/// <inheritdoc cref="IViewHandler.PrecacheViews"/>
public IPromise PrecacheViews(UISceneGraph sceneGraph)
{
if (_precaching.Contains(sceneGraph))
{
Promise promise = new Promise();
promise.Resolve();
return(promise);
}
List <UIElement> list = new List <UIElement>();
foreach (var pair in sceneGraph.UIElements)
{
if (pair.Value.Precache && !_precachedViews.ContainsKey(pair.Value))
{
list.Add(pair.Value);
}
}
_precaching.Add(sceneGraph);
return(InstantiateViews(list, _canvasForPrecaching, (element, vieObject) =>
{
vieObject.SetActive(false);
_precachedViews.Add(element, vieObject);
}).Then(() =>
{
_precaching.Remove(sceneGraph);
}));
}
/// <inheritdoc cref="IUIController.ChangeSceneGraph"/>
public IPromise ChangeSceneGraph(string sceneName, bool precacheIfNot = true)
{
Promise promise = new Promise();
if (!_dataController.IsLoaded())
{
promise.Fail(new Exception("UISystem is not initialized"));
return(promise);
}
if (!_dataController.TryGetSceneGraph(sceneName, out UISceneGraph graph))
{
promise.Fail(new Exception($"There is no graph for {sceneName} scene."));
return(promise);
}
return(_dataController.PrecacheSceneUI(sceneName).Then(() =>
{
_screenStack.Clear();
_currentScreen = null;
_currentGraph = graph;
UIScreenNode startNode = _currentGraph.GetStartNode();
RequestScreen(startNode.Name).Then(promise.Resolve);
}));
}
/// <inheritdoc cref="IUIDataController.TryGetSceneGraph"/>
public bool TryGetSceneGraph(string sceneName, out UISceneGraph graph)
{
if (_sceneList.SceneGraphs.TryGetValue(sceneName, out graph))
{
return(true);
}
return(false);
}