src/com/android/car/settings/accounts/AccountListPreferenceController.java - platform/packages/apps/Car/Settings - Git at Google

 /*
  * Copyright (C) 2018 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.car.settings.accounts;

 import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.car.drivingstate.CarUxRestrictions;
 import android.car.userlib.CarUserManagerHelper;
 import android.content.Context;
 import android.content.pm.UserInfo;
 import android.graphics.drawable.Drawable;
 import android.os.UserHandle;

 import androidx.collection.ArrayMap;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceCategory;

 import com.android.car.settings.R;
 import com.android.car.settings.common.FragmentController;
 import com.android.car.settings.common.PreferenceController;
 import com.android.settingslib.accounts.AuthenticatorHelper;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;

 /**
  * Controller for listing accounts.
  *
  * <p>Largely derived from {@link com.android.settings.accounts.AccountPreferenceController}
  */
 public class AccountListPreferenceController extends
         PreferenceController<PreferenceCategory> implements
         AuthenticatorHelper.OnAccountsUpdateListener,
         CarUserManagerHelper.OnUsersUpdateListener {
     private static final String NO_ACCOUNT_PREF_KEY = "no_accounts_added";

     private final UserInfo mUserInfo;
     private final CarUserManagerHelper mCarUserManagerHelper;
     private final ArrayMap<String, Preference> mPreferences = new ArrayMap<>();
     private AuthenticatorHelper mAuthenticatorHelper;
     private String[] mAuthorities;

     public AccountListPreferenceController(Context context, String preferenceKey,
             FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
         super(context, preferenceKey, fragmentController, uxRestrictions);
         mCarUserManagerHelper = new CarUserManagerHelper(context);
         mUserInfo = mCarUserManagerHelper.getCurrentProcessUserInfo();
         mAuthenticatorHelper = new AuthenticatorHelper(context,
                 mUserInfo.getUserHandle(), /* listener= */ this);
     }

     /** Sets the account authorities that are available. */
     public void setAuthorities(String[] authorities) {
         mAuthorities = authorities;
     }

     @Override
     protected Class<PreferenceCategory> getPreferenceType() {
         return PreferenceCategory.class;
     }

     @Override
     protected void updateState(PreferenceCategory preference) {
         forceUpdateAccountsCategory();
     }

     @Override
     protected int getAvailabilityStatus() {
         return mCarUserManagerHelper.canCurrentProcessModifyAccounts() ? AVAILABLE
                 : DISABLED_FOR_USER;
     }

     /**
      * Registers the account update and user update callbacks.
      */
     @Override
     protected void onStartInternal() {
         mAuthenticatorHelper.listenToAccountUpdates();
         mCarUserManagerHelper.registerOnUsersUpdateListener(this);
     }

     /**
      * Unregisters the account update and user update callbacks.
      */
     @Override
     protected void onStopInternal() {
         mAuthenticatorHelper.stopListeningToAccountUpdates();
         mCarUserManagerHelper.unregisterOnUsersUpdateListener(this);
     }

     @Override
     public void onAccountsUpdate(UserHandle userHandle) {
         if (userHandle.equals(mUserInfo.getUserHandle())) {
             forceUpdateAccountsCategory();
         }
     }

     @Override
     public void onUsersUpdate() {
         forceUpdateAccountsCategory();
     }

     private boolean onAccountPreferenceClicked(AccountPreference preference) {
         // Show the account's details when an account is clicked on.
         getFragmentController().launchFragment(AccountDetailsFragment.newInstance(
                 preference.getAccount(), preference.getLabel(), mUserInfo));
         return true;
     }

     /** Forces a refresh of the account preferences. */
     private void forceUpdateAccountsCategory() {
         // Set the category title and include the user's name
         getPreference().setTitle(
                 getContext().getString(R.string.account_list_title, mUserInfo.name));

         // Recreate the authentication helper to refresh the list of enabled accounts
         mAuthenticatorHelper = new AuthenticatorHelper(getContext(), mUserInfo.getUserHandle(),
                 this);

         Set<String> preferencesToRemove = new HashSet<>(mPreferences.keySet());
         List<? extends Preference> preferences = getAccountPreferences(preferencesToRemove);
         // Add all preferences that aren't already shown. Manually set the order so that existing
         // preferences are reordered correctly.
         for (int i = 0; i < preferences.size(); i++) {
             Preference pref = preferences.get(i);
             pref.setOrder(i);
             mPreferences.put(pref.getKey(), pref);
             getPreference().addPreference(pref);
         }

         for (String key : preferencesToRemove) {
             getPreference().removePreference(mPreferences.get(key));
             mPreferences.remove(key);
         }
     }

