src/com/owncloud/android/authentication/AuthenticatorActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.authentication;
  20
  21 import com.owncloud.android.AccountUtils;
  22 import com.owncloud.android.Log_OC;
  23 import com.owncloud.android.ui.dialog.SslValidatorDialog;
  24 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
  25 import com.owncloud.android.utils.OwnCloudVersion;
  26 import com.owncloud.android.network.OwnCloudClientUtils;
  27 import com.owncloud.android.operations.OwnCloudServerCheckOperation;
  28 import com.owncloud.android.operations.ExistenceCheckOperation;
  29 import com.owncloud.android.operations.OAuth2GetAccessToken;
  30 import com.owncloud.android.operations.OnRemoteOperationListener;
  31 import com.owncloud.android.operations.RemoteOperation;
  32 import com.owncloud.android.operations.RemoteOperationResult;
  33 import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
  34
  35 import android.accounts.Account;
  36 import android.accounts.AccountAuthenticatorActivity;
  37 import android.accounts.AccountManager;
  38 import android.app.AlertDialog;
  39 import android.app.Dialog;
  40 import android.app.ProgressDialog;
  41 import android.content.ContentResolver;
  42 import android.content.DialogInterface;
  43 import android.content.Intent;
  44 import android.content.SharedPreferences;
  45 import android.graphics.Rect;
  46 import android.graphics.drawable.Drawable;
  47 import android.net.Uri;
  48 import android.os.Bundle;
  49 import android.os.Handler;
  50 import android.preference.PreferenceManager;
  51 import android.text.InputType;
  52 import android.view.KeyEvent;
  53 import android.view.MotionEvent;
  54 import android.view.View;
  55 import android.view.View.OnFocusChangeListener;
  56 import android.view.View.OnTouchListener;
  57 import android.view.Window;
  58 import android.view.inputmethod.EditorInfo;
  59 import android.widget.CheckBox;
  60 import android.widget.EditText;
  61 import android.widget.Button;
  62 import android.widget.ImageView;
  63 import android.widget.TextView;
  64 import android.widget.Toast;
  65 import android.widget.TextView.OnEditorActionListener;
  66
  67 import com.owncloud.android.R;
  68
  69 import eu.alefzero.webdav.WebdavClient;
  70
  71 /**
  72  * This Activity is used to add an ownCloud account to the App
  73  *
  74  * @author Bartek Przybylski
  75  * @author David A. Velasco
  76  */
  77 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  78         implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener {
  79
  80     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  81
  82     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  83     public static final String EXTRA_USER_NAME = "USER_NAME";
  84     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  85     public static final String EXTRA_ACTION = "ACTION";
  86
  87     private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
  88     private static final String KEY_OC_VERSION = "OC_VERSION";
  89     private static final String KEY_ACCOUNT = "ACCOUNT";
  90     private static final String KEY_STATUS_TEXT = "STATUS_TEXT";
  91     private static final String KEY_STATUS_ICON = "STATUS_ICON";
  92     private static final String KEY_STATUS_CORRECT = "STATUS_CORRECT";
  93     private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
  94     private static final String KEY_OAUTH2_STATUS_TEXT = "OAUTH2_STATUS_TEXT";
  95     private static final String KEY_OAUTH2_STATUS_ICON = "OAUTH2_STATUS_ICON";
  96
  97     private static final String OAUTH_MODE_ON = "on";
  98     private static final String OAUTH_MODE_OFF = "off";
  99     private static final String OAUTH_MODE_OPTIONAL = "optional";
 100
 101     private static final int DIALOG_LOGIN_PROGRESS = 0;
 102     private static final int DIALOG_SSL_VALIDATOR = 1;
 103     private static final int DIALOG_CERT_NOT_SAVED = 2;
 104     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 105
 106     public static final byte ACTION_CREATE = 0;
 107     public static final byte ACTION_UPDATE_TOKEN = 1;
 108
 109
 110     private String mHostBaseUrl;
 111     private OwnCloudVersion mDiscoveredVersion;
 112
 113     private int mStatusText, mStatusIcon;
 114     private boolean mStatusCorrect, mIsSslConn;
 115     private int mOAuth2StatusText, mOAuth2StatusIcon;
 116
 117     private final Handler mHandler = new Handler();
 118     private Thread mOperationThread;
 119     private OwnCloudServerCheckOperation mOcServerChkOperation;
 120     private ExistenceCheckOperation mAuthCheckOperation;
 121     private RemoteOperationResult mLastSslUntrustedServerResult;
 122
 123     private Uri mNewCapturedUriFromOAuth2Redirection;
 124
 125     private AccountManager mAccountMgr;
 126     private boolean mJustCreated;
 127     private byte mAction;
 128     private Account mAccount;
 129
 130     private ImageView mViewPasswordButton;
 131     private EditText mHostUrlInput;
 132     private EditText mUsernameInput;
 133     private EditText mPasswordInput;
 134     private CheckBox mOAuth2Check;
 135     private String mOAuthAccessToken;
 136     private View mOkButton;
 137     private TextView mAuthStatusLayout;
 138
 139     private TextView mOAuthAuthEndpointText;
 140     private TextView mOAuthTokenEndpointText;
