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/*
* Copyright (C) 2014 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.view;
import android.graphics.Rect;
import android.os.IBinder;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Pools;
import java.util.ArrayList;
import java.util.List;
/**
* This class represents information about a window from the
* window manager to another part of the system.
*
* @hide
*/
public class WindowInfo implements Parcelable {
private static final int MAX_POOL_SIZE = 10;
private static final Pools.SynchronizedPool<WindowInfo> sPool =
new Pools.SynchronizedPool<WindowInfo>(MAX_POOL_SIZE);
public int type;
public int layer;
public IBinder token;
public IBinder parentToken;
public boolean focused;
public final Rect boundsInScreen = new Rect();
public List<IBinder> childTokens;
private WindowInfo() {
/* do nothing - hide constructor */
}
public static WindowInfo obtain() {
WindowInfo window = sPool.acquire();
if (window == null) {
window = new WindowInfo();
}
return window;
}
public static WindowInfo obtain(WindowInfo other) {
WindowInfo window = obtain();
window.type = other.type;
window.layer = other.layer;
window.token = other.token;
window.parentToken = other.parentToken;
window.focused = other.focused;
window.boundsInScreen.set(other.boundsInScreen);
if (other.childTokens != null && !other.childTokens.isEmpty()) {
if (window.childTokens == null) {
window.childTokens = new ArrayList<IBinder>(other.childTokens);
} else {
window.childTokens.addAll(other.childTokens);
}
}
return window;
}
public void recycle() {
clear();
sPool.release(this);
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeInt(type);
parcel.writeInt(layer);
parcel.writeStrongBinder(token);
parcel.writeStrongBinder(parentToken);
parcel.writeInt(focused ? 1 : 0);
boundsInScreen.writeToParcel(parcel, flags);
if (childTokens != null && !childTokens.isEmpty()) {
parcel.writeInt(1);
parcel.writeBinderList(childTokens);
} else {
parcel.writeInt(0);
}
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("WindowInfo[");
builder.append("type=").append(type);
builder.append(", layer=").append(layer);
builder.append(", token=").append(token);
builder.append(", bounds=").append(boundsInScreen);
builder.append(", parent=").append(parentToken);
builder.append(", focused=").append(focused);
builder.append(", children=").append(childTokens);
builder.append(']');
return builder.toString();
}
private void initFromParcel(Parcel parcel) {
type = parcel.readInt();
layer = parcel.readInt();
token = parcel.readStrongBinder();
parentToken = parcel.readStrongBinder();
focused = (parcel.readInt() == 1);
boundsInScreen.readFromParcel(parcel);
final boolean hasChildren = (parcel.readInt() == 1);
if (hasChildren) {
if (childTokens == null) {
childTokens = new ArrayList<IBinder>();
}
parcel.readBinderList(childTokens);
}
}
private void clear() {
type = 0;
layer = 0;
token = null;
parentToken = null;
focused = false;
boundsInScreen.setEmpty();
if (childTokens != null) {
childTokens.clear();
}
}
public static final Parcelable.Creator<WindowInfo> CREATOR =
new Creator<WindowInfo>() {
@Override
public WindowInfo createFromParcel(Parcel parcel) {
WindowInfo window = obtain();
window.initFromParcel(parcel);
return window;
}
@Override
public WindowInfo[] newArray(int size) {
return new WindowInfo[size];
}
};
}
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