     /**
      * Returns a list of preferences corresponding to the accounts for the current user.
      *
      * <p> Derived from
      * {@link com.android.settings.accounts.AccountPreferenceController#getAccountTypePreferences}
      *
      * @param preferencesToRemove the current preferences shown; only preferences to be removed will
      *                            remain after method execution
      */
     private List<? extends Preference> getAccountPreferences(
             Set<String> preferencesToRemove) {
         String[] accountTypes = mAuthenticatorHelper.getEnabledAccountTypes();
         ArrayList<AccountPreference> accountPreferences =
                 new ArrayList<>(accountTypes.length);

         for (int i = 0; i < accountTypes.length; i++) {
             String accountType = accountTypes[i];
             // Skip showing any account that does not have any of the requested authorities
             if (!accountTypeHasAnyRequestedAuthorities(accountType)) {
                 continue;
             }
             CharSequence label = mAuthenticatorHelper.getLabelForType(getContext(), accountType);
             if (label == null) {
                 continue;
             }

             Account[] accounts = AccountManager.get(getContext())
                     .getAccountsByTypeAsUser(accountType, mUserInfo.getUserHandle());
             Drawable icon = mAuthenticatorHelper.getDrawableForType(getContext(), accountType);

             // Add a preference row for each individual account
             for (Account account : accounts) {
                 String key = AccountPreference.buildKey(account);
                 AccountPreference preference = (AccountPreference) mPreferences.getOrDefault(key,
                         new AccountPreference(getContext(), account, label, icon));
                 preference.setOnPreferenceClickListener(
                         (Preference pref) -> onAccountPreferenceClicked((AccountPreference) pref));

                 accountPreferences.add(preference);
                 preferencesToRemove.remove(key);
             }
             mAuthenticatorHelper.preloadDrawableForType(getContext(), accountType);
         }

         // If there are no accounts, return the "no account added" preference.
         if (accountPreferences.isEmpty()) {
             preferencesToRemove.remove(NO_ACCOUNT_PREF_KEY);
             return Arrays.asList(mPreferences.getOrDefault(NO_ACCOUNT_PREF_KEY,
                     createNoAccountsAddedPreference()));
         }

         Collections.sort(accountPreferences, Comparator.comparing(
                 (AccountPreference a) -> a.getSummary().toString())
                 .thenComparing((AccountPreference a) -> a.getTitle().toString()));

         return accountPreferences;
     }

     private Preference createNoAccountsAddedPreference() {
         Preference emptyPreference = new Preference(getContext());
         emptyPreference.setTitle(R.string.no_accounts_added);
         emptyPreference.setKey(NO_ACCOUNT_PREF_KEY);
         emptyPreference.setSelectable(false);

         return emptyPreference;
     }

     /**
      * Returns whether the account type has any of the authorities requested by the caller.
      *
      * <p> Derived from {@link AccountPreferenceController#accountTypeHasAnyRequestedAuthorities}
      */
     private boolean accountTypeHasAnyRequestedAuthorities(String accountType) {
         if (mAuthorities == null || mAuthorities.length == 0) {
             // No authorities required
             return true;
         }
         ArrayList<String> authoritiesForType =
                 mAuthenticatorHelper.getAuthoritiesForAccountType(accountType);
         if (authoritiesForType == null) {
             return false;
         }
         for (int j = 0; j < mAuthorities.length; j++) {
             if (authoritiesForType.contains(mAuthorities[j])) {
                 return true;
             }
         }
         return false;
     }

     private static class AccountPreference extends Preference {
         /** Account that this Preference represents. */
         private final Account mAccount;
         private final CharSequence mLabel;

         private AccountPreference(Context context, Account account, CharSequence label,
                 Drawable icon) {
             super(context);
             mAccount = account;
             mLabel = label;

             setKey(buildKey(account));
             setTitle(account.name);
             setSummary(label);
             setIcon(icon);
         }

