public NathanPicker()
{
BindingContext = new PickerItem();
IsVisible = false;
PickerViewModel = new PickerViewModel();
_headerLayout = new HeaderLayout();
_headerLayout.TapGestureRecognizerSearchImage.Tapped += (s, e) =>
{
_myCollectionView.ScrollTo(0);
_headerLayout.TitleImage.IsVisible = false;
_headerLayout.TitleLabel.IsVisible = false;
_headerLayout.SearchImage.IsVisible = false;
_headerLayout.PickerSearchBar.IsVisible = true;
_headerLayout.BackImage.IsVisible = true;
new Animation(d => _headerLayout.PickerSearchBar.Opacity = d, 0.5, 1).Commit(_headerLayout.PickerSearchBar,
"SearchBar Animation", 60, 300,
Easing.CubicOut);
};
_headerLayout.TapGestureRecognizerBackImage.Tapped += (s, e) =>
{
_myCollectionView.ScrollTo(0);
_headerLayout.SearchImage.IsVisible = true;
_headerLayout.PickerSearchBar.Text = "";
_headerLayout.TitleImage.IsVisible = true;
_headerLayout.TitleLabel.IsVisible = true;
_headerLayout.PickerSearchBar.IsVisible = false;
_headerLayout.BackImage.IsVisible = false;
};
_headerLayout.PickerSearchBar.TextChanged += OnPickerSearchBarTextChanged;
var emptyViewLabel = new Label
{
HorizontalOptions = LayoutOptions.Fill,
HorizontalTextAlignment = TextAlignment.Center,
FontSize = DFDesignMainPage.PickerTitleFontSize.Value
};
emptyViewLabel.SetBinding(Label.TextProperty, "CurrentSearch");
_myCollectionView = new CollectionView
{
ItemsSource = PickerViewModel.PickerItems,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
SelectionMode = SelectionMode.Single,
ItemTemplate = new DataTemplate(() => new CollectionCellLayout()),
EmptyView = new StackLayout
{
VerticalOptions = LayoutOptions.CenterAndExpand,
Padding = new Thickness(DFDesignMainPage.emptyViewSidePadding.Value, 0,
DFDesignMainPage.emptyViewSidePadding.Value, 0),
Children =
{
emptyViewLabel
}
}
};
_myCollectionView.SelectionChanged += OnCollectionsViewItemSelected;
BottomPanContainer.FrameContentStackLayout.Children.Add(_headerLayout);
BottomPanContainer.FrameContentStackLayout.Children.Add(_myCollectionView);
Init();
var backgroundGesture = new TapGestureRecognizer();
backgroundGesture.Tapped += (s, e) =>
{
if (IsVisible)
{
InVisiblePicker();
}
};
}
public void AddItem(PickerItem pickerItem)
{
PickerViewModel.PickerItems.Add(pickerItem);
SetItemOptionsDefault();
}
