1 package com.xtremelabs.robolectric.internal; 2 3 import android.app.Application; 4 import android.content.Context; 5 import com.xtremelabs.robolectric.shadows.ShadowApplication; 6 7 import static com.xtremelabs.robolectric.Robolectric.newInstanceOf; 8 import static com.xtremelabs.robolectric.Robolectric.shadowOf; 9 10 public abstract class AppSingletonizer<T> { 11 private Class<T> clazz; 12 13 public AppSingletonizer(Class<T> clazz) { 14 this.clazz = clazz; 15 } 16 17 synchronized public T getInstance(Context context) { 18 Application applicationContext = (Application) context.getApplicationContext(); 19 ShadowApplication shadowApplication = (ShadowApplication) shadowOf(applicationContext); 20 T instance = get(shadowApplication); 21 if (instance == null) { 22 instance = createInstance(applicationContext); 23 set(shadowApplication, instance); 24 } 25 return instance; 26 } 27 28 protected abstract T get(ShadowApplication shadowApplication); 29 30 protected abstract void set(ShadowApplication shadowApplication, T instance); 31 32 protected T createInstance(Application applicationContext) { 33 return newInstanceOf(clazz); 34 } 35 } 36
