1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *      http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 *
15 *
16 */
17
18package com.android.settings.fuelgauge;
19
20import android.app.Activity;
21import android.content.Context;
22import android.content.Intent;
23import android.content.IntentFilter;
24import android.os.BatteryManager;
25import android.support.annotation.VisibleForTesting;
26import android.support.v14.preference.PreferenceFragment;
27import android.support.v7.preference.PreferenceScreen;
28import android.widget.TextView;
29
30import com.android.settings.R;
31import com.android.settings.applications.LayoutPreference;
32import com.android.settings.core.PreferenceControllerMixin;
33import com.android.settings.widget.EntityHeaderController;
34import com.android.settingslib.Utils;
35import com.android.settingslib.core.AbstractPreferenceController;
36import com.android.settingslib.core.lifecycle.Lifecycle;
37import com.android.settingslib.core.lifecycle.LifecycleObserver;
38import com.android.settingslib.core.lifecycle.events.OnStart;
39
40/**
41 * Controller that update the battery header view
42 */
43public class BatteryHeaderPreferenceController extends AbstractPreferenceController
44        implements PreferenceControllerMixin, LifecycleObserver, OnStart {
45    @VisibleForTesting
46    static final String KEY_BATTERY_HEADER = "battery_header";
47
48    @VisibleForTesting
49    BatteryMeterView mBatteryMeterView;
50    @VisibleForTesting
51    TextView mBatteryPercentText;
52    @VisibleForTesting
53    TextView mSummary1;
54    @VisibleForTesting
55    TextView mSummary2;
56
57    private final Activity mActivity;
58    private final PreferenceFragment mHost;
59    private final Lifecycle mLifecycle;
60
61    private LayoutPreference mBatteryLayoutPref;
62
63    public BatteryHeaderPreferenceController(Context context, Activity activity,
64            PreferenceFragment host, Lifecycle lifecycle) {
65        super(context);
66        mActivity = activity;
67        mHost = host;
68        mLifecycle = lifecycle;
69        if (mLifecycle != null) {
70            mLifecycle.addObserver(this);
71        }
72    }
73
74    @Override
75    public void displayPreference(PreferenceScreen screen) {
76        super.displayPreference(screen);
77        mBatteryLayoutPref = (LayoutPreference) screen.findPreference(KEY_BATTERY_HEADER);
78        mBatteryMeterView = (BatteryMeterView) mBatteryLayoutPref
79                .findViewById(R.id.battery_header_icon);
80        mBatteryPercentText = mBatteryLayoutPref.findViewById(R.id.battery_percent);
81        mSummary1 = mBatteryLayoutPref.findViewById(R.id.summary1);
82        mSummary2 = mBatteryLayoutPref.findViewById(R.id.summary2);
83
84        quickUpdateHeaderPreference();
85    }
86
87    @Override
88    public boolean isAvailable() {
89        return true;
90    }
91
92    @Override
93    public String getPreferenceKey() {
94        return KEY_BATTERY_HEADER;
95    }
96
97    @Override
98    public void onStart() {
99        EntityHeaderController.newInstance(mActivity, mHost,
100                mBatteryLayoutPref.findViewById(R.id.battery_entity_header))
101                .setRecyclerView(mHost.getListView(), mLifecycle)
102                .styleActionBar(mActivity);
103    }
104
105    public void updateHeaderPreference(BatteryInfo info) {
106        mBatteryPercentText.setText(Utils.formatPercentage(info.batteryLevel));
107        if (info.remainingLabel == null) {
108            mSummary1.setText(info.statusLabel);
109        } else {
110            mSummary1.setText(info.remainingLabel);
111        }
112        // Clear this just to be sure we don't get UI jank on re-entering this view from another
113        // activity.
114        mSummary2.setText("");
115
116        mBatteryMeterView.setBatteryLevel(info.batteryLevel);
117        mBatteryMeterView.setCharging(!info.discharging);
118    }
119
120    public void quickUpdateHeaderPreference() {
121        Intent batteryBroadcast = mContext.registerReceiver(null,
122                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
123        final int batteryLevel = Utils.getBatteryLevel(batteryBroadcast);
124        final boolean discharging =
125                batteryBroadcast.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) == 0;
126
127        // Set battery level and charging status
128        mBatteryMeterView.setBatteryLevel(batteryLevel);
129        mBatteryMeterView.setCharging(!discharging);
130        mBatteryPercentText.setText(Utils.formatPercentage(batteryLevel));
131
132        // clear all the summaries
133        mSummary1.setText("");
134        mSummary2.setText("");
135    }
136}
137