private void recreateReactContextInBackgroundInner() {
UiThreadUtil.assertOnUiThread();
if (mUseDeveloperSupport && mJSMainModuleName != null) {
if (mDevSupportManager.hasUpToDateJSBundleInCache()) {
// If there is a up-to-date bundle downloaded from server, always use that
onJSBundleLoadedFromServer();
} else if (mJSBundleFile == null) {
mDevSupportManager.handleReloadJS();
} else {
mDevSupportManager.isPackagerRunning(
new DevServerHelper.PackagerStatusCallback() {
@Override
public void onPackagerStatusFetched(final boolean packagerIsRunning) {
UiThreadUtil.runOnUiThread(
new Runnable() {
@Override
public void run() {
if (packagerIsRunning) {
mDevSupportManager.handleReloadJS();
} else {
recreateReactContextInBackgroundFromBundleFile();
}
}
});
}
});
}
return;
}
recreateReactContextInBackgroundFromBundleFile();
}
@Override
public void doFrame(long frameTimeNanos) {
UiThreadUtil.assertOnUiThread();
if (mShouldStop) {
mIsPosted = false;
} else {
post();
}
Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "ScheduleDispatchFrameCallback");
try {
moveStagedEventsToDispatchQueue();
if (mEventsToDispatchSize > 0 && !mHasDispatchScheduled) {
mHasDispatchScheduled = true;
Systrace.startAsyncFlow(
Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
"ScheduleDispatchFrameCallback",
mHasDispatchScheduledCount);
mReactContext.runOnJSQueueThread(mDispatchEventsRunnable);
}
} finally {
Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
}
}
@Override
public void onHostResume() {
UiThreadUtil.assertOnUiThread();
if (mRCTEventEmitter == null) {
mRCTEventEmitter = mReactContext.getJSModule(RCTEventEmitter.class);
}
mCurrentFrameCallback.maybePost();
}
/**
* Detach given {@param rootView} from current catalyst instance. It's safe to call this method
* multiple times on the same {@param rootView} - in that case view will be detached with the
* first call.
*/
@Override
public void detachRootView(ReactRootView rootView) {
UiThreadUtil.assertOnUiThread();
if (mAttachedRootViews.remove(rootView)) {
if (mCurrentReactContext != null && mCurrentReactContext.hasActiveCatalystInstance()) {
detachViewFromInstance(rootView, mCurrentReactContext.getCatalystInstance());
}
}
}
public void removeRootView(int rootViewTag) {
UiThreadUtil.assertOnUiThread();
if (!mRootTags.get(rootViewTag)) {
SoftAssertions.assertUnreachable(
"View with tag " + rootViewTag + " is not registered as a root view");
}
View rootView = mTagsToViews.get(rootViewTag);
dropView(rootView);
mRootTags.delete(rootViewTag);
mRootViewsContext.remove(rootViewTag);
}
/**
* Attach given {@param rootView} to a catalyst instance manager and start JS application using JS
* module provided by {@link ReactRootView#getJSModuleName}. If the react context is currently
* being (re)-created, or if react context has not been created yet, the JS application associated
* with the provided root view will be started asynchronously, i.e this method won't block. This
* view will then be tracked by this manager and in case of catalyst instance restart it will be
* re-attached.
*/
@Override
public void attachMeasuredRootView(ReactRootView rootView) {
UiThreadUtil.assertOnUiThread();
mAttachedRootViews.add(rootView);
// If react context is being created in the background, JS application will be started
// automatically when creation completes, as root view is part of the attached root view list.
if (mReactContextInitAsyncTask == null && mCurrentReactContext != null) {
attachMeasuredRootViewToInstance(rootView, mCurrentReactContext.getCatalystInstance());
}
}
/**
* Returns true on success, false on failure. If successful, after calling, output buffer will be
* {x, y, width, height}.
