/// <summary>
/// Creates a new instance of the <see cref="UIView"/> class.
/// </summary>
/// <param name="uiPanel">The <see cref="UIPanel"/> which is creating the view.</param>
/// <param name="uiPanelDefinition">The <see cref="UIPanelDefinition"/> that defines the view's containing panel.</param>
/// <param name="vmfactory">A view model factory which is used to create the view's initial view model, or <see langword="null"/> to skip view model creation.</param>
/// <returns>The instance of <see cref="UIView"/> that was created.</returns>
public static UIView Create(UIPanel uiPanel, UIPanelDefinition uiPanelDefinition, UIViewModelFactory vmfactory)
{
Contract.Require(uiPanel, nameof(uiPanel));
Contract.Require(uiPanelDefinition, nameof(uiPanelDefinition));
var uv = UltravioletContext.DemandCurrent();
var factory = uv.TryGetFactoryMethod <UIViewFactory>();
if (factory != null)
{
return(factory(uv, uiPanel, uiPanelDefinition, vmfactory));
}
return(null);
}
/// <summary>
/// Validates panel definitions that are being reloaded.
/// </summary>
private bool OnValidatingUIPanelDefinition(String path, UIPanelDefinition asset)
{
try
{
pendingView = CreateViewFromFromUIPanelDefinition(asset);
return(true);
}
catch (Exception e)
{
pendingView = null;
Debug.WriteLine(UltravioletStrings.ExceptionDuringViewReloading);
Debug.WriteLine(e);
return(false);
}
}
/// <summary>
/// Reloads panel definitions.
/// </summary>
private void OnReloadingUIPanelDefinition(String path, UIPanelDefinition asset, Boolean validated)
{
if (validated)
{
if (State == UIPanelState.Open)
{
var currentViewModel = View?.ViewModel;
var currentView = View;
if (currentView != null)
{
currentView.OnClosing();
currentView.OnClosed();
UnloadView();
}
DefaultOpenTransitionDuration = asset.DefaultOpenTransitionDuration;
DefaultCloseTransitionDuration = asset.DefaultCloseTransitionDuration;
FinishLoadingView(pendingView);
pendingView = null;
var updatedView = View;
if (updatedView != null)
{
if (currentViewModel != null)
{
updatedView.SetViewModel(currentViewModel);
}
updatedView.OnOpening();
updatedView.OnOpened();
}
}
}
else
{
pendingView?.Dispose();
pendingView = null;
}
}
