private void Start()
{
parentScreen = GetComponentInParent <Screen>();
Assert.IsNotNull(parentScreen);
// No assertion for button component is needed as this is already enforced through RequireComponent
buttonComponent = GetComponent <Button>();
buttonComponent.onClick.AddListener(DoClick);
}
/// <summary>
/// Transition to the provided screen.
/// </summary>
/// <param name="screen">Screen to transition to.</param>
/// <param name="saveToHistory">Indicates if this transition should be save to the screen history.</param>
public void TransitionToScreen(Screen screen, bool saveToHistory = true)
{
if (!screens.Contains(screen))
{
throw new InvalidOperationException(
$"Tried to transition to screen {screen.Name}, but this screen is not registered to this uiManager ({this})"
);
}
SetActiveScreen(screen, saveToHistory);
}
private void SetActiveScreen(Screen screen, bool saveToHistory = true)
{
if (activeScreen != null)
{
if (saveToHistory)
{
screenHistory.Push(activeScreen);
}
activeScreen.Active = false;
}
activeScreen = screen;
activeScreen.Active = true;
}
private Button CreateScreenButton(Screen screen)
{
var button = new Button {
text = screen.Name == string.Empty ? "<unnamed>" : screen.Name
};
button.clickable.clicked += () => {
// Don't use the Active property of the screen object for editing, because it's meant to be used in
// play mode. Using it outside play mode will result in NullRef errors. Set the active property of the
// gameObject directly instead.
uiManager.GetScreens().ForEach(s => s.gameObject.SetActive(false));
screen.gameObject.SetActive(true);
};
return(button);
}
