1 files changed, 48 insertions, 0 deletions
diff --git a/packages/SystemUI/src/com/android/systemui/ContextComponentResolver.java b/packages/SystemUI/src/com/android/systemui/ContextComponentResolver.java
new file mode 100644
index 000000000000..09bccd993f39
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/ContextComponentResolver.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 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 com.android.systemui;
+
+import java.util.Map;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+
+/**
+ * Used during Service and Activity instantiation to make them injectable.
+ */
+public class ContextComponentResolver implements ContextComponentHelper {
+    private final Map<Class<?>, Provider<Object>> mCreators;
+
+    @Inject
+    ContextComponentResolver(Map<Class<?>, Provider<Object>> creators) {
+        mCreators = creators;
+    }
+
+    /**
+     * Looks up the class name to see if Dagger has an instance of it.
+     */
+    @Override
+    public <T> T resolve(String className) {
+        for (Map.Entry<Class<?>, Provider<Object>> p : mCreators.entrySet()) {
+            if (p.getKey().getName().equals(className)) {
+                return (T) p.getValue().get();
+            }
+        }
+
+        return null;
+    }
+}