/// <summary>
/// Copies each text and shows each root.
/// Hides any options beyond number of option texts.
///
/// Assigns option index and button subscribes to selected event.
/// </summary>
private void PopulateOptions(
List <string> optionTexts,
OptionView[] optionViews)
{
int numOptionTexts = optionTexts == null ? 0 : optionTexts.Count;
int numOptions = optionViews.Length;
Debug.Assert(numOptions >= numOptionTexts,
"Expected at least " + numOptions + " option views " +
"equal or greater than " + numOptionTexts + " optionTexts."
);
if (numOptions < numOptionTexts)
{
numOptionTexts = numOptions;
}
for (int optionIndex = 0; optionIndex < numOptionTexts; ++optionIndex)
{
OptionView optionView = optionViews[optionIndex];
string optionText = optionTexts[optionIndex];
AddListener(optionView, optionText);
optionView.optionRoot.SetActive(true);
}
for (int optionIndex = numOptionTexts; optionIndex < numOptions; ++optionIndex)
{
OptionView optionView = optionViews[optionIndex];
optionView.optionRoot.SetActive(false);
optionView.optionText.text = "";
RemoveListener(optionView);
}
}
private static void RemoveListener(OptionView optionView)
{
if (optionView.onThisSelected == null)
{
return;
}
if (optionView.optionButton == null)
{
return;
}
optionView.optionButton.onClick.RemoveAllListeners();
}
private void AddListener(OptionView optionView, string optionText)
{
if (optionView.onThisSelected == null ||
optionView.optionText.text != optionText)
{
optionView.optionText.text = optionText;
optionView.onThisSelected = () => SelectOptionText(optionText);
}
if (optionView.optionButton == null)
{
Debug.Assert(optionView.optionButton != null,
"Expected option button. optionText=" + optionText,
context: optionView.optionRoot
);
return;
}
optionView.optionButton.onClick.RemoveAllListeners();
optionView.optionButton.onClick.AddListener(optionView.onThisSelected);
}
