Extract shadow hierarchy logic from UIManagerModule into UIImplementation

Summary: public This diff extracts all shadow hierarchy-specific logic from UIManagerModule into a UIImplementation class. This will later allow using in alternative UIImplementations in future.

Reviewed By: astreet

Differential Revision: D2457849

fb-gh-sync-id: 532128ce1d67b525cdf03794a5a29d7e9ed0ab90
This commit is contained in:
Denis Koroskin 2015-11-25 21:17:26 -08:00 committed by facebook-github-bot-5
parent aeda31428d
commit 76e033ead9
2 changed files with 697 additions and 441 deletions

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@ -0,0 +1,644 @@
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.react.uimanager;
import javax.annotation.Nullable;
import java.util.Arrays;
import com.facebook.csslayout.CSSLayoutContext;
import com.facebook.infer.annotation.Assertions;
import com.facebook.react.animation.Animation;
import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.Callback;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.bridge.ReadableMap;
import com.facebook.react.bridge.WritableArray;
import com.facebook.react.uimanager.debug.NotThreadSafeViewHierarchyUpdateDebugListener;
import com.facebook.react.uimanager.events.EventDispatcher;
import com.facebook.systrace.Systrace;
import com.facebook.systrace.SystraceMessage;
/**
* An class that is used to receive React commands from JS and translate them into a
* shadow node hierarchy that is then mapped to a native view hierarchy.
*/
public class UIImplementation {
private final ShadowNodeRegistry mShadowNodeRegistry = new ShadowNodeRegistry();
private final ViewManagerRegistry mViewManagers;
private final CSSLayoutContext mLayoutContext = new CSSLayoutContext();
private final UIViewOperationQueue mOperationsQueue;
private final NativeViewHierarchyOptimizer mNativeViewHierarchyOptimizer;
private final int[] mMeasureBuffer = new int[4];
public UIImplementation(ReactApplicationContext reactContext, ViewManagerRegistry viewManagers) {
mOperationsQueue = new UIViewOperationQueue(
reactContext,
new NativeViewHierarchyManager(viewManagers));
mViewManagers = viewManagers;
mNativeViewHierarchyOptimizer = new NativeViewHierarchyOptimizer(
mOperationsQueue,
mShadowNodeRegistry);
}
/**
* Registers a root node with a given tag, size and ThemedReactContext
* and adds it to a node registry.
*/
public void registerRootView(
SizeMonitoringFrameLayout rootView,
int tag,
int width,
int height,
ThemedReactContext context) {
final ReactShadowNode rootCSSNode = new ReactShadowNode();
rootCSSNode.setReactTag(tag);
rootCSSNode.setThemedContext(context);
rootCSSNode.setStyleWidth(width);
rootCSSNode.setStyleHeight(height);
rootCSSNode.setViewClassName("Root");
mShadowNodeRegistry.addRootNode(rootCSSNode);
// register it within NativeViewHierarchyManager
mOperationsQueue.addRootView(tag, rootView, context);
}
/**
* Unregisters a root node with a given tag.
*/
public void removeRootView(int rootViewTag) {
mShadowNodeRegistry.removeRootNode(rootViewTag);
mOperationsQueue.enqueueRemoveRootView(rootViewTag);
}
/**
* Invoked when native view that corresponds to a root node has its size changed.
*/
public void updateRootNodeSize(
int rootViewTag,
int newWidth,
int newHeight,
EventDispatcher eventDispatcher) {
ReactShadowNode rootCSSNode = mShadowNodeRegistry.getNode(rootViewTag);
rootCSSNode.setStyleWidth(newWidth);
rootCSSNode.setStyleHeight(newHeight);
// If we're in the middle of a batch, the change will automatically be dispatched at the end of
// the batch. As all batches are executed as a single runnable on the event queue this should
// always be empty, but that calling architecture is an implementation detail.
if (mOperationsQueue.isEmpty()) {
dispatchViewUpdates(eventDispatcher, -1); // -1 = no associated batch id
}
}
/**
* Invoked by React to create a new node with a given tag, class name and properties.
*/
public void createView(int tag, String className, int rootViewTag, ReadableMap props) {
ViewManager viewManager = mViewManagers.get(className);
ReactShadowNode cssNode = viewManager.createShadowNodeInstance();
ReactShadowNode rootNode = mShadowNodeRegistry.getNode(rootViewTag);
cssNode.setReactTag(tag);
cssNode.setViewClassName(className);
cssNode.setRootNode(rootNode);
cssNode.setThemedContext(rootNode.getThemedContext());
mShadowNodeRegistry.addNode(cssNode);
CatalystStylesDiffMap styles = null;
if (props != null) {
styles = new CatalystStylesDiffMap(props);
cssNode.updateProperties(styles);
}
if (!cssNode.isVirtual()) {
mNativeViewHierarchyOptimizer.handleCreateView(cssNode, rootViewTag, styles);
}
}
public void dropViews(ReadableArray viewTags) {
int size = viewTags.size(), realViewsCount = 0;
int realViewTags[] = new int[size];
for (int i = 0; i < size; i++) {
int tag = viewTags.getInt(i);
ReactShadowNode cssNode = mShadowNodeRegistry.getNode(tag);
if (!cssNode.isVirtual()) {
realViewTags[realViewsCount++] = tag;
}
mShadowNodeRegistry.removeNode(tag);
}
if (realViewsCount > 0) {
mNativeViewHierarchyOptimizer.handleDropViews(realViewTags, realViewsCount);
}
}
/**
* Invoked by React to create a new node with a given tag has its properties changed.
*/
public void updateView(int tag, String className, ReadableMap props) {
ViewManager viewManager = mViewManagers.get(className);
if (viewManager == null) {
throw new IllegalViewOperationException("Got unknown view type: " + className);
}
ReactShadowNode cssNode = mShadowNodeRegistry.getNode(tag);
if (cssNode == null) {
throw new IllegalViewOperationException("Trying to update non-existent view with tag " + tag);
}
if (props != null) {
CatalystStylesDiffMap styles = new CatalystStylesDiffMap(props);
cssNode.updateProperties(styles);
if (!cssNode.isVirtual()) {
mNativeViewHierarchyOptimizer.handleUpdateView(cssNode, className, styles);
}
}
}
/**
* Invoked when there is a mutation in a node tree.
