private void updateSubviewClipStatus(View subview) {
if (!mRemoveClippedSubviews || getParent() == null) {
return;
}
Assertions.assertNotNull(mClippingRect);
Assertions.assertNotNull(mAllChildren);
// do fast check whether intersect state changed
sHelperRect.set(subview.getLeft(), subview.getTop(), subview.getRight(), subview.getBottom());
boolean intersects =
mClippingRect.intersects(
sHelperRect.left, sHelperRect.top, sHelperRect.right, sHelperRect.bottom);
// If it was intersecting before, should be attached to the parent
boolean oldIntersects = (subview.getParent() != null);
if (intersects != oldIntersects) {
int clippedSoFar = 0;
for (int i = 0; i < mAllChildrenCount; i++) {
if (mAllChildren[i] == subview) {
updateSubviewClipStatus(mClippingRect, i, clippedSoFar);
break;
}
if (mAllChildren[i].getParent() == null) {
clippedSoFar++;
}
}
}
}
@Override
public void setRemoveClippedSubviews(boolean removeClippedSubviews) {
if (removeClippedSubviews == mRemoveClippedSubviews) {
return;
}
mRemoveClippedSubviews = removeClippedSubviews;
if (removeClippedSubviews) {
mClippingRect = new Rect();
ReactClippingViewGroupHelper.calculateClippingRect(this, mClippingRect);
mAllChildrenCount = getChildCount();
int initialSize = Math.max(12, mAllChildrenCount);
mAllChildren = new View[initialSize];
mChildrenLayoutChangeListener = new ChildrenLayoutChangeListener(this);
for (int i = 0; i < mAllChildrenCount; i++) {
View child = getChildAt(i);
mAllChildren[i] = child;
child.addOnLayoutChangeListener(mChildrenLayoutChangeListener);
}
updateClippingRect();
} else {
// Add all clipped views back, deallocate additional arrays, remove layoutChangeListener
Assertions.assertNotNull(mClippingRect);
Assertions.assertNotNull(mAllChildren);
Assertions.assertNotNull(mChildrenLayoutChangeListener);
for (int i = 0; i < mAllChildrenCount; i++) {
mAllChildren[i].removeOnLayoutChangeListener(mChildrenLayoutChangeListener);
}
getDrawingRect(mClippingRect);
updateClippingToRect(mClippingRect);
mAllChildren = null;
mClippingRect = null;
mAllChildrenCount = 0;
mChildrenLayoutChangeListener = null;
}
}
/**
* Instantiates a new {@link ReactInstanceManagerImpl}. Before calling {@code build}, the
* following must be called:
*
* <ul>
* <li>{@link #setApplication}
* <li>{@link #setJSBundleFile} or {@link #setJSMainModuleName}
* </ul>
*/
public ReactInstanceManager build() {
Assertions.assertCondition(
mUseDeveloperSupport || mJSBundleFile != null,
"JS Bundle File has to be provided when dev support is disabled");
Assertions.assertCondition(
mJSMainModuleName != null || mJSBundleFile != null,
"Either MainModuleName or JS Bundle File needs to be provided");
if (mUIImplementationProvider == null) {
// create default UIImplementationProvider if the provided one is null.
