1/* 2 * Copyright (C) 2009 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 17package android.accounts; 18 19import android.content.Context; 20import android.content.pm.PackageManager; 21import android.content.pm.RegisteredServicesCache; 22import android.content.pm.XmlSerializerAndParser; 23import android.content.res.Resources; 24import android.content.res.TypedArray; 25import android.text.TextUtils; 26import android.util.AttributeSet; 27 28import org.xmlpull.v1.XmlPullParser; 29import org.xmlpull.v1.XmlPullParserException; 30import org.xmlpull.v1.XmlSerializer; 31 32import java.io.IOException; 33 34/** 35 * A cache of services that export the {@link IAccountAuthenticator} interface. This cache 36 * is built by interrogating the {@link PackageManager} and is updated as packages are added, 37 * removed and changed. The authenticators are referred to by their account type and 38 * are made available via the {@link RegisteredServicesCache#getServiceInfo} method. 39 * @hide 40 */ 41/* package private */ class AccountAuthenticatorCache 42 extends RegisteredServicesCache<AuthenticatorDescription> 43 implements IAccountAuthenticatorCache { 44 private static final String TAG = "Account"; 45 private static final MySerializer sSerializer = new MySerializer(); 46 47 public AccountAuthenticatorCache(Context context) { 48 super(context, AccountManager.ACTION_AUTHENTICATOR_INTENT, 49 AccountManager.AUTHENTICATOR_META_DATA_NAME, 50 AccountManager.AUTHENTICATOR_ATTRIBUTES_NAME, sSerializer); 51 } 52 53 public AuthenticatorDescription parseServiceAttributes(Resources res, 54 String packageName, AttributeSet attrs) { 55 TypedArray sa = res.obtainAttributes(attrs, 56 com.android.internal.R.styleable.AccountAuthenticator); 57 try { 58 final String accountType = 59 sa.getString(com.android.internal.R.styleable.AccountAuthenticator_accountType); 60 final int labelId = sa.getResourceId( 61 com.android.internal.R.styleable.AccountAuthenticator_label, 0); 62 final int iconId = sa.getResourceId( 63 com.android.internal.R.styleable.AccountAuthenticator_icon, 0); 64 final int smallIconId = sa.getResourceId( 65 com.android.internal.R.styleable.AccountAuthenticator_smallIcon, 0); 66 final int prefId = sa.getResourceId( 67 com.android.internal.R.styleable.AccountAuthenticator_accountPreferences, 0); 68 final boolean customTokens = sa.getBoolean( 69 com.android.internal.R.styleable.AccountAuthenticator_customTokens, false); 70 if (TextUtils.isEmpty(accountType)) { 71 return null; 72 } 73 return new AuthenticatorDescription(accountType, packageName, labelId, iconId, 74 smallIconId, prefId, customTokens); 75 } finally { 76 sa.recycle(); 77 } 78 } 79 80 private static class MySerializer implements XmlSerializerAndParser<AuthenticatorDescription> { 81 public void writeAsXml(AuthenticatorDescription item, XmlSerializer out) 82 throws IOException { 83 out.attribute(null, "type", item.type); 84 } 85 86 public AuthenticatorDescription createFromXml(XmlPullParser parser) 87 throws IOException, XmlPullParserException { 88 return AuthenticatorDescription.newKey(parser.getAttributeValue(null, "type")); 89 } 90 } 91} 92