*
* @param tag react tag of the node we want to manage
* @param indicesToRemove ordered (asc) list of indicies at which view should be removed
* @param viewsToAdd ordered (asc based on mIndex property) list of tag-index pairs that represent
* a view which should be added at the specified index
* @param tagsToDelete list of tags corresponding to views that should be removed
*/
public void manageChildren(
int viewTag,
@Nullable ReadableArray moveFrom,
@Nullable ReadableArray moveTo,
@Nullable ReadableArray addChildTags,
@Nullable ReadableArray addAtIndices,
@Nullable ReadableArray removeFrom) {
ReactShadowNode cssNodeToManage = mShadowNodeRegistry.getNode(viewTag);
int numToMove = moveFrom == null ? 0 : moveFrom.size();
int numToAdd = addChildTags == null ? 0 : addChildTags.size();
int numToRemove = removeFrom == null ? 0 : removeFrom.size();
if (numToMove != 0 && (moveTo == null || numToMove != moveTo.size())) {
throw new IllegalViewOperationException("Size of moveFrom != size of moveTo!");
}
if (numToAdd != 0 && (addAtIndices == null || numToAdd != addAtIndices.size())) {
throw new IllegalViewOperationException("Size of addChildTags != size of addAtIndices!");
}
// We treat moves as an add and a delete
ViewAtIndex[] viewsToAdd = new ViewAtIndex[numToMove + numToAdd];
int[] indicesToRemove = new int[numToMove + numToRemove];
int[] tagsToRemove = new int[indicesToRemove.length];
int[] tagsToDelete = new int[numToRemove];
if (numToMove > 0) {
Assertions.assertNotNull(moveFrom);
Assertions.assertNotNull(moveTo);
for (int i = 0; i < numToMove; i++) {
int moveFromIndex = moveFrom.getInt(i);
int tagToMove = cssNodeToManage.getChildAt(moveFromIndex).getReactTag();
viewsToAdd[i] = new ViewAtIndex(
tagToMove,
moveTo.getInt(i));
indicesToRemove[i] = moveFromIndex;
tagsToRemove[i] = tagToMove;
}
}
if (numToAdd > 0) {
Assertions.assertNotNull(addChildTags);
Assertions.assertNotNull(addAtIndices);
for (int i = 0; i < numToAdd; i++) {
int viewTagToAdd = addChildTags.getInt(i);
int indexToAddAt = addAtIndices.getInt(i);
viewsToAdd[numToMove + i] = new ViewAtIndex(viewTagToAdd, indexToAddAt);
}
}
if (numToRemove > 0) {
Assertions.assertNotNull(removeFrom);
for (int i = 0; i < numToRemove; i++) {
int indexToRemove = removeFrom.getInt(i);
int tagToRemove = cssNodeToManage.getChildAt(indexToRemove).getReactTag();
indicesToRemove[numToMove + i] = indexToRemove;
tagsToRemove[numToMove + i] = tagToRemove;
tagsToDelete[i] = tagToRemove;
}
}
// NB: moveFrom and removeFrom are both relative to the starting state of the View's children.
// moveTo and addAt are both relative to the final state of the View's children.
//
// 1) Sort the views to add and indices to remove by index
// 2) Iterate the indices being removed from high to low and remove them. Going high to low
// makes sure we remove the correct index when there are multiple to remove.
// 3) Iterate the views being added by index low to high and add them. Like the view removal,
// iteration direction is important to preserve the correct index.
Arrays.sort(viewsToAdd, ViewAtIndex.COMPARATOR);
Arrays.sort(indicesToRemove);
// Apply changes to CSSNode hierarchy
int lastIndexRemoved = -1;
for (int i = indicesToRemove.length - 1; i >= 0; i--) {
int indexToRemove = indicesToRemove[i];
if (indexToRemove == lastIndexRemoved) {
throw new IllegalViewOperationException("Repeated indices in Removal list for view tag: "
+ viewTag);
}
cssNodeToManage.removeChildAt(indicesToRemove[i]);
lastIndexRemoved = indicesToRemove[i];
}
for (int i = 0; i < viewsToAdd.length; i++) {
ViewAtIndex viewAtIndex = viewsToAdd[i];
ReactShadowNode cssNodeToAdd = mShadowNodeRegistry.getNode(viewAtIndex.mTag);
if (cssNodeToAdd == null) {
throw new IllegalViewOperationException("Trying to add unknown view tag: "
+ viewAtIndex.mTag);
}
cssNodeToManage.addChildAt(cssNodeToAdd, viewAtIndex.mIndex);
}
if (!cssNodeToManage.isVirtual() && !cssNodeToManage.isVirtualAnchor()) {
mNativeViewHierarchyOptimizer.handleManageChildren(
cssNodeToManage,
indicesToRemove,
tagsToRemove,
viewsToAdd,
tagsToDelete);
}
for (int i = 0; i < tagsToDelete.length; i++) {
removeShadowNode(mShadowNodeRegistry.getNode(tagsToDelete[i]));
}
}
/**
* Replaces the View specified by oldTag with the View specified by newTag within oldTag's parent.
*/
public void replaceExistingNonRootView(int oldTag, int newTag) {
if (mShadowNodeRegistry.isRootNode(oldTag) || mShadowNodeRegistry.isRootNode(newTag)) {
throw new IllegalViewOperationException("Trying to add or replace a root tag!");
}
ReactShadowNode oldNode = mShadowNodeRegistry.getNode(oldTag);
if (oldNode == null) {
throw new IllegalViewOperationException("Trying to replace unknown view tag: " + oldTag);
}
ReactShadowNode parent = oldNode.getParent();
if (parent == null) {
throw new IllegalViewOperationException("Node is not attached to a parent: " + oldTag);
}
int oldIndex = parent.indexOf(oldNode);
if (oldIndex < 0) {
throw new IllegalStateException("Didn't find child tag in parent");
}
WritableArray tagsToAdd = Arguments.createArray();
tagsToAdd.pushInt(newTag);
WritableArray addAtIndices = Arguments.createArray();
addAtIndices.pushInt(oldIndex);
WritableArray indicesToRemove = Arguments.createArray();
indicesToRemove.pushInt(oldIndex);
manageChildren(parent.getReactTag(), null, null, tagsToAdd, addAtIndices, indicesToRemove);
}
/**
* Method which takes a container tag and then releases all subviews for that container upon
* receipt.
