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/*
* Copyright (C) 2010 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.content.Intent;
import android.os.BatteryStats;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import com.android.internal.os.BatteryStatsHelper;
import com.android.settings.R;
import com.android.settings.SettingsActivity;
/**
* Custom preference for displaying power consumption as a bar and an icon on the left for the
* subsystem/app type.
*
*/
public class BatteryHistoryPreference extends Preference {
protected static final String BATTERY_HISTORY_FILE = "tmp_bat_history.bin";
private BatteryStats mStats;
private Intent mBatteryBroadcast;
private BatteryHistoryChart mChart;
private BatteryStatsHelper mHelper;
public BatteryHistoryPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void performClick(PreferenceScreen preferenceScreen) {
if (!isEnabled()) {
return;
}
mHelper.storeStatsHistoryInFile(BATTERY_HISTORY_FILE);
Bundle args = new Bundle();
args.putString(BatteryHistoryDetail.EXTRA_STATS, BATTERY_HISTORY_FILE);
args.putParcelable(BatteryHistoryDetail.EXTRA_BROADCAST,
mHelper.getBatteryBroadcast());
if (getContext() instanceof SettingsActivity) {
SettingsActivity sa = (SettingsActivity) getContext();
sa.startPreferencePanel(BatteryHistoryDetail.class.getName(), args,
R.string.history_details_title, null, null, 0);
}
}
public void setStats(BatteryStatsHelper batteryStats) {
// Clear out the chart to receive new data.
mChart = null;
mHelper = batteryStats;
mStats = batteryStats.getStats();
mBatteryBroadcast = batteryStats.getBatteryBroadcast();
if (getLayoutResource() != R.layout.battery_history_chart) {
// Now we should have some data, set the layout we want.
setLayoutResource(R.layout.battery_history_chart);
}
notifyChanged();
}
BatteryStats getStats() {
return mStats;
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
if (mStats == null) {
return;
}
BatteryHistoryChart chart = (BatteryHistoryChart) view.findViewById(
R.id.battery_history_chart);
if (mChart == null) {
// First time: use and initialize this chart.
chart.setStats(mStats, mBatteryBroadcast);
mChart = chart;
} else {
// All future times: forget the newly inflated chart, re-use the
// already initialized chart from last time.
ViewGroup parent = (ViewGroup) chart.getParent();
int index = parent.indexOfChild(chart);
parent.removeViewAt(index);
if (mChart.getParent() != null) {
((ViewGroup) mChart.getParent()).removeView(mChart);
}
parent.addView(mChart, index);
}
}
}
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