Deletes code related to deprecated layout inspector timeline feature

Summary: Deletes code related to deprecated layout inspector timeline feature

Differential Revision: D55418203

fbshipit-source-id: e3447732c6e73a960f3052a0bda9017cda789dc8

litho-core/src/main/java/com/facebook/litho/ComponentTree.java

@@ -151,7 +151,6 @@ public class ComponentTree
 
   private boolean mInAttach = false;
 
-  @Nullable private final ComponentTreeTimeMachine mTimeMachine;
   @Nullable private final ComponentTreeDebugEventsSubscriber mDebugEventsSubscriber;
 
   @GuardedBy("this")
@@ -414,11 +413,6 @@ protected ComponentTree(Builder builder) {
       }
     }
 
-    if (LithoDebugConfigurations.isTimelineEnabled) {
-      mTimeMachine = new DebugComponentTreeTimeMachine(this);
-    } else {
-      mTimeMachine = null;
-    }
     if (ComponentsConfiguration.enableRefactorLithoLifecycleProvider) {
       mLifecycleProvider = builder.mLifecycleProvider;
     } else {
@@ -2382,7 +2376,6 @@ && isCompatibleSpec(layoutState, mWidthSpec, mHeightSpec)) {
         if (localTreeState != null) {
           final TreeState treeState = mTreeState;
           if (treeState != null) { // we could have been released
-            saveRevision(rootComponent, treeState, treePropContainer, source, extraAttribution);
             treeState.commitLayoutState(localTreeState);
             treeState.bindEventAndTriggerHandlers(createdEventHandlers, scopedSpecComponentInfos);
           }
@@ -2846,51 +2839,6 @@ private void onMoveToStateDestroy() {
     }
   }
 
-  /** This should only be used by Flipper. */
-  @Nullable
-  ComponentTreeTimeMachine getTimeMachine() {
-    return mTimeMachine;
-  }
-
-  private void saveRevision(
-      Component root,
-      TreeState treeState,
-      @Nullable TreePropContainer treePropContainer,
-      @RenderSource int source,
-      @Nullable String attribution) {
-    if (mTimeMachine != null) {
-      final TreeState frozenTreeState = new TreeState(treeState);
-      mTimeMachine.storeRevision(root, frozenTreeState, treePropContainer, source, attribution);
-    }
-  }
-
-  /**
-   * Similar to {@link ComponentTree#setRoot(Component)}. This method allows setting a new root with
-   * cached {@link TreePropContainer} and {@link StateHandler}.
-   *
-   * <p>It is used to enable time-travelling through external editors such as Flipper.
-   */
-  @UiThread
-  protected synchronized void applyRevision(ComponentTreeTimeMachine.Revision revision) {
-    ThreadUtils.assertMainThread();
-
-    mTreeState = revision.getTreeState();
-    mRootTreePropContainer = revision.getTreePropContainer();
-
-    setRootAndSizeSpecInternal(
-        revision.getRoot(),
-        SIZE_UNINITIALIZED,
-        SIZE_UNINITIALIZED,
-        false /* isAsync */,
-        null /* output */,
-        RenderSource.RELOAD_PREVIOUS_STATE,
-        INVALID_LAYOUT_VERSION,
-        null,
-        null,
-        false,
-        true);
-  }
-
   /**
    * In this approach we are attempting to start the layout calculation using the Choreographer
    * frame callbacks system.

litho-core/src/main/java/com/facebook/litho/DebugComponent.kt

@@ -43,7 +43,6 @@ private constructor(
     private val y: Int,
     private val xOffset: Int,
     private val yOffset: Int,
-    val componentTreeTimeMachine: ComponentTreeTimeMachine?,
 ) {
 
   interface Overrider {
@@ -160,7 +159,7 @@ private constructor(
                     result.getYForChildAtIndex(0),
                     xFromRoot,
                     yFromRoot,
-                    null)
+                )
             listOfNotNull(component)
           }
           else -> getChildren(result, xFromRoot, yFromRoot)
@@ -173,7 +172,7 @@ private constructor(
     if (index < 0) {
       return emptyList()
     }
-    val component = getInstance(result, index, x, y, xOffset, yOffset, null)
+    val component = getInstance(result, index, x, y, xOffset, yOffset)
     return listOfNotNull(component)
   }
 
