GuideTextBlock.Text = AppResources.PhotosPage_StandaloneGuideTextBlock_Text;
// Gallery button
var galleryButton = new ApplicationBarIconButton()
{
IconUri = new Uri("/Assets/Icons/folder.png", UriKind.Relative),
Text = AppResources.ViewfinderPage_GalleryButton_Text
};
galleryButton.Click += GalleryButton_Click;
ApplicationBar.Buttons.Add(galleryButton);
// Camera button
var cameraButton = new ApplicationBarIconButton()
{
IconUri = new Uri("/Assets/Icons/camera.png", UriKind.Relative),
Text = AppResources.PhotosPage_CameraButton_Text
};
cameraButton.Click += CameraButton_Click;
ApplicationBar.Buttons.Add(cameraButton);
// Delete all menu item
_deleteAllMenuItem = new ApplicationBarMenuItem()
{
Text = AppResources.PhotosPage_DeleteAllMenuItem_Text
};
_deleteAllMenuItem.Click += DeleteAllMenuItem_Click;
ApplicationBar.MenuItems.Add(_deleteAllMenuItem);
// About menu item
var aboutMenuItem = new ApplicationBarMenuItem()
{
Text = AppResources.PhotosPage_AboutMenuItem_Text
};
aboutMenuItem.Click += AboutMenuItem_Click;
ApplicationBar.MenuItems.Add(aboutMenuItem);
ApplicationBar.IsVisible = true;
}
}
if (_photoResult != null)
{
PhotoModel.Singleton.FromLibraryImage(_photoResult.OriginalFileName, _photoResult.ChosenPhoto);
if (_picker)
{
NavigationService.GoBack();
}
else
{
NavigationService.Navigate(new Uri("/Pages/MagnifierPage.xaml", UriKind.Relative));
}
}
else
{
Microsoft.Devices.CameraButtons.ShutterKeyPressed += CameraButtons_ShutterKeyPressed;
_viewModel = new PhotosPageViewModel();
_viewModel.Photos.CollectionChanged += Photos_CollectionChanged;
AdaptToPhotosCollection();
DataContext = _viewModel;
}
}
