Add user icon to the other user preferences.

This icon is loaded in the background to avoid doing IO on
the main thread. Once we know there are more users and also
have the icon loaded, we add the category to the view.

Fixes: 36252572
Test: Robotest

Change-Id: Ib50287bb7ed323f22fbe407b56be1bf2fe98f121
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index 4c8fb2d..d04ae8d 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -73,7 +73,6 @@
 import android.provider.ContactsContract.Profile;
 import android.provider.ContactsContract.RawContacts;
 import android.provider.Settings;
-import android.service.persistentdata.PersistentDataBlockManager;
 import android.support.annotation.StringRes;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceGroup;
diff --git a/src/com/android/settings/applications/UserManagerWrapper.java b/src/com/android/settings/applications/UserManagerWrapper.java
index daefb84..5b4ed2a 100644
--- a/src/com/android/settings/applications/UserManagerWrapper.java
+++ b/src/com/android/settings/applications/UserManagerWrapper.java
@@ -17,6 +17,7 @@
 package com.android.settings.applications;
 
 import android.content.pm.UserInfo;
+
 import java.util.List;
 
 /**
diff --git a/src/com/android/settings/deviceinfo/StorageDashboardFragment.java b/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
index 75c0e75..602e65f 100644
--- a/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
+++ b/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
@@ -20,6 +20,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.Loader;
+import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
@@ -47,6 +48,7 @@
 import com.android.settings.deviceinfo.storage.StorageAsyncLoader;
 import com.android.settings.deviceinfo.storage.StorageItemPreferenceController;
 import com.android.settings.deviceinfo.storage.StorageSummaryDonutPreferenceController;
+import com.android.settings.deviceinfo.storage.UserIconLoader;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
 import com.android.settingslib.applications.StorageStatsSource;
@@ -61,6 +63,7 @@
     implements LoaderManager.LoaderCallbacks<SparseArray<StorageAsyncLoader.AppsStorageResult>> {
     private static final String TAG = "StorageDashboardFrag";
     private static final int STORAGE_JOB_ID = 0;
+    private static final int ICON_JOB_ID = 1;
     private static final int OPTIONS_MENU_MIGRATE_DATA = 100;
 
     private VolumeInfo mVolume;
@@ -71,34 +74,6 @@
     private List<PreferenceController> mSecondaryUsers;
 
     @Override
-    public void onResume() {
-        super.onResume();
-        getLoaderManager().initLoader(STORAGE_JOB_ID, Bundle.EMPTY, this);
-    }
-
-    @Override
-    public Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> onCreateLoader(int id,
-            Bundle args) {
-        Context context = getContext();
-        return new StorageAsyncLoader(context,
-                new UserManagerWrapperImpl(context.getSystemService(UserManager.class)),
-                mVolume.fsUuid,
-                new StorageStatsSource(context),
-                new PackageManagerWrapperImpl(context.getPackageManager()));
-    }
-
-    @Override
-    public void onLoadFinished(Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader,
-            SparseArray<StorageAsyncLoader.AppsStorageResult> data) {
-        mPreferenceController.onLoadFinished(data.get(UserHandle.myUserId()));
-        updateSecondaryUserControllers(mSecondaryUsers, data);
-    }
-
-    @Override
-    public void onLoaderReset(Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader) {
-    }
-
-    @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
@@ -140,6 +115,13 @@
     }
 
     @Override
+    public void onResume() {
+        super.onResume();
+        getLoaderManager().initLoader(STORAGE_JOB_ID, Bundle.EMPTY, this);
+        getLoaderManager().initLoader(ICON_JOB_ID, Bundle.EMPTY, new IconLoaderCallbacks());
+    }
+
+    @Override
     public int getMetricsCategory() {
         return MetricsProto.MetricsEvent.SETTINGS_STORAGE_CATEGORY;
     }
@@ -227,4 +209,55 @@
                 }
 