 141
 142
 143     /**
 144      * {@inheritDoc}
 145      *
 146      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 147      */
 148     @Override
 149     protected void onCreate(Bundle savedInstanceState) {
 150         super.onCreate(savedInstanceState);
 151         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 152
 153         /// set view and get references to view elements
 154         setContentView(R.layout.account_setup);
 155         mViewPasswordButton = (ImageView) findViewById(R.id.viewPasswordButton);
 156         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 157         mUsernameInput = (EditText) findViewById(R.id.account_username);
 158         mPasswordInput = (EditText) findViewById(R.id.account_password);
 159         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 160         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 161         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 162         mOkButton = findViewById(R.id.buttonOK);
 163         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 164
 165         /// complete label for 'register account' button
 166         Button b = (Button) findViewById(R.id.account_register);
 167         if (b != null) {
 168             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 169         }
 170
 171         /// bind view elements to listeners
 172         mHostUrlInput.setOnFocusChangeListener(this);
 173         mHostUrlInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 174             @Override
 175             public boolean onDrawableTouch(final MotionEvent event) {
 176                 AuthenticatorActivity.this.onRefreshClick(mHostUrlInput);
 177                 return true;
 178             }
 179         });
 180         mPasswordInput.setOnFocusChangeListener(this);
 181         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 182         mPasswordInput.setOnEditorActionListener(this);
 183
 184         /// initialization
 185         mAccountMgr = AccountManager.get(this);
 186         mNewCapturedUriFromOAuth2Redirection = null;
 187         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 188         mAccount = null;
 189
 190         if (savedInstanceState == null) {
 191             /// connection state and info
 192             mStatusText = mStatusIcon = 0;
 193             mStatusCorrect = false;
 194             mIsSslConn = false;
 195             updateConnStatus();
 196             updateAuthStatus();
 197
 198             /// retrieve extras from intent
 199             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 200             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 201
 202             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 203             if (mAccount != null) {
 204                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 205                 if (ocVersion != null) {
 206                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 207                 }
 208                 mHostBaseUrl = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL);
 209                 mHostUrlInput.setText(mHostBaseUrl);
 210                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 211                 mUsernameInput.setText(userName);
 212                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 213             }
 214             mOAuth2Check.setChecked(oAuthRequired);
 215             changeViewByOAuth2Check(oAuthRequired);
 216
 217
 218         } else {
 219             loadSavedInstanceState(savedInstanceState);
 220         }
 221
 222         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 223             mOAuth2Check.setVisibility(View.GONE);
 224         }
 225
 226         if (mAction == ACTION_UPDATE_TOKEN) {
 227             /// lock things that should not change
 228             mHostUrlInput.setEnabled(false);
 229             mUsernameInput.setEnabled(false);
 230             mOAuth2Check.setVisibility(View.GONE);
 231             checkOcServer();
 232         }
 233
 234         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 235         mJustCreated = true;
 236     }
 237
 238
 239     /**
 240      * Saves relevant state before {@link #onPause()}
 241      *
 242      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 243      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 244      *
 245      * See {@link #loadSavedInstanceState(Bundle)}
 246      */
 247     @Override
 248     protected void onSaveInstanceState(Bundle outState) {
 249         super.onSaveInstanceState(outState);
 250
 251         /// connection state and info
 252         outState.putInt(KEY_STATUS_TEXT, mStatusText);
 253         outState.putInt(KEY_STATUS_ICON, mStatusIcon);
 254         outState.putBoolean(KEY_STATUS_CORRECT, mStatusCorrect);
 255         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 256
 257         /// server data
 258         if (mDiscoveredVersion != null)
 259             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 260         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 261
 262         /// account data, if updating
 263         if (mAccount != null)
 264             outState.putParcelable(KEY_ACCOUNT, mAccount);
 265
 266         // Saving the state of oAuth2 components.