         /**
          * Build a unique preference key based on the account.
          */
         public static String buildKey(Account account) {
             return String.valueOf(account.hashCode());
         }

         public Account getAccount() {
             return mAccount;
         }

         public CharSequence getLabel() {
             return mLabel;
         }
     }
 }
	/*
	* Copyright (C) 2018 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.car.settings.accounts;

	import android.accounts.Account;
	import android.accounts.AccountManager;
	import android.car.drivingstate.CarUxRestrictions;
	import android.car.userlib.CarUserManagerHelper;
	import android.content.Context;
	import android.content.pm.UserInfo;
	import android.graphics.drawable.Drawable;
	import android.os.UserHandle;

	import androidx.collection.ArrayMap;
	import androidx.preference.Preference;
	import androidx.preference.PreferenceCategory;

	import com.android.car.settings.R;
	import com.android.car.settings.common.FragmentController;
	import com.android.car.settings.common.PreferenceController;
	import com.android.settingslib.accounts.AuthenticatorHelper;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.HashSet;
	import java.util.List;
	import java.util.Set;

	/**
	* Controller for listing accounts.
	*
	* <p>Largely derived from {@link com.android.settings.accounts.AccountPreferenceController}
	*/
	public class AccountListPreferenceController extends
	PreferenceController<PreferenceCategory> implements
	AuthenticatorHelper.OnAccountsUpdateListener,
	CarUserManagerHelper.OnUsersUpdateListener {
	private static final String NO_ACCOUNT_PREF_KEY = "no_accounts_added";

	private final UserInfo mUserInfo;
	private final CarUserManagerHelper mCarUserManagerHelper;
	private final ArrayMap<String, Preference> mPreferences = new ArrayMap<>();
	private AuthenticatorHelper mAuthenticatorHelper;
	private String[] mAuthorities;

	public AccountListPreferenceController(Context context, String preferenceKey,
	FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
	super(context, preferenceKey, fragmentController, uxRestrictions);
	mCarUserManagerHelper = new CarUserManagerHelper(context);
	mUserInfo = mCarUserManagerHelper.getCurrentProcessUserInfo();
	mAuthenticatorHelper = new AuthenticatorHelper(context,
	mUserInfo.getUserHandle(), /* listener= */ this);
	}

	/** Sets the account authorities that are available. */
	public void setAuthorities(String[] authorities) {
	mAuthorities = authorities;
	}

	@Override
	protected Class<PreferenceCategory> getPreferenceType() {
	return PreferenceCategory.class;
	}

	@Override
	protected void updateState(PreferenceCategory preference) {
	forceUpdateAccountsCategory();
	}

	@Override
	protected int getAvailabilityStatus() {
	return mCarUserManagerHelper.canCurrentProcessModifyAccounts() ? AVAILABLE
	: DISABLED_FOR_USER;
	}

	/**
	* Registers the account update and user update callbacks.
	*/
	@Override
	protected void onStartInternal() {
	mAuthenticatorHelper.listenToAccountUpdates();
	mCarUserManagerHelper.registerOnUsersUpdateListener(this);
	}

	/**
	* Unregisters the account update and user update callbacks.
	*/
	@Override
	protected void onStopInternal() {
	mAuthenticatorHelper.stopListeningToAccountUpdates();
	mCarUserManagerHelper.unregisterOnUsersUpdateListener(this);
	}

	@Override
	public void onAccountsUpdate(UserHandle userHandle) {
	if (userHandle.equals(mUserInfo.getUserHandle())) {
	forceUpdateAccountsCategory();
	}
	}

	@Override
	public void onUsersUpdate() {
	forceUpdateAccountsCategory();
	}

	private boolean onAccountPreferenceClicked(AccountPreference preference) {
	// Show the account's details when an account is clicked on.
	getFragmentController().launchFragment(AccountDetailsFragment.newInstance(
	preference.getAccount(), preference.getLabel(), mUserInfo));
	return true;
	}

	/** Forces a refresh of the account preferences. */
	private void forceUpdateAccountsCategory() {
	// Set the category title and include the user's name
	getPreference().setTitle(
	getContext().getString(R.string.account_list_title, mUserInfo.name));

	// Recreate the authentication helper to refresh the list of enabled accounts
	mAuthenticatorHelper = new AuthenticatorHelper(getContext(), mUserInfo.getUserHandle(),
	this);

	Set<String> preferencesToRemove = new HashSet<>(mPreferences.keySet());
	List<? extends Preference> preferences = getAccountPreferences(preferencesToRemove);
	// Add all preferences that aren't already shown. Manually set the order so that existing
	// preferences are reordered correctly.
	for (int i = 0; i < preferences.size(); i++) {
	Preference pref = preferences.get(i);
	pref.setOrder(i);
	mPreferences.put(pref.getKey(), pref);
	getPreference().addPreference(pref);
	}

	for (String key : preferencesToRemove) {
	getPreference().removePreference(mPreferences.get(key));
	mPreferences.remove(key);
	}
	}

