/// <summary>
/// Checks list of tabs for tab matching given content.
/// </summary>
/// <param name="menuContent"></param>
/// <returns>Returns matching tab. Returns null if no tab found.</returns>
private IMenuTab GetTabForContent(IMenuContent menuContent)
{
int index = GetIndexOfTabForContent(menuContent);
IMenuTab tab = GetTabAtIndex(index);
return(tab);
}
/// <summary>
/// Updates tab draw order and views the given menu content.
/// </summary>
/// <param name="tab"></param>
/// <param name="content"></param>
/// <param name="fadeTime"></param>
private void TabAndContentToShow(IMenuTab tab, IMenuContent content, float fadeTime)
{
if (tab == null || content == null)
{
return;
}
CanvasGroup previousCGroup = currentContent?.CGroup;
IMenuContent previousContent = currentContent;
currentContent = content;
UpdateTabDrawOrder();
if (previousCGroup != null)
{
void finishAction()
{
previousCGroup.gameObject.SetActive(false);
previousContent.OnClose();
}
StartCoroutine(TimedAction(fadeTime,
(float delta) => previousCGroup.alpha = 1f - delta,
finishAction));
}
CanvasGroup currentCGroup = currentContent.CGroup;
currentCGroup.gameObject.SetActive(true);
currentContent.OnOpen();
StartCoroutine(TimedAction(fadeTime,
(float delta) => currentCGroup.alpha = delta,
null));
}
protected virtual void Open()
{
gameObject.SetActive(true);
ClearTabsHolder();
AddPreExistingMenuContentsToList();
InstantiateTabContentPrefabs();
CreateTabs();
UpdateTabDrawOrder();
SubscribeToTabClickEvents();
KeyValuePair <int, IMenuContent> firstContent = menuContents.FirstOrDefault();
currentContent = firstContent.Value;
ContentToShow(currentContent, 0f);
}
/// <summary>
/// Add any pre-existing menu contents to menu contents list, ignoring anything with a duplicate tab name.
/// </summary>
private void AddPreExistingMenuContentsToList()
{
menuContents.Clear();
currentContent = null;
foreach (Transform child in menuContentHolder)
{
IMenuContent menuContent = child.GetComponent <IMenuContent>();
if (menuContent == null || ContainsTabWithName(menuContent.TabName))
{
Destroy(child.gameObject);
continue;
}
menuContent.CGroup.alpha = 0f;
menuContent.CGroup.gameObject.SetActive(false);
menuContents.Add(menuContent.PreferredTabIndex, menuContent);
}
}
/// <summary>
/// Checks list of tabs for index of the tab matching given content.
/// </summary>
/// <param name="menuContent"></param>
/// <returns>Returns index for tab that matches the content. Returns -1 if match not found.</returns>
private int GetIndexOfTabForContent(IMenuContent menuContent)
{
if (menuContent == null)
{
return(-1);
}
string tabName = menuContent.TabName;
for (int i = 0; i < tabs.Count; i++)
{
if (tabs[i].TabText == tabName)
{
return(i);
}
}
return(-1);
}
/// <summary>
/// Create all menu contents from prefab list, excluding anything with a duplicate tab name.
/// </summary>
private void InstantiateTabContentPrefabs()
{
for (int i = 0; i < menuContentPrefabs.Count; i++)
{
IMenuContent prefab = menuContentPrefabs[i] as IMenuContent;
if (prefab == null)
{
Debug.Log($"Menu Content prefab is not of type: {typeof(IMenuContent)}", menuContentPrefabs[i]);
continue;
}
if (ContainsTabWithName(prefab.TabName))
{
continue;
}
IMenuContent newContent = prefab.CreateCopy(menuContentHolder);
newContent.CGroup.alpha = 0f;
newContent.CGroup.gameObject.SetActive(false);
menuContents.Add(newContent.PreferredTabIndex, newContent);
}
}
/// <summary>
/// Checks list of tabs looking for a match with given content.
/// </summary>
/// <param name="menuContent"></param>
/// <returns>Returns true if matching tab is found.</returns>
private bool TabExistsForContent(IMenuContent menuContent)
{
IMenuTab tab = GetTabForContent(menuContent);
return(tab != null);
}
/// <summary>
/// Updates tab draw order and views the given menu content.
/// </summary>
/// <param name="content"></param>
/// <param name="fadeTime"></param>
private void ContentToShow(IMenuContent content, float fadeTime)
{
IMenuTab tab = GetTabForContent(content);
TabAndContentToShow(tab, content, fadeTime);
}
/// <summary>
/// Updates tab draw order and views the appropriate menu content associated with the given tab.
/// </summary>
/// <param name="tab"></param>
/// <param name="fadeTime"></param>
private void TabToShow(IMenuTab tab, float fadeTime)
{
IMenuContent content = GetContentMatchingTab(tab);
TabAndContentToShow(tab, content, fadeTime);
}