mUIImplementationProvider = new UIImplementationProvider();
}
return new ReactInstanceManagerImpl(
Assertions.assertNotNull(
mApplication, "Application property has not been set with this builder"),
mJSBundleFile,
mJSMainModuleName,
mPackages,
mUseDeveloperSupport,
mBridgeIdleDebugListener,
Assertions.assertNotNull(mInitialLifecycleState, "Initial lifecycle state was not set"),
mUIImplementationProvider,
mNativeModuleCallExceptionHandler,
mJSCConfig);
}
private void setupReactContext(ReactApplicationContext reactContext) {
Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "setupReactContext");
UiThreadUtil.assertOnUiThread();
Assertions.assertCondition(mCurrentReactContext == null);
mCurrentReactContext = Assertions.assertNotNull(reactContext);
CatalystInstance catalystInstance =
Assertions.assertNotNull(reactContext.getCatalystInstance());
catalystInstance.initialize();
mDevSupportManager.onNewReactContextCreated(reactContext);
mMemoryPressureRouter.addMemoryPressureListener(catalystInstance);
moveReactContextToCurrentLifecycleState();
for (ReactRootView rootView : mAttachedRootViews) {
attachMeasuredRootViewToInstance(rootView, catalystInstance);
}
ReactInstanceEventListener[] listeners =
new ReactInstanceEventListener[mReactInstanceEventListeners.size()];
listeners = mReactInstanceEventListeners.toArray(listeners);
for (ReactInstanceEventListener listener : listeners) {
listener.onReactContextInitialized(reactContext);
}
Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
}
@Override
public void dispatch(RCTEventEmitter rctEventEmitter) {
TouchesHelper.sendTouchEvent(
rctEventEmitter,
Assertions.assertNotNull(mTouchEventType),
getViewTag(),
Assertions.assertNotNull(mMotionEvent));
}
/*package*/ void removeAllViewsWithSubviewClippingEnabled() {
Assertions.assertCondition(mRemoveClippedSubviews);
Assertions.assertNotNull(mAllChildren);
for (int i = 0; i < mAllChildrenCount; i++) {
mAllChildren[i].removeOnLayoutChangeListener(mChildrenLayoutChangeListener);
}
removeAllViewsInLayout();
mAllChildrenCount = 0;
}
@Override
public void updateClippingRect() {
if (!mRemoveClippedSubviews) {
return;
}
Assertions.assertNotNull(mClippingRect);
Assertions.assertNotNull(mAllChildren);
ReactClippingViewGroupHelper.calculateClippingRect(this, mClippingRect);
updateClippingToRect(mClippingRect);
}
/*package*/ void addViewWithSubviewClippingEnabled(View child, int index, LayoutParams params) {
Assertions.assertCondition(mRemoveClippedSubviews);
Assertions.assertNotNull(mClippingRect);
Assertions.assertNotNull(mAllChildren);
addInArray(child, index);
// we add view as "clipped" and then run {@link #updateSubviewClipStatus} to conditionally
// attach it
int clippedSoFar = 0;
for (int i = 0; i < index; i++) {
if (mAllChildren[i].getParent() == null) {
clippedSoFar++;
}
}
updateSubviewClipStatus(mClippingRect, index, clippedSoFar);
child.addOnLayoutChangeListener(mChildrenLayoutChangeListener);
}
private ReactBridge initializeBridge(
JavaScriptExecutor jsExecutor, JavaScriptModulesConfig jsModulesConfig) {
mReactQueueConfiguration.getJSQueueThread().assertIsOnThread();
Assertions.assertCondition(mBridge == null, "initializeBridge should be called once");
Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "ReactBridgeCtor");
ReactBridge bridge;
try {
bridge =
new ReactBridge(
jsExecutor,
new NativeModulesReactCallback(),
mReactQueueConfiguration.getNativeModulesQueueThread());
mMainExecutorToken = bridge.getMainExecutorToken();
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "setBatchedBridgeConfig");
try {
bridge.setGlobalVariable(
"__fbBatchedBridgeConfig",
buildModulesConfigJSONProperty(mJavaRegistry, jsModulesConfig));
bridge.setGlobalVariable(
"__RCTProfileIsProfiling",
Systrace.isTracing(Systrace.TRACE_TAG_REACT_APPS) ? "true" : "false");
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
mJavaRegistry.notifyReactBridgeInitialized(bridge);
return bridge;
}
@Override
public void run() {
Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "DispatchEventsRunnable");
try {
Systrace.endAsyncFlow(
Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
"ScheduleDispatchFrameCallback",
mHasDispatchScheduledCount);
mHasDispatchScheduled = false;
mHasDispatchScheduledCount++;
Assertions.assertNotNull(mRCTEventEmitter);
synchronized (mEventsToDispatchLock) {
// We avoid allocating an array and iterator, and "sorting" if we don't need to.
// This occurs when the size of mEventsToDispatch is zero or one.
if (mEventsToDispatchSize > 1) {
Arrays.sort(mEventsToDispatch, 0, mEventsToDispatchSize, EVENT_COMPARATOR);
}
for (int eventIdx = 0; eventIdx < mEventsToDispatchSize; eventIdx++) {
Event event = mEventsToDispatch[eventIdx];
// Event can be null if it has been coalesced into another event.
if (event == null) {
continue;
}
Systrace.endAsyncFlow(
Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, event.getEventName(), event.getUniqueID());
event.dispatch(mRCTEventEmitter);
event.dispose();
}
clearEventsToDispatch();
mEventCookieToLastEventIdx.clear();
}
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
}
@Override
public void onTraceStopped() {
getJSModule(
Assertions.assertNotNull(mMainExecutorToken),
com.facebook.react.bridge.Systrace.class)
.setEnabled(false);
}
/**
* Destroys this catalyst instance, waiting for any other threads in CatalystQueueConfiguration
* (besides the UI thread) to finish running. Must be called from the UI thread so that we can
* fully shut down other threads.