*/
public void measure(int tag, int[] outputBuffer) {
UiThreadUtil.assertOnUiThread();
View v = mTagsToViews.get(tag);
if (v == null) {
throw new NoSuchNativeViewException("No native view for " + tag + " currently exists");
}
// Puts x/y in outputBuffer[0]/[1]
v.getLocationOnScreen(outputBuffer);
outputBuffer[2] = v.getWidth();
outputBuffer[3] = v.getHeight();
}
private void tearDownReactContext(ReactContext reactContext) {
UiThreadUtil.assertOnUiThread();
if (mLifecycleState == LifecycleState.RESUMED) {
reactContext.onPause();
}
for (ReactRootView rootView : mAttachedRootViews) {
detachViewFromInstance(rootView, reactContext.getCatalystInstance());
}
reactContext.onDestroy();
mDevSupportManager.onReactInstanceDestroyed(reactContext);
mMemoryPressureRouter.onReactInstanceDestroyed();
}
/**
* 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();
}
}
public void updateViewExtraData(int tag, Object extraData) {
UiThreadUtil.assertOnUiThread();
ViewManager viewManager = mTagsToViewManagers.get(tag);
if (viewManager == null) {
throw new IllegalViewOperationException("ViewManager for tag " + tag + " could not be found");
}
View viewToUpdate = mTagsToViews.get(tag);
if (viewToUpdate == null) {
throw new IllegalViewOperationException(
"Trying to update view with tag " + tag + " which " + "doesn't exist");
}
viewManager.updateExtraData(viewToUpdate, extraData);
}
public void updateProperties(int tag, CatalystStylesDiffMap props) {
UiThreadUtil.assertOnUiThread();
ViewManager viewManager = mTagsToViewManagers.get(tag);
if (viewManager == null) {
throw new IllegalViewOperationException("ViewManager for tag " + tag + " could not be found");
}
View viewToUpdate = mTagsToViews.get(tag);
if (viewToUpdate == null) {
throw new IllegalViewOperationException(
"Trying to update view with tag " + tag + " which doesn't exist");
}
viewManager.updateProperties(viewToUpdate, props);
}
/**
* See {@link UIManagerModule#addMeasuredRootView}.
*
* <p>Must be called from the UI thread.
*/
public void addRootView(
int tag, SizeMonitoringFrameLayout view, ThemedReactContext themedContext) {
UiThreadUtil.assertOnUiThread();
if (view.getId() != View.NO_ID) {
throw new IllegalViewOperationException(
"Trying to add a root view with an explicit id already set. React Native uses "
+ "the id field to track react tags and will overwrite this field. If that is fine, "
+ "explicitly overwrite the id field to View.NO_ID before calling addMeasuredRootView.");
}
mTagsToViews.put(tag, view);
mTagsToViewManagers.put(tag, mRootViewManager);
mRootTags.put(tag, true);
mRootViewsContext.put(tag, themedContext);
view.setId(tag);
}
private void recreateReactContextInBackground(
JavaScriptExecutor.Factory jsExecutorFactory, JSBundleLoader jsBundleLoader) {
UiThreadUtil.assertOnUiThread();
ReactContextInitParams initParams =
new ReactContextInitParams(jsExecutorFactory, jsBundleLoader);
if (mReactContextInitAsyncTask == null) {
// No background task to create react context is currently running, create and execute one.
mReactContextInitAsyncTask = new ReactContextInitAsyncTask();
mReactContextInitAsyncTask.execute(initParams);
} else {
// Background task is currently running, queue up most recent init params to recreate context
// once task completes.
mPendingReactContextInitParams = initParams;
}
}
public void dispatchCommand(int reactTag, int commandId, @Nullable ReadableArray args) {
UiThreadUtil.assertOnUiThread();
View view = mTagsToViews.get(reactTag);
if (view == null) {
throw new IllegalViewOperationException(
"Trying to send command to a non-existing view " + "with tag " + reactTag);
}
ViewManager viewManager = mTagsToViewManagers.get(reactTag);
if (viewManager == null) {
throw new IllegalViewOperationException(
"ViewManager for view tag " + reactTag + " could not be found");
}
viewManager.receiveCommand(view, commandId, args);
}
@Override
public void onPause() {
UiThreadUtil.assertOnUiThread();
mLifecycleState = LifecycleState.BEFORE_RESUME;
mDefaultBackButtonImpl = null;
if (mUseDeveloperSupport) {
mDevSupportManager.setDevSupportEnabled(false);
}
mCurrentActivity = null;
if (mCurrentReactContext != null) {
mCurrentReactContext.onPause();
}
}
/**
* Use this method when the activity resumes to enable invoking the back button directly from JS.
*
* <p>This method retains an instance to provided mDefaultBackButtonImpl. Thus it's important to
* pass from the activity instance that owns this particular instance of {@link
* ReactInstanceManagerImpl}, so that once this instance receive {@link #onDestroy} event it will
* clear the reference to that defaultBackButtonImpl.
