1 /* 2 * Copyright (C) 2012 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.settings.accounts; 18 19 import android.accounts.Account; 20 import android.accounts.AccountManager; 21 import android.accounts.AuthenticatorDescription; 22 import android.content.Context; 23 import android.content.pm.PackageManager; 24 import android.content.res.Resources; 25 import android.graphics.drawable.Drawable; 26 import android.util.Log; 27 28 import java.util.ArrayList; 29 import java.util.HashMap; 30 import java.util.Map; 31 32 public class AuthenticatorHelper { 33 34 private static final String TAG = "AuthenticatorHelper"; 35 private Map<String, AuthenticatorDescription> mTypeToAuthDescription 36 = new HashMap<String, AuthenticatorDescription>(); 37 private AuthenticatorDescription[] mAuthDescs; 38 private ArrayList<String> mEnabledAccountTypes = new ArrayList<String>(); 39 private Map<String, Drawable> mAccTypeIconCache = new HashMap<String, Drawable>(); 40 41 public AuthenticatorHelper() { 42 } 43 44 public String[] getEnabledAccountTypes() { 45 return mEnabledAccountTypes.toArray(new String[mEnabledAccountTypes.size()]); 46 } 47 48 /** 49 * Gets an icon associated with a particular account type. If none found, return null. 50 * @param accountType the type of account 51 * @return a drawable for the icon or null if one cannot be found. 52 */ 53 public Drawable getDrawableForType(Context context, final String accountType) { 54 Drawable icon = null; 55 if (mAccTypeIconCache.containsKey(accountType)) { 56 return mAccTypeIconCache.get(accountType); 57 } 58 if (mTypeToAuthDescription.containsKey(accountType)) { 59 try { 60 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType); 61 Context authContext = context.createPackageContext(desc.packageName, 0); 62 icon = authContext.getResources().getDrawable(desc.iconId); 63 mAccTypeIconCache.put(accountType, icon); 64 } catch (PackageManager.NameNotFoundException e) { 65 } catch (Resources.NotFoundException e) { 66 } 67 } 68 if (icon == null) { 69 icon = context.getPackageManager().getDefaultActivityIcon(); 70 } 71 return icon; 72 } 73 74 /** 75 * Gets the label associated with a particular account type. If none found, return null. 76 * @param accountType the type of account 77 * @return a CharSequence for the label or null if one cannot be found. 78 */ 79 public CharSequence getLabelForType(Context context, final String accountType) { 80 CharSequence label = null; 81 if (mTypeToAuthDescription.containsKey(accountType)) { 82 try { 83 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType); 84 Context authContext = context.createPackageContext(desc.packageName, 0); 85 label = authContext.getResources().getText(desc.labelId); 86 } catch (PackageManager.NameNotFoundException e) { 87 Log.w(TAG, "No label name for account type " + accountType); 88 } catch (Resources.NotFoundException e) { 89 Log.w(TAG, "No label icon for account type " + accountType); 90 } 91 } 92 return label; 93 } 94 95 /** 96 * Updates provider icons. Subclasses should call this in onCreate() 97 * and update any UI that depends on AuthenticatorDescriptions in onAuthDescriptionsUpdated(). 98 */ 99 public void updateAuthDescriptions(Context context) { 100 mAuthDescs = AccountManager.get(context).getAuthenticatorTypes(); 101 for (int i = 0; i < mAuthDescs.length; i++) { 102 mTypeToAuthDescription.put(mAuthDescs[i].type, mAuthDescs[i]); 103 } 104 } 105 106 public void onAccountsUpdated(Context context, Account[] accounts) { 107 if (accounts == null) { 108 accounts = AccountManager.get(context).getAccounts(); 109 } 110 mEnabledAccountTypes.clear(); 111 mAccTypeIconCache.clear(); 112 for (Account account: accounts) { 113 if (!mEnabledAccountTypes.contains(account.type)) { 114 mEnabledAccountTypes.add(account.type); 115 } 116 } 117 } 118 119 public boolean containsAccountType(String accountType) { 120 return mTypeToAuthDescription.containsKey(accountType); 121 } 122 123 public AuthenticatorDescription getAccountTypeDescription(String accountType) { 124 return mTypeToAuthDescription.get(accountType); 125 } 126 127 public boolean hasAccountPreferences(final String accountType) { 128 if (containsAccountType(accountType)) { 129 AuthenticatorDescription desc = getAccountTypeDescription(accountType); 130 if (desc != null && desc.accountPreferencesId != 0) { 131 return true; 132 } 133 } 134 return false; 135 } 136 } 137