Merge "Transfer IME callbacks when app's focused root view changes." into... (6e0079c4) · Commits · e / os / android_frameworks_base

core/java/android/view/inputmethod/InputMethodManager.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -782,6 +782,7 @@ public final class InputMethodManager {
		@Override
		public void setCurrentRootView(ViewRootImpl rootView) {
		synchronized (mH) {
		mImeDispatcher.switchRootView(mCurRootView, rootView);
		mCurRootView = rootView;
		}
		}

core/java/android/window/ImeOnBackInvokedDispatcher.java

+51 −9

Original line number	Diff line number	Diff line
		@@ -25,8 +25,9 @@ import android.os.Parcelable;
		import android.os.RemoteException;
		import android.os.ResultReceiver;
		import android.util.Log;
		import android.view.ViewRootImpl;

		import java.util.HashMap;
		import java.util.ArrayList;

		/**
		* A {@link OnBackInvokedDispatcher} for IME that forwards {@link OnBackInvokedCallback}
		@@ -117,7 +118,7 @@ public class ImeOnBackInvokedDispatcher implements OnBackInvokedDispatcher, Parc
		}
		};

		private final HashMap<Integer, OnBackInvokedCallback> mImeCallbackMap = new HashMap<>();
		private final ArrayList<ImeOnBackInvokedCallback> mImeCallbacks = new ArrayList<>();

		private void receive(
		int resultCode, Bundle resultData,
		@@ -140,39 +141,55 @@ public class ImeOnBackInvokedDispatcher implements OnBackInvokedDispatcher, Parc
		int callbackId,
		@NonNull OnBackInvokedDispatcher receivingDispatcher) {
		final ImeOnBackInvokedCallback imeCallback =
		new ImeOnBackInvokedCallback(iCallback);
		mImeCallbackMap.put(callbackId, imeCallback);
		new ImeOnBackInvokedCallback(iCallback, callbackId, priority);
		mImeCallbacks.add(imeCallback);
		receivingDispatcher.registerOnBackInvokedCallback(priority, imeCallback);
		}

		private void unregisterReceivedCallback(
		int callbackId, OnBackInvokedDispatcher receivingDispatcher) {
		final OnBackInvokedCallback callback = mImeCallbackMap.get(callbackId);
		ImeOnBackInvokedCallback callback = null;
		for (ImeOnBackInvokedCallback imeCallback : mImeCallbacks) {
		if (imeCallback.getId() == callbackId) {
		callback = imeCallback;
		break;
		}
		}
		if (callback == null) {
		Log.e(TAG, "Ime callback not found. Ignoring unregisterReceivedCallback. "
		+ "callbackId: " + callbackId);
		return;
		}
		receivingDispatcher.unregisterOnBackInvokedCallback(callback);
		mImeCallbacks.remove(callback);
		}

		/** Clears all registered callbacks on the instance. */
		public void clear() {
		// Unregister previously registered callbacks if there's any.
		if (getReceivingDispatcher() != null) {
		for (OnBackInvokedCallback callback : mImeCallbackMap.values()) {
		for (ImeOnBackInvokedCallback callback : mImeCallbacks) {
		getReceivingDispatcher().unregisterOnBackInvokedCallback(callback);
		}
		}
		mImeCallbackMap.clear();
		mImeCallbacks.clear();
		}

		static class ImeOnBackInvokedCallback implements OnBackInvokedCallback {
		@NonNull
		private final IOnBackInvokedCallback mIOnBackInvokedCallback;
		/**
		* The hashcode of the callback instance in the IME process, used as a unique id to
		* identify the callback when it's passed between processes.
		*/
		private final int mId;
		private final int mPriority;

		ImeOnBackInvokedCallback(@NonNull IOnBackInvokedCallback iCallback) {
		ImeOnBackInvokedCallback(@NonNull IOnBackInvokedCallback iCallback, int id,
		@Priority int priority) {
		mIOnBackInvokedCallback = iCallback;
		mId = id;
		mPriority = priority;
		}

		@Override
		@@ -186,8 +203,33 @@ public class ImeOnBackInvokedDispatcher implements OnBackInvokedDispatcher, Parc
		}
		}

		private int getId() {
		return mId;
		}

		IOnBackInvokedCallback getIOnBackInvokedCallback() {
		return mIOnBackInvokedCallback;
		}
		}

		/**
		* Transfers {@link ImeOnBackInvokedCallback}s registered on one {@link ViewRootImpl} to
		* another {@link ViewRootImpl} on focus change.
		*
		* @param previous the previously focused {@link ViewRootImpl}.
		* @param current the currently focused {@link ViewRootImpl}.
		*/
		// TODO(b/232845902): Add CTS to test IME back behavior when there's root view change while
		// IME is up.
		public void switchRootView(ViewRootImpl previous, ViewRootImpl current) {
		for (ImeOnBackInvokedCallback imeCallback : mImeCallbacks) {
		if (previous != null) {
		previous.getOnBackInvokedDispatcher().unregisterOnBackInvokedCallback(imeCallback);
		}
		if (current != null) {
		current.getOnBackInvokedDispatcher().registerOnBackInvokedCallback(
		imeCallback.mPriority, imeCallback);
		}
		}
		}
		}

core/java/android/window/WindowOnBackInvokedDispatcher.java

+4 −3

Original line number	Diff line number	Diff line
		@@ -157,15 +157,16 @@ public class WindowOnBackInvokedDispatcher implements OnBackInvokedDispatcher {

		/** Clears all registered callbacks on the instance. */
		public void clear() {
		if (mImeDispatcher != null) {
		mImeDispatcher.clear();
		mImeDispatcher = null;
		}
		if (!mAllCallbacks.isEmpty()) {
		// Clear binder references in WM.
		setTopOnBackInvokedCallback(null);
		}
		mAllCallbacks.clear();
		mOnBackInvokedCallbacks.clear();
		if (mImeDispatcher != null) {
		mImeDispatcher = null;
		}
		}

		private void setTopOnBackInvokedCallback(@Nullable OnBackInvokedCallback callback) {