 267         outState.putInt(KEY_OAUTH2_STATUS_ICON, mOAuth2StatusIcon);
 268         outState.putInt(KEY_OAUTH2_STATUS_TEXT, mOAuth2StatusText);
 269
 270     }
 271
 272
 273     /**
 274      * Loads saved state
 275      *
 276      * See {@link #onSaveInstanceState(Bundle)}.
 277      *
 278      * @param savedInstanceState    Saved state, as received in {@link #onCreate(Bundle)}.
 279      */
 280     private void loadSavedInstanceState(Bundle savedInstanceState) {
 281         /// connection state and info
 282         mStatusCorrect = savedInstanceState.getBoolean(KEY_STATUS_CORRECT);
 283         mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 284         mStatusText = savedInstanceState.getInt(KEY_STATUS_TEXT);
 285         mStatusIcon = savedInstanceState.getInt(KEY_STATUS_ICON);
 286         updateConnStatus();
 287
 288         /// UI settings depending upon connection
 289         mOkButton.setEnabled(mStatusCorrect);
 290         if (!mStatusCorrect) {
 291             mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
 292         } else {
 293             mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 294         }
 295
 296         /// server data
 297         String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 298         if (ocVersion != null)
 299             mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 300         mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 301
 302         // account data, if updating
 303         mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 304
 305         // state of oAuth2 components
 306         mOAuth2StatusIcon = savedInstanceState.getInt(KEY_OAUTH2_STATUS_ICON);
 307         mOAuth2StatusText = savedInstanceState.getInt(KEY_OAUTH2_STATUS_TEXT);
 308         // END of getting the state of oAuth2 components.
 309     }
 310
 311
 312     /**
 313      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 314      * is caught here.
 315      *
 316      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 317      * AndroidManifest.xml file.
 318      */
 319     @Override
 320     protected void onNewIntent (Intent intent) {
 321         Log_OC.d(TAG, "onNewIntent()");
 322         Uri data = intent.getData();
 323         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 324             mNewCapturedUriFromOAuth2Redirection = data;
 325         }
 326     }
 327
 328
 329     /**
 330      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 331      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 332      */
 333     @Override
 334     protected void onResume() {
 335         super.onResume();
 336         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 337         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 338         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated) {
 339             if (mOAuth2Check.isChecked())
 340                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 341             else
 342                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 343         }
 344
 345         if (mNewCapturedUriFromOAuth2Redirection != null) {
 346             getOAuth2AccessTokenFromCapturedRedirection();
 347         }
 348
 349         mJustCreated = false;
 350     }
 351
 352
 353     /**
 354      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 355      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 356      */
 357     private void getOAuth2AccessTokenFromCapturedRedirection() {
 358         /// Parse data from OAuth redirection
 359         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 360         mNewCapturedUriFromOAuth2Redirection = null;
 361
 362         /// Showing the dialog with instructions for the user.
 363         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 364
 365         /// GET ACCESS TOKEN to the oAuth server
 366         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 367                                                                 getString(R.string.oauth2_redirect_uri),
 368                                                                 getString(R.string.oauth2_grant_type),
 369                                                                 queryParameters);
 370         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 371         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 372         operation.execute(client, this, mHandler);
 373     }
 374
 375
 376
 377     /**
 378      * Handles the change of focus on the text inputs for the server URL and the password
 379      */
 380     public void onFocusChange(View view, boolean hasFocus) {
 381         if (view.getId() == R.id.hostUrlInput) {
 382             onUrlInputFocusChanged((TextView) view, hasFocus);
 383
 384         } else if (view.getId() == R.id.account_password) {
 385             onPasswordFocusChanged((TextView) view, hasFocus);
 386         }
 387     }
 388
 389
 390     /**
 391      * Handles changes in focus on the text input for the server URL.
 392      *
 393      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 394      * other field. The operation to check the existence of the server in the entered URL is
 395      * started.
 396      *
 397      * When hasFocus:    user 'comes back' to write again the server URL.
 398      *
 399      * @param hostInput     TextView with the URL input field receiving the change of focus.