*/
/* package */ void destroy() {
UiThreadUtil.assertOnUiThread();
if (mDestroyed) {
return;
}
// TODO: tell all APIs to shut down
mDestroyed = true;
mJavaRegistry.notifyCatalystInstanceDestroy();
mCatalystQueueConfiguration.destroy();
boolean wasIdle = (mPendingJSCalls.getAndSet(0) == 0);
if (!wasIdle && !mBridgeIdleListeners.isEmpty()) {
for (NotThreadSafeBridgeIdleDebugListener listener : mBridgeIdleListeners) {
listener.onTransitionToBridgeIdle();
}
}
if (mTraceListener != null) {
Systrace.unregisterListener(mTraceListener);
}
// We can access the Bridge from any thread now because we know either we are on the JS thread
// or the JS thread has finished via CatalystQueueConfiguration#destroy()
Assertions.assertNotNull(mBridge).dispose();
}
private void addInArray(View child, int index) {
View[] children = Assertions.assertNotNull(mAllChildren);
final int count = mAllChildrenCount;
final int size = children.length;
if (index == count) {
if (size == count) {
mAllChildren = new View[size + ARRAY_CAPACITY_INCREMENT];
System.arraycopy(children, 0, mAllChildren, 0, size);
children = mAllChildren;
}
children[mAllChildrenCount++] = child;
} else if (index < count) {
if (size == count) {
mAllChildren = new View[size + ARRAY_CAPACITY_INCREMENT];
System.arraycopy(children, 0, mAllChildren, 0, index);
System.arraycopy(children, index, mAllChildren, index + 1, count - index);
children = mAllChildren;
} else {
System.arraycopy(children, index, children, index + 1, count - index);
}
children[index] = child;
mAllChildrenCount++;
} else {
throw new IndexOutOfBoundsException("index=" + index + " count=" + count);
}
}
private void enqueueOnChangeEndpointLongPolling() {
Request request = new Request.Builder().url(createOnChangeEndpointUrl()).tag(this).build();
Assertions.assertNotNull(mOnChangePollingClient)
.newCall(request)
.enqueue(
new Callback() {
@Override
public void onFailure(Request request, IOException e) {
if (mOnChangePollingEnabled) {
// this runnable is used by onchange endpoint poller to delay subsequent requests
// in case
// of a failure, so that we don't flood network queue with frequent requests in
// case when
// dev server is down
FLog.d(ReactConstants.TAG, "Error while requesting /onchange endpoint", e);
mRestartOnChangePollingHandler.postDelayed(
new Runnable() {
@Override
public void run() {
handleOnChangePollingResponse(false);
}
},
LONG_POLL_FAILURE_DELAY_MS);
}
}
@Override
public void onResponse(Response response) throws IOException {
handleOnChangePollingResponse(response.code() == 205);
}
});
}
public void runJSBundle() {
Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CatalystInstance_runJSBundle");
try {
final CountDownLatch initLatch = new CountDownLatch(1);
mCatalystQueueConfiguration
.getJSQueueThread()
.runOnQueue(
new Runnable() {
@Override
public void run() {
Assertions.assertCondition(!mJSBundleHasLoaded, "JS bundle was already loaded!");
mJSBundleHasLoaded = true;
incrementPendingJSCalls();
mJSBundleLoader.loadScript(mBridge);
initLatch.countDown();
}
});
Assertions.assertCondition(
initLatch.await(LOAD_JS_BUNDLE_TIMEOUT_MS, TimeUnit.MILLISECONDS),
"Timed out loading JS!");
} catch (InterruptedException e) {
throw new RuntimeException(e);
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
}
/**
* Recreate the react application and context. This should be called if configuration has changed
* or the developer has requested the app to be reloaded. It should only be called after an
* initial call to createReactContextInBackground.
*
* <p>Called from UI thread.
