Add high power whitelist for apps

- Strings not final!
 - New UX for power usage details (more preferency)
 - Add high power apps list shows on/off and screen to
   change (when possible)
 - Link from power usage summary to high power list
 - Link from advanced apps to high power list

Bug: 19991702
Change-Id: I97c927ed82d3b89041e4429b427508545763d66c

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

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2015 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.app.AlertDialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceChangeListener;
+import android.preference.SwitchPreference;
+
+import com.android.settings.InstrumentedFragment;
+import com.android.settings.R;
+import com.android.settings.applications.AppInfoWithHeader;
+import com.android.settings.applications.ApplicationsState.AppEntry;
+
+public class HighPowerDetail extends AppInfoWithHeader implements OnPreferenceChangeListener {
+
+    private static final String KEY_HIGH_POWER_SWITCH = "high_power_switch";
+
+    private final PowerWhitelistBackend mBackend = PowerWhitelistBackend.getInstance();
+
+    private SwitchPreference mUsageSwitch;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        addPreferencesFromResource(R.xml.high_power_details);
+        mUsageSwitch = (SwitchPreference) findPreference(KEY_HIGH_POWER_SWITCH);
+        mUsageSwitch.setOnPreferenceChangeListener(this);
+    }
+
+    @Override
+    protected boolean refreshUi() {
+        mUsageSwitch.setEnabled(!mBackend.isSysWhitelisted(mPackageName));
+        mUsageSwitch.setChecked(mBackend.isWhitelisted(mPackageName));
+        return true;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        if (newValue == Boolean.TRUE) {
+            mBackend.addApp(mPackageName);
+        } else {
+            mBackend.removeApp(mPackageName);
+        }
+        return true;
+    }
+
+    @Override
+    protected AlertDialog createDialog(int id, int errorCode) {
+        return null;
+    }
+
+    @Override
+    protected int getMetricsCategory() {
+        return InstrumentedFragment.VIEW_CATEGORY_HIGH_POWER_DETAILS;
+    }
+
+    public static CharSequence getSummary(Context context, AppEntry entry) {
+        return getSummary(context, entry.info.packageName);
+    }
+
+    public static CharSequence getSummary(Context context, String pkg) {
+        return context.getString(PowerWhitelistBackend.getInstance().isWhitelisted(pkg)
+                ? R.string.high_power_on : R.string.high_power_off);
+    }
+
+}