// Manages running active coroutines!
private static void Runner()
{
// Tick all the coroutines we have stored
for (int i = 0; i < coroutineStates.Count; i++)
{
TickState(coroutineStates[i]);
}
// if a coroutine was finished whilst we were ticking, clear it out now
for (int i = 0; i < finishedThisUpdate.Count; i++)
{
coroutineStates.Remove(finishedThisUpdate[i]);
if (uiCoroutineState == finishedThisUpdate[i])
{
uiCoroutineState = null;
EditorUtility.ClearProgressBar();
}
}
finishedThisUpdate.Clear();
// stop the runner if were done.
if (coroutineStates.Count == 0)
{
EditorApplication.update -= Runner;
}
}
/// <summary>
/// Start a coroutine and display a progress UI. only one EditorCoroutine can display a UI at once. equivilent of calling StartCoroutine on a mono behaviour
/// </summary>
/// <param name="coroutine">coroutine to run</param>
/// <param name="title">Text to show in the UIs title bar</param>
/// <param name="isCancelable">Displays a cancel button if true</param>
public static EditorCoroutine StartCoroutineWithUI(IEnumerator coroutine, string title, bool isCancelable = false)
{
if (uiCoroutineState != null)
{
Debug.LogError("EditorCoroutineRunner only supports running one coroutine that draws a GUI! [" + title + "]");
return(null);
}
EditorCoroutineRunner.uiCoroutineState = new EditorCoroutineState(coroutine, title, isCancelable);
return(StoreCoroutine(uiCoroutineState));
}
// Creates objects to manage the coroutines lifecycle and stores them away to be processed
private static EditorCoroutine StoreCoroutine(EditorCoroutineState state)
{
if (coroutineStates == null)
{
coroutineStates = new List <EditorCoroutineState>();
finishedThisUpdate = new List <EditorCoroutineState>();
}
if (coroutineStates.Count == 0)
{
EditorApplication.update += Runner;
}
coroutineStates.Add(state);
return(state.editorCoroutineYieldInstruction);
}
public static void KillCoroutine(ref EditorCoroutine coroutine)
{
if (uiCoroutineState.editorCoroutineYieldInstruction == coroutine)
{
uiCoroutineState = null;
coroutine = null;
EditorUtility.ClearProgressBar();
return;
}
if (KillCoroutine(ref coroutine, ref coroutineStates))
{
return;
}
if (KillCoroutine(ref coroutine, ref finishedThisUpdate))
{
return;
}
}
private static void TickState(EditorCoroutineState state)
{
if (state.IsValid)
{
// This coroutine is still valid, give it a chance to tick!
state.Tick();
// if this coroutine is the active UI coroutine, give it a chance to update the UI
if (state.showUI && uiCoroutineState == state)
{
uiCoroutineState.UpdateUI();
}
}
else
{
// We have finished running the coroutine, lets scrap it
finishedThisUpdate.Add(state);
}
}