* TODO: The method name is incorrect and will be renamed, #6033872
* @param containerTag the tag of the container for which the subviews must be removed
*/
public void removeSubviewsFromContainerWithID(int containerTag) {
ReactShadowNode containerNode = mShadowNodeRegistry.getNode(containerTag);
if (containerNode == null) {
throw new IllegalViewOperationException(
"Trying to remove subviews of an unknown view tag: " + containerTag);
}
WritableArray indicesToRemove = Arguments.createArray();
for (int childIndex = 0; childIndex < containerNode.getChildCount(); childIndex++) {
indicesToRemove.pushInt(childIndex);
}
manageChildren(containerTag, null, null, null, null, indicesToRemove);
}
/**
* Find the touch target child native view in the supplied root view hierarchy, given a react
* target location.
*
* This method is currently used only by Element Inspector DevTool.
*
* @param reactTag the tag of the root view to traverse
* @param targetX target X location
* @param targetY target Y location
* @param callback will be called if with the identified child view react ID, and measurement
* info. If no view was found, callback will be invoked with no data.
*/
public void findSubviewIn(int reactTag, float targetX, float targetY, Callback callback) {
mOperationsQueue.enqueueFindTargetForTouch(reactTag, targetX, targetY, callback);
}
/**
* Determines the location on screen, width, and height of the given view and returns the values
* via an async callback.
*/
public void measure(int reactTag, Callback callback) {
// This method is called by the implementation of JS touchable interface (see Touchable.js for
// more details) at the moment of touch activation. That is after user starts the gesture from
// a touchable view with a given reactTag, or when user drag finger back into the press
// activation area of a touchable view that have been activated before.
mOperationsQueue.enqueueMeasure(reactTag, callback);
}
/**
* Measures the view specified by tag relative to the given ancestorTag. This means that the
* returned x, y are relative to the origin x, y of the ancestor view. Results are stored in the
* given outputBuffer. We allow ancestor view and measured view to be the same, in which case
* the position always will be (0, 0) and method will only measure the view dimensions.
*/
public void measureLayout(
int tag,
int ancestorTag,
Callback errorCallback,
Callback successCallback) {
try {
measureLayout(tag, ancestorTag, mMeasureBuffer);
float relativeX = PixelUtil.toDIPFromPixel(mMeasureBuffer[0]);
float relativeY = PixelUtil.toDIPFromPixel(mMeasureBuffer[1]);
float width = PixelUtil.toDIPFromPixel(mMeasureBuffer[2]);
float height = PixelUtil.toDIPFromPixel(mMeasureBuffer[3]);
successCallback.invoke(relativeX, relativeY, width, height);
} catch (IllegalViewOperationException e) {
errorCallback.invoke(e.getMessage());
}
}
/**
* Like {@link #measure} and {@link #measureLayout} but measures relative to the immediate parent.
*/
public void measureLayoutRelativeToParent(
int tag,
Callback errorCallback,
Callback successCallback) {
try {
measureLayoutRelativeToParent(tag, mMeasureBuffer);
float relativeX = PixelUtil.toDIPFromPixel(mMeasureBuffer[0]);
float relativeY = PixelUtil.toDIPFromPixel(mMeasureBuffer[1]);
float width = PixelUtil.toDIPFromPixel(mMeasureBuffer[2]);
float height = PixelUtil.toDIPFromPixel(mMeasureBuffer[3]);
successCallback.invoke(relativeX, relativeY, width, height);
} catch (IllegalViewOperationException e) {
errorCallback.invoke(e.getMessage());
}
}
/**
* Invoked at the end of the transaction to commit any updates to the node hierarchy.
*/
public void dispatchViewUpdates(EventDispatcher eventDispatcher, int batchId) {
for (int i = 0; i < mShadowNodeRegistry.getRootNodeCount(); i++) {
int tag = mShadowNodeRegistry.getRootTag(i);
ReactShadowNode cssRoot = mShadowNodeRegistry.getNode(tag);
notifyOnBeforeLayoutRecursive(cssRoot);
SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "cssRoot.calculateLayout")
.arg("rootTag", tag)
.flush();
try {
cssRoot.calculateLayout(mLayoutContext);
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
applyUpdatesRecursive(cssRoot, 0f, 0f, eventDispatcher);
}
mNativeViewHierarchyOptimizer.onBatchComplete();
mOperationsQueue.dispatchViewUpdates(batchId);
}
/**
* Registers a new Animation that can then be added to a View using {@link #addAnimation}.
*/
public void registerAnimation(Animation animation) {
mOperationsQueue.enqueueRegisterAnimation(animation);
}
/**
* Adds an Animation previously registered with {@link #registerAnimation} to a View and starts it
*/
public void addAnimation(int reactTag, int animationID, Callback onSuccess) {
assertViewExists(reactTag, "addAnimation");
mOperationsQueue.enqueueAddAnimation(reactTag, animationID, onSuccess);
}
/**
* Removes an existing Animation, canceling it if it was in progress.
*/
public void removeAnimation(int reactTag, int animationID) {
assertViewExists(reactTag, "removeAnimation");
mOperationsQueue.enqueueRemoveAnimation(animationID);
}
public void setJSResponder(int reactTag, boolean blockNativeResponder) {
assertViewExists(reactTag, "setJSResponder");
ReactShadowNode node = mShadowNodeRegistry.getNode(reactTag);
while (node.isVirtual() || node.isLayoutOnly()) {
node = node.getParent();
}
mOperationsQueue.enqueueSetJSResponder(node.getReactTag(), reactTag, blockNativeResponder);
}
public void clearJSResponder() {
mOperationsQueue.enqueueClearJSResponder();
}
public void dispatchViewManagerCommand(int reactTag, int commandId, ReadableArray commandArgs) {
assertViewExists(reactTag, "dispatchViewManagerCommand");
mOperationsQueue.enqueueDispatchCommand(reactTag, commandId, commandArgs);
}
/**
* Show a PopupMenu.
