public static void RegisterPanel(string name, UIPanelBase panel)
{
if(panel == null)
throw new System.ArgumentNullException("panel");
alivePanels.Add(name, panel);
}
public void GotoPanel(string name)
{
if(currentActiveRoutine != null)
{
Debug.Log("There is an active transition. Transition to " + "\"" + name + "\""+ " is ignored");
return;
}
UIPanelBase targetPanel;
if(!alivePanels.TryGetValue(name, out targetPanel))
throw new System.ArgumentException("Could not find the panel entity with the given name", "name");
if(targetPanel == null)
throw new System.Exception("Panel associated with the name has already disappeared. ");
UIPanelBase topPanelOnStack = panelDepthTracker.Count > 0 ? panelDepthTracker.Peek() : null;
if(topPanelOnStack == targetPanel)
{
Debug.Log("Top panel is exactly the target panel. Transition to " + "\"" + name + "\""+ " is ignored");
return;
}
currentActiveRoutine = ExchangePanelRoutine
(
topPanelOnStack,
targetPanel
);
panelDepthTracker.Push(targetPanel);
StartCoroutine(currentActiveRoutine);
}
private IEnumerator ExchangePanelRoutine(UIPanelBase toHide, UIPanelBase toShow)
{
if(toHide)
{
Coroutine toHideCoroutine = toHide.HidePanel();
yield return toHideCoroutine;
}
if(toShow)
{
Coroutine toShowCoroutine = toShow.ShowPanel();
yield return toShowCoroutine;
}
currentActiveRoutine = null;
}
public void GoBackToPreviousPanel()
{
if(currentActiveRoutine != null)
{
Debug.Log("There is an active transition. Call to go back to previous panel is ignored. ");
return;
}
if(panelDepthTracker.Count == 0)
{
Debug.Log("There is no panel in the hierachy. Call to go back to previous panel is ignored. ");
return;
}
UIPanelBase topPanel = panelDepthTracker.Pop();
UIPanelBase immediateBeneathPanel = panelDepthTracker.Count != 0 ? panelDepthTracker.Peek() : null;
currentActiveRoutine = ExchangePanelRoutine(topPanel, immediateBeneathPanel);
StartCoroutine(currentActiveRoutine);
}