Hook up the storage item preferences to actual data.

This uses the same storage query implementation as the previous
iteration of the Storage Settings. In b/32206268, a new API for
querying this information will be added for querying this info.

Once the new API has landed, a future patch will swap out the
impl, but this should work for today.

Bug: 33199077
Test: Settings Robo Tests
Change-Id: I58763e8ee38aabbea533bc614268288e854ff8d4
diff --git a/src/com/android/settings/deviceinfo/StorageDashboardFragment.java b/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
index abefce6..efcf479 100644
--- a/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
+++ b/src/com/android/settings/deviceinfo/StorageDashboardFragment.java
@@ -81,6 +81,8 @@
         final long usedBytes = mTotalSize - mVolume.getPath().getFreeSpace();
         mSummaryController.updateBytes(usedBytes, mTotalSize);
         mPreferenceController.setVolume(mVolume);
+        mPreferenceController.setSystemSize(systemSize);
+        mPreferenceController.startMeasurement();
 
         // Initialize the footer preference to go to the smart storage management.
         final FooterPreference pref = mFooterPreferenceMixin.createFooterPreference();
@@ -119,8 +121,8 @@
         controllers.add(mSummaryController);
 
         StorageManager sm = context.getSystemService(StorageManager.class);
-        mPreferenceController = new StorageItemPreferenceController(context, this, mVolume,
-                new StorageManagerVolumeProvider(sm));
+        mPreferenceController = new StorageItemPreferenceController(context, getLifecycle(), this,
+                mVolume, new StorageManagerVolumeProvider(sm));
         controllers.add(mPreferenceController);
         controllers.add(new ManageStoragePreferenceController(context));
         return controllers;
diff --git a/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceController.java b/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceController.java
index 3e802fd..dce8a25 100644
--- a/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceController.java
+++ b/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceController.java
@@ -21,11 +21,14 @@
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.Environment;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.os.storage.VolumeInfo;
 import android.provider.DocumentsContract;
+import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
 import android.util.Log;
 
 import com.android.settings.R;
@@ -33,24 +36,56 @@
 import com.android.settings.Utils;
 import com.android.settings.applications.ManageApplications;
 import com.android.settings.core.PreferenceController;
+import com.android.settings.core.lifecycle.Lifecycle;
+import com.android.settings.core.lifecycle.LifecycleObserver;
+import com.android.settings.core.lifecycle.events.OnDestroy;
+import com.android.settings.deviceinfo.StorageItemPreference;
+import com.android.settingslib.deviceinfo.StorageMeasurement;
 import com.android.settingslib.deviceinfo.StorageVolumeProvider;
 
+import java.util.HashMap;
+
 
 /**
  * StorageItemPreferenceController handles the storage line items which summarize the storage
  * categorization breakdown.
  */
-public class StorageItemPreferenceController extends PreferenceController {
+public class StorageItemPreferenceController extends PreferenceController
+        implements StorageMeasurement.MeasurementReceiver, LifecycleObserver, OnDestroy {
     private static final String TAG = "StorageItemPreference";
+
+    @VisibleForTesting
+    static final String PHOTO_KEY = "pref_photos_videos";
+    @VisibleForTesting
+    static final String AUDIO_KEY = "pref_music_audio";
+    @VisibleForTesting
+    static final String GAME_KEY = "pref_games";
+    @VisibleForTesting
+    static final String OTHER_APPS_KEY = "pref_other_apps";
+    @VisibleForTesting
+    static final String SYSTEM_KEY = "pref_system";
+    @VisibleForTesting
+    static final String FILES_KEY = "pref_files";
+
     private final Fragment mFragment;
     private final StorageVolumeProvider mSvp;
     private VolumeInfo mVolume;
     private final int mUserId;
+    private StorageMeasurement mMeasure;
+    private long mSystemSize;
+    private long mUsedSize;
+
+    private StorageItemPreferenceAlternate mPhotoPreference;
+    private StorageItemPreferenceAlternate mAudioPreference;
+    private StorageItemPreferenceAlternate mGamePreference;
+    private StorageItemPreferenceAlternate mAppPreference;
+    private StorageItemPreferenceAlternate mFilePreference;
+    private StorageItemPreferenceAlternate mSystemPreference;
 
     private static final String AUTHORITY_MEDIA = "com.android.providers.media.documents";
 
-    public StorageItemPreferenceController(Context context, Fragment hostFragment,
-            VolumeInfo volume, StorageVolumeProvider svp) {
+    public StorageItemPreferenceController(Context context, Lifecycle lifecycle,
+            Fragment hostFragment, VolumeInfo volume, StorageVolumeProvider svp) {
         super(context);
         mFragment = hostFragment;
         mVolume = volume;
@@ -58,6 +93,10 @@
 
         UserManager um = mContext.getSystemService(UserManager.class);
         mUserId = um.getUserHandle();
+
+        if (lifecycle != null) {
+            lifecycle.addObserver(this);
+        }
     }
 
