Add debug logs to folder open anim

Bug: 383526431
Flag: EXEMPT logs only
Test: None
Change-Id: Ib18d63e7f8ab194f8fda74aa99d99c9aa27f5f19
diff --git a/src/com/android/launcher3/folder/Folder.java b/src/com/android/launcher3/folder/Folder.java
index 42556ca..b76e098 100644
--- a/src/com/android/launcher3/folder/Folder.java
+++ b/src/com/android/launcher3/folder/Folder.java
@@ -697,15 +697,23 @@
             }
         }
 
+        Log.d("b/383526431", "animateOpen: content child count before: "
+                + mContent.getTotalChildCount());
+
         mContent.completePendingPageChanges();
         mContent.setCurrentPage(pageNo);
 
+        Log.d("b/383526431", "animateOpen: content child count after pending page"
+                + " changes: " + mContent.getTotalChildCount());
+
         // This is set to true in close(), but isn't reset to false until onDropCompleted(). This
         // leads to an inconsistent state if you drag out of the folder and drag back in without
         // dropping. One resulting issue is that replaceFolderWithFinalItem() can be called twice.
         mDeleteFolderOnDropCompleted = false;
 
         cancelRunningAnimations();
+        Log.d("b/383526431", "animateOpen: content child count after cancelling"
+                + " animation: " + mContent.getTotalChildCount());
         FolderAnimationManager fam = new FolderAnimationManager(this, true /* isOpening */);
         AnimatorSet anim = fam.getAnimator();
         anim.addListener(new AnimatorListenerAdapter() {
diff --git a/src/com/android/launcher3/folder/FolderGridOrganizer.java b/src/com/android/launcher3/folder/FolderGridOrganizer.java
index a7ab7b9..06286d6 100644
--- a/src/com/android/launcher3/folder/FolderGridOrganizer.java
+++ b/src/com/android/launcher3/folder/FolderGridOrganizer.java
@@ -19,6 +19,7 @@
 import static com.android.launcher3.folder.ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
 
 import android.graphics.Point;
+import android.util.Log;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.model.data.FolderInfo;
@@ -178,6 +179,14 @@
                 break;
             }
         }
+
+        if (result.isEmpty()) {
+            // Log specifics since we are getting empty result
+            Log.d("b/383526431", "previewItemsForPage: "
+                    + "mCountX = " + mCountX
+                    + ", mCountY = " + mCountY
+                    + ", content size = " + contents.size());
+        }
         return result;
     }
 
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 22f1164..bebe1a4 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -58,6 +58,7 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.ToIntFunction;
 import java.util.stream.Collectors;
 
@@ -531,6 +532,16 @@
         verifyVisibleHighResIcons(getCurrentPage() + 1);
     }
 
+    int getTotalChildCount() {
+        AtomicInteger count = new AtomicInteger();
+        iterateOverItems((i, v) -> {
+            count.getAndIncrement();
+            return false;
+        });
+
+        return count.get();
+    }
+
     /**
      * Ensures that all the icons on the given page are of high-res
      */