*/
public void recreateReactContextInBackground() {
Assertions.assertCondition(
mHasStartedCreatingInitialContext,
"recreateReactContextInBackground should only be called after the initial "
+ "createReactContextInBackground call.");
recreateReactContextInBackgroundInner();
}
/*package*/ void removeViewWithSubviewClippingEnabled(View view) {
Assertions.assertCondition(mRemoveClippedSubviews);
Assertions.assertNotNull(mClippingRect);
Assertions.assertNotNull(mAllChildren);
view.removeOnLayoutChangeListener(mChildrenLayoutChangeListener);
int index = indexOfChildInAllChildren(view);
if (mAllChildren[index].getParent() != null) {
int clippedSoFar = 0;
for (int i = 0; i < index; i++) {
if (mAllChildren[i].getParent() == null) {
clippedSoFar++;
}
}
super.removeViewsInLayout(index - clippedSoFar, 1);
}
removeFromArray(index);
}
/** Initialize all the native modules */
@VisibleForTesting
public void initialize() {
UiThreadUtil.assertOnUiThread();
Assertions.assertCondition(
!mInitialized, "This catalyst instance has already been initialized");
mInitialized = true;
mJavaRegistry.notifyCatalystInstanceInitialized();
}
public T get() throws Exception {
if (mException != null) {
throw mException;
}
Assertions.assertNotNull(mResult);
return mResult;
}
public void loadApp(
String appKey,
ReactInstanceSpecForTest spec,
@Nullable Bundle initialProps,
String bundleName,
boolean useDevSupport) {
final CountDownLatch currentLayoutEvent = mLayoutEvent = new CountDownLatch(1);
mBridgeIdleSignaler = new ReactBridgeIdleSignaler();
ReactInstanceManager.Builder builder =
ReactTestHelper.getReactTestFactory()
.getReactInstanceManagerBuilder()
.setApplication(getApplication())
.setBundleAssetName(bundleName)
// By not setting a JS module name, we force the bundle to be always loaded from
// assets, not the devserver, even if dev mode is enabled (such as when testing
// redboxes).
// This makes sense because we never run the devserver in tests.
// .setJSMainModuleName()
.addPackage(
spec.getAlternativeReactPackageForTest() != null
? spec.getAlternativeReactPackageForTest()
: new MainReactPackage())
.addPackage(new InstanceSpecForTestPackage(spec))
.setUseDeveloperSupport(useDevSupport)
.setBridgeIdleDebugListener(mBridgeIdleSignaler)
.setInitialLifecycleState(mLifecycleState);
mReactInstanceManager = builder.build();
mReactInstanceManager.onResume(this, this);
Assertions.assertNotNull(mReactRootView)
.getViewTreeObserver()
.addOnGlobalLayoutListener(
new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
currentLayoutEvent.countDown();
}
});
Assertions.assertNotNull(mReactRootView)
.startReactApplication(mReactInstanceManager, appKey, initialProps);
}
private int indexOfChildInAllChildren(View child) {
final int count = mAllChildrenCount;
final View[] children = Assertions.assertNotNull(mAllChildren);
for (int i = 0; i < count; i++) {
if (children[i] == child) {
return i;
}
}
return -1;
}
/**
* @return Themed React context for view with a given {@param reactTag} - in the case of root view
* it returns the context from {@link #mRootViewsContext} and all the other cases it gets the
* context directly from the view using {@link View#getContext}.