 400      * @param hasFocus      'True' if focus is received, 'false' if is lost
 401      */
 402     private void onUrlInputFocusChanged(TextView hostInput, boolean hasFocus) {
 403         if (!hasFocus) {
 404             checkOcServer();
 405
 406         } else {
 407             // avoids that the 'connect' button can be clicked if the test was previously passed
 408             mOkButton.setEnabled(false);
 409         }
 410     }
 411
 412
 413     private void checkOcServer() {
 414         String uri = mHostUrlInput.getText().toString().trim();
 415         if (uri.length() != 0) {
 416             mStatusText = R.string.auth_testing_connection;
 417             mStatusIcon = R.drawable.progress_small;
 418             updateConnStatus();
 419             /** TODO cancel previous connection check if the user tries to ammend a wrong URL
 420             if(mConnChkOperation != null) {
 421                 mConnChkOperation.cancel();
 422             } */
 423             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 424             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 425             mHostBaseUrl = "";
 426             mDiscoveredVersion = null;
 427             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 428         } else {
 429             mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 430             mStatusText = 0;
 431             mStatusIcon = 0;
 432             updateConnStatus();
 433         }
 434     }
 435
 436
 437     /**
 438      * Handles changes in focus on the text input for the password (basic authorization).
 439      *
 440      * When (hasFocus), the button to toggle password visibility is shown.
 441      *
 442      * When (!hasFocus), the button is made invisible and the password is hidden.
 443      *
 444      * @param passwordInput    TextView with the password input field receiving the change of focus.
 445      * @param hasFocus          'True' if focus is received, 'false' if is lost
 446      */
 447     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 448         if (hasFocus) {
 449             mViewPasswordButton.setVisibility(View.VISIBLE);
 450         } else {
 451             int input_type = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
 452             passwordInput.setInputType(input_type);
 453             mViewPasswordButton.setVisibility(View.INVISIBLE);
 454         }
 455     }
 456
 457
 458
 459     /**
 460      * Cancels the authenticator activity
 461      *
 462      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 463      *
 464      * This method is bound in the layout/acceoun_setup.xml resource file.
 465      *
 466      * @param view      Cancel button
 467      */
 468     public void onCancelClick(View view) {
 469         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 470         finish();
 471     }
 472
 473
 474
 475     /**
 476      * Checks the credentials of the user in the root of the ownCloud server
 477      * before creating a new local account.
 478      *
 479      * For basic authorization, a check of existence of the root folder is
 480      * performed.
 481      *
 482      * For OAuth, starts the flow to get an access token; the credentials test
 483      * is postponed until it is available.
 484      *
 485      * IMPORTANT ENTRY POINT 4
 486      *
 487      * @param view      OK button
 488      */
 489     public void onOkClick(View view) {
 490         // this check should be unnecessary
 491         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 492             mStatusIcon = R.drawable.common_error;
 493             mStatusText = R.string.auth_wtf_reenter_URL;
 494             updateConnStatus();
 495             mOkButton.setEnabled(false);
 496             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 497             return;
 498         }
 499
 500         if (mOAuth2Check.isChecked()) {
 501             startOauthorization();
 502
 503         } else {
 504             checkBasicAuthorization();
 505         }
 506     }
 507
 508
 509     /**
 510      * Tests the credentials entered by the user performing a check of existence on
 511      * the root folder of the ownCloud server.
 512      */
 513     private void checkBasicAuthorization() {
 514         /// get the path to the root folder through WebDAV from the version server
 515         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 516
 517         /// get basic credentials entered by user
 518         String username = mUsernameInput.getText().toString();
 519         String password = mPasswordInput.getText().toString();
 520
 521         /// be gentle with the user
 522         showDialog(DIALOG_LOGIN_PROGRESS);
 523
 524         /// test credentials accessing the root folder
 525         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 526         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 527         client.setBasicCredentials(username, password);
 528         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 529     }
 530
 531
 532     /**
 533      * Starts the OAuth 'grant type' flow to get an access token, with
 534      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 535      */
 536     private void startOauthorization() {
 537         // be gentle with the user
 538         mStatusIcon = R.drawable.progress_small;
 539         mStatusText = R.string.oauth_login_connection;
 540         updateAuthStatus();
 541
 542         // GET AUTHORIZATION request
 543         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 544         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 545         Uri.Builder uriBuilder = uri.buildUpon();
 546         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 547         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 548         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 549         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 550         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 551         uri = uriBuilder.build();
 552         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 553         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 554         startActivity(i);
 555     }
 556
 557
 558     /**
 559      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 560      *
 561      * Dispatches the operation flow to the right method.
 562      */
 563     @Override
 564     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 565
 566         if (operation instanceof OwnCloudServerCheckOperation) {
 567             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 568
 569         } else if (operation instanceof OAuth2GetAccessToken) {
 570             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 571
 572         } else if (operation instanceof ExistenceCheckOperation)  {
 573             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 574
 575         }
 576     }
 577
 578
 579     /**
 580      * Processes the result of the server check performed when the user finishes the enter of the
 581      * server URL.
