static void EnterPrefabModeFromCurrentSelection(PrefabStage.Mode preferredMode)
{
var activeGameObject = Selection.activeGameObject;
if (activeGameObject == null)
{
return;
}
if (PrefabUtility.IsPartOfAnyPrefab(activeGameObject))
{
var prefabPath = PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(activeGameObject);
if (!string.IsNullOrEmpty(prefabPath) && prefabPath.EndsWith(".prefab", StringComparison.OrdinalIgnoreCase))
{
PrefabStage.Mode prefabStageMode = preferredMode;
GameObject openedFromInstance = null;
if (preferredMode == PrefabStage.Mode.InContext)
{
openedFromInstance = !EditorUtility.IsPersistent(activeGameObject) ? activeGameObject : null;
prefabStageMode = openedFromInstance != null ? PrefabStage.Mode.InContext : PrefabStage.Mode.InIsolation;
}
OpenPrefab(prefabPath, openedFromInstance, prefabStageMode);
}
}
}
internal static PrefabStage OpenPrefab(string prefabAssetPath, GameObject openedFromInstance, PrefabStage.Mode prefabStageMode, StageNavigationManager.Analytics.ChangeType changeTypeAnalytics)
{
if (string.IsNullOrEmpty(prefabAssetPath))
{
throw new ArgumentNullException(nameof(prefabAssetPath));
}
if (openedFromInstance != null && !PrefabUtility.IsPartOfPrefabInstance(openedFromInstance))
{
throw new ArgumentException("GameObject must be part of a Prefab instance, or null.", nameof(openedFromInstance));
}
if (!prefabAssetPath.EndsWith(".prefab", StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("Incorrect file extension: " + prefabAssetPath + ". Must be '.prefab'", nameof(prefabAssetPath));
}
if (AssetDatabase.LoadMainAssetAtPath(prefabAssetPath) == null)
{
throw new ArgumentException("Prefab not found at path " + prefabAssetPath, nameof(prefabAssetPath));
}
return(OpenPrefabMode(prefabAssetPath, openedFromInstance, prefabStageMode, changeTypeAnalytics));
}
public static PrefabStage OpenPrefab(string prefabAssetPath, GameObject openedFromInstance, PrefabStage.Mode prefabStageMode)
{
return(OpenPrefab(prefabAssetPath, openedFromInstance, prefabStageMode, StageNavigationManager.Analytics.ChangeType.EnterViaUnknown));
}
internal static PrefabStage OpenPrefabMode(string prefabAssetPath, GameObject openedFromInstance, PrefabStage.Mode prefabStageMode, StageNavigationManager.Analytics.ChangeType changeTypeAnalytics)
{
if (EditorApplication.isPlaying)
{
bool blockPrefabModeInPlaymode = CheckIfAnyComponentShouldBlockPrefabModeInPlayMode(prefabAssetPath);
if (blockPrefabModeInPlaymode)
{
return(null);
}
}
PrefabStage prevPrefabStage = GetCurrentPrefabStage();
bool setAsFirstItemAfterMainStage = prevPrefabStage == null || !IsPartOfPrefabStage(openedFromInstance, prevPrefabStage);
var previousSelection = Selection.activeGameObject;
UInt64 previousFileID = (openedFromInstance != null) ? GetFileIDForCorrespondingObjectFromSourceAtPath(previousSelection, prefabAssetPath) : 0;
// Ensure valid prefabStageMode (if no context then do not allow Prefab Mode in Context)
if (openedFromInstance == null && prefabStageMode != PrefabStage.Mode.InIsolation)
{
prefabStageMode = PrefabStage.Mode.InIsolation;
}
Stage contextStage = null;
if (prefabStageMode == PrefabStage.Mode.InContext)
{
var stageHistory = StageNavigationManager.instance.stageHistory;
contextStage = stageHistory[stageHistory.Count - 1].GetContextStage();
}
var prefabStage = GetExistingPrefabStage(prefabAssetPath, openedFromInstance, prefabStageMode);
if (prefabStage == null)
{
prefabStage = PrefabStage.CreatePrefabStage(prefabAssetPath, openedFromInstance, prefabStageMode, contextStage);
}
if (StageNavigationManager.instance.SwitchToStage(prefabStage, setAsFirstItemAfterMainStage, changeTypeAnalytics))
{
// If selection did not change by switching stage by us or user (or if current selection is not part of
// the opened prefab stage) then handle automatic selection in new prefab mode.
if (Selection.activeGameObject == previousSelection || !prefabStage.IsPartOfPrefabContents(Selection.activeGameObject))
{
HandleSelectionWhenSwithingToNewPrefabMode(GetCurrentPrefabStage().prefabContentsRoot, previousFileID);
}
SceneView.RepaintAll();
return(prefabStage);
}
else
{
// Failed to switch to new stage
return(null);
}
}
static PrefabStage GetExistingPrefabStage(string prefabAssetPath, GameObject openedFromInstance, PrefabStage.Mode prefabStageMode)
{
var stageHistory = StageNavigationManager.instance.stageHistory;
for (int i = 1; i < stageHistory.Count; i++)
{
var prefabStage = stageHistory[i] as PrefabStage;
if (prefabStage != null && prefabStage.assetPath == prefabAssetPath)
{
// If PrefabStage.Mode did not match on existing PrefabStage we do not reuse the stage
// so we create a new PrefabStage with the correct mode
if (prefabStage.mode == prefabStageMode)
{
return(prefabStage);
}
}
}
return(null);
}