*
* @param defaultBackButtonImpl a {@link DefaultHardwareBackBtnHandler} from an Activity that owns
* this instance of {@link ReactInstanceManagerImpl}.
*/
@Override
public void onResume(Activity activity, DefaultHardwareBackBtnHandler defaultBackButtonImpl) {
UiThreadUtil.assertOnUiThread();
mLifecycleState = LifecycleState.RESUMED;
mDefaultBackButtonImpl = defaultBackButtonImpl;
if (mUseDeveloperSupport) {
mDevSupportManager.setDevSupportEnabled(true);
}
mCurrentActivity = activity;
if (mCurrentReactContext != null) {
mCurrentReactContext.onResume(activity);
}
}
public void updateLayout(int parentTag, int tag, int x, int y, int width, int height) {
UiThreadUtil.assertOnUiThread();
View viewToUpdate = mTagsToViews.get(tag);
if (viewToUpdate == null) {
throw new IllegalViewOperationException(
"Trying to update view with tag " + tag + " which " + "doesn't exist");
}
// Even though we have exact dimensions, we still call measure because some platform views (e.g.
// Switch) assume that method will always be called before onLayout and onDraw. They use it to
// calculate and cache information used in the draw pass. For most views, onMeasure can be
// stubbed out to only call setMeasuredDimensions. For ViewGroups, onLayout should be stubbed
// out to not recursively call layout on its children: React Native already handles doing that.
//
// Also, note measure and layout need to be called *after* all View properties have been updated
// because of caching and calculation that may occur in onMeasure and onLayout. Layout
// operations should also follow the native view hierarchy and go top to bottom for consistency
// with standard layout passes (some views may depend on this).
viewToUpdate.measure(
View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(height, View.MeasureSpec.EXACTLY));
// Check if the parent of the view has to layout the view, or the child has to lay itself out.
if (!mRootTags.get(parentTag)) {
ViewManager parentViewManager = mTagsToViewManagers.get(parentTag);
ViewGroupManager parentViewGroupManager;
if (parentViewManager instanceof ViewGroupManager) {
parentViewGroupManager = (ViewGroupManager) parentViewManager;
} else {
throw new IllegalViewOperationException(
"Trying to use view with tag "
+ tag
+ " as a parent, but its Manager doesn't extends ViewGroupManager");
}
if (parentViewGroupManager != null
&& !parentViewGroupManager.needsCustomLayoutForChildren()) {
viewToUpdate.layout(x, y, x + width, y + height);
}
} else {
viewToUpdate.layout(x, y, x + width, y + height);
}
}
/**
* Show a {@link 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 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 success) {
UiThreadUtil.assertOnUiThread();
View anchor = mTagsToViews.get(reactTag);
if (anchor == null) {
throw new JSApplicationIllegalArgumentException("Could not find view with tag " + reactTag);
}
PopupMenu popupMenu = new PopupMenu(getReactContextForView(reactTag), anchor);
Menu menu = popupMenu.getMenu();
for (int i = 0; i < items.size(); i++) {
menu.add(Menu.NONE, Menu.NONE, i, items.getString(i));
}
PopupMenuCallbackHandler handler = new PopupMenuCallbackHandler(success);
popupMenu.setOnMenuItemClickListener(handler);
popupMenu.setOnDismissListener(handler);
popupMenu.show();
}
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);
}
}
private void attachMeasuredRootViewToInstance(
ReactRootView rootView, CatalystInstance catalystInstance) {
UiThreadUtil.assertOnUiThread();
// Reset view content as it's going to be populated by the application content from JS
rootView.removeAllViews();
rootView.setId(View.NO_ID);
UIManagerModule uiManagerModule = catalystInstance.getNativeModule(UIManagerModule.class);
int rootTag = uiManagerModule.addMeasuredRootView(rootView);
@Nullable Bundle launchOptions = rootView.getLaunchOptions();
WritableMap initialProps =
launchOptions != null ? Arguments.fromBundle(launchOptions) : Arguments.createMap();
String jsAppModuleName = rootView.getJSModuleName();
WritableNativeMap appParams = new WritableNativeMap();
appParams.putDouble("rootTag", rootTag);
appParams.putMap("initialProps", initialProps);