             };
+
+    @Override
+    public Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> onCreateLoader(int id,
+            Bundle args) {
+        Context context = getContext();
+        return new StorageAsyncLoader(context,
+                new UserManagerWrapperImpl(context.getSystemService(UserManager.class)),
+                mVolume.fsUuid,
+                new StorageStatsSource(context),
+                new PackageManagerWrapperImpl(context.getPackageManager()));
+    }
+
+    @Override
+    public void onLoadFinished(Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader,
+            SparseArray<StorageAsyncLoader.AppsStorageResult> data) {
+        mPreferenceController.onLoadFinished(data.get(UserHandle.myUserId()));
+        updateSecondaryUserControllers(mSecondaryUsers, data);
+    }
+
+    @Override
+    public void onLoaderReset(Loader<SparseArray<StorageAsyncLoader.AppsStorageResult>> loader) {
+    }
+
+    /**
+     * IconLoaderCallbacks exists because StorageDashboardFragment already implements
+     * LoaderCallbacks for a different type.
+     */
+    public final class IconLoaderCallbacks
+            implements LoaderManager.LoaderCallbacks<SparseArray<Drawable>> {
+        @Override
+        public Loader<SparseArray<Drawable>> onCreateLoader(int id, Bundle args) {
+            return new UserIconLoader(
+                    getContext(),
+                    () -> UserIconLoader.loadUserIconsWithContext(getContext()));
+        }
+
+        @Override
+        public void onLoadFinished(
+                Loader<SparseArray<Drawable>> loader, SparseArray<Drawable> data) {
+            mSecondaryUsers
+                    .stream()
+                    .filter(controller -> controller instanceof UserIconLoader.UserIconHandler)
+                    .forEach(
+                            controller ->
+                                    ((UserIconLoader.UserIconHandler) controller)
+                                            .handleUserIcons(data));
+        }
+
+        @Override
+        public void onLoaderReset(Loader<SparseArray<Drawable>> loader) {}
+    }
 }
diff --git a/src/com/android/settings/deviceinfo/storage/SecondaryUserController.java b/src/com/android/settings/deviceinfo/storage/SecondaryUserController.java
index b3e89c6..62e946d 100644
--- a/src/com/android/settings/deviceinfo/storage/SecondaryUserController.java
+++ b/src/com/android/settings/deviceinfo/storage/SecondaryUserController.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.content.pm.UserInfo;
+import android.graphics.drawable.Drawable;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.VisibleForTesting;
@@ -37,8 +38,8 @@
  * SecondaryUserController controls the preferences on the Storage screen which had to do with
  * secondary users.
  */
-public class SecondaryUserController extends PreferenceController implements
-        StorageAsyncLoader.ResultHandler {
+public class SecondaryUserController extends PreferenceController
+        implements StorageAsyncLoader.ResultHandler, UserIconLoader.UserIconHandler {
     // PreferenceGroupKey to try to add our preference onto.
     private static final String TARGET_PREFERENCE_GROUP_KEY = "pref_secondary_users";
     private static final String PREFERENCE_KEY_BASE = "pref_user_";
@@ -69,8 +70,9 @@
             }
 
             if (info == null || Utils.isProfileOf(primaryUser, info)) {
-                controllers.add(new UserProfileController(context, info,
-                        USER_PROFILE_INSERTION_LOCATION));
+                controllers.add(
+                        new UserProfileController(
+                                context, info, userManager, USER_PROFILE_INSERTION_LOCATION));
                 continue;
             }
 
@@ -109,8 +111,6 @@
                 mStoragePreference.setStorageSize(mSize, mTotalSizeBytes);
             }
 
-            // TODO(b/36252572): Set the user icon appropriately here.
-
             group.setVisible(true);
             group.addPreference(mStoragePreference);
         }
@@ -161,6 +161,14 @@
         }
     }
 
+    @Override
+    public void handleUserIcons(SparseArray<Drawable> fetchedIcons) {
+        Drawable userIcon = fetchedIcons.get(mUser.id);
+        if (userIcon != null) {
+            mStoragePreference.setIcon(userIcon);
+        }
+    }
+
     private static class NoSecondaryUserController extends PreferenceController {
         public NoSecondaryUserController(Context context) {
             super(context);
diff --git a/src/com/android/settings/deviceinfo/storage/UserIconLoader.java b/src/com/android/settings/deviceinfo/storage/UserIconLoader.java
new file mode 100644
index 0000000..4f00c3c
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/storage/UserIconLoader.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2017 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.deviceinfo.storage;
+
+import android.content.Context;
+import android.content.pm.UserInfo;
+import android.graphics.drawable.Drawable;
+import android.os.UserManager;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.util.Preconditions;
+import com.android.settings.Utils;
+import com.android.settings.utils.AsyncLoader;
+
+/**
+ * Fetches a user icon as a loader using a given icon loading lambda.
+ */
+public class UserIconLoader extends AsyncLoader<SparseArray<Drawable>> {
+    private FetchUserIconTask mTask;
+
+    /**
+     * Task to load all user icons.
+     */
+    public interface FetchUserIconTask {
+        SparseArray<Drawable> getUserIcons();
+    }
+
+    /**
+     * Handle the output of this task.
+     */
+    public interface UserIconHandler {
+        void handleUserIcons(SparseArray<Drawable> fetchedIcons);
+    }
+
+    public UserIconLoader(Context context, FetchUserIconTask task) {
+        super(context);
+        mTask = Preconditions.checkNotNull(task);
+    }
+
+    @Override
+    public SparseArray<Drawable> loadInBackground() {
+        return mTask.getUserIcons();
+    }
+
+    @Override
+    protected void onDiscardResult(SparseArray<Drawable> result) {}
+
+    /**
+     * Loads the user icons using a given context. This returns a {@link SparseArray} which maps
+     * user ids to their user icons.
+     */
+    public static SparseArray<Drawable> loadUserIconsWithContext(Context context) {
+        SparseArray<Drawable> value = new SparseArray<>();
+        UserManager um = context.getSystemService(UserManager.class);
+        for (UserInfo userInfo : um.getUsers()) {
+            value.put(userInfo.id, Utils.getUserIcon(context, um, userInfo));
+        }
+        return value;
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/storage/UserProfileController.java b/src/com/android/settings/deviceinfo/storage/UserProfileController.java
index 0e19740..18fa7b7 100644
--- a/src/com/android/settings/deviceinfo/storage/UserProfileController.java
+++ b/src/com/android/settings/deviceinfo/storage/UserProfileController.java
@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.UserInfo;
+import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.storage.VolumeInfo;
 import android.support.v7.preference.Preference;
@@ -28,25 +29,27 @@
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.internal.util.Preconditions;
 import com.android.settings.Utils;
+import com.android.settings.applications.UserManagerWrapper;
 import com.android.settings.core.PreferenceController;
 import com.android.settings.deviceinfo.StorageItemPreference;
 import com.android.settings.deviceinfo.StorageProfileFragment;
 import com.android.settingslib.drawer.SettingsDrawerActivity;
 
