Handle IME selection focus for ENABLE_DEVICE_SEARCH

Bug: 162861289
Change-Id: I15e4eae09be2aa9f89a5157fd74c95e91e64bc53

src/com/android/launcher3/allapps/AlphabeticalAppsList.java

@@ -223,6 +223,25 @@ public class AlphabeticalAppsList implements AllAppsStore.OnUpdateListener {
         return mAdapterItems;
     }
 
+    /**
+     * Returns the child adapter item with IME launch focus.
+     */
+    public AdapterItem getFocusedChild() {
+        return mAdapterItems.get(getFocusedChildIndex());
+    }
+
+    /**
+     * Returns the index of the child with IME launch focus.
+     */
+    public int getFocusedChildIndex() {
+        for (AdapterItem item : mAdapterItems) {
+            if (item.isCountedForAccessibility()) {
+                return mAdapterItems.indexOf(item);
+            }
+        }
+        return -1;
+    }
+
     /**
      * Returns the number of rows of applications
      */