Reduce DPAD navigation logspam with killable IME

On Android TV, when the killable IME feature is enabled, navigating
through the interface using the DPAD buttons on a remote controller
leads to logspam on logcat. This CL takes the feature into account
and lowers the severity of the log message about the input event
not being delivered to the IME when appropriate.

Bug: 258201658
Test: manually on a tv device
Change-Id: I04b85aaf13e1442f070d8dfcff7cf9bd599dac0a

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

@@ -632,6 +632,8 @@ public final class InputMethodManager {
 
     private final DelegateImpl mDelegate = new DelegateImpl();
 
+    private static boolean sPreventImeStartupUnlessTextEditor;
+
     // -----------------------------------------------------------
 
     private static final int MSG_DUMP = 1;
@@ -1435,6 +1437,10 @@ public final class InputMethodManager {
         // display case.
         final Looper looper = displayId == Display.DEFAULT_DISPLAY
                 ? Looper.getMainLooper() : context.getMainLooper();
+        // Keep track of whether to expect the IME to be unavailable so as to avoid log spam in
+        // sendInputEventOnMainLooperLocked() by not logging a verbose message on every DPAD event
+        sPreventImeStartupUnlessTextEditor = context.getResources().getBoolean(
+                com.android.internal.R.bool.config_preventImeStartupUnlessTextEditor);
         return forContextInternal(displayId, looper);
     }
 
@@ -3360,8 +3366,12 @@ public final class InputMethodManager {
                 return DISPATCH_IN_PROGRESS;
             }
 
-            Log.w(TAG, "Unable to send input event to IME: " + getImeIdLocked()
-                    + " dropping: " + event);
+            if (sPreventImeStartupUnlessTextEditor) {
+                Log.d(TAG, "Dropping event because IME is evicted: " + event);
+            } else {
+                Log.w(TAG, "Unable to send input event to IME: " + getImeIdLocked()
+                        + " dropping: " + event);
+            }
         }
         return DISPATCH_NOT_HANDLED;
     }