@@ -346,7 +345,6 @@ private constructor(
         y: Int,
         xOffset: Int,
         yOffset: Int,
-        timeMachine: ComponentTreeTimeMachine?,
     ): DebugComponent? {
       val node = result.node
       val context = result.context
@@ -355,7 +353,6 @@ private constructor(
       }
       val componentKey = node.getGlobalKeyAt(componentIndex)
       return DebugComponent(
-              componentTreeTimeMachine = timeMachine,
               globalKey = generateGlobalKey(context, componentKey),
               result = result,
               node = result.node,
@@ -370,18 +367,14 @@ private constructor(
 
     @JvmStatic
     fun getRootInstance(view: BaseMountingView): DebugComponent? =
-        getRootInstance(
-            view.currentLayoutState,
-            if (view is LithoView) view.componentTree?.timeMachine else null)
+        getRootInstance(view.currentLayoutState)
 
     fun getRootInstance(componentTree: ComponentTree?): DebugComponent? =
-        if (componentTree == null) null
-        else getRootInstance(componentTree.mainThreadLayoutState, componentTree.timeMachine)
+        if (componentTree == null) null else getRootInstance(componentTree.mainThreadLayoutState)
 
     @JvmStatic
     fun getRootInstance(
         layoutState: LayoutState?,
-        timeMachine: ComponentTreeTimeMachine?
     ): DebugComponent? {
       val root = layoutState?.rootLayoutResult
       if (root == null || root is NullLithoLayoutResult) {
@@ -390,16 +383,14 @@ private constructor(
       check(root is LithoLayoutResult) { "Expected root to be a LithoLayoutResult" }
       val node = root.node
       val outerWrapperComponentIndex = (node.componentCount - 1).coerceAtLeast(0)
-      return getInstance(root, outerWrapperComponentIndex, 0, 0, 0, 0, timeMachine)?.apply {
-        isRoot = true
-      }
+      return getInstance(root, outerWrapperComponentIndex, 0, 0, 0, 0)?.apply { isRoot = true }
     }
 
     @JvmStatic
     fun getInstance(result: LithoLayoutResult, x: Int, y: Int): DebugComponent? {
       val rootNode = result.node
       val outerWrapperComponentIndex = (rootNode.componentCount - 1).coerceAtLeast(0)
-      return getInstance(result, outerWrapperComponentIndex, x, y, 0, 0, null)
+      return getInstance(result, outerWrapperComponentIndex, x, y, 0, 0)
     }
 
     /**
@@ -503,7 +494,7 @@ private constructor(
                 result.getYForChildAtIndex(i),
                 xOffset,
                 yOffset,
-                null)
+            )
             ?.let { add(it) }
       }
     }

litho-core/src/main/java/com/facebook/litho/LayoutState.java

@@ -80,7 +80,6 @@ public static boolean isFromSyncLayout(@RenderSource int source) {
       case RenderSource.SET_ROOT_SYNC:
       case RenderSource.UPDATE_STATE_SYNC:
       case RenderSource.SET_SIZE_SPEC_SYNC:
-      case RenderSource.RELOAD_PREVIOUS_STATE:
         return true;
       default:
         return false;
@@ -298,8 +297,6 @@ static String layoutSourceToString(@RenderSource int source) {
         return "measure_setSizeSpecAsync";
       case RenderSource.TEST:
         return "test";
-      case RenderSource.RELOAD_PREVIOUS_STATE:
-        return "reloadState";
       case RenderSource.NONE:
         return "none";
       default:

litho-core/src/main/java/com/facebook/litho/RenderSource.kt

@@ -28,8 +28,7 @@ import androidx.annotation.IntDef
     RenderSource.UPDATE_STATE_SYNC,
     RenderSource.UPDATE_STATE_ASYNC,
     RenderSource.MEASURE_SET_SIZE_SPEC,
-    RenderSource.MEASURE_SET_SIZE_SPEC_ASYNC,
-    RenderSource.RELOAD_PREVIOUS_STATE)
+    RenderSource.MEASURE_SET_SIZE_SPEC_ASYNC)
 annotation class RenderSource {
   companion object {
     const val TEST = -2
@@ -42,7 +41,6 @@ annotation class RenderSource {
     const val UPDATE_STATE_ASYNC = 5
     const val MEASURE_SET_SIZE_SPEC = 6
     const val MEASURE_SET_SIZE_SPEC_ASYNC = 7
-    const val RELOAD_PREVIOUS_STATE = 8
   }
 }