catalystInstance.getJSModule(AppRegistry.class).runApplication(jsAppModuleName, appParams);
}
@Override
public void onDestroy() {
UiThreadUtil.assertOnUiThread();
if (mReactContextInitAsyncTask != null) {
mReactContextInitAsyncTask.cancel(true);
}
mMemoryPressureRouter.destroy(mApplicationContext);
if (mUseDeveloperSupport) {
mDevSupportManager.setDevSupportEnabled(false);
}
if (mCurrentReactContext != null) {
mCurrentReactContext.onDestroy();
mCurrentReactContext = null;
mHasStartedCreatingInitialContext = false;
}
mCurrentActivity = null;
}
public void createView(
int rootViewTagForContext,
int tag,
String className,
@Nullable CatalystStylesDiffMap initialProps) {
UiThreadUtil.assertOnUiThread();
ViewManager viewManager = mViewManagers.get(className);
View view =
viewManager.createView(mRootViewsContext.get(rootViewTagForContext), mJSResponderHandler);
mTagsToViews.put(tag, view);
mTagsToViewManagers.put(tag, viewManager);
// Use android View id field to store React tag. This is possible since we don't inflate
// React views from layout xmls. Thus it is easier to just reuse that field instead of
// creating another (potentially much more expensive) mapping from view to React tag
view.setId(tag);
if (initialProps != null) {
viewManager.updateProperties(view, initialProps);
}
}
/** Releases all references to given native View. */
private void dropView(View view) {
UiThreadUtil.assertOnUiThread();
if (!mRootTags.get(view.getId())) {
// For non-root views we notify viewmanager with {@link ViewManager#onDropInstance}
Assertions.assertNotNull(mTagsToViewManagers.get(view.getId()))
.onDropViewInstance((ThemedReactContext) view.getContext(), view);
}
ViewManager viewManager = mTagsToViewManagers.get(view.getId());
if (view instanceof ViewGroup && viewManager instanceof ViewGroupManager) {
ViewGroup viewGroup = (ViewGroup) view;
ViewGroupManager viewGroupManager = (ViewGroupManager) viewManager;
for (int i = viewGroupManager.getChildCount(viewGroup) - 1; i >= 0; i--) {
View child = viewGroupManager.getChildAt(viewGroup, i);
if (mTagsToViews.get(child.getId()) != null) {
dropView(child);
}
}
viewGroupManager.removeAllViews(viewGroup);
}
mTagsToViews.remove(view.getId());
mTagsToViewManagers.remove(view.getId());
}
/* package */ void startAnimationForNativeView(
int reactTag, Animation animation, @Nullable final Callback animationCallback) {
UiThreadUtil.assertOnUiThread();
View view = mTagsToViews.get(reactTag);
final int animationId = animation.getAnimationID();
if (view != null) {
animation.setAnimationListener(
new AnimationListener() {
@Override
public void onFinished() {
Animation removedAnimation = mAnimationRegistry.removeAnimation(animationId);
// There's a chance that there was already a removeAnimation call enqueued on the main
// thread when this callback got enqueued on the main thread, but the Animation class
// should handle only calling one of onFinished and onCancel exactly once.
Assertions.assertNotNull(removedAnimation, "Animation was already removed somehow!");
if (animationCallback != null) {
animationCallback.invoke(true);
}
}
@Override
public void onCancel() {
Animation removedAnimation = mAnimationRegistry.removeAnimation(animationId);
Assertions.assertNotNull(removedAnimation, "Animation was already removed somehow!");
if (animationCallback != null) {
animationCallback.invoke(false);
}
}
});
animation.start(view);
} else {
// TODO(5712813): cleanup callback in JS callbacks table in case of an error
throw new IllegalViewOperationException("View with tag " + reactTag + " not found");
}
}
private void detachViewFromInstance(ReactRootView rootView, CatalystInstance catalystInstance) {
UiThreadUtil.assertOnUiThread();
catalystInstance
.getJSModule(AppRegistry.class)
.unmountApplicationComponentAtRootTag(rootView.getId());
}
private void stopFrameCallback() {
UiThreadUtil.assertOnUiThread();
mCurrentFrameCallback.stop();
}
@Override
public void showDevOptionsDialog() {
UiThreadUtil.assertOnUiThread();
mDevSupportManager.showDevOptionsDialog();
}
private void invokeDefaultOnBackPressed() {
UiThreadUtil.assertOnUiThread();
if (mDefaultBackButtonImpl != null) {
mDefaultBackButtonImpl.invokeDefaultOnBackPressed();
}
}