[automerge] Remove the current input focused window when ANR 2p: 964305e1b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16970763

Bug: 216852742
Change-Id: I54e6ce741cf6e64f972eb023a405b9d1f05bb0e5

core/java/android/view/SurfaceControl.java

@@ -248,6 +248,7 @@ public final class SurfaceControl implements Parcelable {
 
     private static native void nativeSetFixedTransformHint(long transactionObj, long nativeObject,
             int transformHint);
+    private static native void nativeRemoveCurrentInputFocus(long nativeObject, int displayId);
     private static native void nativeSetFocusedWindow(long transactionObj, IBinder toToken,
             String windowName, IBinder focusedToken, String focusedWindowName, int displayId);
     private static native void nativeSetFrameTimelineVsync(long transactionObj,
@@ -3652,6 +3653,17 @@ public final class SurfaceControl implements Parcelable {
             return this;
         }
 
+        /**
+         * Removes the input focus from the current window which is having the input focus. Should
+         * only be called when the current focused app is not responding and the current focused
+         * window is not beloged to the current focused app.
+         * @hide
+         */
+        public Transaction removeCurrentInputFocus(int displayId) {
+            nativeRemoveCurrentInputFocus(mNativeObject, displayId);
+            return this;
+        }
+
         /**
          * Adds or removes the flag SKIP_SCREENSHOT of the surface.  Setting the flag is equivalent
          * to creating the Surface with the {@link #SKIP_SCREENSHOT} flag.

core/jni/android_view_SurfaceControl.cpp

@@ -1833,6 +1833,15 @@ static jlong nativeGetHandle(JNIEnv* env, jclass clazz, jlong nativeObject) {
     return reinterpret_cast<jlong>(surfaceControl->getHandle().get());
 }
 
+static void nativeRemoveCurrentInputFocus(JNIEnv* env, jclass clazz, jlong transactionObj,
+                                          jint displayId) {
+    auto transaction = reinterpret_cast<SurfaceComposerClient::Transaction*>(transactionObj);
+    FocusRequest request;
+    request.timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
+    request.displayId = displayId;
+    transaction->setFocusedWindow(request);
+}
+
 static void nativeSetFocusedWindow(JNIEnv* env, jclass clazz, jlong transactionObj,
                                    jobject toTokenObj, jstring windowNameJstr,
                                    jobject focusedTokenObj, jstring focusedWindowNameJstr,
@@ -2167,6 +2176,8 @@ static const JNINativeMethod sSurfaceControlMethods[] = {
             (void*)nativeSetFixedTransformHint},
     {"nativeSetFocusedWindow", "(JLandroid/os/IBinder;Ljava/lang/String;Landroid/os/IBinder;Ljava/lang/String;I)V",
             (void*)nativeSetFocusedWindow},
+    {"nativeRemoveCurrentInputFocus", "(JI)V",
+            (void*)nativeRemoveCurrentInputFocus},
     {"nativeSetFrameTimelineVsync", "(JJ)V",
             (void*)nativeSetFrameTimelineVsync },
     {"nativeAddJankDataListener", "(JJ)V",

data/etc/services.core.protolog.json

@@ -3793,6 +3793,12 @@
       "group": "WM_DEBUG_REMOTE_ANIMATIONS",
       "at": "com\/android\/server\/wm\/NonAppWindowAnimationAdapter.java"
     },
+    "2001473656": {
+      "message": "App %s is focused, but the window is not ready. Start a transaction to remove focus from the window of non-focused apps.",
+      "level": "VERBOSE",
+      "group": "WM_DEBUG_FOCUS_LIGHT",
+      "at": "com\/android\/server\/wm\/InputMonitor.java"
+    },
     "2018454757": {
       "message": "WS.removeImmediately: %s Already removed...",
       "level": "VERBOSE",

services/core/java/com/android/server/wm/InputMonitor.java

@@ -414,6 +414,17 @@ final class InputMonitor {
         final IBinder focusToken = focus != null ? focus.mInputChannelToken : null;
         if (focusToken == null) {
             mInputFocus = null;
+            // When an app is focused, but its window is not showing yet, remove the input focus
+            // from the current window.
+            if (mDisplayContent.mFocusedApp != null) {
+                ProtoLog.v(WM_DEBUG_FOCUS_LIGHT, "App %s is focused,"
+                        + " but the window is not ready. Start a transaction to remove focus from"
+                        + " the window of non-focused apps.",
+                        mDisplayContent.mFocusedApp.getName());
+                EventLog.writeEvent(LOGTAG_INPUT_FOCUS, "Requesting to set focus to null window",
+                        "reason=UpdateInputWindows");
+                mInputTransaction.removeCurrentInputFocus(mDisplayId);
+            }
             return;
         }