Remove BatteryHeaderPreferenceController usage in PowerUsageSummary.

This is a no-op refactor. This change makes the BatteryHeaderPreference Catalyst migration doesn't depend on PowerUsageSummary.

Bug: 372774754
Test: manual
Flag: EXEMPT bug fix
Change-Id: I3d8d2856036f6840a0a163c35668f55baee487ab

src/com/android/settings/fuelgauge/BatteryHeaderPreferenceController.java

@@ -16,10 +16,17 @@
 
 package com.android.settings.fuelgauge;
 
+import static com.android.settings.fuelgauge.BatteryBroadcastReceiver.BatteryUpdateType.BATTERY_NOT_PRESENT;
+
 import android.content.Context;
 import android.content.Intent;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleEventObserver;
+import androidx.lifecycle.LifecycleOwner;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.core.BasePreferenceController;
@@ -29,27 +36,56 @@ import com.android.settingslib.widget.UsageProgressBarPreference;
 
 /** Controller that update the battery header view */
 public class BatteryHeaderPreferenceController extends BasePreferenceController
-        implements PreferenceControllerMixin {
+        implements PreferenceControllerMixin, LifecycleEventObserver {
     private static final String TAG = "BatteryHeaderPreferenceController";
     private static final int BATTERY_MAX_LEVEL = 100;
 
-    @VisibleForTesting UsageProgressBarPreference mBatteryUsageProgressBarPref;
+    @Nullable @VisibleForTesting BatteryBroadcastReceiver mBatteryBroadcastReceiver;
+    @Nullable @VisibleForTesting UsageProgressBarPreference mBatteryUsageProgressBarPreference;
 
     public BatteryHeaderPreferenceController(Context context, String key) {
         super(context, key);
     }
 
+    @Override
+    public void onStateChanged(@NonNull LifecycleOwner lifecycleOwner,
+            @NonNull Lifecycle.Event event) {
+        switch (event) {
+            case ON_CREATE:
+                mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(mContext);
+                mBatteryBroadcastReceiver.setBatteryChangedListener(
+                        type -> {
+                            if (type != BATTERY_NOT_PRESENT) {
+                                quickUpdateHeaderPreference();
+                            }
+                        });
+                break;
+            case ON_START:
+                if (mBatteryBroadcastReceiver != null) {
+                    mBatteryBroadcastReceiver.register();
+                }
+                break;
+            case ON_STOP:
+                if (mBatteryBroadcastReceiver != null) {
+                    mBatteryBroadcastReceiver.unRegister();
+                }
+                break;
+            default:
+                break;
+        }
+    }
+
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
-        mBatteryUsageProgressBarPref = screen.findPreference(getPreferenceKey());
+        mBatteryUsageProgressBarPreference = screen.findPreference(getPreferenceKey());
         // Hide the bottom summary from the progress bar.
-        mBatteryUsageProgressBarPref.setBottomSummary("");
+        mBatteryUsageProgressBarPreference.setBottomSummary("");
 
         if (com.android.settings.Utils.isBatteryPresent(mContext)) {
             quickUpdateHeaderPreference();
         } else {
-            mBatteryUsageProgressBarPref.setVisible(false);
+            mBatteryUsageProgressBarPreference.setVisible(false);
         }
     }
 
@@ -60,12 +96,17 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
 
     /** Updates {@link UsageProgressBarPreference} information. */
     public void quickUpdateHeaderPreference() {
+        if (mBatteryUsageProgressBarPreference == null) {
+            return;
+        }
+
         Intent batteryBroadcast =
                 com.android.settingslib.fuelgauge.BatteryUtils.getBatteryIntent(mContext);
         final int batteryLevel = Utils.getBatteryLevel(batteryBroadcast);
 
-        mBatteryUsageProgressBarPref.setUsageSummary(formatBatteryPercentageText(batteryLevel));
-        mBatteryUsageProgressBarPref.setPercent(batteryLevel, BATTERY_MAX_LEVEL);
+        mBatteryUsageProgressBarPreference.setUsageSummary(
+                formatBatteryPercentageText(batteryLevel));
+        mBatteryUsageProgressBarPreference.setPercent(batteryLevel, BATTERY_MAX_LEVEL);
     }
 
     private CharSequence formatBatteryPercentageText(int batteryLevel) {

src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummary.java

@@ -36,7 +36,6 @@ import androidx.preference.Preference;
 
 import com.android.settings.R;
 import com.android.settings.Utils;
-import com.android.settings.fuelgauge.BatteryHeaderPreferenceController;
 import com.android.settings.fuelgauge.BatteryHeaderTextPreferenceController;
 import com.android.settings.fuelgauge.BatteryInfo;
 import com.android.settings.fuelgauge.BatteryInfoLoader;
@@ -68,7 +67,6 @@ public class PowerUsageSummary extends PowerUsageBase
     @VisibleForTesting BatteryUtils mBatteryUtils;
     @VisibleForTesting BatteryInfo mBatteryInfo;
 
-    @VisibleForTesting BatteryHeaderPreferenceController mBatteryHeaderPreferenceController;
     @VisibleForTesting BatteryHeaderTextPreferenceController mBatteryHeaderTextPreferenceController;
     @VisibleForTesting BatteryTipPreferenceController mBatteryTipPreferenceController;
     @VisibleForTesting boolean mNeedUpdateBatteryTip;
@@ -95,7 +93,6 @@ public class PowerUsageSummary extends PowerUsageBase
 
                 @Override
                 public void onLoadFinished(Loader<BatteryInfo> loader, BatteryInfo batteryInfo) {
-                    mBatteryHeaderPreferenceController.quickUpdateHeaderPreference();
                     mBatteryHeaderTextPreferenceController.updateHeaderPreference(batteryInfo);
                     mBatteryHeaderTextPreferenceController.updateHeaderByBatteryTips(
                             mBatteryTipPreferenceController.getCurrentBatteryTip(), batteryInfo);
@@ -132,7 +129,6 @@ public class PowerUsageSummary extends PowerUsageBase
         super.onAttach(context);
         final Activity activity = getActivity();
 
-        mBatteryHeaderPreferenceController = use(BatteryHeaderPreferenceController.class);
         mBatteryHeaderTextPreferenceController = use(BatteryHeaderTextPreferenceController.class);
 
         mBatteryTipPreferenceController = use(BatteryTipPreferenceController.class);
@@ -254,15 +250,6 @@ public class PowerUsageSummary extends PowerUsageBase
         mNeedUpdateBatteryTip = icicle == null || mBatteryTipPreferenceController.needUpdate();
     }
 
-    @Override
-    protected void restartBatteryStatsLoader(@BatteryUpdateType int refreshType) {
-        super.restartBatteryStatsLoader(refreshType);
-        // Update battery header if battery is present.
-        if (mIsBatteryPresent) {
-            mBatteryHeaderPreferenceController.quickUpdateHeaderPreference();
-        }
-    }
-
     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);