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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.annotation.TargetApi;
import android.app.WallpaperManager;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.support.annotation.Nullable;
import android.util.Log;
import android.util.Pair;
import android.util.SparseIntArray;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.List;
@TargetApi(Build.VERSION_CODES.O)
public class WallpaperManagerCompatVOMR1 extends WallpaperManagerCompat {
private static final String TAG = "WMCompatVOMR1";
private final WallpaperManager mWm;
private final Class mOCLClass;
private final Method mAddOCLMethod;
private final Method mWCGetMethod;
private final Method mWCGetColorsMethod;
private final Method mWCSupportsDarkTextMethod;
WallpaperManagerCompatVOMR1(Context context) throws Exception {
mWm = context.getSystemService(WallpaperManager.class);
mOCLClass = Class.forName("android.app.WallpaperManager$OnColorsChangedListener");
mAddOCLMethod = WallpaperManager.class.getDeclaredMethod(
"addOnColorsChangedListener", mOCLClass);
mWCGetMethod = WallpaperManager.class.getDeclaredMethod("getWallpaperColors", int.class);
Class wallpaperColorsClass = mWCGetMethod.getReturnType();
mWCGetColorsMethod = wallpaperColorsClass.getDeclaredMethod("getColors");
mWCSupportsDarkTextMethod = wallpaperColorsClass.getDeclaredMethod("supportsDarkText");
}
@Nullable
@Override
public WallpaperColorsCompat getWallpaperColors(int which) {
try {
return convertColorsObject(mWCGetMethod.invoke(mWm, which));
} catch (Exception e) {
Log.e(TAG, "Error calling wallpaper API", e);
return null;
}
}
@Override
public void addOnColorsChangedListener(final OnColorsChangedListenerCompat listener) {
Object onChangeListener = Proxy.newProxyInstance(
WallpaperManager.class.getClassLoader(),
new Class[]{mOCLClass},
new InvocationHandler() {
@Override
public Object invoke(Object o, Method method, Object[] objects)
throws Throwable {
String methodName = method.getName();
if ("onColorsChanged".equals(methodName)) {
listener.onColorsChanged(
convertColorsObject(objects[0]), (Integer) objects[1]);
} else if ("toString".equals(methodName)) {
return listener.toString();
}
return null;
}
});
try {
mAddOCLMethod.invoke(mWm, onChangeListener);
} catch (Exception e) {
Log.e(TAG, "Error calling wallpaper API", e);
}
}
private WallpaperColorsCompat convertColorsObject(Object colors) throws Exception {
if (colors == null) {
return null;
}
List<Pair<Color, Integer>> list = (List) mWCGetColorsMethod.invoke(colors);
boolean supportsDarkText = (Boolean) mWCSupportsDarkTextMethod.invoke(colors);
SparseIntArray colorMap = new SparseIntArray(list.size());
for (Pair<Color, Integer> color : list) {
colorMap.put(color.first.toArgb(), color.second);
}
return new WallpaperColorsCompat(colorMap, supportsDarkText);
}
}
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