 582      *
 583      * @param operation     Server check performed.
 584      * @param result        Result of the check.
 585      */
 586     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 587         /// update status icon and text
 588         updateStatusIconAndText(result);
 589         updateConnStatus();
 590
 591         /// save result state
 592         mStatusCorrect = result.isSuccess();
 593         mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 594
 595         /// very special case (TODO: move to a common place for all the remote operations)
 596         if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 597             mLastSslUntrustedServerResult = result;
 598             showDialog(DIALOG_SSL_VALIDATOR);
 599         }
 600
 601         /// update the visibility of the 'retry connection' button
 602         if (!mStatusCorrect) {
 603             mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
 604         } else {
 605             mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 606         }
 607
 608         /// retrieve discovered version and normalize server URL
 609         mDiscoveredVersion = operation.getDiscoveredVersion();
 610         mHostBaseUrl = mHostUrlInput.getText().toString().trim();
 611         if (!mHostBaseUrl.toLowerCase().startsWith("http://") &&
 612             !mHostBaseUrl.toLowerCase().startsWith("https://")) {
 613
 614             if (mIsSslConn) {
 615                 mHostBaseUrl = "https://" + mHostBaseUrl;
 616             } else {
 617                 mHostBaseUrl = "http://" + mHostBaseUrl;
 618             }
 619
 620         }
 621         if (mHostBaseUrl.endsWith("/"))
 622             mHostBaseUrl = mHostBaseUrl.substring(0, mHostBaseUrl.length() - 1);
 623
 624         /// allow or not the user try to access the server
 625         mOkButton.setEnabled(mStatusCorrect);
 626     }
 627
 628
 629     /**
 630      * Chooses the right icon and text to show to the user for the received operation result.
 631      *
 632      * @param result    Result of a remote operation performed in this activity
 633      */
 634     private void updateStatusIconAndText(RemoteOperationResult result) {
 635         mStatusText = mStatusIcon = 0;
 636
 637         switch (result.getCode()) {
 638         case OK_SSL:
 639             mStatusIcon = android.R.drawable.ic_secure;
 640             mStatusText = R.string.auth_secure_connection;
 641             break;
 642
 643         case OK_NO_SSL:
 644         case OK:
 645             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 646                 mStatusText = R.string.auth_connection_established;
 647                 mStatusIcon = R.drawable.ic_ok;
 648             } else {
 649                 mStatusText = R.string.auth_nossl_plain_ok_title;
 650                 mStatusIcon = android.R.drawable.ic_partial_secure;
 651             }
 652             break;
 653
 654         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 655             mStatusIcon = R.drawable.common_error;
 656             mStatusText = R.string.auth_ssl_unverified_server_title;
 657             break;
 658
 659         case BAD_OC_VERSION:
 660             mStatusIcon = R.drawable.common_error;
 661             mStatusText = R.string.auth_bad_oc_version_title;
 662             break;
 663         case WRONG_CONNECTION:
 664             mStatusIcon = R.drawable.common_error;
 665             mStatusText = R.string.auth_wrong_connection_title;
 666             break;
 667         case TIMEOUT:
 668             mStatusIcon = R.drawable.common_error;
 669             mStatusText = R.string.auth_timeout_title;
 670             break;
 671         case INCORRECT_ADDRESS:
 672             mStatusIcon = R.drawable.common_error;
 673             mStatusText = R.string.auth_incorrect_address_title;
 674             break;
 675
 676         case SSL_ERROR:
 677             mStatusIcon = R.drawable.common_error;
 678             mStatusText = R.string.auth_ssl_general_error_title;
 679             break;
 680
 681         case UNAUTHORIZED:
 682             mStatusIcon = R.drawable.common_error;
 683             mStatusText = R.string.auth_unauthorized;
 684             break;
 685         case HOST_NOT_AVAILABLE:
 686             mStatusIcon = R.drawable.common_error;
 687             mStatusText = R.string.auth_unknown_host_title;
 688             break;
 689         case NO_NETWORK_CONNECTION:
 690             mStatusIcon = R.drawable.no_network;
 691             mStatusText = R.string.auth_no_net_conn_title;
 692             break;
 693         case INSTANCE_NOT_CONFIGURED:
 694             mStatusIcon = R.drawable.common_error;
 695             mStatusText = R.string.auth_not_configured_title;
 696             break;
 697         case FILE_NOT_FOUND:
 698             mStatusIcon = R.drawable.common_error;
 699             mStatusText = R.string.auth_incorrect_path_title;
 700             break;
 701         case OAUTH2_ERROR:
 702             mStatusIcon = R.drawable.common_error;
 703             mStatusText = R.string.auth_oauth_error;
 704             break;
 705         case OAUTH2_ERROR_ACCESS_DENIED:
 706             mStatusIcon = R.drawable.common_error;
 707             mStatusText = R.string.auth_oauth_error_access_denied;
 708             break;
 709         case UNHANDLED_HTTP_CODE:
 710         case UNKNOWN_ERROR:
 711             mStatusIcon = R.drawable.common_error;
 712             mStatusText = R.string.auth_unknown_error_title;
 713             break;
 714
 715         default:
 716             break;
 717         }
 718     }
 719
 720
 721     /**
 722      * Processes the result of the request for and access token send
 723      * to an OAuth authorization server.
