| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.tv.util.account; |
| |
| import android.accounts.Account; |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.preference.PreferenceManager; |
| import android.support.annotation.Nullable; |
| import com.android.tv.common.dagger.annotations.ApplicationContext; |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| /** Helper methods for getting and selecting a user account. */ |
| @Singleton |
| public class AccountHelperImpl implements com.android.tv.util.account.AccountHelper { |
| private static final String SELECTED_ACCOUNT = "android.tv.livechannels.selected_account"; |
| |
| protected final Context mContext; |
| private final SharedPreferences mDefaultPreferences; |
| |
| @Nullable private Account mSelectedAccount; |
| |
| @Inject |
| public AccountHelperImpl(@ApplicationContext Context context) { |
| mContext = context.getApplicationContext(); |
| mDefaultPreferences = PreferenceManager.getDefaultSharedPreferences(mContext); |
| } |
| |
| /** Returns the currently selected account or {@code null} if none is selected. */ |
| @Override |
| @Nullable |
| public final Account getSelectedAccount() { |
| String accountId = mDefaultPreferences.getString(SELECTED_ACCOUNT, null); |
| if (accountId == null) { |
| return null; |
| } |
| if (mSelectedAccount == null || !mSelectedAccount.name.equals((accountId))) { |
| mSelectedAccount = null; |
| for (Account account : getEligibleAccounts()) { |
| if (account.name.equals(accountId)) { |
| mSelectedAccount = account; |
| break; |
| } |
| } |
| } |
| return mSelectedAccount; |
| } |
| |
| /** |
| * Returns all eligible accounts. |
| * |
| * <p>Override this method to return the accounts needed. |
| */ |
| protected Account[] getEligibleAccounts() { |
| return new Account[0]; |
| } |
| |
| /** |
| * Selects the first account available. |
| * |
| * @return selected account or {@code null} if none is selected. |
| */ |
| @Override |
| @Nullable |
| public final Account selectFirstAccount() { |
| Account account = getFirstEligibleAccount(); |
| if (account != null) { |
| selectAccount(account); |
| } |
| return account; |
| } |
| |
| /** |
| * Gets the first account eligible. |
| * |
| * @return first account or {@code null} if none is eligible. |
| */ |
| @Override |
| @Nullable |
| public final Account getFirstEligibleAccount() { |
| Account[] accounts = getEligibleAccounts(); |
| return accounts.length == 0 ? null : accounts[0]; |
| } |
| |
| /** Sets the given account as the selected account. */ |
| private void selectAccount(Account account) { |
| SharedPreferences defaultPreferences = |
| PreferenceManager.getDefaultSharedPreferences(mContext); |
| defaultPreferences.edit().putString(SELECTED_ACCOUNT, account.name).commit(); |
| } |
| |
| @Override |
| public void init() { |
| // do nothing. |
| } |
| } |