	/**
	* Returns a list of preferences corresponding to the accounts for the current user.
	*
	* <p> Derived from
	* {@link com.android.settings.accounts.AccountPreferenceController#getAccountTypePreferences}
	*
	* @param preferencesToRemove the current preferences shown; only preferences to be removed will
	* remain after method execution
	*/
	private List<? extends Preference> getAccountPreferences(
	Set<String> preferencesToRemove) {
	String[] accountTypes = mAuthenticatorHelper.getEnabledAccountTypes();
	ArrayList<AccountPreference> accountPreferences =
	new ArrayList<>(accountTypes.length);

	for (int i = 0; i < accountTypes.length; i++) {
	String accountType = accountTypes[i];
	// Skip showing any account that does not have any of the requested authorities
	if (!accountTypeHasAnyRequestedAuthorities(accountType)) {
	continue;
	}
	CharSequence label = mAuthenticatorHelper.getLabelForType(getContext(), accountType);
	if (label == null) {
	continue;
	}

	Account[] accounts = AccountManager.get(getContext())
	.getAccountsByTypeAsUser(accountType, mUserInfo.getUserHandle());
	Drawable icon = mAuthenticatorHelper.getDrawableForType(getContext(), accountType);

	// Add a preference row for each individual account
	for (Account account : accounts) {
	String key = AccountPreference.buildKey(account);
	AccountPreference preference = (AccountPreference) mPreferences.getOrDefault(key,
	new AccountPreference(getContext(), account, label, icon));
	preference.setOnPreferenceClickListener(
	(Preference pref) -> onAccountPreferenceClicked((AccountPreference) pref));

	accountPreferences.add(preference);
	preferencesToRemove.remove(key);
	}
	mAuthenticatorHelper.preloadDrawableForType(getContext(), accountType);
	}

	// If there are no accounts, return the "no account added" preference.
	if (accountPreferences.isEmpty()) {
	preferencesToRemove.remove(NO_ACCOUNT_PREF_KEY);
	return Arrays.asList(mPreferences.getOrDefault(NO_ACCOUNT_PREF_KEY,
	createNoAccountsAddedPreference()));
	}

	Collections.sort(accountPreferences, Comparator.comparing(
	(AccountPreference a) -> a.getSummary().toString())
	.thenComparing((AccountPreference a) -> a.getTitle().toString()));

	return accountPreferences;
	}

	private Preference createNoAccountsAddedPreference() {
	Preference emptyPreference = new Preference(getContext());
	emptyPreference.setTitle(R.string.no_accounts_added);
	emptyPreference.setKey(NO_ACCOUNT_PREF_KEY);
	emptyPreference.setSelectable(false);

	return emptyPreference;
	}

	/**
	* Returns whether the account type has any of the authorities requested by the caller.
	*
	* <p> Derived from {@link AccountPreferenceController#accountTypeHasAnyRequestedAuthorities}
	*/
	private boolean accountTypeHasAnyRequestedAuthorities(String accountType) {
	if (mAuthorities == null \|\| mAuthorities.length == 0) {
	// No authorities required
	return true;
	}
	ArrayList<String> authoritiesForType =
	mAuthenticatorHelper.getAuthoritiesForAccountType(accountType);
	if (authoritiesForType == null) {
	return false;
	}
	for (int j = 0; j < mAuthorities.length; j++) {
	if (authoritiesForType.contains(mAuthorities[j])) {
	return true;
	}
	}
	return false;
	}

	private static class AccountPreference extends Preference {
	/** Account that this Preference represents. */
	private final Account mAccount;
	private final CharSequence mLabel;

	private AccountPreference(Context context, Account account, CharSequence label,
	Drawable icon) {
	super(context);
	mAccount = account;
	mLabel = label;

	setKey(buildKey(account));
	setTitle(account.name);
	setSummary(label);
	setIcon(icon);
	}

	/**
	* Build a unique preference key based on the account.
	*/
	public static String buildKey(Account account) {
	return String.valueOf(account.hashCode());
	}

	public Account getAccount() {
	return mAccount;
	}

	public CharSequence getLabel() {
	return mLabel;
	}
	}
	}