Add abnormal app page for battery settings

1. Add abnormal app page
2. Add strings for abnormal app page
3. Change AnomalyPreferenceController to open abnormal app page,
when there are more than one anomaly.
4. Add AnomalyPreference, who stores a reference of anomaly.

Also rename AnomalyPreferenceController to
AnomalySummaryPreferenceController because this controller is not
used to handle AnomalyPreference.

Following cls will add summary and icon for each abnormal app.

Bug: 37681665
Test: RunSettingsRoboTests
Change-Id: I4266f906476ff8daccd962572c8cfa99f948080a

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

@@ -0,0 +1,132 @@
+/*
+ * 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.fuelgauge;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.os.UserHandle;
+import android.support.v14.preference.PreferenceFragment;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceGroup;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.SettingsActivity;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.fuelgauge.anomaly.Anomaly;
+import com.android.settings.fuelgauge.anomaly.AnomalyDialogFragment;
+import com.android.settings.fuelgauge.anomaly.AnomalyPreference;
+
+import java.util.List;
+
+/**
+ * Fragment to show a list of anomaly apps, where user could handle these anomalies
+ */
+public class PowerUsageAnomalyDetails extends DashboardFragment implements
+        AnomalyDialogFragment.AnomalyDialogListener {
+
+    public static final String TAG = "PowerAbnormalUsageDetail";
+    @VisibleForTesting
+    static final String EXTRA_ANOMALY_LIST = "anomaly_list";
+    private static final int REQUEST_ANOMALY_ACTION = 0;
+    private static final String KEY_PREF_ANOMALY_LIST = "app_abnormal_list";
+
+    @VisibleForTesting
+    List<Anomaly> mAnomalies;
+    @VisibleForTesting
+    PreferenceGroup mAbnormalListGroup;
+
+    public static void startBatteryAbnormalPage(SettingsActivity caller,
+            PreferenceFragment fragment, List<Anomaly> anomalies) {
+        Bundle args = new Bundle();
+        args.putParcelableList(EXTRA_ANOMALY_LIST, anomalies);
+
+        caller.startPreferencePanelAsUser(fragment, PowerUsageAnomalyDetails.class.getName(), args,
+                R.string.battery_abnormal_details_title, null,
+                new UserHandle(UserHandle.myUserId()));
+    }
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+
+        mAnomalies = getArguments().getParcelableArrayList(EXTRA_ANOMALY_LIST);
+        mAbnormalListGroup = (PreferenceGroup) findPreference(KEY_PREF_ANOMALY_LIST);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        refreshUi();
+    }
+
+    @Override
+    public boolean onPreferenceTreeClick(Preference preference) {
+        if (preference instanceof AnomalyPreference) {
+            AnomalyPreference anomalyPreference = (AnomalyPreference) preference;
+            final Anomaly anomaly = anomalyPreference.getAnomaly();
+
+            AnomalyDialogFragment dialogFragment = AnomalyDialogFragment.newInstance(anomaly);
+            dialogFragment.setTargetFragment(this, REQUEST_ANOMALY_ACTION);
+            dialogFragment.show(getFragmentManager(), TAG);
+
+            return true;
+        }
+
+        return super.onPreferenceTreeClick(preference);
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.power_abnormal_detail;
+    }
+
+    @Override
+    protected List<PreferenceController> getPreferenceControllers(Context context) {
+        return null;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        //TODO(b/37681923): add correct metrics category
+        return 0;
+    }
+
+    void refreshUi() {
+        //TODO(b/37681665): cache the preference so we don't need to create new one every time.
+        mAbnormalListGroup.removeAll();
+        for (int i = 0, size = mAnomalies.size(); i < size; i++) {
+            final Anomaly anomaly = mAnomalies.get(i);
+            Preference pref = new AnomalyPreference(getPrefContext(), anomaly);
+
+            mAbnormalListGroup.addPreference(pref);
+        }
+    }
+
+    @Override
+    public void onAnomalyHandled(Anomaly anomaly) {
+        mAnomalies.remove(anomaly);
+        refreshUi();
+    }
+}