*
* @param reactTag the tag of the anchor view (the PopupMenu is displayed next to this view); this
* needs to be the tag of a native view (shadow views can not be anchors)
* @param items the menu items as an array of strings
* @param error will be called if there is an error displaying the menu
* @param success will be called with the position of the selected item as the first argument, or
* no arguments if the menu is dismissed
*/
public void showPopupMenu(int reactTag, ReadableArray items, Callback error, Callback success) {
assertViewExists(reactTag, "showPopupMenu");
mOperationsQueue.enqueueShowPopupMenu(reactTag, items, error, success);
}
public void sendAccessibilityEvent(int tag, int eventType) {
mOperationsQueue.enqueueSendAccessibilityEvent(tag, eventType);
}
public void onHostResume() {
mOperationsQueue.resumeFrameCallback();
}
public void onHostPause() {
mOperationsQueue.pauseFrameCallback();
}
public void onHostDestroy() {
}
public void setViewHierarchyUpdateDebugListener(
@Nullable NotThreadSafeViewHierarchyUpdateDebugListener listener) {
mOperationsQueue.setViewHierarchyUpdateDebugListener(listener);
}
private void removeShadowNode(ReactShadowNode nodeToRemove) {
mNativeViewHierarchyOptimizer.handleRemoveNode(nodeToRemove);
for (int i = nodeToRemove.getChildCount() - 1; i >= 0; i--) {
removeShadowNode(nodeToRemove.getChildAt(i));
}
nodeToRemove.removeAllChildren();
}
private void measureLayout(int tag, int ancestorTag, int[] outputBuffer) {
ReactShadowNode node = mShadowNodeRegistry.getNode(tag);
ReactShadowNode ancestor = mShadowNodeRegistry.getNode(ancestorTag);
if (node == null || ancestor == null) {
throw new IllegalViewOperationException(
"Tag " + (node == null ? tag : ancestorTag) + " does not exist");
}
if (node != ancestor) {
ReactShadowNode currentParent = node.getParent();
while (currentParent != ancestor) {
if (currentParent == null) {
throw new IllegalViewOperationException(
"Tag " + ancestorTag + " is not an ancestor of tag " + tag);
}
currentParent = currentParent.getParent();
}
}
measureLayoutRelativeToVerifiedAncestor(node, ancestor, outputBuffer);
}
private void measureLayoutRelativeToParent(int tag, int[] outputBuffer) {
ReactShadowNode node = mShadowNodeRegistry.getNode(tag);
if (node == null) {
throw new IllegalViewOperationException("No native view for tag " + tag + " exists!");
}
ReactShadowNode parent = node.getParent();
if (parent == null) {
throw new IllegalViewOperationException("View with tag " + tag + " doesn't have a parent!");
}
measureLayoutRelativeToVerifiedAncestor(node, parent, outputBuffer);
}
private void measureLayoutRelativeToVerifiedAncestor(
ReactShadowNode node,
ReactShadowNode ancestor,
int[] outputBuffer) {
int offsetX = 0;
int offsetY = 0;
if (node != ancestor) {
offsetX = Math.round(node.getLayoutX());
offsetY = Math.round(node.getLayoutY());
ReactShadowNode current = node.getParent();
while (current != ancestor) {
Assertions.assertNotNull(current);
assertNodeDoesNotNeedCustomLayoutForChildren(current);
offsetX += Math.round(current.getLayoutX());
offsetY += Math.round(current.getLayoutY());
current = current.getParent();
}
assertNodeDoesNotNeedCustomLayoutForChildren(ancestor);
}
outputBuffer[0] = offsetX;
outputBuffer[1] = offsetY;
outputBuffer[2] = node.getScreenWidth();
outputBuffer[3] = node.getScreenHeight();
}
private void assertViewExists(int reactTag, String operationNameForExceptionMessage) {
if (mShadowNodeRegistry.getNode(reactTag) == null) {
throw new IllegalViewOperationException(
"Unable to execute operation " + operationNameForExceptionMessage + " on view with " +
"tag: " + reactTag + ", since the view does not exists");
}
}
private void assertNodeDoesNotNeedCustomLayoutForChildren(ReactShadowNode node) {
ViewManager viewManager = Assertions.assertNotNull(mViewManagers.get(node.getViewClass()));
ViewGroupManager viewGroupManager;
if (viewManager instanceof ViewGroupManager) {
viewGroupManager = (ViewGroupManager) viewManager;
} else {
throw new IllegalViewOperationException("Trying to use view " + node.getViewClass() +
" as a parent, but its Manager doesn't extends ViewGroupManager");
}
if (viewGroupManager != null && viewGroupManager.needsCustomLayoutForChildren()) {
throw new IllegalViewOperationException(
"Trying to measure a view using measureLayout/measureLayoutRelativeToParent relative to" +
" an ancestor that requires custom layout for it's children (" + node.getViewClass() +
"). Use measure instead.");
}
}
private void notifyOnBeforeLayoutRecursive(ReactShadowNode cssNode) {
if (!cssNode.hasUpdates()) {
return;
}
for (int i = 0; i < cssNode.getChildCount(); i++) {
notifyOnBeforeLayoutRecursive(cssNode.getChildAt(i));
}
cssNode.onBeforeLayout();
}
private void applyUpdatesRecursive(
ReactShadowNode cssNode,
float absoluteX,
float absoluteY,
EventDispatcher eventDispatcher) {
if (!cssNode.hasUpdates()) {
return;
}
if (!cssNode.isVirtualAnchor()) {
for (int i = 0; i < cssNode.getChildCount(); i++) {
applyUpdatesRecursive(
cssNode.getChildAt(i),
absoluteX + cssNode.getLayoutX(),
absoluteY + cssNode.getLayoutY(),
eventDispatcher);
}
}
int tag = cssNode.getReactTag();
if (!mShadowNodeRegistry.isRootNode(tag)) {
cssNode.dispatchUpdates(
absoluteX,
absoluteY,
mOperationsQueue,
mNativeViewHierarchyOptimizer,
eventDispatcher);
}
cssNode.markUpdateSeen();
}
}

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@ -72,31 +72,23 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
private static final int ROOT_VIEW_TAG_INCREMENT = 10;
private final EventDispatcher mEventDispatcher;
private final ShadowNodeRegistry mShadowNodeRegistry = new ShadowNodeRegistry();
private final ViewManagerRegistry mViewManagers;
private final CSSLayoutContext mLayoutContext = new CSSLayoutContext();
private final Map<String, Object> mModuleConstants;
private final UIViewOperationQueue mOperationsQueue;
private final NativeViewHierarchyOptimizer mNativeViewHierarchyOptimizer;
private final int[] mMeasureBuffer = new int[4];
private final UIImplementation mUIImplementation;
private int mNextRootViewTag = 1;
private int mBatchId = 0;
public UIManagerModule(ReactApplicationContext reactContext, List<ViewManager> viewManagerList) {
super(reactContext);
mViewManagers = new ViewManagerRegistry(viewManagerList);
mEventDispatcher = new EventDispatcher(reactContext);
mOperationsQueue = new UIViewOperationQueue(
reactContext,
new NativeViewHierarchyManager(mViewManagers));
mNativeViewHierarchyOptimizer = new NativeViewHierarchyOptimizer(
mOperationsQueue,
mShadowNodeRegistry);
DisplayMetrics displayMetrics = reactContext.getResources().getDisplayMetrics();
DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
mModuleConstants = createConstants(displayMetrics, viewManagerList);
reactContext.addLifecycleEventListener(this);
mUIImplementation = new UIImplementation(
reactContext,
new ViewManagerRegistry(viewManagerList));
}
@Override
@ -111,16 +103,17 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
@Override
public void onHostResume() {
mOperationsQueue.resumeFrameCallback();
mUIImplementation.onHostResume();
}
@Override
public void onHostPause() {
mOperationsQueue.pauseFrameCallback();
mUIImplementation.onHostPause();
}
@Override
public void onHostDestroy() {
mUIImplementation.onHostDestroy();
}
@Override
@ -158,22 +151,23 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
final int tag = mNextRootViewTag;
mNextRootViewTag += ROOT_VIEW_TAG_INCREMENT;
final ReactShadowNode rootCSSNode = new ReactShadowNode();
rootCSSNode.setReactTag(tag);
final ThemedReactContext themedRootContext =
new ThemedReactContext(getReactApplicationContext(), rootView.getContext());
rootCSSNode.setThemedContext(themedRootContext);
final int width;
final int height;
// If LayoutParams sets size explicitly, we can use that. Otherwise get the size from the view.