     @Override
@@ -75,15 +114,15 @@
         //       After the intermediate views are built, swap them in.
         Intent intent = null;
         switch (preference.getKey()) {
-            case "pref_photos_videos":
+            case PHOTO_KEY:
                 intent = getPhotosIntent();
                 break;
-            case "pref_music_audio":
+            case AUDIO_KEY:
                 intent = getAudioIntent();
                 break;
-            case "pref_games":
+            case GAME_KEY:
                 // TODO: Once app categorization is added, make this section.
-            case "pref_other_apps":
+            case OTHER_APPS_KEY:
                 // Because we are likely constructed with a null volume, this is theoretically
                 // possible.
                 if (mVolume == null) {
@@ -91,7 +130,7 @@
                 }
                 intent = getAppsIntent();
                 break;
-            case "pref_files":
+            case FILES_KEY:
                 intent = getFilesIntent();
                 break;
         }
@@ -118,6 +157,81 @@
         mVolume = volume;
     }
 
+    @Override
+    public void onDetailsChanged(StorageMeasurement.MeasurementDetails details) {
+        final long imagesSize = totalValues(details, mUserId,
+                Environment.DIRECTORY_DCIM,
+                Environment.DIRECTORY_PICTURES,
+                Environment.DIRECTORY_MOVIES);
+        if (mPhotoPreference != null) {
+            mPhotoPreference.setStorageSize(imagesSize);
+        }
+
+        final long audioSize = totalValues(details, mUserId,
+                Environment.DIRECTORY_MUSIC,
+                Environment.DIRECTORY_ALARMS,
+                Environment.DIRECTORY_NOTIFICATIONS,
+                Environment.DIRECTORY_RINGTONES,
+                Environment.DIRECTORY_PODCASTS);
+        if (mAudioPreference != null) {
+            mAudioPreference.setStorageSize(audioSize);
+        }
+
+        if (mGamePreference != null) {
+            mGamePreference.setStorageSize(0);
+        }
+
+        final long appSize = details.appsSize.get(mUserId);
+        if (mAppPreference != null) {
+            mAppPreference.setStorageSize(appSize);
+        }
+
+        if (mSystemPreference != null) {
+            mSystemPreference.setStorageSize(mSystemSize);
+        }
+
+        final long downloadsSize = totalValues(details, mUserId, Environment.DIRECTORY_DOWNLOADS);
+        final long miscSize = details.miscSize.get(mUserId);
+        if (mFilePreference != null) {
+            mFilePreference.setStorageSize(downloadsSize + miscSize);
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        if (mMeasure != null) {
+            mMeasure.onDestroy();
+        }
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        mPhotoPreference = (StorageItemPreferenceAlternate) screen.findPreference(PHOTO_KEY);
+        mAudioPreference = (StorageItemPreferenceAlternate) screen.findPreference(AUDIO_KEY);
+        mGamePreference = (StorageItemPreferenceAlternate) screen.findPreference(GAME_KEY);
+        mAppPreference = (StorageItemPreferenceAlternate) screen.findPreference(OTHER_APPS_KEY);
+        mSystemPreference = (StorageItemPreferenceAlternate) screen.findPreference(SYSTEM_KEY);
+        mFilePreference = (StorageItemPreferenceAlternate) screen.findPreference(FILES_KEY);
+    }
+
+    /**
+     * Begins an asynchronous storage measurement task for the preferences.
+     */
+    public void startMeasurement() {
+        //TODO: When the GID-based measurement system is completed, swap in the GID impl.
+        mMeasure = new StorageMeasurement(mContext, mVolume, mSvp.findEmulatedForPrivate(mVolume));
+        mMeasure.setReceiver(this);
+        mMeasure.forceMeasure();
+    }
+
+    /**
+     * Sets the system size for the system size preference.
+     * @param systemSize the size of the system in bytes
+     */
+    public void setSystemSize(long systemSize) {
+        mSystemSize = systemSize;
+    }
+
     private Intent getPhotosIntent() {
         Intent intent = new Intent(DocumentsContract.ACTION_BROWSE);
         intent.setData(DocumentsContract.buildRootUri(AUTHORITY_MEDIA, "images_root"));
@@ -160,4 +274,20 @@
             Log.w(TAG, "No activity found for " + intent);
         }
     }
+
+    private static long totalValues(StorageMeasurement.MeasurementDetails details, int userId,
+            String... keys) {
+        long total = 0;
+        HashMap<String, Long> map = details.mediaSize.get(userId);
+        if (map != null) {
+            for (String key : keys) {
+                if (map.containsKey(key)) {
+                    total += map.get(key);
+                }
+            }
+        } else {
+            Log.w(TAG, "MeasurementDetails mediaSize array does not have key for user " + userId);
+        }
+        return total;
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceControllerTest.java
index 19936c4..b0c0b44 100644
--- a/tests/robotests/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/deviceinfo/storage/StorageItemPreferenceControllerTest.java
@@ -18,16 +18,20 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import android.app.Fragment;
 import android.content.Context;
 import android.content.Intent;
+import android.os.Environment;
 import android.os.UserHandle;
 import android.os.storage.VolumeInfo;
 import android.provider.DocumentsContract;
+import android.support.v7.preference.PreferenceScreen;
 import android.view.LayoutInflater;
+import android.view.View;
 import android.widget.LinearLayout;
 