 724      *
 725      * @param operation     Operation performed requesting the access token.
 726      * @param result        Result of the operation.
 727      */
 728     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 729         try {
 730             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 731         } catch (IllegalArgumentException e) {
 732             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 733         }
 734
 735         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 736         if (result.isSuccess() && webdav_path != null) {
 737             /// be gentle with the user
 738             showDialog(DIALOG_LOGIN_PROGRESS);
 739
 740             /// time to test the retrieved access token on the ownCloud server
 741             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 742             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 743             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 744             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 745             client.setBearerCredentials(mOAuthAccessToken);
 746             mAuthCheckOperation.execute(client, this, mHandler);
 747
 748         } else {
 749             updateStatusIconAndText(result);
 750             updateAuthStatus();
 751             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 752         }
 753     }
 754
 755
 756     /**
 757      * Processes the result of the access check performed to try the user credentials.
 758      *
 759      * Creates a new account through the AccountManager.
 760      *
 761      * @param operation     Access check performed.
 762      * @param result        Result of the operation.
 763      */
 764     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 765         try {
 766             dismissDialog(DIALOG_LOGIN_PROGRESS);
 767         } catch (IllegalArgumentException e) {
 768             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 769         }
 770
 771         if (result.isSuccess()) {
 772             Log_OC.d(TAG, "Successful access - time to save the account");
 773
 774             if (mAction == ACTION_CREATE) {
 775                 createAccount();
 776
 777             } else {
 778                 updateToken();
 779             }
 780
 781             finish();
 782
 783         } else {
 784             updateStatusIconAndText(result);
 785             updateAuthStatus();
 786             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 787         }
 788     }
 789
 790
 791     /**
 792      * Sets the proper response to get that the Account Authenticator that started this activity saves
 793      * a new authorization token for mAccount.
 794      */
 795     private void updateToken() {
 796         Bundle response = new Bundle();
 797         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 798         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 799         boolean isOAuth = mOAuth2Check.isChecked();
 800         if (isOAuth) {
 801             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 802             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
 803             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 804         } else {
 805             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
 806             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
 807         }
 808         setAccountAuthenticatorResult(response);
 809     }
 810
 811
 812     /**
 813      * Creates a new account through the Account Authenticator that started this activity.
 814      *
 815      * This makes the account permanent.
 816      *
 817      * TODO Decide how to name the OAuth accounts
 818      */
 819     private void createAccount() {
 820         /// create and save new ownCloud account
 821         boolean isOAuth = mOAuth2Check.isChecked();
 822
 823         Uri uri = Uri.parse(mHostBaseUrl);
 824         String username = mUsernameInput.getText().toString().trim();
 825         if (isOAuth) {
 826             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
 827         }
 828         String accountName = username + "@" + uri.getHost();
 829         if (uri.getPort() >= 0) {
 830             accountName += ":" + uri.getPort();
 831         }
 832         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
 833         if (isOAuth) {
 834             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
 835         } else {
 836             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
 837         }
 838
 839         /// add the new account as default in preferences, if there is none already
 840         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
 841         if (defaultAccount == null) {
 842             SharedPreferences.Editor editor = PreferenceManager
 843                     .getDefaultSharedPreferences(this).edit();
 844             editor.putString("select_oc_account", accountName);
 845             editor.commit();
 846         }
 847
 848         /// prepare result to return to the Authenticator
 849         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
 850         final Intent intent = new Intent();
 851         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
 852         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
 853         if (!isOAuth)
 854             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
 855         intent.putExtra(AccountManager.KEY_USERDATA,        username);
 856         if (isOAuth) {
 857             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 858         }
 859         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
 860         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
 861         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
 862         if (isOAuth)
 863             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
