1 files changed, 61 insertions, 0 deletions
diff --git a/src/com/android/launcher3/compat/WallpaperManagerCompat.java b/src/com/android/launcher3/compat/WallpaperManagerCompat.java
new file mode 100644
index 000000000..cbcabdf9b
--- /dev/null
+++ b/src/com/android/launcher3/compat/WallpaperManagerCompat.java
@@ -0,0 +1,61 @@
+/*
+ * 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.isAtLeastO()) {
+                    try {
+                        sInstance = new WallpaperManagerCompatVOMR1(context);
+                    } catch (Exception 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);
+    }
+}