if (rootView.getLayoutParams() != null &&
rootView.getLayoutParams().width > 0 &&
rootView.getLayoutParams().height > 0) {
rootCSSNode.setStyleWidth(rootView.getLayoutParams().width);
rootCSSNode.setStyleHeight(rootView.getLayoutParams().height);
width = rootView.getLayoutParams().width;
height = rootView.getLayoutParams().height;
} else {
rootCSSNode.setStyleWidth(rootView.getWidth());
rootCSSNode.setStyleHeight(rootView.getHeight());
width = rootView.getWidth();
height = rootView.getHeight();
}
rootCSSNode.setViewClassName("Root");
final ThemedReactContext themedRootContext =
new ThemedReactContext(getReactApplicationContext(), rootView.getContext());
mUIImplementation.registerRootView(rootView, tag, width, height, themedRootContext);
rootView.setOnSizeChangedListener(
new SizeMonitoringFrameLayout.OnSizeChangedListener() {
@ -183,98 +177,39 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
new Runnable() {
@Override
public void run() {
updateRootNodeSize(rootCSSNode, width, height);
updateRootNodeSize(tag, width, height);
}
});
}
});
mShadowNodeRegistry.addRootNode(rootCSSNode);
// register it within NativeViewHierarchyManager
mOperationsQueue.addRootView(tag, rootView, themedRootContext);
return tag;
}
@ReactMethod
public void removeRootView(int rootViewTag) {
mShadowNodeRegistry.removeRootNode(rootViewTag);
mOperationsQueue.enqueueRemoveRootView(rootViewTag);
mUIImplementation.removeRootView(rootViewTag);
}
private void updateRootNodeSize(ReactShadowNode rootCSSNode, int newWidth, int newHeight) {
private void updateRootNodeSize(int rootViewTag, int newWidth, int newHeight) {
getReactApplicationContext().assertOnNativeModulesQueueThread();
rootCSSNode.setStyleWidth(newWidth);
rootCSSNode.setStyleHeight(newHeight);
// If we're in the middle of a batch, the change will automatically be dispatched at the end of
// the batch. As all batches are executed as a single runnable on the event queue this should
// always be empty, but that calling architecture is an implementation detail.
if (mOperationsQueue.isEmpty()) {
dispatchViewUpdates(-1); // -1 = no associated batch id
}
mUIImplementation.updateRootNodeSize(rootViewTag, newWidth, newHeight, mEventDispatcher);
}
@ReactMethod
public void createView(int tag, String className, int rootViewTag, ReadableMap props) {
ViewManager viewManager = mViewManagers.get(className);
ReactShadowNode cssNode = viewManager.createShadowNodeInstance();
ReactShadowNode rootNode = mShadowNodeRegistry.getNode(rootViewTag);
cssNode.setReactTag(tag);
cssNode.setViewClassName(className);
cssNode.setRootNode(rootNode);
cssNode.setThemedContext(rootNode.getThemedContext());
mShadowNodeRegistry.addNode(cssNode);
CatalystStylesDiffMap styles = null;
if (props != null) {
styles = new CatalystStylesDiffMap(props);
cssNode.updateProperties(styles);
}
if (!cssNode.isVirtual()) {
mNativeViewHierarchyOptimizer.handleCreateView(cssNode, rootViewTag, styles);
}
mUIImplementation.createView(tag, className, rootViewTag, props);
}
@ReactMethod
public void dropViews(ReadableArray viewTags) {
int size = viewTags.size(), realViewsCount = 0;
int realViewTags[] = new int[size];
for (int i = 0; i < size; i++) {
int tag = viewTags.getInt(i);
ReactShadowNode cssNode = mShadowNodeRegistry.getNode(tag);
if (!cssNode.isVirtual()) {
realViewTags[realViewsCount++] = tag;
}
mShadowNodeRegistry.removeNode(tag);
}
if (realViewsCount > 0) {
mNativeViewHierarchyOptimizer.handleDropViews(realViewTags, realViewsCount);
}
mUIImplementation.dropViews(viewTags);
}
@ReactMethod
public void updateView(int tag, String className, ReadableMap props) {
ViewManager viewManager = mViewManagers.get(className);
if (viewManager == null) {
throw new IllegalViewOperationException("Got unknown view type: " + className);
}
ReactShadowNode cssNode = mShadowNodeRegistry.getNode(tag);
if (cssNode == null) {
throw new IllegalViewOperationException("Trying to update non-existent view with tag " + tag);
}
if (props != null) {
CatalystStylesDiffMap styles = new CatalystStylesDiffMap(props);
cssNode.updateProperties(styles);
if (!cssNode.isVirtual()) {
mNativeViewHierarchyOptimizer.handleUpdateView(cssNode, className, styles);
}
}
mUIImplementation.updateView(tag, className, props);
}
/**
@ -296,115 +231,13 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
@Nullable ReadableArray addChildTags,
@Nullable ReadableArray addAtIndices,
@Nullable ReadableArray removeFrom) {
ReactShadowNode cssNodeToManage = mShadowNodeRegistry.getNode(viewTag);
int numToMove = moveFrom == null ? 0 : moveFrom.size();
int numToAdd = addChildTags == null ? 0 : addChildTags.size();
int numToRemove = removeFrom == null ? 0 : removeFrom.size();
if (numToMove != 0 && (moveTo == null || numToMove != moveTo.size())) {
throw new IllegalViewOperationException("Size of moveFrom != size of moveTo!");
}
if (numToAdd != 0 && (addAtIndices == null || numToAdd != addAtIndices.size())) {
throw new IllegalViewOperationException("Size of addChildTags != size of addAtIndices!");
}
// We treat moves as an add and a delete
ViewAtIndex[] viewsToAdd = new ViewAtIndex[numToMove + numToAdd];
int[] indicesToRemove = new int[numToMove + numToRemove];
