1 /* 2 * Copyright (C) 2008 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.internal.policy; 18 19 import android.content.Context; 20 import android.view.FallbackEventHandler; 21 import android.view.LayoutInflater; 22 import android.view.Window; 23 import android.view.WindowManagerPolicy; 24 25 import com.android.internal.policy.IPolicy; 26 27 /** 28 * {@hide} 29 */ 30 31 public final class PolicyManager { 32 private static final String POLICY_IMPL_CLASS_NAME = 33 "com.android.internal.policy.impl.Policy"; 34 35 private static final IPolicy sPolicy; 36 37 static { 38 // Pull in the actual implementation of the policy at run-time 39 try { 40 Class policyClass = Class.forName(POLICY_IMPL_CLASS_NAME); 41 sPolicy = (IPolicy)policyClass.newInstance(); 42 } catch (ClassNotFoundException ex) { 43 throw new RuntimeException( 44 POLICY_IMPL_CLASS_NAME + " could not be loaded", ex); 45 } catch (InstantiationException ex) { 46 throw new RuntimeException( 47 POLICY_IMPL_CLASS_NAME + " could not be instantiated", ex); 48 } catch (IllegalAccessException ex) { 49 throw new RuntimeException( 50 POLICY_IMPL_CLASS_NAME + " could not be instantiated", ex); 51 } 52 } 53 54 // Cannot instantiate this class 55 private PolicyManager() {} 56 57 // The static methods to spawn new policy-specific objects 58 public static Window makeNewWindow(Context context) { 59 return sPolicy.makeNewWindow(context); 60 } 61 62 public static LayoutInflater makeNewLayoutInflater(Context context) { 63 return sPolicy.makeNewLayoutInflater(context); 64 } 65 66 public static WindowManagerPolicy makeNewWindowManager() { 67 return sPolicy.makeNewWindowManager(); 68 } 69 70 public static FallbackEventHandler makeNewFallbackEventHandler(Context context) { 71 return sPolicy.makeNewFallbackEventHandler(context); 72 } 73 } 74
