From 5116a4da25bc5cbf40d841f3076e4e33a17e2519 Mon Sep 17 00:00:00 2001
From: Chris Banes <chrisbanes@google.com>
Date: Wed, 30 Nov 2016 04:05:43 +0000
Subject: [PATCH] Merge "Fix TextInputLayout not clearing the error on
 Lollipop" into mnc-ub-dev am: 8bab339 am: ac23e76

* commit 'ac23e764c991f2e72cd1b4c54a7ffa72024e94d7':
  Fix TextInputLayout not clearing the error on Lollipop

Change-Id: I676fdb29773258ba84a0cb6a9cdd6fe029d2ec2f

GitOrigin-RevId=d374743e9db623153997cf59efc9658c678d08bf

PiperOrigin-RevId: 140560912
---
 .../design/widget/TextInputLayout.java        | 29 ++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/android/support/design/widget/TextInputLayout.java b/src/android/support/design/widget/TextInputLayout.java
index bd3f98746..999d5d000 100644
--- a/src/android/support/design/widget/TextInputLayout.java
+++ b/src/android/support/design/widget/TextInputLayout.java
@@ -25,6 +25,7 @@ import android.graphics.PorterDuff;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.DrawableContainer;
+import android.graphics.drawable.InsetDrawable;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -33,6 +34,7 @@ import android.support.annotation.Nullable;
 import android.support.annotation.StyleRes;
 import android.support.design.R;
 import android.support.v4.content.ContextCompat;
+import android.support.v4.graphics.drawable.DrawableWrapper;
 import android.support.v4.view.AccessibilityDelegateCompat;
 import android.support.v4.view.GravityCompat;
 import android.support.v4.view.ViewCompat;
@@ -721,11 +723,36 @@ public class TextInputLayout extends LinearLayout {
         } else {
             // Else reset the color filter and refresh the drawable state so that the
             // normal tint is used
-            editTextBackground.clearColorFilter();
+            clearColorFilter(editTextBackground);
             mEditText.refreshDrawableState();
         }
     }
 
+    private static void clearColorFilter(@NonNull Drawable drawable) {
+        drawable.clearColorFilter();
+
+        if (Build.VERSION.SDK_INT == 21 || Build.VERSION.SDK_INT == 22) {
+            // API 21 + 22 have an issue where clearing a color filter on a DrawableContainer
+            // will not propagate to all of its children. To workaround this we unwrap the drawable
+            // to find any DrawableContainers, and then unwrap those to clear the filter on its
+            // children manually
+            if (drawable instanceof InsetDrawable) {
+                clearColorFilter(((InsetDrawable) drawable).getDrawable());
+            } else if (drawable instanceof DrawableWrapper) {
+                clearColorFilter(((DrawableWrapper) drawable).getWrappedDrawable());
+            } else if (drawable instanceof DrawableContainer) {
+                final DrawableContainer container = (DrawableContainer) drawable;
+                final DrawableContainer.DrawableContainerState state =
+                        (DrawableContainer.DrawableContainerState) container.getConstantState();
+                if (state != null) {
+                    for (int i = 0, count = state.getChildCount(); i < count; i++) {
+                        clearColorFilter(state.getChild(i));
+                    }
+                }
+            }
+        }
+    }
+
     private void ensureBackgroundDrawableStateWorkaround() {
         final int sdk = Build.VERSION.SDK_INT;
         if (sdk != 21 && sdk != 22) {