int[] tagsToRemove = new int[indicesToRemove.length];
int[] tagsToDelete = new int[numToRemove];
if (numToMove > 0) {
Assertions.assertNotNull(moveFrom);
Assertions.assertNotNull(moveTo);
for (int i = 0; i < numToMove; i++) {
int moveFromIndex = moveFrom.getInt(i);
int tagToMove = cssNodeToManage.getChildAt(moveFromIndex).getReactTag();
viewsToAdd[i] = new ViewAtIndex(
tagToMove,
moveTo.getInt(i));
indicesToRemove[i] = moveFromIndex;
tagsToRemove[i] = tagToMove;
}
}
if (numToAdd > 0) {
Assertions.assertNotNull(addChildTags);
Assertions.assertNotNull(addAtIndices);
for (int i = 0; i < numToAdd; i++) {
int viewTagToAdd = addChildTags.getInt(i);
int indexToAddAt = addAtIndices.getInt(i);
viewsToAdd[numToMove + i] = new ViewAtIndex(viewTagToAdd, indexToAddAt);
}
}
if (numToRemove > 0) {
Assertions.assertNotNull(removeFrom);
for (int i = 0; i < numToRemove; i++) {
int indexToRemove = removeFrom.getInt(i);
int tagToRemove = cssNodeToManage.getChildAt(indexToRemove).getReactTag();
indicesToRemove[numToMove + i] = indexToRemove;
tagsToRemove[numToMove + i] = tagToRemove;
tagsToDelete[i] = tagToRemove;
}
}
// NB: moveFrom and removeFrom are both relative to the starting state of the View's children.
// moveTo and addAt are both relative to the final state of the View's children.
//
// 1) Sort the views to add and indices to remove by index
// 2) Iterate the indices being removed from high to low and remove them. Going high to low
// makes sure we remove the correct index when there are multiple to remove.
// 3) Iterate the views being added by index low to high and add them. Like the view removal,
// iteration direction is important to preserve the correct index.
Arrays.sort(viewsToAdd, ViewAtIndex.COMPARATOR);
Arrays.sort(indicesToRemove);
// Apply changes to CSSNode hierarchy
int lastIndexRemoved = -1;
for (int i = indicesToRemove.length - 1; i >= 0; i--) {
int indexToRemove = indicesToRemove[i];
if (indexToRemove == lastIndexRemoved) {
throw new IllegalViewOperationException("Repeated indices in Removal list for view tag: "
+ viewTag);
}
cssNodeToManage.removeChildAt(indicesToRemove[i]);
lastIndexRemoved = indicesToRemove[i];
}
for (int i = 0; i < viewsToAdd.length; i++) {
ViewAtIndex viewAtIndex = viewsToAdd[i];
ReactShadowNode cssNodeToAdd = mShadowNodeRegistry.getNode(viewAtIndex.mTag);
if (cssNodeToAdd == null) {
throw new IllegalViewOperationException("Trying to add unknown view tag: "
+ viewAtIndex.mTag);
}
cssNodeToManage.addChildAt(cssNodeToAdd, viewAtIndex.mIndex);
}
if (!cssNodeToManage.isVirtual() && !cssNodeToManage.isVirtualAnchor()) {
mNativeViewHierarchyOptimizer.handleManageChildren(
cssNodeToManage,
indicesToRemove,
tagsToRemove,
viewsToAdd,
tagsToDelete);
}
for (int i = 0; i < tagsToDelete.length; i++) {
removeShadowNode(mShadowNodeRegistry.getNode(tagsToDelete[i]));
}
}
private void removeShadowNode(ReactShadowNode nodeToRemove) {
mNativeViewHierarchyOptimizer.handleRemoveNode(nodeToRemove);
for (int i = nodeToRemove.getChildCount() - 1; i >= 0; i--) {
removeShadowNode(nodeToRemove.getChildAt(i));
}
nodeToRemove.removeAllChildren();
mUIImplementation.manageChildren(
viewTag,
moveFrom,
moveTo,
addChildTags,
addAtIndices,
removeFrom);
}
/**
@ -414,35 +247,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
*/
@ReactMethod
public void replaceExistingNonRootView(int oldTag, int newTag) {
if (mShadowNodeRegistry.isRootNode(oldTag) || mShadowNodeRegistry.isRootNode(newTag)) {
throw new IllegalViewOperationException("Trying to add or replace a root tag!");
}
ReactShadowNode oldNode = mShadowNodeRegistry.getNode(oldTag);
if (oldNode == null) {
throw new IllegalViewOperationException("Trying to replace unknown view tag: " + oldTag);
}
ReactShadowNode parent = oldNode.getParent();
if (parent == null) {
throw new IllegalViewOperationException("Node is not attached to a parent: " + oldTag);
}
int oldIndex = parent.indexOf(oldNode);
if (oldIndex < 0) {
throw new IllegalStateException("Didn't find child tag in parent");
}
WritableArray tagsToAdd = Arguments.createArray();
tagsToAdd.pushInt(newTag);
WritableArray addAtIndices = Arguments.createArray();
addAtIndices.pushInt(oldIndex);
WritableArray indicesToRemove = Arguments.createArray();
indicesToRemove.pushInt(oldIndex);
manageChildren(parent.getReactTag(), null, null, tagsToAdd, addAtIndices, indicesToRemove);
mUIImplementation.replaceExistingNonRootView(oldTag, newTag);
}
/**
@ -453,18 +258,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
*/
@ReactMethod
public void removeSubviewsFromContainerWithID(int containerTag) {
ReactShadowNode containerNode = mShadowNodeRegistry.getNode(containerTag);
if (containerNode == null) {
throw new IllegalViewOperationException(
"Trying to remove subviews of an unknown view tag: " + containerTag);
}
WritableArray indicesToRemove = Arguments.createArray();
for (int childIndex = 0; childIndex < containerNode.getChildCount(); childIndex++) {
indicesToRemove.pushInt(childIndex);
}
manageChildren(containerTag, null, null, null, null, indicesToRemove);
mUIImplementation.removeSubviewsFromContainerWithID(containerTag);
}
/**
@ -472,12 +266,8 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
* via an async callback.
