1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 15 package com.android.systemui; 16 17 import android.content.res.Configuration; 18 import android.provider.Settings; 19 import android.util.Log; 20 21 import com.android.systemui.R; 22 import com.android.systemui.SystemUI; 23 24 import java.io.FileDescriptor; 25 import java.io.PrintWriter; 26 27 /** 28 * Ensure a single status bar service implementation is running at all times, using the in-process 29 * implementation according to the product config. 30 */ 31 public class SystemBars extends SystemUI { 32 private static final String TAG = "SystemBars"; 33 private static final boolean DEBUG = false; 34 private static final int WAIT_FOR_BARS_TO_DIE = 500; 35 36 // in-process fallback implementation, per the product config 37 private SystemUI mStatusBar; 38 39 @Override start()40 public void start() { 41 if (DEBUG) Log.d(TAG, "start"); 42 createStatusBarFromConfig(); 43 } 44 45 @Override dump(FileDescriptor fd, PrintWriter pw, String[] args)46 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 47 if (mStatusBar != null) { 48 mStatusBar.dump(fd, pw, args); 49 } 50 } 51 createStatusBarFromConfig()52 private void createStatusBarFromConfig() { 53 if (DEBUG) Log.d(TAG, "createStatusBarFromConfig"); 54 final String clsName = mContext.getString(R.string.config_statusBarComponent); 55 if (clsName == null || clsName.length() == 0) { 56 throw andLog("No status bar component configured", null); 57 } 58 Class<?> cls = null; 59 try { 60 cls = mContext.getClassLoader().loadClass(clsName); 61 } catch (Throwable t) { 62 throw andLog("Error loading status bar component: " + clsName, t); 63 } 64 try { 65 mStatusBar = (SystemUI) cls.newInstance(); 66 } catch (Throwable t) { 67 throw andLog("Error creating status bar component: " + clsName, t); 68 } 69 mStatusBar.mContext = mContext; 70 mStatusBar.mComponents = mComponents; 71 mStatusBar.start(); 72 if (DEBUG) Log.d(TAG, "started " + mStatusBar.getClass().getSimpleName()); 73 } 74 andLog(String msg, Throwable t)75 private RuntimeException andLog(String msg, Throwable t) { 76 Log.w(TAG, msg, t); 77 throw new RuntimeException(msg, t); 78 } 79 } 80