 import com.android.settings.R;
@@ -36,6 +40,7 @@
 import com.android.settings.SubSettings;
 import com.android.settings.TestConfig;
 import com.android.settings.applications.ManageApplications;
+import com.android.settingslib.deviceinfo.StorageMeasurement;
 import com.android.settingslib.deviceinfo.StorageVolumeProvider;
 
 import org.junit.Before;
@@ -44,13 +49,22 @@
 import org.mockito.Answers;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 
+import java.util.HashMap;
+
 @RunWith(SettingsRobolectricTestRunner.class)
 @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
 public class StorageItemPreferenceControllerTest {
+    /**
+     *  In O, this will change to 1000 instead of 1024 due to the formatter properly defining a
+     *  kilobyte.
+     */
+    private static long KILOBYTE = 1024L;
+
     private Context mContext;
     private VolumeInfo mVolume;
     @Mock(answer = Answers.RETURNS_DEEP_STUBS)
@@ -65,12 +79,15 @@
         MockitoAnnotations.initMocks(this);
         mVolume = new VolumeInfo("id", 0, null, "id");
         mContext = RuntimeEnvironment.application;
-        mController = new StorageItemPreferenceController(mContext, mFragment, mVolume, mSvp);
+        // Note: null is passed as the Lifecycle because we are handling it outside of the normal
+        //       Settings fragment lifecycle for test purposes.
+        mController = new StorageItemPreferenceController(mContext, null, mFragment, mVolume, mSvp);
         mPreference = new StorageItemPreferenceAlternate(mContext);
 
         // Inflate the preference and the widget.
         LayoutInflater inflater = LayoutInflater.from(mContext);
-        inflater.inflate(mPreference.getLayoutResource(), new LinearLayout(mContext), false);
+        final View view = inflater.inflate(
+                mPreference.getLayoutResource(), new LinearLayout(mContext), false);
     }
 
     @Test
@@ -142,4 +159,46 @@
         assertThat(intent.getAction()).isEqualTo(browseIntent.getAction());
         assertThat(intent.getData()).isEqualTo(browseIntent.getData());
     }
+
+    @Test
+    public void testMeasurementCompletedUpdatesPreferences() {
+        StorageItemPreferenceAlternate audio = new StorageItemPreferenceAlternate(mContext);
+        StorageItemPreferenceAlternate image = new StorageItemPreferenceAlternate(mContext);
+        StorageItemPreferenceAlternate games = new StorageItemPreferenceAlternate(mContext);
+        StorageItemPreferenceAlternate apps = new StorageItemPreferenceAlternate(mContext);
+        StorageItemPreferenceAlternate system = new StorageItemPreferenceAlternate(mContext);
+        StorageItemPreferenceAlternate files = new StorageItemPreferenceAlternate(mContext);
+        PreferenceScreen screen = mock(PreferenceScreen.class);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.AUDIO_KEY))).thenReturn(audio);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.PHOTO_KEY))).thenReturn(image);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.GAME_KEY))).thenReturn(games);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.OTHER_APPS_KEY))).thenReturn(apps);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.SYSTEM_KEY))).thenReturn(system);
+        when(screen.findPreference(
+                Mockito.eq(StorageItemPreferenceController.FILES_KEY))).thenReturn(files);
+        mController.displayPreference(screen);
+
+        StorageMeasurement.MeasurementDetails details = new StorageMeasurement.MeasurementDetails();
+        details.appsSize.put(0, KILOBYTE);
+        HashMap<String, Long> mediaSizes = new HashMap<>();
+        mediaSizes.put(Environment.DIRECTORY_PICTURES, KILOBYTE * 2);
+        mediaSizes.put(Environment.DIRECTORY_MOVIES, KILOBYTE * 3);
+        mediaSizes.put(Environment.DIRECTORY_MUSIC, KILOBYTE * 4);
+        mediaSizes.put(Environment.DIRECTORY_DOWNLOADS, KILOBYTE * 5);
+        details.mediaSize.put(0, mediaSizes);
+        mController.setSystemSize(KILOBYTE * 6);
+        mController.onDetailsChanged(details);
+
+        assertThat(audio.getSummary().toString()).isEqualTo("4.00KB");
+        assertThat(image.getSummary().toString()).isEqualTo("5.00KB");
+        assertThat(games.getSummary().toString()).isEqualTo("0");
+        assertThat(apps.getSummary().toString()).isEqualTo("1.00KB");
+        assertThat(system.getSummary().toString()).isEqualTo("6.00KB");
+        assertThat(files.getSummary().toString()).isEqualTo("5.00KB");
+    }
 }
\ No newline at end of file