 864
 865         setAccountAuthenticatorResult(intent.getExtras());
 866         setResult(RESULT_OK, intent);
 867
 868         /// immediately request for the synchronization of the new account
 869         Bundle bundle = new Bundle();
 870         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
 871         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
 872     }
 873
 874
 875     /**
 876      * {@inheritDoc}
 877      *
 878      * Necessary to update the contents of the SSL Dialog
 879      *
 880      * TODO move to some common place for all possible untrusted SSL failures
 881      */
 882     @Override
 883     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
 884         switch (id) {
 885         case DIALOG_LOGIN_PROGRESS:
 886         case DIALOG_CERT_NOT_SAVED:
 887         case DIALOG_OAUTH2_LOGIN_PROGRESS:
 888             break;
 889         case DIALOG_SSL_VALIDATOR: {
 890             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
 891             break;
 892         }
 893         default:
 894             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
 895         }
 896     }
 897
 898
 899     /**
 900      * {@inheritDoc}
 901      */
 902     @Override
 903     protected Dialog onCreateDialog(int id) {
 904         Dialog dialog = null;
 905         switch (id) {
 906         case DIALOG_LOGIN_PROGRESS: {
 907             /// simple progress dialog
 908             ProgressDialog working_dialog = new ProgressDialog(this);
 909             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
 910             working_dialog.setIndeterminate(true);
 911             working_dialog.setCancelable(true);
 912             working_dialog
 913                     .setOnCancelListener(new DialogInterface.OnCancelListener() {
 914                         @Override
 915                         public void onCancel(DialogInterface dialog) {
 916                             /// TODO study if this is enough
 917                             Log_OC.i(TAG, "Login canceled");
 918                             if (mOperationThread != null) {
 919                                 mOperationThread.interrupt();
 920                                 finish();
 921                             }
 922                         }
 923                     });
 924             dialog = working_dialog;
 925             break;
 926         }
 927         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
 928             ProgressDialog working_dialog = new ProgressDialog(this);
 929             working_dialog.setMessage(String.format("Getting authorization"));
 930             working_dialog.setIndeterminate(true);
 931             working_dialog.setCancelable(true);
 932             working_dialog
 933             .setOnCancelListener(new DialogInterface.OnCancelListener() {
 934                 @Override
 935                 public void onCancel(DialogInterface dialog) {
 936                     Log_OC.i(TAG, "Login canceled");
 937                     finish();
 938                 }
 939             });
 940             dialog = working_dialog;
 941             break;
 942         }
 943         case DIALOG_SSL_VALIDATOR: {
 944             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
 945             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
 946             break;
 947         }
 948         case DIALOG_CERT_NOT_SAVED: {
 949             AlertDialog.Builder builder = new AlertDialog.Builder(this);
 950             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
 951             builder.setCancelable(false);
 952             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
 953                     @Override
 954                     public void onClick(DialogInterface dialog, int which) {
 955                         dialog.dismiss();
 956                     };
 957                 });
 958             dialog = builder.create();
 959             break;
 960         }
 961         default:
 962             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
 963         }
 964         return dialog;
 965     }
 966
 967
 968     /**
 969      * Starts and activity to open the 'new account' page in the ownCloud web site
 970      *
 971      * @param view      'Account register' button
 972      */
 973     public void onRegisterClick(View view) {
 974         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
 975         setResult(RESULT_CANCELED);
 976         startActivity(register);
 977     }
 978
 979
 980     /**
 981      * Updates the content and visibility state of the icon and text associated
 982      * to the last check on the ownCloud server.
 983      */
 984     private void updateConnStatus() {
 985         TextView tv = (TextView) findViewById(R.id.server_status_text);
 986
 987         if (mStatusIcon == 0 && mStatusText == 0) {
 988             tv.setVisibility(View.INVISIBLE);
 989         } else {
 990             tv.setText(mStatusText);
 991             tv.setCompoundDrawablesWithIntrinsicBounds(mStatusIcon, 0, 0, 0);
 992             tv.setVisibility(View.VISIBLE);
 993         }
 994     }
 995
 996
 997     /**
 998      * Updates the content and visibility state of the icon and text associated
 999      * to the interactions with the OAuth authorization server.
1000      */
1001     private void updateAuthStatus() {
1002         if (mStatusIcon == 0 && mStatusText == 0) {
1003             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1004         } else {
1005             mAuthStatusLayout.setText(mStatusText);
1006             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mStatusIcon, 0, 0, 0);
1007             mAuthStatusLayout.setVisibility(View.VISIBLE);
1008         }
1009     }
1010
1011
1012     /**
1013      * Called when the refresh button in the input field for ownCloud host is clicked.
