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/**
* Copyright (C) 2018 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 android.app.usage;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Contains usage statistics for an event type for a specific
* time range.
*/
public final class EventStats implements Parcelable {
/**
* {@hide}
*/
public int mEventType;
/**
* {@hide}
*/
public long mBeginTimeStamp;
/**
* {@hide}
*/
public long mEndTimeStamp;
/**
* {@hide}
*/
public long mLastEventTime;
/**
* {@hide}
*/
public long mTotalTime;
/**
* {@hide}
*/
public int mCount;
/**
* {@hide}
*/
public EventStats() {
}
public EventStats(EventStats stats) {
mEventType = stats.mEventType;
mBeginTimeStamp = stats.mBeginTimeStamp;
mEndTimeStamp = stats.mEndTimeStamp;
mLastEventTime = stats.mLastEventTime;
mTotalTime = stats.mTotalTime;
mCount = stats.mCount;
}
/**
* Return the type of event this is usage for. May be one of the event
* constants in {@link UsageEvents.Event}.
*/
public int getEventType() {
return mEventType;
}
/**
* Get the beginning of the time range this {@link android.app.usage.EventStats} represents,
* measured in milliseconds since the epoch.
* <p/>
* See {@link System#currentTimeMillis()}.
*/
public long getFirstTimeStamp() {
return mBeginTimeStamp;
}
/**
* Get the end of the time range this {@link android.app.usage.EventStats} represents,
* measured in milliseconds since the epoch.
* <p/>
* See {@link System#currentTimeMillis()}.
*/
public long getLastTimeStamp() {
return mEndTimeStamp;
}
/**
* Get the last time this event triggered, measured in milliseconds since the epoch.
* <p/>
* See {@link System#currentTimeMillis()}.
*/
public long getLastEventTime() {
return mLastEventTime;
}
/**
* Return the number of times that this event occurred over the interval.
*/
public int getCount() {
return mCount;
}
/**
* Get the total time this event was active, measured in milliseconds.
*/
public long getTotalTime() {
return mTotalTime;
}
/**
* Add the statistics from the right {@link EventStats} to the left. The event type for
* both {@link UsageStats} objects must be the same.
* @param right The {@link EventStats} object to merge into this one.
* @throws java.lang.IllegalArgumentException if the event types of the two
* {@link UsageStats} objects are different.
*/
public void add(EventStats right) {
if (mEventType != right.mEventType) {
throw new IllegalArgumentException("Can't merge EventStats for event #"
+ mEventType + " with EventStats for event #" + right.mEventType);
}
// We use the mBeginTimeStamp due to a bug where UsageStats files can overlap with
// regards to their mEndTimeStamp.
if (right.mBeginTimeStamp > mBeginTimeStamp) {
mLastEventTime = Math.max(mLastEventTime, right.mLastEventTime);
}
mBeginTimeStamp = Math.min(mBeginTimeStamp, right.mBeginTimeStamp);
mEndTimeStamp = Math.max(mEndTimeStamp, right.mEndTimeStamp);
mTotalTime += right.mTotalTime;
mCount += right.mCount;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mEventType);
dest.writeLong(mBeginTimeStamp);
dest.writeLong(mEndTimeStamp);
dest.writeLong(mLastEventTime);
dest.writeLong(mTotalTime);
dest.writeInt(mCount);
}
public static final @android.annotation.NonNull Creator<EventStats> CREATOR = new Creator<EventStats>() {
@Override
public EventStats createFromParcel(Parcel in) {
EventStats stats = new EventStats();
stats.mEventType = in.readInt();
stats.mBeginTimeStamp = in.readLong();
stats.mEndTimeStamp = in.readLong();
stats.mLastEventTime = in.readLong();
stats.mTotalTime = in.readLong();
stats.mCount = in.readInt();
return stats;
}
@Override
public EventStats[] newArray(int size) {
return new EventStats[size];
}
};
}
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