*/
private ThemedReactContext getReactContextForView(int reactTag) {
if (mRootTags.get(reactTag)) {
return Assertions.assertNotNull(mRootViewsContext.get(reactTag));
}
View view = mTagsToViews.get(reactTag);
if (view == null) {
throw new JSApplicationIllegalArgumentException("Could not find view with tag " + reactTag);
}
return (ThemedReactContext) view.getContext();
}
private void updateClippingToRect(Rect clippingRect) {
Assertions.assertNotNull(mAllChildren);
int clippedSoFar = 0;
for (int i = 0; i < mAllChildrenCount; i++) {
updateSubviewClipStatus(clippingRect, i, clippedSoFar);
if (mAllChildren[i].getParent() == null) {
clippedSoFar++;
}
}
}
@Override
protected Result<ReactApplicationContext> doInBackground(ReactContextInitParams... params) {
Assertions.assertCondition(params != null && params.length > 0 && params[0] != null);
try {
JavaScriptExecutor jsExecutor = params[0].getJsExecutorFactory().create();
return Result.of(createReactContext(jsExecutor, params[0].getJsBundleLoader()));
} catch (Exception e) {
// Pass exception to onPostExecute() so it can be handled on the main thread
return Result.of(e);
}
}
private void setupReactContext(ReactApplicationContext reactContext) {
UiThreadUtil.assertOnUiThread();
Assertions.assertCondition(mCurrentReactContext == null);
mCurrentReactContext = Assertions.assertNotNull(reactContext);
CatalystInstance catalystInstance =
Assertions.assertNotNull(reactContext.getCatalystInstance());
catalystInstance.initialize();
mDevSupportManager.onNewReactContextCreated(reactContext);
mMemoryPressureRouter.onNewReactContextCreated(reactContext);
moveReactContextToCurrentLifecycleState(reactContext);
for (ReactRootView rootView : mAttachedRootViews) {
attachMeasuredRootViewToInstance(rootView, catalystInstance);
}
for (ReactInstanceEventListener listener : mReactInstanceEventListeners) {
listener.onReactContextInitialized(reactContext);
}
}
/**
* Trigger react context initialization asynchronously in a background async task. This enables
* applications to pre-load the application JS, and execute global code before {@link
* ReactRootView} is available and measured. This should only be called the first time the
* application is set up, which is enforced to keep developers from accidentally creating their
* application multiple times without realizing it.
*
* <p>Called from UI thread.
*/
@Override
public void createReactContextInBackground() {
Assertions.assertCondition(
!mHasStartedCreatingInitialContext,
"createReactContextInBackground should only be called when creating the react "
+ "application for the first time. When reloading JS, e.g. from a new file, explicitly"
+ "use recreateReactContextInBackground");
mHasStartedCreatingInitialContext = true;
recreateReactContextInBackgroundInner();
}
// This method also sets the child's mParent to null
private void removeFromArray(int index) {
final View[] children = Assertions.assertNotNull(mAllChildren);
final int count = mAllChildrenCount;
if (index == count - 1) {
children[--mAllChildrenCount] = null;
} else if (index >= 0 && index < count) {
System.arraycopy(children, index + 1, children, index, count - index - 1);
children[--mAllChildrenCount] = null;
} else {
throw new IndexOutOfBoundsException();
}
}
private void decrementPendingJSCalls() {
int newPendingCalls = mPendingJSCalls.decrementAndGet();
Assertions.assertCondition(newPendingCalls >= 0);
boolean isNowIdle = newPendingCalls == 0;
Systrace.traceCounter(
Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, mJsPendingCallsTitleForTrace, newPendingCalls);
if (isNowIdle && !mBridgeIdleListeners.isEmpty()) {
for (NotThreadSafeBridgeIdleDebugListener listener : mBridgeIdleListeners) {
listener.onTransitionToBridgeIdle();
}
}
}
private void initializeBridge(
JavaScriptExecutor jsExecutor, JavaScriptModulesConfig jsModulesConfig) {
mCatalystQueueConfiguration.getJSQueueThread().assertIsOnThread();
Assertions.assertCondition(mBridge == null, "initializeBridge should be called once");
mBridge =
new ReactBridge(
jsExecutor,
new NativeModulesReactCallback(),
mCatalystQueueConfiguration.getNativeModulesQueueThread());
mBridge.setGlobalVariable(
"__fbBatchedBridgeConfig", buildModulesConfigJSONProperty(mJavaRegistry, jsModulesConfig));
}
/**
* This method will give JS the opportunity to consume the back button event. If JS does not
* consume the event, mDefaultBackButtonImpl will be invoked at the end of the round trip to JS.
*/
@Override
public void onBackPressed() {
UiThreadUtil.assertOnUiThread();
ReactContext reactContext = mCurrentReactContext;
if (mCurrentReactContext == null) {
// Invoke without round trip to JS.
FLog.w(ReactConstants.TAG, "Instance detached from instance manager");
invokeDefaultOnBackPressed();
} else {
DeviceEventManagerModule deviceEventManagerModule =
Assertions.assertNotNull(reactContext).getNativeModule(DeviceEventManagerModule.class);
deviceEventManagerModule.emitHardwareBackPressed();
}
}