/// <summary>
/// This method inserts an instance of "StartPageViewModel" into the
/// "startPageItemsControl", results of which displays the Start Page on
/// "DynamoView" through the list item's data template. This method also
/// ensures that there is at most one item in the "startPageItemsControl".
/// Only when this method is invoked the cost of initializing the start
/// page is incurred, when user opts to not display start page at start
/// up, then this method will not be called (therefore incurring no cost).
/// </summary>
/// <param name="isFirstRun">
/// Indicates if it is the first time new Dynamo version runs.
/// It is used to decide whether the Gallery need to be shown on the StartPage.
/// </param>
private void InitializeStartPage(bool isFirstRun)
{
if (DynamoModel.IsTestMode) // No start screen in unit testing.
return;
if (startPage == null)
{
if (startPageItemsControl.Items.Count > 0)
{
var message = "'startPageItemsControl' must be empty";
throw new InvalidOperationException(message);
}
startPage = new StartPageViewModel(dynamoViewModel, isFirstRun);
startPageItemsControl.Items.Add(startPage);
}
}
/// <summary>
/// This method inserts an instance of "StartPageViewModel" into the
/// "startPageItemsControl", results of which displays the Start Page on
/// "DynamoView" through the list item's data template. This method also
/// ensures that there is at most one item in the "startPageItemsControl".
/// Only when this method is invoked the cost of initializing the start
/// page is incurred, when user opts to not display start page at start
/// up, then this method will not be called (therefore incurring no cost).
/// </summary>
///
private void InitializeStartPage()
{
if (DynamoController.IsTestMode) // No start screen in unit testing.
return;
if (this.startPage == null)
{
if (startPageItemsControl.Items.Count > 0)
{
var message = "'startPageItemsControl' must be empty";
throw new InvalidOperationException(message);
}
this.startPage = new StartPageViewModel();
startPageItemsControl.Items.Add(this.startPage);
}
}