From 61ba09776c6d1e4ae83acc1339a6389d88232fd5 Mon Sep 17 00:00:00 2001
From: tmfang <tmfang@google.com>
Date: Tue, 12 Feb 2019 13:52:53 +0800
Subject: [PATCH] Remove the drop shadow in Privacy screen

Remove shadow in action bar unless page is scrolling.

Test: visual, robotest
Change-Id: I199c659a7a7beecc3b715916b6829a5a879c4c74
Fixes: 123903344
---
 .../privacy/PrivacyDashboardFragment.java     | 34 +++++++++-
 .../privacy/PrivacyDashboardFragmentTest.java | 68 +++++++++++++++++++
 2 files changed, 101 insertions(+), 1 deletion(-)
 create mode 100644 tests/robotests/src/com/android/settings/privacy/PrivacyDashboardFragmentTest.java

diff --git a/src/com/android/settings/privacy/PrivacyDashboardFragment.java b/src/com/android/settings/privacy/PrivacyDashboardFragment.java
index 8f1d4c74ecc..5823407d2c0 100644
--- a/src/com/android/settings/privacy/PrivacyDashboardFragment.java
+++ b/src/com/android/settings/privacy/PrivacyDashboardFragment.java
@@ -16,9 +16,16 @@
 
 package com.android.settings.privacy;
 
+import android.app.ActionBar;
+import android.app.Activity;
 import android.app.settings.SettingsEnums;
 import android.content.Context;
+import android.os.Bundle;
 import android.provider.SearchIndexableResource;
+import android.util.Log;
+import android.view.View;
+
+import androidx.annotation.VisibleForTesting;
 
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
@@ -27,13 +34,14 @@ import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.search.SearchIndexable;
+import com.android.settingslib.widget.ActionBarShadowController;
 
 import java.util.ArrayList;
 import java.util.List;
 
 @SearchIndexable
 public class PrivacyDashboardFragment extends DashboardFragment {
-    private static final String TAG = "PrivacyDashboardFragment";
+    private static final String TAG = "PrivacyDashboardFrag";
     private static final String KEY_LOCK_SCREEN_NOTIFICATIONS = "privacy_lock_screen_notifications";
     private static final String KEY_WORK_PROFILE_CATEGORY =
             "privacy_work_profile_notifications_category";
@@ -65,6 +73,30 @@ public class PrivacyDashboardFragment extends DashboardFragment {
         return buildPreferenceControllers(context, getSettingsLifecycle());
     }
 
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        styleActionBar();
+    }
+
+    @VisibleForTesting
+    void styleActionBar() {
+        final Activity activity = getActivity();
+        final ActionBar actionBar = activity.getActionBar();
+        final Lifecycle lifecycle = getSettingsLifecycle();
+        final View scrollView = getListView();
+
+        if (actionBar == null) {
+            Log.w(TAG, "No actionbar, cannot style actionbar.");
+            return;
+        }
+
+        actionBar.setElevation(0);
+        if (lifecycle != null && scrollView != null) {
+            ActionBarShadowController.attachToView(activity, lifecycle, scrollView);
+        }
+    }
+
     private static List<AbstractPreferenceController> buildPreferenceControllers(
             Context context, Lifecycle lifecycle) {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
diff --git a/tests/robotests/src/com/android/settings/privacy/PrivacyDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/privacy/PrivacyDashboardFragmentTest.java
new file mode 100644
index 00000000000..d073e9b80b5
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/privacy/PrivacyDashboardFragmentTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.privacy;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.ActionBar;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.fragment.app.FragmentActivity;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class PrivacyDashboardFragmentTest {
+
+    private Context mContext;
+    private PrivacyDashboardFragment mFragment;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mFragment = spy(new PrivacyDashboardFragment());
+    }
+
+    @Test
+    public void onViewCreated_shouldCallStyleActionBar() {
+        final FragmentActivity activity = spy(
+                Robolectric.buildActivity(FragmentActivity.class).get());
+        final ActionBar actionBar = mock(ActionBar.class);
+
+        when(mFragment.getActivity()).thenReturn(activity);
+        when(mFragment.getSettingsLifecycle()).thenReturn(mock(Lifecycle.class));
+        when(mFragment.getListView()).thenReturn(mock(RecyclerView.class));
+        when(activity.getActionBar()).thenReturn(actionBar);
+
+        mFragment.onViewCreated(new View(mContext), new Bundle());
+
+        verify(mFragment).styleActionBar();
+    }
+}