-/**
- * Defines a {@link PreferenceController} which handles a single profile of the primary user.
- */
-public class UserProfileController extends PreferenceController implements
-        StorageAsyncLoader.ResultHandler {
+/** Defines a {@link PreferenceController} which handles a single profile of the primary user. */
+public class UserProfileController extends PreferenceController
+        implements StorageAsyncLoader.ResultHandler, UserIconLoader.UserIconHandler {
     private static final String PREFERENCE_KEY_BASE = "pref_profile_";
     private StorageItemPreference mStoragePreference;
+    private UserManagerWrapper mUserManager;
     private UserInfo mUser;
     private long mTotalSizeBytes;
     private final int mPreferenceOrder;
 
-    public UserProfileController(Context context, UserInfo info, int preferenceOrder) {
+    public UserProfileController(
+            Context context, UserInfo info, UserManagerWrapper userManager, int preferenceOrder) {
         super(context);
         mUser = Preconditions.checkNotNull(info);
+        mUserManager = userManager;
         mPreferenceOrder = preferenceOrder;
     }
 
@@ -66,7 +69,6 @@
         mStoragePreference.setOrder(mPreferenceOrder);
         mStoragePreference.setKey(PREFERENCE_KEY_BASE + mUser.id);
         mStoragePreference.setTitle(mUser.name);
-        // TODO(b/36252572): Set user icon here.
         screen.addPreference(mStoragePreference);
     }
 
