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/*
* Copyright 2019 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.servertransaction;
import static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER;
import android.app.ActivityTaskManager;
import android.app.ClientTransactionHandler;
import android.os.IBinder;
import android.os.Parcel;
import android.os.RemoteException;
import android.os.Trace;
/**
* Top resumed activity changed callback.
* @hide
*/
public class TopResumedActivityChangeItem extends ClientTransactionItem {
private boolean mOnTop;
@Override
public void execute(ClientTransactionHandler client, IBinder token,
PendingTransactionActions pendingActions) {
Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, "topResumedActivityChangeItem");
client.handleTopResumedActivityChanged(token, mOnTop, "topResumedActivityChangeItem");
Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER);
}
@Override
public void postExecute(ClientTransactionHandler client, IBinder token,
PendingTransactionActions pendingActions) {
if (mOnTop) {
return;
}
// The loss of top resumed state can always be reported immediately in postExecute
// because only three cases are possible:
// 1. Activity is in RESUMED state now and it just handled the callback in #execute().
// 2. Activity wasn't RESUMED yet, which means that it didn't receive the top state yet.
// 3. Activity is PAUSED or in other lifecycle state after PAUSED. In this case top resumed
// state loss was already called right before pausing.
try {
ActivityTaskManager.getService().activityTopResumedStateLost();
} catch (RemoteException ex) {
throw ex.rethrowFromSystemServer();
}
}
// ObjectPoolItem implementation
private TopResumedActivityChangeItem() {}
/** Obtain an instance initialized with provided params. */
public static TopResumedActivityChangeItem obtain(boolean onTop) {
TopResumedActivityChangeItem instance =
ObjectPool.obtain(TopResumedActivityChangeItem.class);
if (instance == null) {
instance = new TopResumedActivityChangeItem();
}
instance.mOnTop = onTop;
return instance;
}
@Override
public void recycle() {
mOnTop = false;
ObjectPool.recycle(this);
}
// Parcelable implementation
/** Write to Parcel. */
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeBoolean(mOnTop);
}
/** Read from Parcel. */
private TopResumedActivityChangeItem(Parcel in) {
mOnTop = in.readBoolean();
}
public static final @android.annotation.NonNull Creator<TopResumedActivityChangeItem> CREATOR =
new Creator<TopResumedActivityChangeItem>() {
public TopResumedActivityChangeItem createFromParcel(Parcel in) {
return new TopResumedActivityChangeItem(in);
}
public TopResumedActivityChangeItem[] newArray(int size) {
return new TopResumedActivityChangeItem[size];
}
};
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final TopResumedActivityChangeItem other = (TopResumedActivityChangeItem) o;
return mOnTop == other.mOnTop;
}
@Override
public int hashCode() {
int result = 17;
result = 31 * result + (mOnTop ? 1 : 0);
return result;
}
@Override
public String toString() {
return "TopResumedActivityChangeItem{onTop=" + mOnTop + "}";
}
}
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