1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui; 18 19 import android.content.Context; 20 import android.content.res.Configuration; 21 22 import java.io.FileDescriptor; 23 import java.io.PrintWriter; 24 import java.util.Map; 25 26 public abstract class SystemUI { 27 public Context mContext; 28 public Map<Class<?>, Object> mComponents; 29 30 public abstract void start(); 31 32 protected void onConfigurationChanged(Configuration newConfig) { 33 } 34 35 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 36 } 37 38 @SuppressWarnings("unchecked") 39 public <T> T getComponent(Class<T> interfaceType) { 40 return (T) (mComponents != null ? mComponents.get(interfaceType) : null); 41 } 42 43 public <T, C extends T> void putComponent(Class<T> interfaceType, C component) { 44 if (mComponents != null) { 45 mComponents.put(interfaceType, component); 46 } 47 } 48 } 49