*/
@ReactMethod
public void measure(final int reactTag, final Callback callback) {
// This method is called by the implementation of JS touchable interface (see Touchable.js for
// more details) at the moment of touch activation. That is after user starts the gesture from
// a touchable view with a given reactTag, or when user drag finger back into the press
// activation area of a touchable view that have been activated before.
mOperationsQueue.enqueueMeasure(reactTag, callback);
public void measure(int reactTag, Callback callback) {
mUIImplementation.measure(reactTag, callback);
}
/**
@ -496,16 +286,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
int ancestorTag,
Callback errorCallback,
Callback successCallback) {
try {
measureLayout(tag, ancestorTag, mMeasureBuffer);
float relativeX = PixelUtil.toDIPFromPixel(mMeasureBuffer[0]);
float relativeY = PixelUtil.toDIPFromPixel(mMeasureBuffer[1]);
float width = PixelUtil.toDIPFromPixel(mMeasureBuffer[2]);
float height = PixelUtil.toDIPFromPixel(mMeasureBuffer[3]);
successCallback.invoke(relativeX, relativeY, width, height);
} catch (IllegalViewOperationException e) {
errorCallback.invoke(e.getMessage());
}
mUIImplementation.measureLayout(tag, ancestorTag, errorCallback, successCallback);
}
/**
@ -520,94 +301,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
int tag,
Callback errorCallback,
Callback successCallback) {
try {
measureLayoutRelativeToParent(tag, mMeasureBuffer);
float relativeX = PixelUtil.toDIPFromPixel(mMeasureBuffer[0]);
float relativeY = PixelUtil.toDIPFromPixel(mMeasureBuffer[1]);
float width = PixelUtil.toDIPFromPixel(mMeasureBuffer[2]);
float height = PixelUtil.toDIPFromPixel(mMeasureBuffer[3]);
successCallback.invoke(relativeX, relativeY, width, height);
} catch (IllegalViewOperationException e) {
errorCallback.invoke(e.getMessage());
}
}
private void measureLayout(int tag, int ancestorTag, int[] outputBuffer) {
ReactShadowNode node = mShadowNodeRegistry.getNode(tag);
ReactShadowNode ancestor = mShadowNodeRegistry.getNode(ancestorTag);
if (node == null || ancestor == null) {
throw new IllegalViewOperationException(
"Tag " + (node == null ? tag : ancestorTag) + " does not exist");
}
if (node != ancestor) {
ReactShadowNode currentParent = node.getParent();
while (currentParent != ancestor) {
if (currentParent == null) {
throw new IllegalViewOperationException(
"Tag " + ancestorTag + " is not an ancestor of tag " + tag);
}
currentParent = currentParent.getParent();
}
}
measureLayoutRelativeToVerifiedAncestor(node, ancestor, outputBuffer);
}
private void measureLayoutRelativeToParent(int tag, int[] outputBuffer) {
ReactShadowNode node = mShadowNodeRegistry.getNode(tag);
if (node == null) {
throw new IllegalViewOperationException("No native view for tag " + tag + " exists!");
}
ReactShadowNode parent = node.getParent();
if (parent == null) {
throw new IllegalViewOperationException("View with tag " + tag + " doesn't have a parent!");
}
measureLayoutRelativeToVerifiedAncestor(node, parent, outputBuffer);
}
private void measureLayoutRelativeToVerifiedAncestor(
ReactShadowNode node,
ReactShadowNode ancestor,
int[] outputBuffer) {
int offsetX = 0;
int offsetY = 0;
if (node != ancestor) {
offsetX = Math.round(node.getLayoutX());
offsetY = Math.round(node.getLayoutY());
ReactShadowNode current = node.getParent();
while (current != ancestor) {
Assertions.assertNotNull(current);
assertNodeDoesNotNeedCustomLayoutForChildren(current);
offsetX += Math.round(current.getLayoutX());
offsetY += Math.round(current.getLayoutY());
current = current.getParent();
}
assertNodeDoesNotNeedCustomLayoutForChildren(ancestor);
}
outputBuffer[0] = offsetX;
outputBuffer[1] = offsetY;
outputBuffer[2] = node.getScreenWidth();
outputBuffer[3] = node.getScreenHeight();
}
private void assertNodeDoesNotNeedCustomLayoutForChildren(ReactShadowNode node) {
ViewManager viewManager = Assertions.assertNotNull(mViewManagers.get(node.getViewClass()));
ViewGroupManager viewGroupManager;
if (viewManager instanceof ViewGroupManager) {
viewGroupManager = (ViewGroupManager) viewManager;
} else {
throw new IllegalViewOperationException("Trying to use view " + node.getViewClass() +
" as a parent, but its Manager doesn't extends ViewGroupManager");
}
if (viewGroupManager != null && viewGroupManager.needsCustomLayoutForChildren()) {
throw new IllegalViewOperationException(
"Trying to measure a view using measureLayout/measureLayoutRelativeToParent relative to" +
" an ancestor that requires custom layout for it's children (" + node.getViewClass() +
"). Use measure instead.");
}
mUIImplementation.measureLayoutRelativeToParent(tag, errorCallback, successCallback);
}
/**
@ -626,7 +320,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
final int reactTag,
final ReadableArray point,
final Callback callback) {
mOperationsQueue.enqueueFindTargetForTouch(
mUIImplementation.findSubviewIn(
reactTag,
Math.round(PixelUtil.toPixelFromDIP(point.getDouble(0))),
Math.round(PixelUtil.toPixelFromDIP(point.getDouble(1))),
@ -637,47 +331,36 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
* Registers a new Animation that can then be added to a View using {@link #addAnimation}.