@@ -110,4 +112,12 @@
     public void setTotalSize(long totalSize) {
         mTotalSizeBytes = totalSize;
     }
+
+    @Override
+    public void handleUserIcons(SparseArray<Drawable> fetchedIcons) {
+        Drawable userIcon = fetchedIcons.get(mUser.id);
+        if (userIcon != null) {
+            mStoragePreference.setIcon(userIcon);
+        }
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/storage/SecondaryUserControllerTest.java b/tests/robotests/src/com/android/settings/deviceinfo/storage/SecondaryUserControllerTest.java
index 16bf1ae..c55ba36 100644
--- a/tests/robotests/src/com/android/settings/deviceinfo/storage/SecondaryUserControllerTest.java
+++ b/tests/robotests/src/com/android/settings/deviceinfo/storage/SecondaryUserControllerTest.java
@@ -19,12 +19,14 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Matchers.anyString;
-import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import android.content.Context;
 import android.content.pm.UserInfo;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.Drawable;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceGroup;
 import android.support.v7.preference.PreferenceScreen;
@@ -34,7 +36,9 @@
 import com.android.settings.TestConfig;
 import com.android.settings.applications.UserManagerWrapper;
 import com.android.settings.core.PreferenceController;
+import com.android.settingslib.R;
 import com.android.settingslib.applications.StorageStatsSource;
+import com.android.settingslib.drawable.UserIconDrawable;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -187,4 +191,24 @@
         // We should have the NoSecondaryUserController.
         assertThat(controllers.get(0) instanceof SecondaryUserController).isFalse();
     }
+
+    @Test
+    public void iconCallbackChangesPreferenceIcon() throws Exception {
+        SparseArray<Drawable> icons = new SparseArray<>();
+        Bitmap userBitmap =
+                BitmapFactory.decodeResource(
+                        RuntimeEnvironment.application.getResources(), R.drawable.home);
+        UserIconDrawable drawable = new UserIconDrawable(100 /* size */).setIcon(userBitmap).bake();
+        icons.put(10, drawable);
+        mPrimaryUser.name = TEST_NAME;
+        mPrimaryUser.id = 10;
+        mController.displayPreference(mScreen);
+
+        mController.handleUserIcons(icons);
+
+        final ArgumentCaptor<Preference> argumentCaptor = ArgumentCaptor.forClass(Preference.class);
+        verify(mGroup).addPreference(argumentCaptor.capture());
+        Preference preference = argumentCaptor.getValue();
+        assertThat(preference.getIcon()).isEqualTo(drawable);
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/storage/UserProfileControllerTest.java b/tests/robotests/src/com/android/settings/deviceinfo/storage/UserProfileControllerTest.java
index ed49da4..0c3fc47 100644
--- a/tests/robotests/src/com/android/settings/deviceinfo/storage/UserProfileControllerTest.java
+++ b/tests/robotests/src/com/android/settings/deviceinfo/storage/UserProfileControllerTest.java
@@ -18,7 +18,6 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
-import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -26,6 +25,9 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.UserInfo;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.Drawable;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
 import android.util.SparseArray;
@@ -36,7 +38,9 @@
 import com.android.settings.TestConfig;
 import com.android.settings.applications.UserManagerWrapper;
 import com.android.settings.deviceinfo.StorageProfileFragment;
+import com.android.settingslib.R;
 import com.android.settingslib.applications.StorageStatsSource;
+import com.android.settingslib.drawable.UserIconDrawable;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -66,16 +70,15 @@
         MockitoAnnotations.initMocks(this);
         mContext = spy(RuntimeEnvironment.application);
         mPrimaryProfile = new UserInfo();
-        mController = new UserProfileController(mContext, mPrimaryProfile, 0);
+        mController = new UserProfileController(mContext, mPrimaryProfile, mUserManager, 0);
         when(mScreen.getContext()).thenReturn(mContext);
+        mPrimaryProfile.name = TEST_NAME;
+        mPrimaryProfile.id = 10;
+        mController.displayPreference(mScreen);
     }
 
     @Test
     public void controllerAddsPrimaryProfilePreference() throws Exception {
-        mPrimaryProfile.name = TEST_NAME;
-        mPrimaryProfile.id = 10;
-        mController.displayPreference(mScreen);
-
         final ArgumentCaptor<Preference> argumentCaptor = ArgumentCaptor.forClass(Preference.class);
         verify(mScreen).addPreference(argumentCaptor.capture());
         Preference preference = argumentCaptor.getValue();
@@ -86,9 +89,6 @@
 
     @Test
     public void tappingProfilePreferenceSendsToStorageProfileFragment() throws Exception {
-        mPrimaryProfile.name = TEST_NAME;
-        mPrimaryProfile.id = 10;
-        mController.displayPreference(mScreen);
 
         final ArgumentCaptor<Preference> argumentCaptor = ArgumentCaptor.forClass(Preference.class);
         verify(mScreen).addPreference(argumentCaptor.capture());
@@ -105,9 +105,6 @@
 
     @Test
     public void acceptingResultUpdatesPreferenceSize() throws Exception {
-        mPrimaryProfile.name = TEST_NAME;
-        mPrimaryProfile.id = 10;
-        mController.displayPreference(mScreen);
         SparseArray<StorageAsyncLoader.AppsStorageResult> result = new SparseArray<>();
         StorageAsyncLoader.AppsStorageResult userResult =
                 new StorageAsyncLoader.AppsStorageResult();
@@ -121,4 +118,21 @@
 
         assertThat(preference.getSummary()).isEqualTo("99.00B");
     }
+
+    @Test
+    public void iconCallbackChangesPreferenceIcon() throws Exception {
+        SparseArray<Drawable> icons = new SparseArray<>();
+        Bitmap userBitmap =
+                BitmapFactory.decodeResource(
+                        RuntimeEnvironment.application.getResources(), R.drawable.home);
+        UserIconDrawable drawable = new UserIconDrawable(100 /* size */).setIcon(userBitmap).bake();
+        icons.put(10, drawable);
+
+        mController.handleUserIcons(icons);
+
+        final ArgumentCaptor<Preference> argumentCaptor = ArgumentCaptor.forClass(Preference.class);
+        verify(mScreen).addPreference(argumentCaptor.capture());
+        Preference preference = argumentCaptor.getValue();
+        assertThat(preference.getIcon()).isEqualTo(drawable);
+    }
 }
\ No newline at end of file