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/*
* Copyright (C) 2017 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.launcher3.compat;
import android.content.Context;
import android.support.annotation.Nullable;
import com.android.launcher3.Utilities;
public abstract class WallpaperManagerCompat {
private static final Object sInstanceLock = new Object();
private static WallpaperManagerCompat sInstance;
public static WallpaperManagerCompat getInstance(Context context) {
synchronized (sInstanceLock) {
if (sInstance == null) {
context = context.getApplicationContext();
if (Utilities.ATLEAST_OREO) {
try {
sInstance = new WallpaperManagerCompatVOMR1(context);
} catch (Throwable e) {
// The wallpaper APIs do not yet exist
}
}
if (sInstance == null) {
sInstance = new WallpaperManagerCompatVL(context);
}
}
return sInstance;
}
}
public abstract @Nullable WallpaperColorsCompat getWallpaperColors(int which);
public abstract void addOnColorsChangedListener(OnColorsChangedListenerCompat listener);
/**
* Interface definition for a callback to be invoked when colors change on a wallpaper.
*/
public interface OnColorsChangedListenerCompat {
void onColorsChanged(WallpaperColorsCompat colors, int which);
}
}
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