*/
public void registerAnimation(Animation animation) {
mOperationsQueue.enqueueRegisterAnimation(animation);
mUIImplementation.registerAnimation(animation);
}
/**
* Adds an Animation previously registered with {@link #registerAnimation} to a View and starts it
*/
public void addAnimation(final int reactTag, final int animationID, final Callback onSuccess) {
assertViewExists(reactTag, "addAnimation");
mOperationsQueue.enqueueAddAnimation(reactTag, animationID, onSuccess);
public void addAnimation(int reactTag, int animationID, Callback onSuccess) {
mUIImplementation.addAnimation(reactTag, animationID, onSuccess);
}
/**
* Removes an existing Animation, canceling it if it was in progress.
*/
public void removeAnimation(int reactTag, int animationID) {
assertViewExists(reactTag, "removeAnimation");
mOperationsQueue.enqueueRemoveAnimation(animationID);
mUIImplementation.removeAnimation(reactTag, animationID);
}
@ReactMethod
public void setJSResponder(int reactTag, boolean blockNativeResponder) {
assertViewExists(reactTag, "setJSResponder");
ReactShadowNode node = mShadowNodeRegistry.getNode(reactTag);
while (node.isVirtual() || node.isLayoutOnly()) {
node = node.getParent();
}
mOperationsQueue.enqueueSetJSResponder(node.getReactTag(), reactTag, blockNativeResponder);
mUIImplementation.setJSResponder(reactTag, blockNativeResponder);
}
@ReactMethod
public void clearJSResponder() {
mOperationsQueue.enqueueClearJSResponder();
mUIImplementation.clearJSResponder();
}
@ReactMethod
public void dispatchViewManagerCommand(
int reactTag,
int commandId,
ReadableArray commandArgs) {
assertViewExists(reactTag, "dispatchViewManagerCommand");
mOperationsQueue.enqueueDispatchCommand(reactTag, commandId, commandArgs);
public void dispatchViewManagerCommand(int reactTag, int commandId, ReadableArray commandArgs) {
mUIImplementation.dispatchViewManagerCommand(reactTag, commandId, commandArgs);
}
/**
@ -691,13 +374,8 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
* no arguments if the menu is dismissed
*/
@ReactMethod
public void showPopupMenu(
int reactTag,
ReadableArray items,
Callback error,
Callback success) {
assertViewExists(reactTag, "showPopupMenu");
mOperationsQueue.enqueueShowPopupMenu(reactTag, items, error, success);
public void showPopupMenu(int reactTag, ReadableArray items, Callback error, Callback success) {
mUIImplementation.showPopupMenu(reactTag, items, error, success);
}
@ReactMethod
@ -708,14 +386,6 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
// TODO(6588266): Implement if required
}
private void assertViewExists(int reactTag, String operationNameForExceptionMessage) {
if (mShadowNodeRegistry.getNode(reactTag) == null) {
throw new IllegalViewOperationException(
"Unable to execute operation " + operationNameForExceptionMessage + " on view with " +
"tag: " + reactTag + ", since the view does not exists");
}
}
/**
* To implement the transactional requirement mentioned in the class javadoc, we only commit
* UI changes to the actual view hierarchy once a batch of JS->Java calls have been completed.
@ -739,7 +409,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
.arg("BatchId", batchId)
.flush();
try {
dispatchViewUpdates(batchId);
mUIImplementation.dispatchViewUpdates(mEventDispatcher, batchId);
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
@ -747,73 +417,15 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
public void setViewHierarchyUpdateDebugListener(
@Nullable NotThreadSafeViewHierarchyUpdateDebugListener listener) {
mOperationsQueue.setViewHierarchyUpdateDebugListener(listener);
mUIImplementation.setViewHierarchyUpdateDebugListener(listener);
}
public EventDispatcher getEventDispatcher() {
return mEventDispatcher;
}
private void dispatchViewUpdates(final int batchId) {
for (int i = 0; i < mShadowNodeRegistry.getRootNodeCount(); i++) {
int tag = mShadowNodeRegistry.getRootTag(i);
ReactShadowNode cssRoot = mShadowNodeRegistry.getNode(tag);
notifyOnBeforeLayoutRecursive(cssRoot);
SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "cssRoot.calculateLayout")
.arg("rootTag", tag)
.flush();
try {
cssRoot.calculateLayout(mLayoutContext);
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
applyUpdatesRecursive(cssRoot, 0f, 0f);
}
mNativeViewHierarchyOptimizer.onBatchComplete();
mOperationsQueue.dispatchViewUpdates(batchId);
}
private void notifyOnBeforeLayoutRecursive(ReactShadowNode cssNode) {
if (!cssNode.hasUpdates()) {
return;
}
for (int i = 0; i < cssNode.getChildCount(); i++) {
notifyOnBeforeLayoutRecursive(cssNode.getChildAt(i));
}
cssNode.onBeforeLayout();
}
private void applyUpdatesRecursive(ReactShadowNode cssNode, float absoluteX, float absoluteY) {
if (!cssNode.hasUpdates()) {
return;
}
if (!cssNode.isVirtualAnchor()) {
for (int i = 0; i < cssNode.getChildCount(); i++) {
applyUpdatesRecursive(
cssNode.getChildAt(i),
absoluteX + cssNode.getLayoutX(),
absoluteY + cssNode.getLayoutY());
}
}
int tag = cssNode.getReactTag();
if (!mShadowNodeRegistry.isRootNode(tag)) {
cssNode.dispatchUpdates(
absoluteX,
absoluteY,
mOperationsQueue,
mNativeViewHierarchyOptimizer,
mEventDispatcher);
}
cssNode.markUpdateSeen();
}
@ReactMethod
public void sendAccessibilityEvent(int tag, int eventType) {
mOperationsQueue.enqueueSendAccessibilityEvent(tag, eventType);
mUIImplementation.sendAccessibilityEvent(tag, eventType);
}
}