/// <summary>
/// Clear all displayed options in the Menu Dialog.
/// </summary>
public virtual void Clear()
{
StopAllCoroutines();
//if something was shown notify that we are ending
if (nextOptionIndex != 0)
{
MenuSignals.DoMenuEnd(this);
}
nextOptionIndex = 0;
var optionButtons = CachedButtons;
for (int i = 0; i < optionButtons.Length; i++)
{
var button = optionButtons[i];
button.onClick.RemoveAllListeners();
}
for (int i = 0; i < optionButtons.Length; i++)
{
var button = optionButtons[i];
if (button != null)
{
button.transform.SetSiblingIndex(i);
button.gameObject.SetActive(false);
}
}
Slider timeoutSlider = CachedSlider;
if (timeoutSlider != null)
{
timeoutSlider.gameObject.SetActive(false);
}
}
/// <summary>
/// Adds the option to the list of displayed options. Calls a Block when selected.
/// Will cause the Menu dialog to become visible if it is not already visible.
/// </summary>
/// <returns><c>true</c>, if the option was added successfully.</returns>
/// <param name="text">The option text to display on the button.</param>
/// <param name="interactable">If false, the option is displayed but is not selectable.</param>
/// <param name="hideOption">If true, the option is not displayed but the menu knows that option can or did exist</param>
/// <param name="action">Action attached to the button on the menu item</param>
private bool AddOption(string text, bool interactable, bool hideOption, UnityEngine.Events.UnityAction action)
{
// 超出了
// 搜索到的按钮的个数
if (nextOptionIndex >= CachedButtons.Length)
{
return(false);
}
// 通知
// 菜单开始显示了
//if first option notify that a menu has started
if (nextOptionIndex == 0)
{
MenuSignals.DoMenuStart(this);
}
// nextOptionIndex: 下一个将要使用的Button
var button = cachedButtons[nextOptionIndex];
//move forward for next call
nextOptionIndex++;
// 此菜单，
// 是否是隐藏
//don't need to set anything on it
if (hideOption)
{
return(true);
}
// 显示菜单
button.gameObject.SetActive(true);
button.interactable = interactable;
// Q: ???
if (interactable &&
autoSelectFirstButton &&
!cachedButtons.Select(x => x.gameObject).Contains(EventSystem.current.currentSelectedGameObject))
{
EventSystem.current.SetSelectedGameObject(button.gameObject);
}
// 使用TextAdapter
// 设置按钮上的文本
TextAdapter textAdapter = new TextAdapter();
textAdapter.InitFromGameObject(button.gameObject, true);
if (textAdapter.HasTextObject())
{
// 考虑文本变化
text = TextVariationHandler.SelectVariations(text);
textAdapter.Text = text;
}
// 监听按钮点击
button.onClick.AddListener(action);
return(true);
}