private static void OnIsExpandedChanged(object sender, DependencyPropertyChangedEventArgs e)
{
LoopingSelector picker = (LoopingSelector)sender;
picker.UpdateItemState();
if (!picker.IsExpanded)
{
picker.SelectAndSnapToClosest();
}
if (picker._state == State.Normal || picker._state == State.Expanded)
{
picker._state = picker.IsExpanded ? State.Expanded : State.Normal;
}
var listeners = picker.IsExpandedChanged;
if (listeners != null)
{
listeners(picker, e);
}
}
private static void OnDataModelChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
LoopingSelector picker = (LoopingSelector)obj;
picker.UpdateData();
}
/// <summary>
/// Initializes the ValuePickerPageBase class; must be called from the subclass's constructor.
/// </summary>
/// <param name="primarySelector">Primary selector.</param>
/// <param name="secondarySelector">Secondary selector.</param>
/// <param name="tertiarySelector">Tertiary selector.</param>
protected void InitializeValuePickerPage(LoopingSelector primarySelector, LoopingSelector secondarySelector, LoopingSelector tertiarySelector)
{
if (null == primarySelector)
{
throw new ArgumentNullException("primarySelector");
}
if (null == secondarySelector)
{
throw new ArgumentNullException("secondarySelector");
}
if (null == tertiarySelector)
{
throw new ArgumentNullException("tertiarySelector");
}
_primarySelectorPart = primarySelector;
_secondarySelectorPart = secondarySelector;
_tertiarySelectorPart = tertiarySelector;
// Hook up to interesting events
_primarySelectorPart.DataSource.SelectionChanged += OnDataSourceSelectionChanged;
_secondarySelectorPart.DataSource.SelectionChanged += OnDataSourceSelectionChanged;
_tertiarySelectorPart.DataSource.SelectionChanged += OnDataSourceSelectionChanged;
_primarySelectorPart.IsExpandedChanged += OnSelectorIsExpandedChanged;
_secondarySelectorPart.IsExpandedChanged += OnSelectorIsExpandedChanged;
_tertiarySelectorPart.IsExpandedChanged += OnSelectorIsExpandedChanged;
// Hide all selectors
_primarySelectorPart.Visibility = Visibility.Collapsed;
_secondarySelectorPart.Visibility = Visibility.Collapsed;
_tertiarySelectorPart.Visibility = Visibility.Collapsed;
// Position and reveal the culture-relevant selectors
int column = 0;
foreach (LoopingSelector selector in GetSelectorsOrderedByCulturePattern())
{
Grid.SetColumn(selector, column);
selector.Visibility = Visibility.Visible;
column++;
}
// Hook up to storyboard(s)
var templateRoot = VisualTreeHelper.GetChild(this, 0) as FrameworkElement;
if (null != templateRoot)
{
foreach (VisualStateGroup group in VisualStateManager.GetVisualStateGroups(templateRoot))
{
if (VisibilityGroupName == group.Name)
{
foreach (VisualState state in group.States)
{
if ((ClosedVisibilityStateName == state.Name) && (null != state.Storyboard))
{
_closedStoryboard = state.Storyboard;
_closedStoryboard.Completed += OnClosedStoryboardCompleted;
}
}
}
}
}
// Customize the ApplicationBar Buttons by providing the right text
if (null != ApplicationBar)
{
foreach (var obj in ApplicationBar.Buttons)
{
var button = obj as IApplicationBarIconButton;
if (null != button)
{
switch (button.Text)
{
case "DONE":
button.Text = Properties.Resources.DoneText;
button.Click += OnDoneButtonClick;
break;
case "CANCEL":
button.Text = Properties.Resources.CancelText;
button.Click += OnCancelButtonClick;
break;
}
}
}
}
// Play the Open state
VisualStateManager.GoToState(this, OpenVisibilityStateName, true);
}