1014      *
1015      * Performs a new check on the URL in the input field.
1016      *
1017      * @param view      Refresh 'button'
1018      */
1019     public void onRefreshClick(View view) {
1020         onFocusChange(mHostUrlInput, false);
1021     }
1022
1023
1024     /**
1025      * Called when the eye icon in the password field is clicked.
1026      *
1027      * Toggles the visibility of the password in the field.
1028      *
1029      * @param view      'View password' 'button'
1030      */
1031     public void onViewPasswordClick(View view) {
1032         int selectionStart = mPasswordInput.getSelectionStart();
1033         int selectionEnd = mPasswordInput.getSelectionEnd();
1034         int input_type = mPasswordInput.getInputType();
1035         if ((input_type & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) {
1036             input_type = InputType.TYPE_CLASS_TEXT
1037                     | InputType.TYPE_TEXT_VARIATION_PASSWORD;
1038         } else {
1039             input_type = InputType.TYPE_CLASS_TEXT
1040                     | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD;
1041         }
1042         mPasswordInput.setInputType(input_type);
1043         mPasswordInput.setSelection(selectionStart, selectionEnd);
1044     }
1045
1046
1047     /**
1048      * Called when the checkbox for OAuth authorization is clicked.
1049      *
1050      * Hides or shows the input fields for user & password.
1051      *
1052      * @param view      'View password' 'button'
1053      */
1054     public void onCheckClick(View view) {
1055         CheckBox oAuth2Check = (CheckBox)view;
1056         changeViewByOAuth2Check(oAuth2Check.isChecked());
1057
1058     }
1059
1060     /**
1061      * Changes the visibility of input elements depending upon the kind of authorization
1062      * chosen by the user: basic or OAuth
1063      *
1064      * @param checked       'True' when OAuth is selected.
1065      */
1066     public void changeViewByOAuth2Check(Boolean checked) {
1067
1068         if (checked) {
1069             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1070             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1071             mUsernameInput.setVisibility(View.GONE);
1072             mPasswordInput.setVisibility(View.GONE);
1073             mViewPasswordButton.setVisibility(View.GONE);
1074         } else {
1075             mOAuthAuthEndpointText.setVisibility(View.GONE);
1076             mOAuthTokenEndpointText.setVisibility(View.GONE);
1077             mUsernameInput.setVisibility(View.VISIBLE);
1078             mPasswordInput.setVisibility(View.VISIBLE);
1079             mViewPasswordButton.setVisibility(View.INVISIBLE);
1080         }
1081
1082     }
1083
1084     /**
1085      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1086      */
1087     public void onSavedCertificate() {
1088         mOperationThread = mOcServerChkOperation.retry(this, mHandler);
1089     }
1090
1091     /**
1092      * Called from SslValidatorDialog when a new server certificate could not be saved
1093      * when the user requested it.
1094      */
1095     @Override
1096     public void onFailedSavingCertificate() {
1097         showDialog(DIALOG_CERT_NOT_SAVED);
1098     }
1099
1100
1101     /**
1102      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1103      *
1104      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1105      */
1106     @Override
1107     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1108         if (inputField != null && inputField.equals(mPasswordInput) &&
1109                 actionId == EditorInfo.IME_ACTION_DONE) {
1110             if (mOkButton.isEnabled()) {
1111                 mOkButton.performClick();
1112             }
1113         }
1114         return false;   // always return false to grant that the software keyboard is hidden anyway
1115     }
1116
1117
1118     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1119
1120         private int fuzz = 10;
1121
1122         /**
1123          * {@inheritDoc}
1124          */
1125         @Override
1126         public boolean onTouch(View view, MotionEvent event) {
1127             if (event.getAction() == MotionEvent.ACTION_DOWN) {
1128                 Drawable rightDrawable = null;
1129                 if (view instanceof TextView) {
1130                     Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1131                     if (drawables.length > 2) {
1132                         rightDrawable = drawables[2];
1133                     }
1134                 }
1135                 if (rightDrawable != null) {
1136                     final int x = (int) event.getX();
1137                     final int y = (int) event.getY();
1138                     final Rect bounds = rightDrawable.getBounds();
1139                     if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1140                         && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1141
1142                         return onDrawableTouch(event);
1143                     }
1144                 }
1145             }
1146             return false;
1147         }
1148
1149         public abstract boolean onDrawableTouch(final MotionEvent event);
1150     }
1151
1152 }